Introduction To The Knowledge Of Reprocessing After Vulcanization Of Silicone Rubber

- Apr 09, 2021-

In the process of thermal vulcanization of silica gel, it is necessary to select the appropriate processing temperature and vulcanization time according to different types of vulcanizing agents; the typical catalysts used for vulcanization of silicone rubber include two five, two two four (peroxide) and platinum vulcanizing agents. At 170℃, it is suitable for solid silica gel to be formed under the catalysis of double two five vulcanizing agent. Among them are pure silica gel, silica gel and CL-24 coated PRIMER primer glue, metal, tempered glass, nylon, ceramics, bakelite and other molded products. It should be noted that the secondary vulcanization time is recommended not to exceed 200°C and the duration is within 2 hours. Typical silicone kitchenware (silicone spoon, spatula, salad bowl, whisk, butter spatula, etc.), cable accessories (insulators, lightning arresters), miscellaneous pieces



A solid rubber compound with double two-four vulcanization at a low temperature of 120°C or a liquid silicone rubber with a platinum vulcanizing agent. It is made of metal, PC/PBT/PA nylon plastic material that has been brushed with CL-26AB glue. The former requires a secondary vulcanization process, and it is recommended that the temperature be lower than 180°C within 2 hours. Among them, baby silicone milk bottles, medical catheters, balloons, mobile phone cases, diving glasses, smart phone waterproof parts (SIM card tray, type-c, USB interface, FPCB circuit board waterproof, microphone, earpiece, speaker, battery cover Waterproof, etc.)