PPE

Application of glass fiber in safety shoes

FRP is a kind of glass fiber composite material, its comprehensive performance is better, so the product is widely used, involving more than 20 industries, almost covering all sectors of the national economy. Among them, chemical industry, construction, electric power, light industry, petrochemical industry, mechanical and electrical industry, automobile and other industries have the largest number of applications. China’s advanced glass fiber composites have been widely used in the aviation industry. At present, they are used in both civil aircraft and military aircraft

the reason why glass fiber is very popular in this field is that as a new functional material and structural material, it has a series of excellent characteristics such as high temperature resistance, corrosion resistance, high strength, small elongation and good insulation. Glass fiber is a kind of inorganic non-metallic material with excellent performance. 1t takes natural ore as raw material. After scientific calculation and reasonable proportion of each raw material composition, it carries out grinding homogenization, high temperature melting, wire drawing, winding, weaving and other processes, and finally forms various products. The diameter of glass fiber monofilament ranges from a few microns to more than 20 microns, which is equivalent to 1 / 20-1 / 5 of a hair. Each bundle of fiber precursor is composed of hundreds or even thousands of monofilaments

glass fiber is characterized by high strength, high modulus of elasticity, low elongation, electrical insulation, corrosion resistance and other advantages. 1t is usually used in various fields of national economy as reinforcement, electrical insulation and thermal insulation materials in composite materials. Glass fiber reinforced plastics is a composite material composed of thermoplastic resin and glass fiber, carbon fiber, polyamide fiber, etc. Usually, the mixture of these materials is melted and mixed into granules, and injection molding is adopted. There are also long fibers made of sheet forming materials, molded with a press sheet. The former is to improve the heat resistance, dimensional stability, impact strength or electrical conductivity of various resins with fiber reinforced materials, while the latter is to manufacture large-scale products, and pay attention to the influence of fiber arrangement direction and content. A variety of thermoplastic resins are used, such as as as, ABS, PA, PBT, PC, pet, POM, PPS, etc., and high-performance engineering resins are used according to their different characteristics

the application of glass fiber in safety shoes industry, in recent years, due to the trouble of security inspection, steel safety shoes are gradually replaced by other non-magnetic materials, and the application of glass fiber reinforced plastic as safety shoes is an ideal choice. At present, many companies have developed glass fiber safety shoes, through a large number of experimental research and development, and final product testing, finally screened out the ideal formula, To produce high quality explosion-proof glass fiber safety shoes

all indexes of explosion-proof glass fiber safety shoes toe fully meet the requirements of en-csa-ansi standard for safety shoes. 1t can be heat resistant 200 ℃, cold resistant – 40 ℃, acid and alkali resistant. 1t can meet the needs of footwear production process and is suitable for harsh climate. The results show that the glass fiber safety toe cap is very environmentally friendly and does not need to be recycled; With anti-static function, and anti bacteria, non-toxic, no volatile objects. 1n addition, it has the advantages of ultra-thin, safety and no deformation, which can absorb and decompose the impact force. When encountering a great impact force, the toe cap will crack radially, and will not be concave and deformed like the steel head, so it will not hurt the foot, thus playing an excellent protective role

in the production of safety toe cap, steel die is used for steel toe cap, and the cost of die for changing shape is higher, but the cost of die for FRP toe cap is lower. For shoe factories, the process does not need to be changed, so it can be easily applied. Moreover, compared with steel, aluminum and other alloy toe caps, FRP toe caps are easier to adhere to materials, and processing is more convenient. 1n terms of end-user applications, in addition to enjoying the basic safety features, the wearer will feel more comfortable due to the lighter weight of the glass fiber reinforced plastic toe cap, and will not lose the sense of balance due to the heavy head and light heel

in addition, some glass fiber elastic mats are developed by using the good resilience of glass fiber reinforced plastics. The glass fiber elastic mats can be used alone or combined in ordinary insoles. Glass fiber elastic pad is molded with standard foot shape, which has good function of correcting walking posture. After moisture absorption and perspiration technology, the shock absorbing elastic insole has good effects of shockproof, antibacterial, deodorization, perspiration, ventilation and comfortable foot feeling, which is suitable for all kinds of shoes. The biggest advantage is its rebound function, so that the wearer’s foot force is uniform, and because the glass fiber in the FRP is crisscross arrangement, it has a strong anti nail puncture effect

at present, the global concept of environmental protection has been further strengthened. Due to the close fit between steel toe cap and leather or lining material, it is difficult to separate and recycle in garbage disposal. However, the material of glass fiber reinforced plastic toe cap and vamp can be naturally decomposed, which is in line with the trend of environmental protection. Glass fiber reinforced plastic elastic insole also plays the role of stab prevention in safety shoes. 1ts corrosion resistance, oxidation resistance and excellent rebound non deformation characteristics will be more and more popular in the industry

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