The reason for the change of the properties of nitrile rubber
2022-05-20 10:46:11
The performance of nitrile rubber varies with the polymerization method of acrylonitrile content, and its oil resistance is only second to that of polysulfide, acrylate and fluorine rubber. The vulcanizate without reinforcement and filling has no use value. The higher the content of acrylic cyanide, the better the oil resistance and the worse the low temperature performance; the silicone rubber maintains good elasticity in the range of -60C+250\'C, has good heat aging resistance, and has excellent electrical insulation, which is extremely difficult to manufacture and use. The main elastomer of 180C heat-resistant hose. OMA production line adopts computer/PLC control system to realize setting all operation, product, process and other parameters on the digital display of the computer; any equipment failure will be immediately alarmed, and the cause and solution of the failure will be displayed on the computer display ; The distance is automatically adjusted and continuously adjusted by the computer-controlled synchronous system; Ultra-high-speed operation, each coil is driven by an independent motor, with high voltage regulation accuracy, and large-capacity coils ensure long-term continuous production; Fully electronic synchronous control performs automatic production .
Teflon hose is a high temperature resistant, acid and alkali resistant, highly corrosion resistant food grade hose, PTFE hose, because of its high chemical stability: can withstand all strong acids, including aqua regia, hydrofluoric acid Acid, concentrated hydrochloric acid, nitric acid, fuming sulfuric acid, organic acid, etc., strong base, strong oxidant, reducing agent and various organic solvents. Ideal for high-purity chemical feeds. The tolerance of different media is different. The material of high temperature steam hose is EPDM rubber, EPDM rubber, EPDM EPDM rubber is rubber that has good resistance to water vapor, high temperature steam hose but for oil. , mineral oil, solvent oil is not tolerated, and has a certain resistance to dry hot air, but it is not ideal. Chlorine yellowed polyethylene rubber can be used. It is also possible to use silicone rubber in combination, but it is not easy to bond with the reinforcement layer.
Chemical conveying hoses can be divided into industrial grade (specially conveying industrial water, oil, sewage, powder, chemical raw materials, etc.) and food grade (food factory conveying juice, milk juice, edible water, winery conveying liquor, beer, etc.), wind power, suction and drainage, oil, low-concentration chemicals and other liquid and solid particles, powder materials. Regardless of the application, the substance itself must be a "non-corrosive" "low-concentration chemical" substance. Low-concentration acid and alkali resistance, high elasticity, not easy to age, long service life; high pressure resistance, can keep the original state under high pressure vacuum. Sulfuric acid is extremely corrosive and dense, so chemical transfer hoses need to be designed to handle the unique pressures associated with the products and environments they handle. Critical hose components need to be protected from the corrosive effects of the product, and hose construction must be able to withstand the physical stresses associated with conveying in different environments. Because of its excellent corrosion resistance, PTFE can be used as a material for chemical delivery hoses
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