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Epoxy resin composition for automobile compressed natural gas steel inner liner ring-direction winding gas cylinder, and preparation method thereof

A technology of compressed natural gas and epoxy resin, applied in the field of epoxy resin, can solve the problems of short time, long time, low viscosity, etc., and achieve the effect of improving stretching, good mechanical properties, and good flexibility

Inactive Publication Date: 2015-04-29
ZIGONG DAYE HIGH PRESSURE CONTAINER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned compressed natural gas epoxy resin special material has the characteristics of long curing time at room temperature, low viscosity, good permeability, and short curing time at medium temperature. However, the tensile strength of the composite material made by impregnating glass fiber is only At about 1150MPa, the interlaminar shear strength is about 73.3MPa, and the mechanical properties need to be further improved

Method used

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  • Epoxy resin composition for automobile compressed natural gas steel inner liner ring-direction winding gas cylinder, and preparation method thereof
  • Epoxy resin composition for automobile compressed natural gas steel inner liner ring-direction winding gas cylinder, and preparation method thereof
  • Epoxy resin composition for automobile compressed natural gas steel inner liner ring-direction winding gas cylinder, and preparation method thereof

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preparation example Construction

[0037] The present invention also provides a method for preparing an epoxy resin composition for a compressed natural gas steel liner hoop wound gas cylinder for vehicles, comprising the following steps:

[0038] Mix epoxy resin, diluent and toughening agent with a weight ratio of 100:5~30:5~50 to obtain an epoxy resin mixture, and the toughening agent is a mixture of fatty alcohol glycidyl ether and polyurethane or nitrile rubber Mixture, the weight ratio of described fatty alcohol glycidyl ether and described polyurethane or nitrile rubber is 10:1~5;

[0039] Mix the epoxy resin mixture, curing agent and curing accelerator with a weight ratio of 100:50~100:0.1~5.0 to obtain an epoxy resin combination for a compressed natural gas steel liner hoop wound gas cylinder for vehicles things.

[0040] The raw materials for the preparation of the epoxy resin composition used in the compressed natural gas steel liner circumferentially wound gas cylinders for vehicles in the present i...

Embodiment 1

[0057] Add 100kg of CYD-128 epoxy resin, 10kg of XY692 benzyl glycidyl ether, 15kg of XY748 alkyl glycidyl ether with a carbon chain of 12 to 14, and 3kg of QS-H toughening agent into a clean and airtight mixing and heating device. In the reactor, the epoxy resin mixture is obtained after stirring;

[0058] According to the weight ratio of 100:66.4:0.625, the epoxy resin mixture, methyl hexahydrophthalic anhydride and benzyl dimethylamine are added into a clean and closed reactor with a stirring and heating device, and the mixture for use in An epoxy resin composition for a compressed natural gas steel liner hoop-wound gas cylinder for vehicles.

[0059] According to the method described above, the epoxy resin composition used for the compressed natural gas steel inner liner hoop wound gas cylinder for vehicles is used to prepare the winding layer composite material, and its mechanical properties are measured according to the method described above. performance. The test res...

Embodiment 2

[0061] Add 100kg of E-51 epoxy resin, 15kg of XY692 benzyl glycidyl ether, 15kg of XY748 alkyl glycidyl ether with a carbon chain of 12 to 14, and 5kg of QS-H Qishi toughening agent into a clean and airtight reactor with stirring and heating devices In, stir to obtain epoxy resin mixture after;

[0062] According to the weight ratio of 100:75:1.0, the epoxy resin mixture, methyl hexahydrophthalic anhydride and benzyl dimethylamine are added into a clean and airtight reactor with a stirring and heating device, and the mixture for use in The epoxy resin composition of the compressed natural gas steel inner liner hoop wound gas cylinder for vehicles has a tensile strength of 70MPa, a flexural strength of 1265MPa, and an elongation at break of 4.8%.

[0063]According to the method described above, the epoxy resin composition used for the compressed natural gas steel inner liner hoop wound gas cylinder for vehicles is used to prepare the winding layer composite material, and its me...

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Abstract

The invention provides an epoxy resin composition for an automobile compressed natural gas steel inner liner ring-direction winding gas cylinder, which comprises epoxy resin mixture, curing agent and curing accelerator by weight ratio of 100: 50-100: 0.1-5.0, wherein the epoxy resin mixture comprises epoxy resin, diluent and flexibilizer by weight ratio of 100: 5-30: 5-50; the flexibilizer is mixture of fatty alcohol glycidyl ether and polyurethane or nitrile rubber; and the weight ratio between the fatty alcohol glycidyl ether and the polyurethane or the nitrile rubber is 10: 1-5. The composite material prepared by soaking glass fiber into the epoxy resin composition has better mechanical property. Furthermore, the epoxy resin composition also has the characteristics of low viscosity, wettability on the glass fiber, good construction technology and the like. The invention also provides a preparation method of the epoxy resin composition for the automobile compressed natural gas steel inner liner ring-direction winding gas cylinder.

Description

technical field [0001] The invention relates to the technical field of epoxy resins, in particular to an epoxy resin composition used for a compressed natural gas steel liner hoop wound gas cylinder for vehicles and a preparation method thereof. Background technique [0002] As we all know, compressed natural gas cylinders are pressure vessels used to store and transport compressed natural gas (CNG). Among them, compressed natural gas cylinders for vehicles include hoop-wound cylinders with metal liners and fully-wound cylinders with plastic liners (all-plastic composite cylinders). All-plastic composite CNG gas cylinders have complicated three-dimensional winding process, poor combination and airtightness of the bottle mouth and non-metallic lining, high requirements for the material and shape design of the metal bottle mouth, and the appearance of lining and composite materials at low temperatures. Defects such as peeling or aging phenomenon, poor temperature resistance o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L75/04C08L9/02C08K5/1515C08G59/42
Inventor 陈岗刘守贵张应禄杨朝波袁侨远
Owner ZIGONG DAYE HIGH PRESSURE CONTAINER