Wear-resistant coating for stone roll surface and preparation method thereof

Abstract

The invention relates to the technical field of coatings, and provides a wear-resistant coating for a stone roll surface and a preparation method thereof. The wear-resistant coating solves the problems that an existing stone roll has short service life, the surface of dewatered paper is rough, and the dehydration efficiency is low. The wear-resistant coating comprises a first coating covering theroll surface and a second coating arranged on the first coating, wherein the first coating comprises the following raw materials according to the parts by weight: 65 to 72 parts of alumina, 10 to 15 parts of titanium dioxide, 6 to 8 parts of yttrium oxide, 3 to 7 parts of cobalt, 4 to 6 parts of nickel, 2 to 4 parts of manganese, 2.4 to 3.2 parts of glass powder, 1.2 to 1. 8 parts of artificial diamond, and 1.5 to 2 parts of molybdenum disulfide; and the second coating comprises the following raw materials according to the parts by weight: 48-60 parts of organic silicon resin, 1-3 parts of coupling agent, 1.8 to 2.5 of toughening agent, 3 to 5 parts of silicone oil, 4 to 8 parts of polytetrafluoroethylene, 2.5 to 3.5 parts of polyvinyl butyral, 2 to 7 parts of talcum powder, 0.9 to 1.6 ofantioxidant, 8 to 12 parts of filler, and 15 to 20 parts of trimethyl hexamethylene diamine.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a wear-resistant coating for a stone roll surface and a preparation method thereof. Background technique [0002] The press section is an important dewatering area of ​​the paper machine, which further dehydrates the formed wet paper sheets by means of pressure. It consists of two rollers with hard and soft surfaces, such as common stone rollers and rubber rollers, to form a press. Stone rollers are usually made of a material that peels off the paper easily, in the past granite was used. Granite has the characteristics of smooth surface, high hardness, high strength, acid resistance and alkali resistance. Granite roller surface is smooth, but there are many small pores and good air permeability. Therefore, wet paper is easy to peel off, which is especially beneficial for splicing Paper operation, widely used in various paper machines. During operation, if the speed is too fas...

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Problems solved by technology

[0003] Therefore, in view of the above content, the present invention provides a wear-resistant coating for the surface of stone rollers and its preparation method, which solves the problems of short service life of stone rollers, rough surface of paper after dehydration, and insufficient dehydration efficiency in the prior art