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Basalt fiber and carbon fiber hybrid composite compressed natural gas cylinder and preparation method thereof

A technology of basalt fiber and compressed natural gas, which is applied in the direction of mechanical equipment, pressure vessels, fixed-capacity gas storage tanks, etc., can solve the problems affecting the usability of carbon fiber-wound aluminum alloy gas cylinders, the decrease in strength of composite materials, and poor interlayer shear performance, etc. Problems, to achieve good resistance to heat and humidity, low production costs, to ensure the effect of pressure-bearing capacity

Active Publication Date: 2015-09-16
沈阳中复科金压力容器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although steel gas cylinders and glass fiber hoop-wound steel gas cylinders are low in cost, they are relatively cumbersome, and the working pressure is generally lower than 20MPa, and the amount of gas contained is small; although carbon fiber wound aluminum alloy gas cylinders have the advantages of light weight The characteristics of high strength also have the problem of poor interlayer shear performance, especially the strength of the composite material drops significantly after being impacted; in addition, the cost of carbon fiber is high, which also affects the usability of carbon fiber wound aluminum alloy cylinders

Method used

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  • Basalt fiber and carbon fiber hybrid composite compressed natural gas cylinder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Wet winding process is used to prepare 100L basalt fiber and carbon fiber hybrid composite compressed natural gas cylinder with a working pressure of 35MPa. The winding tension of basalt fiber is 20-16N, the tension of carbon fiber is 30-23N, and the tension of glass fiber is 18-15N. .

[0028] Main raw materials: EPIKOTE 828 epoxy resin, basalt fiber treated with KH-550 silane coupling agent with a linear density of 1200tex and a tensile strength of 3800MPa, SYT49-12K carbon fiber with a tensile strength of 5012MPa and 2800MPa tensile strength ERC-550 glass fiber treated with UP-570 coupling agent;

[0029] The epoxy resin matrix, basalt fiber, carbon fiber and glass fiber are combined into a pressure vessel product through process equipment, process technology and structural design, including coating of interlayer bonding coordination layer, winding of basalt fiber composite layer, winding of carbon fiber composite layer The glass fiber composite layer is wound and t...

Embodiment 2

[0043] Adopt the raw material identical with embodiment 1 to prepare:

[0044] Step 1. Interlayer bonding coordination layer coating

[0045] Install the aluminum alloy lining on the fixed bracket that rotates 360° every 15 seconds, and use a brush to dip in the white high-solid acrylic polyurethane water-based paint to coat to ensure that the outer surface of the aluminum liner is completely coated and evenly coated. The layer thickness is 0.2mm;

[0046] Step 2. Basalt fiber composite layer winding

[0047] Prepare epoxy resin matrix glue, the specific mass ratio of each component is: EPIKOTE 828 epoxy resin: C352350 multi-walled carbon nanotubes: methyl tetrahydrophthalic anhydride curing agent: methyl hexahydrophthalic anhydride accelerator: AFE-1520 silicone Ketone defoamer=100:9:80:3:2, stir evenly to ensure uniform mixing of all components.

[0048] The basalt fiber composite layer is wound by wet winding process, according to 89 2 / 45 2 / 89 2 The winding sequence...

Embodiment 3

[0057] The difference from Example 1 is that the proportion of the epoxy resin matrix glue solution prepared in step 2 is different:

[0058] The mass ratio of each component is, EPIKOTE 828 epoxy resin: C352350 multi-walled carbon nanotubes: methyl tetrahydrophthalic anhydride curing agent: methyl hexahydrophthalic anhydride accelerator: AFE-1520 organic silicone defoamer = 100:10: 80:1:1.

[0059] The water pressure blasting test and the drop test were carried out to verify this embodiment, and the experimental results show that the hybrid compressed natural gas cylinder prepared by this method has good pressure bearing effect and impact resistance.

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Abstract

The invention aims to provide a basalt fiber and carbon fiber hybrid composite compressed natural gas cylinder and preparation method thereof. The compressed natural gas cylinder is characterized in that a composite layer of the compressed natural gas cylinder is composed of an epoxy resin matrix, a basalt fiber, a carbon fiber and fiberglass. Epoxy resin doped with a carbon nano tube is composited with the fibers, so that the adhesive property and shear strength of a single-bundle fiber and interlamination are effectively improved, and the service life of the compressed natural gas cylinder which is collided is prolonged; the mechanical property of the basalt fiber is superior to that of the common fiberglass, the basalt fiber has a favorable anti-humid heat characteristic; compared with the carbon fiber, and the basalt fiber has an obvious cost advantage and more extensive applicability. The natural compressed gas cylinder prepared by a basalt fiber and carbon fiber hybrid composite has the advantages that the cost is effectively lowered while the product performance is ensured; the working pressure of the compressed natural gas cylinder reaches 35MPa; according to a 1.8m high-altitude falling experiment, the burst pressure still exceeds 130MPa, and the safety coefficient is increased by 3.4 times; the compressed natural gas cylinder has favorable use performance and cost advantages.

Description

technical field [0001] The invention relates to a compressed natural gas cylinder, in particular to a compressed natural gas cylinder made of basalt fiber and carbon fiber hybrid composite material and a preparation method thereof. Background technique [0002] At present, the storage of compressed natural gas for vehicles in my country has used steel cylinders, glass fiber hoop-wound steel cylinders and carbon fiber-wound aluminum alloy cylinders. Although steel gas cylinders and glass fiber hoop-wound steel gas cylinders are low in cost, they are relatively cumbersome, and the working pressure is generally lower than 20MPa, and the amount of gas contained is small; although carbon fiber-wound aluminum alloy gas cylinders have the advantages of light weight The characteristics of high strength also have the problem of poor interlayer shear performance, especially the strength of the composite material drops significantly after being impacted; in addition, the high cost of c...

Claims

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Application Information

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IPC IPC(8): F17C1/06C08L63/00C08K9/06C08K7/10
Inventor 齐磊刘扬涛宋维凤王大为
Owner 沈阳中复科金压力容器有限公司
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