Zinc oxide coated CBN (cubic boron nitride) grinding material resin grinding wheel and preparation method of zinc oxide coated CBN grinding material resin grinding wheel

A technology of resin grinding wheel and zinc oxide, applied in the field of grinding wheel, can solve the problems of high brittleness of pure phenolic resin, affecting the performance of friction material, insufficient heat resistance, etc. Effect

Inactive Publication Date: 2016-02-03
薛典荣
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  • Abstract
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Problems solved by technology

However, pure phenolic resin has defects such as high brittleness, poor toughness, high hardness, insufficient heat resistance, low strength, and high noise during use, which greatly affect the performance of friction materials. Therefore, modifying phenolic resin is to improve its comprehensive performance. effective method

Method used

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Embodiment Construction

[0022] A kind of zinc oxide coated CBN abrasive resin grinding wheel, it is made up of the raw material of following weight portion:

[0023] Zinc nitrate 15, urea 140, sodium lauryl sulfate 0.15, phenol 90, 35% formaldehyde solution 96, boric acid 5, hexamethylenetetramine 2, aniline 13, barium stearate 10, cubic boron nitride 570, polyvinyl alcohol3.

[0024] A kind of preparation method of described CBN abrasive resin grinding wheel, comprises the following steps:

[0025] (1) Mix the above-mentioned zinc nitrate, urea, and sodium lauryl sulfate, add it to 5 times of water, stir evenly, add 20% of the weight of the above-mentioned cubic boron nitride, stir magnetically for 26 minutes, heat to 80°C, and keep stirring 120 minutes, filtered, washed the filter residue with water, dried, calcined at 400°C for 1.6 hours, cooled to obtain zinc oxide-coated boron nitride micropowder;

[0026] (2) Mix 68% of the weight of the above phenol and 70% of the weight of the 35% formaldeh...

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Abstract

The invention discloses a zinc oxide coated CBN (cubic boron nitride) grinding material resin grinding wheel, which is prepared from the following ingredients in parts by weight: 15 to 20 parts of zinc nitrate, 140 to 200 parts of urea, 0.15 to 0.2 parts of sodium dodecyl sulfate, 90 to 100 parts of phenol, 96 to 110 parts of 35-40-percent formaldehyde solution, 5 to 7 parts of boric acid, 2 to 6 parts of hexamethylenetetramine, 13 to 20 parts of aniline, 10 to 20 parts of barium stearate, 570 to 600 parts of elboron and 3 to 4 parts of polyvinyl alcohol. The zinc oxide protective barrier coating has the advantages that the heat resistance of the boron nitride can be obviously improved; the main reason is that the zinc oxide coating blocks the contact of boron nitride and oxygen gas, and controls the high-temperature oxidization of the boron nitride; meanwhile, the zinc oxide cannot generate the corrosion effect on the boron nitride.

Description

technical field [0001] The invention relates to the technical field of grinding wheels, in particular to a zinc oxide-coated CBN abrasive resin grinding wheel and a preparation method thereof. Background technique [0002] With the continuous improvement of the speed of automobiles and airplanes, the requirements for friction materials such as transmission and braking are more stringent, and the matrix, as an important part of friction materials, has always been the focus of development and research. Phenolic resin, epoxy resin, styrene-butadiene rubber and polytetrafluoroethylene can be used as the matrix of friction materials, but epoxy resin, styrene-butadiene rubber and polytetrafluoroethylene have poor wear resistance, heat resistance and Adhesive properties limit its application in friction materials. The advantages of phenolic resin in heat resistance, bonding performance, mechanical properties, molding performance and cost make it the most commonly used binder matri...

Claims

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Application Information

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IPC IPC(8): C08G8/28B24D3/28B24D3/34
Inventor 薛典荣
Owner 薛典荣
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