JP2009227744A - Rust preventing composition and rust preventing treatment method using the same - Google Patents
Rust preventing composition and rust preventing treatment method using the same Download PDFInfo
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本発明は、加温型チクソ性付与剤を含有する防錆組成物、及びこれを用いた防錆処理方法に関する。 The present invention relates to a rust preventive composition containing a warming thixotropic agent and a rust preventive treatment method using the same.
従来から、冬季道路の凍結防止に、塩化カルシウムや塩化ナトリウム等の凍結防止剤が散布されることがある。これらの凍結防止剤は、散布されると粉末状あるいは水溶液となって車体の裏側に付着し、錆の原因となる。このため、予め車体の裏側等に防錆処理を施す等の防錆対策が採られている。 Conventionally, antifreezing agents such as calcium chloride and sodium chloride are sometimes sprayed to prevent freezing on winter roads. When sprayed, these antifreeze agents form a powder or aqueous solution and adhere to the back side of the vehicle body, causing rust. For this reason, rust prevention measures such as applying a rust prevention treatment to the back side of the vehicle body in advance are taken.
ところで、日米欧を中心に自動車の防錆性能に関する基準が近年ますます厳しさを増している。例えば、２０００年には、欧州において、５年間外観錆が無いこと及び１０年間穴あき錆が無いことが要求されている。加えて、消費者団体からは、これらの基準を超える防錆性能が期待されており、特に欧州市場では防錆保証期間を１２年とする自動車も増えてきている。従って、従来の防錆処理のさらなる改善により、自動車防錆性能の向上及び長寿命化が求められている。 By the way, in recent years, standards for rust prevention performance of automobiles, mainly in Japan, the United States and Europe, have become increasingly severe. For example, in 2000, it is required in Europe that there is no external rust for 5 years and no perforated rust for 10 years. In addition, anti-corrosion performance exceeding these standards is expected from consumer groups, and in particular, in the European market, automobiles with an anti-rust guarantee period of 12 years are increasing. Therefore, further improvement of conventional rust prevention treatment is demanded to improve automobile rust prevention performance and extend the life.
防錆処理は、車体の部位や構造に応じて様々な手法が採用されている。具体的には、防錆塗装剤の塗布、鋼板素材の高防錆化（例えば合金化亜鉛めっき鋼板）、防錆性能を有するシーラーやワックスの塗布等が挙げられる。 Various methods are employed for the rust prevention treatment depending on the body part and structure. Specifically, application of a rust preventive coating agent, high rust prevention of a steel plate material (for example, alloyed galvanized steel plate), application of a sealer or wax having antirust performance, and the like can be mentioned.
これら防錆処理方法のうち、防錆組成物は、必要な任意の部位にスプレー塗装等の方法で塗布しやすく、また厚膜化が可能なために防錆性能が長期に保持され、且つ材料・処理のコスト面でも優れている。 Of these anti-corrosion treatment methods, the anti-rust composition is easy to apply to any necessary site by spray coating or the like, and since it can be thickened, the anti-rust performance is maintained for a long time, and the material・ Excellent processing cost.
一方、自動車車体は、軽量性と安全性とを両立させるために、年々複雑化している。その一つが板合わせ部であるが、複雑な構造のために、粘度の高い防錆組成物では浸透が不十分となり、防錆処理が非常に困難になってきている。凍結防止剤等が原因の塩水が上記板合わせ部に浸入して保持された場合にあっては、錆発生の原因となることから、防錆組成物を充分に浸透させ、高い防錆性能を発現させる必要があった。 On the other hand, automobile bodies are becoming more and more complex year by year in order to achieve both lightness and safety. One of them is the plate joining part, but due to its complicated structure, the high-viscosity rust-preventing composition is insufficiently penetrated, making rust-proofing treatment very difficult. When salt water caused by anti-freezing agents, etc. enters and holds the above-mentioned plate joints, it will cause rust, so the rust preventive composition will fully penetrate and high rust prevention performance will be achieved. It was necessary to express.
しかしながら、防錆組成物の浸透性を確保するために、粘度を低くしすぎると垂れが発生しやすくなり、塗膜が保持されにくく、自動車車体や作業場を汚染する原因となる。また、今日では環境への配慮から、低ＶＯＣ型の処理剤を用いることが求められており、溶剤型の処理剤に比して粘度が上昇しやすい点にも対応する必要がある。 However, if the viscosity is too low in order to ensure the permeability of the rust-preventing composition, dripping is likely to occur, the coating film is difficult to be retained, and this causes the automobile body and the workplace to be contaminated. In addition, today, in consideration of the environment, it is required to use a low-VOC type treatment agent, and it is necessary to cope with the point that the viscosity is likely to increase as compared with a solvent-type treatment agent.
例えば、塗布時に、防錆組成物の狭隘部への浸透性を高めるために加温により粘度を下げるとともに、塗布後は冷却により粘度を上げることにより、防錆組成物が垂れ落ちることを抑制できる防錆処理方法が開示されている（特許文献１、２参照）。 For example, at the time of application, the viscosity of the rust preventive composition can be prevented from dripping by lowering the viscosity by heating and increasing the viscosity by cooling to increase the permeability of the rust preventive composition to the narrow part. A rust prevention treatment method is disclosed (see Patent Documents 1 and 2).
また、低有機溶剤の防錆組成物でありながら、低粘性材料からなることで粘度上昇を抑え、塗布作業性に優れる防錆組成物が開示されている（特許文献３、４参照）。
しかしながら、特許文献１、２に記載の技術によれば、防錆組成物を加温した状態で塗布するため、防錆被膜が形成されにくいうえ垂れやすい。さらに、冷却後の粘度上昇が十分ではないため、輸送や保管時に高温となった場合には、防錆被膜が垂れるおそれがある。 However, according to the techniques described in Patent Documents 1 and 2, since the rust preventive composition is applied in a heated state, the rust preventive film is difficult to be formed and the rust preventive composition is likely to sag. Furthermore, since the viscosity increase after cooling is not sufficient, the rust preventive film may sag when the temperature becomes high during transportation or storage.
また、特許文献３、４に記載の防錆組成物は、狭隘部の浸透性は高いが、塗布時、塗布後の粘度が低すぎて、垂れが発生してしまう場合がある。垂れの発生は、作業時において作業場の汚染原因となり、また、塗布後においては、例えば真夏時等の高温多湿環境下に曝された場合に自動車ボディの汚染原因ともなる。 Moreover, although the rust preventive composition of patent documents 3 and 4 has high permeability of a narrow part, the viscosity after application | coating is too low at the time of application | coating, and dripping may generate | occur | produce. The occurrence of sagging causes contamination of the workplace at the time of work, and after application, for example, when exposed to a high-temperature and high-humidity environment such as midsummer, it also causes contamination of the automobile body.
本発明は、上記課題を解決するためになされたものであって、その目的は、塗布時の垂れ防止、加温による浸透性の向上、及び加温後の冷却による大幅な粘度上昇を実現可能な防錆組成物、及びこれを用いた防錆処理方法を提供することにある。 The present invention has been made to solve the above-mentioned problems, and its purpose is to prevent dripping at the time of coating, to improve the permeability by heating, and to achieve a significant increase in viscosity by cooling after heating. An object of the present invention is to provide a rust preventive composition and a rust preventive treatment method using the same.
本発明者らは、上記課題を解決するために鋭意研究を重ねた。その結果、ワックス類、流動パラフィン、及び硬化油を含有する低ＶＯＣ型防錆組成物に、脂肪酸アミドからなる加温型チクソ性付与剤をさらに含有させることにより、上記課題を解決できることを見出し、本発明を完成するに至った。より具体的には、本発明は以下のものを提供する。 The inventors of the present invention have made extensive studies to solve the above problems. As a result, the low VOC type rust preventive composition containing waxes, liquid paraffin, and hardened oil has been found to be able to solve the above problems by further containing a warming thixotropic agent comprising a fatty acid amide, The present invention has been completed. More specifically, the present invention provides the following.
請求項１記載の防錆組成物は、ワックス類と、流動パラフィンと、硬化油と、を含有する防錆組成物であって、脂肪酸アミドからなる加温型チクソ性付与剤をさらに含有することを特徴とする。 The rust preventive composition according to claim 1 is a rust preventive composition containing waxes, liquid paraffin, and hardened oil, and further contains a warming thixotropic agent comprising a fatty acid amide. It is characterized by.
請求項１記載の発明によれば、脂肪酸アミドからなる加温型チクソ性付与剤を用いることで、添加以外にも加温により粘度をコントロールすることができる。このため、浸透性の確保と流出防止の双方を適宜実現しうる。具体的には、図１に示すように、塗布時の初期粘度を上げ、塗布直後の垂れを抑制できる。また、浸透工程では、加温により防錆被膜の粘度が大きく低下するため、狭隘部へ防錆組成物を浸透させることができる。そして、狭隘部へ浸透させた後、降温すると防錆被膜の粘度が加温前よりも大幅に向上する。防錆組成物を一定温度以上まで加温すると、その熱エネルギーによりワックス類の結晶構造が転移し、防錆組成物は冷却後網目構造を形成するためと推測される。降温後の防錆被膜の粘度が高いので、例えば、船での輸送等において、防錆被膜が高温環境下に曝されても防錆被膜が流出せずに維持される。 According to invention of Claim 1, a viscosity can be controlled by heating other than addition by using the heating type thixotropy imparting agent which consists of fatty acid amide. For this reason, both securing of permeability and prevention of outflow can be realized as appropriate. Specifically, as shown in FIG. 1, it is possible to increase the initial viscosity at the time of application and suppress dripping immediately after application. Further, in the infiltration step, the viscosity of the anticorrosive film is greatly reduced by heating, so that the antirust composition can be infiltrated into the narrow portion. And after making it penetrate | infiltrate into a narrow part, when the temperature falls, the viscosity of a rust preventive film will improve significantly rather than before heating. When the rust preventive composition is heated to a certain temperature or higher, the crystal structure of the wax is transferred by the heat energy, and it is assumed that the rust preventive composition forms a network structure after cooling. Since the viscosity of the rust-preventive coating after the temperature drop is high, the rust-preventive coating is maintained without flowing out even when the rust-preventive coating is exposed to a high temperature environment, for example, in transportation by ship.
請求項２記載の防錆組成物は、請求項１記載の防錆組成物において、前記加温型チクソ性付与剤が、脂肪酸とポリアルキレンポリアミンとを反応させて得られる脂肪酸アミドであることを特徴とする。 The rust preventive composition according to claim 2 is the rust preventive composition according to claim 1, wherein the warming thixotropic agent is a fatty acid amide obtained by reacting a fatty acid with a polyalkylene polyamine. Features.
請求項２記載の発明によれば、加温型チクソ性付与剤として上記のような材料を用いることにより、少ない添加量で素早い加温反応が得られる。その結果、加温型チクソ性付与剤の添加による防錆被膜の防錆性能の低下を抑制できる上、短時間で粘度調整が可能で垂れも発生しにくくなる。 According to the second aspect of the present invention, by using the above-described material as the warming thixotropy imparting agent, a quick warming reaction can be obtained with a small addition amount. As a result, it is possible to suppress a decrease in the rust prevention performance of the rust preventive film due to the addition of the warming thixotropic agent, and it is possible to adjust the viscosity in a short time and to prevent dripping.
請求項３記載の防錆組成物は、請求項１又は２記載の防錆組成物において、前記防錆組成物中における前記加温型チクソ性付与剤の含有量が、２質量％〜５質量％であることを特徴とする。 The rust preventive composition according to claim 3 is the rust preventive composition according to claim 1 or 2, wherein the content of the warming thixotropic agent in the rust preventive composition is 2% by mass to 5% by mass. %.
請求項３記載の発明によれば、加温型チクソ性付与剤の含有量が上記範囲にあるので、加温時に充分粘度が低下し、より狭隘部へ防錆被膜を浸透させやすくなる。また、加温型チクソ性付与剤の含有量が上記範囲にあれば、粘度が安定し、塗布条件も安定する。さらに、防錆被膜の強度も向上し、防錆性能が向上する。 According to invention of Claim 3, since content of a warming type thixotropy imparting agent exists in the said range, a viscosity falls sufficiently at the time of heating, and it becomes easy to penetrate | invade a rust preventive film to a narrow part more. Moreover, if content of a warming type thixotropy imparting agent exists in the said range, a viscosity will be stabilized and application | coating conditions will also be stabilized. Furthermore, the strength of the rust-proof coating is improved, and the rust-proof performance is improved.
請求項４記載の防錆組成物は、請求項１から３いずれか記載の防錆組成物において、前記硬化油が、乾性油であることを特徴とする。 The rust preventive composition according to claim 4 is characterized in that, in the rust preventive composition according to any one of claims 1 to 3, the hardened oil is a dry oil.
請求項４の発明によれば、防錆被膜に充分な乾燥性を付与でき、防錆組成物の粘度調整が容易で作業性も良い。 According to invention of Claim 4, sufficient dryability can be provided to a rust preventive film, the viscosity adjustment of a rust preventive composition is easy, and workability | operativity is also good.
請求項５記載の防錆処理方法は、車両部品の防錆処理方法であって、請求項１から４いずれか記載の防錆組成物を前記車両部品に塗布して防錆被膜を形成する第１工程と、前記第１工程後の車両部品を加温することにより、前記防錆被膜の粘度を低下させて浸透性を向上させる第２工程と、前記第２工程後の車両部品を冷却することにより、前記防錆被膜の粘度を上昇させて垂れ性を向上させる第３工程と、を有することを特徴とする。 A rust preventive treatment method according to claim 5 is a rust preventive treatment method for vehicle parts, wherein the rust preventive composition according to any one of claims 1 to 4 is applied to the vehicle parts to form a rust preventive film. 1 step, the 2nd process which lowers the viscosity of the rust preventive film by heating the vehicle part after the 1st process, and improves the permeability, and the vehicle part after the 2nd process is cooled Thus, the method has a third step of increasing the viscosity of the rust-proof coating to improve the sagging property.
請求項５記載の発明によれば、防錆組成物は、加温により粘度が下がるため、塗布された防錆組成物の板合わせ部等への浸透性が高い。また、加温を終了させ放置（自然冷却）すると塗布時よりも粘度が大幅に上昇する。 According to the invention described in claim 5, since the viscosity of the rust preventive composition is lowered by heating, the permeability of the applied rust preventive composition to the plate mating portion or the like is high. In addition, when heating is finished and left (natural cooling), the viscosity is significantly increased as compared with the time of application.
請求項６記載の防錆処理方法は、請求項５記載の防錆処理方法において、前記第２工程を、車両のラッピング処理で用いられるラップ乾燥炉を利用して行うことを特徴とする防錆処理方法。 The rust prevention treatment method according to claim 6 is the rust prevention treatment method according to claim 5, wherein the second step is performed using a lap drying furnace used in a vehicle wrapping treatment. Processing method.
請求項６記載の発明によれば、本発明の防錆組成物は６０℃の加温で所望の粘度まで低下させることができるため、加温にはラップ乾燥炉を利用することができる。これを利用することで、新たな加熱設備が不要になる。 According to invention of Claim 6, since the rust preventive composition of this invention can be reduced to a desired viscosity by heating at 60 degreeC, a lap drying furnace can be utilized for heating. By utilizing this, a new heating facility becomes unnecessary.
本発明によれば、流動パラフィンと、ワックス類と、硬化油と、を含む防錆組成物に、脂肪酸アミドからなる加温型チクソ性付与剤をさらに含有させることにより、塗布時の初期粘度を上げることができるので、塗布時に自動車ボディや作業場が汚染することを抑制できる。また、本発明の防錆組成物は、５５℃〜７０℃の加温により粘度が低下するので、第２工程時に防錆組成物を浸透させることができ、狭隘部への浸透性も高い。 According to the present invention, the initial viscosity at the time of coating can be increased by further adding a warming thixotropic agent comprising a fatty acid amide to a rust-preventing composition containing liquid paraffin, waxes, and hardened oil. Since it can raise, it can suppress that a motor vehicle body and a workplace are contaminated at the time of application | coating. In addition, since the viscosity of the rust preventive composition of the present invention is reduced by heating at 55 ° C. to 70 ° C., the rust preventive composition can be permeated during the second step, and the permeability to the narrow portion is also high.
本発明の防錆組成物は、加温により狭隘部等に浸透させ、その後、降温すると加温前よりも粘度が大幅に上昇する。このため、高温環境下での輸送や長期間の使用に耐えうる防錆被膜が形成される。 When the rust preventive composition of the present invention is allowed to permeate into a narrow part or the like by heating and then the temperature is lowered, the viscosity is significantly increased as compared with that before the warming. For this reason, the antirust coating which can endure the transportation in a high temperature environment and long-term use is formed.
本発明の防錆組成物は、５５℃〜７０℃程度で、所望の粘度（狭隘部への浸透に必要な粘度）まで低下させることができる。その結果、ラップ乾燥炉を利用して、防錆組成物を狭隘部へ浸透させることができるので、新たに加熱工程や加熱設備を設ける必要がない。 The rust preventive composition of the present invention can be reduced to a desired viscosity (viscosity necessary for permeation into a narrow portion) at about 55 ° C to 70 ° C. As a result, since the rust-preventing composition can be infiltrated into the narrow portion using the lap drying furnace, there is no need to newly provide a heating process or heating equipment.
以下、本発明の一実施形態について詳細に説明するが、本発明は、以下の実施形態に何ら限定されるものではなく、本発明の目的の範囲内において、適宜変更を加えて実施することができる。 Hereinafter, an embodiment of the present invention will be described in detail. However, the present invention is not limited to the following embodiment, and may be implemented with appropriate modifications within the scope of the object of the present invention. it can.
＜防錆組成物＞
本発明は、流動パラフィンと、ワックス類と、硬化油と、を含む防錆組成物であって、脂肪酸アミドからなる加温型チクソ性付与剤をさらに含むことを特徴とする。そこで、先ず、本発明の防錆組成物について、加温型チクソ性付与剤、流動パラフィン、ワックス類、硬化油の順で説明する。
<Anti-rust composition>
The present invention is a rust-preventing composition containing liquid paraffin, waxes, and hardened oil, and further comprises a warming thixotropic agent comprising a fatty acid amide. Therefore, first, the rust preventive composition of the present invention will be described in the order of a warming thixotropic agent, liquid paraffin, waxes, and hardened oil.
［加温型チクソ性付与剤］
本発明の防錆組成物に含まれる加温型チクソ性付与剤としては、脂肪酸アミドからなり、防錆組成物に対して、加温による粘度低下の後、降温すると加温前よりも粘度が上昇する性質を付与するものであればよい。防錆組成物に上記のような加温型チクソ性付与剤を含有させることによって、防錆組成物を加温して狭隘部に浸透させた後、降温すると加温前よりも大幅に防錆被膜の粘度が上昇する。従来の防錆組成物では、防錆被膜が高温環境下に曝された際の垂れが問題となっていたが、本発明においては、この粘度上昇によって、高温環境下での輸送や長期の使用にも耐え得ることができる。
[Warming thixotropic agent]
The warming thixotropy imparting agent contained in the rust preventive composition of the present invention comprises a fatty acid amide, and the viscosity of the rust preventive composition is lower than that before warming when the temperature is lowered after the viscosity is lowered by warming. Any material that imparts an increasing property may be used. By adding a warming thixotropy imparting agent as described above to the rust-preventing composition, the rust-preventing composition is warmed and penetrated into the narrow space, and when the temperature is lowered, the rust-preventing composition is significantly more rust-proof than before the warming. The viscosity of the coating increases. In the conventional rust preventive composition, the sag when the rust preventive film is exposed to a high temperature environment has been a problem, but in the present invention, due to this increase in viscosity, transportation in a high temperature environment and long-term use Can withstand.
この粘度上昇は、上記のような加温型チクソ性付与剤を防錆組成物に添加し、防錆組成物を一定温度以上まで加温すると、その熱エネルギーによりワックス類の結晶構造が転移し、防錆組成物は冷却後網目構造を形成するためと推測される。 This increase in viscosity is caused by the addition of the above-mentioned warming thixotropy imparting agent to the rust-preventing composition, and when the rust-preventing composition is heated to a certain temperature or higher, the crystal structure of the wax is transferred by the thermal energy. It is presumed that the rust preventive composition forms a network structure after cooling.
また、従来は最終的な防錆被膜の粘度を所望の値にするために、塗布しやすい粘度を持つ防錆組成物を用いることができなかったが、加温型チクソ性付与剤の添加により、最終的な粘度を高くすることができるので、塗布時の防錆組成物の粘度を塗布に適した粘度に設定できる。 In addition, in the past, it was not possible to use a rust preventive composition having a viscosity that is easy to apply in order to obtain a desired viscosity of the final rust preventive coating, but by adding a warming thixotropic agent. Since the final viscosity can be increased, the viscosity of the rust preventive composition at the time of application can be set to a viscosity suitable for application.
このような性質を付与することができる加温型チクソ性付与剤は、脂肪酸アミドからなる。脂肪酸アミドの中でも、脂肪酸とポリアルキレンポリアミンとの反応物であれば、さらに好ましい。少ない添加量で、加温・降温による防錆組成物の粘度変化を素早く生じさせることができるため、素早い粘度調整が可能となり、垂れをさらに抑えることができる。また、少ない添加量で効果が得られるため、加温型チクソ性付与剤を添加することによる防錆被膜の性能低下も抑えることができる。 The warming thixotropic agent capable of imparting such properties comprises a fatty acid amide. Among the fatty acid amides, a reaction product of a fatty acid and a polyalkylene polyamine is more preferable. With a small addition amount, the viscosity change of the rust-preventing composition due to heating / cooling can be caused quickly, so that the viscosity can be quickly adjusted and dripping can be further suppressed. Moreover, since an effect is acquired with a small addition amount, the performance fall of the rust preventive film by adding a warming thixotropy imparting agent can also be suppressed.
防錆組成物中の加温型チクソ性付与剤の含有量は、２質量％〜５質量％であることが好ましい。より好ましくは３質量％〜４質量％である。防錆組成物中の加温型チクソ性付与剤の含有量が２質量％未満であれば、加温時の粘度低下が小さくなる傾向にあり、また、充分に加温反応しない場合があるので好ましくない。含有量が５質量％を超えると、防錆組成物の粘度が不安定になり、安定した塗布条件が得られにくく、さらに、加温時に防錆組成物の粘度が低下しにくくなる。また、防錆組成物の強度も低下し、防錆性能も低下する傾向にあるので好ましくない。 The content of the warming thixotropic agent in the rust preventive composition is preferably 2% by mass to 5% by mass. More preferably, it is 3 mass%-4 mass%. If the content of the warming thixotropy imparting agent in the rust preventive composition is less than 2% by mass, the viscosity decrease during heating tends to be small, and there is a case where the warming reaction does not sufficiently occur. It is not preferable. When the content exceeds 5% by mass, the viscosity of the rust-preventing composition becomes unstable, and it is difficult to obtain stable coating conditions, and further, the viscosity of the rust-preventing composition is difficult to decrease during heating. Moreover, since the intensity | strength of a rust prevention composition also falls and there exists a tendency for rust prevention performance to fall, it is unpreferable.
素早い粘度調整とは、加温型チクソ性付与剤を添加するにもかかわらず、従来剤と同程度に加温により急激に防錆組成物の粘度が低下し、降温により急激に防錆被膜の粘度が上昇することをいう。 Quick viscosity adjustment means that, despite the addition of a warming thixotropy-imparting agent, the viscosity of the rust-preventing composition is drastically reduced by heating to the same degree as conventional agents, and the rust-preventing coating is drastically reduced by cooling. This means that the viscosity increases.
［流動パラフィン］
本発明の防錆組成物に用いられる流動パラフィンは特に限定されず従来公知のものを用いることができる。流動パラフィンは常温では無色の液体であり、非揮発性である。本発明では流動パラフィンの含有量も特に限定されない。
[Liquid paraffin]
The liquid paraffin used for the rust preventive composition of the present invention is not particularly limited, and conventionally known paraffin can be used. Liquid paraffin is a colorless liquid at room temperature and is non-volatile. In the present invention, the content of liquid paraffin is not particularly limited.
［ワックス類］
本発明の防錆組成物に含まれるワックス類としては、天然ワックス、合成ワックスのいずれも使用することができる。本発明に用いるワックス類は、所望の粘度に応じて適宜変更することができる。
[Wax]
As waxes contained in the rust preventive composition of the present invention, either natural wax or synthetic wax can be used. The waxes used in the present invention can be appropriately changed according to the desired viscosity.
ワックス類の種類、配合量により、防錆組成物の粘度は変動する、本発明において、防錆組成物の加温前の粘度（初期粘度）は特に限定されないが、車両等に防錆組成物を塗布する塗布時に防錆組成物が垂れて、車両ボディや作業場を汚染させないようにするために、防錆組成物の塗布時の粘度は一定の水準以上であることが好ましい。しかし、防錆組成物の粘度が高すぎると、防錆組成物を車両部品等に塗布することが困難となるため、一定水準以下の粘度であることが好ましい。本発明では、防錆組成物を加温して冷却することにより粘度を最終的に上昇させることができるため、塗布時に車両部品等に塗布しやすい粘度に設定することができる。 The viscosity of the rust preventive composition varies depending on the type and blending amount of the waxes. In the present invention, the viscosity (initial viscosity) of the rust preventive composition before heating is not particularly limited. In order to prevent the rust-preventing composition from sagging during application to coat and contaminate the vehicle body and the workplace, the viscosity during application of the anti-rust composition is preferably at a certain level or higher. However, if the viscosity of the rust-preventing composition is too high, it becomes difficult to apply the rust-preventing composition to vehicle parts and the like. In this invention, since a viscosity can be finally raised by heating and cooling a rust preventive composition, it can set to the viscosity which is easy to apply | coat to a vehicle component etc. at the time of application | coating.
また、上記初期粘度を持つ防錆組成物が、加温後の降温により、上述の程度粘度が上昇すれば、塗布時には塗布しやすく、加温により狭隘部へ浸透し、降温により充分に粘度が上昇するので、高温環境下の輸送や長期使用であっても、防錆被膜の垂れが生じないので好ましい。 In addition, if the rust preventive composition having the above initial viscosity is increased in viscosity by the above-described temperature drop, it is easy to apply at the time of application, penetrates into the narrow part by heating, and the viscosity is sufficiently increased by the temperature decrease. Since it rises, even if it is transported in a high temperature environment or used for a long time, the rust preventive film does not sag, which is preferable.
上記の天然ワックスとしては、キャンデリラワックス、カルナウバワックス、ライスワックス、木ろう、ホホバ油等の植物油系ワックスや、みつろう、ラノリン、鯨ろう等の動物系ワックスや、モンタンワックス、オゾケライト、セレシン等の鉱物油系ワックスや、パラフィンワックス、マイクロクリスタリンワックス、ペトロラタム等の石油ワックスが挙げられる。 The above-mentioned natural waxes include vegetable waxes such as candelilla wax, carnauba wax, rice wax, wax wax, jojoba oil, animal waxes such as beeswax, lanolin, whale wax, montan wax, ozokerite, ceresin, etc. And petroleum oils such as paraffin wax, microcrystalline wax, and petrolatum.
さらに、上記の合成ワックスとしては、フィッシャー・トロプシュワックス、ポリエチレンワックス等の合成炭化水素、モンタンワックス誘導体、パラフィンワックス誘導体、マイクロクリスタリンワックス誘導体等の変性ワックス、硬化ひまし油、硬化ひまし油誘導体等の水素化ワックス、１２−ヒドロキシステアリン酸等の脂肪酸、ステアリン酸アミド等の酸アミド、無水フタル酸イミド等のエステル、また塩素化炭化水素、及びこれらを配合してなる配合ワックス、等が挙げられる。 Further, the synthetic wax includes synthetic hydrocarbons such as Fischer-Tropsch wax and polyethylene wax, modified waxes such as montan wax derivatives, paraffin wax derivatives and microcrystalline wax derivatives, hydrogenated waxes such as hardened castor oil and hardened castor oil derivatives. , Fatty acids such as 12-hydroxystearic acid, acid amides such as stearic acid amide, esters such as phthalic anhydride imide, chlorinated hydrocarbons, and blended waxes obtained by blending these.
これらのワックス類は単体もしくは混合して配合することができるが、使用するワックスの融点は６０℃以上１３０℃未満が好ましく、８０〜１００℃がより好ましい。この融点が６０℃より低いと、車体内面に塗布した場合、乾燥前に夏期の高温にさらされると溶解して垂れが発生してしまう。一方、この融点が１３０℃より高いと組成物の製造時に高温が必要となり実用性に劣る。具体的には、パラフィンワックス、マイクロクリスタリンワックス、ペトロラタム、ポリエチレンワックス、各種変性ワックスを単体もしくは混合して配合するのが好ましい。さらに好ましくは、マイクロクリスタリンワックスを単体もしくは混合して配合するのが好ましい。これらワックス類と上述の加温型チクソ性付与剤の組み合わせにより所望の粘度コントロールを実現できる。 These waxes can be blended alone or as a mixture, but the melting point of the wax used is preferably 60 ° C. or higher and lower than 130 ° C., more preferably 80 to 100 ° C. If this melting point is lower than 60 ° C., when applied to the inner surface of the vehicle body, it will melt and sag when exposed to high summer temperatures before drying. On the other hand, when the melting point is higher than 130 ° C., a high temperature is required during the production of the composition, which is inferior in practicality. Specifically, paraffin wax, microcrystalline wax, petrolatum, polyethylene wax, and various modified waxes are preferably blended alone or in combination. More preferably, the microcrystalline wax is blended alone or as a mixture. Desired viscosity control can be realized by a combination of these waxes and the above-mentioned warming-type thixotropic agent.
［硬化油］
本発明の防錆組成物に含まれる硬化油は特に限定されないが、その中でも、ヨウ素価１３０以上の油脂類を熱により重合させた乾性油が好ましい。具体的には、アマニ油、エノ油、桐油、麻実油、サフラワー油、オイチシカ油、イワシ油、ニシン油、ひまし油を脱水反応で共役酸にした脱水ひまし油、合成乾性油等が挙げられる。これらの中でも特に、入手が容易なアマニ油、桐油、脱水ひまし油の加熱重合油を単体もしくは混合で使用することが好ましく、加熱重合脱水ひまし油の配合量が多い方がさらにより好ましい。
[Hardened oil]
The hardened oil contained in the rust preventive composition of the present invention is not particularly limited, but among them, a dry oil obtained by polymerizing oils and fats having an iodine value of 130 or more with heat is preferable. Specific examples include linseed oil, eno oil, tung oil, hemp seed oil, safflower oil, sika deer oil, sardine oil, herring oil, castor oil, and dehydrated castor oil, synthetic drying oil, etc., which have been converted into a conjugate acid by a dehydration reaction. Among these, it is preferable to use heat-polymerized oils of linseed oil, tung oil, and dehydrated castor oil, which are easily available, alone or in combination, and it is even more preferable that the amount of heat-polymerized dehydrated castor oil is larger.
本発明においては、硬化油の配合量は組成物全体に対して５〜６０質量％の範囲であり、好ましくは、１０〜２０質量％である。配合量が５％未満では防錆組成物の被膜に充分な乾燥性が得られず、不乾性の被膜となり好ましくない。一方、この配合量が６０％を超えると防錆組成物の粘度が高くなり過ぎて作業性が悪く、均一塗布が困難である。 In this invention, the compounding quantity of hydrogenated oil is the range of 5-60 mass% with respect to the whole composition, Preferably, it is 10-20 mass%. If the blending amount is less than 5%, a sufficient drying property cannot be obtained for the coating of the rust-preventing composition, and the coating becomes non-drying. On the other hand, if the blending amount exceeds 60%, the viscosity of the rust preventive composition becomes too high, the workability is poor, and uniform coating is difficult.
［その他の添加剤］
また、本発明における防錆組成物においては、スルフォン酸塩類、カルボン酸塩類、脂肪酸エステル類、アミン塩類、酸化パラフィン塩類、酸化ワックス塩類から選ばれた防錆添加剤を上記ワックス類とともに使用してもよい。防錆添加剤の中には予め有機溶剤で希釈した添加剤もあるが、本発明に配合する防錆添加剤は揮発成分ができるだけ少ないものが好ましい。具体的には、オイルカットしたスルフォン酸塩、脂肪酸エステル類、酸化パラフィン塩類が好ましい。さらに好ましくは、オイルカットしたスルフォン酸Ｃａ塩及び脂肪酸エステル類を単体もしくは混合して配合するのが好ましい。
[Other additives]
Further, in the rust preventive composition of the present invention, a rust preventive additive selected from sulfonates, carboxylates, fatty acid esters, amine salts, oxidized paraffin salts and oxidized wax salts is used together with the above waxes. Also good. Among the rust preventive additives, there are additives previously diluted with an organic solvent. However, the rust preventive additive blended in the present invention is preferably one having as few volatile components as possible. Specifically, oil-cut sulfonates, fatty acid esters, and oxidized paraffin salts are preferred. More preferably, the oil-cut sulfonic acid Ca salt and fatty acid esters are blended alone or mixed.
本発明における防錆組成物においては、ワックス類や防錆添加剤を配合することにより被膜に撥水性を与えると同時に緻密な連続被膜を形成することにより優れた耐食性能を得ることができる。また、ワックスの結晶化作用を利用して粘度を調整することも可能になる。 In the rust preventive composition of the present invention, excellent corrosion resistance can be obtained by blending waxes and rust preventive additives to impart water repellency to the coating and at the same time forming a dense continuous coating. It is also possible to adjust the viscosity by utilizing the crystallization action of the wax.
本発明における防錆組成物への防錆添加剤類の配合量は、組成物全体に対して１〜５０質量％であり、好ましくは、１０〜３０質量％である。なお、結晶性の高い物を配合する場合には比較的少ない配合量が好ましく、逆に結晶性の低い物を配合する場合には多く配合することが好ましい。この配合量が１質量％未満では充分な耐食性能が得られない。一方、この配合量が５０質量％を超えると、粘度が高くなり過ぎて作業性が悪く、均一塗布が困難である。 The compounding quantity of the antirust additive to the antirust composition in this invention is 1-50 mass% with respect to the whole composition, Preferably, it is 10-30 mass%. In addition, when blending a product with high crystallinity, a relatively small blending amount is preferable. Conversely, when blending a compound with low crystallinity, it is preferable to blend a large amount. If the blending amount is less than 1% by mass, sufficient corrosion resistance cannot be obtained. On the other hand, if the blending amount exceeds 50% by mass, the viscosity becomes too high, workability is poor, and uniform coating is difficult.
本発明においては、上記の硬化油を含有することが必須であるが、これに加えて配合し得るヨウ素価１３０以上の油脂類から選ばれた乾性油としては、具体的には、アマニ油、エノ油、桐油、麻実油、サフラワー油、オイチシカ油、イワシ油、ニシン油、ひまし油を脱水反応で共役酸にした脱水ひまし油、合成乾性油等が挙げられる。これらの中でも特に、入手が容易なアマニ油、桐油、脱水ひまし油を単体もしくは混合で使用することが好ましく、脱水ひまし油の配合量が多い方がさらにより好ましい。 In the present invention, it is essential to contain the above hardened oil, but in addition to this, as a dry oil selected from oils and fats having an iodine value of 130 or more that can be blended, specifically, linseed oil, Eno oil, tung oil, hemp seed oil, safflower oil, jute oil, sardine oil, herring oil, dehydrated castor oil obtained by converting castor oil into conjugate acid by dehydration reaction, synthetic drying oil, and the like. Among these, it is preferable to use linseed oil, tung oil, and dehydrated castor oil, which are easily available, alone or in combination, and it is even more preferable that the amount of dehydrated castor oil is large.
本発明においては、乾性油の配合量は組成物全体に対して６０質量％以下であり、好ましくは１０質量％以下であり、より好ましくは５質量％以下である。配合量が６０％を超えると防錆組成物の乾燥後の被膜が硬過ぎて、防錆組成物の利点である柔軟被膜による優れた耐食性能が得られない。 In this invention, the compounding quantity of drying oil is 60 mass% or less with respect to the whole composition, Preferably it is 10 mass% or less, More preferably, it is 5 mass% or less. If the blending amount exceeds 60%, the film after drying of the rust preventive composition is too hard, and the excellent corrosion resistance performance due to the flexible film that is an advantage of the rust preventive composition cannot be obtained.
本発明の防錆組成物は加温型チクソ性付与剤を含有するが、さらに、本発明の防錆組成物には、要求品質を満足する範囲内で、被膜硬さを調整したり、チクソトロピー性を持たせて垂れ性を改善したりする目的で、顔料やフィラー類を配合することもできる。配合する顔料としては、弁柄、亜鉛末、リン酸亜鉛等が挙げられるが、その他従来公知の各種顔料を使用することもできる。また、フィラーとしては、炭酸カルシウム類、カオリンクレー類、タルク類、マイカ類、ベントナイト類、その他従来公知の各種体質顔料が挙げられる。さらに、必要に応じて、カーボンブラック、酸化チタン等の着色顔料を適当量添加して任意の色に着色することが可能である。 Although the rust preventive composition of the present invention contains a warming thixotropic agent, the rust preventive composition of the present invention further adjusts the hardness of the coating within the range satisfying the required quality, and the thixotropy. Pigments and fillers can also be blended for the purpose of improving the sagging property. Examples of the pigment to be blended include petals, zinc powder, zinc phosphate, and the like, and various other conventionally known pigments can also be used. Examples of the filler include calcium carbonates, kaolin clays, talcs, mica, bentonites, and various other conventionally known extender pigments. Furthermore, if necessary, it is possible to add an appropriate amount of a color pigment such as carbon black or titanium oxide to color it in an arbitrary color.
また、本発明の防錆組成物には、乾燥速度を向上及び調整する目的で硬化促進剤や、表面硬化を防止する目的で皮張り防止剤を添加して使用することもできる。硬化促進剤としては、ナフテン酸コバルトやナフテン酸マンガン、その他従来公知の各種添加剤が挙げられる。また、皮張り防止剤としては、ブチル化ヒドロキシトルエン、その他従来公知の各種添加剤が挙げられる。また、本発明の防錆組成物には、酸化重合による硬化反応時に発生する臭気を低減及び抑制する目的で脱臭剤や吸着剤を添加して使用することもできる。脱臭剤及び吸着剤としては、チモールや酵素化合物、その他従来公知の各種添加剤が挙げられる。 Further, the rust preventive composition of the present invention can be used by adding a curing accelerator for the purpose of improving and adjusting the drying rate, or a skinning inhibitor for the purpose of preventing surface hardening. Examples of the curing accelerator include cobalt naphthenate, manganese naphthenate, and other conventionally known additives. In addition, examples of the anti-skinning agent include butylated hydroxytoluene and various other conventionally known additives. Moreover, a deodorizing agent and an adsorbent can also be added and used for the antirust composition of this invention in order to reduce and suppress the odor which generate | occur | produces at the time of the hardening reaction by oxidation polymerization. Examples of the deodorizer and adsorbent include thymol, enzyme compounds, and other conventionally known various additives.
＜防錆組成物の調製方法＞
本発明の防錆組成物は、上記流動パラフィン、加温型チクソ性付与剤、ワックス類、硬化油及び必要ならば任意成分を混合し、分散させることにより調製される。
<Method for preparing rust preventive composition>
The rust preventive composition of the present invention is prepared by mixing and dispersing the above-mentioned liquid paraffin, warming type thixotropic agent, waxes, hardened oil and optional components if necessary.
＜防錆処理方法＞
本発明の防錆処理方法は、本発明の防錆組成物を車両部品に塗布して防錆被膜を形成する第１工程と、第１工程後の車両部品を加温することにより、防錆被膜の粘度を低下させて浸透性を向上させる第２工程と、第２工程後の車両部品を冷却することにより、防錆被膜の粘度を上昇させて垂れ性を向上させる第３工程と、を有することを特徴とする。以下、本発明の防錆処理方法の各工程について説明する。
<Rust prevention treatment method>
The rust preventive treatment method of the present invention comprises a first step of applying a rust preventive composition of the present invention to a vehicle part to form a rust preventive film, and heating the vehicle part after the first step to prevent rust. A second step of improving the permeability by lowering the viscosity of the coating; and a third step of increasing the viscosity of the anticorrosive coating and improving the sagability by cooling the vehicle parts after the second step. It is characterized by having. Hereinafter, each process of the antirust treatment method of the present invention will be described.
［第１工程］
第１工程は本発明の防錆組成物を車両部品に塗布する工程である。ここで、「車両」とは、自動車、原動機付自転車、軽車両、トロリーバス、鉄道車両、路面電車、軍用車両、建設車両、農業車両、産業車両等のことをいい、「車両部品」とは、上記車両に含まれる部品のことをいう。塗布する範囲についても特に限定されず、車両部品の全体であっても、また、一部であってもよい。
[First step]
A 1st process is a process of apply | coating the rust preventive composition of this invention to vehicle components. Here, “vehicle” means an automobile, a motorbike, a light vehicle, a trolley bus, a railway vehicle, a tram, a military vehicle, a construction vehicle, an agricultural vehicle, an industrial vehicle, etc. This refers to parts included in the vehicle. The application range is not particularly limited, and may be the entire vehicle part or a part thereof.
本発明の防錆組成物は、特に車両の床裏、車両の足回り部品、車両の袋構造部、板合わせ部等に、好ましく用いることができる。車両の床裏、及び車両の足回り部品は、水溶液となった凍結防止剤等が付着しやすく、錆びやすい部分であり、加えて近年の車両の構造は複雑で狭い隙間にも防錆組成物を行き渡らせる必要がある。本発明の防錆組成物は、塗布時に一定の粘度を持つので、従来の防錆組成物と比較して、複雑な構造の部品であっても所望の位置に防錆組成物を容易に塗布することができ、狭隘部へも後述する第２工程で容易に浸透させることができる。板合わせ部、袋構造部については、一度侵入した塩水を保持しやすい部分であり、従来の防錆組成物では、最終的な防錆被膜に一定の粘度を付与するために、塗布時に防錆組成物を低粘度状態にしておく必要があり、充分にその隙間に防錆組成物を浸透させることはできなかったが、本発明の防錆組成物を用いることで、加温により防錆組成物の粘度を低下させて浸透させることができ、これらの狭隘部へも容易に防錆組成物を浸透させることができる。 The rust-preventing composition of the present invention can be preferably used particularly for vehicle floors, vehicle undercarriage parts, vehicle bag structure parts, plate joining parts, and the like. Vehicle floors and undercarriage parts of vehicles are easily rusted parts with anti-freezing agent etc. in aqueous solution. In addition, the structure of vehicles in recent years is complicated and rust-proofing composition even in narrow gaps Need to spread. Since the rust preventive composition of the present invention has a certain viscosity at the time of application, the rust preventive composition can be easily applied to a desired position even in parts having a complicated structure as compared with the conventional rust preventive composition. It can be easily penetrated into the narrow portion in the second step described later. The plate-matching part and the bag structure part are parts that easily retain salt water once intruded, and the conventional rust-proofing composition is rust-proof during application to give a certain viscosity to the final rust-proof coating. It was necessary to keep the composition in a low-viscosity state, and the rust-proof composition could not be sufficiently penetrated into the gap, but by using the rust-proof composition of the present invention, the rust-proof composition by heating The viscosity of the product can be lowered and infiltrated, and the rust preventive composition can be easily infiltrated into these narrow portions.
本発明の防錆組成物は、エアレススプレー、エアースプレー、等の従来公知の塗装機によるスプレー塗布、シャワー状態での流し塗り、刷毛等による直接塗布等により塗布することができる。 The rust preventive composition of the present invention can be applied by spray coating with a conventionally known coating machine such as airless spray or air spray, flow coating in a shower state, direct coating with a brush or the like.
［第２工程］
第２工程は防錆被膜の粘度を低下させて浸透性を向上させる工程である。加温の際の加熱手段は特に限定されず、加熱手段としては従来公知の方法が採用できる。本発明の防錆組成物では、６０℃程度の加温により、浸透性の向上、加温・冷却後の大幅な粘度上昇が得られることから、既存のラップ乾燥炉をそのまま利用できる。ラップ乾燥炉を利用することで新たな加熱装置が不要になり好ましい。また、ラップ乾燥と併せて加温を行えば、新たに加温工程も設ける必要がないので、容易に防錆組成物を狭隘部等へ浸透させることができる。
[Second step]
The second step is a step of improving the permeability by reducing the viscosity of the rust preventive coating. The heating means at the time of heating is not particularly limited, and a conventionally known method can be adopted as the heating means. In the rust preventive composition of the present invention, an improvement in permeability and a significant increase in viscosity after heating / cooling can be obtained by heating at about 60 ° C., so that an existing lap drying furnace can be used as it is. Use of a lap drying furnace is preferable because a new heating device is not required. Further, if heating is performed in combination with lapping, it is not necessary to newly provide a heating step, so that the rust preventive composition can be easily penetrated into the narrow portion or the like.
［第３工程］
第３工程は、車両部品を冷却することにより、防錆被膜の粘度を上昇させて垂れ性を向上させる工程である。冷却手段は特に限定されず従来公知の冷却手段を用いることができる。また、冷却は自然冷却であってもよい。冷却により第二工程の加熱前と比較して防錆組成物の粘度は大幅に上昇する。この大幅な粘度上昇によって、高温環境下での輸送や長期使用する場合であっても、防錆被膜は垂れにくい。
[Third step]
The third step is a step of increasing the viscosity of the rust preventive coating and improving the sagging property by cooling the vehicle parts. The cooling means is not particularly limited, and a conventionally known cooling means can be used. The cooling may be natural cooling. By cooling, the viscosity of the rust preventive composition is significantly increased as compared with that before heating in the second step. Due to this significant increase in viscosity, the rust-preventive coating is unlikely to sag even when transported in a high temperature environment or used for a long time.
冷却後に車両部品に粘度の向上した防錆被膜が形成される。防錆被膜の厚さは特に限定されないが、車両の床裏、車両の足回り部品、袋構造部、板合わせ部等において、長期に渡って優れた防錆性能を維持するためには、３０μｍ以上であることが好ましい。 After cooling, a rust-proof coating with improved viscosity is formed on the vehicle parts. The thickness of the rust preventive coating is not particularly limited, but in order to maintain an excellent rust preventive performance over a long period of time, such as under the floor of a vehicle, undercar parts of a vehicle, a bag structure part, and a plate joining part, 30 μm The above is preferable.
以下、本発明の実施例について説明するが、本発明は以下の実施例に限定されるものではない。 Examples of the present invention will be described below, but the present invention is not limited to the following examples.
＜防錆組成物の調製＞
表１に示す材料を表１に示す配合で、混合し、実施例の防錆組成物及び比較例の防錆組成物を得た。
<Preparation of rust preventive composition>
The materials shown in Table 1 were mixed in the composition shown in Table 1 to obtain rust preventive compositions of Examples and Comparative Examples.
加温型チクソ剤：市販のポリアルキレンポリアミン脂肪酸アミド粉末
流動パラフィン：市販の動粘度が１６ｍｍ２／ｓである流動パラフィン
ワックス：市販のマイクロクリスタレンワックス（融点８０℃、油分２ｍａｓｓ％品）
硬化油：市販の加熱重合脱水ひまし油
脱臭剤：大塚化学社製ケムキャッチＨ６０００
防錆添加剤：市販のジアルキルベンゼンスルフォン酸カルシウム塩
Warming thixotropic agent: commercially available polyalkylene polyamine fatty acid amide powder liquid paraffin: commercially available liquid paraffin wax having a kinematic viscosity of 16 mm 2 / s: commercially available microcrystalline wax (
Hardened oil: Commercially available heat-polymerized dehydrated castor oil deodorizer: Chemcatch H6000 manufactured by Otsuka Chemical Co., Ltd.
Antirust additive: Commercial dialkylbenzene sulfonate calcium salt
＜温度−粘度特性の評価＞
実施例、比較例の防錆組成物を７０℃まで加温した後、自然冷却により降温した。その際の防錆組成物の粘度を加温時、冷却時に分けて１０℃おきに測定した。測定した粘度の値を縦軸粘度、横軸温度のグラフにプロットし、実施例の温度−粘度特性を図２に、比較例の温度−粘度特性を図３に示した。なお、粘度は、５００ｍｌのビーカーに試料油を入れ加温時には湯浴で加温、冷却時には水浴で冷却して測定した。測定には、東京計器製Ｂ型又はＢＨ型回転粘度計を使用した。
<Evaluation of temperature-viscosity characteristics>
After heating the antirust composition of an Example and a comparative example to 70 degreeC, it cooled by natural cooling. The viscosity of the rust preventive composition at that time was measured every 10 ° C. during heating and during cooling. The measured viscosity values are plotted in a graph of the vertical axis viscosity and the horizontal axis temperature. The temperature-viscosity characteristics of the examples are shown in FIG. 2, and the temperature-viscosity characteristics of the comparative examples are shown in FIG. The viscosity was measured by putting sample oil in a 500 ml beaker and heating in a hot water bath when warming, and cooling in a water bath when cooling. For measurement, a B type or BH type rotational viscometer manufactured by Tokyo Keiki was used.
図２、３から分かるように、本発明の防錆組成物は、脂肪酸アミドからなるチクソ性付与剤を含むことにより、加温後、冷却すると防錆組成物の粘度が上昇することが確認された。この特性により、防錆組成物として粘度コントロールが可能で、自動車ボディの加温・冷却による浸透性確保と垂れ防止が両立できるようになった。また、一度加温した防錆組成物は冷却すると粘度が、加温前と比較して上昇するため高温環境下での輸送や長期間の使用にも垂れずに充分耐えられる。 As can be seen from FIGS. 2 and 3, the rust preventive composition of the present invention contains a thixotropic agent comprising a fatty acid amide, and it is confirmed that the viscosity of the rust preventive composition increases when cooled after heating. It was. This characteristic makes it possible to control the viscosity of the rust-preventing composition, and to achieve both penetration and prevention of dripping by heating and cooling the automobile body. Also, once the rust-preventing composition is heated, the viscosity rises as compared to that before heating, so that it can sufficiently withstand transport in a high-temperature environment and long-term use.
Claims (6)
脂肪酸アミドからなる加温型チクソ性付与剤をさらに含有することを特徴とする防錆組成物。 A rust preventive composition containing waxes, liquid paraffin, and hardened oil,
A rust preventive composition further comprising a warming thixotropic agent comprising a fatty acid amide.
請求項１から４いずれか記載の防錆組成物を前記車両部品に塗布して防錆被膜を形成する第１工程と、
前記第１工程後の車両部品を加温することにより、前記防錆被膜の粘度を低下させて浸透性を向上させる第２工程と、
前記第２工程後の車両部品を冷却することにより、前記防錆被膜の粘度を上昇させて垂れ性を向上させる第３工程と、を有することを特徴とする防錆処理方法。 A rust prevention method for vehicle parts,
A first step of applying a rust preventive composition according to any one of claims 1 to 4 to the vehicle component to form a rust preventive coating;
A second step of improving the permeability by reducing the viscosity of the anticorrosive coating by heating the vehicle parts after the first step;
And a third step of increasing the viscosity of the anticorrosive coating to improve the sagging property by cooling the vehicle parts after the second step.
前記第２工程を、車両のラッピング処理で用いられるラップ乾燥炉を利用して行うことを特徴とする防錆処理方法。 In the rust prevention processing method according to claim 5,
A rust preventive treatment method characterized in that the second step is performed using a lap drying furnace used in a vehicle wrapping treatment.
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| JP2012041563A (en) * | 2010-08-12 | 2012-03-01 | Yamauchi Corp | Anticorrosive agent |
| JP2013523922A (en) * | 2010-03-31 | 2013-06-17 | 日産自動車株式会社 | Anticorrosive wax composition containing doped polyaniline and liquid paraffin |
| US20130280543A1 (en) * | 2010-12-16 | 2013-10-24 | 3M Innovative Properties Company | Anti-corrosive compositions |
| JP2014198864A (en) * | 2013-03-29 | 2014-10-23 | トヨタ自動車株式会社 | Rust preventive composition |
| CN104178026A (en) * | 2013-05-23 | 2014-12-03 | 海安县国力化工有限公司 | Anti-rust paint |
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| US8655108B2 (en) | 2007-09-19 | 2014-02-18 | Sharp Laboratories Of America, Inc. | Adaptive image up-scaling technique |
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| JP2009537681A (en) * | 2006-05-23 | 2009-10-29 | チバ ホールディング インコーポレーテッド | Anti-corrosion composition for non-ferrous metals |
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| JP2009537681A (en) * | 2006-05-23 | 2009-10-29 | チバ ホールディング インコーポレーテッド | Anti-corrosion composition for non-ferrous metals |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2013523922A (en) * | 2010-03-31 | 2013-06-17 | 日産自動車株式会社 | Anticorrosive wax composition containing doped polyaniline and liquid paraffin |
| JP2012041563A (en) * | 2010-08-12 | 2012-03-01 | Yamauchi Corp | Anticorrosive agent |
| US20130280543A1 (en) * | 2010-12-16 | 2013-10-24 | 3M Innovative Properties Company | Anti-corrosive compositions |
| US8911542B2 (en) * | 2010-12-16 | 2014-12-16 | 3M Innovative Properties Company | Anti-corrosive compositions |
| JP2014198864A (en) * | 2013-03-29 | 2014-10-23 | トヨタ自動車株式会社 | Rust preventive composition |
| CN104178026A (en) * | 2013-05-23 | 2014-12-03 | 海安县国力化工有限公司 | Anti-rust paint |
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