Luminous paint is made of luminous pigment, organic resin, organic solvent and auxiliary agent through a series of processes. Each component determines the performance of the luminous paint, and its selection criteria are important.
1. Selection of resins and varnishes: A) after the luminescent paint becomes a film, the luminescent absorption function is realized by the particles of luminescent pigments. As a result of the light through the requirements, will glow color material bonding resin should have better light transmittance, no hiding power. The luminescent paint is translucent and the color of the resin has an effect on its luminance. The principle that chooses resin, varnish so is colorless or light color diaphaneity is good. B) the luminescent pigment is weakly alkaline, and the selected resin is neutral or weakly acidic. C) choose resin or varnish varieties: epoxy resin (E440), polyurethane resin (or varnish), amino varnish, polyester resin (or varnish), acrylic resin (or varnish), hydroxyl acrylic resin, acrylic polyurethane varnish (two components), color money alkyd varnish, fluorine resin, etc.
2. Choice of luminescent pigments: the luminescent pigments produced by our company are graded as B, C, D, E and F according to particle size, which can be used for paint in a broad sense. However, due to the limitation of other characteristics of oil paint, the particle size applied to paint should be small.
3.The choice of auxiliaries used in luminous paint is mainly composed of dispersant and anti – settling agent. Dispersant: methyl silicone oil xylene solution, concentration of 1% anti-settling agent: gas phase silica if the site use of anti-settling agent can be different
4. Amount of luminescent pigment: the amount of luminescent pigment can be selected according to the required luminescent brightness and time. The recommended proportion is 15-50% (weight ratio) and 30% is an ideal proportion.
5. Preparation of luminous paint a) selection of containers: glass, ceramic, enamel lining and plastic containers are selected. B) production process: luminescent pigment shall not be ground, and luminescent paint shall not be prepared by three-roller grinder or grinder, and only by high-speed dispersing machine or mixer. The luminous pigment can also be dispersed in the paint by hand. The specific method will be resin or varnish into the container, add additives, start stirring, in the state of agitation, followed by the addition of anti – sinking agent, luminous pigment (note that the rotation speed is slow). After adding the luminescent pigment, increase the speed until the luminescent pigment is evenly distributed in the paint. Filtered luminous varnish.