An overview of the
Glass fiber (formerly known as Glass fiber) is a kind of inorganic nonmetallic material with excellent properties. It has many advantages, such as good insulation, strong heat resistance, good corrosion resistance and high mechanical strength, but its disadvantages are brittle and poor wear resistance. Glass fiber is usually used as reinforcing material in composite material, electrical insulation material and thermal insulation material, electric subgrade board and other fields of national economy.
1. Used for low temperature between -196℃ and high temperature between 300℃, with weather resistance.
2, non-adhesion, not easy to adhere to any substance.
3, resistant to chemical corrosion, can withstand strong acid, strong alkali, aqua aqua and various organic solvents corrosion.
4. Low friction coefficient is the best choice for oil-free self-lubrication.
5. Light transmittance up to 6 ~ 13%.
6. High insulation, anti-ULTRAVIOLET and anti-static.
7. High intensity. Good mechanical properties.
8. Drug resistance.
Fiberglass cloth is mostly used in hand paste process, and fiberglass reinforced checkers are mainly used in ship, storage tank, cooling tower, ship, vehicle, tank and building structure. Glass fiber cloth in the industry is mainly used in: heat insulation, fire, flame retardant. The material absorbs a lot of heat when it is burned by a flame and prevents the flame from passing through, trapping air.
1, according to the composition: mainly alkali, alkali free, high alkali (is the composition of alkali metal oxide in glass fiber classification), of course, there are also by other components of the classification, but too many varieties, not one by one.
2. According to the manufacturing process: crucible wire drawing and pool kiln wire drawing.
3. According to varieties: folded yarn, direct yarn, jet yarn, etc.
In addition, it is by single fiber diameter, TEX number, twist, wetting agent type to distinguish.
The classification of glass fiber cloth and the classification of fiber yarn are interlinked, in addition to the above, also includes: weaving method, gram weight, amplitude and so on.
The difference in material between fiberglass and glass
Glass fiber cloth and glass main material difference is not big, mainly because of the production of different material requirements, so there are some differences in the formula. The content of silica in plate glass is about 70-75%, and the content of silica in glass fiber is generally below 60%.
Glass is an inorganic material that has been fused at high temperature (above 800 degrees, daily glass is generally fused at 1100 degrees). , no chemical change occurs below the softening point temperature. Above the softening point temperature, it will only soften, melt or decompose without combustion.
Fiberglass cloth is the glass pulled into a very fine glass wire, the glass wire has a very good softness. Glass fibers are spun into yarn, which is then woven through a loom into fiberglass cloth. Because the glass wire is very thin, the surface area per unit mass is very large, so the temperature resistance is reduced. It's like using a candle to melt fine copper wire.
But glass doesn't burn. The combustion we can see is actually to improve the performance of the fiberglass cloth, which is coated on the surface of the resin material, or attached impurities. Pure glass fiber cloth or coated with some high temperature resistant coatings, can be produced refractory clothing, refractory gloves, refractory blanket a class of products. But if it comes into direct contact with the skin, the broken fiber will irritate the skin more and will be very itchy.
Matters needing attention
General conventional glass fiber monofilament diameter in 9-13 microns above, 6 microns below the glass fiber float, can directly into the lung tube, can cause respiratory diseases, so pay special attention to, 6 microns below is generally imported. Professional masks must be worn during production. Frequent contact may be inhaled into the lungs and cause pneumoconiosis.
If it is the body touched with glass fiber, the skin is not good allergy will itch, but generally will not have a big harm, the skin is not good may have a small package, that is allergic phenomenon, take some anti allergy medicine.
If it is difficult to remove clothes, pat them more often in windy areas. After washing and drying, it is easier to remove them by slapping them with branches. Pat them more often!