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Preparation method of epoxidized 1, 2-polybutadiene

A technology of polybutadiene and epoxidation, which is applied in the field of preparation of epoxidized 1,2-polybutadiene, and can solve problems such as unseen technical indicators of polybutadiene

Inactive Publication Date: 2014-03-26
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the epoxidation modification of high molecular weight, syndiotactic and unterminated polybutadiene, and there is no report on the technical indicators of the modified polybutadiene

Method used

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  • Preparation method of epoxidized 1, 2-polybutadiene
  • Preparation method of epoxidized 1, 2-polybutadiene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Put 15g of polybutadiene and 200ml of cyclohexane into a 500ml three-necked bottle, and wait until the polybutadiene is completely dissolved at 65°C, slowly add 3.2g of formic acid and 0.6g of polyethylene glycol into the system, after the dropwise addition is completed Reflect for another 0.5 hours, slowly add 3.2g of hydrogen peroxide dropwise into the system within 20 minutes, continue the reaction at constant temperature for 2 hours, after the reaction is completed, pour out the product, add absolute ethanol to precipitate the solid, and settle for a period of time , filtered with suction, washed the product solid several times with sodium bicarbonate solution and distilled water, and put it into an oven at 60°C for 12 hours in vacuum to obtain a white tough product.

Embodiment 2

[0021] Put 15g of polybutadiene and 200ml of cyclohexane into a 500ml three-necked bottle, and wait until the polybutadiene is completely dissolved at 65°C, slowly add 1.8 formic acid and 0.3g of polyethylene glycol into the system, and then After 0.5 hours of reaction, slowly add 1.8g of hydrogen peroxide dropwise into the system within 20 minutes, and continue to react for 2 hours at a constant temperature. Suction filter, wash the product solid several times with sodium bicarbonate solution and distilled water, put it into an oven at 60°C for 12 hours in vacuum to obtain a white tough product.

Embodiment 3

[0023] Put 10g of polybutadiene and 150ml of cyclohexane into a 500ml three-necked bottle, and wait until the polybutadiene is completely dissolved at 65°C, slowly add 3.2 formic acid and 0.6g of polyethylene glycol into the system, and then After 0.5 hours of reaction, 3.2g of hydrogen peroxide was slowly added dropwise to the system within 20 minutes, and the reaction was continued for 2 hours at a constant temperature. Suction filter, wash the product solid several times with sodium bicarbonate solution and distilled water, put it into an oven at 60°C for 12 hours in vacuum to obtain a white tough product.

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Abstract

The invention relates to a preparation method of a polymeric material, in particular to a preparation method of epoxidized 1, 2-polybutadiene. Preparation steps of the preparation method are as follows: composition A and composition B are added to a reaction flask and stirred by magnetic force at the temperature of 65 DEG C until the composition A is dissolved; composition C and composition D are added to the reaction flask and stirred fully and uniformly; quantitative composition E is added to a system and reacted for a period at the constant temperature; after the reaction is finished, a product is poured out; absolute ethyl alcohol is added for precipitating a solid, sedimentation is performed for a period, suction filtration is performed, and a sodium bicarbonate solution and distilled water are used for washing a product solid for a plurality of times respectively; and the washed product solid is put into an oven for vacuum drying for 12 h at the temperature of 60 DEG C, and a product is obtained. The invention provides a synthesis method for epoxidizing 1, 2-polybutadiene. The prepared epoxidized 1, 2-polybutadiene can be used for toughening modification of other high polymer materials (such as nylon, epoxy resin and the like).

Description

technical field [0001] The invention relates to a preparation method of a polymer material, in particular to a preparation method of epoxidized 1,2-polybutadiene. Background technique [0002] Polybutadiene is a commonly used and important polymer material. Due to the presence of reactive double bonds or functional groups in the molecule or in the branch chain, it can be widely used in coatings, adhesives, cast rubber products, caulking materials, Rubber processing aids and other fields have been applied, especially since the successful application in space rocket solid fuel propellants in the 1960s and 1970s, they have developed rapidly and become an important category of polymers. However, since the molecular chain of 1,2-polybutadiene is a simple carbon chain structure without polar groups, its scope of application is limited to a certain extent. In order to further improve the performance of 1,2-polybutadiene and broaden its application fields, its chemical modifica...

Claims

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Application Information

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IPC IPC(8): C08F136/06C08F8/08
Inventor 何晓峰王帅葛铁军黄鑫龙
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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