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Super wear-resisting polyurethane finishing paint and preparation method thereof

A polyurethane topcoat and super wear-resistant technology, applied in the field of painting, can solve the problems that the modified quartz sand cannot be uniformly and stably dispersed, the compatibility and interfacial force are not very high, and the performance of the polyurethane topcoat is reduced. The effect of strong acting force, strong interfacial force and not easy to settle

Inactive Publication Date: 2019-03-19
上海博歌建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when quartz sand is directly filled into the resin base material, some quartz sand is randomly aggregated together instead of being evenly dispersed in the resin base material, which greatly reduces the performance of the polyurethane topcoat.
In the prior art, the quartz sand is generally modified, but the effect is not very good, because after the quartz sand is treated with a small molecule coupling agent, the grafted molecular chain is relatively short, and the modified quartz sand and the resin base material The compatibility and interfacial force between them are still not very high, and the modified quartz sand cannot be uniformly and stably dispersed in the matrix

Method used

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  • Super wear-resisting polyurethane finishing paint and preparation method thereof
  • Super wear-resisting polyurethane finishing paint and preparation method thereof
  • Super wear-resisting polyurethane finishing paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: A super wear-resistant polyurethane topcoat, each component and its corresponding parts by weight are shown in Table 1, and are prepared through the following steps:

[0042] Step 1, preparation of modified quartz sand: Add nano-quartz sand, butyl acetate and diphenylmethane diisocyanate into the reaction kettle, stir and mix evenly, continue stirring at a temperature of 60°C for 1 hour, then add triethylamine and polycarbonate Ester diol and continue to stir for 2h, after the reaction is completed, cool to room temperature to obtain modified quartz sand;

[0043] Step 2, preparation of component A; put the polyurethane resin and diluent in corresponding parts by weight into the reaction kettle, use a high-speed disperser to disperse and stir, and control the speed at 280r / min, after stirring evenly, add modified quartz sand, disperse agent, defoamer, leveling agent, continue to stir for 15 minutes, then add anti-settling agent, increase the speed to 580r / ...

Embodiment 2-8

[0047] Example 2-8: A super wear-resistant polyurethane topcoat, the difference from Example 1 is that each component and its corresponding parts by weight are shown in Table 1.

[0048] Each component and parts by weight thereof in table 1 embodiment 1-8

[0049]

Embodiment 9

[0050] Embodiment 9: A preparation method of a super wear-resistant polyurethane topcoat, the difference from Example 1 is that in step 2, component A is prepared; polyurethane resin and diluent of corresponding parts by weight are put into the reaction kettle , use a high-speed disperser to disperse and stir, and the speed is controlled at 280r / min. After stirring evenly, add modified quartz sand, dispersant, defoamer, and leveling agent, continue stirring for 15 minutes, and then add wax powder and anti-settling agent. The rotating speed was increased to 580r / min, and the stirring was continued for 20 minutes, wherein the wax powder was 0.8 parts by weight.

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Abstract

The invention discloses super wear-resisting polyurethane finishing paint and a preparation method thereof, and relates to the technical field of paint. A technical key point is that the super wear-resisting polyurethane finishing paint comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 48-60 parts of polyurethane resin, 3-6 parts of nano quartz sand, 20-40 parts of an organic solvent, 0.1-1.2 parts of isocyanate, 0.1-0.6 parts of trimethylamine, 4-12 parts of polyester polyol, 3-11 parts of a diluent, 0.1-1 part of a dispersant, 0.1-0.6 parts of a defoaming agent, 0.2-0.6 parts of a flatting agent, and 0.1-1 part of an anti-settling agent; the component B comprises a polyurethane curing agent; and a weight ratio of thecomponent A and the component B is 5:1. The polyurethane finishing paint prepared by using the formula has the advantages of fine dispersion, and high temperature and wear resistance.

Description

technical field [0001] The invention relates to the technical field of painting, more specifically, it relates to a super wear-resistant polyurethane topcoat and a preparation method thereof. Background technique [0002] Polyurethane topcoat is a two-component polyurethane anti-corrosion topcoat composed of synthetic resin as base material, coloring pigment and curing agent. Polyurethane topcoat has good chemical resistance and water resistance, and the formed paint film is tough and glossy. It is widely used on floors and automobile surfaces. When the polyurethane topcoat is applied to the floor area with heavy traffic, it needs to have good abrasion resistance, otherwise it will be easily scratched by tires and heels. [0003] Quartz sand has the characteristics of high strength, high hardness and wear resistance. As an inorganic filler mixed with resin base material, it can significantly improve the wear resistance of polyurethane topcoat. However, when the quartz sand...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/62
CPCC08K2201/011C09D7/62C09D175/04C08K9/04C08K3/36
Inventor 邱勤忠黄强杜士赢
Owner 上海博歌建材有限公司
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