OBSH is one of the commonly used organic foaming agents. It is the most consumed type of sulfonyl hydrazide foaming agents. It is a low-temperature foaming agent commonly used in the plastics and rubber industries. The decomposition temperature is: 150-160 It is 125ml/g, known as "universal foaming agent".
Advantages of OBSH
1. Fine and uniform pore structure2. The decomposition temperature is low, and no addition and decomposition aids are required;
3. Odorless, tasteless, non-polluting, non-decoloring;
4. In the general hardening temperature range, OBSH does not need to use activators, such as urea, acids and glycols.
5. Wide range of adaptability, suitable for natural rubber, synthetic rubber, thermoplastic products and rubber and resin blends;
6. Environmental protection, extremely low toxicity, suitable for packaging materials of contact food;
7. Good electrical insulation performance, has significant advantages in the manufacture of wires and cables,
8. Under certain circumstances, it can act as both a foaming agent and a cross-linking agent in the curing mechanism.
Disadvantages of OBSH
1. Poor dispersion;
2. Strong heat absorption;
3. The cost is high. How to reduce the cost of products is an important research direction in the future.
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