Asbestos is the general term of natural fibrous silicious minerals, which is a silicate mineral fiber fireproof?panels of construction materials. It is the only natural mineral?fiber with good tensile strength, thermal insulation and corrosion resistance performance, thus it has a wide application. There are many kinds of asbestos, the three most common ones are chrysotile asbestos(white asbestos), amosite asbestos(brown asbestos) and crocidolite asbestos (blue asbestos), and the chrysotile asbestos is the most abundant, and commonly-used one. Glass fiber is an excellent inorganic nonmetallic material. The original name in English: glass fiber. Glass balls or discarded glass are raw materials of it. And it is rocessed by techniques of high temperature melting, wire drawing, winding, and weaving. Finally, it becomes various products. The diameter of glass fiber's monofilament is from a few microns to twenty microns which equals to the 1 / 20 to 1 / 5 of human hair. Each bundle of fiber precursors is composed of hundreds of or even thousands of monofilaments. Usually, it is used as reinforced materials,electric insulation materials, thermal insulations and circuit boards in complex materials, and is widely used in various fields of national economy. Glass fibers are twistless roving and textile gauze with different specifications and uses which are twisted. There are two kinds, namely alkali-free (R2O＜0.8%, Code E) and alkali (R2O12.0±0.47%, Code C). They are mainly used as reinforcing materials for hand lay-up, lamination, winding and spraying formation of glass?reinforced?plastics, as well as are contributors to the production of electronic insulation, composite, and fireproofing glass?fiber products.
Fiber glass contains glass?silk. Asbestos gauges are easy to be broken into pieces, you can not see glass in them. Gloves must be put on when holding or dealing with them to prevent them from sticking to your hands. Asbestos have advantages of acid and basic resistance, good insulation properity, and they are firm, almost unbreakable. Therefore, the industrial uses of it are more than 1,000. However, during the exploitation, processing and application of asbestos, there are dust nuisances. Asbestos are known to cause asbestosis of contacts, and now have been recognized in the world as carcinogen for humans.
Asbestos also known as "mountain cloth" is a commercial term that refers to silicate mineral products with high tensile strength, high flexibility, heat resistance, and chemical corrosion, electrical insulation as well as spinnability. It is the general term of natural fibrous silicate minerals. It includes two categories, a total of six kinds of minerals(serpentine asbestos, hornblende asbestos, actinolite asbestos, antholite asbestos, amosite asbestos, tremolite asbestos, etc.) Asbestos are made of fiber bundles, while fiber bundles are composed of long and narrow fibers which can be separated from each other. Asbestos, with properties of highly fire resistance, electrical insulation and thermal insulation, are important fireproofing, electrical insulation and thermal insulation materials. Glass?reinforced?plastics(FRP) also known as GRP, are fiber-reinforced plastics which generally refers to the matrix of glass fiber reinforced unsaturated polyester, epoxy resin and phenolic resin. Reinforced plastics, with glass fiber or its products as reinforced materials, refer to glass fibre reinforced plastics or glass?reinforced?plastics. Due to the different varieties of resin, there are polyester glass?reinforced?plastics, epoxy glass?reinforced?plastics, and phenolic aldehyde glass?reinforced?plastics. They are light and rigid, non-conducting, and corrosion-resistant. They have high mechanical strength, low recycling rate. Machine parts, cars and Ship hulls made of steel can be replaced by them.
