What Is Glass Fiber Reinforced Concrete?

Glass fiber (formerly known as glass fiber) is an inorganic non-metallic material with excellent performance. There are many types. The advantages are good insulation, strong heat resistance, good corrosion resistance and high mechanical strength. Poor abrasion resistance. It is made of seven kinds of ores including pyrophyllite, quartz sand, limestone, dolomite, boronite, and boronite as raw materials through high temperature melting, drawing, winding, weaving and other processes. Micrometer to twenty micrometers, equivalent to 1 / 20-1 / 5 of a hair filament, each bundle of fiber filaments is composed of hundreds or even thousands of monofilaments. Glass fiber is generally used as a reinforcing material in composite materials, electrical insulation materials and thermal insulation materials, circuit boards and other fields of the national economy.

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Glass fiber (English name: glass fiber) is a kind of excellent

Melting point glass is an amorphous material. It does not have a fixed melting point. It is generally considered that its softening point is 500 ~ 750 ° C.

Boiling point 1000

Density: 2.4 ~ 2.76g / cm3

When glass fiber is used as a reinforcing material for reinforced plastics, the biggest feature is its high tensile strength. The tensile strength is 6.3 to 6.9 g / d under standard conditions and 5.4 to 5.8 g / d under wet conditions. The density is 2.54g / cm3. Good heat resistance, no effect on strength when temperature reaches 300 . It has excellent electrical insulation and is a high-level electrical insulation material. It is also used for thermal insulation materials and fire shielding materials. Generally only corroded by concentrated alkali, hydrofluoric acid and concentrated phosphoric acid.

Its main ingredients are

Raw materials and their applications: Glass fibers are more resistant to temperature than organic fibers, non-combustible, and resistant to corrosion.

Glass fiber itself has good insulation, high temperature resistance, and good corrosion resistance. It is also used by 3D printing technology ^[2]

Glass fiber can be divided into continuous fiber, fixed-length fiber and

There are two types of glass fiber production processes: two forming-crucible drawing method, and one forming-pond kiln drawing method.

The crucible drawing method has many processes. First, the glass raw material is melted into a glass ball at a high temperature, and then the glass ball is melted a second time, and the glass fiber yarn is drawn at a high speed. This process has various disadvantages such as high energy consumption, unstable molding process, and low labor productivity, and is basically eliminated by large glass fiber manufacturers.

Glass fiber process flow diagram

Glass fiber has high tensile strength and small elongation (3%). The test methods include: GB / T14338-1993 Test method for crimpability of synthetic short fiber, GB / T 15232-1994 Textile glass fiber mat. Determination of tensile breaking strength GB / 7689.5 Determination of tensile breaking strength and elongation at break of GB / 7689.5 glass fiber, GB T15232-1994 Determination of tensile breaking strength of textile glass fiber felt, GB / T 7689.5-2001 | Test methods for reinforced woven fabrics Part 5: Glass Measurement of fiber tensile strength and elongation at break, etc. The single fiber tensile performance test shall use a high-strength and high-modulus fiber tensiometer capable of testing glass fibers.

1. After contact with eyes, rinse immediately with plenty of water and seek medical advice.

2. Wear appropriate protective clothing.

3. Do not breathe dust.

4. Avoid contact with skin and eyes.

Glass fiber products are widely used in various fields of the national economy. Among them, electronics, transportation and construction are the three main application fields, and they also represent the development trend of the world's glass fiber industry in the next few years.