Chemical properties
of natural rubber is the chemical name cis-1,4-polyisoprene, ie isoprene (C5H8), where n is 15-20000 since the rubber components is fairly non-polar hydrocarbons. The rubber is soluble in the solvent polarity, such as benzene, hexane, etc. In general, natural rubber, structural arrangement of the molecules are amorphous, but in some conditions, the molecules of rubber can be arranged quite a mess. low temperatures or when seized It can cause crystals to crystallize due to low temperatures to make the tires very hard, but if the temperature rises. Yang will weaken and return to its original state. While crystallization due to stretch tires have good mechanical properties. That is, the tire is highly resistant to traction. Resistant to tear and abrasion resistant high.
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