Some characteristics of talcum powder must be clear to everyone - talc has lubricity, anti-adhesion, flow, fire resistance, acid resistance, insulation, high melting point, chemical inactivity, good hiding power, soft, good gloss, The excellent physical and chemical properties such as strong adsorption force are mainly reflected in the coating: in the coating, talcum powder acts as a filler, which can play a skeleton role, reduce the manufacturing cost and improve the hardness of the paint film. Mainly can increase the stability of product shape, increase tensile strength, shear strength, bending strength, pressure strength, reduce deformation, elongation, thermal expansion coefficient, high whiteness, uniform particle size and uniform dispersion. But the most important feature is that talc has fire resistance, acid resistance, insulation, and high melting point. These physical or chemical properties determine that talc can be used in the production of fire retardant coatings. For example, an adhesive is a substance that binds together similar or different materials. With the development of science and technology and the national economy, adhesives have been widely used in wood processing, construction engineering, textile printing and dyeing, footwear, leather, electronics, automotive, machinery, aerospace, biomedical and other industries and high-tech fields. However, at present, adhesives generally have disadvantages such as poor acid and alkali resistance, poor heat resistance, and poor storage stability. After modification with talc, the ignition point of the adhesive can be significantly increased, and the ignition point can be raised to about 300 degrees Celsius. In addition, the fire protection properties of talc coatings are also related to their particle size. Studies have shown that the larger the particle size, the better the fluidity of the talc coating and the better the fire protection properties. The number of talc powder used in water-based fireproof coatings does not need to be too high, and generally 800 mesh is sufficient. The finer the particle size, the lower the fire protection effect, which has an important cost-reducing significance for deep processing of talc resources. The high price of talc used in fire retardant coatings is a very important profit point for companies seeking added value. In order to optimize the application of talcum powder in fireproof products, talc enterprises should increase investment in scientific research, vigorously develop new products, and increase the economic added value of talc. Mini Ball Lens
Spherical ball lenses are commonly used for laser collimating and focusing, laser-to-fiber coupling, fiber-to-fiber coupling, and fiber-to-detector coupling. Larger spheres are easier to handle and ease the sensitivity of translational alignment. However, smaller spheres fit into smaller packages. The addition of a broadband MgF2 antireflection coating results in a highly efficient lens due to the high refractive index of the glass. Coupling efficiency is generally >90% due to the simplicity of these lenses.
We consistently offer various high quality optical components according to the customer's requirements. Such as prisms,Spherical Lens, aspherial lens,Ball lens,Optical Windows,Achromatic Lens,Cylindrical Lens,beamsplitters,mirrors,color filters,diffraction grating,reflectors,waveplates etc.
Specification of our ball lens: Fused Silica Ball Lens,Optical Glass Spheres,Mini Ball Lens,Half Ball Lens,Bk7 Balls,Optical Glass Balls China Star Optics Technology Co.,Ltd. , https://www.csoptlens.com
*Material:BK7 or other optical glasses
*Diameter:1mm - 40mm
*Dimension Tolerance:+/-0.005mm
*Surface Quality:40-20
*Sphericity:0.005mm
*Coating:optional
Talc powder is added as an additive to the paint. Everyone knows it, but never expected that the paint or adhesive modified by talcum powder can be fireproof. In order to study the fire prevention of talc modified adhesive, Xiao Bian specially made up for an afternoon of knowledge, and talked with everyone about how talcum powder is used for coating fire prevention.