Hollow glass microsphere
Hollow glass microspheres are specially processed glass microspheres, which are characterized by smaller densities and poorer thermal conductivity than glass microspheres. It is a new type of light material of micron scale developed in the 1950s and 1960s. Its main component is borosilicate. Hollow glass microbeads are characterized by high compressive strength, high melting point, high resistivity, low thermal conductivity and thermal shrinkage coefficient. They are regarded as "space age materials" in the 21st century. Hollow glass beads has obvious weight and sound insulation heat preservation effect, make the products have very good crack resistance and processing performance, is widely used in glass fiber reinforced plastic, artificial marble, man-made agate and other composite materials, and the oil industry, aerospace, new high-speed trains, cars, ships, heat insulation coatings, and other fields, effectively promoted the development of science and technology of China.