CN102114620B - Resin matrix composite for flexible grinding and polishing - Google Patents

Abstract

A resin-based composite material for flexible grinding and polishing belongs to the technical field of composite materials, and the invention relates to a method for preparing a resin-based composite material for flexible grinding and polishing. The preparation process of the resin-based composite material is: mix cement, 100-200 mesh of quartz sand, 100-200 mesh of alumina powder, etc. according to a certain weight percentage, add water and polycarboxylate water reducer, and stir in a mortar mixer After 3-5 minutes, apply the slurry on the surface of the resin foam, let the slurry enter it, and then put it in a standard curing box at 19-21°C and humidity > 90% for 3-7 days. The composite material can meet the requirements of grinding and polishing. Require. The method has simple process and low production cost, and has good application value for grinding and polishing the surface of special-shaped complex workpieces and improving the surface smoothness.

Description

A resin-based composite material for flexible grinding and polishing

technical field

The invention specifically relates to a method for preparing a resin-based composite material for flexible grinding and polishing, which is used for grinding and polishing treatment of special-shaped complex surfaces.

Background technique

Grinding and polishing are one of the commonly used processing methods for metal materials. At present, abrasive materials similar to grinding wheels are most used, but rigid grinding wheels are only suitable for processing flat metal workpieces. There are many When it is necessary to improve the surface finish of parts with special-shaped and complex surfaces, grinding wheel grinding is powerless. The abrasive tool material capable of flexible grinding and polishing obtained by the invention can solve such problems.

Contents of the invention

The invention provides a method for preparing a resin-based composite material for flexible grinding and polishing. The preparation process of the resin-based composite material is: mix cement, 100-200 mesh of quartz sand, 100-200 mesh of alumina powder, etc. according to a certain weight percentage, add water and polycarboxylate water reducer, and stir in a mortar mixer After 3-5 minutes, apply the slurry on the surface of the resin foam, let the slurry enter it, and then put it in a standard curing box at 19-21°C and humidity > 90% for 3-7 days. The composite material can meet the requirements of grinding and polishing. Require. The method has simple process and low production cost, and has good application value in dezincification of waste galvanized sheets and other industries requiring grinding and polishing. It is characterized in that: (1) cement, quartz sand 100-200 mesh, alumina powder 100-200 mesh, water and polycarboxylate water reducing agent (accounting for the weight percentage of cement) are mixed in a certain proportion, cement 20-60%, Quartz sand powder 30-80%, water 10-30%, polycarboxylate superplasticizer 0.05-0.2%, alumina powder 10%-30%, stirring time 3-5 minutes; (2) After stirring, the slurry Coating on the surface of the resin foam, allowing the slurry to penetrate into it; (3) putting the composite material in a standard curing box at 19-21° C. and humidity > 90% for curing for 3-7 days.

Detailed ways

The content of the present invention will be further described below in conjunction with examples of implementation.

Example 1 Mix 40% of cement, 40% of 100-mesh quartz sand, 20% of water, and 0.05% of polycarboxylate superplasticizer in a mixer for 3-5 minutes, then coat and resin foam, and then put the composite material Put it into a standard curing box at 19-21°C and humidity >90% for 3-7 days to obtain a composite material that can be ground and polished.

Example 2 Mix 45% cement, 20% 140-mesh quartz sand, 15% 100-mesh alumina, 20% water, and 0.05% polycarboxylate superplasticizer in a mixer for 3-5 minutes, then coat with resin foam and then put the composite material into a standard curing box at 19-21° C. and humidity >90% for 3-7 days to obtain a composite material that can be ground and polished.

Example 3 Mix 35% of cement, 50% of 100-mesh quartz sand, 15% of water, and 0.1% of polycarboxylate superplasticizer in a mixer for 3-5 minutes, then coat and resin foam, and then put the composite material Put it into a standard curing box at 19-21°C and humidity >90% for 3-7 days to obtain a composite material that can be ground and polished.

Claims (2)

1. A method for preparing a resin-based composite material for flexible grinding and polishing, characterized in that: 20-60% of cement, 30-80% of quartz sand, 10%-30% of alumina powder, and 10-30% of water and polycarboxylate superplasticizer 0.05-0.2% according to the proportion and stir for 3-5 minutes, then coat the slurry on the surface of the resin foam, and after curing for 3-7 days under the curing conditions of temperature 19-21 ℃ and humidity > 90% It can be used as a flexible grinding and polishing material. 2. The preparation method according to claim 1, characterized in that, the particle size of the quartz sand is 100-200 mesh, and the alumina powder is 100-200 mesh.