From:胡显奇,玄武岩纤维在建筑和 基础设施中的应用 胡
Tensile Property
1、Obviously, stress and strain are linear relationship, there is no yield stage and strengthening phase like ordinary steel. 2、 The maximum tensile strength is about 600Mpa , which is about 3 times of ordinary steel. 3、Modulus of elasticity is one fourth of ordinary steel.
Factors affect performance of basalt fiber during preparation

Basalt material particles should not be too large, the appropriate average particle size is in 2.5 ~ 3.5 mm . Put Basalt in the furnace at first, then heat up the electric furnace and raw materials at the same time ,rising uniformity and quickly. Basalt melt temperature at around 1350 ℃, viscosity in 64 pa s., basalt can form a long fiber, Below this temperature, do not make a silk ; higher than the temperature, produce sheetflood phenomenon.
Join wire forming BFSWC（ basalt fiber-steel wires composite 玄武岩纤维——钢丝复合筋）
1、Join wire can significantly improve the modulus of elasticity, and within a certain range, the biger rate wire volume of the amount is , the greater tensile modulus of elasticity is. 2、Enhance ductility.
From: Zhang yuanzhi， Mechanical Property of Unidirectional Basalt Fiber Composites with Hole
Reduce the cost. Popular application ,such as using as road material.

Compared with other fiber materials ————High strength, thermal stability and etc。
From:石钱 华,国外连续 玄武岩纤维 的发展及其 应用
Good properties in many ways
Physical Properties
china ukraine
russia others
Definition
Basalt
fiber :Put the basalt in the melting furnace after 1500℃ and melt, and then through the drawing made of continuous fiber materials, processing process need not add any additives.it is currently the only a pollution-free green environmental protection mineral fiber.
The influence of the Diameter to elastic modulus
From this chart， with the increase of the diameter, modulus of elasticity goes down。
From: Zhang yuanzhi， Mechanical Property of Unidirectional Basalt Fiber Composites with Hole


Effective resistance to high and low temperature properties(- 270 ℃ ~ 780 ℃).
Effective thermal shock resistant stability, 500 ℃ still don‘t change. Outstanding strength, elastic modulus, basalt fiber tensile strength for 3800 MPa ~ 4840 MPa, high elastic modulus up to 79 ~ 93 Gpa. Pure natural basalt fiber color general for brown, some like gold. High temperature resistance（650 ℃ ）, resistance to radiation, sound insulation， suitable for all kinds of environment using superior performance.
Production status

Global basalt fiber production is about 6500 t, about 2500 t is made in China, accounting for the world by more than a third. Russia, Ukraine 1500 t, 1000 t. South Korea, Austria, Belgium, a total of 1500 t.
Background： why develop basalt fiber?

BF, in addition to high technology fiber high strength, high mod ulus characteristic, has good temperature resistance, oxidation resistance, resistance to radiation, insulation sound insulation , filterability, and compression strength and shear strength is hi gh. It is suitable for all kinds of environment using superior perform ance ,it is a kind of pure natural inorganic non-metallic materia ls, meeting the national economy basic industry development n eeds of the new basic materials and high technology fibers. The national defense construction, major engineering and the upgra ding of the industrial structure has an important role.
Production Preparation
70
SiO2 for network formation. Acid oxide and basic oxide ratio is between 3 ~ 6.5,and acid modulus will affect its resistance Long degree and chemical stability. Iron makes fiber into bronze. K2O, MgO, TiO2 can improve water repellency.

Thermostability
1、In 300 ℃ before, the Influence of temperature is very small. 2、Between 400 ℃ ~ 500 ℃ ,the thermostability goes down significantly. 3、Using temperature should not exceed 650 ℃.
60
50 40 30 20 10 0
60 45
Raw material composition
Min（%） 19 12 5
15
6
Max（%） 12 3 7
0.9 2
2.5
6
2 3.5
Mode of Production
BUT, The world of BF stable production technology are usually stay in 200 hole drawing leakage plate primary level producing department
1、Basalt fiber involves the main production fiacilities including fiber melting furnaces and drawing leakage plate, etc. 2、At present, the production of basalt fiber mainly adopts full electric Furnace and electric Furnace.