Mingyi Silicone(Anhui) Co., Ltd.
Standard grade fumed rubber for molding has good physical properties, yellowing resistance and good processability. They are applicable to molded products with requirement for high transparency. E.g., keypads, sanitary products and industrial miscellaneous parts such as O-rings and sealing gaskets.
Typical Properties:
|
Category |
Item |
||||
|
Rubber for extrusion |
MY D9250 |
MY D9260 |
MY D9270 |
MY D9280 |
|
|
Appearance |
Transparent |
||||
|
Vulcanization |
Hardness Shore A |
50±2 |
60±2 |
70±2 |
80±2 |
|
Tensile strength MPa≥ |
8.5 |
8.5 |
8.0 |
8.0 |
|
|
Elongation at break %≥ |
500 |
400 |
300 |
200 |
|
|
Breaking set %≤ |
12 |
12 |
12 |
12 |
|
|
Tear strength B KN/m≥ |
25 |
25 |
25 |
20 |
|
|
Post-curing |
Hardness Shore A |
57±2 |
68±2 |
76±2 |
85±2 |
|
Tensile strength MPa≥ |
8.5 |
8.5 |
8.0 |
8.0 |
|
|
Elongation at break %≥ |
450 |
350 |
260 |
200 |
|
|
Tear strength B KN/m≥ |
20 |
20 |
20 |
18 |
|
|
Specific density 25°C g/cm³ |
1.15±0.04 |
1.18±0.04 |
1.22±0.04 |
1.25±0.04 |
|
|
Compression set 180*22h %≤ |
35 |
35 |
35 |
25 |
|
|
Resilience %≥ |
50 |
50 |
45 |
40 |
|
|
Dielectric strength kV/mm ≥ |
20 |
20 |
20 |
20 |
|
|
Volume resistivity Ω.cm≥ |
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 extrusion property and yellowing resistance
Applications:
- Applicable to silicone tubes and E tubes with requirement for high transparence such as milk tube, coffee tube.
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.
