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Comb-shaped stem grafting copolymer containing reactive group and preparation method and application thereof

A technology of graft copolymers and reactive groups, which is applied in the field of comb-shaped polymethyl (meth)acrylate and its preparation, and can solve the problems of low compatibilization efficiency and large addition amount

Active Publication Date: 2013-12-04
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these categories can improve the compatibility of incompatible blend systems to a certain extent, they also have defects such as being only applicable to a specific blend system, adding too much, and low compatibilization efficiency.

Method used

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  • Comb-shaped stem grafting copolymer containing reactive group and preparation method and application thereof
  • Comb-shaped stem grafting copolymer containing reactive group and preparation method and application thereof
  • Comb-shaped stem grafting copolymer containing reactive group and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0079] Under nitrogen atmosphere, 100g methyl methacrylate, 4g mercaptoacetic acid, 2.8g as the polymerization initiator 4,4'-azobis (4-cyanovaleric acid) and 100g as the toluene of solvent mix homogeneously, will The temperature of the reactor was raised to 70° C. for 5 hours. Then 0.06 g of hydroquinone as a polymerization inhibitor and 0.07 g of N,N-dimethylbenzylamine as a catalyst were added. The temperature of the reactor was raised to 100°C and stirred for 30 minutes. Add 10 grams of glycidyl methacrylate, then react at reflux temperature for 10 hours, remove the solvent under reduced pressure to obtain macromonomer A, denoted as M1-2000, and the molecular weight of macromolecular monomer A is 2000.

Embodiment 1-2

[0081] In embodiment 1-1, the content of mercaptoacetic acid as chain transfer agent is replaced by 2g, the content of hydroquinone as polymerization inhibitor is replaced by 0.03g, the N,N-dimethylbenzylamine as catalyst The content was replaced by 0.04g, glycidyl methacrylate was changed to 4 grams, other experimental conditions were consistent with Example 1, and macromonomer A was prepared, which was denoted as M1-6000, and the molecular weight of macromonomer A was 6000.

Embodiment 1-3

[0083] In embodiment 1-1, the content of mercaptoacetic acid as chain transfer agent is replaced by 1.5 grams, and the content of hydroquinone as polymerization inhibitor is replaced by 0.02 grams, and the N,N-dimethylbenzylamine as catalyst The content was replaced by 0.03 grams, and the glycidyl methacrylate was changed to 2.5 grams. Other experimental conditions were consistent with Example 1, and macromonomer A was prepared, which was denoted as M1-10000. The molecular weight of macromonomer A was 10000.

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Abstract

The invention discloses a comb-shaped stem grafting copolymer containing reactive group and a preparation method and application thereof. The copolymer is a comb-shaped stem grafting copolymer by taking small molecule monomer B as the main chain, and giant molecule monomer A as the side chain. According to the method, the giant molecule monomer A and the small molecule monomer B are copolymerized to form the comb-shaped stem grafting copolymer of which the main chain is the small molecule monomer B and the side chain is the giant molecule monomer A. The comb-shaped stem grafting copolymer disclosed by the invention can serve as the chain extender of a polymer or a polymer blend, the compatibilizer of the polymer blend, the hydrolytic stabilizer, adhesive and anti-leakage agent of the polymer blend, and is used for coatings of wood, metal or plastic. The reactive group in the copolymer has very high reaction activity, and can react with various end groups of polyamide and polyester. Methacrylate monomers have thermodynamics compatibility with various polymers. The reactive group can react with the end hydroxyl group or the end carboxy group of polyester, so that the comb-shaped stem grafting copolymer can serve as the chain extender, and the processing and application properties of the material are improved.

Description

technical field [0001] The invention belongs to the field of polymer materials, and relates to a comb-shaped graft copolymer containing reactive groups and its preparation method and application, in particular to a comb-shaped poly(meth)acrylate containing reactive groups and its Preparation methods and applications. Background technique [0002] Polymer alloying is the most effective method to prepare new polymer materials. It has the following advantages: (1) It can effectively improve the heat resistance and mechanical strength of plastics; (2) The development cycle is short; (3) The raw materials used are usually old polymers with mature technology and well-known properties. However, unlike low-molecular compounds, most high-molecular compounds are incompatible systems that are difficult to mix, which leads to macroscopic phase separation of the mixture, poor interface adhesion, low stress transfer efficiency, and even low physical and mechanical properties. Due to pro...

Claims

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Application Information

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IPC IPC(8): C08F290/04C08F220/14C08F2/38C08L51/00
Inventor 李勇进董文勇王亨缇
Owner HANGZHOU NORMAL UNIVERSITY
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