Preparation technique of catalysis type composite curing agent in composite wear-resistant coating material

A composite curing agent and wear-resistant coating technology, applied in coatings, epoxy resin coatings, etc., can solve the problems of incomplete curing of composite materials, high toxicity in the construction environment, low cross-linking density, etc. Excellent wear resistance and good adhesion

Inactive Publication Date: 2011-05-04
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing composite wear-resistant coating materials have good wear resistance, but they are highly targeted, narrow in scope of application, and expensive, which cannot meet the needs of the domestic market and be accepted by domestic users
The existing composite wear-resistant coating materials developed in China have been applied in some occasions, but due to the limitations of the raw materials used and the production process, curing agents such as m-phenylenediamine are generally used. The composite material itself cannot be fully cured in a short period of time, the construction environment is highly toxic, the crosslinking density is low, the bonding performance with the spare parts matrix, and the wear resistance are poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The invention discloses a preparation process suitable for a catalytic composite curing agent in a composite wear-resistant coating material. The catalytic composite curing agent includes an amine catalytic composite curing agent, and the amine catalytic composite curing agent is specifically prepared The method is: first select aromatic polyamines, 2-ethyl-4-methylimidazole, resorcinol, salicylic acid and 2,4,6-tris(dimethylaminomethyl)phenol for standby, and then use aromatic Polymerization modification treatment of polyamines, finally the aromatic polyamines modified by addition polymerization accounted for 65-85%, 2-ethyl-4-methylimidazole accounted for 5-15%, and resorcinol accounted for 5%. ~15%, salicylic acid accounts for 0~5%, and 2,4,6-tris(dimethylaminomethyl)phenol accounts for 0~5%, select at least three of them for compatibility, and mechanically stir and mix evenly according to the mass percentage , forming an amine-catalyzed composite curing agent. The ...

Embodiment 2

[0020] As another preferred embodiment of the present invention, the catalytic composite curing agent also includes an acid anhydride catalytic composite curing agent, and the specific preparation method of the acid anhydride catalytic composite curing agent is: select an organic mixed anhydride and benzyl dimethylamine The organic mixed acid anhydride accounts for 95-99% and the benzyl dimethylamine accounts for 1-5%, and mechanically stirs and mixes uniformly according to the mass percentage to form an acid anhydride catalytic type composite curing agent.

Embodiment 3

[0022] On the basis of Example 2, another preferred embodiment of the present invention, wherein the organic mixed acid anhydride accounts for 30-55% of phthalic anhydride, 20-30% of hexahydrophthalic anhydride, formic Methyl tetrahydrophthalic anhydride accounts for 15-35%, and methyl hexahydrophthalic anhydride accounts for 0-20%. At least three of the above-mentioned raw materials are mixed each time, and mechanically stirred and mixed according to the mass percentage to form uniformly.

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PUM

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Abstract

The invention discloses a process for preparing a catalytic type composite curing agent suitable to be used in a composite wear-resistant coating material. The preparation process comprises the following steps: firstly, glycidyl ether is used to carry out polyaddition modification treatment of aromatic polyamine; then, at least three of 65 to 85 percent of the aromatic polyamine treated by polyaddition modification, 5 to 15 percent of 2-ethyl-4-methylimidazole, 5 to 15 percent of resorcin, 0 to 5 percent of salicylic acid and 0 to 5 percent of 2, 4, 6-tri (dimethylamino methyl) sphenol are selected to carry out compatibility, and are mechanically stirred to be mixed evenly by mass percentage, thereby forming the amine catalytic type composite curing agent. The catalytic type composite curing agent prepared by the process realizes complete curing of a composite material at a lower temperature and within shorter time so as to obtain higher crosslinking density and effectively reduce material internal stress.

Description

technical field [0001] The invention relates to the technical field of the preparation process of a catalytic composite curing agent in a series of composite wear-resistant coating materials for equipment repair. The composite wear-resistant coating material can be used for equipment and spare parts that resist erosion and wear caused by the mixing of solid particles and fluids It has excellent wear resistance and anti-corrosion performance, and can be used in mining, mineral processing, metallurgy, chemical industry, water conservancy, electric power, petroleum, coal and other industries. Background technique [0002] In mining, mineral processing, metallurgy, chemical industry, water conservancy, electric power, petroleum, coal and other industrial production, the abrasive particles produced by liquid and gas entraining solid particles have serious erosion and wear on equipment. Equipment and spare parts that are prone to wear and tear mainly include slurry pumps, mud pump...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/12C09D163/00C09D5/00
Inventor 刘厚明刘亚川廖祥文陈晓青杨进忠李红玲熊文良
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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