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PRODUCTS

Name:

Rubber vulcanizing agent VA-7

No.:
Affiliate classification:
没有此类产品
到京东
到天猫
Detail

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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