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Method for preparing waterborne epoxy resin for manufacturing polishing cloth and application of waterborne epoxy resin

A technology of water-based epoxy resin and manufacturing method, which is applied in the direction of manufacturing tools, metal processing equipment, abrasives, etc., can solve the problems of lower tear resistance of polishing cloth, reduce the grinding force of polishing cloth, and affect the quality of polishing cloth, etc., to achieve Excellent tear strength, improved moisture absorption, enhanced grinding force

Inactive Publication Date: 2017-12-12
WUXI PERMANENT IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the hygroscopicity of the phenolic resin due to the phenolic hydroxyl group in the phenolic resin, if there is no phenolic hydroxyl group, the adhesion of the phenolic hydroxyl resin will be greatly affected, and the presence of the phenolic hydroxyl group often makes the tear resistance of the polishing cloth Decrease, brittleness increases, and reduce the grinding force of the polishing cloth at the same time, which affects the quality of the polishing cloth

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Follow the steps below to make a polishing cloth:

[0030] 1) Dissolve 580 parts by weight of epoxy resin (epoxy value 0.48~0.54) in 580 parts by weight of acetone and ethanol mixed organic diluent, the weight ratio of acetone and ethanol is 1:5.5, recorded as Solution A;

[0031] 2) Dissolve 230 parts by weight of diethylenetriamine in 580 parts by weight of ethanol, and record it as solution B;

[0032] 3) Add solution A to solution B dropwise. The temperature of solution A and solution B is 40°C at the beginning of the dropwise addition. During the dropwise addition, control the rate of addition so that the reaction temperature is 40~50°C. After the dropwise addition, solution C is obtained. ;

[0033] 4) Cool solution C to 20°C, add 575 parts by weight of organic acid dropwise, and stir for 0.5 hours to obtain a transparent orange-yellow water-based epoxy polyamine resin;

[0034] 5) Carding the nylon fiber into a net to obtain the required non-woven fabric;

[...

Embodiment 2

[0038] Follow the steps below to make a polishing cloth:

[0039] 1) Dissolve 555 parts by weight of epoxy resin (epoxy value 0.48~0.54) in a mixed organic diluent of 555 parts by weight of acetone and ethanol, the weight ratio of acetone and ethanol is 1:5.5, recorded as Solution A;

[0040] 2) Dissolve 230 parts by weight of diethylenetriamine in 580 parts by weight of ethanol, and record it as solution B;

[0041] 3) Add solution A to solution B dropwise. The temperature of solution A and solution B is 40°C at the beginning of the dropwise addition. During the dropwise addition, control the rate of addition so that the reaction temperature is 40~50°C. After the dropwise addition, solution C is obtained. ;

[0042] 4) Cool solution C to 20°C, add 540 parts by weight of organic acid dropwise, and stir for 0.5 hours to obtain a transparent orange-yellow water-based epoxy polyamine resin;

[0043] 5) Carding the nylon fiber into a net to obtain the required non-woven fabric;...

Embodiment 3

[0047] Follow the steps below to make a polishing cloth:

[0048] 1) Dissolve 504 parts by weight of epoxy resin (epoxy value 0.48~0.54) in 580 parts by weight of acetone and ethanol mixed organic diluent, the weight ratio of acetone and ethanol is 1:5.5, recorded as Solution A;

[0049] 2) Dissolve 200 parts by weight of diethylenetriamine in 504 parts by weight of ethanol, and record it as solution B;

[0050]3) Add solution A to solution B dropwise. The temperature of solution A and solution B is 40°C at the beginning of the dropwise addition. During the dropwise addition, control the rate of addition so that the reaction temperature is 40~50°C. After the dropwise addition, solution C is obtained. ;

[0051] 4) Cool solution C to 20°C, add 470 parts by weight of organic acid dropwise, and stir for 0.5 hours to obtain a transparent orange-yellow water-based epoxy polyamine resin;

[0052] 5) Carding the nylon fiber into a net to obtain the required non-woven fabric;

[0...

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Abstract

The invention discloses a method for preparing waterborne epoxy resin for manufacturing polishing cloth. The method includes steps of S1, dissolving, by weight, 500-580 parts of epoxy resin in 500-580 parts of mixed organic diluents to obtain solution A; S2, dissolving, by weight, 200-230 parts of diethylenetriamine in 500-580 parts of organic solvents to obtain solution B; S3, dropwise adding the solution A into the solution B to obtain solution C when the solution A is completely dropwise added into the solution B; S4, cooling the solution C until the temperature of the solution C reaches 20 DEG C, dropwise adding, by weight, 470-575 parts of organic acid into the solution C and stirring the solution C and the organic acid for 0.5 hour to obtain the transparent orange waterborne epoxy polyamine resin for manufacturing the polishing cloth. The temperatures of the solution A and the solution B are 40 DEG C when the solution A starts to be dropwise added into the solution B, the dropwise adding speeds are controlled in dropwise adding procedures, and the reaction temperatures are 40-50 DEG C. The method has the advantages that the polishing cloth with phenolic resin can be toughened by the waterborne epoxy resin prepared by the aid of the method; the polishing cloth manufactured by the aid of the method is excellent in tearing and tensile strength, cutting force can be enhanced, and the moisture absorption can be obviously improved.

Description

technical field [0001] The invention relates to the technical field of polishing cloth manufacturing, in particular to a preparation method and application of a water-based epoxy resin used for manufacturing polishing cloth. Background technique [0002] Polishing cloths are basically phenolic resins that bond the nonwoven fibers to each other and hold the abrasive to the fibers. However, due to the hygroscopicity of the phenolic resin due to the phenolic hydroxyl group in the phenolic resin, if there is no phenolic hydroxyl group, the adhesion of the phenolic hydroxyl resin will be greatly affected, and the existence of the phenolic hydroxyl group often makes the tear resistance of the polishing cloth Decrease, brittleness increases, and reduce the grinding force of the polishing cloth at the same time, which affects the quality of the polishing cloth. [0003] Aiming at the problems in the related technologies, no effective solution has been proposed yet. Contents of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/16C08G59/14B24D11/00B24D3/28
CPCC08G59/1477B24D3/28B24D11/001C08G59/1455
Inventor 张晓峰
Owner WUXI PERMANENT IND
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