Silicone rubber high yellow vulcanizing agent

The product description

2, 5 - dimethyl - 2, 5 - two (tert butyl peroxide) hexane, in silicone rubber and silicone oil

Molecular weight: 290.4

Pure peroxides reactive oxygen content: 11.02%

specifications

Appearance: transparent gel evenly

Content: 35.0%

storage

Due to the relative instability of organic peroxide, over a period of time will have certain quality loss. As to the quality loss to a minimum, we have for each of the organic peroxides are recommended maximum storage temperature (Ts Max.). When stored in accordance with the recommended conditions, VC - 15 at least can keep within 12 months after delivery within specifications.

Thermal stability

Organic peroxide is unstable thermal material, can occur from accelerating decomposition. Since the accelerating decomposition temperature (SADT) is a kind of material on the packing for transport may produce the accelerate the decomposition of the minimum temperature. SADT determination according to the accumulation of heat storage test. For the VC - 15 SADT: 80 ° C

Breakdown products

Acetone, methane, tertiary amyl alcohol, chloroform, ethane

packaging

Standard packing is 20 liters of plastic buckets 18 kg peroxide products.

Safety and operation

Keep container closed. In a dry, well ventilated place to storage and operation of VC - 15, away from heat source or ignition source, avoid direct sunlight, banned in store to collect.

Avoid contact with reductant (such as amine), acid, alkali and heavy metal compounds (for example: promoter, desiccant and metallic soap).

application

VC - 15 is mainly used in silicone rubber crosslinking, can effectively reduce the secondary vulcanization silicone rubber products and long-term placement of yellowing, and sulfide products smell is very light. VC - about 15 to 1.6% is recommended to use.

• safe processing temperature (20 minutes) rheometer t > : 135 ° C s2

Typical crosslinking temperature (rheometer t90 about 12 minutes) : 175 ° C