A preparation method of large-thickness fiber fabric prepreg for non-metallic composite materials

A technology of fiber fabrics and composite materials, which is applied in the processing of textile materials, fiber processing, textiles and papermaking, etc. It can solve the problems of not being widely used, not realizing mass production, and difficulty in resin pre-impregnation, etc., and achieves good infiltration effect , Solve the difficulty of impregnation and the effect of uniform resin infiltration

Active Publication Date: 2021-04-27
HUBEI FEILIHUA QUARTZ GLASS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, this large-thickness 2.5D fiber fabric prepreg has not been widely used due to the preparation process, difficulty in resin pre-impregnation, and uneven resin infiltration, nor has it achieved mass production.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A preparation method of large-thickness fiber fabric prepreg for non-metallic composite materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Wetting agent preparation:

[0026] According to the weight ratio of boron phenolic resin: absolute ethanol 1:0.5~1, weigh boron phenolic resin and absolute ethanol, then put the absolute ethanol into the mixing tank and preheat it, and heat up at a rate of 1~2°C / min To 55 ℃, keep warm for 30min. After the absolute ethanol is preheated, add the boron phenolic resin particles into the mixing tank, start stirring at 55°C, the stirring speed is 25r / min, and the stirring time is not less than 2h, until there is no visible suspended matter in the mixed glue; Wetting agent; wetting agent should be stored below room temperature.

[0027] Clean the surface of the dipping equipment to ensure that the equipment is operating normally and the temperature is controllable and accurate within ±1°C; and lay a layer of release paper on the surface of the equipment; cut the glass fiber fabric or quartz fiber fabric of the required size, and put Spread the fiber fabric on the release pa...

Embodiment 2

[0031] According to the weight ratio of boron phenolic resin: absolute ethanol 1:0.5~1, weigh boron phenolic resin and absolute ethanol, then put the absolute ethanol into the mixing tank and preheat it, and heat up at a rate of 1~2°C / min To 60 ℃, keep warm for 30min. After the absolute ethanol is preheated, add the boron phenolic resin particles into the mixing tank, start stirring at 60°C, the stirring speed is 30r / min, and the stirring time is not less than 2h, until there is no visible suspended matter in the mixed glue; Wetting agent; wetting agent should be stored below room temperature.

[0032] Clean the surface of the dipping equipment to ensure that the equipment is operating normally and the temperature is controllable and accurate within ±1°C; and lay a layer of release paper on the surface of the equipment; cut the glass fiber fabric or quartz fiber fabric of the required size, and put Spread the fiber fabric on the release paper on the table top of the dipping e...

Embodiment 3

[0036] According to the weight ratio of boron phenolic resin: absolute ethanol 1:0.5~1, weigh boron phenolic resin and absolute ethanol, then put the absolute ethanol into the mixing tank and preheat it, and heat up at a rate of 1~2°C / min To 65 ℃, keep warm for 30min. After the absolute ethanol is preheated, add the boron phenolic resin particles into the mixing tank, start stirring at 65°C, the stirring speed is 35r / min, and the stirring time is not less than 2h, until there is no visible suspended matter in the mixed glue; Wetting agent; wetting agent should be stored below room temperature.

[0037] Clean the surface of the dipping equipment to ensure that the equipment is operating normally and the temperature is controllable and accurate within ±1°C; and lay a layer of release paper on the surface of the equipment; cut the glass fiber fabric or quartz fiber fabric of the required size, and put Spread the fiber fabric on the release paper on the table top of the dipping e...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a method for preparing a large-thickness fiber fabric prepreg for composite materials, and belongs to the technical field of prepreg production. The present invention prepares a large-thickness fiber fabric prepreg through steps such as preheating, soaking, drying, and drying. Difficulty impregnating large-thickness fiber fabrics and uneven resin impregnation ensure that the prepared prepreg has stable quality and excellent comprehensive performance. The prepreg produced by the method has complete infiltration, uniform resin infiltration, good manufacturability, rapid mass production, and is suitable for the preparation of prepregs with various thicknesses.

Description

technical field [0001] The invention relates to a method for preparing a large-thickness fiber fabric prepreg for composite materials, and belongs to the technical field of prepreg production. Background technique [0002] Composite materials include metal composite materials and non-metal composite materials. With the development of composite material technology, more and more fields have been applied to non-metal composite materials. From the aerospace field to the civil transportation field, the use of non-metallic composite materials is increasing. Among non-metallic composite products, prepreg products are used the most and are the most common. Traditional prepregs are generally thin, with a thickness of less than 1mm, and are suitable for continuous production on machines. However, in some special fields, large-thickness prepregs are required, and the thickness is generally 1~3mm, and the fabric structure is also different, which is a large-thickness 2.5D quartz fibe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/41D06M13/144D06B5/22D06B15/00
Inventor 范开春刘军秦岩孙绯王振华王稳杨恺张志斌吴家炳陈兴峰
Owner HUBEI FEILIHUA QUARTZ GLASS
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