1、 Current status of domestic development researchIn 2002, China officially included continuous basalt fibers in the national 863 plan. Three shareholders, including Shenzhen Rujin Carbon Materials Technology Co., Ltd. (jointly established by Shenzhen Golden House Vacuum Technology Co., Ltd. and a Russian military materials research institute) and a large private enterprise, Hengdian Group, invested 20 million RMB to establish Hengdian Group Shanghai Rujin Basalt Fiber Co., Ltd. in December 2003, After nearly two years of technological development, Hengdian Group Shanghai Rujin Basalt
Fiber Co., Ltd. adopts innovative production technology and a "one-step" process to achieve research and development results in the production of continuous basalt fibers using pure natural basalt (without any additives) as raw materials, and has successfully achieved industrial production. The company not only has mastered the production technology of electric furnaces, flame protection, and gas electricity combination, but also produces multi axial fabric resin matrix composites and basalt fiber sheets, and other composite materials that have been recognized by military and civilian leaders.

Experts and scholars have calculated the development plan of basalt continuous fibers: in 2010, the national production of basalt continuous fibers was 10000 tons, and in 2020, it was 70000 to 100000 tons.
2、 Performance of Basalt Dimension (CBF)-Environmentally friendly materials.CBF has a pure natural nature that is not artificially synthesized, coupled with a harmless production process and a long product life, making it a low-cost, high-performance, and ideal new type of green and environmentally friendly material. Due to the absence of boron and other alkali metal oxides during the basalt roasting process, there are no harmful substances discharged from the pool furnace emissions during the CBF manufacturing process, no harmful gases are emitted into the atmosphere, and no industrial waste or toxic substances pollute the environment. Basalt fiber can largely replace glass fiber and is widely used in various fields such as aerospace, petrochemical, automotive, and construction. Therefore, CBF is known as a new type of environmentally friendly fiber in the 21st century that "volcanic rock transforms into silk" and "turning stone into gold".
-Materials with excellent functionality.CBF is the fourth largest high-tech pillar after carbon fiber, aramid fiber, and ultra-high molecular weight polyethylene fiber. It can replace carbon fiber and aramid fiber under many conditions, and in some cases, its dimensional performance is even better than the above two types. The exceptional performance of basalt fibers and their products is manifested in the following aspects:
(1) Significant high-temperature resistance and thermal stability. The usage temperature range of CBF is from -230 ℃ to 880 ℃, which is much higher than aramid fiber, alkali free glass fiber, asbestos, rock wool, stainless steel, and close to silicon fiber and aluminum silicate. It has good thermal stability and remains unchanged at 500 ℃. At 900 ℃, the original weight loss is only 3%.
(2) Lower thermal conductivity. The thermal conductivity coefficient of CBF is 0031 V/m.k-038 V/m.k, which is lower than that of aramid fiber, aluminum silicate fiber, alkali free glass fiber, rock wool, silicon fiber, carbon fiber, and stainless steel.
(3) High elastic modulus and tensile strength. The elastic modulus of CBF is 9100kg/m2-11000 kg/m2, which is higher than that of alkali free glass fiber, asbestos, aramid fiber, polypropylene fiber, and silicon fiber. The tensile strength of CBF is 3800-4800 MPa, which is higher than that of large tow carbon fibers, aramid fibers, PBI fibers, boron fibers, and alumina fibers, and is equivalent to that of glass fibers.
(4) Good chemical stability. CBF has better acid and alkali resistance than aluminum borosilicate fibers [6-7], and its durability, weather resistance, UV resistance, water resistance, and oxidation resistance are all comparable to natural basalt stones.
(5) The sound absorption coefficient is relatively high. The sound absorption coefficient of CBF is 0.9-0.99, which is higher than that of alkali free glass fiber and silicon fiber. It has excellent wave transmission and certain absorption properties, excellent sound absorption and sound insulation performance, and good stealth performance, making it a barrier material.
(6) Good electrical insulation and dielectric properties. The specific volume resistance of CBF is 1 × 1012 Ω - m is significantly higher than alkali free glass fiber and silicon fiber, with a volume charge rate of one order of magnitude higher than that of electrically insulated E-glass fiber, and a dielectric loss angle tangent of 50% higher.
(7) Low moisture absorption. The soaking ability of CBF is less than 0.1%, lower than that of aramid fiber, rock wool, and asbestos.
(8) Natural acid salt solubility. It has good dispersibility with cement and concrete, strong adhesion, consistent coefficient of thermal expansion and contraction, and good weather resistance.