JP2006233010A - Repair coating - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a repair coating simply coating a signboard, e.g. a labeling plate made of an FRP or a signboard made of iron in which a protective film is deteriorated, suppressing growth of molds after repair and extending the effective duration of service of the labeling plate made of the FRP or the signboard made of the iron. etc. <P>SOLUTION: The repair coating comprises a principal component composed of an acrylic resin coating, an additive containing at least an antifoaming agent, a leveling agent and a mildewproofing agent, a urethane resin solvent and an isocyanate curing agent. Since the principal component composed of the acrylic resin coating can be regulated to a concentration usable at normal temperature (5-40°C) with a urethane resin solvent and simply coated by a spray method.Since the mildewproofing agent is contained as the additive, the growth of the molds after repair can be suppressed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a repair paint suitable for use in repairing, for example, a signboard made of fiber-reinforced plastics (FRP), an iron signboard whose surface is coated with a protective film, and the like.

  Specifically, the present invention includes a main agent composed of an acrylic resin paint, at least an additive including an antifoaming agent, a leveling agent, and an antifungal agent, a urethane solvent, and an isocyanate resin curing agent. For example, it can be easily repaired by applying a spray method to a signboard made of FRP with a deteriorated protective film, an iron signboard, etc., and suppressing the occurrence of mold after repair, This is related to the paint for repair that can extend the effective period of use such as iron signboards.

  The entry prohibition sign plate as shown in FIG. 1A and the climbing prohibition sign plate as shown in FIG. 1B, which are attached to the steel tower, are required to be installed according to the safety facility installation standard. As this type of labeling plate, an FRP labeling plate is known (for example, see Patent Document 1).

  2A and 2B show the configuration of the FRP sign board 1. FIG. 2A is a perspective view in which a part of the FRP sign board 1 is cut and disassembled, and FIG. 2B is a cross-sectional view of the main part of the FRP sign board 1.

  The FRP label 1 is composed of a paper body 6, FRP sheets 7 and 7, a protective film 8 and a flexible protective film 9. The paper body 6 is made of, for example, a rectangular white paper, and characters and figures 5 constituting a sign are printed on the surface thereof. The FRP sheet 7 is made of, for example, a plastic reinforced with glass fiber. The protective film 8 is made of, for example, an unsaturated polyester resin composed of maleic anhydride as an unsaturated dibasic acid, ethylene glycol as a dihydric alcohol, and styrene as a vinyl monomer. The flexible protective film 9 is made of, for example, a fluororesin.

  The FRP label 1 shown in FIGS. 2A and 2B is manufactured by the following procedure. First, FRP sheets 7 and 7 are brought into close contact with both front and back surfaces of a paper body 6 on which characters and figures 5 constituting a sign are printed to form a laminate. Next, this laminate is immersed in an unsaturated polyester resin poured into a mold. Next, this unsaturated polyester resin is hardened into a rectangular plate shape in a state where the laminate composed of the paper body 6 and the FRP sheets 7 and 7 is wrapped, thereby forming a protective film 8 covering the entire laminate. Finally, a flexible protective film 9 is formed by applying a quick-drying transparent paint made of a fluororesin on the protective film 8 corresponding to the printed surface side of the characters and figures 5 of the paper body 6.

Utility Model Registration No. 3086257

  In the FRP sign board 1 as described above, the protective film 8 and the flexible protective film 9 are deteriorated in about 5 to 8 years, the glass fibers of the FRP sheets 7 and 7 are raised, and characters and figures 5 are visible. It becomes difficult and does not function as a sign.

  Here, if the deterioration of the protective film 8 and the flexible protective film 9 can be repaired and the life of the FRP sign board 1 can be extended, the manufacturing cost of the FRP sign board 1 and the labor cost for its replacement can be reduced. This saves money and is convenient for the user.

  Also, for example, even in a signboard made of iron with a protective film coated on its surface, like the FRP sign board described above, if the protective film deteriorates, characters and figures become difficult to see due to the occurrence of mold, etc. Will not be fulfilled. Even in such a case, if the deterioration of the protective film can be repaired to extend the life of the signboard, the manufacturing cost of the signboard and labor costs for the replacement can be saved, which is convenient for the user.

  The object of the present invention is to easily repair the FRP marker plate or iron signboard, etc. by applying it to the FRP marker plate or iron signboard with a deteriorated protective film by spraying, and repairing mold after repair. An object of the present invention is to provide a paint for repairing that can suppress the occurrence and extend the effective use period of the FRP signboard, iron signboard, and the like.

  The repair coating according to the present invention includes a main agent composed of an acrylic resin paint, an additive containing at least an antifoaming agent, a leveling agent, and an antifungal agent, a urethane resin solvent, and an isocyanate resin curing agent. It contains.

  In this repair coating, the main agent composed of an acrylic resin coating can be used at a normal temperature (5 to 40 ° C.) with a urethane resin solvent. Therefore, for example, this FRP marker plate, iron signboard, etc. can be easily repaired by applying the repair paint to the FRP marker plate with a deteriorated protective film by a spray method using a spray can or spray bottle. .

  Further, this repair coating material contains an antifungal agent as an additive. Therefore, for example, after applying and repairing on an FRP sign board, an iron signboard, etc., generation | occurrence | production of mold | fungi can be suppressed and the effective use period of the said FRP sign board, iron signboard, etc. can be extended.

  In addition, you may make it further contain a ultraviolet absorber in an additive. Thus, by including an ultraviolet absorber in the additive, for example, it is possible to prevent photooxidation degradation due to ultraviolet rays of fiber reinforced plastics constituting the FRP label.

  According to the present invention, it contains a main agent composed of an acrylic resin coating, at least an additive including an antifoaming agent, a leveling agent, and an antifungal agent, a urethane-based solvent, and an isocyanate resin-based curing agent. For example, it can be easily repaired by applying the FRP labeling plate with a deteriorated protective film, an iron signboard, etc. by spraying, and suppressing the generation of mold after repairing. Effective use period of signboards can be extended.

  An anti-molding agent and an ultraviolet absorber are added to the non-yellowing polyurethane resin-based enamel paint to obtain a repair paint.

  As the non-yellowing polyurethane resin-based enamel paint, for example, Paine # 8040 (trade name) manufactured by Chuden Kogyo Co., Ltd. can be used. The composition of this Pine # 8040 is 75.6% by weight of an acrylic polyol resin varnish as a main agent, 0.2% by weight of an additive containing a silicon-based antifoaming agent and a leveling agent, and 4 polyurethane resins as a solvent. 2% by weight, and 20.0% by weight of the isocyanate resin varnish as a curing agent. Here, Paine # 8000 (trade name) manufactured by Chuden Kogyo is used as the polyurethane resin solvent.

  As the mold inhibitor, for example, Monside S (trade name) manufactured by Nippon Enviro Chemical can be used. This monicide S is a mixture of a halogenated sulfur compound and an organic nitrogen compound. The mixing ratio of the mold inhibitor is 1% by weight or more, for example, 1 to 3% by weight with respect to 100 parts by weight of Paine # 8040 in order to increase the effect of suppressing mold generation.

  As the ultraviolet absorber, for example, Tinuvin 900 (trade name) manufactured by Ciba Geigy can be used. The mixing ratio of the ultraviolet absorber is, for example, within 1% by weight with respect to 100 parts by weight of Paine # 8040.

  In the above-described repair coating, the concentration of the acrylic polyol resin varnish, which is an acrylic resin coating, is adjusted with a polyurethane resin solvent so that it can be used at room temperature (5 to 40 ° C.). Therefore, for example, this repair paint is applied to the FRP marker plate (see FIGS. 2A and 2B) with a deteriorated protective film or the iron signboard with a deteriorated surface protective film by a spray method using a spray can or a spray bottle. This FRP sign board or iron signboard can be easily repaired. According to this spraying application method, it is possible to perform construction easily and efficiently without requiring the skill level of the operator as in the case of brush coating, and it is possible to reduce the degree of transportation fatigue of the operator when working in a mountainous area.

  Further, the FRP marker plate repaired with the repair paint extends the period until the glass fiber comes out and the characters and figures are difficult to see, that is, the effective use period is extended. Similarly, for iron signboards and the like repaired with a repair paint, the period until characters and figures become difficult to see, that is, the effective use period is extended. As a result, it is possible to save manufacturing costs for FRP sign boards, iron signboards, etc., and labor costs for their replacement. In addition, since the anti-mold agent is included as an additive in the repair coating, generation of mold can be suppressed, and it is possible to prevent the letters and figures of the sign from becoming difficult to see with the mold. FRP sign board, made of iron The effective use period of billboards can be further extended.

  In addition, since this repair coating contains an ultraviolet absorber as an additive, for example, it is possible to prevent photo-oxidative deterioration due to ultraviolet rays of fiber reinforced plastics constituting the FRP marker plate. The effect of extending the effective use period can be obtained.

  In the above-described embodiment, the non-yellowing polyurethane resin-based enamel paint (Pine # 8040) is used, but other polyurethane resin-based enamel paints are used as long as they have the same composition as this. And the same repair coating material can be obtained by adding an antifungal agent and an ultraviolet absorber to it.

  Moreover, the mixing ratio of the mold inhibitor and the ultraviolet absorber described above is an example, and the present invention is not limited to this. This mixing ratio also varies depending on the type of polyurethane resin enamel paint, or the type of mold inhibitor and ultraviolet absorber.

  The present invention can be easily applied by a spray method and can suppress the occurrence of mold after repair. For example, an FRP signboard with a deteriorated protective film, an iron signboard, attached to a steel tower in a mountainous area, etc. It can be used when repairing etc.

It is a figure which shows an example of the label | marker attached to a steel tower. It is a figure which shows the structure of the label board made from FRP.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... FRP label board, 5 ... Character, figure, 6 ... Paper body, 7 ... FRP sheet, 8 ... Protective film, 9 ... Flexible protective film

Claims (2)

A main agent made of acrylic resin paint,
At least an additive comprising an antifoaming agent, a leveling agent and an antifungal agent;
A urethane resin solvent,
A repair paint comprising an isocyanate resin-based curing agent. The repair paint according to claim 1, wherein the additive further contains an ultraviolet absorber.

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