Briefly introduce the application of glass fiber composite materials

2020-07-30 15:48:19 5

Compared with organic fiber, glass fiber has high temperature resistance, non-combustibility, corrosion resistance, good heat and sound insulation, high tensile strength, and good electrical insulation. But the disadvantage is brittleness and poor wear resistance.


Glass fiber is mainly used as electrical insulation material, industrial filter material, anti-corrosion, moisture-proof, heat insulation, sound insulation and shock absorption material. It can also be used as a reinforcing material to make products such as reinforced plastics or reinforced rubber, reinforced plaster and reinforced cement. Coating glass fiber with organic materials can improve its flexibility, and can be used to make packaging cloth, window screening, wall covering, covering cloth, protective clothing, and insulation and sound insulation materials.


Secondly, continuous glass fiber is an infinitely long fiber drawn by a mechanical drawing method through a platinum alloy plate, commonly known as a long fiber. Fixed-length glass fibers are non-continuous fibers made by rollers or airflow, also known as short fibers. Thin, short, flocculent fibers made by centrifugal force or high-speed airflow are called glass wool. The glass fiber can be processed into various forms of products, such as yarn, untwisted roving, chopped strand, cloth, tape, felt, plate, tube, etc.


Finally, E-grade glass fiber is the most commonly used and widely used in electrical insulation materials; S-grade is a special fiber, although the output is small, but it is very important, because it has super strength, it is mainly used for military defense, such as bulletproof boxes, etc.; C-grade is better than E Grade A is more chemically resistant and is used for battery separators and chemical filters; Grade A is alkaline glass fiber, which is used to produce reinforced materials.


1. The application of glass fiber in aerospace


The aerospace field gathers the latest scientific and technological achievements in the world today, and is also a concentrated display of the technological level of new materials. High-performance glass fiber composite materials have become an indispensable material in the aerospace industry. They are combined with aluminum alloys, steel and titanium alloys. Together, the three major metal materials have become the cornerstone of supporting the development of aerospace industry.


In aviation, both civil passenger aircraft and military aircraft use glass fiber composite materials. Glass fiber reinforced materials effectively reduce the quality of the aircraft, increase the commercial load, save energy, and achieve the effect of light weight and beauty. It has corrosion resistance, high temperature resistance, radiation resistance, flame retardant and anti-aging properties.

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2. Application of glass fiber in environmental field


The ecological environment is an ecological factor necessary for human survival and development. The Chinese government clearly pointed out that protecting the environment is a basic national policy that China has long adhered to. Because of its excellent properties, glass fiber is relatively important in the atmosphere, water, biology, soil and other environmental fields. Broad application.


For example, glass fiber filter materials have made considerable contributions in improving exhaust gas, composition, and reducing dust emissions. In addition, a glass fiber air filter paper is used in air conditioning systems to remove peculiar smells in the air, so as to achieve the purpose of air purification. Glass fiber has a good application in water environment and soil environment. It is combined with organic fiber materials and processed into geotechnical materials that can be used for soil erosion.


Third, the application of glass fiber in the field of biomedicine


Due to the excellent properties of glass fiber, the glass fiber fabric has the characteristics of high strength, non-hygroscopicity, and stable size, so it can be used as orthopedic and restoration materials, dental materials, medical equipment, etc. in the biomedical field.


Compared with traditional cotton plaster bandages, orthopedic bandages made of glass fiber fabric and various resins overcome the characteristics of low strength, moisture absorption, and unstable dimensions of the previous bandages. In addition, practice has proved that the glass fiber membrane filter has a strong ability to adsorb and capture white blood cells, has a high white blood cell removal rate, and has excellent operational stability. In addition, glass fiber has been used as a poison filter for respirators for many years. This filter material has very little resistance to air and has high bacterial filtration efficiency.


Fourth, the application of glass fiber in the field of building materials


Glass fiber reinforced cement


As we all know, the outstanding characteristics of cement-based building materials are high compressive strength and bending resistance, low tensile strength and impact resistance. With the in-depth research and development of glass fibers, the advent of alkali-resistant glass fibers, A new type of glass fiber reinforced cement material that overcomes the defects of the cement matrix is produced. This material can not only improve the bending and tensile strength of the cement matrix, but also improve its impact strength.


FRP has the main characteristics of light weight, high strength, heat resistance, alkali resistance, corrosion resistance and electrical insulation. The application of FRP in building materials includes lighting, sanitation, decoration, water supply and drainage, heating and ventilation, civil engineering, electrical, tooling and so on.


Five, the application of glass fiber in the automotive industry


Glass fiber and its composite materials have the advantages of light weight, high strength and corrosion resistance. Application in the automobile industry can reduce the weight of automobiles, improve automobile performance, reduce the manufacturing cost of automobile parts, speed up automobile assembly speed, and save fuel. Therefore, automobile manufacturers have always attached great importance to the use of glass fiber and its composite materials in automobiles.


Fiberglass and its composite materials can be used in automobiles to make: front end panels, air conditioning pipes, exhaust valves, engine hoods, bumpers, trunk covers, body panels, roof inner panels, chassis, seat components, dashboards, and silencers Filter, exhaust filter, fuel cylinder, interior materials, friction materials, etc.


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