JP2009242534A - Coating material having excellent water resistance and chemical resistance - Google Patents
Coating material having excellent water resistance and chemical resistance Download PDFInfo
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- JP2009242534A JP2009242534A JP2008089900A JP2008089900A JP2009242534A JP 2009242534 A JP2009242534 A JP 2009242534A JP 2008089900 A JP2008089900 A JP 2008089900A JP 2008089900 A JP2008089900 A JP 2008089900A JP 2009242534 A JP2009242534 A JP 2009242534A
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Abstract
【課題】金属の表面部分やコンクリートとの接合部は、温度変化による金属の収縮・膨張など物理的変化や、紫外線、水、薬品性の化学物質（酸、アルカリ、塩水）などが浸潤される箇所では劣化が激しく塗膜の剥離が生じ易い。このため、表面強度や収縮膨張、耐水性、耐薬品性の向上を目的とした塗材で耐久性の高い状態を維持することができ、一液性で乾燥硬化する塗材の実現が望まれていた。
【解決手段】この発明は、ゴム系リサイクルカーボンとウレタンプレポリマー樹脂溶剤を主成分とする溶剤に混合させ耐水性、耐薬品性に優れた硬い塗膜を形成する一液性の硬化型塗材である。
【選択図】なし[PROBLEMS] A metal surface portion and a joint portion with concrete are infiltrated with physical changes such as metal shrinkage / expansion due to temperature change, ultraviolet rays, water, chemical substances (acid, alkali, salt water), etc. Degradation is severe at the location, and the coating film is easily peeled off. For this reason, it is possible to maintain a highly durable coating material for the purpose of improving surface strength, shrinkage expansion, water resistance, and chemical resistance, and it is desired to realize a coating material that is one-component and dry-curing. It was.
The present invention provides a one-component curable coating material which forms a hard coating film excellent in water resistance and chemical resistance by mixing in a solvent mainly composed of rubber-based recycled carbon and a urethane prepolymer resin solvent. It is.
[Selection figure] None
Description
この発明は、耐水性、耐薬品性に優れた一液で硬い塗膜を形成する塗材に関するものである。 The present invention relates to a coating material which forms a hard coating film with a single liquid excellent in water resistance and chemical resistance.
水槽タンクや外壁構造物、例えば鋼板金属の表面部分やコンクリートとの接合部など酸化による腐食が生じてくる。酸化を抑えるため、多くは樹脂組成物などによる防食塗膜で表面処理されている。 Corrosion due to oxidation occurs in a tank tank or an outer wall structure such as a surface portion of steel plate metal or a joint portion with concrete. In order to suppress oxidation, many are surface-treated with an anticorrosion coating with a resin composition or the like.
また、防食塗膜を形成するため樹脂と硬化剤からなる塗膜を形成するなど、工夫が施されている塗材が提案されている（例えば特許文献１参照。）。 In addition, a coating material that has been devised such as forming a coating film made of a resin and a curing agent to form an anticorrosion coating film has been proposed (see, for example, Patent Document 1).
塗膜形成の工夫が施されてきているが、温度変化による金属の収縮・膨張など物理的変化や、紫外線、水、薬品性の化学物質（酸、アルカリ、塩水）などが浸潤される箇所では劣化が激しく塗膜の剥離が生じ易い。 The film formation has been devised, but in places where physical changes such as metal shrinkage / expansion due to temperature changes, and where UV, water, chemical substances (acid, alkali, salt water) are infiltrated Deterioration is severe and the coating film is easily peeled off.
このため、表面強度や収縮・膨張にも優れた耐水性、耐薬品性の向上を目的とした塗材で、耐久性の高い状態を維持することができ、一液性で乾燥硬化する塗材の実現が望まれていた。 For this reason, it is a coating material aiming to improve water resistance and chemical resistance with excellent surface strength and shrinkage / expansion, and it can maintain a highly durable state, and it is a one-component, dry-curing coating material. Realization of was desired.
この発明は、ゴム系リサイクルカーボンとウレタンプレポリマー樹脂を主成分とする溶剤の混合物で硬い塗膜を形成した一液性硬化型の耐水性、耐薬品性に優れた塗材を提供するものである。 This invention provides a coating material excellent in water resistance and chemical resistance of a one-part curable type in which a hard coating film is formed with a mixture of a solvent mainly composed of rubber-based recycled carbon and a urethane prepolymer resin. is there.
この塗材は、ウレタンプレポリマー樹脂を主成分とする溶剤１００重量％に対してゴム系リサイクルカーボンの割合が１０〜２５重量％を混合した耐水性、耐薬品性効果と付着性、防錆効果を特長とする塗材である。 This coating material is a water- and chemical-resistant effect and adhesion, and a rust-preventing effect in which the ratio of rubber-based recycled carbon is 10 to 25% by weight with respect to 100% by weight of the solvent mainly composed of urethane prepolymer resin. It is a coating material that features
上述したように、本発明の塗材は、一液性の硬化型で、硬い塗膜を形成し付着性が高く剥離が生じにくい。また、耐水性、耐薬品性に優れていることから、腐食を生じる箇所に塗布することにより、酸化を抑制さす塗材が提供される。 As described above, the coating material of the present invention is a one-component curable type, forms a hard coating film, has high adhesion, and does not easily peel off. Moreover, since it is excellent in water resistance and chemical resistance, the coating material which suppresses oxidation is provided by apply | coating to the location which produces corrosion.
ゴム系リサイクルカーボンは、これまでリサイクルが難しかった廃タイヤを非燃焼乾留熱分解して生成したカーボンブラックを微粉砕しフィルターを通したカーボンで真比重１．６、かさ比重０．６でウレタンプレポリマー樹脂を主成分とする溶剤に混入しても凝固することなく混合する。これは、ゴム系リサイクルカーボンは、被膜がないため溶剤となじみやすく分子レベルで変化しやすいことが考えられる。 Rubber-based recycled carbon is a carbon black produced by non-combustion dry distillation pyrolysis of waste tires, which has been difficult to recycle until now. Even if it mixes with the solvent which has a polymer resin as a main component, it mixes without solidifying. This is presumably because rubber-based recycled carbon has no coating and is easily compatible with the solvent and easily changes at the molecular level.
前記カーボンは、粒子径が３０μｍ以下のものが好ましい。粒子径が３０μｍを超えると粒子径のばらつきや膨張が大きくなり粘度が上昇し付着力が低下することが懸念される
。混合の割合は、前記のとおりウレタンプレポリマー樹脂溶剤１００重量％に対して１０〜２５重量％である。２５重量％を超えると付着性や塗布作業性が悪くなる。該カーボンの分析結果は表１の通りである。
The carbon preferably has a particle size of 30 μm or less. If the particle diameter exceeds 30 μm, there is a concern that the dispersion and expansion of the particle diameter increase, the viscosity increases, and the adhesive force decreases. As described above, the mixing ratio is 10 to 25% by weight with respect to 100% by weight of the urethane prepolymer resin solvent. If it exceeds 25% by weight, the adhesion and coating workability will deteriorate. The analysis results of the carbon are shown in Table 1.
この耐水性、耐薬品性塗材の塗装作業は、一液性の硬化型塗材であり、金属などの下地処理を行い用途に応じて塗布できる。塗布に先立って塗装面の汚れを拭き取り、火気厳禁、静電気などに注意し、保護手袋などの着用するよう注意を払うことが必要である。 This water-resistant and chemical-resistant coating material is a one-component curable coating material, which can be applied according to the purpose by performing a base treatment of metal or the like. Prior to application, it is necessary to wipe off the dirt on the painted surface, be careful of fire bans, static electricity, and wear protective gloves.
本発明の塗材は、温度変化による膨張・収縮性効果と付着性、防錆作用に優れることから、より耐久性を維持することができる。一液性であり乾燥時間も速く、指触乾燥時間は約３０分で十分で、硬化乾燥は約４〜５時間である。塗布方法は、刷毛塗り、ローラー塗り、スプレー塗りなど用途に応じた方法で塗布できる。 Since the coating material of the present invention is excellent in expansion / contraction effect due to temperature change, adhesion, and rust prevention action, durability can be further maintained. It is a one-component type and has a fast drying time. A touch drying time of about 30 minutes is sufficient, and a curing and drying time is about 4 to 5 hours. The application method can be applied by a method according to the application such as brush coating, roller coating or spray coating.
本発明の実施例は、ウレタンプレポリマー樹脂を主成分とする溶剤の１００重量％に対して該カーボンを１５重量％の混合物とした塗材である。効果は、表１に示す試験結果のとおり、耐水性、耐薬品性に優れた硬い塗膜を形成する要因に、ゴム系リサイクルカーボンは被膜がないため、粒子が微妙に膨張してウレタンプレポリマー樹脂と結合して強固に固まる性質を持っていることが効果を高めている。 An example of the present invention is a coating material in which the carbon is a mixture of 15% by weight with respect to 100% by weight of a solvent mainly composed of a urethane prepolymer resin. As shown in the test results shown in Table 1, the effect of forming a hard coating film with excellent water resistance and chemical resistance is due to the fact that the rubber-based recycled carbon does not have a coating, so the particles are slightly expanded and the urethane prepolymer The effect is enhanced by the fact that it has the property of solidifying by being bonded to the resin.
実施例に示すようにこの発明の塗材は、ウレタンプレポリマー樹脂を主成分にしたことによる耐水性・耐薬品性による効果と、ゴム系リサイクルカーボンの特長である温度変化による膨張・収縮性効果と紫外線および防錆作用効果が考えられる。 As shown in the examples, the coating material of the present invention has the effect of water resistance and chemical resistance due to the main component of urethane prepolymer resin, and the effect of expansion and contraction due to temperature change, which is a feature of rubber-based recycled carbon. And UV and rust preventive effects are considered.
エコリサイクルカーボンの分析結果を表１に示した。 The analysis results of eco-recycled carbon are shown in Table 1.
実施例による試験結果を表２示した。 The test results according to the examples are shown in Table 2.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008089900A JP2009242534A (en) | 2008-03-31 | 2008-03-31 | Coating material having excellent water resistance and chemical resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008089900A JP2009242534A (en) | 2008-03-31 | 2008-03-31 | Coating material having excellent water resistance and chemical resistance |
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| Publication Number | Publication Date |
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| JP2009242534A true JP2009242534A (en) | 2009-10-22 |
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| JP2008089900A Pending JP2009242534A (en) | 2008-03-31 | 2008-03-31 | Coating material having excellent water resistance and chemical resistance |
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