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Adhesive for high-precision grinding belt

A technology of abrasive tapes and adhesives, applied in abrasives, metal processing equipment, manufacturing tools, etc., can solve the problems of no anti-adhesion, PCB board corrosion, and the adhesive does not have waterproof bonding effect, so as not to fall off, Improve water resistance and bonding performance, reasonable and effective internal stress release effect

Active Publication Date: 2016-05-25
南通市锋芒复合材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary adhesives do not have the effect of anti-adhesion. After the residue is adhered, grinding is easy to cause corrosion of the PCB board, and ordinary adhesives are not waterproof and have a good bonding effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This embodiment provides an adhesive for high-precision grinding belts, which is composed of 25% composition A and 75% composition B; composition A and composition B are water-based adhesives, composition A and composition B mixed with water The weight ratio is 40-55% respectively.

[0025] Composition A includes the following components by weight percentage: phenolic resin: 45%, filler: 35%, surfactant: 1%, diluent: 9%, defoamer: 0.5%, aqueous PUR dispersion: 9.5%.

[0026] Aqueous PUR dispersions are prepared as follows:

[0027] (1) Put the dried polyether polyol into a container, add toluene diisocyanate to the container and react at 68°C for 2.5 hours, then add N-methyl-2 dimethylolpropionic acid dissolved in the container dropwise -Pyrrolidone was reacted at 56°C for 2 hours to obtain a prepolymer;

[0028] (2) Add 0°C deionized water and triethylamine into another container and stir at high speed, inject the prepolymer prepared in step (1) into it, react for 1....

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PUM

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Abstract

The invention discloses an adhesive for high-precision grinding belts, which consists of composition A and composition B; composition A includes the following components by weight percentage: phenolic resin: 45-85%, filler: 10-35%, surface Active agent: 0.5-1%, diluent: 1-9%, defoamer: 0.5-0.8%, aqueous PUR dispersion: 5-10%, the sum of the above components is 100%; composition B by weight The percentage includes the following components: phenolic resin: 45-85%, high-efficiency leveling agent: 0.1-5%, antistatic agent: 0.1-5%, filler: 10-35%, coupling agent: 0.1-0.8%, inorganic Pigment: 1-5%, thinner: 0.1-10%, flame retardant: 0.5-0.8%, the sum of the above components is 100%. The adhesive has anti-adhesive properties, and has good waterproof and bonding properties.

Description

technical field [0001] The invention relates to an adhesive in the field of coated abrasives, in particular to an adhesive for high-precision grinding belts. Background technique [0002] The production process of PCB board includes the polishing process of the board, which mainly uses abrasive materials to grind the surface of the intermediate process, so as to facilitate the smoothness of the copper foil surface and the board surface, and facilitate subsequent operations. [0003] Since the PCB board is a material with high sensitivity requirements, each process in the manufacturing process is very strict; especially in the surface grinding stage, if the processed surface roughness is large, there will be subtle unevenness, which is likely to cause poor circuit printing. This will lead to open circuit and short circuit. At present, the types of adhesives used for coating abrasive tools mainly include animal glue, synthetic resin and paint. However, ordinary adhesives do ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D3/28C08G18/66C08G18/48C08G18/12
Inventor 王荣生
Owner 南通市锋芒复合材料科技有限公司
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