Early rubber was taken from the latex of rubber trees, rubber grass, and other plants, and processed to make an elastic, insulating, and impervious to water and air material. Highly elastic polymer compounds. Divided into natural rubber and synthetic rubber two kinds. Natural rubber is extracted from rubber trees, rubber grass and other plants after processing made of gum; synthetic rubber by a variety of monomers by the polymerization reaction and get. Rubber products are widely used in industry or all aspects of life.
:Rubber composition: natural rubber is manufactured from latex, latex contained in the non-rubber components of a portion of the natural rubber to stay in the solid. General natural rubber contains 92% -95% of rubber hydrocarbons, and non-rubber hydrocarbons accounted for 5% -8%. Due to the different methods of production, different places of origin and even different seasons of rubber harvesting, the proportion of these components may vary, but basically within the range.
Protein can promote the vulcanization of rubber and delay aging. On the other hand, protein has a strong water absorption, can cause the rubber moisture mold, insulation decline, protein also increase the shortcomings of heat.
Acetone extract is a number of high-level fatty acids and steroids, some of which play a natural antioxidant and accelerator role, and some can help the powder with the agent dispersed in the mixing process and soften the role of raw rubber.
The ash mainly contains magnesium phosphate and calcium phosphate salts, a very small amount of copper, manganese, iron and other metal compounds, because these metal ions can promote the aging of rubber, so their content should be controlled.
The moisture in the dry rubber is not more than 1%, which can be volatilized in the process, but when the moisture content is too much, it will not only make the raw rubber easy to mildew during storage, but also affect the processing of rubber, such as mixing with the agent is easy to agglomerate; calendering, pressing out the process of air bubbles, bubbles in the vulcanization process or spongy and so on.