The liquid glass is formed at 1600 ° C and from the mixing of mineral products (sand, kaolin, rock, limestone, calcium borate). The liquid is passed through the holes of the bushing and cooled simultaneously until the warps or the fibrous filaments of the glass with a diameter of 24-5 microns are produced. The warps are pulled together to form a “string string” or to be loosely coupled to form a “twist” and to ensure the bonding of the warp and glass protection against wear. They cover them with a “sink.”
Various types of glass reinforcements are produced by changing the construction instructions, which are various uses:
Type A glass fiber: Includes alkaline and anti-acid resistance.
Type E glass fiber (electric): With a lower percentage of alkali and stronger than glass of type A (alkaline), tensile and compressive strength and good stiffness, optimal electrical insulation and a relatively inexpensive price, the features of this booster are. Meanwhile, its resistance is relatively weak. In the polymer composite industry, the highest use of reinforcing fibers belongs to a variety of E-type glass fibers.
Type C (chemical) glass fibers: have the best resistance to chemical attack, and their main use is in the form of a teaspoon in the outer or inner layer of the multi-layered tubes or receptacles adjacent to chemicals and water, is.
Type S glass fiber is of high strength and is used most in the military industry.
ECR type glass fiber: In this type of glass, the electrical and mechanical properties of the E-type glass and the chemical resistance of the Type C glass are combined. This type of glass also has higher thermal and dielectric properties than glass E, and is environmentally friendly due to the lack of boron.
R, S, or T-type glass fibers are brand names for fibers that have tensile strength and tensile strength above the glass E and maintain their strength in better wet conditions. Due to the smaller diameter of their strands, this type of fiber has favorable shear bond strength (ILSS). S glasses in the United States are manufactured by OCF and AGY in the UK, R glass in Europe at the Vetrotex factory and T-glass in Japan are produced by the Nittobo collection. The use of these fibers is further developed in the field of aerospace and defense industries and is used in some ballistic applications.