Anticorrosion demoulding powder combination and preparation method thereof

Abstract

The invention discloses an anticorrosion demoulding powder combination and a preparation method of the anticorrosion demoulding powder combination. The combination is composed of FEVE fluororesin, fluorine-contained micro powder, silicon dioxide, titanium dioxide, a flatting agent, a defoaming agent and a curing agent. The preparation method comprises the steps that all components are weighed proportionally and stirred and premixed, then, melt extrusion is carried out through a screw extruder, and finally, through smashing and grinding, the anticorrosion demoulding powder combination is prepared. The anticorrosion demoulding powder combination is mainly applied to anticorrosion demoulding treatment of a surface of a rubber and plastic product moulding die, and the adhesive force between a combination coating and a base material of the die is high; the coating is good in anti-corrosion property and excellent in non-viscosity property, wear resistance and hardness are both considered, and the continuous demoulding performance is good; and the powder combination is low in VOC content and friendly to the environment.

Description

technical field [0001] The invention relates to an anti-corrosion demoulding powder composition and a preparation method thereof, which belongs to the field of mold anti-corrosion technology and is mainly used for anti-corrosion and demoulding treatment on the surface of a mold for rubber and plastic preparation. Background technique [0002] With the rapid development of industrial production, a large number of rubber products are used in various household appliances, audio-visual equipment, office equipment, auto parts, etc., and are developing in the direction of miniaturization, light weight, and precision. Therefore, professionals want rubber product molds to be firm and reliable, flexible to use, and easy to operate. The mold is a relatively expensive tool. If the service life is not high, the number of disassembly and assembly will be more. In this way, the time-consuming and labor-intensive disassembly and assembly of the mold will greatly reduce the productivity of ...

AI Technical Summary

Problems solved by technology

However, pure fluororesin has disadvantages such as high curing temperature, complex construction process, low gloss of the coating film, and single color, and the surface hardness of the pure PTFE resin coating film is not enough, the adhesion is poor, and it will fall off after a short time after use.

[0009] Adhesives are combined with fluororesins to form non-stick coatings with strong adhesion, such as polyethersulfone and fluororesins disclosed in patents such as CN1104465C, CN1069336C, and CN1051790C to form non-stick coatings, but this coating is mainly used for non-stick pan surfaces. When used in molds, the contact angle is low and the non-stickiness is not very ideal, so the release effect is poor

[0010] The existing technology cannot provide a kind of anticorrosion release powder composition suitable for various rubber and plastic product molding molds, which has strong corrosion resistance, has both wear resistance and hardness, good mold release, and is environmentally friendly.

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