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Waterborne polymer emulsion composition for preparation of projection screen and application of composition

A water-based polymer and emulsion composition technology, applied in polyurea/polyurethane coatings, projection devices, coatings, etc., can solve the problems of reduced screen contrast, rear projection screen size is not as good as front projection, etc., and achieves easy construction and environmental resistance The effect of strong optical power and cost reduction

Pending Publication Date: 2019-07-23
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The size of the front projection screen is not limited, but it needs to control the ambient light to get a good viewing effect. In an environment with good ambient light and lighting, the contrast of the screen will be seriously reduced.
The overall sense of the rear projection screen is strong, the picture is colorful, lifelike, and does not need to control the ambient light, it is suitable for the environment with good ambient light and lighting, but the rear projection screen is not as good as the front projection in size, and it needs enough Back space to ensure projection distance
Moreover, there is currently no screen that can be used for both front projection and rear projection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In 100 parts by mass of water-based polyurethane, 8 parts by mass of silica is added; 2 parts by mass of nano-tin dioxide and 2 parts by mass of water are mixed, and the solid content thereof is 45%. Then, the aqueous polymer composition 1 of Example 1 was obtained after 60 minutes using ultrasonic waves. The water-based polymer composition 1 is loaded into a spray gun, applied to the pretreated glass substrate in a direction perpendicular to the ground, and sprayed, and naturally dried to obtain a gray-white coating film with a surface dry time of 10-15. The glass coated with water-based polymer 1 can be used as a projection screen with a viewing angle of 170° and can be imaged on both sides of the coating. When the coating is used facing the projector, the rear projection effect is better.

Embodiment 2

[0033] In 100 parts by mass of water-based polyurethane, 14 parts by mass of silicon dioxide; 7 parts by mass of nanometer titanium dioxide; mixed with 2 parts by mass of water, the solid content of which is 63%. Then, the transmission paint composition 2 of Example 2 was obtained after 60 minutes using ultrasonic waves; The off-white coating film has a surface dry time of 10-15. The glass coated with water-based polymer 1 can be used as a projection screen with a viewing angle of 170° and can be imaged on both sides of the coating. When the coating is used facing the projector, the rear projection effect is better.

Embodiment 3

[0035] In 100 parts by mass of water-based polyurethane, add 8 parts by mass of silica; 2 parts by mass of nano-tin dioxide; 0.05 part of copper dioxide, mixed in 2 parts by mass of water, and the solid content is 47%. Then, the transmission paint composition 3 of Example 3 was obtained after 60 minutes using ultrasonic waves; The gray-black coating film has a surface dry time of 10-15. The glass coated with water-based polymer 1 can be used as a projection screen with a viewing angle of 170° and can be imaged on both sides of the coating. When the coating is used facing the projector, the rear projection effect is better.

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PUM

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Abstract

The invention provides waterborne polymer emulsion composition for preparation of a projection screen. The composition is characterized by comprising waterborne polymer emulsion, inorganic nanoparticles and an aid. The waterborne polymer emulsion composition can be applied to any proper substrate on site in any place to form a high-definition and environment-friendly projection film, additional screen cloth is not required, and projection is easy to realize. The waterborne polymer emulsion composition can form a projection film on a transparent substrate such as glass, is used for back projection imaging, has the viewing angle of 170 degrees and has high ambient light resistance capability. Compared with the prior art, the waterborne polymer emulsion composition is easy to construct, the size of a projection screen is not affected by other factors and is determined according to the size of the transparent substrate, the formed environment-friendly projection screen is less affected byambient light, bright color and vivid pictures can be formed even if under the bright light, and clear images can be watched on two sides of the screen. Due to back projection imaging, a projector canbe completely hidden, a demonstrator does not have a shadow, light of the projector cannot have a glare effect, the substrate still keeps an original state when not used, and original functions of the substrate are not affected.

Description

technical field [0001] The invention relates to a water-based polymer emulsion composition for preparing a projection screen and its application, in particular to a new material in the field of environmental protection. Background technique [0002] At present, projection systems are widely used in commercial presentations, multimedia conference rooms, classrooms, stadiums and other occasions. The main projection methods used are front projection and rear projection. Correspondingly, the projection screen can also be divided into a front projection screen (reflective type) and a rear projection screen (transmissive type) in terms of projection methods. The so-called front projection means that the installation position of the projector is on the same side of the projection screen as the audience, the light emitted by the projector is projected onto the projection screen, an image is formed on the projection screen, and then the light is reflected to the human eyes. Similarl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D133/04C09D123/08C09D7/61G03B21/60
CPCC08K2003/2231C08K2003/2241C08K2003/2248C08K2201/011C09D123/0853C09D175/04G03B21/60C08K3/36C08K3/22C08L33/04
Inventor 梁永日崔林杰郑京男
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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