Rubber sheet isolating agent

Abstract

The invention provides a rubber sheet isolating agent. The rubber sheet isolating agent is prepared from the following raw materials in parts by weight: 30-50 parts of bentonite, 10-30 parts of silicafume, 10-30 parts of light calcium carbonate, 5-10 parts of zinc oxide, 3-5 parts of fumed silicon oxide, 13-30 parts of fatty acid derivative, 4-6 parts of a surfactant, 0.6-1 part of an organic silicone solid defoamer and 0.2-0.3 part of drier. According to the rubber sheet isolating agent, the isolation effect is outstanding, the stack sticking phenomenon of rubber materials is well controlled, and rubber sheets still has excellent isolation effect for being stacked more than one month; the rubber sheet isolating agent can be widely used in the isolation of different types of rubber sheets, so that the rubber sheets do not bond with one another, and various properties of rubber can be maintained; and the manufacturing process is simple, use amount is low, the isolation ability is high,and the rubber sheet isolating agent is especially suitable for isolation of high-viscosity rubber sheets such as bromobutyl rubber.

Description

technical field [0001] The invention belongs to the technical field of rubber film processing, in particular to a rubber film release agent, in particular to a rubber processing aid which significantly improves the mutual adhesion of films. Background technique [0002] In order to prevent the film from sticking, the release agent must be impregnated after the rubber is mixed and plasticized to release the film. It is required that the release agent not only has excellent isolation and anti-adhesion effect but also has no adverse effect on the performance of the rubber. [0003] There are several types of film release agents on the market, such as paste, liquid, and powder. The main components of paste type and liquid type release agents are fatty acid soaps, which are made by saponification of animal fats. Generally, the price is relatively low, but these two types of release agents have a strong odor, and a large amount of foam will be generated during use, and unsaponifie...

AI Technical Summary

Problems solved by technology

The main components of paste type and liquid type release agents are fatty acid soaps, which are made by saponification of animal fats. Generally, the price is relatively low, but these two types of release agents have a strong odor, and a large amount of foam will be generated during use, and unsaponified oils cannot be completely Dissolution, so the isolation effect is not ideal, and it has a great impact on the performance of the rubber compound

Powdery release agents are mainly surfactants, powder materials and their compound products. There are many product brands, but the quality is uneven, the suspension stability is poor, and a large amount of sediment is deposited on the bottom of the dipping tank. The sediment is difficult to disperse. It will affect the quality of rubber products, especially the airtightness of the inner tube of the tire. During the production process, the release agent pool must be cleaned every once in a while, and the film will drop powder after drying, and the phenomenon of sticking often occurs during use. , in hot weather in summer, especially the sealing layer and sidewall of radial tires are more prominent

Because the problem of sticking can not be effectively solved, some rubber materials need to add plastic film pads when the film is unloaded. Even so, gasoline is often used to help pick up materials in the next process. The production needs to return to the previous process for supplementary processing, resulting in a lot of waste of manpower and material resources. At the same time, due to the existence of unsaponified oil, there is a large amount of undissolved soap sludge in the spacer, which adheres to the surface of the rubber compound. When used in the rubber compound, it is easy to cause the adhesive force between the rubber compound and the steel wire to decrease, thereby affecting the performance of the finished tire. The rubber industry is in urgent need of a film release agent with excellent performance.