Environment-friendly separant for rubber film, separant solution and separant coating process

Abstract

The invention discloses an environment-friendly separant for a rubber film, a separant solution and a separant coating process. The environment-friendly separant is composed of, by mass, 40-50 parts of zinc stearate, 35-45 parts of talcum powder and 10-20 parts of paraffin oil. During conventional rubber processing, serious dust pollution is caused by adopting a mode of direct coating of talcum powder, and film performance of rubber is affected due to nonuniform coating. The environment-friendly separant is low in formula cost, uniform in coating and good in film separating effect, and the separant coating process is simple, convenient, feasible and free of dust pollution.

Description

technical field [0001] The invention relates to the field of rubber processing, in particular to an environment-friendly release agent for rubber films, a release agent solution and a release agent coating process. Background technique [0002] Rubber processing is to process raw rubber and compounding ingredients into a plastic state through rubber mixing equipment, and modify the rubber according to different requirements. General rubber processing procedures include: internal mixer mixing, open mill mixing, calendering, isolation, cooling and sheet collection. Since the rubber is not vulcanized and still has plasticity during the rubber mixing process, it will cause sticking and cannot be used. The traditional rubber film isolation process is to apply talcum powder on the film after the film passes through the talc powder box, so as to avoid film adhesion. This method will cause the following problems: 1. The film surface is coated with talcum powder and then transported...

AI Technical Summary

Problems solved by technology

Since the rubber is not vulcanized and still has plasticity during the rubber mixing process, it will cause sticking and cannot be used

The traditional rubber film isolation process is to apply talcum powder on the film after the film passes through the talc powder box, so as to avoid film adhesion. This method will cause the following problems: 1. The film surface is coated with talcum powder and then transported During the process, the talcum powder will continue to fall off, and the talcum powder will continue to fall off and fly up during lamination, which will cause serious pollution to the surrounding environment of rubber mixing and cause great harm to the operators; 2. Uneven coating of talcum powder leads to rubber The performance of the material is unstable; 3. After the rubber film with a large amount of talc powder is extruded by the extruder, there may be talc powder particles on the surface, resulting in poor apparent quality of rubber products

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