The Study Of Physical And Heat-Aging Properties Of Chlorinated Cis-1,4-Polybutadiene Composite

In this thesis, the physical and heat-aging properties of chlorinatedcis-1, 4-polybutadiene composite were mainly studied, and the swelling properties ofthe composite were also studied.Take polyester short fiber, nylon short fiber and cotton powder short fiber forexamples, a study was made on the influence of content and kind of short fibers onphysical and heat aging properties of chlorinated cis-1, 4-polybutadiene composites.The experiment results showed that the rigidity of the composite inchlorinatedcis-1, 4-polybutadieneeased as the content of the fiber inchlorinatedcis-1, 4-polybutadieneeased, and the tear strength, the modulus at 20% in L directionalso inchlorinated cis-1, 4-polybutadieneeased; thereinto, the reinforcement effect ofnylon short fiber was the best, and the cotton powder short fiber was the worst. As thecontent of the fiber inchlorinated cis-1, 4-polybutadieneeased, the heat aging propertiesof the composites were inchlorinated cis-1, 4-polybutadieneeased differently; thereinto,the composite of Nylon-chlorinated cis-1, 4-polybutadiene was the best. As the contentof the fiber inchlorinated cis-1, 4-polybutadieneeased, the swelling properties of thecomposites also inchlorinated cis-1, 4-polybutadieneeased evidently; the properties ofshort fiber -chlorinated cis-1, 4-polybutadiene composites showed anisotropism. Takepretreated and none-pretreated nylon short fiber for examples, a study was made on the influence of the effects of interfacial adhesion between short fiber and rubber onphysical, heat aging and swelling properties of chlorinated cis-1, 4-polybutadienecomposites. The results showed that, the better the interracial adhesion of thecomposites, the better the, physical, heat-aging, and swelling properties.The study was made on the influence of length of short fibers on physical,swelling and heat-aging properties of chlorinated cis-1, 4-polybutadiene composites.The result showed that the long one has better reinforcing effect (especially in tearstrength and the modulus at 20%), better heat-aging and swelling properties.