Basalt fiber is a continuous fiber made by high-speed drawing of platinum rhodium alloy wire drawing leakage plate after melting at 1450 ℃ ~ 1500 ℃. Similar to glass fiber, its performance is between high-strength s glass fiber and alkali free E glass fiber. The color of pure natural basalt fiber is generally brown, some like gold.

 

　　Basalt fiber products include:

 

　　1. Basalt fiber Twistless roving is a basalt fiber product made of multi strand parallel precursor or single strand parallel precursor without twisting,

 

　　2. Basalt fiber textile yarn is a yarn formed by twisting and merging several basalt fiber filaments, and the monofilament diameter is generally ≤ 9 µ M. Textile yarn can be divided into weaving yarn and other industrial yarn; Weaving yarn is mainly tube yarn and bottle shaped bobbin yarn.

 

　　3. Basalt fiber chopped yarn is a product made of continuous basalt fiber precursor. The fibers are coated with (silane) wetting agent. Therefore, basalt fiber chopped yarn is not only the preferred material for strengthening thermoplastic resin, but also the best material for strengthening concrete. Basalt is a high-performance volcanic rock component. This special silicate makes basalt fiber have excellent chemical resistance, especially alkali resistance. Therefore, basalt fiber is an excellent material to replace polypropylene (PP) and polyacrylonitrile (Pan) for strengthening cement concrete; It is also a competitive product to replace polyester fiber and lignin fiber for asphalt concrete, which can improve the high-temperature stability, low-temperature crack resistance and fatigue resistance of asphalt concrete.

 

　　4. Basalt fiber expanded yarn is made by passing basalt fiber yarn through an expanded yarn machine with high performance. The forming principle is: the high-speed air flow enters the forming and expansion channel to form a turbulent flow, which is used to disperse the basalt fiber to form a terry fiber, so as to endow the basalt fiber with bulkiness and produce expanded yarn.

 

　　5. Fiber cloth

 

　　6. Basalt fiber felt

 

　　7. Basalt fiber composites

 

　　Compared with high-tech fibers such as carbon fiber, aramid fiber and ultra high molecular weight polyethylene fiber (UHMWPE), basalt fiber not only has the characteristics of high strength and high modulus of high-tech fiber, but also has excellent properties such as good high temperature resistance, oxidation resistance, radiation resistance, thermal insulation and sound insulation, good filtration, high compression strength and shear strength, and is suitable for use in various environments, It is a pure natural inorganic non-metallic material with good cost performance. It is also a new basic material and high-tech fiber that can meet the development needs of basic industries of the national economy.

 

　　Basalt fiber and its composites can better meet the needs of structural materials in national defense construction, transportation, construction, petrochemical industry, environmental protection, electronics, aviation, aerospace and other fields, and play an important role in promoting national defense construction, major projects and industrial structure upgrading. It is not only a green material meeting the requirements of ecological environment in the 21st century, but also a competitive new material industry with sustainable development in the world's high-tech fiber industry. In particular, China has owned the basalt fiber manufacturing technology and process with independent intellectual property rights, and has reached the international leading level with the post development advantage of "catching up from behind". Therefore, it is undoubtedly of great significance to vigorously develop the basalt fiber and its composite industry.