O-phenyl type photo-curable unsaturated polyester resin and preparation method thereof

Abstract

The invention discloses o-phenyl type photo-curable unsaturated polyester resin comprising the following components in parts by weight: 10-15 parts of maleic anhydride, 18-25 parts of tetrahydrophthalic anhydride, 10-15 parts of ethylene glycol, 10-15 parts of propylene glycol, 25-30 parts of styrene, 2-5 parts of a composite photoinitiator, 1-3 parts of an ultraviolet absorbent, 0.3-0.5 part of aleveling agent and 0.08-0.1 part of methylhydroquinone. The prepared o-phenyl type photo-curable unsaturated polyester resin has the characteristics of medium viscosity, medium reaction activity, mild heat release and high solid content, and can be cured rapidly under the action of the accelerator and the photo-initiator. The material processed and molded by the o-phenyl type photo-curable unsaturated polyester resin has good light transmittance, jade texture, durable weathering resistance, and low curing shrinkage. When forming a molding sheet product with complex and deep structure, crackscan be guaranteed not to be easily produced in the deep structure.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an ortho-phthalic light-cured unsaturated polyester resin and a preparation method thereof. Background technique [0002] Unsaturated polyester is a strong and tough polymer material after cross-linking and curing. It is often used as a substrate for coatings, glass fiber reinforced plastics and decorations, and has a good application prospect. The unsaturated polyester used in the production of decorations needs to have the ability of rapid curing and molding in the processing technology, because the decorations used in decoration engineering have more complex three-dimensional shapes, if the unsaturated resin cannot be quickly and uniformly formed during the molding process Curing, shrinkage and deformation will occur during the molding process and the curing degree of the deep structure will not be complete, resulting in the shape of the molded decoration...

AI Technical Summary

Problems solved by technology

The unsaturated polyester used in the production of decorations needs to have the ability of rapid curing and molding in the processing technology, because the decorations used in decoration engineering have more complex three-dimensional shapes, if the unsaturated resin cannot be quickly and uniformly formed during the molding process Curing, shrinkage and deformation will occur during the molding process and the curing degree of the deep structure will not be complete, resulting in the shape of the molded decoration not meeting the required shape or cracks on the surface of the component. Good unsaturated polyester is especially important

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