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A kind of two-component water-based polyurethane anti-scratch and wear-resistant PVC coating and preparation method thereof

A water-based polyurethane, two-component technology, applied in the field of coatings, can solve the problems of unsustainable effect, poor scratch resistance, coating and paint layer anti-scratch, wear resistance, stain resistance and other problems, to achieve wear resistance Non-sticky, good hardness, improve the effect of scratch resistance

Active Publication Date: 2022-07-22
FOSHAN JINGXIN HUIMING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention increases the high weather resistance, non-yellowing and long-lasting elasticity of the coating by adding water-based elastic polycarbonate, but the resin itself has poor scratch and abrasion resistance, so silicone oil or silicone modified polymer is added to the formula To improve the scratch resistance and wear resistance of the coating
However, this kind of additives such as silicone oil and hand feeling agent are directly added for modification. As time goes by, these added main agents will naturally dissociate from the coating and the paint layer, so that the coating and paint layer Scratch resistance, wear resistance, stain resistance and other performances are greatly reduced, so the effect is not long-lasting

Method used

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  • A kind of two-component water-based polyurethane anti-scratch and wear-resistant PVC coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A two-component water-based polyurethane scratch-resistant and wear-resistant PVC coating, in parts by weight, comprising 10 parts of a main agent and 0.3 parts of a water-based HDI curing agent;

[0038] The main agent, in parts by weight, includes: 115g water-based polyurethane resin, 1.1g polyether-grafted polysiloxane containing two terminal hydroxyl groups, 2g film-forming agent, 0.5g dispersant, 4.7g auxiliary agent, 17.6g N,N-Dimethylformamide.

[0039]The water-based polyurethane resin includes 100g of PU-580E water-based self-extinguishing aliphatic polyurethane resin (Wonkel) and 15g of PUD6721 water-based aliphatic polyurethane resin (Tongde Chemical).

[0040] The polyether-grafted polysiloxane containing two terminal hydroxyl groups is a reactive silicone slip agent Silicone-9350 (Baiyuan Chemical).

[0041] The film-forming agent is dipropylene glycol methyl ether.

[0042] The dispersant is 7155W vinyl resin type amide polymer dispersant (Siloke).

[0...

Embodiment 2

[0055] A two-component water-based polyurethane scratch-resistant and wear-resistant PVC coating, in parts by weight, comprising 10 parts of a main agent and 0.3 parts of a water-based HDI curing agent;

[0056] The main agent, in parts by weight, includes: 10g water-based polyurethane resin, 0.8g polyether-grafted polysiloxane containing two terminal hydroxyl groups, 1.6g film-forming agent, 0.4g dispersant, 4.4g auxiliary agent, 12g N , N-dimethylformamide.

[0057] The waterborne polyurethane resin includes 100g PU-580E waterborne self-extinguishing aliphatic polyurethane resin (Wonkel) and 10g PUD6721 waterborne aliphatic polyurethane resin (Tongde Chemical).

[0058] The polyether-grafted polysiloxane containing two terminal hydroxyl groups is a reactive silicone slip agent Silicone-9350 (Baiyuan Chemical).

[0059] The film-forming agent is dipropylene glycol methyl ether.

[0060] The dispersant is 7155W vinyl resin type amide polymer dispersant (Siloke).

[0061] Th...

Embodiment 3

[0071] A two-component water-based polyurethane scratch-resistant and wear-resistant PVC coating, in parts by weight, comprising 10 parts of a main agent and 0.3 parts of a water-based HDI curing agent;

[0072] The main agent, in parts by weight, includes: 120g water-based polyurethane resin, 2.7g polyether-grafted polysiloxane containing two terminal hydroxyl groups, 3g film-forming agent, 0.75g dispersant, 5.1g auxiliary agent, 24g N , N-dimethylformamide.

[0073] The polyurethane resins include 100 g of PU-580E water-based self-extinguishing aliphatic polyurethane resin (Wonkel) and 20 g of PUD6721 water-based aliphatic polyurethane resin (Tongde Chemical).

[0074] The polyether-grafted polysiloxane containing two terminal hydroxyl groups is a reactive silicone slip agent Silicone-9350 (Baiyuan Chemical).

[0075] The film-forming agent is dipropylene glycol methyl ether.

[0076] The dispersant is 7155W vinyl resin type amide polymer dispersant (Siloke).

[0077] The...

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PUM

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Abstract

The invention discloses a two-component water-based polyurethane scratch-resistant and wear-resistant PVC coating and a method thereof, comprising a main agent and a water-based isocyanate curing agent; the main agent comprises: water-based polyurethane resin, polyether grafting containing two terminal hydroxyl groups Polysiloxane, film former, dispersant, auxiliary agent, cosolvent. The two-component water-based polyurethane anti-scratch and wear-resistant PVC coating of the present invention and the preparation method thereof, the coating has good hardness, adhesion, wear resistance and no sticking back; Ether-grafted polysiloxane (Silicone‑9350, silicone slip agent), wherein the structure of the polyether-grafted polysiloxane contains hydroxyl groups. After mixing evenly, it will react with the water-based isocyanate curing agent component to form a network The siloxane structure is introduced into the coating structure, which makes the polyether-grafted polysiloxane evenly distributed in the coating, which significantly improves the scratch resistance, anti-blocking, anti-graffiti and wear resistance of the coating. performance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a two-component water-based polyurethane scratch-resistant and wear-resistant PVC coating and a preparation method thereof. Background technique [0002] As the country's environmental protection requirements become more and more stringent, the decoration industry and the furniture industry as a whole are transforming towards water-based and solvent-free. The traditional painting process in the decoration industry and the furniture industry is cumbersome, requiring multiple grindings after painting or painting, and it is difficult to guarantee the clarity of graphic textures. Therefore, the market has introduced a paint-free film, which can replace the traditional coating and spraying process, and can be directly attached to the substrate through the blister process. The surface of the paint-free film has no color difference, has a natural texture, fine texture, uniform structu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D7/65C09D7/20
CPCC09D175/04C09D7/65C09D7/20C08L2205/03C08L2205/025C08L83/12C08L75/04
Inventor 周国豪罗铭荣周建明陆佩仪
Owner FOSHAN JINGXIN HUIMING TECH CO LTD