Check patentability & draft patents in minutes with Patsnap Eureka AI!

a b 4 C fiber mat and preparation method thereof

A technology of fiber felt and activated carbon fiber felt, which is applied in the field of B4C fiber felt and its preparation, can solve the problems of complex production process, high cost of reaction equipment, long cycle, etc., and achieve complete reaction process, easy control of reaction process and easy price Effect

Active Publication Date: 2022-04-19
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method of producing boron carbide fibers is chemical vapor deposition (CVD), which not only has a complex production process and a long cycle, but also the cost of reaction equipment is too high

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • a b <sub>4</sub> C fiber mat and preparation method thereof
  • a b <sub>4</sub> C fiber mat and preparation method thereof
  • a b <sub>4</sub> C fiber mat and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment adopts activated carbon fiber felt (carbon content ≥ 90.0%, Jiangsu Sutong Carbon Fiber Co., Ltd.), magnesium powder (purity ≥ 99.9%, Changsha Tianjiu Metal Material Co., Ltd.) and diboron trioxide (purity ≥ 98.8%, Xi’an City You Li Electronic Chemical Co., Ltd.) as raw material, anhydrous MgCl 2 (Tianjin Fuchen Chemical Reagent Factory) is molten salt. According to the mass percentage, the active carbon fiber felt in the raw material is 4.1%, the diboron trioxide in the raw material is 47.3%, the magnesium powder in the raw material is 48.6%, and the raw material and MgCl 2 The mass ratio is 1:4.

[0033] (1) As attached figure 2 , according to the above mass percentage, grind and mix the weighed boron trioxide and magnesium powder in a mortar; MgCl 2 Add in the mixture of boron trioxide and magnesium powder for mixing; weigh half of the mass of boron trioxide, magnesium powder and MgCl 2 The mixture is placed in the crucible, and then the activated...

Embodiment 2

[0038] With embodiment 1, but different from embodiment 1 is Na 2 B 4 o 7 It is molten salt, calculated by mass percentage, activated carbon fiber mat is 3% in the raw material, diboron trioxide is 42% in the raw material, magnesium powder is 55% in the raw material, the raw material and Na 2 B 4 o 7 The mass ratio is 1:3.

Embodiment 3

[0040] Same as Example 1, but different from Example 1, NaCl is the molten salt. In terms of mass percentage, activated carbon fiber felt is 3% in the raw material, boron trioxide is 50% in the raw material, and magnesium powder is 47% in the raw material. , the mass ratio of raw material to NaCl is 1:4.

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a B 4 C fiber felt and preparation method thereof, is characterized in that, comprises raw material and molten salt auxiliary agent, and described raw material comprises activated carbon fiber mat, diboron trioxide and magnesium powder, and described molten salt auxiliary agent comprises MgCl 2 , NaCl, Na 2 B 4 o 7 or K 2 CO 3 , the B 4 C fiber felt is made of activated carbon fiber felt as a template, and is made by molten salt assisted sintering method. B prepared by the present invention 4 C fiber felt has good oxidation resistance and high mechanical strength while maintaining the porous, large aspect ratio and rich three-dimensional morphology of activated carbon fiber felt. The preparation process of this method is simple, the reaction process is controllable, and the obtained The yield is high, and it can be used to prepare ceramic materials, antioxidant materials or adsorption / wave-absorbing materials in high-temperature environments.

Description

technical field [0001] The invention belongs to the technical field of inorganic non-metallic materials, in particular to a B 4 C fiber felt and its preparation method. Background technique [0002] Boron carbide (B 4 C) Not only as a material second only to diamond and cubic boron nitride in hardness, but also has many other excellent physical and chemical properties, including low density, high melting point, high Young's modulus, good hot spot characteristics, high neutron absorption cross section, high thermal conductivity Rate, low thermal expansion coefficient, high Seebeck coefficient, chemical stability, acid and alkali resistance, oxygen absorption capacity, etc. Boron carbide is used in protective devices such as tank armor and helicopters in the defense industry, control rods and shielding systems in the nuclear power industry, nozzles and hard material knives in the wear-resistant field, catalytic carriers and differential thermocouples in thermoelectric system...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/991
CPCC01B32/991C01P2004/03C01P2002/72
Inventor 丁冬海种小川肖国庆任耘
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com