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Powder coating for improving wear resistance and wear reduction of surface of aluminum profile

A technology of powder coatings and aluminum profiles, applied in powder coatings, devices for coating liquid on the surface, fireproof coatings, etc. The effect of short action time and other problems, to overcome poor application performance, excellent outdoor stability, to solve the effect of poor erosion and wear resistance

Inactive Publication Date: 2020-10-13
ANHUI SHUNBANG FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The phenomenon of erosion and wear has widely existed in our life and industrial production, and it is also one of the important reasons that mainly cause damage to materials and affect the performance of products and equipment. Therefore, for the physical and chemical properties of aluminum profiles, it is necessary to The surface is sprayed with a layer of protective coating. The existing protective coating is used for aluminum profiles. Under the action of external force, it is still prone to erosion and wear, easy to peel off, and the protective effect takes a short time. Under high temperature, it will even disappear immediately. Damaged, unable to protect the coating, and unable to adapt to the work requirements of erosion and wear resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A powder coating for improving the wear resistance and friction reduction of the surface of an aluminum profile. The epoxy resin is used as a base material for processing and modification. The preparation method specifically includes the following steps:

[0019] Step 1: Put the epoxy resin in a four-necked flask equipped with a stirrer, a condenser, and a thermometer, and add 14.0% of epoxy chlorohydrin and 3.4% of 1,4-dimethylolcyclo Hexane and 7.0% tetramethylammonium chloride are heated to 57°C under stirring at 270 rpm, and nitrogen gas is added through the dropping funnel to add a sodium hydroxide solution with a molar concentration of 7.6 mol / liter to adjust the pH of the system value between 11.2-11.6, continue to heat up to 77°C, stir for 1 hour, turn off the nitrogen, and keep warm for 2 hours. After the reaction, the product is placed in a rotary evaporator to recover the residual solvent under reduced pressure, washed 3 times with distilled water, and then P...

Embodiment 2

[0031] A powder coating for improving the wear resistance and friction reduction of the surface of an aluminum profile. The epoxy resin is used as a base material for processing and modification. The preparation method specifically includes the following steps:

[0032] Step 1: Put the epoxy resin in a four-necked flask equipped with a stirrer, a condenser, and a thermometer, and add 14.3% of epoxy chlorohydrin and 3.5% of 1,4-dimethylolcyclo Hexane and 7.2% tetramethylammonium chloride are heated to 57.5°C under stirring at 280 rpm, and nitrogen gas is added through the dropping funnel to add a sodium hydroxide solution with a molar concentration of 7.7 mol / liter to adjust the pH of the system When the value is between 11.2-11.6, continue to heat up to 77.5°C, stir and react for 1.5 hours, turn off nitrogen, and keep warm for 2.5 hours. After the reaction, the product is placed in a rotary evaporator to recover the residual solvent under reduced pressure, washed 4 times with d...

Embodiment 3

[0044] A powder coating for improving the wear resistance and friction reduction of the surface of an aluminum profile. The epoxy resin is used as a base material for processing and modification. The preparation method specifically includes the following steps:

[0045] Step 1: Put the epoxy resin in a four-necked flask equipped with a stirrer, a condenser, and a thermometer, and add 14.7% of epoxy chlorohydrin and 3.8% of 1,4-dimethylolcyclo Hexane and 7.5% tetramethylammonium chloride are heated to 58°C under stirring at 300 rpm, and nitrogen gas is added through the dropping funnel to add a sodium hydroxide solution with a molar concentration of 7.9 mol / liter to adjust the pH of the system When the value is between 11.2-11.6, continue to heat up to 78°C, stir for 2 hours, turn off the nitrogen, and keep warm for 3 hours. After the reaction, the product is placed in a rotary evaporator to recover the residual solvent under reduced pressure, washed with distilled water for 5 t...

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Abstract

The invention relates to a powder coating for improving wear resistance and wear reduction of the surface of an aluminum profile. According to the invention, modified epoxy resin prepared by introducing polyfunctional groups into epoxy resin improves heat resistance and corrosion resistance and shortens curing time; melt extrusion is performed in order to further make up the defects of insufficient adhesive force and no wear resistance; an anti-scratching agent is added, so binding force to the aluminum profile is strong, and protective performance cannot be gradually reduced along with the prolonging of the service time of the coating. The powder coating prepared by the invention is applied to the surface of the aluminum profile, and has good associativity; and when the surface of the aluminum profile is coated with the powder coating, the powder coating shows excellent adhesion capability, has high mechanical strength, good weather resistance, chemical resistance, scratch resistanceand scuff resistance, cannot be damaged and lose efficacy, presents very strong wear resistance and reduction performance and high chemical corrosion resistance, plays an excellent protection role invarious complex environments, can bear erosive wear of gas, solid and liquid, has excellent outdoor stability, and prolongs the service life of the aluminum profile.

Description

technical field [0001] The invention relates to the technical field of paint preparation, in particular to a powder paint for improving the wear resistance of the surface of an aluminum profile. Background technique [0002] Aluminum and its aluminum alloys, because of their good physical and chemical properties, as well as the stable, continuous and rapid development of my country's national economy and high-tech, have promoted the rapid development of my country's aluminum smelting and aluminum profile processing industries. [0003] Compared with iron, aluminum profiles have better corrosion resistance. However, the texture is soft and easy to wear, and it will be eroded by liquid flow and sediment, which will accelerate wear and corrosion. The phenomenon of erosion and wear has widely existed in our life and industrial production, and it is also one of the important reasons that mainly cause damage to materials and affect the performance of products and equipment. There...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/03C09D7/65C09D7/61C09D7/63C08G59/14B05D7/16
CPCB05D7/16B05D2202/25C08G59/1444C08K2003/2206C08K2003/2227C08K2003/2241C08K2201/014C08L2201/08C09D5/033C09D5/18C09D163/00C08L83/04C08K13/02C08K3/34C08K3/22C08K3/346C08K5/098C08K3/36C08K3/04
Inventor 苗雪峰
Owner ANHUI SHUNBANG FINE CHEM
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