A kind of rubber film release agent

Abstract

The invention provides a rubber film release agent, comprising the following raw materials in parts by weight: 30-50 parts of bentonite; 10-30 parts of silica fume; 10-30 parts of light calcium carbonate; 5-10 parts of zinc oxide; 3-5 parts of silicon oxide; 13-30 parts of fatty acid derivatives; 4-6 parts of surfactants; 0.6-1 parts of organic silicon solid defoamer; 0.2-0.3 parts of drier. The rubber film isolating agent of the present invention has outstanding isolating effect, the sticking phenomenon of rubber materials has been well controlled, and the film still has excellent isolating effect after being stacked for more than one month. It can be widely used in the isolation of different types of rubber films, so that they do not bond with each other and can keep various properties of the rubber unchanged. The invention has the advantages of simple manufacturing process, low dosage and strong isolation ability, and is especially suitable for the isolation of high-viscosity sheets such as brominated butyl 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.