Mechanical properties comparison of different aluminium hydroxide grades in PVC based formula-Martin 104 and KMT A-1 compare

Mechanical properties comparison of different aluminium hydroxide grades in PVC based formula-Martin 104 and KMT A-1 compare

  • Martin 104 and KMT A-1 compare

By:

Olivia Ren and Frank Chen

KMT INDUSTRIAL HK LIMITED

www.kmtindustrial.com; olivia@kmtindustrial.com

Abstract:

Formulation is: PVC 100%, DOP 45%, Dibasic/Tribasic 3/4, Aluminium Hydroxide 60%, ZB 5%, ATO 5%, Zinc Stearate 2%, EBS 0.5%, Anti-oxygen 0.3%, Test condition 19℃,40%; and we want to compare the mechanical properties of two grades Martin 104 and KMT A-1, finally the result shows the melt flow index of KMT A-1 is 4.8, the elongation at break is 323.7, the tensile Strength is 16.36 MPa, the limit oxygen index is 30.4; the melt flow index of Martin 104 is 6.4, the elongation at break is 310.3, the tensile strength is 17.79 MPa, the limit oxygen index is 30.5.

Key works: Aluminium Hydroxide, PVC.

1. Materials and Testing

  1. 1.1 Materials prepare

PVC, DOP, Anti-Oxygen, ATO, Zinc Stearate, EBS, Anti-oxygen, Aluminium Hydroxide A-1, purity is about 99.8%,whiteness is 99%, particle size (D50) is 1-2μm, from KMT INDUSTRIAL HK LIMITED; Aluminium hydroxide Martin 104, purity is about 99.6%, whiteness is about 94%, the particle size is 1.7-2.1μm,from Huber Engineered Materials.

Banbury, Plate Curing Press; Mould;SY-6210-A Electronic Pulling Force Machine; Oxygen Index Meter.

  1. Preheat the Banbury to 100℃-120℃, the mixing time is 30 minutes, the mixing temperature is 200±10℃.

Put the dough into the mould which is preheated well in advance (the thickness of the mould frame is 1±0.1mm),then use plate curing press tabletting(prepress:10MPA, pressure:10-15mpa, temperature:220℃, preheat for 2Min), after tabletting cooled to 40-50℃ and got the samples.

  1. Composite Standard Test Strips made from dies, the tensile properties tested on electronic tensile machine, the limit oxygen index is tested by oxygen index tester and the melt flow index is tested by the melt flow index tester.
  1. Testing of combustion performance(GB/T 2406.2-2009)

2. Results and Discussion

2.1 Two grade aluminium hydroxide powders

Table1. Fire retardant ingredients used in this study
 KMT A-1Martin 104
Test condition1940%2440%
Particle size (D50)1.8991.871
Purity (%)99.899.6
White (%)9994
Surface coated or notnot coatednot coated

2.2 Test result of Melt Flow Index in PVC formula

Table 2 shows under the formula: PVC 100%, DOP 45%, Dibasic/Tribasic 3/4, Aluminium Hydroxide 60%, ZB 5%, ATO 5%, Zinc Stearate 2%, EBS 0.5%, Anti-oxygen 0.3% in the same composition system: the result shows that the Melt flow index of KMT A-1 is 4.8 and that of Martin 104 is 6.4 .

Table 2. ATH In PVC Formula Test Data
PVC Formula12
PVC100100
DOP4545
Dibasic/Tribasic3/43/4
Martin 10460 
KMT A-1 60
ZB55
ATO55
Zinc Stearate22
EBS0.50.5
Anti-oxygen0.30.3
 
MFI(190℃.5KG)6.44.8

2.3 Test result of Elongation at Break in PVC formula

Table 3 shows under the formula: PVC 100%, DOP 45%, Dibasic/Tribasic 3/4, Aluminium Hydroxide 60%, ZB 5%, ATO 5%, Zinc Stearate 2%, EBS 0.5%, Anti-oxygen 0.3% in the same composition system: the result shows that the elongation at break of KMT A-1 is 323.7% and that of Martin 104 is 310.3%.

Table 3. ATH In PVC Formula Test Data
PVC Formula12
PVC100100
DOP4545
Dibasic/Tribasic3/43/4
Martin 10460 
KMT A-1 60
ZB55
ATO55
Zinc Stearate22
EBS0.50.5
Anti-oxygen0.30.3
 
Elongation at break(%)310.3323.7

2.4 Test result of Tensile Strength in PVC formula

Table 4 shows under the formula: PVC 100%, DOP 45%, Dibasic/Tribasic 3/4, Aluminium Hydroxide 60%, ZB 5%, ATO 5%, Zinc Stearate 2%, EBS 0.5%, Anti-oxygen 0.3% in the same composition system: the result shows that the Tensile strength of KMT A-1 is 16.36 MPa and that of Martin 104 is 17.79 MPa.

Table 4. ATH In PVC Formula Test Data
PVC Formula12
PVC100100
DOP4545
Dibasic/Tribasic3/43/4
Martin 10460 
KMT A-1 60
ZB55
ATO55
Zinc Stearate22
EBS0.50.5
Anti-oxygen0.30.3
 
Tensile Strength(MPa)17.7916.36

2.5 Test result of Limit Oxygen Index in PVC formula

Table 5 PVC 100%, DOP 45%, Dibasic/Tribasic 3/4, Aluminium Hydroxide 60%, ZB 5%, ATO 5%, Zinc Stearate 2%, EBS 0.5%, Anti-oxygen 0.3% in the same composition system: the result shows that the Limit Oxygen index of KMT A-1 is 30.4 and that of Martin 104 is 30.5.

Table 5. ATH In PVC Formula Test Data
PVC Formula12
PVC100100
DOP4545
Dibasic/Tribasic3/43/4
Martin 10460 
KMT A-1 60
ZB55
ATO55
Zinc Stearate22
EBS0.50.5
Anti-oxygen0.30.3
 
LOI(90*10*1)30.530.4

3. Conclusion

ATH In PVC Formula Test Data
PVC Formula12
PVC100100
DOP4545
Dibasic/Tribasic3/43/4
Martin 10460 
KMT A-1 60
ZB55
ATO55
Zinc Stearate22
EBS0.50.5
Anti-oxygen0.30.3
MFI(190℃.5KG)6.44.8
Elongation at break(%)310.3323.7
Tensile Strength(MPa)17.7916.36
Test Condition19℃,40%24℃,35%
Particle size(D50)1.8891.871
LOI(90*10*1)30.530.4

Through this test data sheet, we can see that for the melt flow index, PVC formula with Martin 104 is 1.6 higher than the A-1; for the elongation at break, PVC formula with A-1 is 13.4% higher than Martin 104; for the tensile strength, PVC formula with Martin 104 is a little higher than A-1; for limit oxygen index, A-1 and Martin 104 are almost the same.

Company Profiles…

KMT INDUSTRIAL HK LIMITED, headquartered in Gansu, China, research and manufacturer magnesium hydroxide, natural brucite powder.

www.kmtindustrial.com

Contact: olivia@kmtindustrial.com

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