JPH03217552A - High-weather-proof metallic lysine plate - Google Patents

Abstract

PURPOSE:To reduce a cost and improve weather resistance by setting base coat as the bonding agent of the coating film of acrylic resin, on the facing surface of a metallic plate, to form a rugged section with aggregates fitted firmly on, on the base coat, and by forming the whole facing surface to be integrated with the overcoat of the fluorine coating of coating film component. CONSTITUTION:On the surface of the base member 2 of the metallic plate of a stainless steel plate or the like, base coat 3 using resin or the like including acrylic resin or the like or to be easily ionically-bonded to is firmly fitted. Besides, on the base coat, the aggregates 4 of silica sand, mineral flour, and the like are dispersed and are arbitrarily fixed in the state of high density or the like, Then, a facing surface 5 including the aggregates 4 is coated with be overcoat 6 of the fluorine coating of main component, and the lysine plate 1 of the whole high-weather-proof layer for covering the whole facing surface 5 is formed. As a result, a fluorine coating film is formed and at the same time, the aggregates 4 can be firmly fitted on.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a highly weather-resistant metallic lysine material useful for building materials such as roofing materials and exterior wall materials in which a lysine coating film is formed on at least the decorative surface of a thin metal sheet. be.

(Prior art) A method of temporarily forming metal lysine on 1C or its plate material is disclosed in JP-A-50-17488 and JP-A-52-
Publication No. 141846, and JP-A-54-127934
No. 2, etc. are known.

[Problems to be solved by the invention] However, in this type of ricin steel sheet, ■ polyester resin, acrylic resin, alkyd resin, etc. are used as adhesive and coating film on the thin metal sheet, so the weather resistance is about
~5 years is not that long.

■Vehicles such as polyurethane resin and polyester resin deteriorate quickly in color. ■The base coat and overcoat are compatible, making it easy to select the resin, but it lacks weather resistance. ■In ricin painting, the aggregate contributes to pinholes, so it is necessary to lower the viscosity of the coating film and improve wettability. The color of changes. There were disadvantages such as

[Means to solve the problem]

In order to eliminate these drawbacks, the present invention forms a fluorine coating film on the overcoat to cover the aggregate, uses a coating film that is compatible with the above-mentioned overcoat and easily adheres to the base coat, and further , the above-mentioned fusoso coating film has a composition that allows moderate viscosity control and cost reduction, and proposes a highly weather resistant metal lysine plate with a weather resistance life of 10 years or more.

[Example] An example of the highly weather-resistant metal ricin plate (hereinafter simply referred to as ricin plate) according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is an explanatory diagram showing a part of the cross section of the above-mentioned lysine plate, in which a base coat 3 is fixed to the surface of the base material 2 with the lysine plate 1, and aggregate 4 is scattered on it, and any desired material such as high density etc. At the same time, overcoat 1 to 6 is applied to the decorative surface 5 including the aggregate 4 to cover the entire decorative surface 5 or on the thin board. To explain further, the base material 2 is made of one type such as a stainless steel plate, an aluminum plate, a galvanized iron plate, a colored steel plate, a flat plate such as a titanium plate, an embossed plate, etc. Preferably, a colored button plate is used because of its cost and weather resistance. It is desirable to combine gender. For example, a cross-sectional view of the structure is shown in FIG. 2. That is, the base material 2 has iron (i) as a core material, a galvanized opening, a chemical conversion coating (c), an undercoat layer (ii), and a topcoat layer (e).

At this time, the top coat layer E is a coating film having good compatibility and adhesion with the base coat 3. Of course, at this time, if the baking is incomplete (baking remains), the base coat 3 and overcoat 6 are integrated at the same time as baking to further improve the degree of adhesion. HESCO 13 contains a resin that is a component of overcoat 6, or uses a resin that easily bonds ionically, such as acrylic resin, acrylic lanocar acrylic urethane, or ethylene oxide addition of polyester resin and bisphenol A. products, direct-setting polymeric polyester resins, polyolefins, epoxy resins,
It consists of one or more types of coating film, etc., containing 20 to 60 parts by weight of a fluoroolefin-vinyl monomer copolymer and an acrylic resin containing 85% or more of acrylic (meth)acrylate, a pigment, and a curing agent. , about 10-10
The thickness is about 0 microns (Uesoto). The aggregate 4 is made of one or more of silica sand, rock, mineral powder, zeolite, hermiculite, mica, alumina, shirasuharun, pearlite grains, glass grains, and metal powder, and its size is about 1 to 25.
It consists of one kind or a mixture of one kind at the 0-mesosus position. Of course, the aggregate 4 is composed of one or more types of granular, scaly, etc., and its distribution may be sparse, dense, striped, linear, etc.
It is distributed according to its purpose, such as a pattern. Furthermore, the overcoat 6 contributes to covering the exposed surface of the aggregate 4 and improving weather resistance, and uses fluorine paint as its main component.

Of course, the Fuso paint corresponds to the base coat 3, and both have Fuso resin as a main component, to which an acrylic resin and a pigment are added.

Examples of resins (abbreviations) are PTFE, FEP,
PFA, EPE, PCTFE, PVDF, ET
The vehicle contains about 10 to 50% of FE, PVF, etc. To give a specific example, (1) 80 to 40 parts by weight of a fluoroolefin-vinyl monomer copolymer with 2 to 5 carbon atoms and a molecular weight of 15,000 to 40,000;
A paint composition containing 20 to 60 parts by weight of an acrylic resin containing 85% or more of alkyl (meth)acrylate, a pigment, and a curing agent, the main component of which is an acrylic-modified vinylidene fluoride resin, and an ultraviolet absorber added to it. The added pigment etc. has a viscosity of about 30 to 500 CPS when applied.

Here, a base coat 3 made of polyester resin as a main component is formed on a colored steel plate, aggregate 4 (28 to 32 menoshes) is evenly spread on this base coat 3, and the above-mentioned paint (2) is applied on top of the base coat 3. Apply as overcoat 6 and apply about 2
A test piece (example) baked at 00 to 250°C and a test piece (comparative example) in which base coat 3 and overcoat 6 were formed with the same paint as the color mackerel board were tested in i1! A comparison of performance is shown in the table below.

However, ■ is 60° specular reflectance, ■ Maginoque ink removability, ■ pencil hardness after baking, ■ Gono Lambda's cellophane tape peeling test, however, aggregate 4 is sold separately, ■ 1000 hours, ■
Sunshine weather meter irradiation 3000 or more The explanation above is only one embodiment of the present invention, for example, Fig. 3(a) to
It can also be used for surface materials of building materials shown in (u) and FIGS. 4(a) to (e). Of course, the embossed base material 2
Filling the aggregate 4 only on the top or in the recesses,
) and (b).

[Effects of the Invention] As described above, according to the ricin board according to the present invention, aggregate can be fixed while forming a fluorine coating film. ■Merisoto, a fluorocarbon paint, can be used. ■A ricin-like appearance can be created while forming a funoso coating. ■Excellent weather resistance, corrosion resistance, and stain resistance. ■Even the ricin board has excellent stain resistance, so the appearance is less likely to be soiled by dust, etc. ■Since the gloss does not deteriorate, the outer surface of the aggregate can be emphasized over a long period of time to make it appear more prominent, and the three-dimensional effect can be enhanced. It has the following characteristics and effects.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing an enlarged part of the highly weather-resistant metal ricin plate according to the present invention, FIG. 2 is an explanatory diagram showing a further enlarged extraction of the plate, and FIGS. U) and FIGS. 4(a) to (e) are explanatory diagrams showing examples of building materials using the above-mentioned ricin board, and FIGS. 5(a) and (b) are embossing boards filled with aggregate 4. FIG. 2 is an explanatory diagram showing a part of the decorative surface 5 in an enlarged manner. Soil... Highly weather resistant metal ricin plate, 2... Base material, 3...
・Base coat, 4... aggregate, 6... overcoat. Figure I Figure 2 Highly weather resistant metal ricin plate/base material゜Base coat/aggregate/overcoat Figure 3 (α) Figure 3 (V) Figure 3 (ol I Figure 10 (Q)》 ( 1)》 Row 111110 (Cノ51C5ノ≦1(}I} Gu------Mo No. Cow Diagram (Me)

Claims (1)

[Claims] (1) A base coat is provided on the decorative surface of a metal plate using a paint film made of acrylic resin as an adhesive, and irregularities with aggregate fixed thereon are formed on the base coat, and the entire decorative surface including the irregular surface is covered with the above coating film. A highly weather-resistant metal lysine plate, characterized in that it is integrally formed with an overcoat made of a fluorine paint containing as one of the ingredients.