Novel preparation method of epoxy tooling board

Abstract

The invention relates to a novel preparation method of an epoxy tooling board. The novel preparation method comprises the following steps in sequence: feeding each material of a component A into a stirrer based on the fixed ratio; stirring and mixing for 40 to 80 minutes; feeding each material of a component B into the stirrer based on the fixed ratio; stirring and mixing for 40 to 80 minutes; respectively conveying the uniformly-mixed components A and B into a vacuum gapped tank through an automatic metering device based on the ratio of A to B of (4:1) to (1:1); stirring for 40 to 80 minutes; conveying the qualified materials of the uniformly-mixed components A and B into a vacuum tank by the automatic metering device; filling under the vacuum condition; curing the filled material for 1.5 to 3 hours at normal temperature; and curing at high temperature of 90 to 100 DEG C, thus obtaining the epoxy tooling board. The novel preparation method of the epoxy tooling board is high in automatic control degree, low in labor cost, high in production efficiency, stable in quality, low in density, high in strength and low in deformation rate.

Description

technical field [0001] The invention relates to the field of preparation methods of epoxy wood substitutes. Background technique [0002] China's auto industry has flourished in the past decade, especially its own brand cars. The shape design of the new model must first produce drawings, then make a 1:1 model and then modify it, and finally finalize it. At this time, the material for making the model is required: light, with sufficient strength, easy to process, small shrinkage and deformation, repairable, and low cost. In the past, model materials were mainly made of unsaturated resin, but unsaturated resin has large shrinkage and deformation, low strength, and strong odor. No matter the production process or processing process, it emits a strong irritating odor, which is not good for the environment and bad for the human body. Therefore, we need a new type of epoxy wood substitute material that can overcome the above defects and is suitable for car model making. However...

AI Technical Summary

Problems solved by technology

However, the chemical properties of epoxy resin are completely different from those of unsaturated resin, and a special production process is required to produce qualified products

And now the epoxy resin releases a lot of heat during the curing process, and there will be a problem of large deformation. Therefore, in order to alleviate the problem of large deformation, people try to add aluminum to the material to increase heat dissipation, but this method not only increases the cost but also increases the heat dissipation. cause environmental pollution