High-weather-resistance polyvinyl chloride light-blocking foam board and preparation method thereof

Abstract

The invention relates to the technical field of polyvinyl chloride foam boards, in particular to a high-weather-resistance polyvinyl chloride light-blocking foam board and a preparation method thereof. The high-weather-resistance polyvinyl chloride light-blocking foam board is prepared from the following raw materials in parts by weight: 150 parts of PVC resin powder, 10-25 parts of filler, 5-10 parts of ACR modifier, 10-20 parts of foaming regulator, 0.1-5 parts of composite foaming agent, 3-7 parts of environment-friendly stabilizer, 0.2-0.8 part of plasticizer, 1-4 parts of lubricant, 15-30parts of light blocking modifier, 0.1-2 parts of coupling agent, 0.1-3 parts of pigment and 50 parts of recycled material. The high-weather-resistance polyvinyl chloride light-blocking foam board notonly has excellent light-blocking performance, but also has good weather resistance, corrosion resistance and bending resistance, and ensures the advantages of low density and high hardness of the polyvinyl chloride foam board, is convenient to install and use, and can replace a coating material of a traditional lamp box side panel. The invention also provides a preparation method of the high-weather-resistance polyvinyl chloride light-blocking foam board.

Description

technical field [0001] The invention relates to the technical field of polyvinyl chloride foamed boards, in particular to a highly weather-resistant polyvinyl chloride light-blocking foamed board and a preparation method thereof. Background technique [0002] With the development of the commercial economy, the advertising industry is also undergoing earth-shaking changes. New acrylic advertising materials and the luminous light boxes and luminous characters made of them are popular among people. When making luminous advertising light boxes or luminous characters, acrylic materials are generally used directly. The acrylic plate is carved three-dimensionally, and it is equipped with luminous lamps to make it have a luminous effect. In order to improve the clarity and luminous effect of the engraved font shape after luminescence, it is generally formed by sealing and covering the side of the light box or font with other opaque materials. Closed light box side panel, the traditi...

AI Technical Summary

Problems solved by technology

Patent CN99121501X discloses an extruded asymmetric solid surface composite material, in which an opacifying agent such as titanium dioxide is added to the polymer resin to make the composite material have a good light-blocking effect, but the addition of the opacifying agent will make the mechanical properties of the composite material declined

Patent CN2007101717064 discloses a light-blocking material, adding composite light-blocking agent and flame retardant, toughening agent, heat-resistant agent, filler, light stabilizer, antioxidant, lubricant and other additives to the polymer resin, The light-colored light-blocking material prepared by it can achieve a very effective light-blocking effect when the thickness is only 3mm, which solves the problem of poor light-blocking effect of light-colored materials, and at the same time ensures the mechanical properties of the composite material

[0005] However, the above-mentioned patents all apply light blocking agents to high-density polymer materials. Adding light blocking agents to the raw materials of polyvinyl chloride foamed boards will not only affect the mechanical properties and weather resistance of polyvinyl chloride foamed boards, but also It will affect the foaming process of the PVC foamed sheet and increase the density of the PVC foamed sheet

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