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Tow prepreg, composite material high-pressure hydrogen storage tank and preparation process of composite material high-pressure hydrogen storage tank

A technology of composite materials and prepregs, applied in the direction of fixed-capacity gas storage tanks, mechanical equipment, pressure vessels, etc., can solve problems such as weak shear strength, fatigue damage of the matrix, hydrogen storage density limited by the size of the pressure, etc. , achieve excellent weather resistance and fatigue resistance, solve the effect of poor dispersion and simple operation

Pending Publication Date: 2020-05-05
深圳市郎搏万先进材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydrogen storage density of high-pressure gaseous hydrogen storage tanks is severely limited by the pressure. To increase the hydrogen density, the hydrogen storage pressure must be increased. This poses challenges to the size, weight, safety and storage cost of the container. The current high-pressure Gaseous hydrogen storage tanks can no longer meet the needs of the market
The use of fiber-reinforced composite materials to prepare lightweight gas storage tanks is the general trend, but the existing fiber-reinforced composite materials still have the problems of weak shear strength and insufficient toughness, and are easy to break under excessive pressure, which is not suitable for the high-pressure environment of gas storage tanks. and mechanical strength; and the gas storage tank is in the environment of inflating and deflating for a long time, the matrix is ​​prone to fatigue damage, which affects the service life of the gas storage tank

Method used

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  • Tow prepreg, composite material high-pressure hydrogen storage tank and preparation process of composite material high-pressure hydrogen storage tank
  • Tow prepreg, composite material high-pressure hydrogen storage tank and preparation process of composite material high-pressure hydrogen storage tank
  • Tow prepreg, composite material high-pressure hydrogen storage tank and preparation process of composite material high-pressure hydrogen storage tank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0075] An epoxy resin tow prepreg comprises carbon fiber, a special fiber sizing agent for epoxy resin and an epoxy resin composition that are sequentially dip-coated on the surface of the fiber.

[0076] Above-mentioned special fiber sizing agent for epoxy resin comprises the following components by weight:

[0077] 60 parts of solid epoxy resin, 25 parts of liquid epoxy resin, 30 parts of deionized water, 6 parts of epoxy resin emulsifier, 3 parts of epoxy resin coupling agent, and 3 parts of epoxy resin surfactant.

[0078] Wherein, the solid epoxy resin comprises 4 parts by weight of high molecular weight bisphenol A epoxy resin, 3 parts by weight of novolak epoxy resin, and 2 parts by weight of high molecular weight hydantoin epoxy resin;

[0079] The liquid epoxy resin comprises 4 parts by weight of low molecular weight bisphenol A epoxy resin, 3 parts by weight of bisphenol F epoxy resin, 1 part by weight of low molecular weight novolak epoxy resin, 1 part by weight of ...

Embodiment 1

[0086] The epoxy resin tow prepreg of embodiment 1 is prepared by the following process:

[0087] use figure 1 In the preparation system shown, the carbon fiber is unrolled on the unwinding creel, the wet resin chamber in the sizing tank is closed, and the fiber is sizing with the special fiber sizing agent for epoxy resin in Example 1 in the sizing chamber, and the fiber is sizing through transmission and After spreading, the epoxy resin composition of embodiment 1 is coated on the two rollers of the gluing and impregnating device, rolled onto the fiber by the rollers, and then the resin content is controlled to be 35% by the squeeze roller control device, and finally Carry out winding on the creel, and protect the tow prepreg with a film during winding;

[0088] The preparation process of the epoxy resin tow prepreg in Examples 2-6 is the same as in Example 1, and will not be repeated here.

Embodiment 7

[0090] A PA thermoplastic resin tow prepreg comprises PA tow, a PA special fiber sizing agent and a PA thermoplastic resin composition that are sequentially dip-coated on the surface of the PA tow.

[0091] The above-mentioned special fiber sizing agent for PA comprises the following components in parts by weight: 50 parts of polyurethane resin, 60 parts of alcohol-soluble polyamide resin, 6 parts of bisphenol A epoxy resin, 2 parts of bisphenol F epoxy resin, phenolic ring 2 parts of oxygen resin, 50 parts of alcohol, 60 parts of deionized water, 6 parts of PA sizing agent emulsifier, 5 parts of PA sizing agent coupling agent, and 6 parts of PA sizing agent surfactant.

[0092] Among them, the PA sizing agent emulsifier is polyether dialkyl ester and carboxymethyl cellulose; the PA sizing agent coupling agent is epoxy silane coupling agent, amino silane coupling agent, epoxy silane coupling agent, The weight ratio of aminosilane coupling agent is 1:5; PA sizing agent surfacta...

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Abstract

The invention discloses epoxy resin tow prepreg. A system of resin with high toughness and fatigue resistance is adopted, and an added reinforcing agent improves the strength and toughness of a material from the perspective of omnidirectional mechanics; and the obtained tow prepreg is excellent in mechanical property, high in strength, good in toughness and high in fatigue resistance. The invention further discloses a composite material high-pressure hydrogen storage tank. A graphene modified inner container is adopted, the mechanical properties and the toughness of the hydrogen storage tank are improved in combination with the epoxy resin tow prepreg with excellent performance and a thermoplastic resin tow prepreg winding layer, the hydrogen storage tank is suitable for the storage and use environment of high-pressure hydrogen and liquid gas, the fatigue resistance is good, and the service life is long. The invention further discloses a preparation process of the composite material high-pressure hydrogen storage tank. The preparation of prepreg by wet process and hot melt can be realized, an inner container self-tightening process and a winding process can generate a higher innercontainer self-tightening effect and enable tension of each fiber bundle to be more uniform, the strength advantage of fibers is fully utilized, and the fatigue resistance is good.

Description

technical field [0001] The invention relates to the technical field of tow prepreg and composite material high-pressure container, in particular to a tow prepreg, a composite material high-pressure hydrogen storage tank and a preparation process thereof. Background technique [0002] Fiber-reinforced composite materials have performance advantages such as light weight, high strength, corrosion resistance, and fatigue resistance. In practical applications, they can greatly reduce weight and improve the performance of parts. As the intermediate material of composite materials, prepreg is a prepreg sheet product made by impregnating fibers in the matrix. Compared with other materials, the prepreg molded product can improve strength, fatigue strength, hardness, and durability. Abrasion resistance, impact resistance, corrosion resistance, light weight and many other characteristics are often used in aerospace industry and general industry. With the continuous development of prep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B11/16B29C70/30B29C70/54C08J5/24C08L63/02C08L63/04C08L63/00C08L77/00C08L101/00C08K3/04D06M15/564D06M15/59D06M15/55F17C1/16D06M101/34
CPCB29B11/16B29C70/30B29C70/54C08J5/24D06M15/564D06M15/59D06M15/55F17C1/16C08J2363/00C08J2363/02C08J2363/04C08J2463/00C08J2463/02C08J2463/04C08J2477/00C08J2400/22C08K3/042D06M2200/40D06M2101/34F17C2203/0665F17C2203/067F17C2203/0663B29L2031/7156Y02E60/32
Inventor 康红伟
Owner 深圳市郎搏万先进材料有限公司
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