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A kind of thin coating type (meth)acrylate waterproof coating and its preparation method and application

An acrylate and waterproof coating technology, applied in the coating field, can solve the problems of high dosage of waterproof coating, increase in cost, decrease in tensile strength and elongation at break of coating film, etc. Integrity effect

Active Publication Date: 2020-05-12
深圳正浩高新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, for the acrylic waterproof coatings currently on the market, the thickness of a single film must be 1mm or more to meet the performance requirements of the film. If it is less than 1mm, the monomers in the waterproof coating are easy to volatilize, and the monomers volatilize too much, and the coating film will be damaged. There are many defects in the film, the tensile strength and elongation at break of the coating film are significantly reduced, which cannot meet the performance requirements of film formation, and due to the film formation defects, the waterproof coating layer is easy to crack, peel off, etc.
When the thickness of the film is high, on the one hand, the amount of waterproof coating will increase, and the cost will increase; on the other hand, the film will be uneven and there will be many performance defects

Method used

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  • A kind of thin coating type (meth)acrylate waterproof coating and its preparation method and application
  • A kind of thin coating type (meth)acrylate waterproof coating and its preparation method and application
  • A kind of thin coating type (meth)acrylate waterproof coating and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] The polyurethane acrylic acid active resin described in the present embodiment adopts the following steps to prepare:

[0092] Get the following raw materials in parts by weight:

[0093] 25 parts of 4,4'-dicyclohexylmethane and isocyanate, 50 parts of polycarbonate diol (manufacturer: Jiangsu Chemical Research Institute Co., Ltd., model: JSH10), polyaspartic acid ester resin (manufacturer: Zhuhai Feiyang New Materials Co., Ltd., model: F420) 20 parts, methyl methacrylate 50 parts, hydroxyethyl acrylate 2 parts, dibutyltin dilaurate 0.01 part.

[0094] The specific preparation method is:

[0095] (1) Pretreatment of polycarbonate diol dehydration: Add the above polycarbonate diol into the reactor, heat up to 110-120°C, vacuumize and dehydrate for 30 minutes, then cool the material to 80-85°C ℃; Among them, vacuumize and depressurize to -0.05-0.09MPa;

[0096] (2) Add 4,4'-dicyclohexylmethane and isocyanate and methyl methacrylate to the dehydration pretreated polycar...

Embodiment 2

[0100] The polyurethane acrylic acid active resin described in the present embodiment adopts the following steps to prepare:

[0101] Get the following raw materials in parts by weight:

[0102] 18 parts of 4,4'-dicyclohexylmethane and isocyanate, 30 parts of polycarbonate diol (manufacturer: Jiangsu Chemical Research Institute Co., Ltd., model: JSH10), polyaspartic acid ester resin (manufacturer: Zhuhai Feiyang New Materials Co., Ltd., model: F420) 18 parts, methyl methacrylate 30 parts, hydroxyethyl acrylate 1.3 parts, dibutyltin dilaurate 0.01 parts.

[0103] The specific preparation method is:

[0104] (1) Pretreatment of polycarbonate diol dehydration: Add the above polycarbonate diol into the reactor, heat up to 110-120°C, vacuumize and dehydrate for 30 minutes, then cool the material to 80-85°C ℃; Among them, vacuumize and depressurize to -0.05-0.09MPa;

[0105] (2) Add 4,4'-dicyclohexylmethane and isocyanate and methyl methacrylate to the dehydration pretreated poly...

Embodiment 3

[0109] The polyurethane acrylic acid active resin described in the present embodiment adopts the following steps to prepare:

[0110] Get the following raw materials in parts by weight:

[0111] 15 parts of 4,4'-dicyclohexylmethane and isocyanate, 25 parts of polycarbonate diol (manufacturer: Jiangsu Chemical Research Institute Co., Ltd., model: JSH10), polyaspartic acid ester resin (manufacturer: Zhuhai Feiyang New Materials Co., Ltd., model: F420) 12.5 parts, methyl methacrylate 20 parts, hydroxyethyl acrylate 2.2 parts, dibutyltin dilaurate 0.01 part.

[0112] The specific preparation method is:

[0113] (1) Pretreatment of polycarbonate diol dehydration: Add the above polycarbonate diol into the reactor, heat up to 110-120°C, vacuumize and dehydrate for 30 minutes, then cool the material to 80-85°C ℃; Among them, vacuumize and depressurize to -0.05-0.09MPa;

[0114] (2) Add 4,4'-dicyclohexylmethane and isocyanate and methyl methacrylate to the dehydration pretreated pol...

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Abstract

The invention relates to the technical field of coating, in particular to thin-coating type (methyl) acrylic ester waterproof coating as well as a preparation method and application thereof. The thin-coating type (methyl) acrylic ester waterproof coating comprises a component A and a component B, wherein the component A is mainly prepared from 40 to 100 parts by weight of polyurethane acrylic acidactive resin and 40 to 150 parts by weight of (methyl) acrylic ester monomer; the polyurethane acrylic acid active resin is mainly prepared by performing a reaction of the following raw materials inparts by weight: 15 to 30 parts of diisocyanate, 25 to 60 parts of polycarbonate diol, 10 to 30 parts of polyaspartic acid ester, 20 to 60 parts of (methyl) acrylic ester and 1 to 5 parts of hydroxyl-containing acrylic acid monomer; the component B comprises a curing agent. The waterproof coating has excellent self-film-forming property; a thin-coating film of less than 0.5 mm has excellent mechanical strength, high ageing resistance and high corrosion resistance and can be widely applied to various waterproof protection projects.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a thin-coated (meth)acrylate waterproof coating and a preparation method and application thereof. Background technique [0002] Waterproof coatings are commonly used building materials in the construction field. After curing, the waterproof coating forms a waterproof film, which has certain extensibility, elastic-plasticity, crack resistance, impermeability and weather resistance, and can play a certain role in waterproof, anti-seepage and protection. [0003] At present, commonly used waterproof coatings include acrylic coatings, which have the advantages of light color, color retention, gloss retention, weather resistance, and corrosion resistance, and are widely used in various industries. [0004] However, for the acrylic waterproof coatings currently on the market, the thickness of a single film must be 1mm or more to meet the performance requirements of the film. If it is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14C09D7/61C09D7/63C09D7/48C08G18/67C08G18/44
CPCC08G18/44C08G18/672C08K2003/2241C08K2003/3045C09D7/48C09D7/61C09D7/63C09D175/14C08K5/18C08K3/30C08K3/22C08K3/36C08K5/3475C08G18/40
Inventor 刘演新李艳
Owner 深圳正浩高新材料技术有限公司