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Preparation method of heavy corrosion protection primer resin

A heavy-duty anti-corrosion primer and resin technology, applied in the field of coatings, can solve the problems of reduced bonding force between the coating film and the substrate, coating damage, anti-corrosion performance, poor toughness, etc., and achieve excellent medium resistance and anti-corrosion performance. Medium resistance and corrosion resistance, excellent effect of corrosion resistance

Active Publication Date: 2017-05-10
中昊北方涂料工业研究设计院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after increasing the crosslinking density, the rigidity of the film-forming material is relatively high, and the toughness is relatively poor, and the coating film is relatively brittle macroscopically.
As the internal stress of the coating film increases, the bonding force between the coating film and the substrate decreases, resulting in damage to the coating and a decrease in corrosion resistance

Method used

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  • Preparation method of heavy corrosion protection primer resin
  • Preparation method of heavy corrosion protection primer resin
  • Preparation method of heavy corrosion protection primer resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Add 62g of EPN-1179, 8g of n-butyl acetate, and 12g of cyclohexanone into the reaction flask, raise the temperature to 95°C under the protection of nitrogen, and start to drop the mixture of 5.7g of γ-aminopropyltriethoxysilane and 18g of xylene, After 2 hours of dropwise addition, heat preservation was carried out for 3 hours, the temperature was lowered, and the material was discharged for subsequent use to obtain modified resin A (silane-modified novolac epoxy resin).

[0036] Add 92g of E-20, 23g of coconut oleic acid, 10g of xylene and 60g of cyclohexanone into another reaction flask, raise the temperature to 160°C under the protection of nitrogen, keep the temperature for 10 hours, cool down, discharge the material for later use, and obtain a modified resin B (ring-opening epoxy resin).

[0037] Add 52g of modified resin A, 26g of modified resin B, 8.2g of γ-(2,3-epoxypropoxy)propyltrimethoxysilane, 15.5g of polypropylene glycol diglycidyl ether and 41g of methyli...

Embodiment 2

[0039] Add 35g EPN-1179, 28g EPN-1138, 14g n-butyl acetate, 20g cyclohexanone into the reaction flask, raise the temperature to 95°C under the protection of nitrogen, and start to drop 10.6g N-phenyl-α-aminomethyl The mixture of triethoxysilane and 12g of xylene was added dropwise for 2 hours and then kept for 3 hours, cooled and discharged for later use to obtain modified resin A (silane-modified novolac epoxy resin).

[0040] Add 122g of E-12, 18g of soy oil, 30g of xylene and 50g of cyclohexanone into another reaction flask, raise the temperature to 155°C under the protection of nitrogen, keep it warm for 10 hours, cool down, discharge the material for later use, and obtain modified resin B (ring-opening epoxy resin).

[0041] Add 47g of modified resin A, 32g of modified resin B, 5g of dodecafluoroheptylpropyltrimethoxysilane, 4g of γ-mercaptopropyltrimethoxysilane, and 12g of 1,6-hexanediol diglycidyl into the packaging barrel Ether and 48g n-pentyl acetate, obtain the he...

Embodiment 3

[0043] Add 70g of GY-289, 9g of n-butyl acetate, and 18g of cyclohexanone into the reaction flask, raise the temperature to 95°C under the protection of nitrogen, and start to drop 3.3g of γ-aminopropyltriethoxysilane, 2.9g of N-β -(Aminoethyl)-γ-aminopropylmethyldimethoxysilane and 22g xylene mixture, after 2 hours of dropwise addition, keep warm for 3 hours, cool down, discharge for later use, and obtain modified resin A (silane modified novolac epoxy resin).

[0044] Add 64gE-12, 33gE-20, 21g soy oil, 17g xylene and 55g cyclohexanone to another reaction flask, raise the temperature to 160°C under the protection of nitrogen, keep it warm for 10 hours, cool down, discharge the material for later use, and obtain Modified resin B (ring-opening epoxy resin).

[0045]Add 60g of modified resin A, 33g of modified resin B, 12.1g of γ-(2,3-epoxypropoxy)propyltrimethoxysilane, 6.3g of polypropylene glycol diglycidyl ether, 6.7g of phenyl Glycidyl ether and 42g pimelinketone were mec...

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Abstract

The invention relates to the field of coatings, in particular to a preparation method of heavy corrosion protection primer resin. The purpose of the preparation method is that silane-modified novolac epoxy resin is prepared, so that the crosslinking density of the epoxy resin is increased; furthermore, a silicon oxygen bond (-Si-O) can be formed by reaction between siloxane in the resin and hydroxyl on the surface of the base material, so that the adhesion force of a coating film to a base material is enhanced through combination of the silicon oxygen bond and a chemical bond formed by the base material; moreover, the epoxy resin is toughened in way of opening the epoxy resin through oleic acid, so as to balance the toughness of the coating film at high crosslinking density and form a micro-phase separation structure of 'soft section' and 'hard section', and the internal stress in a film forming process is eliminated. The preparation method has the purpose that the silane-modified novolac epoxy resin and open-ring epoxy resin are synthesized through molecularly structural design, and a heavy corrosion protection primer resin system is prepared through cooperation of the two types of modified epoxy resin.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a preparation method of a heavy-duty anti-corrosion primer resin. Background technique [0002] In recent years, with the vigorous development of my country's offshore oil engineering industry, the corrosion protection of bridges, docks, port facilities, containers, oil and gas storage tanks, drilling platforms, etc. has become a top priority. At present, the supporting anti-corrosion coating system is often used for long-term anti-corrosion protection of concrete and steel structures. Epoxy resin is widely used in the design of various anti-corrosion protective coating systems because of its excellent corrosion resistance. [0003] The marine atmospheric environment has the characteristics of high salt content and high humidity, and equipment and facilities will also be washed by wind, rain and waves during use. Therefore, epoxy coatings in marine environments should have more excellen...

Claims

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Application Information

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IPC IPC(8): C09D163/04C09D163/00C09D5/08C09D7/12
CPCC08L2205/02C08L2312/00C09D5/08C09D7/63C09D163/04C08L63/00C08K5/5435C08K5/548C08K5/5419
Inventor 张剑飞王进忠杨旭刘洪伟董春雷李斌范永宁张全伟张亮亮
Owner 中昊北方涂料工业研究设计院有限公司
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