一种砂轮及其制备方法

By modifying nano-silica with POSS and polyimide resin with long-chain nylon, the problems of vibration and high forming temperature of polyimide resin grinding wheels in the grinding process of materials with high grinding resistance are solved, and the heat resistance and impact resistance are improved, making it suitable for grinding composite materials and hard and brittle materials.

CN118809468BActive Publication Date: 2026-07-17ZHENGZHOU SHINE MORE SUPERABRASIVES +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHENGZHOU SHINE MORE SUPERABRASIVES
Filing Date
2024-08-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing polyimide resin grinding wheels are prone to vibration and grinding force fluctuations during the grinding process of materials with high grinding resistance, and the high molding temperature leads to bubble formation and performance degradation.

Method used

POSS-modified nano-silica slurry and long-chain nylon resin powder were used to modify polyimide resin. Grinding wheels were prepared by cold pressing and hot pressing processes, which reduced the molding temperature and improved the impact resistance.

Benefits of technology

The prepared grinding wheel has good heat resistance, strong impact resistance, and high self-sharpening properties, making it suitable for grinding materials with high grinding resistance, thus avoiding the generation of bubbles and performance degradation.

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Abstract

本发明提出了一种砂轮及其制备方法，为了满足高磨削抗力材料的研磨需求，所述砂轮包括砂轮基体和磨料层，磨料层由下述质量百分比的原料制成：磨料30‑45%，改性树脂18‑50%，铜粉8‑28%，银粉1‑10%，填料粉末1‑15%；所述改性树脂包括POSS改性纳米二氧化硅、聚酰亚胺树脂粉和长碳链尼龙树脂粉。POSS的桥接作用，将纳米二氧化硅颗粒、树脂粉和填料粉末等结合在一起，抗冲击性好、耐热性好、强度高，综合性能优异。改性树脂耐热性好、抗冲击性好、桥接效果好，纳米二氧化硅还起到辅助磨削和提高热稳定性的作用，铜粉和银粉提高磨料层导热性，填料增加树脂结合剂强度，配方搭配合理，更适宜高磨削抗力材料的加工。
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