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Resin-based abrasive tool and preparation method thereof

A resin-based and abrasive tool technology is applied in the field of resin-based abrasive tools and their preparation, which can solve the problems of easy scorching, "cracking, and affecting the operation stability and service life of thick-walled resin-based abrasive tools."

Active Publication Date: 2020-05-12
安徽齐鑫新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low thermal conductivity of the resin matrix and the effect of long-term hot pressing, it is common for thick-walled resin-based abrasives to be "cooked" during the molding and hardening process, which seriously affects the operation stability of thick-walled resin-based abrasives. and service life
[0003] Therefore, it is an urgent problem to be solved in the present invention to provide a resin-based abrasive tool and its preparation method that can overcome the "cooking" phenomenon in the molding and hardening process of the thick-walled resin-based abrasive tool and improve its operation stability and service life.

Method used

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  • Resin-based abrasive tool and preparation method thereof
  • Resin-based abrasive tool and preparation method thereof
  • Resin-based abrasive tool and preparation method thereof

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preparation example Construction

[0022] The present invention provides a kind of preparation method of resin-based abrasive tool, wherein, described preparation method comprises:

[0023] 1) Pre-dispersion of abrasives: mixing and dispersing abrasives and dispersants to obtain pre-dispersed particles;

[0024] 2) Preparation of premix: mixing the predispersed particles, resin material and additives prepared in step 1) to prepare a premix;

[0025] 3) Abrasive coating: the premix prepared in step 2) is subjected to micro-nano particle shaping and coating to obtain composite particles;

[0026] 4) Molding hardening: After pressing the composite particles prepared in step 3), hardening is carried out to obtain a resin-based abrasive tool.

[0027] The above design first mixes and disperses abrasives and dispersants to obtain pre-dispersed particles, then mixes the above-mentioned pre-dispersed particles, resin materials and additives to obtain a premix, and then performs micro-nano particle shaping on the above...

Embodiment 1

[0047] First put 200g of 2000 mesh diamond powder and 20g of dispersant into a high-speed mixer at 80°C and mix for 5 minutes to prepare pre-dispersed particles, then pre-dispersed particles, 40g of 1000 mesh copper powder, 800g of phenolic resin particles and 600g of polyimide Amine resin particles are premixed with a high-speed mixer for 5 minutes at 1480r / min to obtain a premix; then 1500g of the premix is ​​put into the micro-nano particle shaping and coating equipment, and processed at a speed of 3000r / min (ie reaction) 10 minutes, discharging for 3 minutes, to obtain composite particles; then the composite particles were molded under the conditions of temperature 80°C and pressure 0.5MPa, and then hardened at 400°C for 5 hours to obtain a resin-based mill with a thickness of 75mm. With A1. Finally, the obtained resin-based abrasive tool was cross-cut, and it was found that there was no "cooking" inside the resin-based abrasive tool A1.

Embodiment 2

[0049] First put 200g of 2000 mesh diamond powder and 20g of dispersant into a high-speed mixer at 80°C and mix for 5 minutes to prepare pre-dispersed particles, then pre-dispersed particles, 40g of 1000 mesh copper powder, 800g of phenolic resin particles and 600g of polyimide Amine resin particles were premixed with a high-speed mixer for 5 minutes at 1480r / min to obtain a premix; then 1500g of the premix was put into the micro-nano particle shaping and coating equipment, and treated at a speed of 3000r / min for 10min, and the material was discharged (i.e. discharging) for 3 minutes to obtain composite particles; then the composite particles were formed at a temperature of 250 °C and a pressure of 10 MPa, and then hardened at 450 °C for 6 hours to obtain a resin-based mill with a thickness of 90 mm. With A2. Finally, the obtained resin-based abrasive tool was cross-cut, and it was found that there was no "cooking" inside the resin-based abrasive tool A2.

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Abstract

The invention discloses a resin-based grinding tool, and a preparation method thereof. The preparation method comprises following steps: 1, pre-dispersion of a grinding material, wherein the grinding material and a dispersant are subjected to mixing and dispersing so as to obtain pre-dispersed particles; 2, preparation of a pre-mixed material, the pre-dispersed particles, a resin material, and an additive are mixed so as to obtain the pre-mixed material; 3, grinding material coating, wherein the pre-mixed material is subjected to micro / nano-particle shaping coating so as to obtain composite particles; and 4, moulding and hardening, wherein the composite particles are subjected to pressing and hardening so as to obtain the resin-based grinding tool. The preparation method is capable of avoiding incomplete hardening in thick wall resin grinding tool moulding hardening process, operation stability is improved, and service life is prolonged.

Description

technical field [0001] The invention relates to the field of production and preparation of abrasive tools, in particular to resin-based abrasive tools and a preparation method thereof. Background technique [0002] In the fields of precision manufacturing and fine processing, such as: bearing balls, polysilicon, single crystal silicon, and mobile phone screen polishing, resin-based abrasives are a commonly used polishing tool. Due to the low thermal conductivity of the resin matrix and the influence of long-term hot pressing and easy burning, "cooking" is common in the forming and hardening process of thick-walled resin-based abrasives, which seriously affects the operation stability of thick-walled resin-based abrasives. and service life. [0003] Therefore, it is an urgent problem to be solved in the present invention to provide a resin-based abrasive tool and its preparation method that can overcome the phenomenon of "cooking" in the molding and hardening process of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/06C08L79/08C08K3/04C08K3/08
CPCC08K2003/085C08L61/06C08L79/08C08K3/04C08K3/08
Inventor 任冬寅高博王伟
Owner 安徽齐鑫新材料科技有限公司
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