Mingyi Silicone(Anhui) Co., Ltd.
Causes: Impurity of white carbon black, which contains high temperature reaction or ultraviolet discoloring substances, causing yellowing; small molecules left over from high temperature decomposition......
2019-12-06The demoldability during the rubber vulcanization process is a key indicator for directly judging whether the mixed silica gel can be applied. The mucous membrane and thermal death difference are not ......
2019-12-06The main reason: the white carbon black on the market is more than ten yuan per kilogram of mixed rubber filled with precipitation method white carbon black, the pH itself is alkaline and contains fre......
2019-12-06(1) The design of the rubber should be appropriate and reasonable. For example, the accelerator should be used in multiple ways as much as possible. Suppress scorch. In order to adapt to high-temperat......
2019-12-05Anti-scorch agents are mainly organic acids, nitroso compounds and thioimide compounds. 1. It has excellent anti-scorch performance, has little selectivity to different accelerators and rubber type......
2019-12-05(1) Improper formulation design, imbalanced configuration of vulcanization system, excessive amount of vulcanizing agent and accelerator. (2) For some types of rubber that require plasticization, t......
2019-12-05Rubber over vulcanization: refers to the state of the rubber material under high temperature and long time. Dead rubber: Due to improper operation, the early vulcanizati......
2019-12-05① The vinyl content in the rubber is not enough or the vinyl content of the raw rubber is not uniformly distributed, so that the rubber does not reach the normal sulfur point during vulcanization, the......
2019-12-05According to the curing conditions, it can be divided into three types: cold curing, room temperature curing and hot curing. Cold vulcanization can be used for the vulcanization of thin film produc......
2019-12-04It can be divided into four stages, each with its own characteristics. It can be seen from the measurement of the fixed tensile strength of the rubber (or the vulcanizer) that the entire vulcanization......
2019-12-04Vulcanization accelerator is a kind of auxiliary agent that can accelerate the vulcanization reaction speed, shorten the vulcanization time, lower the vulcanization temperature, reduce the amount of v......
2019-12-04Dimethyl silicone rubber does not contain vinyl in its molecule and is a saturated rubber. Generally, highly reactive peroxides are used as vulcanizing agents. The peroxide radicals take hydrogen from......
2019-12-04① Dosage of curing agent. The larger the amount, the faster the vulcanization speed, and the higher the degree of vulcanization that can be achieved. The solubility of vulcanizing agents in silicone r......
2019-12-04Mixing is the process of mixing raw rubber or plastic raw rubber with compounding agents into a compound rubber with a rubber mixer. It is the most important production process for rubber processing. ......
2019-12-03Some rubber manufacturers at home and abroad have the following experience values for reference: 1) The vulcanization method of molding and transfer injection molding, the vulcanization pressure in t......
2019-12-03
