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Method for preparing silicone-acrylate dope

A coating and silicon-acrylic technology, which is applied in the field of preparation of new high-energy silicon-acrylic coatings, can solve the problems of impossible wear resistance, cannot meet the use requirements of high wear resistance, etc., and achieves improved basic performance and good adhesion of coatings. , the effect of simple preparation process

Inactive Publication Date: 2008-08-06
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, acrylic coatings, from the perspective of their chemical composition, cannot have good wear resistance and cannot meet the requirements of high wear resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In a four-neck flask, add 100ml of toluene, heat and stir until reflux; weigh 75g of methyl methacrylate, 20g of n-butyl methacrylate, and 5g of glycidyl methacrylate to make a mixed monomer, and then add 1g of peroxide Benzoyl, stir to dissolve, mix evenly, add dropwise into the four-necked flask at a rate of 0.5h / 50g, and finish dropping in 1h; after dropping, keep it under reflux for 2h, stop the reaction, and obtain acrylic resin. When using it, mix it according to the curing agent ethylenediamine:resin ratio of 1:25, stir evenly, dilute it, and then spray it. After the coating film was baked at 60°C for 12 hours, the wear resistance of the coating film was tested to be 50, which was 5 times higher than that of the acrylic ester coating before modification.

Embodiment 2

[0022] In a four-necked flask, add 100g of isobutanol, heat and stir until reflux; then weigh 90g of n-butyl methacrylate, 5g of glycidyl methacrylate, and 5g of glycidyl methacrylate to form a mixed monomer. Then add 0.1g of benzoyl peroxide, stir to dissolve, mix evenly, add dropwise into the four-necked flask at a rate of 1h / 50g, and finish dropping in 2h; after dropping, keep warm under reflux for 3h, stop the reaction, and obtain acrylic acid resin. When using, mix the curing agent ethylenediamine:resin at a ratio of 1:5, stir evenly, dilute, and then spray. The wear resistance of the coating film is shown in Table 1.

Embodiment 3

[0024] In a four-necked flask, add 100g of isobutanol, heat and stir until reflux; then weigh 90g of n-butyl methacrylate, 5g of glycidyl methacrylate, and 5g of glycidyl methacrylate to form a mixed monomer. Then add 10 g of benzoyl peroxide, stir to dissolve, mix evenly, and add it to the four-necked flask at one time; after dropping, keep it under reflux for 3 hours to stop the reaction to obtain an acrylic resin. When using, mix the curing agent ethylenediamine:resin at a ratio of 1:5, stir evenly, dilute, and then spray. The wear resistance of the coating film is shown in Table 1.

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PUM

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Abstract

A preparation process of silicon acrylic acid coating relates to a preparation process of coating, providing a preparation process of silicon acrylic acid coating which has high hardness and abrasion resistance, and can be used to on surface coating of plastic rubber and wood-ware. The preparation process comprises firstly adding toluene or isobutyl alcohol or the mixing solution of both into a reactor, and stirring and heating to reflux, secondly mixing acrylic esters monomer and acrylic ester monomer which comprises epoxy radical, then adding initiating agent whose weight is 0.1%-10% of the weight of monomer, stirring to dissolve and mix evenly, thirdly adding mixed monomer solution in the second step into the reactor in the way of one-time adding or dripping, keeping warm for 2-3h, and obtaining acrylic acid resin after stopping reaction, and fourthly mixing acrylic acid with curing agent, and evenly stirring to use.

Description

technical field [0001] The invention relates to a preparation method of a paint, in particular to a preparation method of a novel high-energy silicon-acrylic paint used for plastics and woodware. Background technique [0002] Due to the rapid development of the electronics industry in recent years and the increasing demand for home decoration conditions, the surface coatings used for these products are required to have various more superior physical properties. Therefore, the development of high-performance coatings that meet social requirements is the development of modern coatings. direction. The high performance of coatings includes high decoration, high corrosion resistance, super durability, high functionality and good construction performance. At present, the surface protection layer of electronic products basically adopts acrylic plastic paint, although its luster is bright, but its wear resistance is low. Due to insufficient wear resistance, the surface coating wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D133/14C08K5/541
Inventor 董炎明李燕杰胡晓兰
Owner XIAMEN UNIV