carbon fiber composite material

What is carbon fiber composite material?

Carbon fiber composite material, mainly a kind of special fiber composed of carbon element, its carbon content varies with different types, generally more than 90%. Carbon fiber has the characteristics of general carbon materials, such as high temperature resistance, abrasion resistance, electrical conductivity, thermal conductivity, and corrosion resistance. The following is a detailed introduction of carbon fiber composite materials for everyone, and the use and advantages of carbon fiber composite materials. We hope to help friends who have such needs.

What is Carbon Fiber Composite?

In the large family of composite materials, fiber-reinforced materials have always been the focus of attention. Since the advent of glass fiber reinforced with glass fiber and organic resin, carbon fiber, ceramic fiber and boron fiber reinforced composites have been successfully developed and their performances have been continuously improved, making their composite materials field flourish. Let's take a look at the unique Carbon Fiber Composites below.

Second, carbon fiber composite structure

Carbon fiber is a kind of special fiber composed of carbon element. Its carbon content varies with different types, and it is generally more than 90%. Carbon fiber has the characteristics of general carbon materials, such as high temperature resistance, friction resistance, electrical conductivity, thermal conductivity, and corrosion resistance, but unlike general carbon materials, its shape has significant anisotropy, softness, and can be processed into various The fabric exhibits high strength along the fiber axis. Carbon fiber has a small specific gravity and therefore has a high specific strength.

Carbon fiber is made of man-made chemical fiber that has a high carbon content and does not melt in the heat treatment process, and is processed by heat-stabilized oxidation treatment, carbonization treatment, and graphitization.

Carbon fiber is a new material with excellent mechanical properties. Its specific gravity is less than 1/4 of that of steel. The tensile strength of carbon fiber resin composites is generally above 3500Mpa, which is 7 to 9 times that of steel, and its tensile elastic modulus is 23000. ~43000Mpa is also higher than steel. Therefore, the specific strength of CFRP is the ratio of the strength of the material to its density can reach 2000Mpa/(g/cm3) or more, while the specific strength of A3 steel is only about 59Mpa/(g/cm3), and its specific modulus is also higher than steel.

Third, the advantages of carbon fiber composite materials

1, high strength (5 times that of steel)

2, excellent heat resistance (can withstand temperatures above 2000 °C)

3, excellent thermal shock resistance

4, low thermal expansion coefficient (small deformation)

5, small heat capacity (energy saving)

6, the proportion of small (steel 1/5)

7, excellent corrosion resistance and radiation performance

Fourth, carbon fiber composite materials use

The main purpose of carbon fiber is to compound with a matrix of resin, metal, ceramic, etc. to make a structural material. Carbon fiber-reinforced epoxy composites, with their combined specific strength and specific modulus, are the highest among existing structural materials. In areas where there are stringent requirements for density, stiffness, weight, and fatigue characteristics, carbon fiber composite materials are advantageous in applications requiring high temperatures and high chemical stability.

Carbon fiber was produced in the early 1950s in response to the needs of cutting-edge science and technology such as rocketry, aerospace, and aviation. It is also widely used in sports equipment, textiles, chemical machinery, and medical fields. With the increasingly demanding requirements of cutting-edge technologies for the technical performance of new materials, scientists and technicians are constantly trying to improve. In the early 1980s, high-performance and ultra-high-performance carbon fibers emerged one after another. This is another leap forward in technology. It also marks that carbon fiber research and production have entered an advanced stage.

The composite material composed of carbon fiber and epoxy resin is an advanced aerospace material due to its small specific gravity, good rigidity, and high strength. Because each weight reduction of the spacecraft can reduce the launch vehicle by 500 kilograms. Therefore, the use of advanced composite materials in the aerospace industry is competing. There is a vertical landing fighter. The carbon fiber composite used by it has accounted for 1/4 of the weight of the whole aircraft and accounts for 1/3 of the weight of the wing. According to reports, the key components of the three rocket thrusters on the US space shuttle and the advanced MX missile launch tubes are made of advanced carbon fiber composite materials.

Today's F1 (World Formula One Championship) car, most of the body structure uses carbon fiber material. The top selling point of the top sports car is also the use of carbon fiber throughout the body to increase aerodynamic and structural strength. Carbon fiber can be processed into fabrics, felts, mats, belts, paper and other materials. In addition to the traditional use of carbon fiber in addition to thermal insulation materials, generally not alone, mostly as a reinforcing material added to the resin, metal, ceramics, concrete and other materials, constitute a composite material. Carbon fiber-reinforced composites can be used as aircraft structural materials, electromagnetic shielding electrification materials, artificial ligaments and other body replacement materials as well as for the manufacture of rocket shells, motor boats, industrial robots, automotive leaf springs, and drive shafts.

Editor's summary: The above is what the carbon fiber composite material is and the related introduction of the carbon fiber composite material use. I hope to help you have a better understanding of the carbon fiber composite material. If you still want to learn more about the relevant information, please continue to follow our website. Follow-up will present more exciting content.