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Winding moulding fiber-reinforced polyimide resin prepreg tape and preparation method and application thereof

A technology of polyimide resin and polyimide, which is applied in fiber-reinforced polyimide resin prepreg tape for winding molding and its preparation and application field, to achieve excellent heat resistance, low solvent residue, and improved melting The effect of mobility

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

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Problems solved by technology

But do not see any relevant reports about the preparation method of fiber-reinforced polyimide resin prepreg tape

Method used

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  • Winding moulding fiber-reinforced polyimide resin prepreg tape and preparation method and application thereof
  • Winding moulding fiber-reinforced polyimide resin prepreg tape and preparation method and application thereof
  • Winding moulding fiber-reinforced polyimide resin prepreg tape and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] In a three-neck round bottom flask equipped with mechanical stirring, water separator, nitrogen inlet and outlet, and thermometer, add 35.90 g (0.08 mole) of 1,4-bis(4'-amino-2'-trifluoromethylphenoxy) Benzene (6FAPB), 16.78 g (0.08 mol) of 4,4'-diaminodiphenyl ether (4,4'-ODA) and 241.17 ml of N-methylpyrrolidone (NMP), stirred until completely dissolved under nitrogen protection , add 43.43 g (0.15 mole) of 2,3,3',4'-biphenyltetralic acid dianhydride (α-BPDA) and 9.93 g (0.04 mole) of 4-phenylethynylphthalic anhydride (PEPA), and stir until completely dissolved , to obtain a homogeneous solution with a solid content of 30wt.%. 18 milliliters of toluene was added in the above-mentioned homogeneous solution, and the reaction system was warmed up to 180° C. after reacting for 10 hours, the toluene was evaporated, and the heating was stopped. The reaction solution was cooled to 80°C and then poured into ethanol, the precipitated fibrous crude product was collected, washe...

Embodiment 2

[0055] In a three-neck round bottom flask equipped with mechanical stirring, water separator, nitrogen inlet and outlet, and thermometer, add 130.78 grams (0.31 moles) of 1,4-bis(4'-amino-2'-trifluoromethylphenoxy)benzene (6FAPB), 30.57 g (0.15 mol) of 3,4'-diaminodiphenyl ether (3,4'-ODA) and 501 ml of N-methylpyrrolidone (NMP), stirred under nitrogen until completely dissolved, Add 105.33 grams (0.36 moles) of 2,3,3',4'-biphenyltetralic acid dianhydride (α-BPDA) and 49.65 grams (0.20 moles) of 4-phenylethynylphthalic anhydride (PEPA), stir until completely dissolved, A homogeneous solution with a solid content of 30 wt.% was obtained. 40 milliliters of toluene was added in the above-mentioned homogeneous solution, and the reaction system was warmed up to 180° C. after 12 hours of reaction, the toluene was evaporated, and the heating was stopped. Cool the reaction solution to about 60°C and pour it into the mixture of ethanol and water (the mixing volume ratio is 2:1), colle...

Embodiment 3

[0059] In a three-neck round bottom flask equipped with mechanical stirring, water separator, nitrogen inlet and outlet, and thermometer, add 86.41 g (0.27 moles) of 4,4'-diamino-2,2'-bistrifluoromethylbiphenyl (TFDB) , 54.03 g (0.27 mol) of 4,4'-diaminodiphenyl ether (4,4'-ODA) and 740 ml of N-methylpyrrolidone (NMP), stirred under nitrogen protection until completely dissolved, then added 129.36 g (0.44 mol) 2,3,3',4'-biphenyltetraacid dianhydride (α-BPDA) and 49.65 g (0.20 mol) 4-phenylethynylphthalic anhydride (PEPA), stirred until all dissolved to obtain solid content It is a homogeneous solution of 30wt.%. 70 milliliters of toluene was added in the above-mentioned homogeneous solution, and the reaction system was warmed up to 180° C. after reacting for 12 hours, the toluene was evaporated, and the heating was stopped. Cool the reaction liquid to 60°C and pour it into the mixture of methanol and water (the mixing volume ratio is 1:1), collect the precipitated fibrous cru...

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Abstract

The invention discloses a winding moulding fiber-reinforced polyimide resin prepreg tape and a preparation method and application thereof. The structure of polyimide resin prepared into the prepreg tape is shown as a formula I; and the polyimide resin is good in solubility and melt fluidity and excellent in heat resistance after being cured at the temperature of 370 DEG C, has a glass transition temperature of more than or equal to 300 DEG C and has good mechanical properties. A polyimide resin solution is used for directly impregnating and reinforcing a fiber, and after a heat drying process in air and removal of a solvent, the prepreg tape with uniform glue quantity and low residual solvent content (lower than or equal to 1%) can be obtained. The prepreg tape is simple in preparation process and convenient to store and transport; and a winding moulding composite material prepared from the prepreg tape has excellent mechanical properties and can be applied to manufacturing of composite material cylinders, pressure containers, storage tanks, pipes, fan blades and other high-temperature-resistant structural components.

Description

technical field [0001] The invention relates to a fiber-reinforced polyimide resin prepreg tape for winding molding, a preparation method and application thereof. Background technique [0002] Winding molding is an important molding process for manufacturing resin-based composite products. The composite material products obtained by the winding molding process not only have the common advantages of composite materials such as high specific strength, high specific modulus, fatigue resistance, and good shock absorption performance, but also because the directional strength ratio of the winding structure can be mechanically designed according to requirements, so It can give full play to the characteristics of high tensile strength of the reinforced fiber. This molding process is easy to realize automatic continuous production and the product does not need mechanical processing, so the production efficiency is high. Therefore, in recent years, winding molding technology has be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/12C08L79/08B29C53/56
Inventor 范琳吴方栩杨士勇莫松
Owner INST OF CHEM CHINESE ACAD OF SCI
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