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Polymer system and preparation method thereof

A technology of polymers and polymer materials, applied in the field of polymer materials, can solve the problems of difficult regulation of the glass transition temperature of polymers and the inability to adapt to the needs of many occasions, and achieves the effects of good mechanical properties and easy shaping.

Active Publication Date: 2019-01-18
SHENZHEN LEBOND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, provide a polymer system and its preparation method, aiming to solve the technical problem that the glass transition temperature of the existing polymer is difficult to control, so that it cannot meet the needs of many occasions

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  • Polymer system and preparation method thereof
  • Polymer system and preparation method thereof

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preparation example Construction

[0022] Another aspect of the present invention provides a method for preparing the above-mentioned polymer system, comprising the following steps:

[0023] In the polymer system provided by the embodiment of the present invention, the polyol and the boron crosslinking agent form a boron ester bond, and the entire network structure of the polymer system is constructed through the boron ester bond, and the bond exchange temperature of the boron ester bond is relatively low , and the pH regulator can make the borate bond more stable. By selecting polyols, the temperature at which the borate bond can be exchanged can be determined and regulated. The plasticizing temperature is the borate bond in the polymer system. The temperature of the exchange; at the same time, the glass transition temperature of the polymer system is provided by the polyol part, and the control of the glass transition temperature can be easily realized through different types of organic substances. The glass ...

Embodiment 1

[0040] A polymer system, the raw materials are as follows:

[0041] a) p-(2,3-epoxypropyloxy)-N,N-bis(2,3-epoxypropyl)aniline, Sigma-Aldrich Company; the structural formula is as follows:

[0042]

[0043] b) 3-mercapto-1,2-propanediol, TCI company; the structural formula is as follows:

[0044]

[0045] c) trimethyl borate, TCI company; Structure is as follows:

[0046]

[0047] d) 1,8-diazabicyclo[5.4.0]undec-7-ene: TCI Company; the structural formula is as follows:

[0048]

[0049] Preparation:

[0050] Weigh 10.82 mmol of 3-mercapto-1,2-propanediol and 5.41 mmol of trimethyl borate, and stir until they are evenly mixed. Under cooling in a water bath, 3.69 mmol of 1,8-diazabicyclo[5.4.0]undec-7-ene was added and stirred evenly. Add 3.61 mmol of p-(2,3-epoxypropyloxy)-N,N-bis(2,3-epoxypropyl)aniline, stir it by magnetic force at 50°C, and seal the reaction for 1 hour. Pour it into an aluminum pan, react in an oven at 80°C for 8 hours, and dry it in a vacuum...

Embodiment 2

[0053] A polymer system, the raw materials are as follows:

[0054] a) p-(2,3-epoxypropyloxy)-N,N-bis(2,3-epoxypropyl)aniline, Sigma-Aldrich;

[0055] b) Bisphenol A diglycidyl ether, Sigma-Aldrich company; Structural formula is as follows:

[0056]

[0057] c) 3-mercapto-1,2-propanediol, TCI company;

[0058] d) trimethyl borate, TCI company;

[0059] e) 1,8-diazabicyclo[5.4.0]undec-7-ene, TCI Company;

[0060] Preparation:

[0061] Weigh 7.45 mmol of 3-mercapto-1,2-propanediol and 3.72 mmol of trimethyl borate, and stir until they are evenly mixed. Under cooling in a water bath, 2.54 mmol of 1,8-diazabicyclo[5.4.0]undec-7-ene was added and stirred evenly. Add 1.19mmol of p-(2,3-epoxypropyloxy)-N,N-bis(2,3-epoxypropyl)aniline and 1.94mmol of bisphenol A diglycidyl ether, at 50°C The reaction was sealed for 1 hour by magnetic stirring. Pour it into an aluminum pan, react in an oven at 80°C for 8 hours, and dry it in a vacuum oven at 120°C for 0.5 hour to obtain the p...

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Abstract

The invention belongs to the technical field of polymer materials and particularly relates to a polymer system and a preparation method thereof. The polymer system comprises polyol, a boron-containingcrosslinking agent and a pH regulator, wherein polyol contains at least two diol structural fragments, one boron atom in the boron-containing crosslinking agent directly bonds with one carbon atom atmost, and borate bonds are formed by the diol structural fragments in polyol and boron in the boron-containing crosslinking agent; glass-transition temperature of the polymer system is higher than plasticizing temperature. The polymer system can meet use requirements of different occasions because the glass-transition temperature of the polymer system can be adjusted in a larger range by polyol.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a polymer system and a preparation method thereof. Background technique [0002] Organic polymer materials, also known as polymers or high polymers, are a class of macromolecules with multiple repeating monomer units that are covalently bonded by one or several molecules or molecular groups (structural units or monomers); They can be natural products such as fibers, proteins and natural rubber, etc., or they can be made by synthetic methods, such as synthetic rubber, synthetic resin, synthetic fiber and other non-biological polymers. [0003] The plasticizing temperature of the polymer is the temperature at which the reversible bonds in the polymer undergo bond exchange, which provides feasibility for the shaping of the polymer. The glass transition temperature of the polymer is used to achieve the shape fixation of the polymer. When it is lower than this te...

Claims

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Application Information

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IPC IPC(8): C08G59/32C08G59/40C08G59/66C08G59/24C08K5/3465
CPCC08G59/245C08G59/3218C08G59/4078C08G59/66C08K5/3465
Inventor 黄拔梓谢涛赵赛
Owner SHENZHEN LEBOND TECH CO LTD
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