What Are The Main Components Of Glass Fiber

Fiberglass is an inorganic non-metallic material with excellent performance. It has a wide variety. Its advantages are good insulation, strong heat resistance, good corrosion resistance and high mechanical strength, but its disadvantages are brittle and poor wear resistance. It is made from pyrophyllite, quartz sand, limestone, dolomite, bocalcite and brucite through high-temperature melting, drawing, winding, weaving and other processes. The diameter of its monofilament is several microns to 20 microns, equivalent to 1/20-1 /5 of a hair filament. Each bundle of fiber precursor is composed of hundreds or even thousands of monofilaments. Glass fiber is usually used as reinforcing material in composites, electrical insulation material, thermal insulation material, circuit board and other fields of national economy.

Main ingredients:

Its main components are silicon dioxide, aluminum oxide, calcium oxide, boron oxide, magnesium oxide, sodium oxide, etc. according to the amount of alkali in the glass, it can be divided into non alkali glass fiber (sodium oxide 0%~2%, belonging to aluminum borosilicate glass), medium alkali glass fiber (sodium oxide 8%~12%, belonging to sodium calcium silicate glass containing or without boron) and high alkali glass fiber (sodium oxide more than 13%, belonging to sodium calcium silicate glass).

Main raw materials:

Quartz sand, alumina and pyrophyllite, limestone, dolomite, boric acid, soda ash, mirabilite, fluorite, etc.

Production method:

One is to directly make molten glass into fiber; One is to make the molten glass into a glass ball or rod with a diameter of 20mm, and then heat and remelt it in various ways to make it into a glass ball or rod with a diameter of 3 ~ 80 μ M. The infinite fiber drawn by platinum alloy plate by mechanical drawing is called continuous glass fiber, which is generally called long fiber. Discontinuous fibers made by roller or air flow are called fixed length glass fibers, which are generally called short fibers. The fine, short and flocculent fibers made by centrifugal force or high-speed air flow are called glass wool. After processing, glass fiber can be made into various forms of products, such as yarn, untwisted roving, chopped precursor, cloth, tape, felt, plate, tube, etc. Glass fiber is divided into different grades according to its composition, properties and uses. According to the standard grade (see the table), Grade E glass fiber is widely used in Z, which is widely used in electrical insulation materials; Grade s is a special fiber. Although its output is small, it is very important. Because of its super strength, it is mainly used for military defense, such as bulletproof boxes; Grade C is more chemical resistant than Grade E, and is used for battery isolation plate and chemical poison filter; Class A is alkaline glass fiber, which is used to produce reinforcing materials.

characteristic:

1. high elasticity coefficient and good rigidity.

2. it has large elongation and high tensile strength within the elastic limit, so it can absorb large impact energy.

3. it is inorganic fiber, non combustible and good chemical resistance.

4. low water absorption.

5. good dimensional stability and heat resistance.

6. low price

matters needing attention:

1. after accidental contact with eyes, please immediately rinse with plenty of water and ask for doctor's advice.

2. wear appropriate protective clothing.

3. do not breathe dust.

4. avoid contact with skin and eyes.