天然橡胶具有高弹性、微塑性、非常好的机械强度、小的磁滞损耗、多次变形时

Natural rubber has high elasticity, microplasticity, very good mechanical strength, small hysteresis loss, and low heat generation during multiple deformations, so its flexibility is also very good, and because it is a non-polar rubber, its electrical insulation performance good. The chemical properties of natural rubber. Due to the unsaturated double bond, natural rubber is a substance with strong chemical reactivity. Light, heat, ozone, radiation, bending deformation, and metals such as copper and manganese all promote rubber aging. Anti-aging is the fatal weakness of natural rubber. However, the natural rubber added with antioxidants can still be used as usual after being exposed to sunlight for two months and stored in the warehouse for three years. The medium resistance of natural rubber. Natural rubber has good alkali resistance, but is not resistant to concentrated strong acids. Since natural rubber is a non-polar rubber, it can only resist some polar solvents and swell in non-polar solvents. Therefore, its oil resistance and solvent resistance are very poor. Generally speaking, hydrocarbons, halogenated hydrocarbons, carbon disulfide, ethers, higher ketones and higher fatty acids have a dissolving effect on natural rubber, but their solubility is affected by the degree of plasticization, while lower ketones, lower esters and alcohols have a natural rubber No solvent effect.

Natural rubber has high elasticity, microplasticity, very good mechanical strength, small hysteresis loss, many deformations of low heat, so its flexibility is also very good, and because it is non-polar rubber, its electrical insulation performance is good. The chemical properties of natural rubber. Due to unsaturated double bonds, natural rubber is a substance with strong chemical reaction ability. Metals such as light, heat, ozone, radiation, bending deformation, and copper and manganese contribute to rubber aging. Anti-aging is the Achilles heel of natural rubber. However, natural rubber with antioxidants can still be used as usual after two months of exposure to sunlight and stored in a warehouse for three years. Medium resistance to natural rubber. Natural rubber has good resistance to alkaline, but not strong acid. Since natural rubber is non-polar rubber, it can only resist some polar solvents, and in the non-polar solvent swells. As a result, its oil resistance and solvent resistance are very poor. In general, hydrocarbons, halogenated hydrocarbons, carbon disulfide, ether, advanced ketones and high fatty acids have dissolved effects on natural rubber, but their solubility is affected by the degree of plasticity, while low-grade ketones, low-grade esters and alcohols have no solvent effect on natural rubber.

Natural rubber has high elasticity, micro plasticity, very good mechanical strength, small hysteresis loss and low heat generation during multiple deformation, so its flexibility is also very good, and because it is non-polar rubber, its electrical insulation performance is good. Chemical properties of natural rubber. Due to unsaturated double bond, natural rubber is a kind of substance with strong chemical reaction ability. Light, heat, ozone, radiation, bending deformation and metals such as copper and manganese all promote the aging of rubber. Aging resistance is the Achilles' heel of natural rubber. However, natural rubber with antioxidants can still be used as usual after two months of exposure to sunlight and three years of storage. Medium resistance of natural rubber. Natural rubber has good alkali resistance but not strong acid resistance. Because natural rubber is nonpolar rubber, it can only resist some polar solvents, but expand in nonpolar solvents. Therefore, its oil resistance and solvent resistance are very poor. Generally speaking, hydrocarbons, halogenated hydrocarbons, carbon disulfide, ethers, higher ketones and higher fatty acids have dissolving effect on natural rubber, but their solubility is affected by the degree of plasticization, while lower ketones, lower esters and alcohols have no solvent effect on natural rubber.<br>