JP7499009B2 - Aerosol product, method for protecting the surface of construction structures using the same, and construction structures surface-protected thereby - Google Patents
Aerosol product, method for protecting the surface of construction structures using the same, and construction structures surface-protected thereby Download PDFInfo
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- JP7499009B2 JP7499009B2 JP2019091677A JP2019091677A JP7499009B2 JP 7499009 B2 JP7499009 B2 JP 7499009B2 JP 2019091677 A JP2019091677 A JP 2019091677A JP 2019091677 A JP2019091677 A JP 2019091677A JP 7499009 B2 JP7499009 B2 JP 7499009B2
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- 239000000443 aerosol Substances 0.000 title claims description 51
- 238000010276 construction Methods 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 9
- 239000007788 liquid Substances 0.000 claims description 83
- 239000003795 chemical substances by application Substances 0.000 claims description 40
- 229920005989 resin Polymers 0.000 claims description 38
- 239000011347 resin Substances 0.000 claims description 38
- 239000003380 propellant Substances 0.000 claims description 24
- 239000012669 liquid formulation Substances 0.000 claims description 12
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical class CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 9
- 239000004567 concrete Substances 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 239000011449 brick Substances 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 239000003949 liquefied natural gas Substances 0.000 claims description 4
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 3
- 239000000378 calcium silicate Substances 0.000 claims description 3
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 3
- 239000011381 foam concrete Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 239000010454 slate Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 4
- 238000001723 curing Methods 0.000 description 34
- 239000010408 film Substances 0.000 description 14
- 239000000463 material Substances 0.000 description 13
- 239000004925 Acrylic resin Substances 0.000 description 9
- 229920000178 Acrylic resin Polymers 0.000 description 9
- 239000003822 epoxy resin Substances 0.000 description 9
- 229920000647 polyepoxide Polymers 0.000 description 9
- 238000007689 inspection Methods 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000383 hazardous chemical Substances 0.000 description 4
- 150000001451 organic peroxides Chemical class 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- 229920001228 polyisocyanate Polymers 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- 238000004901 spalling Methods 0.000 description 2
- 235000006481 Colocasia esculenta Nutrition 0.000 description 1
- 240000004270 Colocasia esculenta var. antiquorum Species 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229920002396 Polyurea Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000013056 hazardous product Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000013008 moisture curing Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- -1 polyol compound Chemical class 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007870 radical polymerization initiator Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Lining And Supports For Tunnels (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Description
本発明は、外容器と内容器を有する二重容器構造のエアゾール製品であって、外容器に第一の液剤を噴射剤と混合溶解して封入し、かつ内容器に第二の液剤を封入したものに関する。本発明はさらに、当該エアゾールを建設系構造物に吹き付けて表面に樹脂皮膜を形成する表面保護方法、および表面保護された建設系構造物にも関する。 The present invention relates to an aerosol product with a double container structure having an outer container and an inner container, in which a first liquid agent is mixed and dissolved with a propellant and enclosed in the outer container, and a second liquid agent is enclosed in the inner container. The present invention also relates to a surface protection method in which the aerosol is sprayed onto a construction structure to form a resin film on the surface, and to the surface-protected construction structure.
トンネルのコンクリート剥離・剥落への対策として日々の検査の中で、目地部やジャンカ部等の不安定箇所や小さい浮きの叩き落としを実施している。しかしながら、一度叩き落とした箇所は、次回の検査以降、再び叩き落としが必要な箇所となることが多く、次第に叩き落とした範囲そのものが広がる。そのため、こうした箇所に補修材料を塗布し、樹脂皮膜を形成して表面を保護できれば、当面の剥落対策に充分な効果を発揮できると考えられており、多様な材料や資材、機材を用いた方法で対策が取られている。 As a measure to prevent spalling and falling of concrete in tunnels, unstable areas such as joints and junk areas and small floating areas are knocked off during daily inspections. However, areas that have been knocked off once often need to be knocked off again from the next inspection onwards, and the area that has been knocked off gradually expands. For this reason, it is thought that applying repair material to such areas and forming a resin film to protect the surface will be sufficient to prevent spalling for the time being, and measures are being taken using a variety of methods, supplies, and equipment.
しかしながら、現在広く行われている対策方法には以下の課題がある。
（１）補修材料の取扱いには、計量や混合、塗布といったある程度の専門性が必要である。
（２）一般に入手可能な補修材料を使用する場合には、通常の保護養生資材の他に、計量機械、混合機械、混合容器、及びローラーや刷毛等が必要で、検査に持ち歩く場合に携行荷物が多くなる。また洗浄に使用する溶剤やウェスも必要になり、廃棄物も多く発生する。
（３）被施工箇所は点在している場合が多く、その都度補修材料の計量混合、器具による施工、洗浄が必要で、その都度、廃棄物が発生する。
（４）補修材料を凹凸のある面に斑なく塗布するには吹き付け施工が好ましいが、このような施工は一般的に動力を必要とするために、簡便さが失われ工事発注が必要となりコストが高くなる。
However, the currently widely used countermeasures have the following problems.
(1) Handling repair materials requires a certain level of expertise, such as measuring, mixing, and applying.
(2) When using commonly available repair materials, in addition to the usual protective materials, weighing machines, mixing machines, mixing containers, rollers, brushes, etc. are required, which increases the amount of luggage required to carry them to the inspection. In addition, solvents and rags for cleaning are also required, which generates a lot of waste.
(3) The areas to be repaired are often scattered, and each time repair materials need to be measured and mixed, repaired with equipment, and cleaned, which generates waste.
(4) Spraying is preferable for applying repair materials evenly to uneven surfaces, but this type of application generally requires power, which reduces the convenience and requires ordering construction work, which increases costs.
近年、これらの課題解消を目的として補修材料をエアゾール化した製品が開発され、実際に点検現場で用いられている。特許文献１は、いわゆる２液主剤型と呼ばれるアクリル系反応硬化性樹脂の２つの液剤をそれぞれエアゾール化した２缶タイプの補修材料である。この補修材料はそれぞれのエアゾールを被補修箇所に順番に噴射して接触混合させるか、２つのエアゾール缶を専用のアタッチメントに取り付けて同時に噴射し２つの液剤を大気中で衝突混合させるもので、比較的簡便な方法で表面保護が可能である。しかしながら、常に２つのエアゾール缶と専用アタッチメントを携行しなくて良いといった簡便さを有すること、２つの液剤の混合比が所定比からずれにくいこと、大気中での衝突によらずに混合できるので信頼性が高いこと、といった特徴を有する本発明については記載がない。 In recent years, products that aerosolize repair materials have been developed to solve these problems and are actually used at inspection sites. Patent Document 1 describes a two-can type repair material in which two liquid agents, a so-called two-liquid base type acrylic reactive curing resin, are aerosolized. This repair material is sprayed in turn at the repair site to allow contact mixing, or two aerosol cans are attached to a special attachment and sprayed simultaneously to allow collision mixing of the two liquid agents in the air, making it possible to protect surfaces in a relatively simple manner. However, there is no mention of the present invention, which has the characteristics of being simple, such as not having to always carry two aerosol cans and a special attachment, being unlikely to deviate from the specified mixing ratio of the two liquid agents, and being highly reliable because they can be mixed without collision in the air.
非特許文献１は、湿気硬化型の１液型のエポキシ樹脂をエアゾール化した製品に関し、この製品は被補修箇所に単純に噴射するだけで表面保護が可能である。しかしながら、こうした製品を実際に保存・使用する環境は高温多湿など苛酷であることが多い。このため製品内に湿気が侵入するのを防止するのは困難であり、開封して一度でも使用したエアゾールは時間経過とともにエアゾール先端のノズルが硬化閉塞して使用できなくなり未使用分がロスとなる問題が発生する（すなわち、ハンドリングタイムが短い）。また、未使用製品であっても保管中にエアゾール先端ノズルから湿気が侵入して硬化閉塞を起こしてしまうこともあり、いざ点検時に使おうとしたときに噴射ができず、しかもその使用可否が外見からは判らないといった課題もあった。またエポキシ樹脂は硬化時間が長いため、噴射後の樹脂皮膜の硬化までに長時間を要するために液だれが発生し、車両や軌道等を汚染する可能性があった。 Non-Patent Document 1 relates to a product in which a moisture-curing, one-liquid type epoxy resin is made into an aerosol, and this product can protect the surface by simply spraying it on the repaired area. However, the environment in which such products are actually stored and used is often harsh, such as high temperature and humidity. For this reason, it is difficult to prevent moisture from entering the product, and if an aerosol is opened and used even once, the nozzle at the tip of the aerosol hardens and clogs over time, making it unusable and resulting in the loss of unused parts (i.e., the handling time is short). In addition, even if the product is unused, moisture may enter the aerosol tip nozzle during storage, causing hardening and clogging, making it impossible to spray when trying to use it during inspection, and there is also the problem that it is not possible to tell from the outside whether it can be used or not. In addition, since epoxy resin takes a long time to harden, it takes a long time for the resin film to harden after spraying, which can cause dripping and contaminate vehicles, tracks, etc.
前述の各課題を鑑み、２つの液剤を所定比に混合可能で、混合の信頼性も高く、かつハンドリングタイムの長い１缶タイプのエアゾール製品を提供することが求められている。 In view of the above-mentioned problems, there is a need to provide a one-can aerosol product that can mix two liquid agents in a specified ratio, has high mixing reliability, and has a long handling time.
すなわち本発明は、以下を提供できる。 That is, the present invention can provide the following:
［１］
第一の液剤及び液体である噴射剤の混合物を封入する外容器と、
前記外容器から分離され、かつ第二の液剤を封入する内容器と、
前記内容器を外部から開封することで前記混合物と前記第二の液剤との混合を可能とする機構と
を含むエアゾール製品であって、
前記第一の液剤と前記第二の液剤がそれぞれ、２液型反応硬化性液状樹脂の各成分に相当する
ことを特徴とするエアゾール製品。
[1]
an outer container enclosing a mixture of the first liquid agent and a liquid propellant;
an inner container separated from the outer container and enclosing a second liquid agent;
and a mechanism for allowing the mixture and the second liquid agent to be mixed by opening the inner container from the outside,
The aerosol product, wherein the first liquid agent and the second liquid agent each correspond to a component of a two-part reactive curable liquid resin.
［２］
前記２液型反応硬化性液状樹脂が（メタ）アクリル酸エステル類を主成分とする２液主剤型反応硬化性液状樹脂であり、
前記第一の液剤又は前記第二の液剤のうちの片方に少なくとも（メタ）アクリル酸エステル類及びラジカル源を含有し、もう片方に少なくとも（メタ）アクリル酸エステル類及び前記ラジカル源と反応しラジカルを発生させることができる還元剤を含有することを特徴とする［１］に記載のエアゾール製品。
[2]
the two-component reactive curable liquid resin is a two-component base reactive curable liquid resin containing (meth)acrylic acid esters as a main component,
The aerosol product according to [1], characterized in that one of the first liquid formulation or the second liquid formulation contains at least a (meth)acrylic acid ester and a radical source, and the other liquid formulation contains at least a (meth)acrylic acid ester and a reducing agent capable of reacting with the radical source to generate radicals.
［３］
（メタ）アクリル酸エステル類を主成分とした２液型反応硬化性液状樹脂の大気中５℃におけるバルクの硬化時間が３０分以下であり、前記噴射剤が液化天然ガス又はジメチルエーテルであることを特徴とする［１］又は［２］に記載のエアゾール製品。
[3]
The aerosol product according to [1] or [2], characterized in that the bulk curing time of the two-part reactive curing liquid resin containing (meth)acrylic esters as a main component is 30 minutes or less at 5°C in the atmosphere, and the propellant is liquefied natural gas or dimethyl ether.
［４］
前記第一の液剤及び前記第二の液剤の体積を１００とするときの前記噴射剤の体積の比率が、１００に対して６５～２３０の範囲であることを特徴とする［１］～［３］のいずれか一項に記載のエアゾール製品。
[4]
The aerosol product according to any one of [1] to [3], wherein the ratio of the volume of the propellant to the volume of the first liquid formulation and the volume of the second liquid formulation is 100 is in the range of 65 to 230.
［５］
［１］～［４］のいずれか一項に記載のエアゾール製品からエアゾールを噴射して、コンクリート、モルタル、レンガ、軽量発泡コンクリート、スレート、ケイ酸カルシウム板、及び金属からなる群から選択される一種以上の表面に、前記２液型反応硬化性液状樹脂からなる塗膜を形成する建設系構造物の表面保護方法。
[5]
A surface protection method for a construction structure, comprising spraying an aerosol from the aerosol product according to any one of [1] to [4] above, and forming a coating film made of the two-component reactive curing liquid resin on one or more surfaces selected from the group consisting of concrete, mortar, brick, lightweight foamed concrete, slate, calcium silicate board, and metal.
［６］
［５］に記載の方法で表面保護された建設系構造物。
[6]
A construction structure whose surface has been protected by the method according to [5].
本発明によれば、単独容器だけ携行すれば簡便に補修材料を被補修箇所へ噴射し硬化した液剤から塗膜形成が可能であり、噴射の際に二種の液剤の混合比を正確に設定でき、しかも混合の信頼性が高いという効果が得られる。またハンドリングタイムが長いため容器内の材料を使い切ることが可能で無駄がない。 According to the present invention, it is possible to easily spray the repair material onto the area to be repaired by carrying only a single container, and form a coating from the hardened liquid. The mixing ratio of the two types of liquid can be accurately set when spraying, and the mixing is highly reliable. In addition, since the handling time is long, it is possible to use up the material in the container, and there is no waste.
本明細書における数値範囲は、別段の断わりがない限りはその上限値と下限値を含むものとする。 Numerical ranges in this specification include the upper and lower limits unless otherwise specified.
本エアゾール製品の容器としては、二種の液体をそれぞれに分離封入可能な外容器と内容器の二重容器構造を有し、かつ内容器を外部から開封することでその二種の液体の混合を可能とする機構を持つものであれば使用できる（以下、「外容器」と「内容器」の組み合わせをまとめて、製品としての単独の「容器」と称することがある）。容器は例えば缶やプラスチック容器であってよく、その材質は内容物に応じて任意に選択でき、例えば鉄、鉄合金、ＰＥＴ樹脂などであってもよく、またその内部や外部には容器保護や使用者の注意を惹く目印のために何らかのコーティングを有していてもよい。また内容器を開封する機構としては、内容器を破壊する手段（内容器を刺したり内容器に捩じ込んだりして内容器を不可逆的に破壊するための手段や、内容器を可逆的に開閉する弁等）と、それを外部から使用者が操作できる手段（容器の外部に露出するダイヤルやスイッチ等）とを含むことが好ましい。安価に実現できるという経済性の観点からは内容器を不可逆的に破壊する手段を使うことが好ましい。また誤操作の防止という観点からは内容器を可逆的に開閉する手段を用いるのが好ましい。 The container for this aerosol product can be any container that has a double container structure of an outer container and an inner container that can separately contain two types of liquid, and has a mechanism that allows the two types of liquid to be mixed by opening the inner container from the outside (hereinafter, the combination of the "outer container" and the "inner container" may be collectively referred to as a single "container" as a product). The container may be, for example, a can or a plastic container, and its material may be selected arbitrarily depending on the contents, such as iron, iron alloy, PET resin, etc., and may have some kind of coating on the inside or outside for protecting the container or as a mark to attract the user's attention. In addition, the mechanism for opening the inner container preferably includes a means for destroying the inner container (a means for irreversibly destroying the inner container by stabbing or twisting the inner container into the inner container, a valve for reversibly opening and closing the inner container, etc.) and a means for the user to operate it from the outside (a dial or switch exposed to the outside of the container, etc.). From the viewpoint of economic efficiency, such as being able to realize it at low cost, it is preferable to use a means for irreversibly destroying the inner container. Also, from the standpoint of preventing erroneous operation, it is preferable to use a means for reversibly opening and closing the inner container.
なお本発明の実施形態において内容器に液剤（液状樹脂）のみを充填し、その一方で外容器に液剤と噴射剤を混合して充填する構成を採るのは、以下の理由による。すなわち、エアゾール分野で使われる噴射剤は一般に沸点が低く、開放されると断熱膨張する。また容器の構造上、内容器の大きさは外容器に比べて相当に小さくせざるをえない。すると、小さい内容器に噴射剤が入っていると、内容器を開封した際に、まだ外容器から外気へと噴射する前にもかかわらず外容器内の温度が下がりすぎ、噴射操作時に支障をきたす場合がある。本発明者はこの問題を踏まえ、上記の構成を採用した。 In the embodiment of the present invention, the inner container is filled with only a liquid agent (liquid resin), while the outer container is filled with a mixture of the liquid agent and propellant, for the following reasons. Propellants used in the aerosol field generally have a low boiling point and expand adiabatically when opened. In addition, due to the structure of the container, the size of the inner container must be significantly smaller than that of the outer container. If the propellant is contained in a small inner container, when the inner container is opened, the temperature inside the outer container may drop too much before the propellant is sprayed from the outer container into the outside air, causing problems during the spraying operation. The inventor took this problem into consideration and adopted the above configuration.
内容器を開封した後には、内容器とつながった外容器を使用者がよく振り混ぜることで、２液型反応硬化性液状樹脂の硬化反応を開始できる。 After opening the inner container, the user can start the hardening reaction of the two-component reactive hardening liquid resin by thoroughly shaking the outer container connected to the inner container.
そのようなエアゾール容器の具体例としては、スズカファイン社製の外容器と内容器を組み合わせ、内容器開封手段を設けたものが挙げられる。また別の具体例としては、単独の容器内で二種の液体を分離封入でき、かつ、その二種の液体を混合可能な機構を有するエアゾール容器等が挙げられる。 A specific example of such an aerosol container is one manufactured by Suzuka Fine Co., Ltd., which combines an outer container with an inner container and is provided with a means for opening the inner container. Another specific example is an aerosol container that can separately enclose two types of liquid within a single container and has a mechanism for mixing the two types of liquid.
本エアゾール製品が含む２液型反応硬化性液状樹脂は、二種の液剤に分けられており、それらを混合することで重合硬化反応が開始する特徴を有する。このような液状樹脂としては、主剤と硬化剤が全く異なる消防法危険物第四類に分類される組成物からなるエポキシ樹脂（例えば主剤がエポキシ樹脂化合物で硬化剤がポリアミン化合物）、ウレタン樹脂（例えば主剤がポリオール化合物で硬化剤がポリイソシアネート化合物）、ポリウレア樹脂（例えば主剤がポリイソシアネート化合物で硬化剤がポリアミン化合物）、主剤が消防法危険物第四類で硬化剤が消防法危険物第五類である有機過酸化物そのものあるいは有機過酸化物を多く含有する不飽和ポリエステル樹脂及びビニルエステル樹脂、いわゆる２液主剤型と呼ばれる（メタ）アクリル酸エステル類（消防法危険物第四類）を主成分とする硬化性アクリル樹脂などが挙げられる。 The two-component reactive curing liquid resin contained in this aerosol product is divided into two types of liquid agents, and has the characteristic that a polymerization curing reaction begins when they are mixed. Examples of such liquid resins include epoxy resins (for example, the main agent is an epoxy resin compound and the curing agent is a polyamine compound) made of a composition classified as Class 4 of hazardous materials under the Fire Service Act, in which the main agent and the curing agent are completely different, urethane resins (for example, the main agent is a polyol compound and the curing agent is a polyisocyanate compound), polyurea resins (for example, the main agent is a polyisocyanate compound and the curing agent is a polyamine compound), unsaturated polyester resins and vinyl ester resins whose main agent is Class 4 of hazardous materials under the Fire Service Act and whose curing agent is Class 5 of hazardous materials under the Fire Service Act, or organic peroxides themselves or that contain a large amount of organic peroxides, and curable acrylic resins whose main component is (meth)acrylic acid esters (Class 4 of hazardous materials under the Fire Service Act), so-called two-component main agent types.
２液型反応硬化性液状樹脂としては、これらの中ではハンドリングタイム（硬化時間）や液剤の粘性を調整しやすく、硬化時間が速い（メタ）アクリル酸エステル類を主成分とする２液主剤型硬化性アクリル樹脂（以下、２液主剤型反応硬化性液状樹脂ということもある。）が好ましい。２液主剤型硬化性アクリル樹脂の一般的な形態は２つの液剤で構成され、両液剤には主成分としてそれぞれ（メタ）アクリル酸エステル類を含有し、片方の液剤には更に有機過酸化物等のラジカル源を含有し、もう片方の液剤に更に当該ラジカル源と反応しラジカルを発生させることができる還元剤を含有するものが挙げられる。２液主剤型硬化性アクリル樹脂では、消防法危険物第五類に分類される有機過酸化物等のラジカル源は、それを含む液剤中の概ね５質量％未満であるのが好ましい。片方の液剤を第一の液剤といい、もう片方の液剤を第二の液剤ということもある。片方の液剤を第二の液剤といい、もう片方の液剤を第一の液剤ということもある。 Among these, the two-liquid reactive curable liquid resins are preferably two-liquid main agent curable acrylic resins (hereinafter sometimes referred to as two-liquid main agent curable liquid resins) whose main components are (meth)acrylic acid esters, which are easy to adjust the handling time (curing time) and viscosity of the liquid, and have a fast curing time. The general form of two-liquid main agent curable acrylic resins is composed of two liquids, each of which contains a (meth)acrylic acid ester as the main component, one of which further contains a radical source such as an organic peroxide, and the other of which further contains a reducing agent that can react with the radical source to generate radicals. In two-liquid main agent curable acrylic resins, the radical source such as an organic peroxide, which is classified as a Class 5 hazardous material under the Fire Service Act, is preferably less than 5% by mass in the liquid containing it. One of the liquids is sometimes called the first liquid, and the other liquid is sometimes called the second liquid. One liquid is sometimes called the second liquid and the other the first liquid.
２液主剤型硬化性アクリル樹脂の例としてはデンカハードロックII（デンカ社製）が挙げられる。デンカハードロックIIの中ではエアゾールにした場合に、噴射剤に溶解して缶内封入した場合でも沈降や分離の恐れが小さく、エアゾールとして噴射したときにノズル先端の詰まりを防ぐために無機充填剤を含有しない品種である製品名ＤＫ５５０－００３やＥＲ１５３－００５が好ましい。 An example of a two-liquid base curable acrylic resin is Denka Hardlock II (manufactured by Denka). Among the Denka Hardlock II resins, product names DK550-003 and ER153-005 are preferred because they are less likely to settle or separate when made into an aerosol, even when dissolved in a propellant and sealed in a can, and do not contain inorganic fillers to prevent clogging of the nozzle tip when sprayed as an aerosol.
被補修箇所に噴射されたエアゾールから得られる塗膜は速く硬化することが好ましい一方、２液型反応硬化性樹脂の二種の液剤を単独容器内で混合して使用し、かつ液剤を使い切るためには、容器内におけるハンドリングタイムができるだけ長いことが好ましい。本発明者らはこれら相反する要求を満足させるために、２液主剤型硬化性アクリル樹脂の大気中における硬化時間及び容器内での噴射剤と液剤の混合溶解比をある範囲内とするのが好ましいことを見出した。 It is preferable that the coating obtained from the aerosol sprayed on the repaired area cures quickly, but in order to mix and use two types of two-part reactive curing resin in a single container and to use up the liquid, it is preferable that the handling time in the container be as long as possible. In order to satisfy these conflicting requirements, the inventors have found that it is preferable to set the curing time of the two-part main component curable acrylic resin in the atmosphere and the mixing and dissolution ratio of the propellant and the liquid in the container within a certain range.
ラジカル重合性樹脂である２液主剤型硬化性アクリル樹脂を用いる場合には、酸素による硬化遅延作用を受けるため、特に塗膜（薄膜）を得ようとした場合には、バルク（容器内で混合した）の場合よりも硬化時間が大きく遅れる傾向がある。したがって２液主剤型硬化性アクリル樹脂の大気中における硬化時間は短い方が好ましい。非特許文献１のエポキシ樹脂エアゾールの樹脂皮膜より短時間で硬化させる（硬化時間を８時間未満にする）ためには、５℃の環境でのバルクの硬化時間を３０分以下とするのが好ましい。 When using a two-part curable acrylic resin, which is a radically polymerizable resin, oxygen retards the curing process, and the curing time tends to be significantly longer than in the case of bulk (mixed in a container), especially when attempting to obtain a coating (thin film). Therefore, it is preferable that the curing time of the two-part curable acrylic resin in the atmosphere is short. In order to cure in a shorter time than the resin film of the epoxy resin aerosol in Non-Patent Document 1 (curing time of less than 8 hours), it is preferable to set the bulk curing time in a 5°C environment to 30 minutes or less.
なお、本明細書におけるバルクでの硬化時間の測定は、ＪＩＳ Ａ ６０２４：２０１５「建築補修用及び建築補強用エポキシ樹脂」５．３１節「可使時間」に規定される試験方法に準拠して行い、硬化時の温度－時間曲線における温度が最大となったときに硬化したと判断し、その温度が最大となったときの時間を硬化時間とする。 In this specification, the measurement of the bulk curing time is performed in accordance with the test method specified in JIS A 6024:2015 "Epoxy resins for architectural repair and reinforcement," Section 5.31 "Pot life." Curing is determined to occur when the temperature on the temperature-time curve during curing reaches a maximum, and the time when the temperature reaches a maximum is regarded as the curing time.
また、本明細書における樹脂皮膜の硬化時間は、ＪＩＳ Ａ ５３７１：２０１６「プレキャスト無筋コンクリート製品」附属書Ｂ、推奨仕様Ｂ－１平板、普通平板Ｎ３００に規定されるコンクリート板の表面に液剤が０．５ｋｇ／ｍ2の樹脂皮膜（約５００μｍの厚さ）となるようにエアゾールを噴射し、噴射からの時間計測を行い、樹脂皮膜を指触して、指とコンクリート表面との直接接触が感じられなくなる程度となった時間と定義する。 The curing time of the resin film in this specification is defined as the time when an aerosol is sprayed onto the surface of a concrete plate as specified in JIS A 5371:2016 "Precast unreinforced concrete products" Appendix B, recommended specifications B-1 flat plate, and ordinary flat plate N300 so that the liquid forms a resin film of 0.5 kg/ m2 (approximately 500 μm thick), the time is measured from the time of spraying, and when the resin film is touched with a finger, it is no longer possible to feel direct contact between the finger and the concrete surface.
本エアゾール製品が含む２液型反応硬化性液状樹脂のうちの一方の液剤を混合溶解する噴射剤は、ＪＩＳ Ｚ ８７０３：１９８３で規定する常温において液体である。噴射剤としては、液剤の溶解性の点からは液化天然ガスまたはジメチルエーテルが好ましいが、これらに限定はされず、エアゾール分野で用いられる任意の物質を使用可能である。 The propellant that dissolves one of the two-part reactive curing liquid resins contained in this aerosol product is liquid at room temperature as specified in JIS Z 8703:1983. From the viewpoint of the solubility of the liquid, the propellant is preferably liquefied natural gas or dimethyl ether, but is not limited to these and any substance used in the aerosol field can be used.
噴射剤と２液型反応硬化性液状樹脂の各液剤の合計との混合溶解比は、エアゾールとして機能させることと経済性の観点に加え、液剤を使い切るために容器内におけるハンドリングタイムをできるだけ長くする観点を踏まえると、各液剤の合計の体積１００に対する噴射剤の体積の比率（容量比）が、液剤１００に対して６５～２３０の範囲であるのが好ましく、１５０～２３０の範囲であるのがより好ましい。 The mixing and dissolving ratio of the propellant to the total of each liquid of the two-part reactive curing liquid resin is preferably such that the ratio of the volume of the propellant to the total volume of each liquid (volume ratio) is in the range of 65 to 230 parts, and more preferably 150 to 230 parts, for 100 parts of liquid, in consideration of the need to function as an aerosol and economical reasons, as well as the need to maximize the handling time in the container in order to use up the liquid.
噴射剤の容量比が２液型反応硬化性液状樹脂の各液剤の合計１００に対して２３０以下であるとエアゾール内の液材料が少なすぎず、単独容器のエアゾールで噴射施工可能な補修面積が適度に確保でき、経済性が優れるばかりでなく、点検に複数のエアゾールを携行しなければならない煩雑さを回避しやすい効果が得られる。 If the volume ratio of the propellant is 230 or less to the total of 100 of each liquid of the two-liquid reactive hardening liquid resin, the amount of liquid material in the aerosol is not too small, and a suitable repair area can be secured that can be sprayed with a single aerosol container, which is not only economical but also makes it easier to avoid the hassle of having to carry multiple aerosols for inspection.
また噴射剤の容量比が２液型反応硬化性液状樹脂の液剤１００に対して６５以上であると、容器内におけるハンドリングタイムを長くできる効果が得られる。これは噴射剤の量が適切であると液剤を十分に希釈する役割を果たすため、内容器を開封した後にもハンドリングタイムを十分に確保できるためと考えられる。 In addition, if the volume ratio of the propellant is 65 or more per 100 parts of the two-part reactive curing liquid resin, the handling time inside the container can be extended. This is thought to be because an appropriate amount of propellant serves to sufficiently dilute the liquid, ensuring sufficient handling time even after the container is opened.
本開示に係る実施形態では、エアゾール製品からエアゾールを噴射して、コンクリート、モルタル、レンガ、軽量発泡コンクリート、スレート、ケイ酸カルシウム板、及び金属からなる群から選択される一種以上の表面に、前記２液型反応硬化性液状樹脂からなる塗膜を形成して、建設系構造物の表面を保護できる。 In an embodiment of the present disclosure, an aerosol is sprayed from an aerosol product to form a coating film made of the two-component reactive curing liquid resin on one or more surfaces selected from the group consisting of concrete, mortar, brick, lightweight foamed concrete, slate, calcium silicate board, and metal, thereby protecting the surface of a construction structure.
以下に実施例を挙げて本発明を具体的に説明する。 The present invention will be specifically explained with reference to the following examples.
＜使用材料＞
２液型反応硬化性液状樹脂：２液主剤型硬化性アクリル樹脂、製品名デンカハードロックIIＤＫ５５０－００３ＷのＡ剤及びＢ剤（Ａ剤は熱ラジカル重合開始剤を含有、Ｂ剤は還元剤を含有）（液剤イ）、デンカハードロックIIＥＲ１５３－００５Ｆ（液剤ロ）（いずれもデンカ社製）
噴射剤：ジメチルエーテル（噴射剤イ）（市販品）、液化天然ガス（噴射剤ロ）（市販品）
エアゾール容器：スズカファイン社製、外容器と内容器を用い、内容器を外部から破壊するためのバルブを操作するダイアルを外容器の外部に露出するように設けたもの
<Materials used>
Two-component reactive curing liquid resin: Two-component curing acrylic resin, product name: Denka Hardlock II DK550-003W, agent A and agent B (agent A contains a thermal radical polymerization initiator, agent B contains a reducing agent) (agent A), Denka Hardlock II ER153-005F (agent B) (both manufactured by Denka Company)
Propellants: Dimethyl ether (propellant A) (commercially available), liquefied natural gas (propellant B) (commercially available)
Aerosol container: Manufactured by Suzuka Fine Co., Ltd., consists of an outer container and an inner container, with a dial exposed on the outside of the outer container to operate the valve for destroying the inner container from the outside.
＜比較例＞
非特許文献１に記載のエポキシ樹脂エアゾール（製品名かため太郎、オバナヤ・セメンテックス社製）
Comparative Example
Epoxy resin aerosol described in Non-Patent Document 1 (product name: Katametora, manufactured by Obanaya Cementex Co., Ltd.)
表１に示すような８種類のエアゾール製品を調製、試作した。 Eight types of aerosol products were prepared and prototyped, as shown in Table 1.
表１に示したエアゾール製品と比較例について、５℃での皮膜の硬化時間、容器内におけるハンドリングタイムを測定し、比較し結果を表２に示した。 The film curing time at 5°C and handling time in the container were measured and compared for the aerosol products shown in Table 1 and the comparative examples, and the results are shown in Table 2.
※2: 比較品は一液型のエポキシ樹脂のため、エアゾール容器内で硬化することはない。
*2: The comparison product is a one-component epoxy resin, so it does not harden inside the aerosol container.
樹脂皮膜の硬化時間は前記の方法により測定した。 The curing time of the resin film was measured using the method described above.
容器内でのハンドリングタイムは、内容器を開封して外容器内で２つの液剤を混合開始したときから時間計測を行い、３０分毎にエアゾールを噴射し、噴射ができなくなる直前までの時間をハンドリングタイムとした。 The handling time inside the container was measured from the time when the inner container was opened and mixing of the two liquids began inside the outer container. The aerosol was sprayed every 30 minutes, and the handling time was the time just before spraying became impossible.
本発明のエアゾール（実施例）では、内容器を開封した後に混合して、エアゾール噴射が可能であった。また好ましい実施例では特に、樹脂皮膜の硬化が速いにもかかわらず、エアゾール缶内における硬化時間が長いため、長時間のハンドリングタイムが確保され、かつ噴射状況も良好であることが確認できた。 With the aerosol of the present invention (Example), it was possible to mix the ingredients after opening the inner container and spray the aerosol. In particular, in the preferred Example, although the resin film hardens quickly, the hardening time in the aerosol can is long, ensuring a long handling time and confirming good spray conditions.
本発明のエアゾール製品によれば、簡便に構造物表面に樹脂皮膜を形成可能で、皮膜の硬化時間が早く、かつハンドリングタイムが長い使用が可能な表面保護が可能であり、構造物点検時の簡易的な応急対策が可能である。 The aerosol product of the present invention makes it possible to easily form a resin film on the surface of a structure, and the film hardens quickly, providing surface protection that can be used with long handling times, and allowing for simple emergency measures when inspecting a structure.
Claims (6)
前記外容器から分離され、かつ第二の液剤を封入する内容器と、
前記内容器を外部から開封することで前記混合物と前記第二の液剤との混合を可能とする機構と
を含む携行用エアゾール容器であって、
前記第一の液剤と前記第二の液剤がそれぞれ、２液型反応硬化性液状樹脂の各成分に相当し、
前記第一の液剤及び前記第二の液剤の体積を１００とするときの前記噴射剤の体積の比率が、１００に対して６５～２３０の範囲であり、
前記２液型反応硬化性液状樹脂が（メタ）アクリル酸エステル類を主成分とする２液主剤型反応硬化性液状樹脂であり、
前記第一の液剤又は前記第二の液剤のうちの片方に少なくとも（メタ）アクリル酸エステル類及びラジカル源を含有し、もう片方に少なくとも（メタ）アクリル酸エステル類及び前記ラジカル源と反応しラジカルを発生させることができる還元剤を含有する
ことを特徴とする携行用エアゾール容器。 an outer container enclosing a mixture of the first liquid agent and a liquid propellant;
an inner container separated from the outer container and enclosing a second liquid agent;
A portable aerosol container including a mechanism for allowing the mixture and the second liquid agent to be mixed by opening the inner container from the outside,
The first liquid agent and the second liquid agent each correspond to a component of a two-part reactive curable liquid resin,
a ratio of the volume of the propellant to the volume of the first liquid preparation and the volume of the second liquid preparation is in the range of 65 to 230 per 100;
the two-component reactive curable liquid resin is a two-component base reactive curable liquid resin containing (meth)acrylic acid esters as a main component,
A portable aerosol container, characterized in that one of the first liquid formulation or the second liquid formulation contains at least (meth)acrylic acid esters and a radical source, and the other liquid formulation contains at least (meth)acrylic acid esters and a reducing agent capable of reacting with the radical source to generate radicals.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000319550A (en) | 1999-05-14 | 2000-11-21 | Soft 99 Corporation:Kk | Two pack mixing type urethane aerosol |
| JP2001253484A (en) | 2000-02-04 | 2001-09-18 | L'oreal Sa | Dispenser for storing two components and selectively dispensing either one of two components or component mixture and its use |
| JP2004075819A (en) | 2002-08-15 | 2004-03-11 | Denki Kagaku Kogyo Kk | Lightweight acrylic curable composition |
| JP2009106813A (en) | 2007-10-26 | 2009-05-21 | Toyo Aerosol Ind Co Ltd | Aerosol apparatus for mixing two or more liquids |
| JP2011168440A (en) | 2010-02-18 | 2011-09-01 | Denki Kagaku Kogyo Kk | Method of protecting surface of concrete structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60158073A (en) * | 1984-01-26 | 1985-08-19 | 株式会社柏化学工業 | Vessel for mixing type aerosol |
| JPH034374Y2 (en) * | 1985-08-08 | 1991-02-05 |
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2019
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000319550A (en) | 1999-05-14 | 2000-11-21 | Soft 99 Corporation:Kk | Two pack mixing type urethane aerosol |
| JP2001253484A (en) | 2000-02-04 | 2001-09-18 | L'oreal Sa | Dispenser for storing two components and selectively dispensing either one of two components or component mixture and its use |
| JP2004075819A (en) | 2002-08-15 | 2004-03-11 | Denki Kagaku Kogyo Kk | Lightweight acrylic curable composition |
| JP2009106813A (en) | 2007-10-26 | 2009-05-21 | Toyo Aerosol Ind Co Ltd | Aerosol apparatus for mixing two or more liquids |
| JP2011168440A (en) | 2010-02-18 | 2011-09-01 | Denki Kagaku Kogyo Kk | Method of protecting surface of concrete structure |
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| JP2024050803A (en) | 2024-04-10 |
| JP2020186029A (en) | 2020-11-19 |
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