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A high-efficiency energy-absorbing fiber-metal composite pipe and a mold-free preparation method thereof

A technology of fiber metal and composite pipes, which is applied in the field of high-efficiency energy-absorbing fiber-metal composite pipes and its moldless preparation, can solve problems such as stress concentration, interfacial pores, and performance effects of composite components, achieve high energy absorption efficiency, and reduce production cost, effect of alleviating urgent needs

Active Publication Date: 2020-06-19
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the reinforcing material is not completely wetted, it is easy to produce defects such as pores and dry spots at the interface, resulting in stress concentration, which has a great impact on the performance of composite components

Method used

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  • A high-efficiency energy-absorbing fiber-metal composite pipe and a mold-free preparation method thereof
  • A high-efficiency energy-absorbing fiber-metal composite pipe and a mold-free preparation method thereof
  • A high-efficiency energy-absorbing fiber-metal composite pipe and a mold-free preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In the first step, a 6061 aluminum alloy round tube with an outer diameter of 38 mm and an inner diameter of 35 mm and a length of 300 mm is selected as the inner tube, and its surface is treated by phosphoric acid anodizing. Cut a unidirectional glass fiber woven cloth with a length of 600 mm and a width of 300 mm (spread 5 layers), pretreatment: extract with acetone as a solvent in a Soxhlet extractor for 48 hours, dry at 105°C for 1 hour, activation treatment: first immerse in 80°C HC1:H 2 o 2 :H 2 O=1:1:5 solution for 5min, rinsed with distilled water several times, in 80°C NH 3 :H 2 o 2 :H 2 O=1:1:5 solution was treated for 5 minutes, finally treated with 0.5% silane coupling agent / ethanol solution for 30 minutes, and dried at 105°C. Wrap the pretreated and activated unidirectional glass fiber woven cloth on the aluminum tube (the 0° direction is parallel to the axis direction of the aluminum tube);

[0034] The second step is to select a 6061 aluminum alloy...

Embodiment 2

[0040] The first step is to select a 6061 aluminum alloy round tube with a small head outer diameter of 30mm and an inner diameter of 27mm, a large head with an outer diameter of 58mm and an inner diameter of 55mm and a length of 300mm as the inner tube, and perform surface treatment by phosphoric acid anodizing. Cut out a unidirectional glass fiber woven cloth with an isosceles trapezoidal shape of 95mm in length, 185mm in length at the bottom, and 300mm in height (4 layers), pretreatment: extract with acetone as a solvent in a Soxhlet extractor for 48 hours, and dry at 105°C After 1h, activation treatment: first immerse in HC1:H at 80°C 2 o 2 :H 2 O=1:1:5 solution for 5min, rinsed with distilled water several times, in 80°C NH 3 :H 2 o 2 :H 2 O=1:1:5 solution was treated for 5 minutes, finally treated with 0.5% silane coupling agent / ethanol solution for 30 minutes, and dried at 105°C. Wrap the pretreated and activated unidirectional glass fiber woven cloth on the alumi...

Embodiment 3

[0047] In the first step, a TA2 titanium alloy square tube with an outer diameter of 46 mm, a thickness of 1 mm and a length of 200 mm is selected as the first layer of metal tube, and the surface is treated by acetone ultrasonic cleaning. Cut a biaxial carbon fiber woven cloth with a length of 1500mm and a width of 200mm (spread 8 layers) as the first fiber layer, pretreatment: extract with acetone as a solvent in a Soxhlet extractor for 48 hours, and dry at 105°C for 1 hour. Activation treatment: first immerse in HC1:H at 80°C 2 o 2 :H 2 O=1:1:5 solution for 5min, rinsed with distilled water several times, in 80°C NH 3 :H 2 o 2 :H 2 O=1:1:5 solution was treated for 5 minutes, finally treated with 0.5% silane coupling agent / ethanol solution for 30 minutes, and dried at 105°C. Wrap the pretreated and activated biaxial carbon fiber woven cloth on the titanium tube;

[0048] In the second step, a TA2 titanium alloy square tube with an outer diameter of 48 mm, a thickness ...

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Abstract

The invention discloses an efficient energy absorption fiber and metal composite pipe and a mold-free preparation method of the efficient energy absorption fiber and metal composite pipe. The method comprises the following steps that A1, a metal inner pipe subjected to anodizing surface treatment is obtained, a fiber fabric with the certain size is cut according to the size of the metal inner pipe, preheated and activated and is wound and laid on the metal inner pipe; A2, a metal outer pipe subjected to anodizing surface treatment is obtained and drilled in the axial and radial directions, andthe metal inner pipe where the fiber fabric is laid is sleeved with the metal outer pipe; and according to the designed structure of the fiber and metal composite pipe, whether the steps of repeatedly laying fiber fabrics outside the metal outer pipe and sleeving an another metal outer pipe and the repeating frequency are determined. According to the mold-free preparation method of the efficientenergy absorption fiber and metal composite pipe, the efficiency is high, flexibility is high, the finished product quality performance is excellent, the production cost is greatly reduced, and a goodthough train and reference are provided for low-cost preparation of composite materials.

Description

technical field [0001] The invention belongs to the field of advanced composite materials and their preparation and molding, and in particular relates to a high-efficiency energy-absorbing fiber-metal composite pipe and a moldless preparation method thereof. Background technique [0002] With the increasing demand for advanced transportation in modern society, the number of various means of transportation is increasing, and the speed is getting faster and faster. While the high-speed and convenient carriers such as automobiles, airplanes, and ships bring great convenience to people, they also inevitably cause frequent collision accidents, resulting in serious loss of life and property, and a serious economic burden on the society. Therefore, the collision problem has attracted great attention from many countries and governments, and successively formulated and implemented laws and technical specifications related to the passive safety of automobiles, prompting scientists and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/68
CPCB29C70/68
Inventor 陶杰韩正东李华冠徐小村王昊李红丽
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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