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Wetting adhesive for resin-based grinding wheel, preparation method and application thereof

A wetting binder and resin-based technology, which is used in the preparation of resin-based grinding wheels and various cutting or grinding tools, can solve the problem that the resin binder cannot be coated on the surface of multi-edge abrasive particles and the performance is unstable. , Insufficient wetting agent activity, etc.

Active Publication Date: 2021-06-29
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the former has high pressing efficiency and simple operation, it cannot achieve the state of covering all the resin binder on the surface of the multi-edged abrasive particles at room temperature, and the internal structure of the obtained product is not uniform, and the performance is unstable; the latter is in the mixing process. Adding a wetting agent can effectively improve the overall performance of the product, but the existing wetting agents still have fatal shortcomings: The wetting agent is not active enough to completely wet the surface of the multi-edge abrasive particles and the surface of the resin bond particles at the same time; At room temperature, it is still not possible to fully coat all the resin bond on the surface of the multi-edge abrasive grains to form a coating state in which the resin bond is coated on the multi-edge abrasive grains
Therefore, the products made by the existing wetting agent mixing and hot pressing process still cannot solve the defects of uneven distribution of multi-edged abrasive particles, weak coating force, and unstable product performance. For this reason, the present invention adopts a A Homemade Wetting Binder

Method used

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  • Wetting adhesive for resin-based grinding wheel, preparation method and application thereof
  • Wetting adhesive for resin-based grinding wheel, preparation method and application thereof
  • Wetting adhesive for resin-based grinding wheel, preparation method and application thereof

Examples

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Effect test

preparation example Construction

[0061] A kind of preparation method of above-mentioned multi-edge abrasive particle composition, specifically comprises the following steps:

[0062] a. Add the self-made wetting adhesive dropwise to the multi-edge abrasive particles, put it in a three-dimensional mixer and mix for 5-25 minutes, so that the surface of each multi-edge abrasive particle is covered with self-made wetting and bonding agent;

[0063] b. Weigh an appropriate amount of inorganic filler and sieve it into a three-dimensional mixer and mix for 10-30 minutes, then add resin powder, mix for 1-3 minutes, and sieve to prepare the required resin binder;

[0064] c. Sieve the wetted multi-edged abrasive particles, and disperse them evenly in the resin bond after sieving, then put them into a three-dimensional mixer and mix them for 5-10 minutes. After sieving, you can get almost no Powder leakage, no abrasive aggregation, loose small spherical coated multi-edge abrasive particle composition with good formabi...

Embodiment 1

[0069] Phenolic resin wetting binder and coated multi-edge abrasive particle composition prepared by applying the wetting binder

[0070] a. Add 15 grams of phenolic resin liquid and 30 grams of phenolic resin powder into 100 grams of organic solvent, and stir until the resin powder is completely dissolved to form a uniform and transparent solution;

[0071] b. Add 20 grams of tackifier to 1 gram of surfactant, stir for 10 minutes, add to the solution prepared in a, then add 3 grams of crosslinking agent, stir for 5 minutes, finally add dispersion stabilizer, and stir for 8 minutes; Prepare a uniform, non-precipitating suspension, that is, a self-made wetting binder;

[0072] c. Weigh an appropriate amount of inorganic filler and sieve it into a three-dimensional mixer to mix for 3-15 minutes, then add resin powder, mix for 1-3 minutes, and sieve to prepare the required resin binder.

[0073] d. Add 30 grams of self-made wetting adhesive dropwise to 1000 grams of multi-edged ...

Embodiment 2

[0077] Embodiment 2, phenolic resin wetting adhesive and the coated multi-edge abrasive particle composition prepared by using the wetting adhesive

[0078] a. Add 15 grams of phenolic resin liquid and 35 grams of resin powder into 100 grams of organic solvent, and stir until the resin powder is completely dissolved to form a uniform and transparent solution;

[0079] b. Add 20 grams of tackifier to 1 gram of surfactant, stir for 10 minutes, add to the solution prepared in a, then add 3 grams of crosslinking agent, stir for 5 minutes, finally add dispersion stabilizer, and stir for 8 minutes; Prepare a uniform, non-precipitating suspension, that is, a self-made wetting binder;

[0080] c. Weigh an appropriate amount of inorganic filler and sieve it into a three-dimensional mixer to mix for 3-15 minutes, then add resin powder, mix for 1-3 minutes, and sieve to prepare the required resin binder.

[0081] d. Add 30 grams of self-made wetting adhesive dropwise to 1000 grams of mu...

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Abstract

A wetting adhesive for a resin-based grinding wheel according to the present invention and its preparation and use method, the mass percentage of each component of the wetting adhesive: machine solvent: 11-73.3%, resin liquid: 10-20%, resin powder: 10‑40%, crosslinking agent: 0.5‑3%, tackifier: 5‑20%, surfactant: 0.2‑4% and dispersion stabilizer 1‑2%; the viscosity range is 280 mPa s ( 35°C)‑590.5 mPa·s (25°C). The prepared wetting adhesive is simple to configure, easy to store, has appropriate viscosity, and has good wettability to the multi-edge abrasive particles and the resin bond, and the prepared coated multi-edge abrasive particle combination of the coated structure The material can achieve no powder leakage, no abrasive aggregation phenomenon, moderate looseness, good formability, uniform structure of the pressed abrasive tool, stable performance, low temperature strength and high temperature strength have been greatly improved.

Description

technical field [0001] The invention belongs to the technical field of preparation of resin-based grinding wheels and various cutting or grinding tools, and relates to the research and development of a wetting adhesive for resin-based grinding wheels and the coated edge abrasive particles prepared by using the wetting adhesive The method of composition, and the production process problems related to the resin grinding wheel. [0002] technical background [0003] After nearly ten years of literature search, there are two general preparation methods for the existing resin-based grinding wheel: one is to mix the dry powder of resin bond with multi-edged abrasive particles and directly put it into the mold for hot pressing; The product is obtained by adding a wetting agent to the resin bond and the multi-edge abrasive particles and mixing them together, and then carrying out mold loading and hot pressing. Although the former has high pressing efficiency and simple operation, it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D3/28B24D3/34B24D18/00
CPCB24D3/28B24D3/344B24D18/0009
Inventor 郝俊杰王俊姿纪振晖吴成义张晓冬
Owner UNIV OF SCI & TECH BEIJING