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Preparation method of polymethyl-methacrylate-based compatilizer

The technology of polymethyl methacrylate and hydroxyl-terminated polyacrylate is applied in the field of preparation based on polymethyl methacrylate compatibilizer, can solve the problems of low grafting rate and the like, and achieves simple preparation method and grafting density. Adjustable, chain-length controllable effects

Active Publication Date: 2016-09-28
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, patent CN 103073838A introduces a preparation method of compatibilizer, which is compounded by ABS grafted maleic anhydride and SEBS grafted maleic anhydride, but this method has the disadvantage of low grafting rate

Method used

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  • Preparation method of polymethyl-methacrylate-based compatilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Preparation of hydroxyl-terminated polymethylacrylate (design molecular weight 1000)

[0021] Add 20.00g (0.2323mol) of methyl acrylate, 4.7884g (20.026mmol) of initiator α-bromoisobutyrate 4.7884g (20.026mmol) of methyl acrylate, CuBr 2 0.02082g (0.09293mmol) and pentamethyldivinyltriamine PMDETA 0.3221g (1.8585mmol), reducing agent stannous octoate Sn (EH) 2 0.7529g (1.8585mmol) and 10.00g of solvent toluene, after mixing evenly, blow nitrogen gas, react in 70°C oil bath for 210min, stop the reaction after the conversion rate reaches 81%, the product passes through the neutral alumina column, precipitates and bakes Dry and set aside.

[0022] (2) Preparation of hydroxyl-containing polymethyl methacrylate

[0023] In a 500ml reaction flask equipped with toluene, slowly dropwise add a mixed monomer solution of 80g (0.7990mol) of methyl methacrylate, 20g (0.1722mol) of hydroxyethyl acrylate and 0.5g of dibenzoyl peroxide, at 85°C After 6 hours of reaction, the t...

Embodiment 2

[0027] (1) Preparation of hydroxyl-terminated polyethylacrylate (design molecular weight 3000)

[0028] Add 20.00 g (0.1998 mol) of ethyl acrylate, 1.5941 g (6.6667 mmol) of initiator α-bromoisobutyrate 1.5941 g (6.6667 mmol) of ethyl acrylate, CuBr 2 0.01790g (0.0799mmol) and PMDETA 0.2759g (1.5981mmol), reducing agent Sn(EH) 2 Mix 0.6474g (1.5981mmol) and toluene 10g, mix well and then bubble with nitrogen, react in an oil bath at 75°C for 255min, stop when the conversion rate reaches 86%, pass the product through a neutral alumina column, precipitate with methanol, and dry .

[0029] (2) Preparation of hydroxyl-containing polymethyl methacrylate

[0030] In a 500ml reaction flask equipped with toluene, slowly dropwise add a mixed monomer solution of 80g (0.7990mol) of methyl methacrylate, 5g (0.04306mol) of hydroxyethyl acrylate and 0.255g of dibenzoyl peroxide, at 85°C After 6 hours of reaction, the temperature was lowered and the material was discharged, and the prod...

Embodiment 3

[0034] (1) Preparation of hydroxyl-terminated polybutylacrylate (design molecular weight 5000)

[0035] Add 20.00 g (0.1560 mol) of butyl acrylate, 0.9564 g (4.000 mmol) of initiator α-bromoisobutyrate 0.9564 g (4.000 mmol) of butyl acrylate, CuBr 2 0.01398g (0.06242mmol) and PMDETA 0.2163g (1.2483mmol), reducing agent Sn(EH) 2 0.5057g (1.2483mmol) and 15g of toluene, mixed evenly, nitrogen bubbling, reacted in an oil bath at 80°C for 215min, stopped when the conversion rate reached 85%, and the product passed through a neutral alumina column and dried with methanol precipitation.

[0036] (2) Preparation of hydroxyl-containing polymethyl methacrylate

[0037]In a 500ml reaction flask equipped with toluene, slowly dropwise add a mixed monomer solution of 80g (0.7990mol) of methyl methacrylate, 15g (0.1292mol) of hydroxyethyl acrylate and 0.285g of dibenzoyl peroxide, at 85°C After 7 hours of reaction, the temperature was lowered and the material was discharged, and the pro...

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Abstract

The invention relates to a preparation method of a polymethyl-methacrylate-based compatilizer. The method comprises the following steps: preparation of hydroxyl-terminated polyacrylate, preparation of hydroxy-containing polymethyl methacrylate, and preparation of polymethyl methacrylate-g-polyacrylate compatilizer. The preparation method provided by the invention is simpler, and has the advantages of controllable grafted chain length and adjustable grafting density.

Description

technical field [0001] The invention belongs to the field of polymer materials and relates to a preparation method based on a polymethyl methacrylate compatibilizer. Background technique [0002] Compatibilizer, also known as compatibilizer, refers to the combination of two incompatible polymers (generally materials with a large difference in polarity) by means of the bonding force between molecules, and then a stable blend is obtained. additives. A compatibilizer can be understood as a surfactant in thermodynamics. When a compatibilizer is added to an incompatible polymer system and mixed and kneaded at a certain temperature, the compatibilizer will be confined between the two polymers. On the interface between them, it plays the role of reducing interfacial tension, increasing the thickness of the interface layer, and reducing the size of dispersed particles, so that the system finally forms a thermodynamically stable phase structure with macroscopic and uniform microscop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/75C08G18/62C08F120/14C08F220/14C08F220/28C08F120/18
CPCC08F120/14C08F120/18C08F220/14C08G18/6225C08G18/6229C08G18/6245C08G18/755C08F220/281
Inventor 谢国舒徐慧陆安红姚小桐杨志成孟志伟李坚刘新
Owner CHANGZHOU UNIV
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