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Carbon nano tube/thermosetting resin composite material and preparation method thereof

A resin composite material, carbon nanotube technology, applied in the direction of fibrous filler, dyed organosilicon compound treatment, etc., can solve the problems of poor performance of modified resin, poor preparation process of modified resin, etc., to achieve good flame retardancy, The effect of improving toughness and flame retardancy

Inactive Publication Date: 2012-07-25
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the hyperbranched polysiloxane provided has a pot life, and when it is used beyond the pot life, the preparation process of the modified resin will be poor, and the performance of the modified resin obtained is not good.

Method used

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  • Carbon nano tube/thermosetting resin composite material and preparation method thereof
  • Carbon nano tube/thermosetting resin composite material and preparation method thereof
  • Carbon nano tube/thermosetting resin composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1. Synthesis of hyperbranched polysiloxane containing phosphaphenanthrene structure and amino groups

[0040] Under the conditions of anhydrous and nitrogen protection, 23.6g 3-glycidyl etheroxypropyltrimethoxysilane and 21.6g 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide After mixing evenly, add 0.45g of catalyst triphenylphosphine, add 100g of n-propanol, heat up to 95°C and keep condensing and refluxing to continue the reaction for 6 hours; after the reaction is completed, remove the solvent by distillation under reduced pressure, remove the catalyst by filtration, and carry out vacuum drying to obtain Transparent trialkoxysilane containing phosphaphenanthrene structure and hydroxyl, see the attached figure 1 .

[0041] Take all the above-mentioned trialkoxysilanes containing phosphaphenanthrene structures and hydroxyl groups, 1.8g 3-aminopropyltrimethoxysilane and 2.2g distilled water, mix evenly, heat to 50°C for 4 hours, and distill under reduced pressure to...

Embodiment 2

[0059] 1. Synthesis of Phosphophenanthrene Structure and Amino Hyperbranched Polysiloxane

[0060]Under the conditions of anhydrous and nitrogen protection, 24.6g 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane and 21.6g 9,10-dihydro-9-oxa-10-phosphorus After the heterophenanthrene-10-oxide is mixed evenly, add 1.4g of catalyst triphenylphosphine, add 100g of methanol, raise the temperature to 100°C and keep condensing and refluxing to continue the reaction for 10 hours; The catalyst was removed by filtration to obtain a transparent trialkoxysilane containing a phosphaphenanthrene structure and a hydroxyl group.

[0061] Take all the above-mentioned trialkoxysilanes containing phosphaphenanthrene structures and hydroxyl groups, 2.2g 3-aminopropyltrimethoxysilane and 2.2g distilled water, mix evenly, heat to 60°C for 7 hours, and distill under reduced pressure to obtain crude product;

[0062] After purification, filtration, vacuum distillation and vacuum drying of the crude pro...

Embodiment 3

[0068] 1. Synthesis of phosphophenanthrene structure and amino hyperbranched polysiloxane

[0069] Under the conditions of anhydrous and nitrogen protection, 24.6g 2-(3,4-epoxycyclohexanealkyl)ethyltrimethoxysilane and 21.6g 9,10-dihydro-9-oxa-10- After the phosphaphenanthrene-10-oxide is mixed evenly, add 1.3g of catalyst triphenylphosphine, add 100g of ethanol, raise the temperature to 97°C and keep condensing and refluxing to continue the reaction for 8 hours; The catalyst is removed by filtration to obtain a transparent trialkoxysilane containing a phosphaphenanthrene structure and a hydroxyl group.

[0070] Take all the above-mentioned trialkoxysilanes containing phosphaphenanthrene structures and hydroxyl groups, 17.9g 3-aminopropyltrimethoxysilane and 2.2g distilled water, mix evenly, heat to 55°C for 7 hours, and distill under reduced pressure to obtain crude product;

[0071] After purification, filtration, vacuum distillation and vacuum drying of the crude product,...

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Abstract

The invention discloses a carbon nano tube / thermosetting resin composite material and a preparation method of the carbon nano tube / thermosetting resin composite material. According to weight, 100 parts of thermosetting resin and 0.25-4 parts of surface modified carbon nano tube are mixed uniformly at a resin melting temperature, so that the carbon nano tube / thermosetting resin composite material is obtained. The surface modified carbon nano tube is as follows: hyperbranched polysiloxane containing a phosphenanthrene structure and an amino is connected on the surface of the surface modified carbon nano tube in a chemical bond manner. Based on the heat resistance of original bismaleimide resin, the prepared composite material has high toughness, high strength, low curing temperature and good flame retardance, and can be taken as a high-performance resin matrix, an adhesive, an insulated paint and the like to be widely applied to such high-tech fields as aerospace, electric products, transportation and the like. The preparation method of the composite material, provided by the invention, has the advantages of wide applicability, good environmental protection, simplicity in operation process and the like.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to a carbon nanotube / thermosetting resin composite material and a preparation method thereof. Background technique [0002] Since the discovery of carbon nanotubes (CNTs) by Iijima, an electron microscope expert of NEC Corporation in Japan in the 1990s, CNT / thermosetting resin composite materials have become a research and development hotspot in the field of materials. Compared with thermosetting resins, CNT / thermosetting resin composites generally have high strength, modulus and flame resistance; however, there is no significant difference in toughness and flame retardancy between the two, which cannot meet the requirements of modern industry for high-performance materials. Therefore, modifying CNTs so that they can endow composites with good toughness and flame retardancy is the key to preparing high-performance CNT / thermosetting resin composites. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/04C08L63/00C08L79/08C08L83/08C08G77/38C08G77/30C09C1/44C09C3/12
Inventor 梁国正张志勇顾嫒娟袁莉
Owner SUZHOU UNIV
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