JP2019199493A - Dust splash prevention agent, and dust splash prevention method using the same - Google Patents
Dust splash prevention agent, and dust splash prevention method using the same Download PDFInfo
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Abstract
Description
本発明は、粉塵飛散防止剤に関し、特にアスベスト等の無機繊維含有材料の飛散防止剤として好適な粉塵飛散防止剤、及びこれを用いた粉塵飛散防止方法に関する。 The present invention relates to a dust scattering preventing agent, and more particularly to a dust scattering preventing agent suitable as a scattering preventing agent for inorganic fiber-containing materials such as asbestos, and a dust scattering preventing method using the same.
建造物の改修や解体、廃棄物の収集、運搬、処分等の処理の際は、粉塵の飛散防止が義務付けられている。住宅用断熱材、吸音材、耐火被覆材等には、耐熱性、耐薬品性、絶縁性などに優れた無機繊維を含有する材料が用いられており、中でも、アスベストが使用されている建造物や廃棄物の処理の際は、アスベストの暴露防止および飛散防止処理を実施することが義務付けられ、安全な処理方法が求められている。 It is obliged to prevent dust from being scattered during the renovation and demolition of buildings, the collection, transportation and disposal of waste. Materials containing inorganic fibers with excellent heat resistance, chemical resistance, insulation, etc. are used for heat insulating materials, sound absorbing materials, fireproof coating materials, etc., and buildings that use asbestos. When processing waste and waste, it is obliged to carry out asbestos exposure prevention and scattering prevention treatment, and a safe treatment method is required.
粉塵の飛散防止方法には、粉塵の湿潤化や表面固化の処置がとられている。湿潤化には、従来、水および界面活性剤と高分子の組合せからなる湿潤化薬剤が使用されている。表面固化には、酢酸ビニル系の樹脂エマルジョンを廃棄物に吹き付け、その表面を固化させる方法がとられている。建造物や廃棄物がアスベストを含む場合には、これらの薬剤を建造物や廃棄物に吹付けたり、浸透させた後、湿潤状態のアスベストを剥離する作業が行われる。 As a method for preventing dust scattering, measures are taken to wet the surface of the dust and to solidify the surface. Conventionally, wetting agents comprising a combination of water and a surfactant and a polymer are used for wetting. For surface solidification, a method is adopted in which a vinyl acetate resin emulsion is sprayed onto waste to solidify the surface. When a building or waste contains asbestos, after spraying or infiltrating these chemicals onto the building or waste, an operation of peeling wet asbestos is performed.
例えば、特許文献１にはアクリル樹脂等の合成樹脂及び水を主成分とする組成物で内部浸透処理を行い、次に表面固化処理剤で石綿含有物の表面固化処理を行うことが開示されている。
また、特許文献２には保水剤と増粘剤を含む薬剤をアスベストに塗布し、深く浸透させる粉塵飛散防止方法が開示されている。
For example, Patent Document 1 discloses that an internal penetration treatment is performed with a composition mainly composed of a synthetic resin such as an acrylic resin and water, and then an asbestos-containing material is solidified with a surface solidification treatment agent. Yes.
Patent Document 2 discloses a dust scattering prevention method in which a drug containing a water retention agent and a thickening agent is applied to asbestos and deeply penetrated.
しかしながら、湿潤化薬剤を処理対象物に十分に湿潤させるには、繰り返しの塗布が必要であったり、経時と共に乾燥が進み、解体や運搬の際に発生する粉塵の飛散を防止する目的を充分に達成することができなかった。また、処理対象物が、スレート、サイディング、セメント板等の成形板の場合、湿潤化処理では湿潤化薬剤が内部に浸透せず、粉塵飛散防止効果の重要なファクターである浸透力や保湿効果を発揮することができない。また、従来の表面固化処理では表面固化薬剤が処理対象物の表面より流れ落ちやすく、十分に表面を覆うことができる処理剤が求められていた。 However, in order to sufficiently moisten the wetting agent on the object to be treated, it is necessary to repeatedly apply it, or the drying proceeds with time, and the purpose of preventing the scattering of dust generated at the time of dismantling and transportation is sufficient. Could not be achieved. In addition, when the object to be treated is a molded plate such as a slate, siding, or cement plate, the wetting agent does not penetrate into the interior in the wetting treatment, and the penetrating power and moisturizing effect, which are important factors for preventing dust scattering, are achieved. I can't demonstrate it. Further, in the conventional surface solidification treatment, there has been a demand for a treatment agent that can easily cover the surface because the surface solidification agent easily flows down from the surface of the object to be treated.
本発明の目的は、上記の課題を解決した粉塵飛散防止剤、すなわち、処理対象物の表面を持続的かつ確実に被覆することができる粉塵飛散防止剤を提供することにある。 An object of the present invention is to provide a dust scattering preventing agent that solves the above-described problems, that is, a dust scattering preventing agent that can continuously and reliably coat the surface of an object to be treated.
本発明者らは上記課題に対して鋭意研究を行なった結果、粉塵飛散防止剤に起泡剤を添加して泡を発生させ、処理対象物に適用した際に流れ落ちるのを防止し、処理対象物の表面を持続的かつ確実に被覆することができる粉塵飛散防止剤を提供し得ることを見出し、本発明を完成させた。 As a result of diligent research on the above problems, the present inventors have added a foaming agent to the dust scattering preventive agent to generate foam, and prevent it from flowing down when applied to an object to be treated. The present inventors have found that a dust scattering preventing agent capable of continuously and reliably coating the surface of an object can be provided, and the present invention has been completed.
すなわち本発明は、下記の構成であり、これにより本発明の上記課題が解決される。 That is, the present invention has the following configuration, which solves the above-described problems of the present invention.
〔１〕
合成樹脂と、起泡剤と、水とを含む粉塵飛散防止剤であって、
該合成樹脂がアクリル樹脂、変性アクリル樹脂、ポリビニルアルコール樹脂、酢酸ビニル−アクリル酸エステル共重合体、及びスチレン−アクリル酸エステル共重合体からなる群より選択される少なくとも１種を含み、
該合成樹脂の含有量が該粉塵飛散防止剤の全量を基準として３〜２０質量％であり、
該起泡剤の含有量が該粉塵飛散防止剤の全量を基準として２〜３０質量％である粉塵飛散防止剤。
〔２〕
前記起泡剤が、アニオン界面活性剤、カチオン界面活性剤、両面界面活性剤、非イオン界面活性剤、反応性界面活性剤、及び高分子界面活性剤からなる群より選択される少なくとも１種を含む〔１〕に記載の粉塵飛散防止剤。
〔３〕
前記起泡剤は、密度が０．６〜１．４ｇ／ｃｍ３であり、ｐＨが５〜１０である〔１〕又は〔２〕に記載の粉塵飛散防止剤。
〔４〕
前記粉塵飛散防止剤が、更に、無機金属水酸化物、有機リン系、無機リン系、及びアンチモン系からなる群より選択される難燃剤を含み、該難燃剤の含有量が粉塵飛散防止剤の全量を基準として１〜５質量％である〔１〕〜〔３〕のいずれか１項に記載の粉塵飛散防止剤。
〔５〕
無機繊維含有材料を、〔１〕〜〔４〕のいずれか１項に記載の粉塵飛散防止剤で被覆した後、処理を行う粉塵飛散防止方法。
〔６〕
前記無機繊維含有材料を被覆した粉塵飛散防止剤が硬化した後、該無機繊維含有材料を除去する〔５〕に記載の粉塵飛散防止方法。
〔７〕
前記無機繊維含有材料が、アスベスト含有成形板である〔５〕又は〔６〕に記載の粉塵飛散防止方法。
[1]
A dust scattering preventive agent containing a synthetic resin, a foaming agent, and water,
The synthetic resin includes at least one selected from the group consisting of acrylic resins, modified acrylic resins, polyvinyl alcohol resins, vinyl acetate-acrylate copolymers, and styrene-acrylate copolymers,
The content of the synthetic resin is 3 to 20% by mass based on the total amount of the dust scattering inhibitor,
The dust scattering inhibitor whose content of this foaming agent is 2-30 mass% on the basis of the whole quantity of this dust scattering inhibitor.
[2]
The foaming agent is at least one selected from the group consisting of an anionic surfactant, a cationic surfactant, a double-sided surfactant, a nonionic surfactant, a reactive surfactant, and a polymer surfactant. The dust scattering inhibitor according to [1].
[3]
The foaming agent is a dust scattering inhibitor according to [1] or [2], which has a density of 0.6 to 1.4 g / cm 3 and a pH of 5 to 10.
[4]
The dust scattering inhibitor further comprises a flame retardant selected from the group consisting of inorganic metal hydroxides, organic phosphorus, inorganic phosphorus, and antimony, and the content of the flame retardant is the dust scattering inhibitor. The dust scattering preventing agent according to any one of [1] to [3], which is 1 to 5% by mass based on the total amount.
[5]
A method for preventing dust scattering, wherein the inorganic fiber-containing material is coated with the dust scattering inhibitor according to any one of [1] to [4] and then treated.
[6]
The method for preventing dust scattering according to [5], wherein after the dust scattering inhibitor coated with the inorganic fiber-containing material is cured, the inorganic fiber-containing material is removed.
[7]
The dust scattering prevention method according to [5] or [6], wherein the inorganic fiber-containing material is an asbestos-containing molded plate.
本発明は、処理対象物を持続的かつ確実に被覆することができる粉塵飛散防止剤を提供できる。
従って、本発明の粉塵飛散防止剤及びそれを用いた粉塵飛散防止方法によれば、粉塵飛散防止剤を処理対象物に適用した場合に流れ落ちることなく表面で硬化し、持続的かつ確実に被覆した状態を保持して、良好な粉塵防止効果を示す。
ADVANTAGE OF THE INVENTION This invention can provide the dust scattering prevention agent which can coat | cover a process target object continuously and reliably.
Therefore, according to the dust scattering preventing agent and the dust scattering preventing method using the same according to the present invention, the dust scattering preventing agent is cured on the surface without being dropped when applied to the object to be treated, and is continuously and reliably coated. Maintains the state and shows a good dust prevention effect.
＜粉塵飛散防止剤＞
本発明の粉塵飛散防止剤は、合成樹脂と、起泡剤と、水とを含む粉塵飛散防止剤であって、
該合成樹脂がアクリル樹脂、変性アクリル樹脂、ポリビニルアルコール樹脂、酢酸ビニル−アクリル酸エステル共重合体、及びスチレン−アクリル酸エステル共重合体からなる群より選択される少なくとも１種を含み、
該合成樹脂の含有量が該粉塵飛散防止剤の全量を基準として３〜２０質量％であり、
該起泡剤の含有量が該粉塵飛散防止剤の全量を基準として２〜３０質量％である。
本発明の該粉塵飛散防止剤は、所望によりその他の成分を含み得る。
<Dust scattering prevention agent>
The dust scattering preventing agent of the present invention is a dust scattering preventing agent comprising a synthetic resin, a foaming agent, and water,
The synthetic resin includes at least one selected from the group consisting of acrylic resins, modified acrylic resins, polyvinyl alcohol resins, vinyl acetate-acrylate copolymers, and styrene-acrylate copolymers,
The content of the synthetic resin is 3 to 20% by mass based on the total amount of the dust scattering inhibitor,
Content of this foaming agent is 2-30 mass% on the basis of the whole quantity of this dust scattering inhibitor.
The dust scattering inhibitor of the present invention may contain other components as desired.
[起泡剤]
本発明の粉塵飛散防止剤に用いる起泡剤としては、アニオン界面活性剤、カチオン界面活性剤、両面界面活性剤、非イオン界面活性剤、反応性界面活性剤、及び高分子界面活性剤が挙げられ、市販のものを用いても良い。市販の起泡剤としては、界面活性剤としてイソブチルグリコール、高級アルコール、界面活性剤配合物を含む第一工業製薬社製アクアタフＨＤ（登録商標）が好ましい。
起泡剤は、密度が０．６〜１．４ｇ／ｃｍ３であり、ｐＨが５〜１０であることがより好ましい。
起泡剤の含有量が該粉塵飛散防止剤の全量を基準として２〜３０質量％であり、好ましくは３〜２０質量％、より好ましくは５〜１５質量％、さらに好ましくは７〜１２質量％や８〜１２質量％である。なお、これらの数値範囲の各上限下限を組み合せることもでき、例えば、５〜１２質量％、７〜２０質量％などの範囲をとることもできる（異なる数値範囲の各上限下限の組み合せについては、以下同様である。）。また、本願における起泡剤の含有量は、界面活性剤の含有量を意味するものとする。
起泡剤の含有量を上記の範囲とすることで、気泡を十分に発生させることができ、処理対象物の表面で硬化し、適用後数日が経過しても気泡が消失せずに処理対象物の表面を持続的に被覆することができる。
[Foaming agent]
Examples of the foaming agent used in the dust scattering preventing agent of the present invention include anionic surfactants, cationic surfactants, double-sided surfactants, nonionic surfactants, reactive surfactants, and polymer surfactants. A commercially available product may be used. As a commercially available foaming agent, AquaTough HD (registered trademark) manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd., which contains isobutyl glycol, a higher alcohol, and a surfactant blend as a surfactant, is preferable.
More preferably, the foaming agent has a density of 0.6 to 1.4 g / cm 3 and a pH of 5 to 10.
The content of the foaming agent is 2 to 30% by mass, preferably 3 to 20% by mass, more preferably 5 to 15% by mass, and even more preferably 7 to 12% by mass based on the total amount of the dust scattering inhibitor. It is 8-12 mass%. In addition, each upper / lower limit of these numerical ranges can also be combined, for example, it can take ranges, such as 5-12 mass%, 7-20 mass% (About the combination of each upper / lower limit of a different numerical range) The same applies hereinafter.) Moreover, content of the foaming agent in this application shall mean content of surfactant.
By setting the content of the foaming agent in the above range, bubbles can be sufficiently generated, cured on the surface of the object to be processed, and the bubbles are not lost even after several days after application. The surface of the object can be continuously coated.
[合成樹脂]
本発明の粉塵飛散防止剤に用いる合成樹脂は、アクリル樹脂、変性アクリル樹脂、ポリビニルアルコール樹脂、酢酸ビニル−アクリル酸エステル共重合体、及びスチレン−アクリル酸エステル共重合体からなる群より選択される少なくとも１種である。上記より選択される合成樹脂を含有することにより、処理対象物の表面に密着性が高い硬化層を形成することができる。
合成樹脂としては、ポリビニルアルコール樹脂、アクリル樹脂またはスチレン−アクリル酸エステル共重合体を用いるのが好ましい。
合成樹脂の含有量は、粉塵飛散防止剤の全量を基準として、３〜２０質量％であり、好ましくは５〜１５質量％、より好ましくは５〜１０質量％である。上記の範囲であれば、粉塵飛散防止剤を処理対象物に適用した後、短時間で硬化が可能となり、発泡を妨げず、処理対象物の表面より流れ落ちることを防止できる。
[Synthetic resin]
The synthetic resin used for the dust scattering preventing agent of the present invention is selected from the group consisting of acrylic resin, modified acrylic resin, polyvinyl alcohol resin, vinyl acetate-acrylate copolymer, and styrene-acrylate copolymer. At least one. By containing the synthetic resin selected from the above, a hardened layer having high adhesion can be formed on the surface of the object to be processed.
As the synthetic resin, it is preferable to use a polyvinyl alcohol resin, an acrylic resin, or a styrene-acrylic acid ester copolymer.
The content of the synthetic resin is 3 to 20% by mass, preferably 5 to 15% by mass, more preferably 5 to 10% by mass, based on the total amount of the dust scattering inhibitor. If it is said range, after applying a dust scattering prevention agent to a process target object, hardening will be attained in a short time, and it can prevent flowing down from the surface of a process target object, without preventing foaming.
[難燃剤]
本発明の粉塵飛散防止剤は、難燃剤を含有しなくともよいが、難燃剤を含有して構成することもできる。
この場合、粉塵飛散防止剤は、無機金属水酸化物、有機リン系、無機リン系、アンチモン系より選択される難燃剤を含むことが好ましく、無機質難燃剤を含むことがより好ましい。粉塵飛散防止剤が難燃剤を含むことにより、処理対象物の表面に防火性を備えた硬化層を形成することができる。
これらの難燃剤は１種を単独で用いても、２種以上を併用してもよく、無機質難燃剤として水酸化アルミニウムと水酸化マグネシウムとを併用することがより好ましい。水酸化アルミニウムと水酸化マグネシウムとを併用することにより防火性能が向上する。
[Flame retardants]
The dust scattering preventing agent of the present invention may not contain a flame retardant, but can also be constituted by containing a flame retardant.
In this case, the dust scattering inhibitor preferably contains a flame retardant selected from inorganic metal hydroxides, organic phosphorus, inorganic phosphorus, and antimony, and more preferably contains an inorganic flame retardant. When the dust scattering preventing agent contains a flame retardant, a cured layer having fire resistance can be formed on the surface of the object to be treated.
These flame retardants may be used individually by 1 type, or may use 2 or more types together, It is more preferable to use together aluminum hydroxide and magnesium hydroxide as an inorganic flame retardant. Fireproof performance is improved by using aluminum hydroxide and magnesium hydroxide in combination.
これらの金属水酸化物は、加熱されると脱水分解し、その際の吸熱により温度の上昇を抑制する効果を有しており、水酸化アルミニウムは、脱水温度が約３００°Ｃ、水酸化マグネシウムは、脱水温度が約３８０°Ｃである。そのため、両者を併用した場合には脱水分解が２段階で進行し、合成樹脂が燃焼しはじめる３００〜４００°Ｃの間の温度上昇の抑制効果が長続きし、より確実なものとなる。この結果、防火性能が向上するものと考えられる。
粉塵飛散防止剤は、上記より選択される難燃剤を含むことができる。この場合、難燃剤の含有量は、粉塵飛散防止剤の全量を基準として０．５〜１０質量％であり、好ましくは１〜８質量％であり、より好ましくは１〜５質量％とすることができる。
These metal hydroxides are dehydrated and decomposed when heated, and have the effect of suppressing the temperature rise due to the endotherm at that time. Aluminum hydroxide has a dehydration temperature of about 300 ° C., magnesium hydroxide. Has a dehydration temperature of about 380 ° C. Therefore, when both are used in combination, dehydration decomposition proceeds in two stages, and the effect of suppressing the temperature rise between 300-400 ° C. at which the synthetic resin begins to burn continues for a long time and becomes more reliable. As a result, it is considered that the fire prevention performance is improved.
The dust scattering preventing agent can include a flame retardant selected from the above. In this case, the content of the flame retardant is 0.5 to 10% by mass, preferably 1 to 8% by mass, more preferably 1 to 5% by mass based on the total amount of the dust scattering inhibitor. Can do.
［その他成分］
さらに本発明の粉塵飛散防止剤には、各種添加剤、例えばコロイダルシリカ等の無機微粒子、炭酸カルシウム、ケイ砂、硫酸バリウム、クレー、カオリン、タルク、ベントナイト、珪藻土、パーライト、シラスバルーン、ヒル石粉末、ガラスビーズ、酸化チタン、無機質繊維（耐アルカリ性ガラス繊維）等の無機充填剤、メチルセルロース等の硬化剤、安定剤、増粘剤などを適宜配合させてもよい。
これらの任意成分の配合量は、通常、粉塵飛散防止剤全成分の総質量に対して２０質量％以下であり、好ましくは１０質量％以下、より好ましくは５質量％以下であるように構成することができる。
合成樹脂、難燃剤、及びその他成分を含有する組成物として、例えば、株式会社テクネット製アステクターＳ等の市販品が挙げられる。当該アステクターＳは、合成樹脂としてポリビニルアルコールを含有する。
[Other ingredients]
Furthermore, the dust scattering preventive agent of the present invention includes various additives such as inorganic fine particles such as colloidal silica, calcium carbonate, silica sand, barium sulfate, clay, kaolin, talc, bentonite, diatomaceous earth, perlite, shirasu balloon, leechite powder. Inorganic fillers such as glass beads, titanium oxide and inorganic fibers (alkali-resistant glass fibers), curing agents such as methylcellulose, stabilizers, thickeners, and the like may be appropriately blended.
The amount of these optional components is usually 20% by mass or less, preferably 10% by mass or less, more preferably 5% by mass or less, based on the total mass of all the dust scattering preventing components. be able to.
As a composition containing a synthetic resin, a flame retardant, and other components, for example, commercially available products such as TECHNET ASTERA S can be given. The Astector S contains polyvinyl alcohol as a synthetic resin.
[粉塵飛散防止方法]
本発明は粉塵飛散防止方法にも関する。本発明の粉塵飛散防止方法は、無機繊維含有材料を、本発明の粉塵飛散防止剤で被覆した後、処理を行う方法である。
被覆は、ローラー、刷毛、コテ等による塗布や、エアーレススプレーガン、エアスプレー等による吹付により行うことができる。なお、粉塵飛散防止剤を対象物に塗布する場合、塗布量は、対象物を長時間（少なくとも２時間以上、５時間以上、１０時間以上又は１６時間以上）に亘って被覆した状態を保ちつつ液だれも抑制するという観点で、３５０〜４００ｇ／ｍ２とすることができる。
無機繊維含有材料を、本発明の粉塵飛散防止剤で被覆した後に行う処理としては、改修や解体、除去（撤去）、収集、運搬、処分等が挙げられる。
上記処理は本発明の粉塵飛散防止剤が硬化する前に行ってもよいが、硬化後に行うことがより好ましい。
無機繊維含有材料を被覆した粉塵飛散防止剤が硬化した後、該無機繊維含有材料を処理することがより好ましい。
[Dust scattering prevention method]
The present invention also relates to a dust scattering prevention method. The dust scattering prevention method of the present invention is a method of performing treatment after coating an inorganic fiber-containing material with the dust scattering inhibitor of the present invention.
The coating can be performed by application with a roller, a brush, a trowel, or the like, or spraying with an airless spray gun, air spray or the like. In addition, when apply | coating a dust scattering prevention agent to a target object, application | coating amount is maintaining the state which coat | covered the target object for a long time (at least 2 hours or more, 5 hours or more, 10 hours or more, or 16 hours or more). From the viewpoint of suppressing dripping, it can be 350 to 400 g / m 2 .
Examples of the treatment performed after the inorganic fiber-containing material is coated with the dust scattering inhibitor of the present invention include repair, dismantling, removal (removal), collection, transportation, disposal, and the like.
Although the said process may be performed before the dust scattering prevention agent of this invention hardens | cures, it is more preferable to carry out after hardening.
It is more preferable to treat the inorganic fiber-containing material after the dust scattering inhibitor coated with the inorganic fiber-containing material is cured.
[無機繊維含有材料]
本発明の粉塵飛散防止方法にかかる無機繊維含有材料とは、無機繊維を含有する材料であれば特に制限はないが、チタン酸カリウム繊維やアルミナ繊維等のセラミック繊維、生体溶解性無機繊維、ガラス繊維、カーボン繊維、アスベスト、ロックウール等の無機繊維を含有する成形板等が挙げられる。
[Inorganic fiber-containing material]
The inorganic fiber-containing material according to the dust scattering prevention method of the present invention is not particularly limited as long as it is a material containing inorganic fibers, but ceramic fibers such as potassium titanate fibers and alumina fibers, biosoluble inorganic fibers, glass Examples thereof include molded plates containing inorganic fibers such as fibers, carbon fibers, asbestos and rock wool.
[成形板]
成形板としては、スレート、サイディング、セメント板等が挙げられる。成形板は、液体が浸透しにくい。また、表面に塗布又は吹き付けた液体が流れやすく被覆するのが困難であるが、本発明の粉塵飛散防止剤及びそれを用いた粉塵飛散防止方法によれば、特定の量を配合した起泡剤の作用により持続的に被覆できる。
無機繊維含有材料が、アスベスト含有成形板の場合、アスベスト含有成形板の断面等にアスベストが露出していた場合であっても、アスベストと、本発明の粉塵飛散防止剤の含有成分とのなじみが良いため、アスベスト含有成形板の表面を粉塵飛散防止剤が十分に被覆し、硬化することにより、粉塵の飛散を防止することができる。
[Molded plate]
Examples of the molded plate include slate, siding, and cement plate. The molded plate is difficult for liquid to penetrate. Further, the liquid applied or sprayed on the surface is easy to flow and difficult to cover, but according to the dust scattering preventing agent and the dust scattering preventing method using the same of the present invention, a foaming agent containing a specific amount It can be continuously coated by the action of.
In the case where the inorganic fiber-containing material is an asbestos-containing molded plate, even if the asbestos is exposed on the cross section of the asbestos-containing molded plate, the familiarity between the asbestos and the components contained in the dust scattering inhibitor of the present invention For this reason, dust scattering can be prevented by sufficiently covering and curing the surface of the asbestos-containing molded plate with a dust scattering inhibitor.
以下に実施例を挙げて、本発明をさらに詳しく説明するが、本発明はこれら実施例に限定されるものではない。 EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to these examples.
[実施例１]
アステクターＳ（株式会社テクネット社製）１００ｇ（本製品は水７５質量％、合成樹脂２０質量％を含有し、本製品１００ｇ中、水７５ｇ、合成樹脂２０ｇ、その他５ｇを含有する）、アクアタフＨＤ（第一工業製薬社製）５ｇ（本製品は水５０質量％、界面活性剤５０質量％を含有し、本製品５ｇ中、水２．５ｇ、界面活性剤２．５ｇを含有する）からなる粉塵飛散防止剤を調製した。このとき、合成樹脂の含有量は、粉塵飛散防止剤の全量を基準として１９．０質量％であり、起泡剤の含有量は、粉塵飛散防止剤の全量を基準として２．４質量％であった。
アクアタフＨＤの２０℃における密度は１ｇ／ｃｍ３であり、ｐＨは７．５であった。
高さ２５ｃｍ、幅１８ｃｍ、厚さ５ｍｍの波型のスレートを高さ方向（波の山）が垂直となるように置き、塗布量が３８７ｇ／ｍ2 となるように実施例１の粉塵飛散防止剤をエアーレススプレーガンを用いて吹付けて塗布し、その後乾燥させた。
[Example 1]
Astector S (manufactured by Technet Co., Ltd.) 100 g (this product contains 75% by weight of water and 20% by weight of synthetic resin, and in 100g of this product contains 75g of water, 20g of synthetic resin and other 5g), Aqua Tough HD (Daiichi Kogyo Seiyaku Co., Ltd.) 5g (this product contains 50% by weight of water and 50% by weight of surfactant, and 2.5g of water and 2.5g of surfactant in 5g of this product) A dust scattering inhibitor was prepared. At this time, the content of the synthetic resin is 19.0% by mass based on the total amount of the dust scattering inhibitor, and the content of the foaming agent is 2.4% by mass based on the total amount of the dust scattering inhibitor. there were.
Aqua tough HD had a density at 20 ° C. of 1 g / cm 3 and a pH of 7.5.
A dust slate of Example 1 is prevented so that a corrugated slate having a height of 25 cm, a width of 18 cm, and a thickness of 5 mm is placed so that the height direction (wave crest) is vertical and the coating amount is 387 g / m 2. The agent was sprayed using an airless spray gun and then dried.
[実施例２、３]
アクアタフＨＤを１０ｇ（水５０質量％、界面活性剤５０質量％）、２０ｇ（水５０質量％、界面活性剤５０質量％）に変更した以外は実施例１と同様にして、それぞれ実施例２、３の粉塵飛散防止剤を調製し、スレートに塗布し、その後乾燥させた。
[Examples 2 and 3]
Except for changing AquaTough HD to 10 g (50% by mass of water, 50% by mass of surfactant) and 20 g (50% by mass of water, 50% by mass of surfactant), No. 3 dust scattering inhibitor was prepared, applied to a slate, and then dried.
[比較例１]
アクアタフＨＤは使用せず、アステクターＳを１００ｇ使用した以外は実施例１と同様にして比較例１の粉塵飛散防止剤を調製し、スレートに塗布し、その後乾燥させた。
[Comparative Example 1]
The dust scattering prevention agent of Comparative Example 1 was prepared in the same manner as in Example 1 except that 100 g of Astector S was used without using AquaTough HD, and applied to the slate, followed by drying.
[被覆持続性]
実施例１〜３、及び比較例１の粉塵飛散防止剤の、スレートに対する被覆持続性を評価した。
塗布直後、２時間後、１６時間後の上記スレートに対する被覆の状態を目視で判断して、スレートの表面のうち粉塵飛散防止剤を塗布した領域において、泡が全体を被覆しており液だれしないものをＡ、泡が一部被覆しているがやや液だれするものをＢ、泡として付着せず液だれするものをＣとした。
評価の結果を表１に示す。
[Coating durability]
The coating durability with respect to the slate of the dust scattering inhibitors of Examples 1 to 3 and Comparative Example 1 was evaluated.
Immediately after application, the state of the coating on the slate after 2 hours and 16 hours is visually judged, and in the area where the dust scattering inhibitor is applied on the surface of the slate, the foam covers the whole and does not spill. The sample was A, the foam was partially covered but slightly dripping, B, and the dripping liquid without adhering as foam.
The evaluation results are shown in Table 1.
以上説明したように、本発明に係る粉塵飛散防止剤及び粉塵飛散防止方法によれば、処理対象物の表面で、持続的に被覆して硬化層を形成し、粉塵の飛散防止処理として好適なものである。 As described above, according to the dust scattering preventing agent and the dust scattering preventing method according to the present invention, the surface of the object to be processed is continuously covered to form a hardened layer, which is suitable as a dust scattering preventing process. Is.
Claims (7)
該合成樹脂がアクリル樹脂、変性アクリル樹脂、ポリビニルアルコール樹脂、酢酸ビニル−アクリル酸エステル共重合体、及びスチレン−アクリル酸エステル共重合体からなる群より選択される少なくとも１種を含み、
該合成樹脂の含有量が該粉塵飛散防止剤の全量を基準として３〜２０質量％であり、
該起泡剤の含有量が該粉塵飛散防止剤の全量を基準として２〜３０質量％である粉塵飛散防止剤。 A dust scattering preventive agent containing a synthetic resin, a foaming agent, and water,
The synthetic resin includes at least one selected from the group consisting of acrylic resins, modified acrylic resins, polyvinyl alcohol resins, vinyl acetate-acrylate copolymers, and styrene-acrylate copolymers,
The content of the synthetic resin is 3 to 20% by mass based on the total amount of the dust scattering inhibitor,
The dust scattering inhibitor whose content of this foaming agent is 2-30 mass% on the basis of the whole quantity of this dust scattering inhibitor.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP7498988B2 (en) | 2020-06-06 | 2024-06-13 | 株式会社ペイントサービス | Material foaming method |
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