设为首页 加入收藏 联系方式

产品分类

联系我们

联系人:寇经理

电话: 13275491234

电话:0539-8835668

0539-8835669

地址: 山东省临沂市河东经济技术开发区

carbon composite materials

发布人:临沂沂林木托盘发布时间:2015/3/16浏览次数:1344次

Brief introduction of carbon and carbon composite materials

Carbon / carbon composite material English Name: C-C composite or editor carbon-carbon composite material, carbon / carbon composite materials, is refers to using carbon fiber (or graphite) and fabric as reinforcing material, carbon (or graphite) as matrix, all carbon composite prepared by carbonization processing and processing. It originated in 1958, the United States Chance-Vought company due to laboratory accidents, when the carbon fiber resin matrix composites cured over temperature, resin carbonization of carbon / carbon composites.

Carbon / carbon composite material is carbon fiber reinforced carbon composite material, has the advantages of light weight, good erosion resistance, good thermal shock resistance, high damage tolerance, high strength and strong in design characteristics, should now be used in aviation, aerospace, circuit level and solar grade silicon production, high-temperature furnace application field.

Features / performance of carbon carbon composites material editor (1): the physical properties of C/C composite material chemical composition after heat treatment at high temperature, the carbon is higher than 99%, low density, strong affinity, the carbon element of high melting point, high temperature resistance, corrosion resistance and thermal shock properties of hammer performance. Acid, alkali and salt.

(2) mechanical properties: the strength and elastic modulus of C/C composites are good, and the wear resistance is good.

(3) high temperature stability: the room temperature strength of the C/C composites can be maintained at a temperature of 2500 DEG C, which is not sensitive to thermal stress and has good ablation resistance.

(4) comprehensive performance evaluation: C/C composites at room temperature with good strength and modulus of elasticity, the production of C/C composite parts, can save materials and manufacturing costs, high security and reliability.

C/C / carbon carbon composites in the editing process to prepare C/C composite materials made of composite materials, should be based on the application of C/C requires the selection of what kind of fiber and matrix, and then determine the preparation of fiber and matrix material to be used.

(1) carbon fiber preparation technology: the preparation of carbon fiber raw materials used, the process is slightly different. If the pan is used, the acrylonitrile can be polymerized, spun, treated with flame resistance and carbonized to form a product. If the asphalt is used, the crude asphalt is refined, melt spun, and finally carbonized. The quality of C/C depends on the quality of carbon fiber.

(2) weaving technology: weaving technology can be divided into unidirectional weaving and multi-directional weaving. Multi directional braiding is at least two directions, up to a maximum of 11. Can also be divided into machine woven and hand woven. Machine knitting is subdivided into radial knitting and weft knitting. The machine knitting technology because of its easy pilling or fracture has not been used widely; weaving technology because of its products do not exist the shortcomings of knitwear and widely used at home and abroad. At present, the use of manual winding and weaving is more, more advanced is the needle weaving.

(3) dense Technology: after the formation of woven fabrics or textiles to be densified. The dense technology is divided into liquid impregnation, solid impregnation and gas impregnation technology. At present, the application of chemical vapor deposition.

(4) the development of process technology: chemical vapor infiltration process, computer simulation, high speed C/C composite compact technology, carbon bead / carbon process.

Carbon / carbon composite reference coefficient / carbon carbon composite material edit model apparent density flexural strength tensile strength expansion coefficient maximum use temperature

G/cm3 Mpa (Kgf/cm2) Mpa (Kgf/cm2) * 10-6/K C

JNC13 1.35 + 0.0785 (867) 80 (612) 0.5 vacuum environment 2500

JNC15 1.63 + 0.07130 (1326) 130 (765) 0.6

JNC17 1.68 + 0.07168 (1632) 150 (969) 0.7 protection atmosphere: 3000

http://www.jtmtp.com/