The main way of rubber flame retardant is to slow down the thermal decomposition, blocking the combustion process, the specific flame retardant pathways are as follows: (1) Adding one or more substances to change the thermal decomposition behavior of the rubber, so that the prepared rubber thermal decomposition temperature becomes high, and reduce the decomposition of the flammable gases. (2)
Insoluble sulfur exists in the rubber compound in the form of sand crystal in the rubber mixing process, to avoid the plastic spray frost, and prevent the migration of sulfur, so that the material can maintain a good shape of sticky. Insoluble sulfur instability, in the rubber vulcanization temperature as high as the jkcan be reduced to ordinary sulfur, to
It is understood that rubber release agent is generally divided into external and internal use. The traditional release agent is generally topical, that is coated on the surface of the cavity, and customary also known as the release agent, the main products are talcum powder, mica powder, soap, paraffin, polytetrafluoroethylene and silicone oil, etc. Have a certain stripping effect, but
China’s rubber chemicals industry develop fast in recent years, which is the world’s largest producer and consumer of rubber chemicals. In 2009, the total domestic production of rubber chemicals reached about 600,000 tons, accounting for more than half of the world’s total output. 2009 to 2010 the rise of the domestic rubber additives industry boom, the 2010 rubber chemicals industry,
Xiamen port imports tires are mainly motorized passenger tires, other passenger cars or trucks with tires, accounting for more than 60% of imports. Mainly from China Taiwan, Thailand, Malaysia, Sri Lanka, Britain and other countries and regions. In 2016, Xiamen port imports of motorized passenger tires, other passenger cars or trucks with tires, quantity, amount significantly reduced compared with 2015,
Rubber shock block generally use natural rubber and neoprene, requiring oil-resistant using nitrile rubber, requiring high and low temperature resistant using silicone rubber, requiring high damping using butyl rubber. Rubber shock pad products manufacturing process, in addition to rubber air spring similar to the tire, the majority are similar to model products. Usually made into support or connectors, widely used
Dr. Lien Thikeo, Minister of Agriculture and Forestry of Laos, presided over a meeting last month to discuss the development and business opportunities of Laos rubber industry. According to the participants of the Chinese experts predict: After a comprehensive analysis of rubber farming and operators, rubber trade may be in the next period of time profit growth. The current decline
1.New year ago, the factory production was not normal and orders took more and more, which caused no goods can be delivered. 2.Since January, the price of benzene has continued to rise, aniline-based amine raw materials all the way up, especially the aniline rose nearly 20% which have a direct impact on large varieties of accelerators, supporting the rubber accelerator
First: raw rubber system 1) Rubber and plastic is a very common means, and with high styrene, PVC / NBR alloy effect can also be hardened. 2) Change the type of plastic grades, but also can improve the hardness. Second: vulcanization promotion system 1) By increasing the curing agent to increase the cross-chain density, increase the hardness, such as increased
Rubber vulcanization process can be divided into four curing stages: scorch stage, pre-sulfur phase, sulfur phase, over-sulfur phase. (1) Scorch stage, also known as the curing induction period, at this stage, cross-linking has not yet begun, the compound in the model have good mobility. Rubber vulcanization start speed, directly affect the rubber scorch and operation safety. (2) Pre-sulfur phase, after
