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11
2023
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05
Notes for the use of silicone platinum vulcanizing agent
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In the vulcanization molding process of silica gel, there are many vulcanizing agents can be used, the common is no more than double 24 vulcanization agent, double 25 vulcanization agent and we will talk about platinum vulcanization agent today, today mainly to tell you about the use of silicone platinum vulcanization agent precautions, convenient for us in the future application, safe, reasonable and efficient use of it, take a look.
In the vulcanization molding process of silica gel, there are many vulcanizing agents can be used, the common is no more than double 24 vulcanization agent, double 25 vulcanization agent and we will talk about platinum vulcanization agent today, today mainly to tell you about the use of silicone platinum vulcanization agent precautions, convenient for us in the future application, safe, reasonable and efficient use of it, take a look.
As we know, platinum curing agent because of its excellent environmental performance, often used in medical, food, children and other health performance requirements, or low curing temperature product field, with low curing temperature, curing speed and other characteristics, compared with the traditional peroxide curing system has the advantages of environmental protection, high efficiency and tasteless. Of course, such excellent performance, its price is a little more expensive.
1, hot air vulcanization should pay attention to the choice of rubber material, otherwise it will produce bubbles;
2, the use of platinum sulfur, raw materials can not be added to contain N. P. S atoms or heavy metal components (example: hydrogen sulfide, mercaptan) it will make the product surface produce a large number of needle empty phenomenon, and will lead to product vulcanization is not complete and produce sticky mold;
3, the temperature in the process of mixing can not be too high, the best is not more than 40℃, it is recommended to open the mill with ice water circulation cooling. The best effect;
4, add good platinum A, B agent, need to be placed in the temperature does not exceed 25 degrees Celsius space, and need to be used within 4 hours to 8 hours, to prevent room temperature crosslinking.
5, mixing and open mixer roller temperature is higher than 45 degrees can not add this product, to be cooled before, otherwise the rubber will die;
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