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Super hybrid laminated composite structure and preparation method thereof

A layered composite and ultra-hybrid technology, which is applied in the direction of metal layered products, layered product processing, chemical instruments and methods, etc., can solve the problem that the stiffness cannot meet the performance requirements of rail transit, cannot meet the changing environment of rail transit, and Corrosion and labor problems, to achieve high practical engineering application possibility and value, improve fatigue resistance and damage tolerance, and improve comfort

Active Publication Date: 2018-03-23
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN 201620872666 discloses a patent named "a partition door of aluminum honeycomb panel for rail transit". This utility model patent mainly applies aluminum honeycomb to partition door of rail transit, the main purpose is to reduce noise and prevent Fire, its effect is limited, and simply use aluminum honeycomb to manufacture rail transit vehicle doors and their shells, its impact resistance, fatigue resistance, corrosion resistance and damage tolerance are relatively general, and its service life is short, so it cannot Meet the changing environment of rail transit
[0004] The current rail transit vehicle doors and their shells still use aluminum alloy materials to a large extent, which is undoubtedly unfavorable for the further weight reduction of rail transit vehicles; and the use of aluminum honeycomb for rail transit vehicle doors and their shells is less durable. Impact performance, fatigue resistance, corrosion resistance and damage tolerance are relatively general, and problems such as short service life cannot be avoided
If fiber metal laminates are simply used, its stiffness cannot meet the performance requirements of rail transit and its shell
At present, most of the vehicle door interior materials are added after the vehicle door is formed, and its efficiency is low. New materials with excellent damage tolerance and comfortable performance requirements have become a new challenge for the further development of rail vehicle doors and their shells

Method used

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  • Super hybrid laminated composite structure and preparation method thereof
  • Super hybrid laminated composite structure and preparation method thereof
  • Super hybrid laminated composite structure and preparation method thereof

Examples

Experimental program
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Effect test

specific Embodiment 1

[0033] Step 1: For the ultra-hybrid layered composite structure of 2024 aluminum alloy-glass fiber-aramid paper honeycomb-nonwoven composite knitted felt, first select 0.3mm thick 2024 aluminum alloy, glass fiber, which contains PP resin, and the pore size is 6mm aramid paper honeycomb and 2mm thick non-woven composite needle felt, the fiber layer is hemp fiber. Cut the 2024 aluminum alloy layer, fiber layer, aramid paper honeycomb layer, non-woven composite needle felt layer and fabric layer into 300×300mm, and then clean the surface of the 2024 aluminum alloy layer with alcohol.

[0034] Step 2: Alkaline wash the 2024 aluminum alloy layer for 1 minute, the solute of the alkali washing solution is NaOH, Na 2 CO 3 , where the density is 30g / L respectively, then rinsed with tap water for 5min, and then pickled, the solute of pickling is HNO 3 , where the density is 400g / L, then rinse with tap water for 5 minutes. Finally, the 2024 aluminum alloy layer was anodized with phosp...

specific Embodiment 2

[0040] The first step: for the 6061 aluminum alloy-carbon fiber-glass fiber three-dimensional three-dimensional fabric-nonwoven needle felt layer super-hybrid layered composite structure, first select 0.3mm thick 6061 aluminum alloy, carbon fiber, which contains PP polypropylene resin, and the aperture Glass fiber three-dimensional fabric with a size of 8mm and a non-woven composite needle felt with a thickness of 2.5mm, and the reinforcing fiber is bamboo fiber. Cut the 6061 aluminum alloy layer, carbon fiber layer, glass fiber three-dimensional fabric layer, non-woven composite needle felt layer and fabric layer into 400×400mm, and then clean the surface of the 6061 aluminum alloy layer with acetone.

[0041] Step 2: Wash the 6061 aluminum alloy layer with alkali for 1.5 minutes, the solute of the alkali washing solution is NaOH, Na 2 CO 3 , where the density is 30g / L respectively, then rinse with tap water for 8min, and then carry out pickling, the solute of pickling is HN...

specific Embodiment 3

[0047] The first step: for the ultra-hybrid layered composite structure of aluminum-lithium alloy-aramid fiber-aluminum honeycomb-non-woven needle-punched felt layer, first select 0.3mm thick aluminum-lithium alloy, aramid fiber, which contains PP (polypropylene) Resin, aluminum honeycomb with a pore size of 10 mm and a non-woven composite needle-punched felt layer with a thickness of 3 mm, and the reinforcing fiber is hemp fiber. Cut the aluminum-lithium alloy layer, aramid fiber layer, aluminum honeycomb layer, non-woven composite needle-punched felt layer and fabric layer into 500×500mm, and then clean the surface of the aluminum-lithium alloy layer with alcohol.

[0048] Step 2: Alkaline-washing the aluminum-lithium alloy layer first, then rinsing with tap water, then pickling, and rinsing with tap water. The aluminum-lithium alloy layer was subjected to phosphoric acid anodization for 30 minutes, then rinsed for 10 minutes and dried;

[0049] The third step: select the s...

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Abstract

The invention discloses a preparation method of a super hybrid laminated composite structure. The super hybrid laminated composite structure comprises the following steps of: S01, performing cutting and cleaning; S02, performing anodizing; S03, performing attachment of glue film; S04, performing laying and attachment according to structural design of a fiber layer, a metal layer, a honeycomb layerand a non-woven composite punched felt layer; S05, performing heating and pressure curing; S06, performing cutting; and S07, performing non-destructive testing. The invention also discloses the superhybrid laminated composite structure which is obtained by the preparation method. According to the super hybrid laminated composite structure and the preparation method of the super hybrid laminatedcomposite structure, the original and excellent performance of the fiber and metal board layers can be ensured, and meanwhile high rigidity is obtained; in addition, no inner decorative layers are needed to be arranged after a vehicle door is molded, the production efficiency is improved, and the requirements for the comfort degree is further improved.

Description

technical field [0001] The invention relates specifically to a super-hybrid layered composite structure and a preparation method thereof, and belongs to the field of preparation and forming of advanced composite materials. Background technique [0002] Compared with public transportation such as buses, private cars, and bicycles, rail transit has unique advantages such as large capacity, low pollution, low noise, low energy consumption, high speed, low cost, small footprint, comfort, and all-weather. It cannot be replaced by other means of transportation. Especially with the development of high-speed railways, my country's rail transit has made greater progress, and with the construction of the Belt and Road Initiative, "high-speed rail diplomacy" has become a new business card for my country's external development, building and operating faster, safer and more comfortable high-speed railways Railway is the new goal of my country's rail transit at this stage. Rail transit v...

Claims

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Application Information

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IPC IPC(8): B32B37/06B32B37/10B32B37/12B32B15/14B32B15/20B32B17/04B32B17/06B32B17/12B32B27/02B32B27/04B32B27/06B32B27/12B32B27/32B32B27/34B32B9/00B32B9/04B32B29/00B32B3/12B32B7/12B61D19/00B61D17/04
CPCB32B3/12B32B5/02B32B5/022B32B5/10B32B5/12B32B5/26B32B7/12B32B15/14B32B15/20B32B29/02B32B37/06B32B37/1009B32B37/1207B32B2037/1223B32B2260/02B32B2260/046B32B2262/0253B32B2262/0269B32B2262/065B32B2262/101B32B2262/106B32B2262/14B32B2307/102B32B2307/3065B32B2307/552B32B2307/558B32B2307/714B32B2307/718B32B2309/02B32B2309/04B32B2309/12B32B2605/10B61D17/04B61D19/00
Inventor 李华冠陆一孙邓辉费炜杰陶杰
Owner NANJING INST OF TECH
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