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中文简体Adding additives to rubber is an important part of the rubber processing process. This is because it helps to improve the properties of rubber. These additives can be used in many different ways, from modifying oils and silicas to increasing the flow of the rubber.
During the early part of the 20th century, the rubber industry was the first to utilize precipitated silicas as rubber processing additives. The use of such additives in the tyre industry has made possible improved performance in tire treads. These additives can also be used in other applications.
Precipitated silicas are typically made in a number of ways. Most commonly, the method involves acidification of sodium silicate solutions. The sodium silicate solution reacts with other silica acids and acetate to produce a precipitate. The precipitate is then filtered out and dried.
Precipitated silicas have been used as fillers in elastomers. These additives can improve the abrasion resistance, tear strength, heat resistance, and permanence of rubber compounds. In addition, the addition of precipitated silicas can increase the modulus and durability of the rubber composition.
These oils have been used to modify thermoset polymers. They can also be used as additives in rubber compositions. Soybean oil has been used as an alternative processing oil for rubbers, and has shown improvements in tensile strength, tear strength, and thermal stability. It also provides better scorch safety and curing time.
Various types of rubber processing additives are available in the market. The choice of the best additive depends on the type of rubber, the production process and the end product. Some of them are used in different forms. Among these, zinc fatty acid ester is considered the most popular type. It is usually formed through the reaction of fatty acid with zinc oxide.
