JP2022191969A - Polysilazane-based surface modifier - Google Patents

Polysilazane-based surface modifier Download PDF

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JP2022191969A
JP2022191969A JP2021100527A JP2021100527A JP2022191969A JP 2022191969 A JP2022191969 A JP 2022191969A JP 2021100527 A JP2021100527 A JP 2021100527A JP 2021100527 A JP2021100527 A JP 2021100527A JP 2022191969 A JP2022191969 A JP 2022191969A
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polysilazane
surface modifier
coating
organopolysilazane
glass plate
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浩子 小泉
Hiroko Koizumi
亜也子 日置
Ayako Hioki
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Stability Co Ltd
Osaka Research Institute of Industrial Science and Technology
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Stability Co Ltd
Osaka Research Institute of Industrial Science and Technology
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Abstract

To provide a polysilazane-based surface modifier which does not require a high temperature treatment during coating while maintaining the characteristics of an inorganic polysilazane-based surface modifier having an effect of improving the scratch resistance of a product surface, and which is improved in antifouling properties and adhesion to a transparent glass plate, and to provide a method for coating the same.SOLUTION: There is provided a polysilazane-based surface modifier comprising perhydropolysilazane, organopolysilazane, tetraethoxysilane and a solvent, wherein the organopolysilazane contains compounds of the following three structural formulas as units thereof, and the blending ratio of the perhydropolysilazane and the organopolysilazane is 20:80 to 80:20.SELECTED DRAWING: None

Description

本発明は、ガラス製品、樹脂製品、金属製品の表面性能の改善するために用いられるポリシラザン系表面改質剤に関し、また、透明ガラス板などの表面に、この表面改質剤をコーティングする方法に関する。 The present invention relates to a polysilazane-based surface modifier used to improve the surface properties of glass products, resin products, and metal products, and also to a method for coating the surface of a transparent glass plate or the like with this surface modifier. .

ガラス製品、樹脂製品、金属製品などの表面に擦傷痕が発生することを防止するために、それらの表面に無機ポリシラザン系表面改質剤を薄く塗布して保護膜を形成する技術が利用されている。例えば、車体の表面や、スマホの表示画面に無機ポリシラザン系表面改質剤をコーティングすると、その表面に薄膜でありながら硬度の高いコーティング膜が形成されることによって、耐擦傷性が改善されるので、砂埃など不意に何か固い物質と擦れてしまった場合でも擦傷痕がつきにくくなる。 In order to prevent scratches on the surfaces of glass products, resin products, metal products, etc., a technology is used to form a protective film by thinly applying an inorganic polysilazane-based surface modifier to the surfaces of these products. there is For example, when the surface of a car body or the display screen of a smartphone is coated with an inorganic polysilazane-based surface modifier, a thin yet hard coating film is formed on the surface, improving scratch resistance. , even if it accidentally rubs against a hard substance such as dust, it will be less likely to leave scratches.

ポリシラザン系表面改質剤のポリシラザン系成分としては、無機ポリシラザン(パーヒドロポリシラザン、ペルヒドロポリシラザン)が主に使われているが、最近では、これに加えて有機ポリシラザン(オルガノポリシラザン)も併せて利用する技術も現れてきた。例えば特許文献1では、成膜にあたって特に高温で処理することなく、成形品を屈曲させても上記複合化層が表面剥離することがなく、さらに金属成形品の場合は、各成分がその表面の酸化膜との反応を起こすことにより表層部にも高い密着性が認められる、ポリアルキル化シラザン化合物とペルヒドロポリシラザンとを、これら2者の合計として1~40質量%の濃度で不活性有機溶剤中に溶解してなるコーティング液などの技術が開示されている。 Inorganic polysilazanes (perhydropolysilazane, perhydropolysilazane) are mainly used as polysilazane components of polysilazane surface modifiers, but recently, organic polysilazanes (organopolysilazanes) are also used in addition to these. The technology to do so has also emerged. For example, in Patent Document 1, the composite layer does not peel off from the surface even when the molded product is bent without performing a particularly high temperature treatment for film formation, and furthermore, in the case of a metal molded product, each component has a surface A polyalkylated silazane compound and a perhydropolysilazane, which are recognized to have high adhesion even on the surface layer by causing a reaction with the oxide film, are mixed in an inert organic solvent at a total concentration of 1 to 40% by mass. Techniques such as a coating liquid dissolved therein are disclosed.

また、美観保持の観点からは、コーティングの対象がガラス製など透明製品の場合、付着した汚れがより目立つので、高い防汚性の改善が求められている。このような透明製品の場合、撥水性だけ付与すると、汚れは付着しにくくはなるが、例えば流水洗浄した場合にはその処理効果を目視で確認しづらかった。 In addition, from the viewpoint of keeping the appearance, when the object of coating is a transparent product made of glass or the like, adhered stains are more conspicuous, so improvement of high antifouling property is required. In the case of such a transparent product, if only water repellency is imparted, it becomes difficult for stains to adhere, but for example, if the product is washed with running water, it is difficult to visually confirm the effect of the treatment.

加えて従来のポリシラザン系表面改質剤では、その効果は発揮できる期間は長くて3年程度であって、さらなる長期間効果が持続する表面改質剤が求められている。 In addition, conventional polysilazane-based surface modifiers exhibit their effects for about three years at the longest, and there is a demand for surface modifiers that can maintain their effects for a longer period of time.

特許第4767317号公報Japanese Patent No. 4767317

無機ポリシラザン系の表面改質剤をコーティングした表面の耐擦傷性は改善される。また特許文献1記載のコーティング液のコーティングでは、高温処理が不要で被コーティング製品が金属成形品の場合、その密着性は向上して表面剥離を起こしにくくなる。しかしながらこれらの表面処理では汚れが付着しにくくなる効果、すなわち防汚性の効果に関しては、若干向上されるもののその効果は十分ではなかった。加えて特にガラス製などの透明製品に対する表面処理では、目視によって確かに表面処理したという実感に乏しいものであった。
The scratch resistance of the surface coated with the inorganic polysilazane-based surface modifier is improved. Further, in the coating of the coating liquid described in Patent Document 1, high-temperature treatment is not required, and when the product to be coated is a metal molded product, the adhesion is improved and surface peeling is less likely to occur. However, with these surface treatments, the effect of making it difficult for stains to adhere, that is, the antifouling effect is slightly improved, but the effect is not sufficient. In addition, in the surface treatment of a transparent product such as a glass product in particular, it is difficult to feel that the surface has been treated by visual inspection.

上記事情に鑑みて、本発明では、製品表面の耐擦傷性の改善効果のある無機ポリシラザン系表面改質剤の特徴を維持しつつ、コーティングの際に高温処理が不要で、なおかつ高く防汚性を長期間発揮し、またその処理の効果を目視で実感できるポリシラザン系表面改質剤とそのコーティング方法を提供することを課題とする。 In view of the above circumstances, in the present invention, while maintaining the characteristics of the inorganic polysilazane-based surface modifier that has the effect of improving the scratch resistance of the product surface, high-temperature treatment is not required during coating, and high antifouling properties are provided. To provide a polysilazane-based surface modifier that exhibits the effect for a long period of time and allows the effect of the treatment to be visually felt, and a coating method therefor.

上記課題を解消するため、本発明のポリシラザン系表面改質剤では、パーヒドロポリシラザン、オルガノポリシラザン、テトラエトキシシランおよび溶媒を含むコーティング液であって、
前記オルガノポリシラザンとしては、下記〔化1〕、〔化2〕および〔化3〕の単位を少なくともそれぞれ1以上含むものであり、

Figure 2022191969000001

Figure 2022191969000002

Figure 2022191969000003

(ただし、式中のx,y,zはそれぞれ独立して自然数であり、〔化3〕のRはHまたはCH3であり、nは1~3の自然数であり、-(OCHとは当該修飾基が存在しないことを示す)
前記パーヒドロポリシラザンと前記オルガノポリシラザンとの配合割合が20:80~80:20であることを主要な特徴とする。 In order to solve the above problems, the polysilazane-based surface modifier of the present invention is a coating liquid containing perhydropolysilazane, organopolysilazane, tetraethoxysilane and a solvent,
The organopolysilazane contains at least one unit each of the following [Chemical 1], [Chemical 2] and [Chemical 3],
Figure 2022191969000001

Figure 2022191969000002

Figure 2022191969000003

(where x, y, and z in the formula are each independently a natural number, R in [Chemical Formula 3] is H or CH 3 , n is a natural number of 1 to 3, and -(OCH 3 ) 0 indicates that the modifying group does not exist)
The main feature is that the mixing ratio of the perhydropolysilazane and the organopolysilazane is 20:80 to 80:20.

本発明のポリシラザン系表面改質剤を使って、その表面にコーティング処理された製品は、その表面にポリシラザン処理膜が形成されることにより、表面の耐擦傷性が向上するだけなく、防汚性も向上する。このことは特にコーティングされた製品が透明の場合に、特に美観に優れる。さらに単に硬いだけでなく、耐衝撃性にも優れたポリシラザン処理膜とすることができる。 A product whose surface is coated with the polysilazane-based surface modifier of the present invention has not only improved scratch resistance but also antifouling properties due to the formation of a polysilazane-treated film on the surface. also improve. This is particularly aesthetically pleasing, especially when the coated product is transparent. Furthermore, a polysilazane-treated film that is not only hard but also excellent in impact resistance can be obtained.

本発明のポリシラザン系表面改質剤では、その成分としてパーヒドロポリシラザン(無機ポリシラザン)だけではなく、所定構造のオルガノポリシラザン(有機ポリシラザン)を所定量加えていることによって、例えばコーティング処理された製品を流水洗浄すると、表面に付着した水滴がスムーズに流れるという、いわば穏やかな撥水効果が発揮されるので、視覚的にもコーティング処理の効果を実感できるようになった。 In the polysilazane-based surface modifier of the present invention, not only perhydropolysilazane (inorganic polysilazane), but also a predetermined amount of organopolysilazane (organic polysilazane) having a predetermined structure is added as a component, so that, for example, coated products can be improved. When washed with running water, water droplets adhering to the surface flow smoothly, so to speak, a gentle water repellent effect is exhibited, so the effect of the coating treatment can be visually felt.

また本発明のポリシラザン系表面改質剤では、従来のポリシラザン系表面改質剤よりも処理された効果が長持ちする。これは、所定構造の有機ポリシラザンを所定割合で配合すると、ちょうど、無機ポリシラザン間の隙間に入り込むことにより、緻密なポリシラザン処理膜を形成するためと考えられる。 In addition, the polysilazane-based surface modifier of the present invention maintains its treated effect longer than conventional polysilazane-based surface modifiers. It is considered that this is because when the organic polysilazane having a predetermined structure is blended at a predetermined ratio, it just enters the gaps between the inorganic polysilazanes to form a dense polysilazane treated film.

加えて、本発明のコーティング方法では、本発明のポリシラザン系表面改質剤をその表面に塗布後、水と接触させて加水分解させるだけなので、常温の状態で硬化処理を完成させることができるとともに、コーティングを受ける製品の表面が平面だけでなく、曲面や屈曲部を持つ面であっても容易にコーティング処理することができる。 In addition, in the coating method of the present invention, the polysilazane-based surface modifier of the present invention is only applied to the surface and then brought into contact with water for hydrolysis, so the curing treatment can be completed at room temperature. Furthermore, even if the surface of the product to be coated is not only a flat surface, but also a curved surface or a curved surface, the coating process can be easily performed.

前述の通り、本発明の本発明のポリシラザン系表面改質剤によってコーティング処理されると穏やかな撥水効果が発揮され視覚的にコーティング処理の効果を実感できるので、特にガラス製品のような透明製品にコーティング処理すると、例えば、流水洗浄したときに表面に付着した水滴がスムーズに流れることを容易に確認できるので効果的である。 As described above, when coated with the polysilazane surface modifier of the present invention, a mild water-repellent effect is exhibited, and the effect of the coating treatment can be visually felt. When the coating is applied to the surface, for example, it can be easily confirmed that water droplets adhering to the surface flow smoothly when the surface is washed with running water, which is effective.

〔ポリシラザン系表面改質剤〕
本発明のポリシラザン系表面改質剤には、パーヒドロポリシラザン(以下、「無機ポリシラザン」という。)と所定構造のオルガノポリシラザン(以下、「有機ポリシラザン」という。)が所定割合で含まれている。また架橋剤であるテトラエトキシシランと、これらを溶解する溶媒が含まれている。なお、助剤として前記以外の化合物の配合を排除するものではない。
[Polysilazane Surface Modifier]
The polysilazane-based surface modifier of the present invention contains perhydropolysilazane (hereinafter referred to as "inorganic polysilazane") and organopolysilazane having a predetermined structure (hereinafter referred to as "organic polysilazane") in a predetermined ratio. It also contains a cross-linking agent, tetraethoxysilane, and a solvent for dissolving them. It should be noted that this does not exclude the use of compounds other than those described above as auxiliary agents.

〔有機ポリシラザン〕
本発明で用いる有機ポリシラザンとしては、下記〔化1〕、〔化2〕および〔化3〕の単位を少なくともそれぞれ1以上含むものである。有機ポリシラザンとしては、前記3種類の単位が任意の順番で結合していればよい。有機ポリシラザンにおけるそれぞれの単位を存在割合は特段制限されないが、好ましくはこれら3種の単位の合計を100としたときに、〔化1〕:〔化2〕:〔化3〕=45~60:35~50:1~5%である。これら3種類の単位をすべて含む有機ポリシラザン市販品として、メルク株式会社の商品名「DURAZANE1500SlowCure」を挙げることができる。
[Organic polysilazane]
The organic polysilazane used in the present invention contains at least one unit each of the following [Chemical 1], [Chemical 2] and [Chemical 3]. As the organic polysilazane, the above three types of units may be combined in any order. The proportion of each unit in the organic polysilazane is not particularly limited, but preferably [Chem. 1]: [Chem. 2]: [Chem. 35-50: 1-5%. As an organic polysilazane commercial product containing all of these three types of units, the trade name "DURAZANE 1500 SlowCure" available from Merck & Co., Ltd. can be mentioned.

Figure 2022191969000004

Figure 2022191969000005

Figure 2022191969000006

(ただし、式中のx,y,zはそれぞれ独立して自然数であり、〔化3〕のRはHまたはCH3であり、nは1~3の自然数であり、-(OCHとは当該修飾基が存在しないことを示す)
Figure 2022191969000004

Figure 2022191969000005

Figure 2022191969000006

(where x, y, and z in the formula are each independently a natural number, R in [Chemical Formula 3] is H or CH 3 , n is a natural number of 1 to 3, and -(OCH 3 ) 0 indicates that the modifying group does not exist)

〔ポリシラザン系含有物の配合割合〕
無機ポリシラザンの量(A)と前記有機ポリシラザンの合計量(B)との配合割合は、重量比で(A):(B)=20:80~80:20の範囲で配合する。さらに好ましくは重量比で(A):(B)=40:60~60:40の範囲で配合する。無機ポリシラザンの割合が多すぎると耐衝撃性、耐久性、防汚性に劣る。一方、有機ポリシラザンの割合が多すぎると強度が不足し、防汚性にも劣る。
[Mixing ratio of polysilazane-based ingredients]
The mixing ratio of the amount (A) of the inorganic polysilazane and the total amount (B) of the organic polysilazane is in the range of (A):(B)=20:80 to 80:20 by weight. More preferably, the weight ratio of (A):(B) is in the range of 40:60 to 60:40. If the proportion of inorganic polysilazane is too high, the impact resistance, durability and antifouling properties will be poor. On the other hand, if the proportion of the organic polysilazane is too high, the strength will be insufficient and the antifouling property will also be poor.

〔テトラエトキシシラン〕
テトラエトキシシランは、架橋剤であり、前記ポリシラザン系含有物が加水分解するに際して重合してコーティング膜の形成を助ける助剤である。ポリシラザン系化合物の重合のための架橋剤としては、テトラエトキシシラン以外にも知られた化合物があるが、本発明のポリシラザン系表面改質剤の重合架橋剤としてはテトラエトキシシランが最も適当である。
[Tetraethoxysilane]
Tetraethoxysilane is a cross-linking agent and an auxiliary agent that aids in the formation of a coating film by polymerizing when the polysilazane-based content is hydrolyzed. There are compounds other than tetraethoxysilane that are known as cross-linking agents for polymerization of polysilazane-based compounds, but tetraethoxysilane is most suitable as a cross-linking agent for polymerization of the polysilazane-based surface modifier of the present invention. .

〔溶媒〕
ポリシラザン系表面改質剤では、前記成分をすべて溶解させるための溶媒が用いられる。溶媒としては、コーティング処理が常温で行われることから、常温で揮発性のあるジブチルエーテルやキシレンなどの有機物を使用することができる。なかでも前記ポリシラザン系含有物の相溶性からn-ジブチルエーテルが好ましい。
〔solvent〕
A polysilazane-based surface modifier uses a solvent for dissolving all of the above components. As the solvent, organic substances such as dibutyl ether and xylene, which are volatile at room temperature, can be used because the coating process is performed at room temperature. Among them, n-dibutyl ether is preferable because of compatibility with the polysilazane-based content.

〔調製方法〕
本発明の表面改質剤について調製方法の一例を示す。ただし本発明の表面改質剤は下記調製方法によるもののみには限られない。
[Preparation method]
An example of a preparation method for the surface modifier of the present invention is shown. However, the surface modifier of the present invention is not limited to those prepared by the following preparation method.

まず、乾燥空気でガス置換を行ったグローブボックス内で、前記有機ポリシラザンと溶媒を混合する。この混合溶液をグローブボックスから取り出し、大気中で無機ポリシラザンを添加する。これを撹拌速度200rpm以上で数分攪拌する。その後、架橋剤であるテトラエトキシシランを添加する。そして撹拌速度200rpm以上で30分以上攪拌する。 First, the organic polysilazane and the solvent are mixed in a glove box in which the gas is replaced with dry air. This mixed solution is taken out of the glove box, and inorganic polysilazane is added in the atmosphere. This is stirred for several minutes at a stirring speed of 200 rpm or higher. After that, tetraethoxysilane, which is a cross-linking agent, is added. Then, the mixture is stirred at a stirring speed of 200 rpm or more for 30 minutes or more.

〔対象へのコーティング方法〕
本発明の表面改質剤を透明ガラス板の表面にコーティングには以下の方法で行うことができる。なお、被コーティング材料として透明ガラス板を選択したのは、本発明の効果を最も発揮できるのが透明ガラス板であるからであって、透明ガラス板以外、例えば金属板などであっても同様の方法でコーティングを行うことができる。また板といっても、平面板ばかりでなく、曲面を有する板や屈曲部を有する板であっても本発明のコーティング方法を利用できる。
[Method of coating the target]
The surface modifier of the present invention can be coated on the surface of a transparent glass plate by the following method. The reason why the transparent glass plate was selected as the material to be coated is that the effect of the present invention can be exhibited most effectively with the transparent glass plate. The coating can be carried out by any method. The coating method of the present invention can be applied not only to flat plates, but also to plates with curved surfaces and plates with bent portions.

本発明のコーティング方法ではまず初めに透明ガラス板の表面に、本発明の表面改質剤を塗布する工程を経る。なおこの塗布工程に先立って、その準備段階として透明ガラス板の塗布を受ける表面を清浄にしたうえで、2-プロパノール(イソプロピルアルコール)や無水エタノールなどを使って脱脂・脱水しておく。 In the coating method of the present invention, first, the surface of a transparent glass plate is coated with the surface modifier of the present invention. Prior to this coating process, as a preparatory step, the surface of the transparent glass plate to be coated is cleaned and then degreased and dehydrated using 2-propanol (isopropyl alcohol) or absolute ethanol.

塗布の方法としては、コーティング液を滴下やスプレーする方法、コーティング液に透明ガラス板を浸漬させる方法などを挙げることができる。コーティング液を透明ガラス板表面に広く薄く被覆させるため、コーティング液が付着した表面を毛羽立たない布地などで拭き伸ばしてもよい。 Examples of the coating method include a method of dropping or spraying the coating liquid, a method of immersing the transparent glass plate in the coating liquid, and the like. In order to coat the surface of the transparent glass plate with the coating liquid widely and thinly, the surface to which the coating liquid has adhered may be wiped with a lint-free cloth or the like.

その後の工程としては、コーティング液を塗布した表面に、さらにスプレーなどで水と接触させてコーティング液を加水分解させる。コーティング液は、加水分解されると非晶質シリカ-ポリシロキサン共重合膜が形成される。この加水分解は常温下で反応させることができる。膜形成後、余分な水分を乾燥した布などで拭きとる。さらに残存溶媒を完全に揮発させるためにしばらく養生することが好ましい。養生は減圧下で行うと効率的である。 As a subsequent step, the surface coated with the coating liquid is further brought into contact with water by spraying or the like to hydrolyze the coating liquid. The coating liquid forms an amorphous silica-polysiloxane copolymer film when hydrolyzed. This hydrolysis can be reacted at normal temperature. After film formation, excess moisture is wiped off with a dry cloth or the like. Furthermore, it is preferable to cure for a while in order to completely volatilize the residual solvent. Curing under reduced pressure is efficient.

〔コーティング液の調製〕
無機ポリシラザンであるパーヒドロポリシラザンとしては、商品名「DURAZANE2800」(メルク株式会社製)と、商品名「DURAZANE2200」(メルク株式会社製)を用いた。有機ポリシラザンとしては〔化1〕、〔化2〕および下記〔化3〕の混合物(商品名「DURAZANE1500SlowCure」メルク株式会社製)を用いた。
[Preparation of coating liquid]
As perhydropolysilazane, which is an inorganic polysilazane, trade name "DURAZANE2800" (manufactured by Merck Ltd.) and trade name "DURAZANE2200" (manufactured by Merck Ltd.) were used. As the organic polysilazane, a mixture of [Chem. 1], [Chem. 2] and the following [Chem.

溶媒としてn-ジブチルエーテル、架橋剤としてのテトラエトキシシランを用いて、〔表1〕の割合で配合したコーティング液試料1~4のコーティング液を調整した。調整手順は上記〔調製方法〕の欄に記載したとおりの方法で行った。ただし無機ポリシラザンまたは有機ポリシラザンを加えない系(2,3)については、当該化合物の添加過程を省略した。成分配合量(g)は各試薬の配合量をそれぞれ示しており、表1最右欄の「無機:有機 割合(%)」は、各試薬における無機ポリシラザンと有機ポリシラザンの割合を示している。無機ポリシラザンと有機ポリシラザンの成分配合量は、これらポリシラザンを主要成分として含む試薬(商品名「DURAZANE」)の配合量として記載しているので、表1に記載した配合量から計算される割合の値が、最右欄の「無機:有機 割合(%)」の値になるわけではない。 Using n-dibutyl ether as a solvent and tetraethoxysilane as a cross-linking agent, coating liquid samples 1 to 4 were prepared in the proportions shown in Table 1. The adjustment procedure was performed as described in the section [Preparation method] above. However, in the systems (2, 3) to which no inorganic polysilazane or organic polysilazane was added, the process of adding the compound was omitted. The compounding amount (g) of each component indicates the amount of each reagent, and the "inorganic:organic ratio (%)" in the rightmost column of Table 1 indicates the ratio of inorganic polysilazane and organic polysilazane in each reagent. The compounding amounts of inorganic polysilazane and organic polysilazane are described as the compounding amounts of reagents (trade name "DURAZANE") containing these polysilazanes as main components. However, it does not correspond to the value of “inorganic:organic ratio (%)” in the rightmost column.

Figure 2022191969000007
Figure 2022191969000007

〔コーティング膜の形成〕
A2サイズのガラス板のコーティングされる側の面(ガラス板表面)を清浄にした後、2-プロパノール25%水溶液で脱脂し、その後乾燥させた。上記で調整したコーティング液試料1~4を乾燥したスポンジに含ませて、ガラス板表面に擦り付けながら動かして表面塗布した。この塗布作業を変えながら、塗布で動かす方向を90°変えながら4回繰り返した。その後すぐに塗布面に水をスプレーで吹きかけ、加水分解による共重合を生じさせコーティング膜を形成した。その後ガラス板表面に残る水を乾燥したマイクロファイバータオルで拭き取った。その後1週間放置してコーティング膜を養生した。
[Formation of coating film]
After cleaning the side of the A2 size glass plate to be coated (glass plate surface), it was degreased with a 25% aqueous solution of 2-propanol and then dried. Coating liquid samples 1 to 4 prepared above were soaked in a dry sponge and applied to the surface of the glass plate by rubbing and moving the sponge. This coating operation was repeated four times while changing the direction of movement by 90°. Immediately thereafter, water was sprayed onto the coated surface to cause copolymerization by hydrolysis to form a coating film. After that, water remaining on the surface of the glass plate was wiped off with a dry microfiber towel. After that, it was left for one week to cure the coating film.

〔防汚性評価〕
試料1~4およびガラス板表面を清浄にしただけでコーティング処理を行わなかったブランクに対して、透明ガラス板の上に施工後し、水彩絵の具でコーティング表面を汚し、1日および3日放置した。その後、ホースから出る流水を使って、流水の威力だけでその表面に付着した汚れが落ちるか確認した。その結果は下記のとおりである。
[Anti-fouling evaluation]
For Samples 1 to 4 and blanks where the glass plate surface was cleaned and no coating treatment was applied, after coating on a transparent glass plate, the coating surface was stained with watercolor paint, and left for 1 day and 3 days. . After that, using the running water from the hose, it was confirmed whether the dirt adhering to the surface could be removed only by the power of the running water. The results are as follows.

《絵の具付着直後の状態》
・ブランク:水彩絵の具を付けたらベタっとついた
・試料1:水彩絵の具を付けたらはじいた
・試料2:水彩絵の具を付けたらベタっとついた
・試料3:水彩絵の具を付けたら少しはじいた
・試料4:水彩絵の具を付けたらはじいた
<< State immediately after paint adhesion >>
・Blank: When watercolor paint was applied, it was sticky ・Sample 1: When watercolor paint was applied, it was repelled ・Sample 2: When watercolor paint was applied, it was sticky ・Sample 3: When watercolor paint was applied, it was slightly repelled・Sample 4: Repelled when watercolor paint was applied

《付着1日後の洗浄結果》
・ブランク:流水だけでは汚れの形が残って取れにくかった。その後、拭き取っても汚れの形は取れなかった
・試料1:流水だけで汚れが取れた。その後、拭き取すると汚れが綺麗に取れるだけでなくツヤが出た
・試料2:流水だけでは汚れの形が残った。その後、拭き取っても汚れの形は取れなかった
・試料3:流水だけでは汚れの形が残った。その後、拭き取っても汚れの形が取れなかった
・試料4:流水だけは汚れの形が少し残った。その後、拭き取っても汚れの形は取れなかった
《Results of cleaning one day after adhesion》
・Blank: It was difficult to remove the dirt with just running water. After that, even if it was wiped off, the shape of the dirt could not be removed. ・Sample 1: The dirt was removed only with running water. After that, when it was wiped off, not only did the dirt come off cleanly, but also the gloss appeared. ・Sample 2: The shape of the dirt remained only with running water. After that, even if it was wiped off, the shape of the dirt could not be removed. ・Sample 3: The shape of the dirt remained only with running water. After that, even if it was wiped off, the shape of the dirt could not be removed. ・Sample 4: The shape of the dirt remained slightly only with running water. After that, even if I wiped it off, the shape of the dirt could not be removed

《付着3日後の洗浄結果》
・ブランク:流水だけでは汚れの形が残って取れなかった。その後、拭き取っても汚れの形は取れなかった
・試料1:流水だけで汚れが取れた。その後、拭き取すると汚れが綺麗に取れるだけでなくツヤが出た
・試料2:流水だけでは汚れの形が少し残った。その後、拭き取っても汚れの形は少し残り、完全には取れなかった
・試料3:流水だけでは汚れの形が残った。その後、拭き取っても汚れの形は取れなかった
・試料4:流水だけは、汚れの形が残った。その後、拭き取っても汚れの形は取れなかった
<<Results of cleaning after 3 days of adhesion>>
・Blank: The shape of the dirt remained and could not be removed only by running water. After that, even if it was wiped off, the shape of the dirt could not be removed. ・Sample 1: The dirt was removed only with running water. After that, when it was wiped off, not only did the dirt come off cleanly, but also the gloss appeared. ・Sample 2: The shape of the dirt remained slightly with only running water. After that, even if it was wiped off, some form of dirt remained and could not be completely removed. ・Sample 3: The form of dirt remained only with running water. After that, even if it was wiped off, the shape of the dirt could not be removed. ・Sample 4: Only the running water left the shape of the dirt. After that, even if I wiped it off, the shape of the dirt could not be removed

〔防擦傷性評価〕
コーティング後1日及び7日放置した試料1~4及びブランクの表面を、クロムバナジウム鋼のグリッププラスドライバー(ロックウェル硬度60HRC以上)を使って引っ掻いた。その結果は下記のとおりである。
[Scratch resistance evaluation]
The surfaces of samples 1-4 and blanks left 1 day and 7 days after coating were scratched using a chrome vanadium steel grip Phillips screwdriver (60 HRC Rockwell hardness or greater). The results are as follows.

《1日後》
・ブランク:表面に傷跡がついた
・試料1:表面に傷跡がつかなかった
・試料2:表面に若干の傷跡がついた
・試料3:表面に若干の傷跡がついた
・試料4:表面に若干の傷跡がついた
《1 day later》
・Blank: Scratches on the surface ・Sample 1: No scars on the surface ・Sample 2: Some scratches on the surface ・Sample 3: Some scratches on the surface ・Sample 4: On the surface with some scars

《7日後》
・試料1:表面に傷跡がつかなかった
・試料2:表面に傷跡がつかなかった
・試料3:表面に傷跡がつかなかった
・試料4:表面に傷跡がつかなかった
《7 days later》
・Sample 1: no scar on the surface ・Sample 2: no scar on the surface ・Sample 3: no scar on the surface ・Sample 4: no scar on the surface

本発明のポリシラザン系表面改質剤は、それを表面にコーティングすると従来のポリシラザン系表面改質剤同様、高い防擦傷性を与えるとともに、従来のポリシラザン系表面改質剤にはない、目に見えてその撥水性が確認できるという穏やかな撥水効果も発揮されるので、産業上の利用価値は大きい。

The polysilazane-based surface modifier of the present invention, when coated on the surface, imparts high scratch resistance as in the case of conventional polysilazane-based surface modifiers. Since a mild water-repellent effect is exhibited by which the water repellency can be confirmed, the industrial utility value is great.

Claims (2)

パーヒドロポリシラザン、オルガノポリシラザン、テトラエトキシシランおよび溶媒を含むポリシラザン系表面改質剤であって、
前記オルガノポリシラザンとしては、下記〔化1〕、〔化2〕および〔化3〕の単位を少なくともそれぞれ1以上含むものであり、
Figure 2022191969000008

Figure 2022191969000009

Figure 2022191969000010

(ただし、式中のx,y,zはそれぞれ独立して自然数であり、〔化3〕のRはHまたはCH3であり、nは1~3の自然数であり、-(OCHとは当該修飾基が存在しないことを示す)
前記パーヒドロポリシラザンと前記オルガノポリシラザンとの配合割合が20:80~80:20である表面改質剤。
A polysilazane-based surface modifier containing perhydropolysilazane, organopolysilazane, tetraethoxysilane and a solvent,
The organopolysilazane contains at least one unit each of the following [Chemical 1], [Chemical 2] and [Chemical 3],
Figure 2022191969000008

Figure 2022191969000009

Figure 2022191969000010

(where x, y, and z in the formula are each independently a natural number, R in [Chemical Formula 3] is H or CH 3 , n is a natural number of 1 to 3, and -(OCH 3 ) 0 indicates that the modifying group does not exist)
A surface modifier, wherein the blending ratio of the perhydropolysilazane and the organopolysilazane is 20:80 to 80:20.
ガラス板の表面に請求項1記載の表面改質剤を塗布する工程と
その後、塗布された前記コーティング液に水を接触させて加水分解することで、前記ガラス板の表面にコーティング膜を形成する工程とを少なくとも経る
透明ガラス板表面へのコーティング方法。
a step of applying the surface modifier according to claim 1 to the surface of a glass plate; and thereafter, forming a coating film on the surface of the glass plate by bringing the applied coating liquid into contact with water to hydrolyze it. A method of coating a surface of a transparent glass plate, comprising at least the steps of:
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116333499A (en) * 2023-02-28 2023-06-27 南京航空航天大学 Wave-absorbing low-shrinkage methyl vinyl silicone rubber and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116333499A (en) * 2023-02-28 2023-06-27 南京航空航天大学 Wave-absorbing low-shrinkage methyl vinyl silicone rubber and preparation method thereof

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