Products
Liquid Rubber – Carboxyl Terminated Nitrile Butadiene Rubber (CTBN)
Properties and Uses
CTBN is liquid nitrile rubber with carboxyl functional groups at both ends of the molecular chain, and the terminal carboxyl group can react with epoxy resin. It is mainly used for toughening epoxy resin. It can be customized according to customers' requirements.
Technical specifications
|
Item |
CTBN-1 |
CTBN-2 |
CTBN-3 |
CTBN-4 |
CTBN-5 |
|
Acrylonitrile content, % |
8.0-12.0 |
8.0-12.0 |
18.0-22.0 |
18.0-22.0 |
24.0-28.0 |
|
Carboxylic acid value, mmol/g |
0.45-0.55 |
0.55-0.65 |
0.55-0.65 |
0.65-0.75 |
0.6-0.7 |
|
Molecular weight |
3600-4200 |
3000-3600 |
3000-3600 |
2500-3000 |
2300-3300 |
|
Viscosity (27℃), Pa-s |
≤180 |
≤150 |
≤200 |
≤100 |
≤550 |
|
Volatile matter, % |
≤1.0 |
≤1.0 |
≤1.0 |
≤1.0 |
≤1.0 |
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