Views: 35 Author: Site Editor Publish Time: 2021-12-16 Origin: Site
Glass fiber is a kind of new inorganic nonmetallic material with superior performance. It is a composite material widely used in modern industry and also a new material that is encouraged to develop in China.
At present, China has formed a complete industrial chain of glass fiber (raw yarn), glass fiber products, and glass fiber composite materials, which is divided into three areas: upper, middle, and lower. Upstream provides necessary raw materials for glass fiber production, involving ore mining, energy, chemical, and other industries. Glass fiber production is located in the middle of the industrial chain, through the use of upstream raw materials, to the unique process, the production of glass fiber yarn, glass fiber textile, non-woven products, these products after further processing, become the terminal composite products. Downstream industries involve infrastructure, environmental protection, energy-saving, and new energy, transportation, and so on.
In the cost composition of glass fiber products, the upstream raw material supply of glass fiber is relatively abundant, and the cost is relatively large.
The upstream raw materials of glass fiber are mainly pyrophyllite, kaolin, limestone, and other ore raw materials, which are manufactured by high-temperature melting, wire drawing, winding, weaving, and other processes. Glass fiber products and glass fiber composite materials are used in downstream industries.
Quartz sand and pyrophyllite in China have great resource advantages and little price variability, which has little impact on the whole glass fiber industry.
Power energy is the second most important factor in fiberglass production, mainly natural gas and platinum-rhodium consumables. In the process of producing glass fiber, chi Kiln wire drawing enterprises have a strong dependence on heating energy, such as natural gas, electricity, and production materials, such as platinum-rhodium alloy leakage plate.
Fiberglass products are mainly divided into non-woven products, textile products. Non-woven products refer to the use of non-woven (mechanical, chemical, or thermal methods) made of glass fiber products, mainly including glass fiber felt (such as short-cut felt, continuous felt, needle felt, etc.), ground fiber.
Glass fiber composite material classification:
Glass fiber can be divided into alkali-free, medium alkali, high alkali, and alkali-resistant glass fiber by composition. Among them, non-alkali glass fiber occupies the mainstream of the market, and the production capacity accounts for more than 95%.
According to the size of monofilament diameter classification, can be divided into roving, spinning, and electronic yarn, and the other three series. Among them, roving is often compounded with resin to make glass fiber reinforced plastics (FRP); Spun yarn can be made into glass fiber textile products; Electronic yarn is woven glass fiber cloth, mainly used for the manufacture of printed circuit board raw material copper-clad plate.
In terms of the ratio of production capacity, the ratio of roving production in China is about 70%-75%, but with the elimination and adjustment of roving capacity, the ratio of roving gradually decreases.