Mingyi Silicone(Anhui) Co., Ltd.
Common grade fumed rubber for molding has good physical properties, yellowing resistance and good processability. They are applicable to general molded products with requirement for high transparency. Such as: sanitary products and industrial miscellaneous parts such as O-rings and sealing gaskets.
Typical Properties:
|
Category |
Item |
|||||||
|
General molded |
MY D9530 |
MY D9540 |
MY D9550 |
MY D9560 |
MY D9570 |
MY D9580 |
MY D9590 |
|
|
Appearance |
Transparent |
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|
Vulcanization |
Hardness Shore A |
30±2 |
40±2 |
50±2 |
60±2 |
70±2 |
80±2 |
86±2 |
|
Tensile strength MPa≥ |
8.0 |
8.5 |
8.5 |
8.5 |
8.5 |
8.0 |
8.0 |
|
|
Elongation at break %≥ |
600 |
500 |
400 |
400 |
300 |
200 |
120 |
|
|
Breaking set %≤ |
8 |
8 |
8 |
8 |
8 |
8 |
6 |
|
|
Tear strength B KN/m≥ |
15 |
20 |
25 |
25 |
25 |
20 |
10 |
|
|
Post-curing |
Hardness Shore A |
35±2 |
45±2 |
56±2 |
66±2 |
74±2 |
84±2 |
90±2 |
|
Tensile strength MPa≥ |
6.5 |
7.0 |
8.0 |
8.0 |
8.0 |
7.0 |
5.0 |
|
|
Elongation at break %≥ |
500 |
400 |
300 |
300 |
200 |
150 |
80 |
|
|
Tear strength B KN/m≥ |
10 |
16 |
18 |
18 |
18 |
16 |
8 |
|
|
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 |
1.25±0.04 |
1.23±0.05 |
|
|
Compression set 180*22h %≤ |
55 |
50 |
50 |
45 |
45 |
40 |
35 |
|
|
Resilience %≥ |
55 |
55 |
50 |
45 |
40 |
40 |
35 |
|
|
Dielectric strength kV/mm ≥ |
20 |
20 |
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 |
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
- Flexible comprehensive physical properties
- Good yellowing resistance
Applications:
- Applicable to molded products with requirement for high transparency, such as sanitary products, O-rings.
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.
