The early rubber was made from latex of rubber trees, r […]
The early rubber was made from latex of rubber trees, rubber grass and other plants, and was made of elastic, insulating, water-impermeable and air-resistant materials. Highly elastic polymer compound. Divided into two kinds of natural rubber and synthetic rubber. Natural rubber is processed by extracting gum from plants such as rubber trees and rubber grasses; synthetic rubber is obtained by polymerization of various monomers.
Synthetic rubber is a polymer made from petroleumRubber Gaskets Factory and natural gas and polymerized from diolefins and olefins. It was produced in the early 20th century and has developed rapidly since the 1940s. Synthetic rubber is generally not as comprehensive as natural rubber, but it has high elasticity, insulation, air tightness, oil resistance, high temperature resistance or low temperature. It is widely used in industry, agriculture, national defense, transportation and daily life. It is a necessary material for manufacturing aircraft, warships, automobiles, tractors, harvesters, water irrigation and drainage machinery, medical equipment, etc.
Raw rubber mastication is a process in which raw rubber is transformed from a tough elastic state into a soft, easy-to-process plastic state by mechanical stress, heat, oxygen or the addition of certain chemical agents.
The purpose of raw rubber mastication is to reduce its elasticity, increase plasticity, and obtain appropriate fluidity to meet various processing processes such as mixing, sub-diffraction, extrusion, molding, vulcanization and glue manufacturing, and sponge rubber manufacturing. Requirements.
Mastering proper plasticity and plasticity is critical to the processing of rubber products and the quality of finished products. The plasticity should be reduced as much as possible while meeting the requirements of the processing technology. With the advent of constant viscosity rubber and low viscosity rubber, some rubbers have been directly kneaded without the need for mastication.