Paint classification: Luminous paint

Core tip: Introduction: Luminous paint, also known as luminous paint, is a kind of light storage material, that is, the film can be excited when it receives the sunlight and light, absorb and store the ultraviolet energy contained in the light source, and release the absorbed light source in the form of visible light after the light source disappears, that is, it can re light after the light source disappears (this kind of light refers to the afterglow and Fluorescence) The main characteristic of luminous coating is that it has numerous repetitions of absorption, luminescence, absorption and luminescence Its luminous color and time vary with the types of fluorescent materials (pigments) used Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Introduction: luminous coating, also known as luminous coating, is a kind of light storage material, namely coating It can be excited when receiving the sunlight and light It absorbs and stores the ultraviolet energy contained in the light source After the light source disappears, it can release the absorbed light source in the form of visible light, that is, it can emit again after the light source disappears (this kind of light refers to afterglow and fluorescence) The main characteristic of luminous coating is that it has numerous repetitions of absorption, luminescence, absorption and luminescence Its luminous color and time vary with the types of fluorescent materials (pigments) used At present, there are two kinds of luminous coatings, one is light storage coating, which needs external light source to absorb energy, so it is also called photoluminescent coating, the other is self luminous coating Category: luminous paint is a kind of paint which is composed of fluorescent pigment, organic resin, solvent and auxiliaries Fluorescent pigment plays an important role The emission and absorption of light include stimulated absorption, stimulated emission and spontaneous emission Fluorescent pigments belong to solid luminescent materials Solid luminescent material is a kind of solid material that can transform the excited energy into visible light, and the luminescent energy can be sunlight, X-ray, gamma ray or other factors When a light beam is incident into a solid-state luminescent material, absorption transition (absorption spectrum and color), spontaneous emission (fluorescence) and stimulated emission (laser) exist at the same time, but the properties of various materials are different Luminescent material is also called fluorescent material, because it emits light at room temperature, it is also called cold light Any solid material will glow when it is heated above 700 ℃, which is the light of thermal radiation, not fluorescence The luminous paint is classified according to the types of long afterglow fluorescent pigments used for private use in the paint, which can be divided into: ① luminous paint prepared with sulfide fluorescent pigment; ② luminous paint prepared with aluminate fluorescent pigment Characteristics: ① fluorescence characteristics; ② afterglow characteristics; ③ light resistance characteristics Preparation: formulation preparation In the case of heating and stirring, polyvinyl alcohol is added, and after polyvinyl alcohol is completely dissolved, the transparent polyvinyl alcohol aqueous solution is obtained by filtration; in the polyvinyl alcohol solution, luminescent powder is added and stirred evenly; in the deionized water, dispersant, defoamer and glycerin are added to the luminescent powder slurry after stirring evenly, and then the luminescent coating is obtained after fully stirring evenly Construction: construction method ① spraying A clean the surface of the coating before spraying If it is not smooth, please repair the surface of the coating; and after it is completely dry, spray the flat primer in advance b In order to achieve better light storage effect, it is recommended to spray flat primer as the bottom layer before spraying C after spraying the primer completely dry, then spray the noctilucent paint When spraying, please leave 15-25 cm from the surface of the wrapped object Spray the thin layer for about 5-10 min, and then spray second d The time between each spraying shall be 5-10min, and at least three spraying shall be the minimum standard, depending on the uniformity after spraying; the fourth spraying or more spraying can be added, and the light storage capacity will be stronger (i.e the brightness at night will be better) with the thickness of the spraying film increasing e The luminous paint (refers to the drying time of about 15-20 min), after spraying, the transparent paint can be sprayed again according to the needs, so as to make the luminous paint surface more bright and lasting ② A the surface of the coating shall be cleaned before painting If it is not smooth, please repair the surface of the coating and spray the flat primer in advance after it is completely dry b In order to achieve better light storage effect, it is recommended to spray flat primer as the bottom layer before painting c After the primer sprayed or applied is completely dry, the luminous paint shall be applied The coating shall be applied in the same direction For one thick coating operation, wait for 15-20 min until the surface is slightly dry, and then carry out the second operation in the same way as above d During the brushing construction, the brush shall not be brushed back and forth in the way of moving down or left and right, so as to avoid uneven distribution of the luminous powder, which will seriously affect its light storage capacity e The interval of each coating is 15-20 min it is suggested that at least four coatings should be applied as the minimum standard Depending on the uniformity of the coating, a fifth or more coatings can be added With the thickness of the paint film increasing, the light storage capacity is stronger (i.e the brightness at night is better) f The luminous paint (refers to the drying time of about 20-30 minutes) can be reapplied or painted with transparent paint according to the needs after painting, so as to make the luminous paint surface more bright and lasting The luminous paint can only function after being brushed to form a paint film, so it should be fully dry Note: to give full play to the performance of luminous paint, it is necessary to complete and correct construction The following are the precautions during construction: ① understand the performance of luminous paint and construct according to the specified method During construction, it is recommended to spray one or two layers of polymer coating agent on the bottom layer and finished paint film, so as to enhance adhesion, weather resistance and paint life ② Complete surface treatment: whether the surface treatment is appropriate or not has a great impact on the performance and service life of the paint film, so it is necessary to completely remove rust, grease and other foreign matters and fully dry before construction brush coating ③ The luminous paint shall be fully stirred evenly: the luminous paint is a mixture of pigment, resin liquid and luminous powder, which may be separated or precipitated for a period of time from manufacture to use, so it shall be fully stirred evenly before use ④ The thickness of the first brush should not be too thick: if the thickness of the first brush is too thick, it is easy to produce the phenomenon of bleeding, wrinkling, etc Therefore, it is necessary to make appropriate control and coating construction During the lamination coating, the construction shall be carried out after the lower layer of paint is completely dry When the paint film of the following layers is not completely dry, it is easy to wrinkle or even infiltrate the peeling phenomenon of the lower layer of paint Therefore, the upper layer of paint can only be applied after the lower layer of paint is completely dry ⑤ Avoid construction in low temperature or humid climate: when the temperature drops below 5 ℃, the dryness of the paint will be extremely reduced At the same time, when the humidity is more than 85%, it will produce light reduction and even affect the adhesion Therefore, construction in this situation should be avoided ⑥ Remove dust as much as possible: dust will not only affect the performance of the paint film, but also damage the appearance, so clean it as much as possible ⑦ Fast drying: it can be heated and dried at 65 ℃± 5 ℃, and the drying time is about 6-10 min Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,