JP4981296B2 - Melting type road marking material - Google Patents
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- JP4981296B2 JP4981296B2 JP2005296327A JP2005296327A JP4981296B2 JP 4981296 B2 JP4981296 B2 JP 4981296B2 JP 2005296327 A JP2005296327 A JP 2005296327A JP 2005296327 A JP2005296327 A JP 2005296327A JP 4981296 B2 JP4981296 B2 JP 4981296B2
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Description
本発明は、アスファルト舗装面、コンクリート舗装面等の上に、表面に突起を有する路面標示塗膜を形成するために適した溶融型路面標示材料に関するものである。 The present invention relates to a melt-type road marking material suitable for forming a road marking coating film having protrusions on an asphalt pavement surface, a concrete pavement surface, or the like.
従来の突起を有する路面標示線の形成に用いられる溶融型路面標示材料、例えば視覚障害者誘導用標示や高輝度路面標示に用いられる材料は、軟化点が８０〜１１０℃の熱可塑性樹脂（石油樹脂、ロジン、テルペン樹脂等）と、充填材及びガラスビーズを主成分としているが、形成された塗膜が冬期における寒冷クラックと経日における老化クラックが発生し、夏場は路面温度が６０℃を超えるような高温になると材料が軟化し、車両等が走行することにより塗膜がへこみ、視認性や形状認識による誘導効果が低下する問題等が発生していた（例えば、特許文献１を参照。）。
本発明は、クラックの発生を抑え、高温下でも耐変形性に優れる溶融型路面標示材料を提供するものである。 The present invention suppresses the generation of cracks, and provides a melt-type road marking material which is excellent in deformation resistance even hot below.
すなわち、本発明は、下記の溶融型路面標示材料に関する。
（１）表面に突起を有する路面標示線の形成に用いられる溶融型路面標示材料であって、軟化点８０〜１５０℃の熱可塑性樹脂、ゴム弾性樹脂及び充填材を含有し、熱可塑性樹脂の含有量が８．０〜２５．０質量％であり、ゴム弾性樹脂の含有量が１．０〜１０．０質量％であり、ゴム弾性樹脂がエチレンエチルアクリレート共重合樹脂及びオレフィン系熱可塑性エラストマーを含有するものであることを特徴とする溶融型路面標示材料。
That is, the present invention relates to the following melt-type road marking material.
(1) A melt-type road marking material used for forming road marking lines having protrusions on the surface, which includes a thermoplastic resin having a softening point of 80 to 150 ° C., a rubber elastic resin, and a filler. The content is 8.0 to 25.0 mass%, the content of the rubber elastic resin is 1.0 to 10.0 mass%, and the rubber elastic resin is an ethylene ethyl acrylate copolymer resin and an olefinic thermoplastic elastomer. A melt-type road marking material characterized by comprising:
（２）ゴム弾性樹脂が軟化点４０〜１５０℃を有している（１）に記載の溶融型路面標示材料。 (2) The melt type road marking material according to (1), wherein the rubber elastic resin has a softening point of 40 to 150 ° C.
（３）エチレンエチルアクリレート共重合樹脂がエチルアクリレート含有量が２０〜４０質量％、メルトインデックスが２００〜１，２００ｇ／１０分であり、オレフィン系熱可塑性エラストマーがプロピレンエチレン共重合エラストマーであり、軟化点が１２０〜１５０℃、２００℃における溶融粘度が１，５００〜９，０００ｍＰａ・ｓである（１）又は（２）に記載の溶融型路面標示材料。 (3) Ethylene ethyl acrylate copolymer resin has an ethyl acrylate content of 20 to 40% by mass, a melt index of 200 to 1,200 g / 10 min, an olefin thermoplastic elastomer is a propylene ethylene copolymer elastomer, and is softened The melt road marking material according to (1) or (2), wherein the point is 120 to 150 ° C. and the melt viscosity at 200 ° C. is 1,500 to 9,000 mPa · s.
（４）溶融型路面標示材料中の充填材の含有量が３５〜７５質量％である（１）〜（３）いずれかに記載の溶融型路面標示材料。
（５）更に反射材１０〜３０質量％を含有する（１）〜（４）いずれかに記載の溶融型路面標示材料。
（６）更に可塑剤０．５〜３．０質量％を含有する（１）〜（５）いずれかに記載の溶融型路面標示材料。
(4) The melt type road marking material according to any one of (1) to (3), wherein the content of the filler in the molten type road marking material is 35 to 75% by mass.
(5) The melt type road marking material according to any one of (1) to (4), further containing 10 to 30% by mass of a reflective material.
(6) The melt type road marking material according to any one of (1) to (5), further containing 0.5 to 3.0% by mass of a plasticizer.
本発明の溶融型路面標示材料は、従来の材料に比べ、初期及び経日での耐クラック性、耐へこみ性（夏場，盛夏時においても変形せず、形状維持）に優れていることが確認できた。 It is confirmed that the melt-type road marking material of the present invention is superior in crack resistance and dent resistance at the initial stage and over time (not deformed even in summer and midsummer, maintaining shape) compared to conventional materials. did it.
本発明に使用する熱可塑性樹脂の例としては、石油樹脂、マレイン化ロジン、マレイン化ロジンエステル、水添ロジン、水添石油樹脂、テルペン樹脂、ポリプロピレン樹脂、ポリエチレン樹脂などがあり、軟化点が８０〜１５０℃の範囲のものを用いる。熱可塑性樹脂の軟化点が８０℃未満であると、耐へこみ性の向上効果が小さくなる傾向があり、１５０℃を超えると、溶融型路面標示材料を塗料としたときに増粘する傾向があり、また、可撓性が低下する傾向がある。 Examples of the thermoplastic resin used in the present invention include petroleum resin, maleated rosin, maleated rosin ester, hydrogenated rosin, hydrogenated petroleum resin, terpene resin, polypropylene resin, polyethylene resin and the like, and the softening point is 80. The thing of the range of -150 degreeC is used. If the softening point of the thermoplastic resin is less than 80 ° C., the effect of improving the dent resistance tends to be reduced, and if it exceeds 150 ° C., the viscosity tends to increase when the melt type road marking material is used as a paint. Also, the flexibility tends to decrease.
熱可塑性樹脂としては、特に、石油樹脂（無変性脂肪族系石油樹脂、酸変性脂肪族系石油樹脂）とテルペン樹脂にフェノール樹脂を共重合させたテルペンフェノール樹脂とを併用することが好ましく、これにより耐変形性が大幅に向上する。石油樹脂とテルペンフェノール樹脂に加えて、他の熱可塑性樹脂を更に併用してもよい。石油樹脂の軟化点は８０〜１００℃が好ましく、特に８５〜９５℃が好ましい。石油樹脂の軟化点が８０℃未満であると、耐へこみ性の向上効果が小さくなる傾向があり、１００℃を超えると、溶融型路面標示材料を塗料としたときに増粘する傾向があり、また、可撓性が低下する傾向がある。テルペンフェノール樹脂の軟化点は１２５〜１５０℃が好ましく、特に１４５〜１５０℃が好ましい。テルペンフェノール樹脂の軟化点が１２５℃未満であると、耐へこみ性の向上効果が小さくなる傾向があり、１５０℃を超えると、溶融型路面標示材料を塗料としたときに増粘する傾向があり、また、可撓性が低下する傾向がある。 As the thermoplastic resin, it is particularly preferable to use a petroleum resin (unmodified aliphatic petroleum resin, acid-modified aliphatic petroleum resin) and a terpene phenol resin obtained by copolymerizing a terpene resin with a phenol resin. As a result, the deformation resistance is greatly improved. In addition to petroleum resin and terpene phenol resin, other thermoplastic resins may be used in combination. The softening point of the petroleum resin is preferably from 80 to 100 ° C, particularly preferably from 85 to 95 ° C. If the softening point of the petroleum resin is less than 80 ° C., the effect of improving the dent resistance tends to be reduced, and if it exceeds 100 ° C., the viscosity tends to increase when the melt-type road marking material is used as a paint, Moreover, there exists a tendency for flexibility to fall. The softening point of the terpene phenol resin is preferably 125 to 150 ° C, particularly preferably 145 to 150 ° C. If the softening point of the terpene phenol resin is less than 125 ° C, the effect of improving the dent resistance tends to be reduced, and if it exceeds 150 ° C, the viscosity tends to increase when the molten road marking material is used as a paint. Also, the flexibility tends to decrease.
本発明になる溶融型路面標示材料中の熱可塑性樹脂の全量は、８．０〜２５．０質量％であり、好ましくは９．０〜２０．０質量％、より好ましくは１０．０〜１５．０質量％である。熱可塑性樹脂の配合量が８．０質量％未満であると、溶融型路面標示材料を塗料としたときに塗料が増粘する傾向があり、また、耐クラック性、耐ヘコミ性が低下する傾向があり、２５．０質量％を超えると、耐クラック性、耐へこみ性が低下し、さらに混練材料のブロッキングが発生しやすくなる傾向がある。 The total amount of the thermoplastic resin in the melt-type road marking material according to the present invention is 8.0 to 25.0% by mass, preferably 9.0 to 20.0% by mass, and more preferably 10.0 to 15%. 0.0% by mass. If the blending amount of the thermoplastic resin is less than 8.0% by mass, the paint tends to thicken when the melt-type road marking material is used as a paint, and crack resistance and dent resistance tend to decrease. If it exceeds 25.0% by mass, crack resistance and dent resistance are lowered, and further, blocking of the kneaded material tends to occur.
石油樹脂とテルペンフェノール樹脂を併用する場合、本発明の溶融型路面標示材料中の石油樹脂の配合量は７．９〜２４．９質量％が好ましく、８〜２０質量％がより好ましく、テルペンフェノール樹脂の配合量は、０．１〜５．０質量％が好ましく、０．５〜３．０質量％がより好ましい。テルペンフェノール樹脂の配合量が少ないと耐変形性の向上が小さくなることあり、配合量が多いと標示材料の増粘傾向と可とう性の低下が見られることがある。 When the petroleum resin and the terpene phenol resin are used in combination, the blending amount of the petroleum resin in the melt-type road marking material of the present invention is preferably 7.9 to 24.9% by mass, more preferably 8 to 20% by mass, 0.1-5.0 mass% is preferable and, as for the compounding quantity of resin, 0.5-3.0 mass% is more preferable. When the blending amount of the terpene phenol resin is small, the improvement in deformation resistance may be small, and when the blending amount is large, the tendency to increase the viscosity of the marking material and the flexibility may be observed.
耐クラック性改良に使用される材料であるゴム弾性樹脂としては、軟化点が４０〜１５０℃のものが好ましく、軟化点が８０〜１４０℃のものがより好ましい。軟化点が低すぎると夏場での塗膜へこみ、混錬材料のブロッキングがおこることがあり、軟化点が高すぎると標示材料の増粘、溶解性低下、耐クラック性の低下がおこることがある。 As a rubber elastic resin which is a material used for improving crack resistance, one having a softening point of 40 to 150 ° C is preferable, and one having a softening point of 80 to 140 ° C is more preferable. If the softening point is too low, it may dip into the coating film in the summer and block the kneaded material, and if the softening point is too high, it may increase the viscosity of the indicator material, lower the solubility, and decrease the crack resistance. .
本発明に用いられるゴム弾性樹脂は、（Ａ）エチレンエチルアクリレート共重合樹脂及び（Ｂ）オレフィン系熱可塑性エラストマー（例えば、エチレン/ブチレン共重合エラストマー、エチレン/プロピレン共重合エラストマー、プロピレン／エチレン共重合エラストマー等のオレフィン系共重合エラストマー、ハードセグメントにポリプロピレンやポリエチレンを用い、ソフトセグメントにエチレン、プロピレン、ジエン共重合体を用いたオレフィン系熱可塑性エラストマー等）を必須成分として含有する。この必須成分以外に、エチレン酢酸ビニル共重合樹脂、低密度ポリエチレン等を必要に応じて用いてもよく、また、オレフィン系熱可塑性エラストマー以外の熱可塑性合成ゴム、例えば、スチレン系熱可塑性エラストマー、ウレタン系熱可塑性エラストマー、ポリエステル系熱可塑性エラストマー、塩ビ系熱可塑性エラストマー、ポリブタジエン系熱可塑性エラストマー、ポリアミド系熱可塑性エラストマー、芳香族ポリエステルと非晶質ポリエーテルや脂肪族ポリエステルからなるポリエステル系熱可塑性エラストマーなども必要に応じて用いてもよい。 The rubber elastic resin used in the present invention includes (A) ethylene ethyl acrylate copolymer resin and (B) olefin-based thermoplastic elastomer (for example, ethylene / butylene copolymer elastomer, ethylene / propylene copolymer elastomer, propylene / ethylene copolymer). Olefin-based copolymer elastomers such as elastomers, olefin-based thermoplastic elastomers using polypropylene, polyethylene for the hard segment, and ethylene, propylene, and diene copolymers for the soft segment are included as essential components. In addition to this essential component, ethylene vinyl acetate copolymer resin, low-density polyethylene, etc. may be used as required, and thermoplastic synthetic rubbers other than olefinic thermoplastic elastomers, such as styrene thermoplastic elastomers, urethanes Thermoplastic elastomers, polyester thermoplastic elastomers, PVC thermoplastic elastomers, polybutadiene thermoplastic elastomers, polyamide thermoplastic elastomers, polyester thermoplastic elastomers composed of aromatic polyester and amorphous polyether or aliphatic polyester, etc. May also be used as needed.
（Ａ）エチレンエチルアクリレート共重合樹脂及び熱可塑性合成ゴム系の（Ｂ）オレフィン系熱可塑性エラストマー（特に、プロピレン／エチレン共重合エラストマー、エチレン／プロピレン共重合エラストマー等のオレフィン系共重合エラストマー）を併用すると、耐クラック性の向上が著しく、好ましい。（Ａ）／（Ｂ）の質量比率は１／４〜３／２が好ましく、特に２／５〜３／５が好ましい。（Ａ）／（Ｂ）の質量比率が１／４未満であると、耐クラック性が低下する傾向があり、３／２を超えても、耐クラック性が低下する傾向がある。エチレンエチルアクリレート共重合樹脂としては、エチルアクリレート含有量が２０〜４０質量％であるものが好ましく、２５〜３５質量％であるものがより好ましい。この含有量が２０質量％未満であると、熱可塑性樹脂との相溶性が悪くなり、標示材料の増粘、溶解性の低下が生じる傾向があり、４０質量％を超えると、夏場での塗膜へこみ、混練材料のブロッキングが発生する傾向がある。また、エチレンエチルアクリレート共重合樹脂のメルトインデックスは、２００〜１，２００ｇ／１０分であることが好ましく、２５０〜１，０００ｇ／１０分であることがより好ましい。エチレンエチルアクリレート共重合樹脂のメルトインデックスが２００ｇ／１０分未満であると、標示材料の増粘、溶解性の低下が生じる傾向があり、１，２００ｇ／１０分を超えると、標示材料の圧縮強さ、経日における耐へこみ性が低下する傾向がある。オレフィン系熱可塑性エラストマーは、軟化点が１２０〜１５０℃であることが好ましく、１２８〜１３８℃であることがより好ましく、２００℃における溶融粘度が１，５００〜９，０００ｍＰａ・ｓであることが好ましく、２，４００〜９，０００ｍＰａ・ｓであることがより好ましく、３，０００〜９，０００ｍＰａ・ｓであることがさらに好ましく、３，５００〜８，５００ｍＰａ・ｓであることが特に好ましい。オレフィン系熱可塑性エラストマーの軟化点が１２０℃未満であると、耐クラック性を向上させる効果が小さくなる傾向があり、１５０℃を超えても、耐クラック性向上の効果が小さくなる傾向がある。また、オレフィン系熱可塑性エラストマーの溶融粘度が１，５００ｍＰａ・ｓ未満であると、標示材料の圧縮強さ、経日における耐へこみ性が低下する傾向があり、９，０００ｍＰａ・ｓを超えると、標示材料の増粘、溶解性の低下がみられる傾向がある。 (A) ethylene ethyl acrylate copolymer resin and thermoplastic synthetic rubber (B) olefin thermoplastic elastomer (especially olefin copolymer elastomers such as propylene / ethylene copolymer elastomer and ethylene / propylene copolymer elastomer) Then, the improvement of crack resistance is remarkably preferable. The mass ratio of (A) / (B) is preferably 1/4 to 3/2, and particularly preferably 2/5 to 3/5. When the mass ratio of (A) / (B) is less than 1/4, the crack resistance tends to decrease, and even if it exceeds 3/2, the crack resistance tends to decrease. The ethylene ethyl acrylate copolymer resin preferably has an ethyl acrylate content of 20 to 40% by mass, and more preferably 25 to 35% by mass. If this content is less than 20% by mass, the compatibility with the thermoplastic resin will be poor, and the viscosity of the marking material will tend to increase and the solubility will decrease. If it exceeds 40% by mass, it will be applied in summer. There is a tendency that the film is dented and the kneaded material is blocked. The melt index of the ethylene ethyl acrylate copolymer resin is preferably 200 to 1,200 g / 10 minutes, and more preferably 250 to 1,000 g / 10 minutes. If the melt index of the ethylene ethyl acrylate copolymer resin is less than 200 g / 10 min, the marking material tends to increase in viscosity and decrease in solubility. There is a tendency for the dent resistance in the passage of time to decrease. The olefinic thermoplastic elastomer preferably has a softening point of 120 to 150 ° C, more preferably 128 to 138 ° C, and a melt viscosity at 200 ° C of 1,500 to 9,000 mPa · s. Preferably, it is 2,400 to 9,000 mPa · s, more preferably 3,000 to 9,000 mPa · s, and particularly preferably 3,500 to 8,500 mPa · s. If the softening point of the olefinic thermoplastic elastomer is less than 120 ° C, the effect of improving crack resistance tends to be small, and if it exceeds 150 ° C, the effect of improving crack resistance tends to be small. In addition, when the melt viscosity of the olefinic thermoplastic elastomer is less than 1,500 mPa · s, the compression strength of the marking material tends to decrease, and the dent resistance over time, and when it exceeds 9,000 mPa · s, There is a tendency for the marking material to increase in viscosity and decrease in solubility.
なお、本明細書中、軟化点はＪＩＳ Ｋ２２０７に、メルトインデックスはＪＩＳ Ｋ６９２４−２に、溶融粘度はＪＩＳ Ｋ２２０７に準拠して測定した値である。 In this specification, the softening point is a value measured according to JIS K2207, the melt index is measured according to JIS K6924-2, and the melt viscosity is a value measured according to JIS K2207.
ゴム弾性樹脂の配合量は、本発明になる溶融型路面標示材料中に１．０〜１０．０質量％配合され、特に２．０〜６．０質量％配合することが好ましい。ゴム弾性樹脂の配合量が少なすぎると、耐クラック性を向上させる効果が小さく、多すぎると材料の耐変形性低下に伴って夏場でのへこみが発生しやすくなる。 The compounding amount of the rubber elastic resin is preferably 1.0 to 10.0% by mass, particularly preferably 2.0 to 6.0% by mass, in the melt-type road marking material according to the present invention. If the amount of the rubber elastic resin is too small, the effect of improving the crack resistance is small, and if it is too large, dents are likely to occur in summer with a decrease in the deformation resistance of the material.
本発明の溶融型路面標示材料には上記の樹脂以外に、充填材を必須成分として含有し、更に、必要に応じて反射材、可塑剤、着色顔料、その他の添加剤等を含有していてもよい。 In addition to the above resins, the melt-type road marking material of the present invention contains a filler as an essential component, and further contains a reflector, a plasticizer, a color pigment, other additives, etc. as necessary. Also good.
充填材としては、炭酸カルシウムの微粉、寒水石、タルク等の従来から用いられているものを使用できる。その配合量は、本発明になる溶融型すべり止め標示材料中に３５〜７５質量％が好ましく、４０〜６５質量％がより好ましい。充填材が少なすぎると、耐摩耗性が低下しやすくなり、充填材が多すぎると、施工時の作業性が低下しやすくなる。 As the filler, conventionally used ones such as calcium carbonate fine powder, cold water stone, and talc can be used. The blending amount is preferably 35 to 75% by mass, and more preferably 40 to 65% by mass in the melt-type non-slip labeling material according to the present invention. If the amount of the filler is too small, the wear resistance tends to be lowered, and if the amount of the filler is too large, the workability during construction tends to be lowered.
反射材としては、例えば、ガラスビーズ、ガラス粉など、従来用いられているものを用いることができる。ガラスビーズとしては、屈折率１．５〜２．５、粒径０．１〜３．０ｍｍのものが好ましい。屈折率が１．５未満であると、視認性が不十分となる傾向があり、２．５を超えると、光が屈折しすぎて再帰反射せず、視認性に劣ることとなる傾向がある。粒径が３．０ｍｍを超えると、塗料からガラスビーズが離脱しやすく、視認性低下につながる傾向がある。反射材の配合量は、本発明になる溶融型路面標示材料中に１０〜３０質量％が好ましく、１５〜２５質量％がより好ましい。反射材の量が少なすぎると、高輝度標示に用いられる場合等では夜間（雨天）時の視認性が低下しやすくなり、また、多すぎると、施工時の作業性が低下しやすくなる。 As the reflective material, for example, conventionally used materials such as glass beads and glass powder can be used. The glass beads preferably have a refractive index of 1.5 to 2.5 and a particle size of 0.1 to 3.0 mm. If the refractive index is less than 1.5, the visibility tends to be insufficient, and if it exceeds 2.5, the light tends to be refracted too much to be retroreflected, resulting in poor visibility. . When the particle size exceeds 3.0 mm, the glass beads are likely to be detached from the paint, which tends to reduce visibility. 10-30 mass% is preferable in the melt type road marking material which becomes this invention, and the compounding quantity of a reflecting material has more preferable 15-25 mass%. If the amount of the reflecting material is too small, the visibility at night (rainy weather) is likely to be lowered when used for high-luminance marking, and if it is too much, the workability at the time of construction is likely to be lowered.
可塑剤としては、植物油、植物油変性アルキド樹脂、鉱物油、液状の合成ゴム等がある。その配合量は、本発明になる溶融型路面標示材料中に０．５〜３．０質量％が好ましく、０．７〜２．０質量％がより好ましい。可塑剤が多すぎると、夏場での塗膜へこみ、混錬材料のブロッキングを発生することがある。可塑剤が少ないと、低温時の可とう性、作業性が低下する傾向がある。 Examples of the plasticizer include vegetable oil, vegetable oil-modified alkyd resin, mineral oil, and liquid synthetic rubber. The blending amount is preferably 0.5 to 3.0% by mass, and more preferably 0.7 to 2.0% by mass in the melt-type road marking material according to the present invention. If there is too much plasticizer, it may dent into the coating film in summer and block the kneaded material. When there are few plasticizers, the flexibility and workability at low temperatures tend to be reduced.
着色顔料としては特に制限なく用いることができるが、歩行者、運転者に注意を促す用途が多いことから、主に黄系が多く耐熱黄鉛、有機系黄色顔料等が挙げられる。また赤系にはベンガラ（酸化鉄）が挙げられる。着色顔料配合量は、本発明になる溶融型路面標示材料中に１．５〜６．０質量％が好ましく、２．０〜５．０質量％がより好ましい。添加量が少ないと紫外線による耐退色性が低下する傾向があり、添加量が多いと耐退色性は良好であるが、作業性、可とう性が低下する傾向がある。 There are no particular restrictions on the color pigment, but there are many uses that call attention to pedestrians and drivers, so there are mainly yellowish and heat-resistant yellow lead, organic yellow pigments and the like. In addition, red type includes bengara (iron oxide). The blending amount of the color pigment is preferably 1.5 to 6.0% by mass, more preferably 2.0 to 5.0% by mass in the melt-type road marking material according to the present invention. When the addition amount is small, the fading resistance due to ultraviolet rays tends to decrease, and when the addition amount is large, the fading resistance is good, but the workability and flexibility tend to decrease.
その他必要に応じて沈降防止剤、紫外線吸収剤、粘度降下剤等の添加剤を添加しても良い。本発明において前述した配合される成分は総量が１００質量％になるように各配合量が調整される。 In addition, additives such as an antisettling agent, an ultraviolet absorber, and a viscosity reducing agent may be added as necessary. In the present invention, the amount of each component described above is adjusted so that the total amount becomes 100% by mass.
本発明の溶融型路面標示材料を用いる標示方法は、例えば、路面に下地処理（プライマー塗布）をしてから上記成分を溶解釜で１８０〜２１０℃に溶解し、凸状リブ成型専用施工機等の施工機を用いて下地処理した路面上に施工し、表面に突起を有する路面標示塗膜形成することにより行うことができる。 The marking method using the melt-type road marking material of the present invention includes, for example, a ground treatment (primer coating) on the road surface, and then the above components are melted at 180 to 210 ° C. with a melting pot, and a convex rib molding dedicated construction machine, etc. It is possible to carry out by performing construction on a road surface that has been ground-treated using a construction machine, and forming a road marking coating film having protrusions on the surface.
突起は、一定厚みのベース標示線上にあることが好ましく、その形状や大きさに特に制限はなく、点状突起、線状突起、並列配列突起、ハーフドーム型突起等が挙げられる。通常、例えば、図１及び図２に示すような、ベース標示線１と一体化した凸状リブ２（断面台形の線上突起）が並列した線上突起が好ましい。なお、図１はこのような道路標示線の斜視図であり、図２は図１のＡ−Ａ断面図である。ベース標示線面からの突起の高さは０．５〜７．０ｍｍが好ましく、３．０〜６．０ｍｍがより好ましい。突起底部の幅又は直径は、１０〜１５０ｍｍが好ましく、１０〜５０ｍｍがより好ましい。線状突起の場合、その長さ（施工方向）に制限はないが、３０〜３００ｍｍが好ましく、その間隔は１０〜１００ｍｍが好ましい。なお、標示線の幅に制限はないが、一般に１００〜４５０ｍｍ程度である。 The protrusions are preferably on a base marking line having a constant thickness, and the shape and size thereof are not particularly limited, and examples thereof include dot-like protrusions, linear protrusions, parallel array protrusions, and half dome-shaped protrusions. Usually, for example, linear protrusions in which convex ribs 2 (linear protrusions having a trapezoidal cross section) integrated with the base marking line 1 are preferable as shown in FIGS. 1 and 2. 1 is a perspective view of such a road marking line, and FIG. 2 is a cross-sectional view taken along line AA of FIG. The height of the protrusion from the base marking line surface is preferably 0.5 to 7.0 mm, and more preferably 3.0 to 6.0 mm. 10-150 mm is preferable and, as for the width | variety or diameter of a processus | protrusion bottom part, 10-50 mm is more preferable. In the case of linear protrusions, the length (construction direction) is not limited, but is preferably 30 to 300 mm, and the interval is preferably 10 to 100 mm. The width of the marking line is not limited, but is generally about 100 to 450 mm.
本発明において軟化点８０〜１５０℃の熱可塑性樹脂にエチレンエチルアクリレート共重合樹脂とオレフィン系熱可塑性エラストマーを併用して配合した溶融型路面標示材料は、経日において耐クラック性、耐へこみ性の向上効果が得られる。 In the present invention, a melt type road marking material in which an ethylene ethyl acrylate copolymer resin and an olefinic thermoplastic elastomer are used in combination with a thermoplastic resin having a softening point of 80 to 150 ° C. has crack resistance and dent resistance over time. Improvement effect is obtained.
次に実施例及び比較例に基づいて本発明を詳細に説明するが、本発明はこれに限定されるものではない。
表１−１及び表２−１に実施例及び比較例で調製した溶融型路面標示材料の組成を、表１−２及び表２−２に、それら溶融型路面標示材料の試験結果を示す。表１−１及び表２−１に記載した各成分の量は、質量部で示した。表３には、各試験における判定基準を示した。
EXAMPLES Next, although this invention is demonstrated in detail based on an Example and a comparative example, this invention is not limited to this.
Tables 1-1 and 2-1 show the compositions of the melt-type road marking materials prepared in Examples and Comparative Examples, and Tables 1-2 and 2-2 show the test results of these melt-type road marking materials. The amount of each component described in Table 1-1 and Table 2-1 is shown in parts by mass. Table 3 shows the criteria for each test.
実施例１〜８及び比較例１〜７
表１−１及び表２−１に記載の成分をミキサーで混合した後、ポリエチレン製袋に詰めて、溶融型路面標示材料を得た。次いで車載式ニーダに投入し加熱溶融した後、専用施工機を用いて溶融温度１８０〜２１０℃、標示線幅３０ｃｍ、長さ１３ｍで、図１、図２に示すような視覚障害者誘導用線状突起標示をＪＩＳ Ｔ ９２５１に準じて公道路面（アスファルト舗装面及びコンクリート路面）に施工し、３ケ月後における塗膜の耐クラック性、耐へこみ性を目視にて評価した。
また初期試験結果（１５℃耐クラック試験、耐変形性試験）も併せて評価した。
Examples 1-8 and Comparative Examples 1-7
The components described in Table 1-1 and Table 2-1 were mixed with a mixer and then packed in a polyethylene bag to obtain a melt-type road marking material. Next, after being put into an in-vehicle kneader and heated and melted, a visually impaired person guiding line as shown in FIG. 1 and FIG. The markings were applied to public road surfaces (asphalt pavement surface and concrete road surface) according to JIS T 9251, and the crack resistance and dent resistance of the coating film after 3 months were visually evaluated.
In addition, initial test results (15 ° C. crack resistance test, deformation resistance test) were also evaluated.
初期試験（１５℃耐クラック試験、耐変形性試験）、耐クラック性、耐へこみ性の評価方法は下記のとおりである。
１５℃耐クラック試験：１００×３００×１．５ｍｍのアルミ板に、２００℃に溶融した標示材料を幅６０ｍｍ、厚み５ｍｍに塗布し、試験板とした。測定温度１５℃で試験板の一端を固定し、６ｍｍマンドレルを中心に折り曲げ、塗膜にクラックが入った時点を終了とした。折り曲げ端部の変位量を示した。
Evaluation methods for initial tests (15 ° C crack resistance test, deformation resistance test), crack resistance, and dent resistance are as follows.
15 ° C. crack resistance test: A sign material melted at 200 ° C. was applied to a 100 × 300 × 1.5 mm aluminum plate to a width of 60 mm and a thickness of 5 mm to obtain a test plate. One end of the test plate was fixed at a measurement temperature of 15 ° C., bent around a 6 mm mandrel, and the coating was cracked. The amount of displacement at the bent end is shown.
耐変形性試験：２０ｍｍ×２０ｍｍ×２０ｍｍの試料に２ｋｇの分銅を乗せ、８０℃、６０分で耐変形性を試験した。（数値が大きい程、耐変形性に優れる）
耐変形性（％）＝［試験後の試料の高さ（ｍｍ）／２０（ｍｍ）］×１００
Deformation resistance test: A sample of 20 mm × 20 mm × 20 mm was loaded with a weight of 2 kg, and the deformation resistance was tested at 80 ° C. for 60 minutes. (The larger the value, the better the deformation resistance)
Deformation resistance (%) = [height of sample after test (mm) / 20 (mm)] × 100
表１−１及び表２−１中の各成分の物性を、以下に示す。
酸変性脂肪族系石油樹脂（マルカレッツＲ−１００ＧＳ）
軟化点： ９６℃
無変性脂肪族系石油樹脂（Ｒ−１００）
軟化点： ９６℃
テルペンフェノール樹脂（ＹＳポリスターＳ１４５）
軟化点： １４５℃
エチレンエチルアクリレート共重合樹脂（ＮＵＣ６０７０）
エチルアクリレート含有量： ３０質量％
軟化点： ９６℃
メルトインデックス： ２５０ｇ／１０分
オレフィン系共重合エラストマー（ＲＴ２３３０Ａ、プロピレン／エチレン共重合エラストマー）
軟化点： １４１℃
２００℃における溶融粘度： ２，５００ｍＰａ・ｓ
エチレン酢酸ビニル共重合樹脂（ウルトラセン７２０）
メルトインデックス： １５０ｇ／１０分
軟化点： ９２℃
２００℃における溶融粘度： ３５０ｍＰａ・ｓ
反射材（ＧＢ−１５３、ガラスビーズ）
屈折率： １．５２
粒径： ０．１０６〜０．８５ｍｍ
The physical properties of each component in Table 1-1 and Table 2-1 are shown below.
Acid-modified aliphatic petroleum resin (Marcaretz R-100GS)
Softening point: 96 ° C
Unmodified aliphatic petroleum resin (R-100)
Softening point: 96 ° C
Terpene phenol resin (YS Polystar S145)
Softening point: 145 ° C
Ethylene ethyl acrylate copolymer resin (NUC6070)
Ethyl acrylate content: 30% by mass
Softening point: 96 ° C
Melt index: 250 g / 10 min olefin copolymer elastomer (RT2330A, propylene / ethylene copolymer elastomer)
Softening point: 141 ° C
Melt viscosity at 200 ° C .: 2,500 mPa · s
Ethylene vinyl acetate copolymer resin (Ultrasen 720)
Melt index: 150 g / 10 min Softening point: 92 ° C.
Melt viscosity at 200 ° C .: 350 mPa · s
Reflective material (GB-153, glass beads)
Refractive index: 1.52
Particle size: 0.106-0.85mm
施工後の耐クラック性、耐へこみ性判定基準
本発明の溶融型路面標示材料（実施例１〜８）は、耐クラック性、耐へこみ性に優れ、経日においても向上効果が得られた。本発明の溶融型路面標示材料の必須成分である熱可塑樹脂及びゴム弾性樹脂を用いないもの（比較例１）、本発明の範囲外の質量％で熱可塑性樹脂（比較例２，３）又はゴム弾性樹脂を併用している（比較例４，５）は、耐クラック性、耐へこみ性に劣り好ましくない。比較例６，７はゴム弾性樹脂が単独で使用され、耐クラック性、耐へこみ性が著しく劣る。 The melt-type road marking material of the present invention (Examples 1 to 8) was excellent in crack resistance and dent resistance, and an improvement effect was obtained even over time. Those not using the thermoplastic resin and rubber elastic resin, which are essential components of the melt-type road marking material of the present invention (Comparative Example 1), the thermoplastic resin (Comparative Examples 2 and 3) in mass% outside the scope of the present invention It is not preferable that rubber elastic resin is used in combination (Comparative Examples 4 and 5) because of poor crack resistance and dent resistance. In Comparative Examples 6 and 7, a rubber elastic resin is used alone, and crack resistance and dent resistance are remarkably inferior.
１ ベース標示線
２ 凸状リブ
1 Base marking line 2 Convex rib
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| RU2789045C1 (en) * | 2022-09-23 | 2023-01-27 | Владимир Ильич Бочкарев | Road reflector |
| WO2024063672A1 (en) * | 2022-09-23 | 2024-03-28 | Владимир Ильич БОЧКАРЕВ | Retro-reflective road stud |
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| CN103834303A (en) * | 2013-08-12 | 2014-06-04 | 洛阳骏腾能源科技有限公司 | High-molecular material for vehicle tyre |
| CN103849285A (en) * | 2013-10-14 | 2014-06-11 | 洛阳骏腾能源科技有限公司 | Automatic bonding and coating polymer adhesive powder with temperature resistance |
| CN103849286A (en) * | 2013-10-15 | 2014-06-11 | 洛阳骏腾能源科技有限公司 | High polymer explosion-proof material used for tyre safety |
| CN103849287A (en) * | 2013-10-15 | 2014-06-11 | 洛阳骏腾能源科技有限公司 | Self-sealing polymer rubber powder for inner wall of tire |
| CN103849290A (en) * | 2013-10-18 | 2014-06-11 | 洛阳骏腾能源科技有限公司 | High-molecular hot melt glue with self-sealing function and production method of hot melt glue |
| JP6113652B2 (en) * | 2013-12-27 | 2017-04-12 | 株式会社キクテック | Road line marking structure and construction method |
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| JPS5910706B2 (en) * | 1979-04-02 | 1984-03-10 | 日立化成工業株式会社 | Heat-welded road marking material |
| JPS62149769A (en) * | 1985-12-24 | 1987-07-03 | Nippon Petrochem Co Ltd | Hot-melt paint composition |
| JP3548791B2 (en) * | 1993-09-20 | 2004-07-28 | 積水樹脂株式会社 | Heat melting type road marking paint |
| JPH08113920A (en) * | 1994-10-14 | 1996-05-07 | Seitoo Kk | Construction method of road marking line |
| JP4051098B2 (en) * | 1997-02-03 | 2008-02-20 | 新日本石油株式会社 | Paving binder composition |
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| RU2789045C1 (en) * | 2022-09-23 | 2023-01-27 | Владимир Ильич Бочкарев | Road reflector |
| WO2024063672A1 (en) * | 2022-09-23 | 2024-03-28 | Владимир Ильич БОЧКАРЕВ | Retro-reflective road stud |
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