A kind of continuous glass fiber reinforced thermoplastic composite material and preparation method thereof

A technology for reinforcing thermoplastic and continuous glass fibers, applied in the field of composite materials, can solve the problems of dispersion, impregnation difficulties, fiber deformation, and poor designability of layup structures, so as to reduce the risk of thermal degradation and reduce the process of heating and compounding Effect

Active Publication Date: 2021-07-06
株洲时代工程塑料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The main technical problems to be solved by the present invention are: the difficulty of dispersing and impregnating continuous glass fibers in thermoplastic resin melts with high molecular weight and high melt viscosity; Problems of efficient incorporation and dispersion of additives in continuous glass fiber reinforced thermoplastic composites
[0009] In addition, this application can also solve the problem of poor designability of reinforcing fiber direction and lay-up structure in conventional continuous glass fiber reinforced thermoplastic composite materials; The problem of one-step forming and preparation of composite materials, and the problem that the fibers of conventional continuous glass fiber reinforced thermoplastic composite materials are prone to deformation and slippage during the process of composite material preparation and product molding, and the stability and reliability of composite materials are difficult to guarantee.

Method used

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  • A kind of continuous glass fiber reinforced thermoplastic composite material and preparation method thereof
  • A kind of continuous glass fiber reinforced thermoplastic composite material and preparation method thereof
  • A kind of continuous glass fiber reinforced thermoplastic composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] This embodiment provides a method for preparing a continuous glass fiber reinforced thermoplastic resin-based composite material, the steps are as follows:

[0074] (1) 70 kg of PP resin, 10 kg of glass fiber compatibilizer (PP grafted maleic anhydride), 16 kg (decabromodiphenylethane), 4 kg of antimony trioxide, 2 kg of carbon black-containing color Mother, 0.3 kg of light stabilizer (benzophenone ultraviolet absorber), 0.3 kg of heat stabilizer are mixed evenly through the batching pot; then sheared and plasticized by a twin-screw extruder, and pultruded into a thickness of 70um, a width of 1300mm, and a length of 12 rolls of fixed-length PP resin film;

[0075] The continuous glass fiber yarn is treated with surface sizing agent emulsion, and then dehydrated by hot air baking for 12 hours; wherein, the surface sizing agent emulsion is made of aminosilane coupling agent, PE wax floating liquid, maleic anhydride grafted polypropylene emulsion, deionized An emulsion pr...

Embodiment 2

[0084] This embodiment provides a method for preparing a continuous glass fiber reinforced thermoplastic resin-based composite material, the steps are as follows:

[0085] (1) 120 kg of polyamide 6 resin, 3 kg of color masterbatch (carbon black), 0.5 kg of polyamide flow modifier, 0.5 kg of light stabilizer (hindered amine light stabilizer), 1.0 kg of heat stabilizer (sulfur Ester heat stabilizer) is uniformly mixed in a batching pot; then sheared and plasticized by a twin-screw extruder, and cast and pultruded into 30 rolls of PA6 film with a thickness of 70um, a width of 1300mm, and a fixed length;

[0086] The continuous glass fiber yarn is treated with surface sizing agent emulsion, and then dehydrated by hot air drying for 12 hours; wherein, the surface sizing agent emulsion is made of acid anhydride coupling agent, water-soluble PEG600, epoxy emulsion and polyurethane intermixing emulsion, deionized water and a small amount of acid to prepare the emulsion by stirring. Th...

Embodiment 3

[0096] This embodiment provides a method for preparing a continuous glass fiber reinforced thermoplastic resin-based composite material, the steps are as follows:

[0097] (1) 80 kg of PET resin, 30 kg of flame retardant (magnesium hydroxide), 1.5 kg of color masterbatch (carbon black), 0.5 kg of PET resin flow modifier, 1.2 kg of heat stabilizer (phenolic heat stabilizer) Mix evenly through a batching pot; then shear, plasticize and granulate through a twin-screw extruder, and then quench and grind into 30-50 mesh PET resin powder through liquid nitrogen;

[0098] The continuous glass fiber yarn is treated with surface sizing agent emulsion, and then subjected to hot air baking and dehydration treatment for 12 hours; wherein, the surface sizing agent emulsion is composed of KH570 coupling agent, fatty acid ester lubricant, polyurethane emulsion and epoxy emulsion composition, deionized An emulsion prepared by stirring water and a small amount of formic acid. The active ingred...

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Abstract

A method for preparing a continuous glass fiber reinforced thermoplastic composite material: (1) mixing a thermoplastic resin and an auxiliary agent, forming a film through melt pultrusion to form a thermoplastic resin film; or mixing a thermoplastic resin and an auxiliary agent, and performing melting and shearing After granulation and quenching, thermoplastic resin powder is made; after the continuous glass fiber yarn is treated with a surface sizing agent, it is woven into continuous glass fiber cloth with different angles and different structures; (2) thermoplastic resin film (or resin Powder) and continuous glass fiber cloth are alternately laid to obtain a laminate of thermoplastic resin and continuous glass fiber cloth; (3) melt molding impregnation to obtain continuous glass fiber reinforced thermoplastic composite material. The composite material prepared by the invention can be applied to automobile and / or rail transit structural parts and functional parts, and is an important measure for realizing light weight, energy saving and emission reduction of automobile and rail transit equipment.

Description

technical field [0001] The invention belongs to the field of composite materials, and relates to a continuous glass fiber reinforced thermoplastic composite material and a preparation method thereof. Background technique [0002] Energy saving and consumption reduction is the main theme of today's social development. Safe, environmentally friendly, lightweight and high-strength materials and products are an effective way to achieve lightweight, energy saving and emission reduction in the fields of automobiles and rail transit. Conventional metal materials and products are limited by the proportion of the material itself , it is difficult to meet the demand for lightweight. Conventional injection molding materials are limited by the strength of the material and cannot meet the load-bearing requirements of structural parts and load-bearing parts. Continuous glass fiber reinforced thermosetting composite materials will release chemical pollutants that pollute the environment dur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/34B29C70/54C08J5/08C08L23/12C08L77/02C08L67/02C08K13/06C08K9/04C08K9/06C08K7/14
CPCB29C70/342B29C70/54C08J5/08C08J2323/12C08J2367/02C08J2377/02
Inventor 杨军张适龄胡天辉张英伟李旭武
Owner 株洲时代工程塑料科技有限责任公司
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