Preparation method for high-strength high-thermal-stability water-based varnish

A water-based varnish and high-strength technology, which is applied in the field of synthetic resin preparation, can solve the problems of poor thermal stability, insufficient wear resistance, and poor strength of varnish, and achieve the effects of stable internal structure, improved strength, and improved thermal stability

Inactive Publication Date: 2018-11-23
朱东洋
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a preparation method of high-strength and high-heat-stable water-based varnish in view of the defects of poor thermal stability and poor strength and insufficient wear resistance of current varnishes

Method used

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  • Preparation method for high-strength high-thermal-stability water-based varnish

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Embodiment Construction

[0022] In terms of parts by weight, weigh 10-14 parts of graphite, 6-8 parts of potassium permanganate powder and 20-24 parts of concentrated sulfuric acid with a mass fraction of 80-90% into a beaker, and put the beaker into a In a water bath at ~5°C, stir with a stirrer at a speed of 300~350r / min for 70~90min, then increase the temperature of the water bath to 30~33°C, and react at a constant temperature for 2.5~2.7h to obtain a suspension; mix the above suspension with Put deionized water into the beaker at a mass ratio of 1:2 to obtain a mixed solution, then place the beaker in a water bath with a water bath temperature of 85-90°C, then add anhydrous ethanol with a mixed solution mass of 25-30% to the beaker and After mixing and stirring at a speed of 400-450r / min for 20-30min, add 10-13% of the mixed liquid mass fraction of acetic acid solution with a mass fraction of 80-90%, and mix and stir at a speed of 400-450r / min for 20-30min Obtain a solid-liquid mixture; filter th...

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Abstract

The invention relates to a preparation method for high-strength high-thermal-stability water-based varnish, and belongs to the technical field of synthetic resin preparation. According to the preparation method, graphene oxide is prepared and added into the varnish, graphene has a compact molecular structure, so that the varnish can have good mechanical strength, meanwhile, a large amount of hydrophilic epoxy groups such as hydroxyl groups and carboxyl groups are introduced into the graphene oxide, acrylate is modified by using organic silicon, so that organic silicon components are combined on acrylate molecular chains, the organic silicon can be combined with polyurethane molecular chains so as to generate Si-C bonds, so that all layers of the polyurethane molecular chains are connectedto achieve a bridge effect, the molecular chains of each layer are mutually staggered, the molecular structure is more compact, so that the thermal stability of the varnish is improved, meanwhile, thegraphene oxide has good thermal conductivity, the heat dissipation effect of the varnish is enhanced through evaporation and heat absorption of free water, and therefore the thermal stability of thevarnish is further improved and a wide application prospect is achieved.

Description

technical field [0001] The invention relates to a preparation method of high-strength and high-heat-stable water-based varnish, which belongs to the technical field of synthetic resin preparation. Background technique [0002] Varnish, a kind of synthetic resin, now usually refers to the surface transparent varnish, which is made of base material and additives, etc., without adding any pigments, and the oil is shiny after film formation, commonly known as varnish, there are UV varnish and PU varnish points. The earliest varnish refers to tung oil. [0003] Varnish is mainly used for surface treatment of printed matter to increase its gloss and water resistance; a layer of colorless transparent paint is applied on the surface of printed matter such as paper by roller coating or spraying, and a uniform layer is formed after leveling, curing, and calendering. Transparent bright layer, after the paper product is varnished, the surface gloss, smoothness, water resistance and we...

Claims

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Application Information

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IPC IPC(8): C09D133/08C09D7/62C08F220/18C08F230/08C08F220/06
CPCC08F220/18C08F220/1804C08K3/04C08K9/02C09D7/62C09D133/08C08F230/08C08F220/06
Inventor 朱东洋蒋梦成朱彩娣
Owner 朱东洋
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