Introduction to the structure of polyester cotton soaked cloth manufacturer

Wire structure: The universal structure of non -vulcanized rubber. Due to the large amount of molecular weight and no external force, the macromolecular chain is random curve. When the external force is used, remove the outside

Foam rubber sponge force, the entanglement of the thread group changes, the molecular chain rebounds, and a strong tendency to recover. This is the origin of the high elasticity of rubber.

Structure of branches: Gathering of the branches of the rubber macromolecular chain to form gel. Gel is not good for the performance and processing of rubber. When plasticizing, various cooperative agents often cannot enter the gel area, forming local gaps, and cannot form reinforcement and cross -linking, becoming a weak part of the product.

Linking structure: Line molecules are connected to each other through the bridge of some atoms or atomic groups to form a three -dimensional mesh structure. With the development of vulcanization, this structure is continuously strengthened. In this way, the free activity capacity of the chain segment decreases, plasticity and elongation decreased, intensity, elasticity and hardness increase, compressing permanent deformation and decreased expansion.

Source and application characteristics of universal rubber

The comprehensive performance of universal rubber is good and widely used.

Mainly include:

① Natural rubber, from the latex of the three-leaf rubber tree, the basic chemical component is a smooth-polyorogenne. Good elasticity, high strength, good comprehensive performance.

② The isoprene rubber, the full name is Shun-1. 4-polytomothene, and a high-oriented rubber made by isoprene. Because its structure and performance are similar to the natural rubber, it is also known as the synthetic natural naturally. rubber.

③ Benzene -orbrene rubber, referred to as SBR, is made from butadiene and styrene. According to the production method, it is divided into emulsion polyte bon p -rubber and solution polymerine phenyl -phenyl phenyl. Its comprehensive performance and chemical stability are good. ④ Dicon rubber, the full name is cub-type -1. 4-polytrandne rubber. Compared with other universal rubber, the cold resistance, abrasion resistance and elasticity of diced rubber after vulcanization, have less fever under dynamic load, have good aging resistance, and are easy to use with natural rubber, club rubber, chores, etc. Essence ⑤ rubber, referred to as CR for short, is made by choridene polymerization. Good

Good comprehensive performance, oil resistance, combustion resistance, oxidation and ozone resistance. However, its density is large, the crystallization is hard to harden at room temperature, the storageability is not good, and the cold resistance is poor.

Source and application characteristics of special rubber

Special rubber refers to rubber with certain special properties. Mainly include:

① Tano rubber, referred to as NBR for short, is made of butadiene and acrylite. Oil resistance and aging resistance can be used for a long time in air at 120 ° C or in oil at 150 ° C for a long time. In addition, it also has water resistance, gas tightness and excellent bonding performance.

② Silicon rubber, the main chain is composed of Silicon oxygen atoms, with organic base groups on silicon atoms. High and low temperature, oxygen resistance, good electrical insulation.

③ fluorine rubber, the molecular structure contains synthetic rubber with fluorine atoms. The number of fluorine atoms containing fluorine -containing units in a cluster is usually expressed that, such as fluoroplastine 23. which is a co -polymer for polarizing diofluoroethylene and trievinyl chloride. Fluorine rubber resistance high temperature, oil resistance, chemical corrosion. ④ Polysulfine rubber, which is made of polysulfide with diexine and alkaline metals or alkaline soil metals. There are excellent oil resistance and solvent resistance, but the strength is not high, the aging resistance is not good, and the processingability is not good. In addition, polyurethane rubber, chlorol rubber, acrylic rubber, etc.