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we common authentic silicone products on the market commonly used a few years will not yellow, reproduction process, however, when there are some newly forming silica gel products looks change the phenomenon of yellow or pale, is this why? First of all we produced in the process has the following kinds of silica gel.
after the molding process result in transparent silicone products color yellow problems are mainly has the following led to
mold temperature is too high or curing time is too long, the second after add sulfur vulcanizing agent and raw materials, the performance of the vulcanizing agent is not stable, because the vulcanizing agent have normal, resistance to yellow type vulcanizing agent have called crystal, ordinary curing agent used in some dark or non exposed silicone products for color request is not high, resistance to yellow vulcanizing agent used in the need to be exposed, shallow color is bright, and a need to color, sometimes we added resistance to yellow in the rubber vulcanizing agent, but produced products is yellow, the raw materials that might be the silicone products factory is poor, so be sure to use high quality raw materials. Intermediate inspection is the key to find and solve the major quality problems. Therefore, maintain the normal operation of the machine, mold good working state, strengthen the operation of the operator and qc personnel skills and quality consciousness training is the key to reduce production bad, is also the enterprise benefit.
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