Release agent for coating release paper, preparation method of release agent and release paper prepared by utilizing release agent

Abstract

The invention discloses a release agent for coating release paper, a preparation method of the release agent and release paper prepared by utilizing the release agent. The release agent comprises the following raw materials by weight percent: 30-60% of amino silicon oil and 40-70% of epoxy diluent. The preparation method comprises the following steps of: uniformly mixing the amino silicon oil with the epoxy diluents in proportion, heating the mixture to 50 to 80 DEG C, reacting for 1-6 hours, and cooling to the room temperature, so as to obtain the release agent for coating the release paper. The release paper sequentially comprises raw paper, a bottom coating and a release coating, wherein the bottom coating and the release coating are sequentially adhered to one side of the surface of the raw paper, and the release coating is formed after the release agent for coating the release paper is coated and thermally cured. By combining a formula disclosed by the invention with the preparation method disclosed by the invention, the release effect of the prepared release agent is good, the formula and the preparation method are relatively simple and suitable for large-scale industrial production, and the production cost is low.

Description

technical field [0001] The invention relates to the field of artificial leather processing and manufacturing, in particular to a release agent for coating release paper, a preparation method thereof, and a release paper prepared by using the release agent. Background technique [0002] Coated release paper for artificial leather production belongs to a special type of release paper, which is the carrier and temporary template for the manufacture of polyurethane artificial leather (PU leather) and polyvinyl chloride artificial leather (PVC leather). Coated release papers for artificial leather production usually have a two-layer structure: the first layer is base paper as a substrate, and the second layer is a release coating. The general manufacturing method is to apply a layer of primer on the base paper to prevent the penetration of the release agent, and then coat the coating containing the release agent, emboss and cure, and form a release coating on the primer. [0003...

AI Technical Summary

Problems solved by technology

[0007] Radical radiation curing system has been widely used in the release paper industry, but it is generally necessary to isolate oxygen during the processing to prevent incomplete surface curing due to the inhibition of oxygen molecules, so the equipment requirements are relatively high; on the other hand, The shrinkage of the system after curing is large, which affects the performance and service life of the product