The difference between rubber and polyurethane
Dry glue in water does not exceed 1%, in the process can be volatile, but the moisture content is too long, will not only make the rubber easy to mildew during storage, but also the impact of rubber processing, such as mixing with the agent is easy to agglomerate; easy to blister calendering and extrusion process, the bubble or a sponge the curing process etc..
Proteins can promote the vulcanization of rubber and retard aging. On the other hand, the protein has strong water absorption, can cause rubber moisture absorption, mildew, insulation degradation, protein and increase heat generation shortcomings.The acetone extractives are some fatty acids and steroids, some natural antioxidants and accelerators, and can help with the powdery agent in the process of mixing and dispersion of rubber softening effect.Ash containing mainly magnesium phosphate and calcium phosphate salts, copper, manganese, iron and other metal compounds is very small, because these valence metal ion can promote the aging of rubber, so their content should be controlled.
Rubber is a latex made from rubber, tree, rubber, and grass. It is made of flexible, insulating, impermeable and air. High elastic polymer compound. It is divided into two kinds: natural rubber and synthetic rubber. Natural rubber is made from rubber, tree, rubber, grass and other plants. The synthetic rubber is obtained by polymerization of various monomers. Rubber products are widely used in industry or in all fields of life.Rubber is made from latex, and a portion of the non - rubber contained in the latex is left in the solid rubber. In general natural rubber contains rubber hydrocarbon 92%-95%, but not rubber hydrocarbon accounts for 5%-8%. Because of the different processing methods, different habitats and even different seasons, the proportion of these ingredients may vary, but basically within the scope
Rubber and polyurethane are two different materials. The advantages of its use are slightly different, so to speak, rubber is the most widely used.
