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High-toughness epoxy-resin nanocomposite composition and preparation method thereof

A nano-composite material and epoxy resin technology, applied in the direction of fatty acid production, fatty acid chemical modification, etc., to achieve the effects of improving machinability, toughness, and mechanical strength

Inactive Publication Date: 2013-07-03
JILIN INST OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no literature report on the preparation of high-toughness epoxy resin nanocomposites using epoxy vegetable oil and nano-inorganic modified epoxy resin

Method used

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  • High-toughness epoxy-resin nanocomposite composition and preparation method thereof
  • High-toughness epoxy-resin nanocomposite composition and preparation method thereof
  • High-toughness epoxy-resin nanocomposite composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Castor oil (industrial product, Beihai Cereals and Oils Industry Co., Ltd.): glacial acetic acid (analytical pure, Tianjin Damao Chemical Reagent Company)=1.0: 2.5 is added to reactor in molar ratio, then add catalyst ion exchange resin (analytical pure, Tianjin Regent Co., Ltd.) and solvent toluene (analytical grade, Tianjin Damao Chemical Reagent Co., Ltd.), stirred and heated up to 45°C, dripped hydrogen peroxide (analytical grade, Yantai Shuangshuang Chemical Co., Ltd.), heated up to 55°C, and reacted for 7 hours . Wash the upper oil layer with 5% sodium bicarbonate (analytical grade, Tianjin Damao Chemical Reagent Co., Ltd.) aqueous solution and deionized water, and distill under reduced pressure to obtain epoxy castor oil.

[0028] Pyrazine (analytical pure, Alfa Aisha Chemical Co., Ltd.): benzyl bromide (analytical pure, Sinopharm Chemical Reagent Co., Ltd.)=1.0: 1.1 is added to the reactor in molar ratio, and then solvent acetonitrile (analytical pure, Tianjin, ...

Embodiment 2

[0032] Except that castor oil is changed into soybean oil, and nano-clay is changed into nano-calcium carbonate, all the other are the same as embodiment 1. The components and test results of epoxy resin nanocomposites are shown in Table 1.

Embodiment 3

[0034] Except changing castor oil into sunflower oil, nano clay into nano aluminum oxide, all the other are the same as embodiment 1. The components and test results of epoxy resin nanocomposites are shown in Table 1.

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Abstract

The invention discloses a high-toughness epoxy-resin nanocomposite composition and a preparation method thereof. The preparation method comprises the following steps: step 1, synthesizing epoxidized vegetable oil because epoxidized vegetable oil has a flexible molecular structure and is beneficial for improving impact strength of an epoxy resin; step 2, synthesizing a thermal polymerization initiator, i.e., benzylpyrazine hexafluoroantimonate or benzylquinoxaline hexafluoroantimonate, so as to overcome the disadvantage of a slow curing speed of epoxidized vegetable oil; and step 3, with epoxidized vegetable oil as a flexibilizer and a nanometer inorganic substance as a reinforcing agent, modifying the epoxy resin to prepare the epoxy-resin nanocomposite composition, which enables impact strength of the epoxy resin to be substantially improved. The epoxy-resin nanocomposite composition maintains good rigidity, thermostability and modulus and is applicable to the field of high and new technologies needing high impact strength. Furthermore, the problem of increase of viscosity due to addition of the inorganic substance is overcome through usage of low-viscosity epoxidized vegetable oil, so machinable properties of the epoxy-resin nanocomposite composition are improved.

Description

technical field [0001] The invention relates to a method for modifying epoxy resin with epoxy vegetable oil and nano-inorganic substances, and more specifically relates to a high-toughness epoxy resin nanocomposite material composition and a preparation method thereof. Background technique [0002] Epoxy resin has the advantages of excellent adhesion, corrosion resistance, chemical resistance, heat and cold resistance, electrical insulation performance and low shrinkage, and is widely used in coating substrates, electronics, electrical packaging, pipelines and civil engineering Materials, adhesives and other fields. Due to the high cross-linking density of cured epoxy resin, it has the disadvantage of not being impact-resistant, which largely limits its application in some high-tech fields. [0003] Initially, liquid rubber such as carboxyl-terminated nitrile rubber and amino-terminated nitrile rubber (CN87100265) was added to the epoxy resin as a toughening agent, which ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K13/02C08K5/1515C08K3/34C08K3/26C08K3/22C08K13/04C08K7/00C08K3/04C08K3/14C11C3/00
Inventor 金范龙张启忠徐洪军王毅坚朴秀进
Owner JILIN INST OF CHEM TECH
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