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 Products
Rubber vulcanizing agent VA-7
Chemical Name: Aliphatic polysulfide
Structural Formula: -[-C2H4-O-CH2-O-C2H4-S-S-S-S-]-n
Quality standard:
| Appearance |
Yellow ropy liquid with slight mercaptan odor |
Total sulphur% |
48-52 |
Loss on heat %≤ |
0.1 |
Total chlorine%≤ |
4 |
PH value |
6-8 |
Impurities%≤ |
0.3 |
Relative density |
1.42-1.47 |
Viscosity (26.7℃) |
50~100 pa.s |
Curing agentVA-7-70:
| Appearance |
light yellow or white powder |
Assay |
≥70% |
Loss on heat |
≤2.5% |
Use:
As curing agent of natural rubber, styrene-butadiene rubber, buna-N rubber and other unsaturated rubbers. Easy to disperse in rubber, with higher cross-link efficiency than sulfur, no fog, and better antiaging capacity. Also used in the production of wires and cables, sidewall sizing etc. It offers no corrosion to copper for it contains no free sulfur and can offer good mechanical properties in high temp.. It also can be used in sidewall sizing of tyre.
Packing & Storage:
25KG compound bag; protect against fire, moisture, sunlight, heat and fire.
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