Fiberglass composite materials refer to new materials formed by processing and shaping with fiberglass as the reinforcement and other composite materials as the matrix. Due to certain characteristics inherent in fiberglass composite materials, they have been widely applied in various fields.
Main Characteristics of Fiberglass Composite Materials:
Excellent Mechanical Properties: The tensile strength of fiberglass composite materials is lower than steel but higher than ductile iron and concrete. However, its specific strength is approximately three times that of steel and ten times that of ductile iron.
Good Corrosion Resistance: Through proper selection of raw materials and scientific thickness design, fiberglass composite materials can be used for a long time in environments containing acids, alkalis, salts, and organic solvents.
Good Thermal Insulation Performance: Fiberglass composite materials have the advantage of low thermal conductivity, making them excellent insulation materials. Therefore, they can achieve good insulation effects without the need for special insulation in cases of small temperature differences.
Low Thermal Expansion Coefficient: Due to the small thermal expansion coefficient of fiberglass composite materials, they can be used normally in various harsh conditions such as surface, underground, seabed, extreme cold, and desert environments.
Excellent Electrical Insulation: They can be used to manufacture insulators. Even under high frequencies, they maintain good dielectric properties. They also have good microwave transparency, suitable for use in power transmission and multiple lightning strike areas.
Development Trends of Fiberglass Composite Materials:
Currently, high-performance fiberglass has enormous development potential, especially high-silicon fiberglass with significant advantages. There are two main trends in the development of high-performance fiberglass: one focuses on higher performance, and the other emphasizes industrialization technology research of high-performance fiberglass, aiming to improve the process performance of high-performance fiberglass while reducing costs and pollution.
There are some deficiencies in material preparation: Some problems still exist in the preparation of high-performance fiberglass, such as glass crystallization, high density of original silk threads, and high cost, making it unable to meet the strength requirements in some special applications. When using thermosetting resins as matrices, the prepared composite materials face difficulties in secondary processing and recycling, as they can only be processed by cutting, and recycling can only be achieved through special chemical solvents and strong oxidants, with less than ideal results. Although degradable thermosetting resins have been developed, cost control is still necessary.
Various synthesis technologies are utilized in the synthesis process of fiberglass to prepare new types of fiberglass composite materials. In recent years, various surface technologies have been developed to modify the surface of fiberglass for special treatments, making surface modification a new trend in the development of fiberglass composite material preparation technology.
In the near future, global market demand, especially in emerging market countries, will maintain a relatively high growth rate. Leading companies in the industry will become more prominent. For example, Chinese fiberglass companies represented by Jushi Group will play a leading and guiding role in the global fiberglass industry in the future. Fiberglass composite materials have become one of the main raw materials in the automotive industry. The application of fiberglass thermoplastic materials is trending upwards due to their good economy and recyclability. Currently, the application scope of widely used fiberglass thermoplastic reinforced materials includes instrument panel brackets, front-end brackets, bumpers, and peripheral components of engines, covering most parts and substructures of the entire vehicle.
Apart from several major fiberglass production bases, small and medium-sized enterprises account for 35% of China's fiberglass industry output. They mostly have single varieties, weak technology, and employ over 90% of the total workforce. With limited resources and poor management of operational risks, they are the key and difficult points for the industry to implement strategic transformations. Efforts should be made to actively support and guide small and medium-sized enterprises to pursue synergistic development. By forming groups of small and medium-sized enterprises, strengthening cooperation and competition with the outside world, the goal of development can be achieved. With the mutual penetration of economies, competition among enterprises has shifted from individual fights to cooperation and alliances.
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Post time: May-07-2024
