JPS6031958A - Acrylic film laminated metallic plate - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Separation] The present invention relates to an acrylic film laminated metal plate used for roofing materials and the like.

[Background technology]

Acrylic film laminated metal plates have been conventionally provided as exterior metal plates used for roofing materials and the like. This acrylic film laminated metal plate is formed by using a metal plate as a substrate and coating the surface with an acrylic film adhesive.The acrylic film coating provides excellent durability and weather resistance. . However, although the acrylic film laminated metal sheet formed in this way has excellent durability, the coating on the surface is soft and is prone to scratches and cracks. During molding or construction, scratches and electrical equipment may occur, and water from these scratches and cracks may seep into the interior.
The drawback was that the metal plates inside would corrode.

[Purpose of the invention]

The present invention has been made in consideration of the above points, and provides an acrylic film laminated metal plate that can prevent scratches and cracks and improve corrosion resistance without compromising durability and weather resistance. The purpose is to provide

[Disclosure of the invention]

In other words, ``Zero Genu'' is a polymethyl methacrylate thread resin containing inorganic fibers in an amount of O85 to 30% of the total amount of the acrylic film, and the acrylic film is wrapped in a shape and coated on a metal plate through a adhesive. thing? The above purpose is achieved by the characteristic acrylic film laminated metal plate? It was howling.

The present invention will be explained in detail below. First, we will explain the manufacturing method of acrylic film.We will explain the manufacturing method of acrylic film by copolymerizing 0acrylic branched alkyl ester and methacrylic acid alkyl ester with ethylene thread*flexible body that can be copolymerized with the above-mentioned single elbow body. A dispersion of Lun copolymer elastomer is produced. Next, in the presence of this crosslinked composite elastomer dispersion, methyl methacrylate and acrylic acid alkyl ester are easily prepared, and these single wires are combined with a functional ethylene-based single body and r Kraft copolymerization is carried out to produce a kraft subbody resin.

Next, I looked at the polymethyl methacrylate thread resin that Sugiga made using this method. At the same time, inorganic fibers are mixed with 0.3 to 50% by weight based on the total weight of the film, mixed uniformly, and processed into granular pellets using a printing press. Here, as the inorganic fibers used, glass fibers, carbon fibers, silicon carbide fibers, etc. can be used, and in particular, these inorganic fibers include titanate-based or silane-based fibers that are familiar to polymethyl methacrylate fibers. Is it treated with a tin link agent? It is preferable to use Furthermore, the shape of the inorganic fiber is 1 to 50μ in diameter and 1 to 200μ in length.
Of? It is preferable to use Next, the above-mentioned Peshi-soto is heated and melted, and processed by melt extrusion method, inflation method, calender roll method, etc. to a thickness of 50 ~
The acrylic film produced in this way is processed into a 150μ film or sheet to form an acrylic film with excellent corrosion resistance, such as an aluminum alloy or lead alloy plated steel plate. Right side tension 2 on metal plate
Laminated metal plate with acrylic film via @ layer? It's something you get.

However, by blending O0 convex to 30% by weight of an inorganic fiber T acrylic film with a small methyl methacrylate based resin to form an acrylic film 'ffU shape, it is possible to create an acrylic film with no indentation. By uniformly dispersing it in a film, it is possible to increase the tensile strength t, and at the same time, it is possible to reduce the thermal expansion and contraction value. If the blending ratio of inorganic fibers is less than 0.3 times the total line of the acrylic film, the effect of adding the inorganic fibers will be small, and the surface hardness will not be low, making it easy to stick. If the weight exceeds 30, the workability will be poor and the taste quality of the metal plate will deteriorate.

Hereinafter, the present invention will be described in detail based on Example 1> Acrylic film harvested Aluminum acrylic acid ester and Al methacrylic acid ester, if necessary, can be copolymerized with the vehicle track body. In the presence of a cross-linked copolymerized elastic rug obtained by copolymerizing with ethylene spinning wheel, an ethylene-based monomer that can be copolymerized with methyl methacrylic acid alkyl ester and the monomer as necessary. A kraft car made by copolymerizing and t-kraft 8 - Resin pigment tb Add and knead so that
It is then processed into granular pellets by extrusion. after that,
One piece of heshi was heated and melted in acid using the T-shiba model chair method, and extruded through a narrow slit to obtain an acrylic film with a dust size of 100 μm.

Manufacture of acrylic film laminated metal plate Galvanized iron plate with a thickness of 0.35y [plating weight 250t/door (both sides, plating thickness 20μ on one side]) with a coating thickness of 0.84
Phosphate blood lead treatment is applied so that / nt K, and acrylic copolymerization is applied to the surface of the treated layer.
, resin 9.5 tunmin part, amine thread hardener 0.5 car beast city,
An acrylic resin containing 70% of methyl isobutyl ketone + a sealant was applied at a temperature of 6 to 8 r/m' (dry condition), and then baked at 220°C for 60 seconds.
Immediately after that, apply the above 100μ thick acrylic film t.
Immediately coated with an O-ru holder to obtain an acrylic film laminated metal plate (Example 2) A755 weight 1d%, Zn43°11%, plate thickness 0.4U,
Si1.6 heavy duty aluminum, zinc alloy plated steel sheet [plating weight 150t/7F+' (both sides), plating thickness 20μ on one side] was treated with 0-mium acid conversion treatment liquid Bonderite 1415A (Japan) ＼ - Karaizinc The seeds were dried at 40 to 50° C. using a 150 to 200 mt 7' door (manufactured by Phytochemistry Co., Ltd.). Next, on the surface of the formed chemical treatment layer, 20 tons of acrylic copolymer, 9.5 tons of Eho + Shi resin, and 0.5 tons of amine thread hardening agent were added.
Adhesive material t9~ll containing 30% methyl isobutyl ketone and 1,000 rontium chloride based on the non-volatile content of acrylic efoxy + chlorine sorbent.
f/nf (in dry form), and then baked at 220°C for 60 seconds (immediately thereafter, a 100μ thick glass fiber T film mixed with 20% wrinkles as in Example 1) was applied. The acrylic film was immediately soaked under a D-ru pressure to obtain an acrylic film laminated metal plate.

<Conventional amount 1> An acrylic film@layer metal plate was obtained in the same manner as in 01 using an acrylic film without any color.

<Conventional amount 2> Noun V using acrylic film that does not contain any fermentation fibers
Acrylic film laminated metal plate in the same way as Example 2?
Obtained.

Next, the acrylic film laminated metal plates obtained in Example 1.2 and Conventional Amount 1.2 were evaluated for scratchability, hardness, processability, corrosion resistance, and weather resistance fc.

The evaluation method was as follows.

The military strength of the mystery test is 80 with the cold and hot cross power, Lito Eriksen.
Evaluation was made by the Erichsen method at 0°C.

In the cold and hot cross-cut Erichsen method, cuts are made with a knife into the acrylic film on the surface at 511μ intervals, and after 7 extrusion processes, 60°C x 0 hours and 0°C x 6 hours are repeated.
One cycle is a forced peeling test after 100 cycles, and the 80°C water blackening method is %
This is a forced peel test after 5 cycles of kneading and t1 cycles of immersion in 80' cil water x 0 hours 192 fjt and room temperature water 18 R after 7IIIJ extrusion processing in which cuts were made with a knife in the acrylic film at 5+u intervals.

Scratching property test The scratching property of the paint film was evaluated using a set of scratch testers (Nihon Rigaku Kogyo), a falling sand test, a coin scratch test, and a pencil scratch tester (Eriksen AG, West Germany). The abrasion Yoshi tester is used to test the abrasion resistance performance of the surface of the layer, and wear wheels C8-10 and C5-
The wear was evaluated by rI+r weight 11iT wear lXd at 1000 rotations using 17'ff.

In the sand drop test, silica sand No. 4 (particle size 840 to 1000 μm) was dropped onto the coating surface at a rate of 2/min at a 45 degree angle from a height of 1 m, and abnormalities on the fallen film surface were examined.

Coin scratching is a sensory test in which a 10 yen coin 2 is used to leave a scratch on the surface of the coating film and examine the degree of scratching.

Pencil scratch tester? In the test, it was judged based on the limit of electrical protection caused by dust entering the surface of the paint film.

Corrosion Resistance Test Abnormalities on the surface of the coating film were examined after 2000 hours using a salt spray tester (manufactured by Suga Test Instruments) according to JIS-22371.

Weatherability Test Abnormalities on the surface of the egg membrane were examined after 5000 hours using a sunshine weather meter (manufactured by Suga Shikiha) according to JIS-A1415.

Workability test 2T180' close bending, 00° press bending and impact (
+4 x 1 kg x 50 ann, two sets of cracks were visually observed on the processed product.

Table 1 shows the evaluation results of workability, adhesion, and scratch resistance of each acrylic film laminated metal plate. Evaluation criteria is 5 points [
5 points (excellent) → 1 point (poor)] and expressed as ◎-5 points, ○-good points, Δ-2 to 3 points, and ×-1 points.

Table 1 and Table 2 show the evaluation results of the corrosion resistance and weather resistance of the Tani acrylic film 挠*-board.

From the results in Tables 1 and 2, the acrylic film laminated metal plate of Example 1.2 had no effect on weather resistance or adhesion.
It was necessary to have excellent corrosion resistance and improved scratch resistance.

Examples 1 and 2. Examples Convex to 7> The composition of the inorganic fibers mixed in the acrylic film was changed in the same manner as in Example 1. 9) Then the film plate Its + metal plate was obtained. Next, we investigated the processability and material properties of the obtained valley acrylic film laminated metal plate.

Table 3 shows the results of each scratch resistance test.

From the surface-convex results, it is found that when the blending level of inorganic fibers in the entire acrylic film is less than 0.3% by weight, the scratch resistance is poor, and when it exceeds 30% by weight, the processability and mounting properties are poor. It was confirmed that it was inferior.

〔Effect of the invention〕

As mentioned above, the present invention provides polymethyl methacrylate yarn m
The acrylic film, which is formed by distributing inorganic fibers to the fat and the total amount of 0, convex to 0 convex layers, is coated on the metal board via a adhesive, so the properties of the acrylic film make it weather resistant. and.

In addition to being highly durable, the inorganic fibers are evenly distributed in the acrylic film, increasing the tensile strength of the acrylic film and increasing the surface hardness of one film. When this acrylic film laminated metal plate is molded or installed into roofing materials, etc., does it prevent scratches and cracks from occurring in the corrugated film and corrosion of the metal plate? It is something that can be prevented.

Agent Patent Attorney Ishi 1) Choshichi −9ζ〇−

Claims (1)

[Claims] An acrylic film formed by blending heat-cured fibers into an ill polymethyl methacrylate cross-grain film and forming an acrylic film with all wrinkles from O05 to convex O heavy wrinkles is attached to a metal plate via an adhesive. A metal plate with an acrylic film and a metal plate that fits at least. (2) Polymethyl methacrylate thread resin is polymerized with acrylic acid alkyl ester and methacrylic acid alkyl ester in the presence of a crosslinked copolymer elastomer dispersion obtained by polymerizing methyl methacrylate. The acrylic film laminated metal sheet according to claim 1, characterized in that it is formed of a kraft polymer resin obtained by copolymerizing an acrylic acid alkyl ester with a kraft polymer resin.