Acrylic sheet and method for producing the same

CN122302462APending Publication Date: 2026-06-30SHANGHAI KINGSCOPE NEW MATERIAL CO LTD
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Patent Information

Application Number
CN202610514273.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-17
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing technologies struggle to significantly reduce the internal stress of acrylic sheets while maintaining high light transmittance and improving their weather resistance for long-term outdoor use.

Method used

Surface-modified nano-silica particles are used to form an organic-inorganic hybrid network structure. Through a four-stage stepped heating polymerization process and vacuum annealing, combined with ultraviolet absorbers and light stabilizers with specific structures, polymerization shrinkage stress, thermal stress and demolding stress are synergistically eliminated.

Benefits of technology

It significantly reduces the internal stress of acrylic sheets, improves weather resistance for long-term outdoor use, and maintains high light transmittance, making it suitable for industrial production.

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Abstract

This application relates to the field of acrylic sheet technology, and discloses an acrylic sheet and its preparation method. The acrylic sheet comprises 100 parts of methyl methacrylate monomer; 0.05-0.5 parts of initiator; 0.1-0.8 parts of chain transfer agent; 0.1-1.0 parts of ultraviolet absorber; 0.05-0.5 parts of light stabilizer; 0.01-0.1 parts of release agent; and 0.5-3 parts of nano-silica modified particles. The nano-silica modified particles have a particle size of 20-60 nm, and their surface undergoes a double modification treatment. In the double modification process, the first modifier is γ-methacryloyloxypropyltrimethoxysilane, and the second modifier is octadecyltrichlorosilane or isopropyltris(dioctylpyrophosphate)titanate. This application successfully overcomes the constraints between light transmittance, internal stress, and weather resistance in the prior art, and provides an acrylic sheet with excellent comprehensive performance and suitable for industrial production, as well as its preparation method.
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