KMT Industrial flame retardant magnesium hydroxide (MDH) powder for halogen-free cable and wire applications

Table of Contents

  1. Introduction to MDH in the Cable Industry
  2. What Is Magnesium Hydroxide and Why Is It Used?
  3. Types and Grades of MDH
  4. How MDH Works as a Flame Retardant
  5. MDH Applications in Cable and Wire
  6. Why Choose KMT Industrial's MDH
  7. How to Choose MDH for Cable Manufacturing
  8. Global Trends in Cable Flame Retardants
  9. MDH Advantages Compared with Other Flame Retardants
  10. Conclusion and Recommendations
  11. Related Articles
  12. Frequently Asked Questions

1. Introduction to Flame Retardant Magnesium Hydroxide in the Cable and Wire Industry

Are you looking for a halogen-free flame retardant for cable insulation and jacketing? Do you need to balance fire performance, smoke reduction, mechanical properties, and extrusion efficiency? Choosing the right flame retardant magnesium hydroxide (MDH) grade can help cable manufacturers develop compounds that meet application-specific fire safety and environmental requirements.

If the answer is yes, then understanding MDH's thermal properties, particle size, surface treatment, and compatibility with different polymers is an important first step. Magnesium hydroxide is an inorganic flame retardant used in halogen-free flame-retardant (HFFR) and low-smoke, zero-halogen (LSZH) cable compounds. It absorbs heat during decomposition and releases water vapor, helping to slow combustion and reduce smoke generation under appropriate formulation and test conditions.

As manufacturers develop safer cable systems for buildings, transportation, industrial facilities, and data centers, halogen-free formulations have become an important material-selection option. Magnesium hydroxide can be used in suitable polymer systems to help reduce fire risks while supporting low-smoke cable designs.

KMT Industrial supplies magnesium hydroxide products for industrial applications, including hexagonal, ultrafine, and precipitated grades. This guide explains how to select an appropriate MDH grade, understand its performance characteristics, and evaluate its suitability for cable and wire manufacturing.

Key Industry Considerations

  • Halogen-free formulations can help reduce reliance on halogen-containing flame retardants.
  • MDH has a higher decomposition temperature than aluminum trihydrate (ATH), making it suitable for selected higher-temperature processing applications.
  • Particle size and surface treatment affect dispersion, melt flow, processing torque, and final compound properties.
  • Fire performance depends on the complete formulation, cable construction, processing conditions, and applicable test standard.

2. What Is Magnesium Hydroxide (MDH) and Why Is It Used?

Magnesium hydroxide (Mg(OH)₂) is an inorganic compound widely used as a halogen-free flame retardant and smoke-suppressing additive. When exposed to sufficient heat, it decomposes endothermically, absorbing energy and releasing water vapor. The resulting cooling effect, dilution of combustible gases, and formation of a magnesium oxide residue can help slow combustion in properly designed polymer formulations.

Compared with halogen-containing flame retardants, MDH does not introduce bromine or chlorine as part of its chemical structure. Its use can therefore support halogen-free material designs. However, the overall smoke toxicity and environmental performance of a finished cable depend on all its ingredients and combustion conditions, not MDH alone.

KMT Industrial offers several magnesium hydroxide product families for industrial formulation development, including hexagonal magnesium hydroxide (HP7 and HP7N), ultrafine magnesium hydroxide (P1, P1S, and P1SA), and precipitated magnesium hydroxide (PM5S, PM5SN, and PM3SN). Actual purity, particle-size distribution, coating, and suitability should be confirmed using the relevant product technical data sheet.

Magnesium hydroxide MDH powder for halogen-free flame retardant cable insulation and HFFR compounds

2.1 Key Chemical and Physical Properties of MDH

Understanding the fundamental properties of magnesium hydroxide helps engineers evaluate its suitability for cable compound design. The following figures are representative reference values; product-specific results may vary by grade, test method, and supplier specification.

Property Typical Reference Value Significance for Cable Applications
Chemical Formula Mg(OH)₂ Inorganic flame-retardant additive
Molecular Weight 58.32 g/mol Useful for chemical and formulation calculations
Decomposition Temperature Approximately 330–340°C Higher thermal stability than ATH for selected processing systems
Endothermic Decomposition Heat is absorbed during decomposition Helps cool the material exposed to heat
Theoretical Water Content Approximately 30.9% by mass Water vapor contributes to cooling and gas dilution
Mohs Hardness Approximately 2.5–3 Relevant to filler handling and equipment wear assessment
pH of Aqueous Suspension Typically alkaline; verify by grade and test method Relevant to formulation compatibility and quality control

For purchasing and production approval, request the current technical data sheet (TDS), safety data sheet (SDS), and lot-specific certificate of analysis (COA). These documents provide a more reliable basis for comparing products than general reference values alone.

3. Types and Grades of Magnesium Hydroxide Used in Flame Retardancy

Flame-retardant magnesium hydroxide is available in different grades according to production method, particle size, crystal morphology, and surface treatment. These characteristics influence dispersion, processing torque, melt flow, mechanical properties, and the amount of additive required to achieve a target fire classification.

3.1 By Production Method

Synthetic magnesium hydroxide: Produced through controlled chemical reactions or precipitation. Depending on the manufacturing process, synthetic grades can offer controlled particle size, high purity, and consistent properties. KMT Industrial's hexagonal MDH and precipitated MDH ranges can be evaluated for EVA, PE, POE, and other compatible polymer compounds.

Hydrothermal-treated magnesium hydroxide: Hydrothermal processing can be used to influence crystal morphology and particle characteristics. The resulting dispersion and processing behavior depend on the specific product and formulation.

Natural brucite-derived magnesium hydroxide: Obtained from naturally occurring brucite ore and processed into powder. Depending on purity, particle size, and impurity levels, selected grades may be suitable for applications where cost and required compound properties are carefully balanced.

KMT Industrial supplies multiple magnesium hydroxide product families. Buyers should confirm the production route, available grades, manufacturing capacity, and quality specifications directly with the supplier.

3.2 By Surface Treatment

Surface treatment can improve filler dispersion and compatibility with polymer matrices. Its effectiveness depends on the coating chemistry, base MDH properties, polymer type, and compounding conditions.

Uncoated grades: Products such as selected P1, PM, and HP grades may be considered for formulations in which the base filler properties and processing system provide sufficient dispersion.

Stearic-acid-treated grades: Hydrophobic treatment can improve powder flow and compatibility with selected nonpolar polymers. The suitability of P1SA or other treated products should be verified for the intended formulation.

Silane-treated grades: Silane treatment may improve interfacial bonding and filler dispersion in compatible systems. Grades such as P1S and PM5S can be evaluated when mechanical properties and polymer-filler interaction are important.

Specialty surface-treated grades: KMT Industrial lists grades including HP7N, PM5SN, and PM3SN. Request product-specific data to confirm the treatment method, recommended polymers, and measurable processing benefits.

3.3 By Particle Size

Particle size affects surface area, dispersion, viscosity, mechanical performance, and filtration requirements. Fine particles may improve certain formulation properties, but their effect on processing and fire performance must be verified through compound testing.

  • Ultrafine grades: The P1 family is listed for applications requiring fine particles. Confirm the actual D50 and particle-size distribution in the product specification.
  • Hexagonal grades: HP7 and HP7N can be evaluated for EVA- and XLPE-based HFFR compounds where morphology and dispersion are important.
  • Fine precipitated grades: PM5-series products may be considered for selected cable jackets and halogen-free formulations.
  • Medium-particle grades: PM3-series products may be evaluated when a balance of processing, performance, and material cost is required.
  • Coarser grades: These may suit selected specialty applications, but their suitability for thin cable insulation or jacketing should be confirmed through dispersion and surface-quality testing.

Refer to KMT Industrial's wire and cable application guide for product options and application information. Final grade selection should be based on current product specifications and formulation trials.

Magnesium hydroxide grades for flame-retardant cable compounds including hexagonal, precipitated, and ultrafine MDH

3.4 KMT Industrial MDH Product Grades Comparison

The following table summarizes the grade information in the supplied product draft. Treat the figures as preliminary selection references and verify them against the latest technical data sheets before procurement.

Grade Reported D50 (μm) Surface Treatment Reported Purity Potential Application
HP7 1.2–1.6 Uncoated, as listed ≥97% EVA/XLPE HFFR compounds
HP7N 1.2–1.6 Specialty treatment; verify details ≥97% HFFR formulations requiring optimized processing
P1 0.8–1.2 Uncoated, as listed ≥95% Fine-particle formulations
P1S 0.8–1.2 Silane, as listed ≥95% Selected LSZH and engineering-plastic formulations
PM5SN 1.4–1.7 Specialty treatment; verify details ≥99% Selected power-cable and HFFR jacket formulations
PM3SN 2.5–3.2 Specialty treatment; verify details ≥98% Selected cost-optimized formulations

Important: D50 is a median particle-size measurement, not a complete description of particle-size distribution. Purity, coating, moisture, and other specifications should be evaluated together when comparing grades.

4. How Does Magnesium Hydroxide Act as a Flame Retardant?

Magnesium hydroxide contributes to flame retardancy mainly through endothermic decomposition, water-vapor release, and the formation of a magnesium oxide residue. These mechanisms can help reduce heat transfer and slow combustion. The degree of smoke suppression and protective residue formation depends on the polymer matrix, filler loading, other additives, and fire-test conditions.

MDH is used in selected EVA, PE, POE, XLPE, and other compatible polymer compounds. PVC formulations require particular care because PVC already contains chlorine and has its own thermal-degradation behavior. A formulation containing MDH is not automatically halogen-free or compliant with a particular fire standard; the full compound and finished cable must be tested against the applicable requirements.

4.1 Endothermic Decomposition

Heat Absorption and Water Release

When heated sufficiently, magnesium hydroxide decomposes according to the following reaction:

Mg(OH)₂ + Heat → MgO + H₂O ↑

The reaction absorbs heat from the surrounding material. The released water vapor can dilute combustible gases near the flame, while the magnesium oxide residue remains in the heated region. The exact decomposition temperature depends on the material and test conditions.

4.2 Formation of a Protective Residue

Physical Barrier Effects

The magnesium oxide residue and remaining solid material can contribute to a barrier that slows heat and mass transfer. Depending on the polymer and formulation, the residue may help:

  • Reduce heat transfer to underlying polymer.
  • Limit the release of volatile decomposition products.
  • Support the integrity of the remaining solid layer during burning.

4.3 Smoke and Fire-Gas Considerations

Smoke Suppression and Test Verification

MDH can help reduce smoke generation in suitable formulations, but the result is not a fixed percentage for every cable compound. Smoke density, corrosivity, and gas toxicity depend on the complete material composition and burning conditions.

  • Evaluate smoke density using the applicable test method, such as IEC 61034 where relevant.
  • Assess flame propagation using the required cable test, such as the applicable IEC 60332 method.
  • Verify halogen-acid gas requirements separately when specified by the product standard.

UL 94 V-0 is a classification for specified plastic-material burning tests, not a universal cable-compliance certificate. Cable manufacturers should use the standards required for their end market and product category.

5. Applications of Flame Retardant Magnesium Hydroxide in the Cable and Wire Industry

Magnesium hydroxide is used in various flame-retardant polymer compounds for cable insulation, sheathing, and related electrical components. Suitable applications depend on the base polymer, operating temperature, required fire classification, mechanical properties, and processing conditions.

  • Power cables and HFFR compounds: Selected HP7, HP7N, PM5SN, and PM3SN grades may be evaluated for EVA-, PE-, and POE-based cable jackets. The finished cable must be tested against the specified flame-propagation requirements.
  • Communication and data cables: MDH-containing LSZH compounds can be considered for cable sheathing in buildings and data infrastructure when smoke, halogen-acid gas, and mechanical requirements are met.
  • Automotive cables: Grade selection should account for thermal aging, flexibility, electrical performance, and the applicable automotive specifications. MDH and ATH blends may be considered where compatible with the formulation.
  • Industrial cables and components: MDH can be evaluated in selected PVC-containing or other polymer systems, as well as compatible engineering plastics used for connectors and housings. Performance depends on the complete formulation.

KMT Industrial's wire and cable application information can help buyers identify product options for further evaluation. Request the current technical documentation before selecting a grade for production.

Power and communication cables illustrating potential applications of magnesium hydroxide flame retardant in cable compounds

5.1 Application Evaluation Examples

Example 1: HFFR Power Cable Compound

Challenge: A manufacturer needs a low-smoke, halogen-free cable jacket that meets its required flame test while retaining acceptable flexibility and tensile properties.

Evaluation approach: Compare suitable MDH grades, such as HP7N or another technically compatible grade, at several loading levels in the selected polymer matrix. Review dispersion, extrusion torque, melt flow, mechanical properties, and fire-test results.

Acceptance criteria: Approve the formulation only after the required flame, smoke, mechanical, and processing tests have been completed. Results should be documented using the actual compound and test conditions.

Example 2: Automotive Wire Formulation

Challenge: An automotive supplier needs a flame-retardant polymer compound that maintains its mechanical and electrical performance after thermal aging.

Evaluation approach: Screen compatible MDH grades and, where appropriate, MDH/ATH blends. Assess extrusion stability, tensile strength, elongation, thermal aging, and the specific automotive fire-test requirements.

Acceptance criteria: Confirm compliance with the applicable vehicle-manufacturer specification and relevant test methods before production release. Cost savings and thermal performance must be demonstrated through comparative testing.

Note: These are illustrative formulation-evaluation examples, not independently verified customer case studies or guaranteed performance results.

6. Why KMT Industrial's Magnesium Hydroxide Is Worth Evaluating

KMT Industrial supplies magnesium hydroxide for industrial applications, including specialty grades for polymer formulation. When evaluating KMT products for cable and wire manufacturing, buyers should consider product consistency, technical documentation, grade availability, application support, and supply arrangements.

  • Product range: Hexagonal, ultrafine, and precipitated MDH options provide different starting points for formulation screening. Select a grade according to the required particle size, surface treatment, purity, and polymer compatibility.
  • Quality documentation: Request the current TDS, SDS, and COA. Confirm relevant quality-management certificates and the scope of any environmental or regulatory documentation before procurement.
  • Halogen-free formulation support: MDH can be used in halogen-free compound designs. Confirm the composition and compliance of the complete formulation rather than assuming the finished cable is compliant because it contains MDH.
  • Technical consultation: Discuss loading level, filler dispersion, compounding torque, extrusion behavior, and mechanical-property targets with the supplier's technical team.
  • Supply planning: Confirm production lead times, available inventory, packaging, export arrangements, and shipment schedules for the destination market.

Before placing a production order, buyers should confirm the exact product grade, commercial specification, minimum order quantity, delivery terms, and any support available for laboratory trials.

Supplier Qualification Checklist

  • Current technical data sheet and safety data sheet.
  • Batch-specific certificate of analysis and agreed acceptance limits.
  • Verified particle size, purity, moisture, and surface-treatment specifications.
  • Relevant management-system certificates and regulatory declarations.
  • Sample availability, technical support, and repeat-order supply arrangements.

To discuss suitable grades and request current product information, visit KMT Industrial's contact page.

7. How to Choose the Right Magnesium Hydroxide for Cable Manufacturing

Selecting the right MDH grade requires balancing polymer compatibility, fire-test requirements, processing conditions, mechanical performance, and total formulation cost. The following steps provide a practical framework for comparing available products.

7.1 Identify the Polymer and Cable Application

Polymer compatibility: Start with the actual polymer matrix and cable construction. EVA, PE, POE, XLPE, PP, PVC, and engineering plastics have different processing windows and mechanical requirements. A grade that works well in one polymer should not automatically be assumed to perform equally well in another.

Fire-test requirements: Identify the applicable cable standard and the required flame, smoke, and halogen-acid gas performance. UL 94, IEC 60332, IEC 61034, and other standards measure different properties; passing one test does not establish compliance with all the others.

Processing conditions: Confirm the actual melt temperature, residence time, screw configuration, filler-feeding method, and moisture-control requirements. MDH's thermal stability may be beneficial in higher-temperature systems, but the complete formulation must remain stable during processing.

Cost and productivity: Compare the cost per unit of finished compound, not only the price per kilogram of MDH. Include loading level, extrusion throughput, energy consumption, scrap rate, and any changes in mechanical performance.

7.2 Grade Selection Quick Reference

The table below provides preliminary screening directions. Loading ranges are formulation-dependent examples, not universal recommendations or guaranteed results. Final selections require laboratory and finished-cable testing.

Application Example Polymer Grades to Evaluate Preliminary Loading Range Key Evaluation Factors
Power cable jacket EVA/PE/XLPE-based compounds HP7/HP7N Screen around 50–65 wt% Flexibility, elongation, extrusion stability, fire performance
Data and communication cable PE/POE-based compounds PM5SN/HP7N Screen around 50–65 wt% Smoke, gas requirements, surface quality, mechanical properties
Automotive wire PP or other specified polymer P1S or compatible grade Determine through trials Thermal aging, flexibility, electrical and flame performance
Industrial cable PVC or other specified polymer PM3-series or compatible grade Determine through trials Thermal stability, compound compatibility, smoke and flame tests
Connector housing PA66/ABS or other compatible resin PM5S or compatible grade Determine through trials Impact strength, tensile properties, flow, and required plastic-material fire classification

Loading levels must be expressed consistently. The ranges above refer to approximate weight percentages of the total compound for initial screening, not percentages based on the polymer alone. The actual formulation basis must be clearly defined when comparing laboratory results.

7.3 Test Before Scaling Up

Run a controlled comparison using the candidate MDH grade and a documented reference formulation. Measure dispersion, melt flow, compounding torque, tensile strength, elongation at break, aging performance, and the required flame and smoke properties. Confirm the results on the finished cable wherever the applicable specification requires cable-level testing.

For grade recommendations, formulation support, or product documentation, contact KMT Industrial with your polymer type, target standard, operating conditions, and current formulation details.

8. Global Trends in Flame Retardant Materials for Cable and Wire Production

The cable and wire industry continues to evaluate halogen-free materials, smoke performance, regulatory compliance, and supply-chain resilience. Magnesium hydroxide is one of several additives used in this transition, particularly in formulations where thermal stability and low-smoke performance are important.

  • Halogen-free material development: Manufacturers are evaluating alternatives to certain halogen-containing flame retardants according to product requirements and applicable restrictions.
  • LSZH and HFFR cable demand: Building infrastructure, transportation, and data-center projects can require cables with defined smoke and halogen-acid gas characteristics.
  • Formulation optimization: MDH particle size, surface treatment, and blends with ATH or other compatible additives can be evaluated to balance fire performance, processing, and cost.
  • Supply-chain resilience: Buyers increasingly assess supplier consistency, inventory planning, lead times, and documentation alongside the price of the raw material.
  • Product-specific compliance: Manufacturers must distinguish between the regulatory status of an individual additive and the compliance of the finished cable or compound.

8.1 Market Outlook and Regulatory Considerations

Market Factors to Monitor

  • Investment in power grids, renewable energy, transportation, and data-center infrastructure.
  • Demand for cables that meet specified flame propagation, smoke density, and halogen-acid gas requirements.
  • Raw-material prices, processing costs, and the total cost of finished compound production.
  • Regional manufacturing capacity, logistics, and availability of qualified alternative suppliers.

Regulatory and Standards Checklist

  • EU REACH: Verify the applicable registration, restriction, and communication obligations for the specific substance and supply chain.
  • RoHS: Check the requirements applicable to the electrical or electronic product. RoHS compliance is not a blanket certification of every cable formulation.
  • IEC 60332: Identify the relevant flame-propagation test for the cable type and installation requirements.
  • IEC 61034: Review smoke-density requirements where applicable.
  • Automotive standards: Confirm the specific vehicle-manufacturer requirements and test methods for the intended application.

Market forecasts and regulatory requirements can change. Before using numerical market projections in purchasing decisions or public marketing materials, confirm the original research source, publication date, geographic scope, and definition of the market being measured.

9. Advantages of Using Magnesium Hydroxide Compared with Other Flame Retardants

Magnesium hydroxide, aluminum trihydrate (ATH), brominated flame retardants, and antimony trioxide (ATO) have different functions and performance profiles. Their suitability depends on the polymer system, regulatory requirements, required fire classification, mechanical properties, and total formulation cost.

  • Halogen-free formulation option: MDH contains no bromine or chlorine in its chemical formula and can be used in halogen-free formulations.
  • Higher thermal stability than ATH: MDH typically decomposes at a higher temperature than ATH, which can be useful in selected higher-temperature compounding processes.
  • Heat absorption and water release: Its endothermic decomposition helps cool the material and releases water vapor.
  • Potential smoke-performance benefits: MDH can contribute to reduced smoke generation in suitable compounds, although performance must be verified experimentally.
  • Formulation flexibility: MDH may be used alone or in combination with compatible additives to balance flame performance, mechanical properties, and cost.

Magnesium hydroxide flame retardant advantages including halogen-free formulation, heat absorption, and thermal stability

9.1 Flame Retardant Comparison Table

Property MDH ATH Brominated Flame Retardants ATO
Thermal Behavior Typically decomposes around 330–340°C Typically decomposes around 180–220°C Depends on the specific chemical Not primarily an endothermic water-releasing filler
Halogen-Free Yes, as a substance Yes, as a substance No, for brominated substances Yes, as a substance
Primary Role Endothermic flame retardant and smoke-reducing additive Endothermic flame retardant and filler Flame inhibition in compatible formulations Synergist for selected flame-retardant systems
Smoke Performance Can be favorable in suitable formulations; test required Can contribute to smoke reduction; test required Varies by chemical and formulation Depends on the complete system
Typical Formulation Consideration High filler loading may affect flexibility and processability Useful at suitable processing temperatures Check substance-specific restrictions and fire performance Check exposure, regulatory, and application requirements
Regulatory Assessment Verify the complete formulation and applicable requirements Verify the complete formulation and applicable requirements Restrictions vary by substance and jurisdiction Verify substance-specific obligations and market requirements
Relative Cost Depends on grade and loading Depends on grade and loading Varies substantially Varies by market and formulation
Key Takeaway: MDH is a useful option when a formulation requires a halogen-free inorganic flame retardant with higher thermal stability than ATH. The best solution depends on actual fire-test performance, processing behavior, mechanical properties, regulatory requirements, and total cost.

10. Conclusion and Recommendations

Flame-retardant magnesium hydroxide is an important additive for manufacturers developing halogen-free cable and wire compounds. Its endothermic decomposition, water-vapor release, and higher thermal stability than ATH make it suitable for evaluating in selected HFFR and LSZH formulations.

The most appropriate grade depends on the polymer matrix, required fire and smoke performance, particle size, surface treatment, processing conditions, and budget. Hexagonal MDH grades, ultrafine magnesium hydroxide, and precipitated MDH offer different starting points for formulation development. Always verify grade specifications and test the finished compound against the required standards.

KMT Industrial provides magnesium hydroxide product options for industrial applications. Contact the company to request current product data, discuss grade compatibility, and evaluate samples for your cable manufacturing process.

Ready to Optimize Your Cable Compound?

Contact KMT Industrial to discuss your magnesium hydroxide requirements.

  • Product grade and technical data inquiries
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11. Related Articles

12. Frequently Asked Questions (FAQs)

12.1 What Is the Best Type of Magnesium Hydroxide for Cable Manufacturing?

The best grade depends on the polymer, required fire performance, processing conditions, and mechanical targets. HP7 or HP7N may be candidates for selected EVA- or XLPE-based HFFR compounds, while P1-series and PM-series grades may be evaluated for other formulations. Confirm each grade's specifications and suitability with the supplier before production.

12.2 Is Magnesium Hydroxide an Environmentally Friendly Flame Retardant?

Magnesium hydroxide is an inorganic, halogen-free substance that can support the development of halogen-free flame-retardant compounds. Its overall environmental and safety profile must still be evaluated in the context of the full formulation, manufacturing process, product life cycle, and applicable regulations.

12.3 Can Magnesium Hydroxide Help a Compound Achieve UL 94 V-0?

MDH can contribute to flame retardancy, but UL 94 V-0 cannot be guaranteed by the additive alone. The result depends on the polymer, additive loading, specimen thickness, other ingredients, and test conditions. In addition, UL 94 is not a substitute for the cable-specific flame tests required for many wire and cable applications.

12.4 What Is the Difference Between Magnesium Hydroxide and Aluminum Hydroxide?

Both MDH and ATH are inorganic, halogen-free flame retardants that absorb heat and release water during decomposition. MDH typically decomposes at a higher temperature than ATH, making it a candidate for certain higher-temperature processing systems. The better choice depends on formulation requirements, cost, processing stability, and test results.

12.5 What Loading Percentage of MDH Is Used in HFFR Cable Compounds?

Loading varies by polymer, target flame classification, mechanical-property requirements, and the other ingredients in the formulation. High-filler HFFR systems may use approximately 50–65 wt% MDH as an initial screening range, but this is not a universal specification. Confirm the formulation basis and optimize the loading through laboratory and cable-level testing.

12.6 Can MDH and ATH Be Used Together?

Yes. MDH and ATH can be combined in some formulations to balance processing temperature, flame performance, mechanical properties, and material cost. The appropriate ratio depends on the polymer and the required test results. Any claimed cost saving or synergistic effect should be demonstrated through comparative testing.

12.7 How Does Surface Treatment Affect MDH Performance?

Surface treatment can influence powder flow, dispersion, polymer-filler interaction, melt flow, and processing torque. The results depend on the coating chemistry, base MDH grade, and polymer system. Compare treated and untreated grades under the same compounding conditions before selecting a product for production.

12.8 What Documents Should Buyers Request from an MDH Supplier?

Request a current technical data sheet, safety data sheet, and batch-specific certificate of analysis. Depending on the application and destination market, buyers may also need relevant quality certificates, regulatory declarations, traceability information, and written confirmation of product specifications.

12.9 Does Using MDH Automatically Make a Cable Halogen-Free and Low-Smoke?

No. MDH itself is halogen-free, but the other ingredients in the compound may contain halogens or generate smoke during combustion. The finished cable must be evaluated against the relevant halogen-acid gas, smoke-density, and flame-propagation requirements before it can be described as compliant.

Need Technical Support?

Contact KMT Industrial to discuss MDH grades, technical specifications, and your cable compound requirements.

Email: info@kmtindustrial.com | Website: www.kmtindustrial.com