Fiber reinforced materials refer to the organic combination of fibers and matrix materials to improve the mechanical properties and durability of the materials. Fibers can be natural fibers, such as cotton, linen, silk, etc., or man-made fibers, such as carbon fiber, glass fiber, ceramic fiber, etc. Thermoplastic reinforced fiber materials must have the characteristics of high strength, small elongation, good rigidity, small creep, and excellent heat resistance. They mainly include: glass fiber, carbon fiber, basalt fiber, aramid fiber, etc. Among them, glass fiber is the most widely used and used in the largest amount, because glass fiber not only meets the above characteristics, but is also suitable for industrial production, is cheap, and has a wide range of sources. It is the most important raw material for fiber-reinforced thermoplastics (FRTP). Adding glass fiber to thermoplastics for reinforcement can increase its mechanical strength by 1 to 2 times, fatigue resistance by 1 to 2 times, creep resistance by 1 to 4 times, and heat deformation temperature by 10 to 20°C, making the brittleness The impact resistance of engineering materials is increased by 1 to 3 times, and the linear expansion can be reduced to ½ to ¼ of the original.

Fiber reinforced materials have the following advantages:

First, fiber reinforced materials have high strength and stiffness. The high strength and stiffness of the fiber can resist external stress and deformation, making the material stronger and more durable. For example, carbon fiber has high specific strength and specific stiffness, is lighter than steel, and has excellent corrosion resistance. It is widely used in aerospace, automobiles, sports equipment and other fields.

Secondly, fiber reinforced materials have good toughness and impact resistance. There are a large number of yielding and stretching processes between fibers in the structure of fiber-reinforced materials, which can absorb and disperse external impact loads, thereby reducing material damage and fracture. For example, glass fiber has good toughness and impact resistance and is widely used in construction, electronics, shipbuilding and other fields.

Thirdly, fiber reinforced materials have good heat resistance and corrosion resistance. The fibers of fiber reinforced materials can withstand the erosion of high temperatures and corrosive media, and are not prone to deformation and rupture. For example, ceramic fiber has high high temperature resistance and excellent corrosion resistance, and can be widely used in furnaces, chemical equipment and other fields.

Finally, fiber reinforced materials have good flame retardant properties. The fibers in fiber reinforced materials can prevent the spread of flames and reduce the generation of smoke and poisonous gases, effectively protecting personal safety. For example, flame-retardant fiber-reinforced composite materials are widely used in construction, transportation and other fields.

Fiber reinforced materials have a wide range of applications. In the aerospace field, fiber reinforced materials are used as structural materials for aircraft, rockets, satellites, etc. to reduce weight and improve flight performance. In the automotive industry, fiber reinforced materials are used to make parts such as body and chassis to improve crash safety and fuel economy. In the field of construction, fiber reinforced materials are used in decorative materials, thermal insulation materials, etc. to improve the quality and performance of buildings. Overall, fiber reinforced materials are an integral part of modern engineering technology. It can not only improve the mechanical properties and durability of materials, but also meet various special requirements and create a safer, energy-saving and environmentally friendly living environment for people.