Aliphatic-series hyperbranched epoxy resin and preparation method thereof

An epoxy resin and aliphatic technology, applied in the field of aliphatic hyperbranched epoxy resin and its preparation, can solve the problems of long synthetic route of hyperbranched epoxy resin, limited types of monomers, difficult structure design, etc. The effect of flexibility and chemical stability, less impurities and high product yield

Inactive Publication Date: 2018-12-21
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hyperbranched epoxy resin prepared by the two-step method has a long synthetic route, complicated process and hi

Method used

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  • Aliphatic-series hyperbranched epoxy resin and preparation method thereof
  • Aliphatic-series hyperbranched epoxy resin and preparation method thereof
  • Aliphatic-series hyperbranched epoxy resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The structural formula of the polyol compound used is

[0036]

[0037] The structural formula of the epoxy compound used is

[0038]

[0039] S1: Add 12g (0.1mol) trihydroxymethylethane and 90.6g (0.3mol) trimethylolpropane triglycidyl ether into the reactor, and add 4.17g (0.015mol) tetrabutyl chloride to it ammonium chloride. Under the protection of a helium atmosphere, the temperature was slowly raised to 120° C., and cooled after 12 hours of reaction.

[0040] S2: Add 200 mL of tetrahydrofuran to dissolve the product. After the product is completely dissolved, pour it into deionized water while stirring, and settle for 3 hours to separate layers.

[0041] S3: Take the lower layer liquid and add 10 g of anhydrous sodium sulfate, dry for 12 hours, filter, and distill the solution under reduced pressure to obtain the aliphatic hyperbranched epoxy resin.

Embodiment 2

[0043] The structural formula of the polyol compound used is

[0044]

[0045] The structural formula of the epoxy compound used is

[0046]

[0047] S1: 12 g (0.1 mol) of trihydroxymethylethane and 108 g (0.3 mol) of pentaerythritol glycidyl ether were added to a reactor, and 8.34 g (0.03 mol) of tetrabutylammonium chloride was added thereto. Under the protection of a helium atmosphere, the temperature was slowly raised to 120° C., and cooled after 12 hours of reaction.

[0048]S2: Add 200 mL of tetrahydrofuran to dissolve the product. After the product is completely dissolved, pour it into deionized water while stirring, and settle for 3 hours to separate layers.

[0049] S3: Take the lower layer liquid and add 10 g of anhydrous sodium sulfate, dry for 12 hours, filter, and distill the solution under reduced pressure to obtain the aliphatic hyperbranched epoxy resin.

Embodiment 3

[0051] The structural formula of the polyol compound used is

[0052]

[0053] The structural formula of the epoxy compound used is

[0054]

[0055] S1: 13.4 g (0.1 mol) of trihydroxymethylpropane and 36 g (0.1 mol) of pentaerythritol glycidyl ether were added to a reactor, and 0.278 g (0.001 mol) of tetrabutylammonium chloride was added thereto. Under the protection of a helium atmosphere, the temperature was slowly raised to 150° C., and cooled after 8 hours of reaction.

[0056] S2: Add 100 mL of tetrahydrofuran to dissolve the product. After the product is completely dissolved, pour it into deionized water while stirring, and settle for 3 hours to separate layers.

[0057] S3: Take the lower layer liquid and add 5 g of anhydrous sodium sulfate, dry for 12 hours, filter, and distill the solution under reduced pressure to obtain the aliphatic hyperbranched epoxy resin.

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PUM

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Abstract

The invention discloses aliphatic-series hyperbranched epoxy resin and a preparation method thereof. According to the aliphatic-series hyperbranched epoxy resin disclosed by the invention, polyalcoholcompound and epoxy compound are utilized as monomer; the aliphatic-series hyperbranched epoxy resin is prepared by mass polymerization, proton transfer and a one-step method. An epoxy value of the aliphatic-series hyperbranched epoxy resin disclosed by the invention is 0.2 to 0.3 mol/100g, the weight-average molecular weight is 3,000 to 6,000 g/mol, and a branching degree is 0.3 to 0.6. An innercore of the aliphatic-series hyperbranched epoxy resin contains a lot of hydroxyls, and the outer end contains epoxy functional groups. The aliphatic-series hyperbranched epoxy resin disclosed by theinvention can serve as a modifier to further improve performance of high molecular materials. The aliphatic-series hyperbranched epoxy resin disclosed by the invention has the advantages of simple technology, high product purity, high yield and no complex purification operation.

Description

technical field [0001] The invention relates to the technical field of resin synthesis, more specifically, to an aliphatic hyperbranched epoxy resin and a preparation method thereof. Background technique [0002] High-performance thermosetting resin is currently the most widely used matrix of advanced composite materials. Its composite materials have become high-tech materials in development due to their light weight, high specific strength, high specific modulus, high resistance and strong material performance designability. One, its application in the aviation and aerospace industry also shows unique advantages and potentials, and it is an important symbol of the technological progress of aviation and aerospace materials. With the increase in the usage of thermosetting resin-based composite materials, its disadvantages are gradually revealed. The biggest problem is high brittleness, low impact strength and easy cracking. These shortcomings greatly limit the promotion and ...

Claims

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Application Information

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IPC IPC(8): C08G59/02C08L77/04C08L63/00
CPCC08G59/02C08L77/04C08L63/00
Inventor 靳奇峰冯培勇吴毅超刘跃军
Owner HUNAN UNIV OF TECH
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