The story of “Making Stones into Gold†has now become a reality in the laboratory of the Xinjiang Institute of Physics and Chemistry at the Chinese Academy of Sciences. Based on the insulating material basalt fiber, the researcher used chemical vapor deposition technology to achieve the deposition and growth of different carbon nanomaterials on the surface of basalt fibers, which made them possess conductor characteristics.
This experiment was conducted by the Xinjiang Institute of Physics and Chemistry of the Chinese Academy of Sciences and the Leibniz Institute of Polymers in Dresden, Germany. Recently, the results of the study were published in the authoritative magazine Material Materials: Applied Science and Manufacturing.
Basalt fiber is a kind of fiber material made from basalt through the melt drawing process. Due to outstanding performance in strength, temperature range, production cost, corrosion resistance and environmental protection in production process, it is widely used in filter materials, building materials, fiber reinforced composite materials and other fields. Basalt ore belongs to insulating materials, and this property limits the application of corresponding fiber materials in the field of electrical conduction.
With the support of the National Natural Science Foundation of China, the National “Thousand People Project†and the Sino-German Research Cooperation Program (PPP), the Sino-German research team has tried to use basalt fiber as the base, using its own metal elements and using chemical vapor deposition. The technology enables the deposition and growth of different carbon nanomaterials on the surface of basalt fibers. In a recent experiment, they controlled the experimental conditions to "grow" high temperature pyrolysis carbon nanoparticle coatings or carbon nanotubes on the basalt surface in an efficient and controllable manner, realizing the transformation of the fiber from the insulator guide.
According to Ma Pengcheng, a researcher at the Xinjiang Institute of Physics and Chemistry, Chinese Academy of Sciences, this research has overturned the concept that traditional basalt fiber is an insulating material and realized the preparation of conductive basalt fiber; it is expected to increase the functional value of basalt fiber, further expand its application, and increase products. Added value. In addition, through a series of studies on the preparation methods of conductive basalt fiber materials, a new technology for the preparation of hierarchical structural fiber materials has been formed, which can adjust the interfacial strength of the composite materials and enhance the fiber strength. (Reporter Zhu Lan correspondent Liang Le)
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