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 |
|||||||
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.