Adhesive for coated abrasive tools, preparation method and coating method thereof

Abstract

The invention discloses an adhesive for coated abrasives, which is made of the following components in parts by weight: 100 water-soluble phenolic resins, 10-12 modified functional resins, and 15-30 fillers. The preparation method of the adhesive for coated abrasive tools comprises the following steps: mixing and stirring the above components for 0.5-2 hours to prepare a uniform viscous liquid. The method of applying the adhesive for abrasive tools includes the following steps: (1) Pre-drying: After the glue is applied, the sand is planted, and the temperature is higher than 100 degrees for 20 minutes, and the sand particles can be positioned; (2) , Main drying: After regluing, directly heat at 110-120°C for 2 hours, and the sand surface adhesive layer can be completely cured. The beneficial effects of the present invention are: rapid temperature rise, one-time curing in the drying chamber, no need for secondary curing furnace curing, saving two-day curing time and energy consumption, avoiding large curing temperature difference and large color difference in product appearance, and eliminating product color difference , significantly increased the brightness of the appearance of the product, and improved the toughness.

Description

technical field [0001] The invention relates to an adhesive and a coated abrasive, in particular to an adhesive for a coated abrasive, a preparation method and a coating method thereof. Background technique [0002] At present, the adhesive products coated with abrasive tools at home and abroad must go through a gradual and slow heating process from low temperature (room temperature) to high temperature (the final product requires a curing temperature of 110-120 ° C), and the temperature of each section (such as 60°C, 70°C, 80°C and 110°C-120°C, etc.) in order to achieve the basic strength and related quality requirements of coated abrasive products. The production time of the above-mentioned adhesive products is relatively long, and when sufficient production volume is to be ensured, the production process must be decomposed and completed in multiple steps. In the existing technology, the secondary curing mode is generally adopted, which consumes energy and time; under lon...

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Problems solved by technology

In the existing technology, the secondary curing mode is generally adopted, which consumes energy and time; under long-term high temperature conditions, the base material of the abrasive product will be damaged; because it is produced in large rolls, the temperature difference between the inner and outer layers is too large, and the heating is inconsistent , resulting in an oversized product

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