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Preparation process of novel high-hardness and high-flexibility composite polymer waterborne coating

A technology of composite polymer and water-based coatings, applied in coatings and other directions, can solve problems such as difficult to achieve 1H, poor solvent resistance, and reduced construction performance, and achieve better results, increase cross-linking density, and improve flexibility Effect

Inactive Publication Date: 2019-05-28
深圳市方润环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are mainly two kinds of materials used in plastic paint, metal paint and wood paint on the market, one is two-component hydroxyacrylic emulsion, and the other is water-based polyurethane dispersion; the hardness of two-component hydroxyacrylic emulsion can reach More than 1H, but poor flexibility and poor weather resistance. It has the characteristics of hot stickiness and cold brittleness. It has poor weather resistance and is easy to crack when the temperature is lower than 10 degrees Celsius. , but on plastic paint, metal paint, wood paint and other substrates, the adhesion is not enough, the hardness is difficult to reach 1H, and the solvent resistance is also poor

Method used

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  • Preparation process of novel high-hardness and high-flexibility composite polymer waterborne coating

Examples

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Comparison scheme
Effect test

Embodiment 1

[0022] A preparation process for a novel high-hardness and high-flexibility composite macromolecule water-based coating, comprising composite material D, purified water, wetting agent, leveling agent, hand feeling agent, water-based curing agent and fumed silica, characterized in that: The following components are prepared in parts by weight: 68% of composite material D, 10% of pure water, 1.5% of wetting agent, 0.5% of leveling agent, 2% of hand feeling agent, 15% of water-based curing agent and 3% of fumed silicon dioxide.

[0023] Preferably, its preparation steps are as follows:

[0024] S1: Use methyl methacrylate, styrene and other monomers as solvents, heat to 85 degrees with IPDI / HMDI / TDI / TMI and DMPA, hydroxyethyl acrylate (HEA) / hydroxyethyl methacrylate (HEMA), Synthesize a kind of water-based polyurethane prepolymer A of double bond and NCO common termination;

[0025] S2: Heat the water-based polyurethane prepolymer A and excess polyol (PCL / PCDL / PTMEG / PPG, etc.) t...

Embodiment 2

[0034] A preparation process for a novel high-hardness and high-flexibility composite macromolecule water-based coating, comprising composite material D, purified water, wetting agent, leveling agent, hand feeling agent, water-based curing agent and fumed silica, characterized in that, by The following components are prepared by weight: 78% composite material D, 1% pure water, 1.5% wetting agent, 0.5% leveling agent, 2% hand feeling agent, 12% water-based curing agent and 5% fumed silica.

[0035] Preferably, its preparation steps are as follows:

[0036] S1: Use methyl methacrylate, styrene and other monomers as solvents, heat to 85 degrees with IPDI / HMDI / TDI / TMI and DMPA, hydroxyethyl acrylate (HEA) / hydroxyethyl methacrylate (HEMA), Synthesize a kind of water-based polyurethane prepolymer A of double bond and NCO common termination;

[0037]S2: Heat the water-based polyurethane prepolymer A and excess polyol (PCL / PCDL / PTMEG / PPG, etc.) to 95 degrees, and further polymerize t...

Embodiment 3

[0046] A preparation process for a novel high-hardness and high-flexibility composite polymer water-based coating, comprising composite material D, purified water, wetting agent, leveling agent, hand feeling agent, water-based curing agent and fumed silica, composed of the following parts by weight Components are prepared: 71% of composite material D, 5% of purified water, 1.5% of wetting agent, 0.5% of leveling agent, 2% of hand feeling agent, 10% of water-based curing agent and 2% of fumed silica.

[0047] Preferably, its preparation steps are as follows:

[0048] S1: Use methyl methacrylate, styrene and other monomers as solvents, heat to 85 degrees with IPDI / HMDI / TDI / TMI and DMPA, hydroxyethyl acrylate (HEA) / hydroxyethyl methacrylate (HEMA), Synthesize a kind of water-based polyurethane prepolymer A of double bond and NCO common termination;

[0049] S2: Heat the water-based polyurethane prepolymer A and excess polyol (PCL / PCDL / PTMEG / PPG, etc.) to 95 degrees, and further ...

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Abstract

The invention discloses a preparation process of a novel high-hardness and high-flexibility composite polymer waterborne coating, and the novel high-hardness and high-flexibility composite polymer waterborne coating is characterized by being prepared from the following components in percentage by weight: 60%-80% of a composite material D, 1%-10% of purified water, 1.5% of a wetting agent, 0.5% ofa levelling agent, 2% of a hand feeling agent, 10%-15% of a waterborne curing agent and 2%-5% of fumed silica. The preparation process combines the weather resistance of polyurethane with acrylic acid by chemical reaction cross-linking in the form of NCO and double-bond end-capping, thereby obtaining a polymer composite material with high hardness and excellent flexibility, and molecular weight and crosslink density are continuously expanded via a multi-step crosslinking reaction, thereby achieving the best toughness and hardness, so that the novel high-hardness and high-flexibility compositepolymer waterborne coating has high hardness and flexibility on base materials including plastics, metal, wood, etc., the properties of the novel high-hardness and high-flexibility composite polymerwaterborne coating are not obvious to temperature changes, and the advanges of excellent adhesion, solvent and weather resistance and easy construction are realized.

Description

technical field [0001] The invention belongs to the technical field of high-hardness and high-flexibility composite polymer water-based paint, in particular to a preparation process of a novel high-hardness and high-flexibility composite polymer water-based paint. Background technique [0002] At present, there are mainly two kinds of materials used in plastic paint, metal paint and wood paint on the market, one is two-component hydroxyacrylic emulsion, and the other is water-based polyurethane dispersion; the hardness of two-component hydroxyacrylic emulsion can reach More than 1H, but poor flexibility and poor weather resistance. It has the characteristics of hot stickiness and cold brittleness. It has poor weather resistance and is easy to crack when the temperature is lower than 10 degrees Celsius. , but on plastic paint, metal paint, wood paint and other substrates, the adhesion is not enough, the hardness is difficult to reach 1H, and the solvent resistance is also poo...

Claims

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Application Information

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IPC IPC(8): C09D151/08C09D7/61C08F283/00C08F220/58C08F220/28
Inventor 潘艺林史彦龙霍朝辉李飞虎
Owner 深圳市方润环境科技有限公司
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