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Fiber/long-carbon-chain nylon in-situ composite material and preparation method

An in-situ composite material and long carbon chain technology, which is applied in the field of fiber composite materials to achieve the effects of improved interfacial adhesion, excellent strength and improved dispersion.

Active Publication Date: 2012-10-03
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on long carbon chain nylon / fiber in-situ composite materials has not been reported yet. The present invention provides a simple method to improve the long carbon chain nylon by in situ composite of long carbon chain nylon and high-performance fibers. toughness and strength

Method used

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  • Fiber/long-carbon-chain nylon in-situ composite material and preparation method
  • Fiber/long-carbon-chain nylon in-situ composite material and preparation method
  • Fiber/long-carbon-chain nylon in-situ composite material and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0041] 1. Preparation of nylon 1012 salt: weigh 1Kg of dodecanedibasic acid, 4Kg of 99.5% ethanol, and mix to obtain an ethanol solution of dodecanedibasic acid; weigh 0.96Kg of decanediamine, 1Kg of 99.9% ethanol, and mix to prepare Obtain the ethanol solution of decanediamine; heat the obtained ethanol solution of dodecanedibasic acid to 35°C, and then add it dropwise into the stirred reactor containing the ethanol solution of decanediamine, and the dropping time is 20 minutes Put it into an ice-water bath after standing still for 15 minutes, collect the precipitated suspended matter, wash with ethanol to obtain nylon 1012 salt, and dry it in a vacuum oven for 48 hours;

[0042] 2. Fiber pretreatment: take aramid staple fiber (produced in Japan, model 968) with a length of 1 mm and a diameter of 13 μm, soak it in acetone for 3 hours, take it out and dry it in vacuum at 80°C for 12 hours;

[0043] 3. Polycondensation reaction: 95 parts by weight of nylon 1012 salt and 5 parts...

Embodiment 2

[0045] 1. Preparation of nylon 1010 salt: Weigh 1Kg of sebacic acid and 4Kg of 99.9% ethanol, and mix them to obtain an ethanol solution of sebacic acid. Weigh 0.96Kg of decanediamine, 1Kg of 99.9% ethanol, and mix to obtain an ethanol solution of decanediamine; heat the obtained ethanol solution of sebacic acid to 35° C., and then add it dropwise to a stirred tank containing decanediamine ethanol In the reactor of the solution, the dripping time is 20 minutes; after standing for 15 minutes, put it into an ice-water bath, collect the precipitated suspended matter, obtain nylon 1010 salt, and dry it in a vacuum oven for 48 hours;

[0046] 2. Fiber pretreatment: take aramid staple fiber (produced in Japan, model 968) with a length of 1 mm and a diameter of 13 μm, soak it in acetone for 3 hours, take it out and dry it in vacuum at 80°C for 12 hours;

[0047] 3. Polycondensation reaction: 91 parts by weight of nylon 1010 salt and 9 parts by weight of aramid fiber were mixed in a h...

Embodiment 3

[0049] 1. Preparation of nylon 1012 salt: Weigh 1 Kg of dodecanedibasic acid and 4 Kg of 99.9% ethanol, and mix them to obtain an ethanol solution of dodecanedibasic acid. Weigh 0.96Kg of decanediamine and 1Kg of 99.9% ethanol, and mix them to obtain an ethanol solution of decanediamine. Heat the ethanol solution of dodecanedibasic acid to 35°C, then add it dropwise into a stirred reactor containing ethanol solution of decanediamine, and the adding time is 20 minutes; after standing for 15 minutes, put it in ice In a water bath, the precipitated suspended matter was collected to obtain nylon 1012 salt, and dried in a vacuum oven for 48 hours;

[0050] 2. Fiber pretreatment: take aramid staple fiber (produced in Japan, model 968) with a length of 1 mm and a diameter of 13 μm, soak it in acetone for 3 hours, take it out and dry it in vacuum at 80°C for 12 hours;

[0051] 3. Polycondensation reaction: 88 parts by weight of nylon 1012 salt and 12 parts by weight of aramid fiber w...

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Abstract

The invention relates to a fiber composite material, and particularly relates to a fiber / long-carbon-chain nylon in-situ composite material and a preparation method. The fiber / long-carbon-chain nylon in-situ composite material comprises the components: 1-20wt% of high-performance fiber and 80-99wt% of long-carbon-chain nylon salt, preferably 5-16wt% of high-performance fiber and 84-95wt% of long-carbon-chain nylon salt, wherein the high-performance fiber is selected from at least one of aramid fiber, carbon fiber and fiberglass. The preparing process is simple; and the strength and toughness of the prepared fiber / long-carbon-chain nylon composite material are significantly improved as compared with those of the pure long-carbon-chain nylon prepared by the same process.

Description

technical field [0001] The invention relates to a fiber composite material, in particular to a fiber / long carbon chain nylon in-situ composite material and a preparation method thereof. Background technique [0002] Nylon, or polyamide, is a semi-crystalline polymer with amide groups as repeating chain structures. Generally speaking, it has good comprehensive performance and relatively low price. Nylon 6 and nylon 66 are the main types of nylon products, but the diverse formulations of nylon itself make nylon materials capable of meeting various special requirements. As the density of amide groups decreases, the melting point of nylon gradually decreases, and the molecular chain changes from hydrophilic to hydrophobic. When the number of carbon atoms between the nitrogen of the amide bond is greater than ten, it can be called long carbon chain nylon. At present, long carbon chain nylon products are mainly used in non-structural pipes, but because of its low moisture absorp...

Claims

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Application Information

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IPC IPC(8): C08L77/00C08L77/06C08L77/10C08K7/06C08K7/14C08G69/28C08J5/06
Inventor 董侠高昀鋆邢倩周勇刘国明赵莹王笃金
Owner INST OF CHEM CHINESE ACAD OF SCI
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