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Method for improving adhesion property and prolonging service life of acrylic coating

An acrylic and adhesive technology, applied in coatings and other directions, can solve the problems of affecting the mechanical properties of products, loss of safety glass, degumming, etc. The effect of weather resistance and hydrophobicity

Active Publication Date: 2014-07-02
MIANYANG WELLS ELECTRONICS MATERIAIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] GB / T15763.3-2009 "Safety Glass for Buildings Part 3: Laminated Glass" stipulates that because the intermediate bonding layer of laminated glass can be an ionic intermediate layer, PVB (polyvinyl butyral) or EVA (ethylene-acetic acid Ethylene copolymer), etc., these thermoplastic polymer molecules have hydrophilic chain links, water molecules can penetrate into the middle layer through the exposed film at the edge of the laminated glass, bubbles appear, degumming and gradually expand to the inside, resulting in bonding failure
This phenomenon will affect the mechanical properties of the product. Existing studies have shown that for laminated glass with a moisture content of PVB film exceeding 5‰, the glass will be broken and peeled off from the middle layer under the impact of falling ball impact test and shotgun impact, losing the proper function of safety glass. ; In addition, the insulation of the intermediate layer will also decrease with the increase of moisture content

Method used

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  • Method for improving adhesion property and prolonging service life of acrylic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Curing conditions: coated on glass, plastic and other substrates, cured at 25°C for 7 days, the same as the following examples.

[0037] The organic titanium compound used in this embodiment is isopropyl titanate, which can also be used in butyl titanate, polybutyl titanate, tetraisooctyl titanate, tetraethoxytitanium, and n-propyl titanate. One or more mixtures are substituted. A mixture of isopropyl titanate and the above-mentioned substances can also be used instead of isopropyl titanate in this embodiment. The amount of the organic titanium compound is 0.05-3% of the mass of the final acrylic paint. The content of organic titanium compound in this embodiment is 3%.

[0038] The tackifier 1# used in this example belongs to tetracyclic methylhydrogen cyclosiloxane containing 1 Si-H and 3 trimethoxy groups. The organosilicon tackifier in this embodiment can also adopt tetracyclome methylcyclosiloxane, pentacyclome methylcyclosiloxane, pentacyclome methylhydro...

Embodiment 2

[0041] components

[0042] In this embodiment, butyl titanate is used as an organic titanium compound to be added to the raw material of acrylic paint, and tackifier 2# is used. The tackifier 2# belongs to a tetracyclic ring containing 3 Si-H and 1 trimethoxy Bulk methylhydrocyclosiloxane and methyltriethoxysilane were used as water remover. The organotitanium compound, tackifier and water remover can also be replaced by the same substances listed in Example 1, and the following examples are also available. The dosage of each substance in this embodiment is shown in the table of this embodiment.

Embodiment 3

[0044] components

[0045] polybutyl titanate

[0046] The organotitanium compound, tackifier and water remover used in this embodiment are shown in the table, wherein tackifier 3# belongs to tetracyclic methylhydrogen cyclosiloxane containing 3 Si-H and 1 epoxy group .

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Abstract

The invention discloses a method for improving the adhesion property and prolonging service life of acrylic coating. The method comprises the steps of: adding organic titanium compound into the acrylic coating, wherein the organic titanium compound content is 0.05-3% of the weight of the acrylic coating; adding organosilicon tackifier which has Si-H, Si-CH3 obtained through substituting -H by CH3, or Si-C2H5 obtained through substituting -H by -C2H5, epoxy group or alkoxy group in the molecular structure, wherein the organosilicon tackifier content is 0.05-5% of the weight of the acrylic coating; adding a water removing agent into the acrylic coating, wherein the water removing agent content is 0.1-5% of weight of the acrylic coating. The method has the advantages that the performances of normal adhesion, wet-heat adhesion and adhesion after high / low-temperature impact of the acrylic coating to glass, plastic, metal and other substrates are improved, and meanwhile, the weather ability and hydrophobicity of the coating are also improved, the moisture transmittance of the coating is reduced, and the service life of the coating is prolonged.

Description

technical field [0001] The invention belongs to the field of formula design of acrylic paint for adhesive coating, and in particular relates to a method for improving the bonding performance of acrylic paint to substrates such as glass, plastic, metal and ceramics, and improving the service life. Background technique [0002] As a common chemical, acrylic paint is widely used in people's daily life, including construction, machinery and electronics industries, due to its strong decorative properties, convenient construction, good bonding and sealing effect and anti-corrosion performance. [0003] Adhesion of acrylic coatings to substrates has been an important consideration for a long time. As people's requirements for coating performance become higher and higher, the requirements for adhesion and wet heat bonding are becoming more and more stringent. Ordinary unmodified acrylic coatings have some defects in the wet heat and high and low temperature bonding of substrates suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D133/00
Inventor 周鸿飞刘良军陆南平
Owner MIANYANG WELLS ELECTRONICS MATERIAIS
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