Spray-free thermosetting resin composition with special aesthetic effect and its preparation method and application

Abstract

The invention discloses a spraying-free thermosetting resin composition having special aesthetic effects and a preparation method and an application thereof. The spraying-free thermosetting resin composition comprises the following components: 70-98 wt% of thermosetting resin, 1-25 wt% of microspheres formed by coating a special-effect powder with a polymer, 0-10 wt% of a compatibilizer, 0.1-1 wt% of an antioxidant, and 0.1-0.5 wt% of a processing auxiliary agent. The special-effect powder is coated with a water-based polymer dispersion liquid to form the microspheres, and then the microspheres are dispersed to the thermosetting resin, so that the compatibility of the special-effect powder and the thermosetting resin can be significantly improved, flow marks formed on the surface of products in an extrusion or injection molding process are eliminated, and weld lines are reduced; and the prepared spraying-free thermosetting resin composition has relatively obvious metal texture, pearly flashing effects and other special aesthetic effects, and the market application range of spraying-free materials is greatly improved.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a spray-free thermosetting resin composition with special aesthetic effects, a preparation method and application thereof. Background technique [0002] As people pay more and more attention to environmental issues, spray-free material products are gradually showing their competitiveness. Spray-free aesthetic resins can replicate the bright and colorful hues produced by spray paint, pearlescent, glitter effects, metallic luster and texture, etc. Special effects, so as to meet diversified and differentiated customer needs, and can truly achieve energy saving and emission reduction in the production process, and can be widely used in electronic appliances, vehicles and ships, chemicals, machinery, construction, sports, daily necessities and other fields. [0003] At present, the more common preparation method of spray-free resin is to add metal powder, pearl powder and ...

AI Technical Summary

Problems solved by technology

By dispersing the special effect powder into the matrix resin, the special effect powder is connected to each other to form a continuous special effect film, which covers the base material and presents a special effect texture, although the special effect powder is directly added to the resin base. , can achieve a special glossy effect, but the compatibility between the matrix resin and the special effect powder is poor. Under the strong pressure and strong shear conditions of extrusion or injection molding, it is difficult for the special effect powder and the matrix resin material to achieve the same fluidity, especially It is a product with a complex structure. The special effect powder oriented along the flow direction occurs and the melt flow turns, the flow velocity is unstable, and the melt merges, etc., causing the special effect powder to be unevenly distributed in the melt and easy to form on the surface of the product. Defects such as flow marks and weld lines seriously prevent and limit the market promotion and application of this type of spray-free material

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