Wear-resistant sheet resin cutting blades and preparation method thereof
A cutting disc, resin technology, applied in grinding/polishing equipment, abrasives, grinding devices, etc., can solve the problems of poor wear resistance, cracks, and low service life of cutting discs, and achieve heat resistance and wear resistance. Enhanced, high elasticity and strength, the effect of improving the service life
Inactive Publication Date: 2021-01-15
惠州市新科磨具有限公司
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Problems solved by technology
[0005] The purpose of the present invention is to provide wear-resistant sheet resin cutting sheet and preparation method thereof, to solve the problem that in the prior art, resin cutting sheets are mostly prepared with phenolic resin as a binder, but phenolic resin cutting sheets have poor heat resistance during use , Poor wear resistance, prone to cracks, falling blocks, etc., resulting in the problem of low service life of cutting discs
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[0033] The preparation method of wear-resistant sheet resin cutting sheet comprises the following steps:
[0034] Step (1), the preparation of polyimide resin binder:
[0035] Polyimide resin prepared by polymerization of 4,4'-bis(4-aminophenoxymethyl)triphenylamine, 1,3-bis(3-aminophenoxy)benzene and pyromellitic dianhydride , as a binding agent, for standby, the specific preparation process is: take 1mmol of 4,4'-bis(4-aminophenoxymethyl)triphenylamine, 2.5mmol of 1,3-bis(3-aminophenoxy)benzene and Add 3.5mmol of pyromellitic dianhydride into the three-necked flask, add a magnetic stirrer, then measure 80ml of N-methylpyrrolidone and add it to the three-necked flask as a reaction solvent, then take 0.24mmol of isoquinoline and add it to the three-necked flask The bottle, as a catalyst, was heated to 200°C under the protection of nitrogen, kept at a constant temperature, and refluxed for 4 hours to obtain a polyimide resin;
[0036] Among them, the molar ratio of 4,4'-bis(4...
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The invention relates to wear-resistant sheet resin cutting blade and a preparation method thereof. Each wear-resistant sheet resin cutting blade comprises the following components of, in parts by mass, 61 parts of abrasive, 23 parts of binding agent, 0.7 part of wetting agent, 0.6 part of coloring agent and 14.7 parts of filler; and polyimide resin is prepared through polymerization of 4, 4'-bis(4-aminophenoxymethyl) triphenylamine, 1, 3-bis (3-aminophenoxy) benzene and pyromellitic dianhydride, and the polyimide resin is used as the binding agent to be mixed with the abrasive, the wetting agent, the coloring agent and the filler to prepare the polyimide resin cutting blades. The problems that in the prior art, the most of resin cutting blades are prepared by taking phenolic resin as thebinding agent, but the phenolic resin cutting blades are poor in heat resistance and abrasion resistance in the using process, the phenomena of cracking, chipping and the like are prone to occurring,and consequently the service life of the cutting blades is short are solved, the heat resistance and the abrasion resistance of obtained products are improved to a great extent, the service life of the cutting blades is prolonged, and the products are high in elasticity and strength and suitable for high-speed grinding.
Description
technical field [0001] The invention relates to the technical field of cutting sheets, in particular to a wear-resistant thin resin cutting sheet and a preparation method thereof. Background technique [0002] The cutting disc belongs to the grinding wheel, which is made of abrasive and binder resin and is used for ordinary steel, stainless steel metal and non-metallic materials. It has high tensile, impact and bending strength, and is widely used in ordinary steel and stainless steel. Metal and non-metal production blanking, excellent materials and exquisite workmanship ensure high cutting efficiency and best economic effect on workpieces of different materials. [0003] Cutting discs are mainly divided into fiber resin cutting discs and diamond cutting discs according to the material. Resin cutting discs use resin as the binder and glass fiber mesh as the ribs. The performance is particularly remarkable; the diamond cutting disc is a cutting tool, which is widely used in ...
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IPC IPC(8): B24D3/28B24D5/12B24D18/00
CPCB24D3/28B24D5/12B24D18/0009
Inventor 徐文正张刚邝镇环万梁山
Owner 惠州市新科磨具有限公司