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Good Bonding F-GB series
Description:
Translucent or milky white adhesive fluorosilicone compound has good physical and processing properties, good resilience, fast vulcanization speed and good fluidity, and good adhesion with silicone rubber. It is more suitable for making automotive rubber hose products.
| Item | Test Method |
Performance index |
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|
F-GB60 |
F-GB70 |
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|
Appearance |
Visual inspection |
Translucent or grayish white, smooth surface, no impurities |
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|
Hardness (Shore A) |
ASTM D2240 |
60±5 |
70±5 |
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|
Tensile strength (MPA) die C |
ASTM D412 |
9.0 | 9.0 | ||||
|
Elongation at break (%) die C |
ASTM D412 |
350 | 330 | ||||
|
Tear strength (KN / M) die B |
ASTM D624 |
22 | 23 | ||||
|
Compression set 177 ℃ 22hr (25%) type B |
ASTM D395 |
11 | 11 | ||||
|
Volume change of reference fuel C (%)(23℃×20h) |
ASTM D471 |
17 | 17 | ||||
|
Reference fuel C intensity change (%)(23℃×70hr) |
ASTM D471 |
-20 | -20 | ||||
|
Change in elongation of reference fuel C (23℃×70h) |
ASTM D471 |
-20 |
-20 |
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|
Strength change rate of heat aging performance (225℃×70h) |
ASTM D573 |
-20 |
-20 |
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|
Heat aging resistance elongation change rate (225℃×70h) |
ASTM D573 |
-10 |
-10 |
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|
Adhesion to silica gel kn / M |
|
2.1 |
2.1 |
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Note:
1.The curing agent is 2,5 dimethyl-2,5 Di tert butyl hexane peroxide (DBPH), and the dosage is 0.53gDBPH/100g precompound.
2. Press cure: 170 ℃* 10min, post cure: 200 ℃*4H.
Using method:
Mixing: Firstly mixing several times in open mixer, adding vulcanizing agent, keep mixing until the vulcanizing agent fully mixed inside the material; then reduce the roller distance to 0.5mm-1mm and mixing for 8-10 times.
Vulcanization: After above mixing, the rubber mixture with vulcanizing agent will be made into rubber sheet or cut into the required shape, and then molded and vulcanized on the molding machine.
Storage:
Store in a dry environment at room temperature for one year.
