Glass fiber (original name in English: glass fiber or fiberglass) is an inorganic non-metallic material with excellent performance. It has a wide variety of advantages. The advantages are good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength, but the disadvantage is Brittle, poor wear resistance. Glass fiber is usually used as a reinforcing material in composite materials, electrical insulation materials and thermal insulation materials, circuit boards and other fields of the national economy.
What is the main purpose of Fiberglass Roving ?
Glass fiber yarn is mainly used as electrical insulation material, industrial filter material, anti-corrosion, moisture-proof, heat insulation, sound insulation, shock absorption material, and can also be used as a reinforcing material. The use of glass fiber yarn is far more extensive than other types of fibers to make reinforcement Plastic, glass fiber yarn or reinforced rubber, reinforced plaster, reinforced cement and other products. Glass fiber yarn is coated with organic material to improve its flexibility and used to make packaging cloth, window screening, wall covering, covering cloth, and protective clothing. And insulation and sound insulation materials.
How to distinguish the quality of Fiberglass Roving ?
Glass fiber is made of glass as raw material and processed by various molding methods in a molten state. Generally divided into continuous glass fiber and discontinuous glass fiber. On the market, more continuous glass fibers are used. There are two main products of continuous glass fiber. One is medium-alkali glass fiber, code-named C; the other is alkali-free glass fiber, code-named E. The main difference between them is the content of alkali metal oxides. Medium-alkali glass fiber is (12±0.5)%, and alkali-free glass fiber is <0.5%. There is also a non-standard glass fiber product on the market. Commonly known as high alkali glass fiber. The content of alkali metal oxides is above 14%. The raw materials for production are broken flat glass or glass bottles. This kind of glass fiber has poor water resistance, low mechanical strength and low electrical insulation, which is not allowed to be produced by national regulations.
Generally qualified medium-alkali and alkali-free glass fiber yarn products must be tightly wound on the bobbin, and each bobbin is marked with the number, strand number and grade, and the product inspection verification should be carried out in the packing box. The content of product inspection and verification includes:
1. The name of the manufacturer;
2. The code and grade of the product;
3. Number of this standard;
4. Stamp with a special seal for quality inspection;
5. Net weight;
6. The packaging box should have the factory name, product code and grade, standard number, net weight, production date and batch number, etc.
Post time: Aug-09-2021
