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Preparation method of hemp fabric construction morph-genetic ceramic composite material

A technology of ceramic composite material and fabric structure, which is applied in the field of preparation of hemp fiber fabric structure remains ceramic composite material, can solve the problem that artificial improvement and reconstruction of biological template structure cannot be achieved, and achieve good sensing and electromagnetic shielding, and expand The effect of the field of application

Inactive Publication Date: 2010-09-22
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of the hemp fiber fabric structure remains ceramic composite material, which solves the problem that the existing preparation method cannot construct a "designable" structure from the perspective of artificially improving or reconstructing the biological template structure. Biological template materials, the problem of preparing relic ceramic composites that meet people's different structural performance requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Take the plain weave ramie fiber cloth purchased from the market or self-prepared by the existing weaving technology, and naturally impregnate the SiO after hydrolysis of ethyl orthosilicate at room temperature. 2 The sol was dried for 7 days, and after being naturally impregnated with phenolic resin, the hemp fiber fabric was stacked into 10 layers of cloth by lamination, hot-pressed on a molding machine at 150°C and 0.5MPa for 1 hour, and cured after molding to obtain plain weave hemp Fabric / SiO 2 Composite template. The prepared plain weave hemp fiber fabric / SiO 2 The composite template is placed in a vacuum hot-press furnace, under a vacuum protection atmosphere, the vacuum degree is 1×10 -1 Pa, at a heating rate of 20 °C / min, heat preservation at 1600 °C for 2 h, and cool with the furnace to prepare plain weave hemp fiber fabric silicon carbide ceramic composites. The prepared plain weave hemp fiber fabric structural remains ceramics were repeatedly impregnated ...

Embodiment 2

[0055] Take the sisal fiber cloth with twill weave that is purchased from the market or self-prepared by using the existing weaving technology. After impregnating epoxy resin under positive and negative pressure at room temperature, the hemp fiber fabric is stacked into 15 layers of cloth by lamination. 1. Hot pressing under 10MPa pressure for 0.5h, curing after forming, and obtaining a twill weave hemp fiber fabric template. The prepared twill weave hemp fiber fabric template was placed in a vacuum autoclave, under a nitrogen protective atmosphere, the pressure was 0.06MPa, and the heating rate was 3°C / min. Cooling at a rate to prepare a carbon template with a twill weave hemp fiber fabric structure. The carbon template of the prepared twill weave hemp fiber fabric structure remains in a vacuum of 1×10 -1 Pa, 1400 ℃ liquid-phase siliconizing reaction, obtained high-purity silicon carbide ceramics with sisal fiber fabric structure.

Embodiment 3

[0057] Take the linen fiber fabric with knitted structure purchased from the market or self-prepared by the existing weaving technology. After impregnating epoxy resin ultrasonically at room temperature, the linen fiber fabric is stacked into two layers of cloth by lamination. Hot-pressing under pressure for 5 hours, curing after molding, and obtaining the hemp fiber fabric template with knitted structure. The prepared hemp fiber fabric template with knitted structure was placed in a vacuum hot-press furnace, under an argon protective atmosphere, the pressure was 0.03MPa, and the heating rate was 20°C / min, kept at 1800°C for 1h, cooled with the furnace, and prepared A carbon template out of the remains of a hemp fiber fabric with a knitted structure. The carbon template of the prepared knitted hemp fiber fabric remains in a vacuum of 1×10 -1 Pa, 1600 ℃ liquid-phase siliconization reaction, obtained silicon carbide ceramics with knitting structure flax fiber fabric.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a method for preparing a hemp fabric construction morph-genetic ceramic composite material, comprising the following steps: preparing a hemp fabric construction formwork or hemp fabric construction / precursor composite formwork; placing into a vacuum hot-pressing furnace; heating the two formworks at vacuum or inert gases protective atmosphere; cooling in the furnace or cooling by temperature control to prepare a morph-genetic carbon formwork or the morph-genetic ceramic composite material; performing liquidoid silicon seepage or gases phase silicon seepage on the morph-genetic carbon formwork at vacuum or inert gases protective atmosphere; repeatedly dipping precursor solution or precursor sol on the morph-genetic carbon formwork, a morph-genetic carbonization composite material, a nitride ceramic composite material or an oxidization ceramic composite material; performing carbon heat returning reaction to obtain the hemp fabric construction morph-genetic ceramic composite material. The preparation method of the invention not only leads the morph-genetic material to inherit manually manufactured arrangement manner and arrangement structure of hemp fabric and multi-layer multi-dimensional intrinsic fine structure of the hemp fabric organism, but also endows new functions thereof.

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 ceramic composite material with a hemp fiber fabric structure. Background technique [0002] At present, the known technologies of oxide, carbide and nitride ceramic composite materials with relic structure include: 1) "Research Concept and Research Progress of Relic Materials" published in Materials Herald [J], 2006(10): 57 "; 2) Advances in Chemistry [J], 2008, 20(6): 989-1000 "Preparation of Wood Ceramics by Biological Template Method"; 3) Ningxia Engineering Technology [J], 2006, 6: 130-134 "Preparation of TiN / C Porous Ceramics Using Wood as a Template"; 4) Master's Degree Thesis of Kunming University of Science and Technology, 2006, 19: 1-88 "Preparation and Characterization of Tobacco Rod-Based Wood Ceramics"; 5) Patent "Ecological Ceramics, Metal Composite Preparation method ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): C04B35/565C04B35/01C04B35/10C04B35/58C04B35/622
Inventor 王俊勃杨敏鸽申明乾贺辛亥付翀姜凤阳张金彦王琼
Owner XI'AN POLYTECHNIC UNIVERSITY
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