CN112063248A - Coating for increasing light-emitting angle of PC lampshade and spraying method thereof - Google Patents

Abstract

The invention discloses a coating for increasing the luminous angle of a PC lamp shade, which comprises 2% of fluorescent powder, 70% of butyl acetate, 27.5% of acrylic resin and 0.5% of defoaming agent. The invention mixes fluorescent powder, butyl acetate, acrylic resin and defoaming agent, adopts ball milling to prepare the coating, and coats the coating on the surface of the PC lampshade by an airless spraying process to increase the light-emitting angle, so that the light distribution is more uniform and softer, and the trouble of low light-transmitting efficiency and insufficient light-scattering degree in the past is avoided.

Description

Coating for increasing light-emitting angle of PC lampshade and spraying method thereof

Technical Field

The invention belongs to the technical field of paint processing, and particularly relates to a coating for increasing the luminous angle of a PC lampshade and a spraying method thereof.

Background

The traditional energy-saving lamp realizes the effects of luminescence and white appearance by spraying fluorescent powder, and contains harmful substances such as mercury and the like in the process of packaging and powder spraying.

LED lighting bulb has certain heat release in the luminescent process, adopts the glass shell mostly, and light is bright dazzling. In order to make light soft, beautiful and maintain a certain transmittance, white paint is generally coated on the LED lamp cover to achieve the effects of light diffusion, light transmittance and beauty. The traditional internal white coating paint mainly uses titanium white, the main components are halogen powder and matte powder, the halogen powder enables the light transmittance of the LED lampshade to be poor, and the matte powder cannot achieve the light refraction effect, so that the light diffusion degree of the LED lampshade is poor. Therefore, the LED lamp in the prior art has insufficient light transmission efficiency and insufficient light diffusion.

The existing PC material also has no characteristics of high transmittance and high astigmatism.

Disclosure of Invention

In view of the above, the technical problem to be solved by the present invention is to provide a coating for increasing the light emitting angle of a PC lamp shade and a spraying method thereof, wherein a coating is prepared by mixing fluorescent powder, butyl acetate, acrylic resin and a defoaming agent and ball milling, and the coating is coated on the surface of the PC lamp shade by an airless spraying process to increase the light emitting angle, so that the light distribution is more uniform and soft, and the problems of low light transmission efficiency and insufficient light diffusion in the past are avoided.

In order to solve the technical problem, the invention discloses a coating for increasing the luminous angle of a PC lampshade, which comprises 2% of fluorescent powder, 70% of butyl acetate, 27.5% of acrylic resin and 0.5% of defoaming agent.

According to an embodiment of the present invention, the defoaming agent comprises 58% of polyoxypropylene polyoxyethylene glycerol ether, 12% of C10-18 fatty acid, 29% of polyvinyl ether and 1% of hydrophobic silica.

A spraying method of a coating for increasing the luminous angle of a PC lampshade comprises the following steps:

step a, providing 2% of fluorescent powder, 70% of butyl acetate, 27.5% of acrylic resin and 0.5% of defoaming agent, fully mixing, putting into a ball mill for ball milling for 48 hours to obtain a mixed coating, wherein the rotating speed of the ball mill is 80-120 r/min, and the ball-to-material ratio is 2: 1;

and b, filling the mixed coating into airless spraying equipment, and spraying the surface of the PC lampshade by a high-pressure airless spraying process, wherein the speed of a spray gun is 50-80 cm/s, and the indoor air speed is less than 0.4 m/s.

Compared with the prior art, the invention can obtain the following technical effects:

the coating is prepared by mixing fluorescent powder, butyl acetate, acrylic resin and a defoaming agent and ball milling, and is coated on the surface of a PC lampshade by an airless spraying process, so that the light-emitting angle is increased, the light distribution is more uniform and softer, and the trouble that the prior light-transmitting efficiency is low and the astigmatism is not enough is avoided.

Of course, it is not necessary for any one product in which the invention is practiced to achieve all of the above-described technical effects simultaneously.

Detailed Description

The following embodiments are described in detail with reference to the accompanying drawings, so that how to implement the technical features of the present invention to solve the technical problems and achieve the technical effects can be fully understood and implemented.

The invention discloses a coating for increasing the luminous angle of a PC lamp shade, which comprises 2% of fluorescent powder, 70% of butyl acetate, 27.5% of acrylic resin and 0.5% of defoaming agent. Wherein, the phosphor powder purchases the Merck group and has higher color development; butyl acetate is an excellent organic solvent, and the mixed coating is convenient; the acrylic resin has good gloss retention and color rendering properties, water resistance and chemical resistance, and is quick to dry, so that the curing and forming after coating can be accelerated, and the efficiency is improved. The defoaming agent can be selected from common types in the market, is used for eliminating foam and dispersing media, and improves the stability of the coating.

In one embodiment, the defoamer comprises 58% of polyoxypropylene polyoxyethylene glycerol ether, 12% of C10-18 fatty acid, 29% of polyvinyl ether and 1% of hydrophobic silica.

The invention provides a plurality of groups of test data relative to an energy-saving lamp with a 40w bulb matched with a spherical lampshade, which comprises the following example 1: no coating is sprayed; example 2: 5% of fluorescent powder is sprayed and mixed with 95% of butyl acetate; example 3: spraying a coating prepared by mixing 3% of fluorescent powder with 80% of butyl acetate and 18% of epoxy resin; example 4: spraying a coating prepared by mixing 3% of fluorescent powder with 70% of butyl acetate and 27% of acrylic resin; example 5: spraying 2% of fluorescent powder and mixing with 70% of butyl acetate and 28% of acrylic resin; example 6: spraying 2% of fluorescent powder mixed with 70% of butyl acetate, 27% of acrylic resin and 1% of defoaming agent; example 7: spraying 2% of fluorescent powder, and mixing with 70% of butyl acetate, 27.5% of acrylic resin and 0.5% of defoaming agent.

See table below:

therefore, the coating provided by the invention is coated on the PC lampshade, so that the light-emitting angle of the PC lampshade can be relatively improved, the illumination range is enhanced, the PC lampshade is sufficiently utilized, and the light effect is more uniform and soft.

The invention also provides a spraying method of the coating for increasing the luminous angle of the PC lampshade, which comprises the following steps:

step a, providing 2% of fluorescent powder, 70% of butyl acetate, 27.5% of acrylic resin and 0.5% of defoaming agent, fully mixing, putting into a ball mill for ball milling for 48 hours to obtain a mixed coating, wherein the rotating speed of the ball mill is 80-120 r/min, and the ball-to-material ratio is 2: 1; in the step, solid-liquid ball milling is adopted, solid materials are fully crushed, and the reaction is enhanced to prepare the coating.

And b, filling the mixed coating into airless spraying equipment, and spraying the surface of the PC lampshade by a high-pressure airless spraying process, wherein the speed of a spray gun is 50-80 cm/s, and the indoor air speed is less than 0.4 m/s. The lampshade can be hung in a closed room, liquid coating is pressurized, then the liquid coating is conveyed to the airless spray gun through the high-pressure hose, and finally the hydraulic pressure is released at the airless spray nozzle and sprayed to the surface of an object to be coated, so that the liquid coating uniformly flows to form a coating layer, the adhesive force is strong, the efficiency is more efficient and practical than that of common spraying.

The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (3)

1. A coating for increasing the luminous angle of a PC lampshade is characterized by comprising:

2% of fluorescent powder, 70% of butyl acetate, 27.5% of acrylic resin and 0.5% of defoaming agent.

2. The coating for increasing the luminous angle of a PC lampshade as claimed in claim 1, wherein the defoaming agent contains 58% of polyoxypropyl polyoxyethylene glycerol ether, 12% of C10-18 fatty acid, 29% of polyvinyl ether and 1% of hydrophobic silica.

3. A spray coating method for applying a coating for increasing the luminous angle of a PC lampshade as claimed in claim 1, which comprises the following steps:

step a, providing 2% of fluorescent powder, 70% of butyl acetate, 27.5% of acrylic resin and 0.5% of defoaming agent, fully mixing, putting into a ball mill for ball milling for 48 hours to obtain a mixed coating, wherein the rotating speed of the ball mill is 80-120 r/min, and the ball-to-material ratio is 2: 1;

and b, filling the mixed coating into airless spraying equipment, and spraying the surface of the PC lampshade by a high-pressure airless spraying process, wherein the speed of a spray gun is 50-80 cm/s, and the indoor air speed is less than 0.4 m/s.