1、 Types of rubber raw materials
1. Raw rubber
Latex, raw rubber, natural rubber, synthetic rubber, special rubber, Br (polybutadiene rubber), NBR (nitrile rubber), butyl rubber, fluororubber, SBS rubber, SBR (styrene butadiene rubber), EPDM (ethylene propylene rubber), Cr (chloroprene rubber), chlorinated rubber Fluororubber (FPM), vulcanized rubber, isoamyl rubber, polysulfide rubber (T), chlorosulfonated polyethylene rubber (CSM), thermoplastic rubber, chlorohydrin rubber, polyurethane rubber, acrylate rubber (ACM), silicone rubber, other rubber raw materials, etc.
2. Admixture
Carbon black, zinc oxide, curing agent, accelerator, antioxidant, various oils, etc
2、 Test content of rubber raw materials
1. Incoming inspection. Analyze the composition of various rubber raw materials and the content of corresponding substances.
2. Scientific diagnosis of the causes of product quality problems caused by rubber raw materials
3. According to the requirements of the government supervision department, provide standard test reports of rubber raw materials such as chemical element content, physical and chemical function determination, product inspection and certification, ROHS, reach, etc,.
3、 Rubber compound sample test items
1. Test items of rubber mechanical properties: hardness, tensile property, tear property, compression property, impact property, friction property, fatigue resistance property, peel strength, tear strength, adhesion strength, etc
2. Rubber environmental reliability test items: life assessment, aging test (UV, xenon lamp, carbon arc lamp, ozone), salt spray test, oil resistance and other liquid test, high and low temperature impact, high and low temperature cycle test, etc
3. Test items of rubber combustion performance: fire rating, vertical combustion, horizontal combustion, smoke density, oxygen index, flame spread rate, etc
4. Test items of electrical properties of rubber raw materials: surface resistivity, volume resistivity, breakdown voltage, dielectric constant, loss tangent, etc
5. Test items of physical and chemical indexes of rubber: volatile matter, ash, Mooney viscosity, thermal stability, shear stability, vulcanization curve, Mooney scorch time, rubber thermal conductivity, rubber steam transmission rate, rubber swelling index, rubber chemical metal, sulfur and polymer, etc.
[refined] rubber formula design method set, rubber engineer growth road!
1. Table of common rubber properties and media resistance (Collection)
2. 80 rubber knowledge answers, do it! (reply to see the answer)
3. Nearly 30 rubber books are presented and downloaded on the Internet!
4. Examination paper for staff training of a rubber product company
5. The difference between purchasing compound and enterprise's own compound!
6. Rubber training materials: characteristics of raw rubber and compounding agent
7. About rubber mold design and mold pollution!
8. Chinese English comparison of various rubber testing equipment and tire production equipment
9. Mixing process video of open mill (excellent materials)
10. Rubber network training course, online learning, rich information.
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