JP2014015500A - Corrosion protective covering material - Google Patents
Corrosion protective covering material Download PDFInfo
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Abstract
Description
本発明は、下水処理の工程で排出される汚泥を焼却した焼却灰を有効に利用した防食被覆材に関する。 The present invention relates to an anticorrosion coating material that effectively uses incinerated ash obtained by incinerating sludge discharged in a sewage treatment process.
従来より下水処理の工程で排出される汚泥を焼却した焼却灰（以下、単に焼却灰という。）を有効に利用する研究が盛んに行われており、その１つに、焼却灰を耐食性樹脂成分に充填材として添加した防食被覆材が提案されている（例えば、特許文献１参照）。
特許文献１に記載された防食被覆材は、エポキシ樹脂と硬化剤を混合した耐食性樹脂成分に充填材として焼却灰が、耐食性樹脂成分と焼却灰との混合重量比が４：６〜７：３の範囲で添加されている。
Research has been actively conducted to effectively use incineration ash (hereinafter simply referred to as incineration ash) incinerated sludge discharged in the sewage treatment process, and one of them is the corrosion-resistant resin component. An anticorrosion coating material added as a filler has been proposed (for example, see Patent Document 1).
The anticorrosion coating material described in Patent Document 1 has an incineration ash as a filler in a corrosion-resistant resin component in which an epoxy resin and a curing agent are mixed, and a mixing weight ratio of the corrosion-resistant resin component and the incineration ash is 4: 6 to 7: 3. It is added in the range.
特許文献１に記載された焼却灰を耐食性樹脂成分に充填材として添加した防食被覆材は、エポキシ樹脂と硬化剤を混合した耐食性樹脂成分に充填材として焼却灰が、耐食性樹脂成分と焼却灰との混合重量比が４：６〜７：３の範囲で添加されたものとなっている。
このような防食被覆材を用いた作業現場では、エポキシ樹脂と硬化剤とは別個に用意され、作業現場で混合される。特許文献１に記載された防食被覆材では、作業現場でエポキシ樹脂と硬化剤を混合し、混合した耐食性樹脂成分に更に焼却灰を混合して防食被覆材とすることになるが、このような作業を現場で行うことが困難な場合があり、予めエポキシ樹脂及び／又は硬化剤に焼却灰を混合しておき、焼却灰を混合したエポキシ樹脂と硬化剤を作業現場で混合して防食被覆材とすることが望まれる。
この場合、特許文献１に記載された防食被覆材は、エポキシ樹脂と硬化剤を混合した耐食性樹脂成分と焼却灰との混合重量比が開示されているだけであって、エポキシ樹脂と硬化剤に別個に焼却灰を混合することについては一切開示されていない。
The anticorrosion coating material in which the incineration ash described in Patent Document 1 is added to the corrosion-resistant resin component as a filler, the incineration ash as a filler to the corrosion-resistant resin component in which an epoxy resin and a curing agent are mixed, the corrosion-resistant resin component and the incineration ash The mixing weight ratio is from 4: 6 to 7: 3.
In a work site using such an anticorrosion coating material, the epoxy resin and the curing agent are prepared separately and mixed at the work site. In the anticorrosion coating material described in Patent Document 1, an epoxy resin and a curing agent are mixed at the work site, and incinerated ash is further mixed with the mixed corrosion-resistant resin component to form an anticorrosion coating material. It may be difficult to perform work on site, mix incineration ash with epoxy resin and / or curing agent in advance, mix epoxy resin mixed with incineration ash and curing agent at work site to prevent corrosion. Is desired.
In this case, the anticorrosion coating material described in Patent Document 1 only discloses the mixing weight ratio of the corrosion-resistant resin component in which the epoxy resin and the curing agent are mixed and the incineration ash, and the epoxy resin and the curing agent are disclosed. There is no disclosure of mixing incineration ash separately.
本発明者等は、エポキシ樹脂と硬化剤にそれぞれ焼却灰を添加し、焼却灰を添加したエポキシ樹脂と硬化剤を混合して防食被覆材を得ることを試み、試験研究の結果、エポキシ樹脂と硬化剤に効果的に且つ大量の焼却灰の使用をできる配合比率を見出し、本発明を完成するに至った。 The inventors of the present invention added incineration ash to the epoxy resin and the curing agent, respectively, and tried to obtain an anticorrosion coating material by mixing the epoxy resin to which the incineration ash was added and the curing agent. The present inventors have found a blending ratio that can effectively use a large amount of incinerated ash as a curing agent and have completed the present invention.
本発明の目的は、エポキシ樹脂と硬化剤にそれぞれ焼却灰を添加することにより効果的に且つ大量の焼却灰が使用できるようにした防食被覆材を提供することにある。 An object of the present invention is to provide an anticorrosion coating material in which a large amount of incineration ash can be used effectively by adding incineration ash to an epoxy resin and a curing agent, respectively.
上記の目的を達成するために、請求項１に記載の発明は、エポキシ樹脂に充填材を添加した主剤と、アミン樹脂に充填材を添加した硬化剤とからなり、前記エポキシ樹脂に添加する充填材の一部として下水汚泥の焼却灰を添加し、また、アミン樹脂にも充填材の一部として下水汚泥の焼却灰を添加し、前記エポキシ樹脂に添加した焼却灰は主剤中１０〜３５重量％の範囲とし、また、アミン樹脂に添加した焼却灰は硬化剤中１０〜４５重量％の範囲としたことを特徴とする。 In order to achieve the above object, the invention according to claim 1 is composed of a main agent in which a filler is added to an epoxy resin and a curing agent in which a filler is added to an amine resin, and is added to the epoxy resin. Incineration ash of sewage sludge is added as part of the material, and incineration ash of sewage sludge is also added to the amine resin as part of the filler, and the incineration ash added to the epoxy resin is 10 to 35 weight in the main agent. %, And the incineration ash added to the amine resin is characterized by being in the range of 10 to 45% by weight in the curing agent.
請求項２に記載の発明は、請求項１に記載の、前記エポキシ樹脂に反応性希釈剤を主剤中２〜８重量％の範囲で添加したことを特徴とする。 The invention according to claim 2 is characterized in that a reactive diluent is added to the epoxy resin according to claim 1 in the range of 2 to 8% by weight in the main agent.
請求項３に記載の発明は、請求項１または２のいずれか１に記載の、前記アミン樹脂は、変性脂環式ポリアミンと変性脂肪族ポリアミンを混合したものであることを特徴とする。 A third aspect of the present invention is characterized in that the amine resin according to any one of the first or second aspect is a mixture of a modified alicyclic polyamine and a modified aliphatic polyamine.
請求項４に記載の発明は、請求項１乃至３のいずれか１に記載の、前記エポキシ樹脂およびアミン樹脂には、それぞれ充填材として前記焼却灰の他にフュームドシリカ、タルク、ガラスフレークが添加されていることを特徴とする。 According to a fourth aspect of the present invention, the epoxy resin and the amine resin according to any one of the first to third aspects include fumed silica, talc, and glass flake as a filler in addition to the incinerated ash. It is characterized by being added.
請求項５に記載の発明は、請求項１乃至４のいずれか１に記載の、前記主剤と前記硬化剤の混合重量比が１００：５０〜１００：６０の範囲にあることを特徴とする。 The invention according to claim 5 is characterized in that the mixing weight ratio of the main agent and the curing agent according to any one of claims 1 to 4 is in the range of 100: 50 to 100: 60.
請求項６に記載の発明は、エポキシ樹脂に充填材を添加した主剤と、アミン樹脂に充填材を添加した硬化剤を混合重量比が１００：５０〜１００：６０の範囲で混合した防食被覆材であって、前記主剤にあっては、主剤中、エポキシ樹脂が５０〜６０重量％、反応性希釈剤が２〜８重量％、充填材として、汚泥焼却灰が１０〜３５重量％、ヒュームドシリカが１〜５重量％、タルクが４〜３２重量％、ガラスフレークが２〜３重量％の範囲で混合され、また、前記硬化剤にあっては、硬化剤中、変性脂環式ポリアミンが３０〜３２重量％、変性脂肪族ポリアミンが１６〜１８重量％、充填材として、汚泥焼却灰が１０〜４５重量％、フュームドシリカが１〜４重量％、タルクが５〜３８重量％、ガラスフレークが２〜５重量％、シランカップリング剤が０〜１重量％の範囲で混合されていることを特徴とする。 The invention according to claim 6 is an anticorrosion coating material in which a main agent obtained by adding a filler to an epoxy resin and a curing agent obtained by adding a filler to an amine resin are mixed in a mixing weight ratio of 100: 50 to 100: 60. In the main agent, the epoxy resin is 50 to 60% by weight, the reactive diluent is 2 to 8% by weight, the sludge incineration ash is 10 to 35% by weight, and fumed. Silica is mixed in the range of 1 to 5% by weight, talc is 4 to 32% by weight, and glass flakes are mixed in the range of 2 to 3% by weight. In the curing agent, the modified alicyclic polyamine is contained in the curing agent. 30 to 32% by weight, modified aliphatic polyamine 16 to 18% by weight, as a filler, sludge incineration ash 10 to 45% by weight, fumed silica 1 to 4% by weight, talc 5 to 38% by weight, glass 2-5% by weight flakes, silane cup Wherein the ring material is mixed in the range of 0 to 1 wt%.
請求項１に記載の防食被覆材によれば、エポキシ樹脂に添加する充填材の一部として下水汚泥の焼却灰を添加し、また、アミン樹脂にも充填材の一部として下水汚泥の焼却灰を添加したので、エポキシ樹脂、アミン樹脂のいずれか一方にのみ添加するよりも大量に添加することが可能になり、省資源化が図れる。
そして、前記エポキシ樹脂に添加した焼却灰を主剤中１０〜３５重量％の範囲とし、また、アミン樹脂に添加した焼却灰を硬化剤中１０〜４５重量％の範囲としたので、良好な混合性が得られる。
According to the anticorrosion coating material of claim 1, sewage sludge incineration ash is added as part of the filler added to the epoxy resin, and sewage sludge incineration ash is also included in the amine resin as part of the filler. Therefore, it is possible to add a larger amount than when adding only to one of the epoxy resin and the amine resin, and resource saving can be achieved.
And since the incineration ash added to the epoxy resin is in the range of 10 to 35% by weight in the main agent, and the incineration ash added to the amine resin is in the range of 10 to 45% by weight in the curing agent, good mixing properties Is obtained.
請求項２に記載の防食被覆材によれば、請求項１に記載の、前記エポキシ樹脂に反応性希釈剤を主剤中２〜８重量％の範囲で添加したので、エポキシ樹脂の低粘度化、耐薬品性、指蝕乾燥時間に優れたものとなる。 According to the anticorrosion coating material according to claim 2, since a reactive diluent is added to the epoxy resin according to claim 1 in a range of 2 to 8% by weight in the main agent, the viscosity of the epoxy resin is reduced. It is excellent in chemical resistance and finger erosion drying time.
請求項３に記載の防食被覆材によれば、請求項１または２のいずれか１に記載の、前記アミン樹脂は、変性脂環式ポリアミンと変性脂肪族ポリアミンを混合したものであるので、変性脂環式ポリアミンの耐水性によりエポキシ樹脂特有の未反応遊離アミンが水と反応して表層が白くなる現象「アミンブラッシング」を回避することができるとともに、養生段階における湿気存在下における優れた接着性を発揮するので、湿度の高い下水環境下での作業を可能にし、また、変性脂肪族ポリアミンにより指蝕乾燥時間の短縮化を図ることができる。 According to the anticorrosion coating material according to claim 3, since the amine resin according to any one of claims 1 and 2 is a mixture of a modified alicyclic polyamine and a modified aliphatic polyamine, The water resistance of alicyclic polyamines prevents the phenomenon of “amine brushing” in which the unreacted free amine peculiar to epoxy resins reacts with water and whitens the surface layer, and excellent adhesion in the presence of moisture at the curing stage Therefore, it is possible to work in a high-humidity sewage environment, and the modified aliphatic polyamine can shorten the time to dry the absorptive teeth.
請求項４に記載の防食被覆材によれば、請求項１乃至３のいずれか１に記載の、前記エポキシ樹脂およびアミン樹脂には、それぞれ充填材として前記焼却灰の他にフュームドシリカ、タルク、ガラスフレークが添加されているので、施工性、耐薬品性に一層優れたものとなる。 According to the anticorrosion coating material according to claim 4, the epoxy resin and the amine resin according to any one of claims 1 to 3, respectively, fumed silica, talc as a filler in addition to the incinerated ash. Since glass flakes are added, the workability and chemical resistance are further improved.
請求項５に記載の防食被覆材によれば、請求項１乃至４のいずれか１に記載の、前記主剤と前記硬化剤の混合重量比が１００：５０〜１００：６０の範囲にあるので、未硬化部分や硬化剤が残り白化する白化現象の無い塗布層を得ることができる。 According to the anticorrosion coating material of claim 5, since the mixing weight ratio of the main agent and the curing agent according to any one of claims 1 to 4 is in the range of 100: 50 to 100: 60, It is possible to obtain a coating layer having no whitening phenomenon in which uncured portions and the curing agent remain and whiten.
請求項６に記載の防食被覆材によれば、大量の焼却灰を使用することができ省資源化が図れ、また耐薬品性、混合性、施工性、ダレ性に優れ、さらに湿度の高い下水環境のような湿度の高い環境下で作業を可能にすることができる。 According to the anticorrosion coating material according to claim 6, a large amount of incinerated ash can be used, resource saving can be achieved, and chemical resistance, mixing properties, workability, drooping properties are excellent, and sewage with high humidity is also available. It is possible to work in a high humidity environment such as the environment.
以下、本発明に係る防食被覆材を実施するための形態を詳細に説明する。
本発明に係る防食被覆材は、エポキシ樹脂（ビスフェノールＡ型）に充填材を添加した主剤と、主剤に混合する硬化剤とからなり、エポキシ樹脂に添加する充填材の一部として下水汚泥の焼却灰を添加し、また、硬化剤にも充填材の一部として下水汚泥の焼却灰を添加している。
Hereinafter, the form for implementing the anti-corrosion coating material which concerns on this invention is demonstrated in detail.
The anticorrosion coating material according to the present invention comprises a main agent obtained by adding a filler to an epoxy resin (bisphenol A type) and a curing agent mixed with the main agent, and incineration of sewage sludge as a part of the filler added to the epoxy resin. Ash is added, and sewage sludge incineration ash is also added to the curing agent as part of the filler.
先ず、主剤について詳細に説明する。エポキシ樹脂は主剤中５０〜６０重量％の範囲で混合される。本例では、エポキシ樹脂として、優れた耐薬品性を有するビスフェノールＡ型を使用している。
このエポキシ樹脂に添加される焼却灰は、下水処理の工程で排出される汚泥を脱水焼却し、粉砕機で粉砕して、最大粒径１００ミクロン以下、平均粒径１０〜３０ミクロンに粒度調整したものが使用される。この焼却灰を充填材の一部としてエポキシ樹脂に主剤中１０〜３５重量％の範囲で添加する。
焼却灰が主剤中３５重量％を超えるとエポキシ樹脂と焼却灰の混合が困難になる。焼却灰が主剤中１０重量％未満であると、焼却灰の使用量が少なく、満足できる省資源化が図れない。
First, the main agent will be described in detail. The epoxy resin is mixed in the range of 50 to 60% by weight in the main agent. In this example, a bisphenol A type having excellent chemical resistance is used as the epoxy resin.
The incineration ash added to this epoxy resin was dewatered and incinerated for sludge discharged in the sewage treatment process and pulverized with a pulverizer to adjust the particle size to a maximum particle size of 100 microns or less and an average particle size of 10 to 30 microns. Things are used. This incineration ash is added to the epoxy resin as a part of the filler in the range of 10 to 35% by weight in the main agent.
When the incineration ash exceeds 35% by weight in the main agent, it becomes difficult to mix the epoxy resin and the incineration ash. If the incinerated ash is less than 10% by weight in the main agent, the amount of incinerated ash used is small and satisfactory resource saving cannot be achieved.
本発明では、他の充填材として、塗布性を良くするヒュームドシリカを主剤中１〜５重量％の範囲で、耐薬品性に優れ施工性のよいタルクを主剤中４〜２０重量％の範囲で、耐薬品性に優れたガラスフレークを主剤中２〜３重量％の範囲で添加している。 In the present invention, as another filler, fumed silica that improves coatability is in the range of 1 to 5% by weight in the main agent, and talc having excellent chemical resistance and good workability is in the range of 4 to 20% by weight in the main agent. Thus, glass flakes excellent in chemical resistance are added in the range of 2 to 3% by weight in the main agent.
また、エポキシ樹脂に反応性希釈剤を主剤中２〜８重量％の範囲で添加している。反応性希釈剤はエポキシ樹脂の低粘度化させることにより作業性を良くし、耐薬品性に優れている。
反応性希釈剤を主剤中２重量％未満であると、耐薬品性が低下し、エポキシ樹脂の低粘度が不十分となって作業性が悪くなり、また、８重量％を超えると指蝕乾燥時間が延びてしまうので好ましくない。
反応性希釈剤としては、耐薬品性に優れるといった点で、クレジルグリシジルエーテルが好ましい。
Moreover, the reactive diluent is added to the epoxy resin in the range of 2 to 8% by weight in the main agent. The reactive diluent improves workability by reducing the viscosity of the epoxy resin, and is excellent in chemical resistance.
If the reactive diluent is less than 2% by weight in the main agent, the chemical resistance is lowered, the low viscosity of the epoxy resin is insufficient, and the workability is deteriorated. Since time is extended, it is not preferable.
As the reactive diluent, cresyl glycidyl ether is preferable in terms of excellent chemical resistance.
次ぎに、硬化剤について詳細に説明する。アミン樹脂は硬化剤中４６重量％〜５０重量％の範囲で混合される。本例では、アミン樹脂は、変性脂環式ポリアミンと変性脂肪族ポリアミンを混合したものからなり、硬化剤中変性脂環式ポリアミンが３０〜３２重量％、変性脂肪族ポリアミンが１６〜１８重量％の範囲で混合される。
本例のアミン樹脂の選定にあっては、湿潤環境下での作業を前提とし、耐薬品性、指蝕乾燥時間の性能、接着性、未反応遊離アミンが水と反応して表層が白くなる現象「アミンブラッシング」を考慮して選定した。試験結果により、変性脂環式ポリアミンは、優れた耐薬品性、接着性、耐アミンブラッシング性を示したが指蝕乾燥時間が長く、変性脂肪族ポリアミンは、優れた耐薬品性と指蝕乾燥時間の性能を示したが、耐アミンブラッシング性に劣ることがわかった。この試験結果を受け、変性脂環式ポリアミンと変性脂肪族ポリアミンを配合する検討を行い、試験の結果、選定目標を満足させるアミン樹脂として変性脂環式ポリアミンと変性脂肪族ポリアミンを選定し、その配合量を決定した。
Next, the curing agent will be described in detail. The amine resin is mixed in the curing agent in the range of 46% to 50% by weight. In this example, the amine resin is composed of a mixture of a modified alicyclic polyamine and a modified aliphatic polyamine, the modified alicyclic polyamine in the curing agent is 30 to 32% by weight, and the modified aliphatic polyamine is 16 to 18% by weight. In the range of
In the selection of the amine resin of this example, assuming the work in a wet environment, the chemical layer, the performance of the dryness time, adhesion, unreacted free amine reacts with water and the surface layer becomes white Selected in consideration of the phenomenon “amine brushing”. According to the test results, the modified alicyclic polyamine showed excellent chemical resistance, adhesion, and amine brushing resistance, but the dry time of finger pitting was long, and the modified aliphatic polyamine had excellent chemical resistance and dryness. Although time performance was shown, it was found to be inferior in amine brushing resistance. Based on this test result, we conducted a study to mix modified alicyclic polyamine and modified aliphatic polyamine. The blending amount was determined.
アミン樹脂に添加される焼却灰は、主剤のエポキシ樹脂に添加される焼却灰と同様に、下水処理の工程で排出される汚泥を脱水焼却し、粉砕機で粉砕して、最大粒径１００ミクロン以下、平均粒径１０〜３０ミクロンに粒度調整したものが使用される。この焼却灰を充填材の一部としてアミン樹脂に硬化剤中１０〜４５Ｄ重量％の範囲で添加する。
焼却灰が硬化剤中４５重量％を超えるとアミン樹脂と焼却灰の混合が困難になる。焼却灰が硬化剤中１０重量％未満であると、焼却灰の使用量が少なく、満足できる省資源化が図れない。
また、前記した焼却灰が主剤中３５重量％を超え且つ 焼却灰が硬化剤中４５重量％を超えると主剤と硬化剤の混合が困難になる。焼却灰が主剤中１０重量％未満で、且つ硬化剤中１０重量％未満であると、焼却灰の使用量が少なく、満足できる省資源化が図れない。
The incineration ash added to the amine resin is the same as the incineration ash added to the epoxy resin as the main agent. In the following, those having an average particle size adjusted to 10 to 30 microns are used. This incineration ash is added to the amine resin as a part of the filler in the range of 10 to 45% by weight in the curing agent.
If the incineration ash exceeds 45% by weight in the curing agent, mixing of the amine resin and the incineration ash becomes difficult. If the incineration ash is less than 10% by weight in the curing agent, the amount of incineration ash used is small and satisfactory resource saving cannot be achieved.
If the incinerated ash exceeds 35% by weight in the main agent and the incinerated ash exceeds 45% by weight in the hardener, it becomes difficult to mix the main agent and the hardener. If the incinerated ash is less than 10% by weight in the main agent and less than 10% by weight in the curing agent, the amount of incinerated ash used is small and satisfactory resource saving cannot be achieved.
本発明では、他の充填材として、塗布性を良くするヒュームドシリカを硬化剤中１〜４重量％の範囲で、耐薬品性に優れ施工性のよいタルクを硬化剤中５〜３８重量％の範囲で、耐薬品性に優れたガラスフレークを硬化剤中２〜５重量％の範囲で、さらに、湿潤面コンクリートや他の基盤への付着を改善するものとしてシランカップリング剤を硬化剤中０〜１重量％の範囲で添加している。 In the present invention, fumed silica that improves coatability as an additional filler is in the range of 1 to 4% by weight in the curing agent, and talc having excellent chemical resistance and good workability is 5 to 38% by weight in the curing agent. In the range of 2 to 5% by weight of glass flakes with excellent chemical resistance in the curing agent, and further in the curing agent a silane coupling agent to improve adhesion to wet surface concrete and other substrates It is added in the range of 0 to 1% by weight.
本例では、前記主剤と前記硬化剤を、前記主剤と前記硬化剤の混合重量比が１００：５０〜１００：６０の範囲で混合し、防食被覆材を得る。
主剤１００に対し硬化剤が５０未満であると未硬化部分が発生し、また、主剤１００に対し前記硬化剤が６０を超えると硬化剤が残り、残った硬化剤が白化するといった白化現象が発生する。
In this example, the main agent and the curing agent are mixed in a mixing weight ratio of the main agent and the curing agent in the range of 100: 50 to 100: 60 to obtain an anticorrosion coating material.
When the curing agent is less than 50 with respect to the main agent 100, an uncured portion occurs, and when the curing agent exceeds 60 with respect to the main agent 100, the curing agent remains, and the remaining curing agent is whitened. To do.
本発明の防食被覆材によれば、エポキシ樹脂に添加する充填材の一部として下水汚泥の焼却灰を添加し、また、アミン樹脂にも充填材の一部として下水汚泥の焼却灰を添加したので、エポキシ樹脂、アミン樹脂のいずれか一方にのみ添加するよりも大量に添加することが可能になり、省資源化が図れる。
そして、前記エポキシ樹脂に添加した焼却灰を主剤中１０〜３５重量％の範囲とし、また、アミン樹脂に添加した焼却灰を硬化剤中１０〜４５重量％の範囲としたので、良好な混合性が得られる。
According to the anticorrosion coating material of the present invention, incineration ash of sewage sludge is added as part of the filler to be added to the epoxy resin, and incineration ash of sewage sludge is also added to the amine resin as part of the filler. Therefore, it can be added in a larger amount than when added only to one of the epoxy resin and the amine resin, and resource saving can be achieved.
And since the incineration ash added to the epoxy resin is in the range of 10 to 35% by weight in the main agent, and the incineration ash added to the amine resin is in the range of 10 to 45% by weight in the curing agent, good mixing properties Is obtained.
また、本例では、エポキシ樹脂に反応性希釈剤を主剤中２〜８重量％の範囲で添加したので、エポキシ樹脂の低粘度化、耐薬品性、指蝕乾燥時間に優れたものとなる。
また、本例では、アミン樹脂は、変性脂環式ポリアミンと変性脂肪族ポリアミンを混合したものであるので、優れた耐薬品性、接着性、耐アミンブラッシング性、乾燥性を発揮し、湿度の高い下水環境下での作業を可能にし、また、変性脂肪族ポリアミンにより指蝕乾燥時間の短縮化を図ることができる。
また、本例では、エポキシ樹脂およびアミン樹脂には、それぞれ充填材として焼却灰の他にフュームドシリカ、タルク、ガラスフレークが添加されているので、施工性、耐薬品性に一層優れたものとなる。
また、本例では、主剤と硬化剤を、主剤と硬化剤の混合重量比が１００：５０〜１００：６０の範囲で混合するので、未硬化部分や硬化剤が残り白化する白化現象の無い塗布層を得ることができる。
Moreover, in this example, since the reactive diluent was added to the epoxy resin in the range of 2 to 8% by weight in the main agent, the epoxy resin has excellent viscosity reduction, chemical resistance, and finger-corrosion drying time.
In this example, since the amine resin is a mixture of a modified alicyclic polyamine and a modified aliphatic polyamine, it exhibits excellent chemical resistance, adhesion, amine brushing resistance, and drying properties, Work in a high sewage environment is possible, and the modified dry polyamine can shorten the dry time for finger erosion.
In addition, in this example, fumed silica, talc, and glass flakes are added to the epoxy resin and amine resin in addition to incinerated ash as fillers, respectively, so that the workability and chemical resistance are further improved. Become.
Further, in this example, the main agent and the curing agent are mixed within a mixing weight ratio of the main agent and the curing agent in the range of 100: 50 to 100: 60, so that there is no whitening phenomenon in which uncured portions and the curing agent remain and whiten. A layer can be obtained.
次ぎに、本発明の実施例及び比較例を挙げて、本発明に係る防食被覆材の特徴について例証する。但し、本発明はこれらの実施例及び比較例によって何ら制限されるものではない。
表１に示す成分を調整した主剤と硬化剤を表に示す重量混合比で混合したものを用いて、耐薬品性、混合性、施工性、ダレ性、耐アミンブラッシング性、乾燥性の試験を行い評価した。試験結果を表２に示す。
試験項目の評価方法
［耐薬品性］
試験方法〈ＪＳＷＡＳ Ｋ−１６〉
試験体（１５ｍｍ×１５ｍｍ×４３ｍｍ）を各試験材料で３片作成（２０℃、７日間養生）し、各重量を測定した。そして、各試験体を以下の試験薬に浸漬温度６０℃±２℃で５時間浸漬させた後重量を測定し、各試験体３片の試験前後の重量変化を平均し、質量変化率を算出した。
試験溶液 規格値
３０％硫酸水溶液 ±０．３％以内
４０％水酸化ナトリウム水溶液 ±０．３％以内
１０％塩化ナトリウム水溶液 ±０．３％以内
蒸留水 ±０．３％以内
評価方法
○：規格値±０．３％以内のもの ×：規格値±０．３％を超えるもの
［混合性］
試験方法
汚泥焼却灰を配合した主剤及び硬化剤を各重量比に従い配合し、混合のし易さを評価 した。
評価方法
○：混合可能 ×：混合不可
［施工性］
試験方法
試験温度２０℃において、各試験材料を鋼製コテ、ゴムヘラを用い平滑にする際の塗 布層のひび割れ及びムラの発生の有無を評価した。
評価方法
○：ひび割れおよびムラなし ×：ひび割れ及びムラが発生した
［ダレ性］
試験方法
試験温度２０℃において、各試験材料を２ｍｍ厚で鉛直面に塗布した後、ダレの発生 の有無を評価した。
評価方法
○：ダレなし ×：ダレあり
［耐アミンブラッシング性］
試験方法
各試験材料を混合した後、２０℃、湿度９０％の雰囲気下で養生させ、白化現象の発 生の有無を評価した。
評価方法
○：白化現象無し ×：白化現象あり
［乾燥性］
試験方法
試験温度２０℃において、各試験材料を約３００μｍ塗布し、指で表面を触って乾燥 した時点の時間を評価した。
評価方法
○：２時間３０分以内 ×：２時間３０分を超える
Next, examples of the present invention and comparative examples will be given to illustrate the characteristics of the anticorrosion coating material according to the present invention. However, the present invention is not limited to these examples and comparative examples.
Using a mixture of the main component and curing agent prepared in Table 1 at the weight mixing ratio shown in the table, chemical resistance, mixing properties, workability, sagging properties, amine brushing resistance, and drying properties were tested. Performed and evaluated. The test results are shown in Table 2.
Test item evaluation method [chemical resistance]
Test method <JSWAS K-16>
Three specimens (15 mm × 15 mm × 43 mm) were prepared with each test material (cured for 7 days at 20 ° C.), and each weight was measured. Then, after each test specimen was immersed in the following test drugs at an immersion temperature of 60 ° C. ± 2 ° C. for 5 hours, the weight was measured, and the weight change before and after the test of each of the three test specimens was averaged to calculate the mass change rate. did.
Test solution Standard value 30% sulfuric acid aqueous solution within ± 0.3% 40% sodium hydroxide aqueous solution within ± 0.3% 10% sodium chloride aqueous solution within ± 0.3% Distilled water within ± 0.3% Evaluation method ○: Standard Value within ± 0.3% ×: Over standard value ± 0.3% [Mixability]
Test method The main agent and the curing agent blended with sludge incineration ash were blended according to each weight ratio, and the ease of mixing was evaluated.
Evaluation method ○: Can be mixed ×: Cannot be mixed [Construction]
Test Method At a test temperature of 20 ° C., the presence or absence of cracks and unevenness in the coating layer when each test material was smoothed using a steel trowel and a rubber spatula was evaluated.
Evaluation method ○: No cracks and unevenness ×: Cracks and unevenness [sagging]
Test Method At a test temperature of 20 ° C., each test material was applied to a vertical surface with a thickness of 2 mm, and the presence or absence of sagging was evaluated.
Evaluation method ○: No sagging ×: Sagging [Amine brushing resistance]
Test Method Each test material was mixed and then cured in an atmosphere of 20 ° C. and a humidity of 90% to evaluate whether or not whitening occurred.
Evaluation method ○: No whitening phenomenon ×: Whitening phenomenon [Drying]
Test Method At a test temperature of 20 ° C., about 300 μm of each test material was applied, and the time when the surface was dried with a finger was evaluated.
Evaluation method ○: Within 2 hours 30 minutes ×: Over 2 hours 30 minutes
［実施例・比較例］
［試験結果］
［実施例・比較例］
Claims (6)
前記主剤にあっては、主剤中、エポキシ樹脂が５０〜６０重量％、反応性希釈剤が２〜８重量％、充填材として、汚泥焼却灰が１０〜３５重量％、ヒュームドシリカが１〜５重量％、タルクが４〜３２重量％、ガラスフレークが２〜３重量％の範囲で混合され、
また、前記硬化剤にあっては、硬化剤中、変性脂環式ポリアミンが３０〜３２重量％、変性脂肪族ポリアミンが１６〜１８重量％、充填材として、汚泥焼却灰が１０〜４５重量％、フュームドシリカが１〜４重量％、タルクが５〜３８重量％、ガラスフレークが２〜５重量％、シランカップリング剤が０〜１重量％の範囲で混合されていることを特徴とする防食被覆材。 An anti-corrosion coating material in which a mixing weight ratio of a main agent obtained by adding a filler to an epoxy resin and a curing agent obtained by adding a filler to an amine resin is within a range of 100: 50 to 100: 60,
In the main agent, the epoxy resin is 50-60% by weight, the reactive diluent is 2-8% by weight, the sludge incineration ash is 10-35% by weight, and the fumed silica is 1-1 in the main agent. 5 wt%, talc 4 to 32 wt%, glass flakes 2 to 3 wt% mixed,
In the curing agent, the modified alicyclic polyamine is 30 to 32% by weight, the modified aliphatic polyamine is 16 to 18% by weight, and the sludge incineration ash is 10 to 45% by weight as a filler. 1 to 4% by weight of fumed silica, 5 to 38% by weight of talc, 2 to 5% by weight of glass flakes, and 0 to 1% by weight of a silane coupling agent. Anticorrosion coating.
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