What is the difference between platinum vulcanizing agent and ordinary vulcanizing agent?
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There are still some differences between platinum vulcanizing agent and ordinary vulcanizing agent. Platinum vulcanizing agent has many advantages, so it is many times more expensive than ordinary vulcanizing agent in price. The vulcanization principle of platinum vulcanizing agent is that in the presence of catalyst Pt, hydrogen-containing silicone oil and vinyl double bond undergo hydrosilylation reaction.
Platinum vulcanizing agent is a two-component addition vulcanizing agent, which has the characteristics of low vulcanization temperature and fast vulcanization speed. Compared with the traditional peroxide vulcanization system, it has the advantages of environmental protection, high efficiency and odorless.
Precautions for vulcanization with platinum vulcanizing agent:
1. Use platinum for vulcanization, and do not use silica gel containing hydrogen-containing silicone oil, otherwise it will be easy to die during rubber mixing and bubbles will be generated during molding;
2. After the platinum A and B glues are evenly mixed with each other, they need to be placed in a space with a temperature not exceeding 25 °C, and used within 8 hours to prevent cross-linking at room temperature;
3. Avoid contact with substances containing nitrogen N, phosphorus P, sulfur S and heavy metals, otherwise it will cause immaturity.
The platinum vulcanizing agent and platinum water of the platinum series are still relatively sharp. Two-component platinum vulcanizing agent is used in the production of various food grades, such as extruded transparent silicone tubes, molded pacifiers, cake pan molds, etc. Production of silicone rubber with lower vulcanization temperatures.