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Solvent thermal polymerization method of methyl methacrylate-silicane copolymer

A technology of methyl methacrylate and silane copolymer, which is applied in the field of preparing methyl methacrylate-silane copolymer by solvothermal synthesis, can solve the problems of many operations required, complex synthesis process, harsh reaction conditions, etc., and achieve The reaction process is simple, the reaction activity is high, and the effect of complete reaction

Inactive Publication Date: 2012-06-20
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing method for synthesizing methyl methacrylate copolymer more or less all has complex synthetic process, the defective of harsh reaction condition, the general class of copolymer is limited, and the problems such as required operation are many, will certainly affect industrialization development, the modification of PMMA is also limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Solvothermal Synthesis of Methyl Methacrylate-Maleic Anhydride-γ-Glycidyl Etheroxypropyltrimethoxysilane Copolymer

[0022] 5.09g of methyl methacrylate, 1.40g of γ-glycidyloxypropyltrimethoxysilane, 2.80g of maleic anhydride, and 0.05g of dicumyl peroxide were successively dissolved in 40mL of tetrahydrofuran solvent and mixed uniformly. Add the mixed solution into the autoclave, and seal it after blowing nitrogen for 3 minutes. Place the autoclave in a constant temperature box, react at 120° C. for 4 hours, take it out and cool it. After cooling, pour the product solution into anhydrous ethanol under stirring state to precipitate, then suction filter, wash with absolute ethanol and vacuum dry to obtain polymethyl methacrylate-maleic anhydride-γ-glycidoxy Propyltrimethoxysilane copolymer.

Embodiment 2

[0024] Solvothermal Synthesis of Methyl Methacrylate-Vinyl Trimethoxysilane Copolymer (No Synergistic Copolymer Monomer)

[0025] 8.20 g of methyl methacrylate, 1.70 g of vinyltrimethoxysilane, and 0.1 g of benzoyl peroxide were successively dissolved in 30 mL of xylene solvent and mixed uniformly. The mixed solution was added into the autoclave, and sealed after 4 minutes of nitrogen gas, the autoclave was placed in a constant temperature box, reacted at 80° C. for 8 hours, and was taken out for cooling. After cooling, pour the product solution into dehydrated ethanol under stirring state to precipitate, then suction filter, wash with dehydrated ethanol and vacuum dry to obtain polymethyl methacrylate-vinyltrimethoxysilane copolymer.

Embodiment 3

[0027] Solvothermal Synthesis of Methyl Methacrylate-γ-Methacryloyloxypropyltrimethoxysilane Copolymer

[0028] Dissolve 6.17g of methyl methacrylate, 6.00g of γ-methacryloxypropyltrimethoxysilane, 5.11g of acrylic acid, and 0.35g of azobisisobutyronitrile in 10mL of N,N-dimethylacetamide solvent In, mix well. Add the mixed solution into the autoclave, and seal it after passing nitrogen gas for 5 minutes. Place the autoclave in a constant temperature box, react at 65° C. for 12 hours, take it out and cool it. After cooling, pour the product solution into anhydrous ethanol under stirring state to precipitate, then suction filter, wash with absolute ethanol and dry in vacuum to obtain methyl methacrylate-γ-methacryloyloxypropyl trimethoxy silane copolymers.

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PUM

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Abstract

The invention relates to a solvent thermal polymerization method of methyl methacrylate-silicane copolymer. The method comprises the following steps of: thoroughly mixing methyl methacrylate monomers, silicane-containing comonomers, synergistic comonomers, initiators and solvents, loading the mixture to a high-pressure reaction kettle, and introducing nitrogen to remove air; then closing the high-pressure reaction kettle cover, allowing reactions to take place in the high-temperature closed system while controlling reaction temperature and time; and washing and drying the reaction product after the reactions are completed, to obtain the methyl methacrylate-silicane copolymer. The solvent thermal polymerization method has a simple process and rapid and controllable reaction. The silicon content of the product of methyl methacrylate-silicane copolymer is increased, so as to retain the performances of polymethyl methacrylate and endow the material with different performances. The methyl methacrylate-silicane copolymer can be widely applied to the fields of optical instruments and coatings.

Description

technical field [0001] The invention relates to a method for synthesizing a methyl methacrylate-silane copolymer, in particular to a method for preparing a methyl methacrylate-silane copolymer by adopting a solvothermal synthesis method in a high-pressure reactor. Background technique [0002] As a transparent material with excellent performance, polymethyl methacrylate is widely used in lamps, optical glass, optical fiber, various instrument panels, etc. The density of polymethyl methacrylate is lower than that of glass. The relative molecular mass of polymethyl methacrylate is about 2 million. It is a long-chain polymer compound, and the chain forming the molecule is very soft. Therefore, its strength is relatively high. The ability to resist stretching and impact is 7-18 times higher than that of ordinary glass. Therefore, stretched plexiglass can be used as bulletproof glass and canopy on military aircraft. The melting point of polymethyl methacrylate is much lower tha...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F230/08C08F2/06
Inventor 金婕妤戚嵘嵘胡新利罗宇陆佳琦
Owner SHANGHAI JIAO TONG UNIV
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