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Method for preparing linen fiber morph-genetic structure C/Sn or C/Al compound material

A composite material and hemp fiber technology, which is applied in the field of preparation of hemp fiber relic structure C/Sn or C/Al composite materials, to achieve the effect of sound absorption, friction reduction and wear resistance, and broad application prospects

Inactive Publication Date: 2009-03-11
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no reference to the preparation of C fiber / non-ferrous metal matrix composites using the hemp fiber remains structure, especially the preparation of C fiber / non-ferrous metal matrix composites with hemp fiber remains structure by reactive hot pressing sintering.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] SnCl 4 Aqueous solution and FeCl 3 Aqueous solution, mix evenly, add ammonia water dropwise, produce chemical co-precipitation, and obtain Fe-containing nano-hybrid oxide SnO 2 Precursor aqueous solution in which the atomic ratio of Sn to Fe is 5:1. Cut the completely degummed ramie fiber (fine dry hemp) to a length of 5mm to 10mm, soak it in 5wt% NaOH aqueous solution for 30h, take it out, wash it until the pH is neutral (pH=7), and then place it at a temperature of 60 In a vacuum environment at ℃, dry for 4 hours to obtain the hemp fiber raw material; immerse the hemp fiber raw material in the aqueous solution of the nano-oxide precursor for 1 hour, take it out, place it in an environment with a temperature of 60 ℃, dry it for 4 hours, and repeat the immersion and drying , until the weight ratio of Sn element to ramie fiber is 5:4, and the preparation is prepared. After pressing the prepared material into a billet at room temperature and a pressure of 50 MPa, put i...

Embodiment 2

[0049] AlCl 3 Aqueous solution and LaCl 3 Aqueous solution, mix evenly, add ammonia water dropwise, produce chemical co-precipitation, and obtain nano-hybrid oxide Al containing La 2 o 3 Precursor aqueous solution, the atomic ratio of Al and La in the aqueous solution is 5:3. Cut undegummed raw sisal hemp into 10mm-20mm long sections, soak in 25wt% NaOH aqueous solution for 10h, wash with water until the pH is neutral (pH=7), place in an environment with a temperature of 105°C, and dry for 1h , and then immersed in the aqueous solution of nano-oxide precursor, immersed for 1h, taken out, placed in an environment of 105 ° C, dried for 1h, repeated dipping and drying, until the weight ratio of Al to hemp fiber was 5:5, and the preparation was prepared. After pressing the prepared material into a billet at room temperature and a pressure of 100MPa, put it into a vacuum hot-press furnace with a temperature of 700°C and a pressure of 5MPa, keep it warm for 0.5h, heat-press and s...

Embodiment 3

[0051] AlCl 3 、LaCl 3 and CeCl 3 Aqueous solution, mix evenly, add ammonia water dropwise, produce chemical co-precipitation, and obtain nano-hybrid oxide Al containing La and Ce 2 o 3 Precursor aqueous solution, the atomic ratios of Al to La and Ce in the aqueous solution are 5:1 and 5:1, respectively. Cut undegummed raw sisal hemp into 5mm-10mm long sections, soak in 15wt% NaOH aqueous solution for 20h, wash with water until the pH is neutral (pH=7), place in a vacuum environment at a temperature of 85°C, and dry 3h, then immersed in the aqueous solution of nano-oxide precursor, dipped for 0.75h, took it out, placed it in a vacuum environment at 85°C, dried for 3h, repeated dipping and drying until the weight ratio of Al to hemp fiber was 5:3, and prepared Have to prepare. After pressing the prepared material into a billet at room temperature and a pressure of 75MPa, put it into a vacuum hot-press furnace with a temperature of 700°C and a pressure of 3MPa, keep it warm ...

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PUM

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Abstract

The invention discloses a method for preparing a C / Sn or C / Al composite material of a morph-genetic fibrilia structure. Firstly, a nano SnO2 or Al2O3 precursor aqueous solution doped with Fe, La and Ce is prepared, and then fibrilia is taken and is pretreated; secondly, a fibrilia raw material or a crystalline structure C with the morph-genetic fibrilia structure is obtained and is put into the nano oxide precursor aqueous solution for dipping; and thirdly, the C / Sn or C / Al composite material of the morph-genetic fibrilia structure is obtained through high-temperature vacuum reaction hot-pressing sintering and annealing. The preparation method immerses a Sn or Al oxide precursor into or around a cavity of the fibrilia structure and utilizes a reactive hot pressing molding process to ensure that the nano precursor is dehydrated into an oxide which reacts with C and reduces the generated product to obtain metal Sn or Al; and the produced composite material has the characteristics of light mass, vibration elimination and good sound adsorption, antifrictional property and wear resistance, extends the application field of fibrilia composite materials, and has wider application prospect.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and relates to a method for preparing a composite material, in particular to a method for preparing a C / Sn or C / Al composite material with a hemp fiber remains structure. Background technique [0002] At present, the known technologies of C fiber / non-ferrous metal composite materials with a relic structure include: 1) "Research Concept and Research Progress of Relic Materials" published in Materials Herald [J], 2006 (10): 5-7; 2) Research on the Preparation and Mechanical Properties of Aluminum Alloy / Wood Ceramic Composite Materials published in 2004 China Materials Symposium [C], 2004: 421; 3) Patent Application No. CN02137503.8 "Ecological Ceramics, Metal Composite Materials The preparation method of " (publication number CN1403620, open day March 19th, 2003). [0003] The technologies disclosed above mainly involve the preparation of C-fiber ceramic composite materials from natur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C47/10C22C101/00C22C121/00
Inventor 王俊勃杨敏鸽贺辛亥付翀陈立成畅巍
Owner XI'AN POLYTECHNIC UNIVERSITY
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