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PMMA copolymerized functional resin and preparation method thereof

A functional resin and copolymerization technology, applied in the field of binary copolymer resin and its preparation, PMMA copolymerization functional resin and its preparation field, can solve the problems of large equipment investment, wider molecular weight distribution, and complicated post-processing.

Active Publication Date: 2021-12-28
FINE BLEND POLYMER SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gel effect occurs in the polymerization process of many monomers, but in the bulk polymerization of MMA, the gel effect is very obvious. This feature will increase the polymerization reaction rate significantly, and the automatic acceleration effect will appear, and the molecular weight distribution will be broadened.
[0004] In addition, free radical polymerization production technologies include bulk polymerization, suspension polymerization, solution polymerization, emulsion polymerization, etc. Among them, the investment in bulk polymerization equipment is large; solution polymerization uses solvents, and the post-treatment is complicated; emulsion polymerization contains a large amount of emulsifiers, and the washing water consumption is large; Conventional suspension polymerization, in order to control the heat release, the water ratio is very large, and the yield of the single reactor of the equipment is very low

Method used

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  • PMMA copolymerized functional resin and preparation method thereof
  • PMMA copolymerized functional resin and preparation method thereof
  • PMMA copolymerized functional resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Methyl methacrylate accounting for 99.5% of the total amount of monomers, glycidyl methacrylate accounting for 0.5% of the total amount of monomers, all oil-soluble initiators azobisisobutyronitrile accounting for 0.3% of the total amount of monomers, All the molecular weight regulator dodecyl mercaptan accounting for 1% of the total monomer, all the dispersant active calcium phosphate accounting for 1.5% of the total monomer, and deionized water 1.5 times the total monomer weight were mixed in the reactor. Under normal stirring, react at 70°C for 3 hours, then raise the temperature to 95°C for aging for 1 hour; then discharge the material in the storage tank, filter and wash with deionized water, and then dry the obtained product at 90°C to constant weight to obtain the final Product PMMA functional copolymer resin.

[0025] figure 1 Be the infrared spectrum of the product PMMA copolymerization GMA functional resin of embodiment 1, at 1620~1680cm -1 There are no char...

Embodiment 2

[0027] Methyl methacrylate accounting for 90% of the total amount of monomers, glycidyl methacrylate accounting for 10% of the total amount of monomers, all oil-soluble initiator azobisisobutyronitrile accounting for 0.3% of the total amount of monomers, All the molecular weight regulator dodecyl mercaptan accounting for 1% of the total monomer, all the dispersant active calcium phosphate accounting for 1.5% of the total monomer, and deionized water 1.5 times the total monomer weight were mixed in the reactor. Under normal stirring, react at 70°C for 4 hours, then raise the temperature to 95°C and mature for 1 hour; then discharge the material into the storage tank, filter and wash with deionized water, and then dry the obtained product at 90°C to constant weight to obtain the final Product function Copolymer resin.

Embodiment 3

[0035] Methyl methacrylate accounting for 98% of the total amount of monomers, glycidyl methacrylate accounting for 2% of the total amount of monomers, all oil-soluble initiators azobisisobutyronitrile accounting for 0.35% of the total amount of monomers, All the molecular weight regulator dodecyl mercaptan accounting for 1% of the total monomer, all the dispersant active calcium phosphate accounting for 1.1% of the total monomer, and deionized water 1.5 times the total monomer weight were mixed in the reactor. React at 71°C for 3 hours under conventional stirring, then raise the temperature to 95°C for aging for 1 hour; then discharge the material into the storage tank, filter it conventionally and wash it with deionized water, and then dry the obtained product at 90°C to constant weight to obtain the final Product PMMA functional copolymer resin.

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Abstract

The invention discloses PMMA copolymerized functional resin and a preparation method thereof. Methyl methacrylate, glycidyl methacrylate, auxiliaries and water are mixed, the mixture is heated for reaction, and curing is performed so as to obtain the PMMA copolymerized functional resin; specifically, an initiator and a chain transfer agent are dissolved into a monomer, a dispersing agent is added into reaction medium water, then obtained solutions are added into a reaction kettle to be mixed, and suspension polymerization is carried out; and separation, cleaning and drying are performed to obtain beaded functional copolymer microspheres. The low-temperature suspension polymerization process is adopted, so that the stability of a reaction system is improved, the gel effect is reduced; through unique formula process adjustment, the polymerization rate of the reaction system is moderate, and the suspension polymerization stability of the methyl methacrylate matrix functional copolymer resin is greatly improved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a PMMA copolymerization functional resin and a preparation method thereof, in particular to a binary copolymerization resin formed by copolymerization of methyl methacrylate monomer and glycidyl methacrylate monomer. Resin and its preparation process. Background technique [0002] Polymethyl methacrylate (PMMA), also known as acrylic or plexiglass, is a transparent material with superior properties. PMMA is also a very beautiful material with good processing performance and is widely used in aviation, construction, optical instruments, medical consumables and other fields. However, due to the poor impact resistance of PMMA, in some applications, PMMA needs to be blended with other materials, such as PC, ABS, etc. for modification. Since PMMA is incompatible with most polymers, direct blending modification is difficult to improve their mechanical properties or appearan...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F220/32C08F2/38C08F2/18
CPCC08F220/14C08F2/38C08F2/18C08F220/325
Inventor 朱从山段浩
Owner FINE BLEND POLYMER SHANGHAI CO LTD
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