JPH04134330U - Interior wall materials and partitions with excellent stain resistance and projection properties - Google Patents

Abstract

(57) [Summary] [Purpose] Schools, offices, conference rooms, etc. used to have screens for projection and white boards for writing. Obtain interior wall materials and partitions that have both functions. [Structure] A paint consisting of limited oligo(meth)acrylate, polyhydric alcohol (meth)acrylate, or a system in which a polymer or silica-based extender pigment is added to a metal powder is applied to a metal plate. Applies to inorganic boards, wood boards, and plastic boards. Interior wall materials and partitions with a projection screen and lighting function obtained by a manufacturing method that hardens using electron beam irradiation.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to interior wall materials or partitions suitable for classrooms, conference rooms, and offices. It is.

0002

[Conventional technology]

Traditional classrooms, conference rooms, and offices are based on the balance of the interior of the rooms throughout the building. Fixed blackboards, whiteboards, etc. are installed in classrooms, and fixed blackboards and whiteboards are installed in conference rooms and offices. Generally, a blackboard, whiteboard, or mobile one is used. Also, in the case of projection, it is best to bring a projection screen to a room other than the one designated for it. Common.

0003

[Problem that the idea aims to solve]

This means installing blackboards, whiteboards, projection screens, etc. in classrooms, conference rooms, and offices. classrooms, conference rooms, etc. without using mobile blackboards, whiteboards, projection screens, etc. Using the office wall as it is as a white board and projection screen With the goal.

0004

[Means to solve the problem]

That is, the present invention contains two or more (meth)acryloyl groups in one molecule, and (meth)acryloyl group equivalent of 500 or less tetrahydrophthalic acid, trimethyl The three components of alcohol propane or pentaerythritol and (meth)acrylic acid are The first component is oligo(meth)acrylate obtained by telification, Contains two or more methacryloyl groups in one molecule, and has a methacryloyl group equivalent of 1 21 or less ethylene glycol dimethacrylate, diethylene glycol dimethacrylate 1 selected from acrylate, trimethylolpropane trimethacrylate The second component is polyhydric alcohol methacrylate, and the first and second components are blended. The ratio is 1st component/2nd component = 1/0.5 to 1/2 (weight ratio) and their total weight 100 parts by weight, aluminum powder with a radius of 1 to 50 μ as a third component, and/or A paint containing 1 to 20 parts by weight of stainless steel powder is applied to the object to be coated, and this is heated to an oxygen concentration. A method for producing a coating material that is cured by electron beams in an atmosphere with a concentration of 1% or less law, or contains two or more (meth)acryloyl groups in the molecule, and (meth)acryloyl Polyester (meth)acrylate with an yl group equivalent of 500 or less, t) Contains two or more acryloyl groups and has a methacryloyl group equivalent of 150 or less Polyhydric alcohol (meth)acrylate, silicone with oil absorption of 150g/100g or more Lika-based extender pigment, polymer with a molecular weight of 500 or less, aluminum with a radius of 1 to 50μ A paint containing powdered powder and/or stainless steel powder as an essential component is applied to the object to be coated. A coating material that is cured by electron beams in an inert gas with an oxygen concentration of 1% or less. Production method, Depending on metal plate, hard board, particle board, wood board such as wood, Do not paint inorganic boards such as vest boards, rock wool boards, gypsum boards, or plastic boards. Interior wall materials and room partitions with projection properties and writing board functions. Ru.

[0005]

[Effect]

The paint film used in this invention has excellent projection performance and is suitable for whiteboards. Text and figures written with a card marker can be easily erased with an eraser.

[0006] Other types of stain resistance were also tested using regular test methods such as magic ink, curry, and color. lipstick, crayons, colored pencils, ink, whiskey, and other daily necessities or Substances commonly used in contamination tests are left to stand for 24 hours after application, and benzene, alcohol, etc. Traces can be removed using detergent, water, other chemicals that dissolve contaminants, cloth, gauze, etc. What can be erased.

[0007] In addition, the surface hardness of the paint film, which is a measure of scratch resistance, must be 9H or higher on a pencil hardness scale. and.

[0008] As explained above, the interior material has excellent projection properties, stain resistance, and high hardness. This interior material can be stretched over the entire wall or used as a screen during projection. It may be applied only to appropriate positions, and other interior panels may be applied to other parts.

[0009] When using such interior materials, walls can be used as is, as a screen or white board, or as a meeting place. It can be used as it is in conference rooms, classrooms, offices, etc., and allows you to conduct education and meetings in a free style. Be efficient. It also has excellent stain resistance and hardness, making it suitable for kitchens, bathrooms, and restrooms. .

0010

【Example】

Example 1 A. Condensation model of tetrahydrophthalic acid, trimethylolpropane, and acrylic acid Oligomer with a ratio of approximately 1:2:4 (acryloyl group equivalent weight approximately 155) B. Trimethylolpropane trimethacrylate (acryloyl group equivalent: approx. 11 0) C. Ethyl acrylate, methyl methacrylate, hydroxyethyl methacrylate , Acrylic acid whose copolymerization molar ratio of acrylic acid is 70:24:3:3 Polymer based copolymer (number average molecular weight approximately 20,000) D. Silica-based extender pigment (Fuji Davison Chemical “Syroid 308” oil absorption 1 70/100g) E. titanium white

[0011] The weight ratio of A, B, C, D, E, and iron yellow is 17:17:4.0:4.0: 40.2:2.7, anone/butyl acetate/xylene = 2/2/1 A paint was prepared by adding 10% (compared to the former) of a mixed solvent. Curtain flow this paint system. Electrogalvanized steel sheets ( Dry coating thickness 30μ on stainless steel plate (plate thickness 0.5mm) and stainless steel plate (plate thickness 0.8mm) It was painted to look like this.

0012 This coated board was heated to a board temperature of 72°C (about 50 seconds in the oven) using hot air at 100°C. The solvent was splashed under the following conditions, and then cured with an electron beam to obtain interior wall member 1. . Curing conditions are voltage 300 kV, current 160 mA/cm, dose 3 Mrad, during irradiation. The oxygen concentration was 150 ppm.

[0013] (1) Projectability When exposed to color projection light, the colors were vividly reproduced and the projection performance was excellent. (2) Stain resistance Write letters and diagrams on this painted board using a whiteboard marker made by Pilot Co., Ltd. could also be easily erased. Furthermore, as another stain resistance test, magic ink (red, black) If you apply lipstick, nail polish, etc. and leave it for a day, then wipe it off with ethanol, it will completely disappear. left no trace. (3) Others Hardness 9H, gloss 65, sharpness PGD meter 0.1, luminous reflectance 80 or more

[0014] Example 2 Excluding iron yellow from Example 1, metal powder (Toyo Aluminum Co., Ltd., MG1000, medium Using a paint system with 3% (vs. Partition member 2 was created. The performance after curing was almost the same as in Example 1. .

[0015] Example 3 Using a paint system from Example 2 with the C and D components removed, it was used for partitioning under the same conditions as before. Member 2 was created. (The coating method is a roll coater.) The performance after curing is similar to Example 2. The performance was almost the same.

[0016]

[Effect of the idea]

If you use the interior wall material of this invention, it can be used as a projection screen or white board. It can be used as a classroom or conference room. Also, divide a large room with this If so, it can be used immediately and efficiently in conference rooms, etc. without a projection screen or white board. It is. Also, dirt can be easily removed, so it can be used as interior wall material in kitchens and bathrooms.

[Brief explanation of drawings]

[Figure 1] Wall member according to the present invention

[Figure 2] Partition member according to the present invention

[Explanation of symbols]

1 Wall components 2 Partition members

Claims (2)

[Scope of utility model registration request] Claim 1: Two (meth)acryloyl groups in one molecule.
or more, and the (meth)acryloyl group equivalent is 500
The first component is an oligo(meth)acrylate obtained by esterifying the following three components: tetrahydrophthalic acid, trimethylolpropane or pentaerythritol, and (meth)acrylic acid, and has two or more methacryloyl groups in one molecule. ethylene glycol dimethacrylate containing and having a methacryloyl group equivalent of 121 or less,
The second component is one type of polyhydric alcohol methacrylate selected from diethylene glycol dimethacrylate and trimethylolpropane trimethacrylate, and the first component is
The mixing ratio of the component and the second component is 1st component/2nd component = 1/
0.5 to 1/2 (weight ratio) and their total weight 100
A paint containing 1 to 20 parts by weight of aluminum powder with a radius of 1 to 50μ and/or stainless steel powder as a third component is applied to the object to be coated, and this is applied in an atmosphere with an oxygen concentration of 1% or less. , a method for producing a coating material which is cured by electron beam, or which contains two or more (meth)acryloyl groups in the molecule and has a (meth)acryloyl group equivalent of 50
0 or less polyester (meth)acrylate, polyhydric alcohol (meth)acrylate containing two or more (meth)acryloyl groups in one molecule and having a methacryloyl group equivalent of 150 or less, silica with an oil absorption of 150g/100g or more A paint containing as essential components a structural pigment, a polymer with a molecular weight of 500 or more, aluminum powder with a radius of 1 to 50μ, and/or stainless steel powder is applied to the object to be coated, and this is heated in an inert gas with an oxygen concentration of 1% or less. Coating metal plates, hard boards, particle boards, wooden boards such as wood, inorganic boards such as asbestos boards, rock wool boards, gypsum boards, and plastic boards using a manufacturing method for coating materials that are cured with electron beams. An interior wall material with projection properties and the function of a writing board. 2. A partition having projection properties and a function of a writing board, which is formed of a member coated by the coating method according to claim 1.