Mingyi Silicone(Anhui) Co., Ltd.
Common grade high-strength fumed rubber for molding has high tear strength. They are applicable to molding process and can be used to manufacture silicone rubber products requiring high tear strength.
Typical Properties:
|
Category |
Item |
|||||
|
High-strength rubber |
MY D9730 |
MY D9740 |
MY D9750 |
MY D9760 |
MY D9770 |
|
|
Appearance |
Transparent |
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|
Vulcanization |
Hardness Shore A |
30±2 |
40±2 |
50±2 |
60±2 |
70±2 |
|
Tensile strength MPa≥ |
8.0 |
8.5 |
8.5 |
8.5 |
8.5 |
|
|
Elongation at break %≥ |
600 |
500 |
400 |
400 |
300 |
|
|
Breaking set %≤ |
8 |
8 |
8 |
8 |
8 |
|
|
Tear strength B KN/m≥ |
20 |
30 |
35 |
35 |
35 |
|
|
Post-curing |
Hardness Shore A |
33±2 |
45±2 |
55±2 |
65±2 |
75±2 |
|
Tensile strength MPa≥ |
6.0 |
7.5 |
8.0 |
8.0 |
8.0 |
|
|
Elongation at break %≥ |
540 |
450 |
350 |
300 |
250 |
|
|
Tear strength B KN/m≥ |
10 |
18 |
20 |
20 |
20 |
|
|
Specific density 25°C g/cm³ |
1.07±0.04 |
1.13±0.04 |
1.15±0.04 |
1.18±0.04 |
1.22±0.04 |
|
|
Compression set 180*22h %≤ |
55 |
50 |
50 |
45 |
45 |
|
|
Resilience %≥ |
55 |
50 |
50 |
45 |
40 |
|
|
Dielectric strength kV/mm ≥ |
20 |
20 |
20 |
20 |
20 |
|
|
Volume resistivity Ω.cm≥ |
1.0 x 10¹⁵ |
1.0 x 10¹⁵ |
1.0 x 10¹⁵ |
1.0 x 10¹⁵ |
1.0 x 10¹⁵ |
|
Physical data in the above table is for reference only.
Vulcanization condition: 175℃× 5Min. Post-curing condition: 200℃ x 4h
Addition of curing agent: liquid 2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane: 0.65%.
Advantage:
- Flexible processability
- High tear strength
- Good yellowing resistance
Applications:
- Various molded silicone rubber products requiring high strength
Packing & Storage:
- 20kg/ carton lined with plastic bags or sheets.
- The products have a shelf life of 9 months from date of manufacture depending on the shore hardness if stored at room temperature in the originally sealed container.
