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

Abstract

The invention discloses an adhesive for coated abrasive tools. The adhesive is prepared by the following components in parts by weight: 100 parts of water-soluble phenol-formaldehyde resin, 10-12 parts of modified functional resin, and 15-30 parts of a filling agent. A preparation method of the adhesive for coated abrasive tools comprises the following steps: the components are stirred for 0.5-2 hours for mixing, and uniform viscous liquid is prepared. A method for coating the adhesive for coated abrasive tools comprises the following steps: (1) predrying: sand-planting is carried out after gluing, the temperature is raised to 100 DEG C, predrying is carried out for 20 minutes, and the sand grains are positioned; (2) main drying: the adhesive is coated again, heating is carried out at 110-120 DEG C for 2 hours, and a glue-line on the sand face is completely solidified. The method has the beneficial effects that rapid heating can be carried out, once solidification is needed in a drying chamber for completion, secondary solidification in a curing furnace is not needed, time of three days for the secondary solidification and energy consumption thereof are saved, large solidification temperature difference and large chromatic aberration of the product appearance are avoided, chromatic aberration of the product appearance is eliminated, brightness of the product appearance is obviously increased, and toughness of the product is improved.

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...

AI Technical Summary

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