Several methods for making encapsulated type glow powder

Stearic acid coated luminous powder: stearic acid is often used as a lubricant in polymer processing to reduce the friction and adhesion between melt and processing machinery and between molecules in melt, improve fluidity, improve processing formability, improve production capacity and product appearance quality and finish.
Coupling agent treatment of rare earth luminous powder: from the perspective of chemical structure and molecular aggregation state, inorganic materials are very different from organic polymers, and it is difficult to form the required interface combination. It is necessary to modify the inorganic surface to improve its affinity to the substrate. The substances that are surface treated for inorganic substances are called surface treating agents. The main surface treatment agent is coupling agent. Coupling agents are a kind of substances with amphoteric structure. Some of their molecular groups can react with the chemical groups on the inorganic surface to form strong chemical bonds.
Another part of the group has the property of organophile, can react with organic polymer or form physical tangle, so as to firmly combine the two materials with different properties, and improve the dispersion of luminous powder in plastic. At present, industrial production and application of coupling agents include silanes, phthalates, aluminate esters, etc.
Dimethyl silicone oil coated luminous powder: dimethyl silicone oil is tasteless and non-toxic, with physiological inertia, good chemical stability and high shear resistance. According to its high temperature resistance and barrier property, it can be used to coat luminous powder, which can improve the processing fluidity of materials, reduce the shear friction between materials and metal equipment, and maintain the luminescence performance of rare earth long-acting luminous powder.
PMMA coated luminous powder was synthesized by suspension polymerization with methacrylate and ethyl acrylate vinegar as monomers and a small amount of luminous powder as key components. The generated organic membrane is a dense mesh membrane with a thickness of 20-30nm. This kind of organic coating can effectively improve the water resistance of luminous powder, reduce oil absorption, and do not change the long afterglow characteristics of the powder.
Inorganic SiO2 nanometer film for noctilucent powder: using tetraoxyethyl silicon as silicon coating agent, a layer of 14nm dense and uniform SiO2 nanometer film was coated on the surface of noctilucent powder. The water resistance of noctilucent powder is improved obviously, and the luminescence property changes little. All the above five methods can be used to coat noctilucent powder. In the coating material, noctilucent powder improves the luminous efficiency due to the refraction of the coating material. After coating, the surface flexibility of noctilucent powder can be improved to cover some sharp corners of noctilucent powder, so as to improve the application effect of noctilucent powder