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Acrylic sheet and preparation process thereof

A technology of acrylic sheet and preparation process, which is applied in the field of polymer materials, can solve the problems of no outdoor weather resistance, etc., and achieve the effect of excellent physical and mechanical properties, strong water resistance, and smooth surface

Active Publication Date: 2019-03-19
湖州久益有机玻璃有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. Unparalleled outdoor weather resistance

Method used

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  • Acrylic sheet and preparation process thereof
  • Acrylic sheet and preparation process thereof
  • Acrylic sheet and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]The preparation process of the acrylic sheet includes the following steps: after mixing methyl methacrylate, ethylene glycol dimethacrylate and azobisisobutyronitrile evenly according to the molar ratio of 1:0.02:0.003, pour it into the reaction kettle, Introduce nitrogen for 10 minutes; then stir and heat at 80 rpm to 70°C, pre-polymerize at 70°C for 1 hour, stop heating; quickly put the pre-polymerized reaction solution in an ice-water bath to cool to 40°C, pour into In the glass mold, let it stand for 30 minutes, and seal the glass mold with a polyvinyl chloride strip; then place the sealed glass mold at 60°C for 10 hours, at 80°C for 2 hours, at 100°C for 2 hours, and at 120°C for 2 hours. Hours, cooled naturally to 26°C, opened the glass mold, and obtained the acrylic sheet.

Embodiment 2

[0041] The preparation process of the acrylic sheet comprises the following steps: mixing methyl methacrylate, isobornyl methacrylate, ethylene glycol dimethacrylate and azobisisobutyronitrile according to the molar ratio of 0.85:0.15:0.02:0.003 After uniformity, pour it into the reaction kettle, and pass nitrogen gas for 10 minutes; then stir and heat to 70°C at 80 rpm, and stop heating after prepolymerization at 70°C for 1 hour; quickly put the prepolymerized reaction solution into ice Cool in a water bath to 40°C, pour it into a glass mold, let it stand for 30 minutes, and seal the glass mold with a polyvinyl chloride strip; then place the sealed glass mold at 60°C for 10 hours, and place it at 80°C for 2 hours, 100 ℃ for 2 hours, 120 ℃ for 2 hours, naturally cooled to 26 ℃, and the glass mold was opened to obtain the acrylic sheet.

Embodiment 3

[0043] The preparation process of the acrylic sheet comprises the following steps: after mixing evenly methyl methacrylate and nano-bentonite with 0.05 times the weight of the methyl methacrylate, adding 3-(trimethoxysilyl methacrylate) with 0.2 times the weight of the nano-bentonite ) propyl ester, stirred at 40° C. with 80 rpm for 24 hours in a nitrogen atmosphere to obtain a methyl methacrylate dispersion of 3-(trimethoxysilyl) propyl methacrylate modified nano-bentonite; The methyl methacrylate dispersion liquid of 3-(trimethoxysilyl)propyl acrylate modified nano-bentonite, isobornyl methacrylate, ethylene glycol dimethacrylate and azobisisobutyronitrile were mixed evenly Afterwards, methyl methacrylate, isobornyl methacrylate, ethyl dimethacrylate in the methyl methacrylate dispersion liquid of described 3-(trimethoxysilyl) propyl methacrylate modified nano-bentonite The molar ratio of diol ester to azobisisobutyronitrile is 0.85:0.15:0.02:0.003, pour it into the reaction...

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Abstract

The invention discloses an acrylic sheet and a preparation process thereof. The preparation process of the acrylic sheet comprises the following steps of uniformly mixing and pouring methyl methacrylate, crosslinking agent and azodiisobutyronitrile at a molar ratio of 1:0.01-0.02:0.002-0.004 into a reactor, and inletting nitrogen for 5-30 minutes; stirring and heating the mixture to 60-70 DEG C for prepolymerization for 1-2 hours; rapidly cooling the prepolymerized reaction liquor down to 30-40 DEG C, then pouring the cooled reaction liquor into a glass mold for standing for 30-60 minutes, andsealing up the glass mold; heating the sealed glass mold for curing, then naturally cooling the glass mold down to 20-30 minutes, and opening the glass mold to obtain the acrylic sheet. The acrylic sheet integrates the characteristics of wood and plastics, and is excellent in physical and mechanical performance, smooth in surface, good in water and applicable to industries such as building and home decoration.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an acrylic plate and a preparation process thereof. Background technique [0002] Acrylic board has the advantages of light weight, low price, and easy molding. It is mainly used for carving, decoration and handicraft production. The forming methods of acrylic sheet include casting, injection molding, machining, thermoforming and so on. The main research of the present invention is to prepare acrylic plate by casting method. [0003] In terms of construction, acrylic panels are mainly used in lighting bodies, roofs, roofs, stairs and interior wall panels. The application of acrylic sheets in lighting shades and automotive lamps for highways and advanced roads is also quite fast. With the construction of hotels, hotels and high-end residences in big cities, the lighting body is developing rapidly. The lighting body made of acrylic board has the characteristics of high...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F222/14C08F220/06C08F220/18C08K9/04C08K3/34
CPCC08F220/14C08K3/346C08K9/04C08K2201/011C08F222/102C08F220/1811C08F220/06
Inventor 张金娥
Owner 湖州久益有机玻璃有限公司
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