JPH0617901B2 - Anti-corrosion anti-corrosion performance evaluation method for automobile coolant and radiator anti-corrosion agent and anti-corrosion anti-corrosion performance evaluation test kit used for the method - Google Patents
Anti-corrosion anti-corrosion performance evaluation method for automobile coolant and radiator anti-corrosion agent and anti-corrosion anti-corrosion performance evaluation test kit used for the methodInfo
- Publication number
- JPH0617901B2 JPH0617901B2 JP59060044A JP6004484A JPH0617901B2 JP H0617901 B2 JPH0617901 B2 JP H0617901B2 JP 59060044 A JP59060044 A JP 59060044A JP 6004484 A JP6004484 A JP 6004484A JP H0617901 B2 JPH0617901 B2 JP H0617901B2
- Authority
- JP
- Japan
- Prior art keywords
- corrosion
- radiator
- coolant
- anticorrosion
- test paper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002826 coolant Substances 0.000 title claims description 47
- 238000012360 testing method Methods 0.000 title claims description 30
- 238000005260 corrosion Methods 0.000 title claims description 19
- 238000000034 method Methods 0.000 title claims description 15
- 239000003795 chemical substances by application Substances 0.000 title claims description 7
- 238000011156 evaluation Methods 0.000 title claims description 4
- 229910021645 metal ion Inorganic materials 0.000 claims description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 229910052782 aluminium Inorganic materials 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 230000007797 corrosion Effects 0.000 claims description 11
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 239000003153 chemical reaction reagent Substances 0.000 claims description 9
- -1 iron ion Chemical class 0.000 claims description 9
- 239000007793 ph indicator Substances 0.000 claims description 7
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims description 4
- 239000007795 chemical reaction product Substances 0.000 claims description 4
- 239000003086 colorant Substances 0.000 claims description 4
- 229910001431 copper ion Inorganic materials 0.000 claims description 4
- 238000002845 discoloration Methods 0.000 claims description 4
- 239000003112 inhibitor Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- 239000000654 additive Substances 0.000 description 10
- 150000002739 metals Chemical class 0.000 description 8
- 230000006866 deterioration Effects 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 230000002265 prevention Effects 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 5
- 230000003449 preventive effect Effects 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 230000002528 anti-freeze Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001139 pH measurement Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
- G01N31/221—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating pH value
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Biophysics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、自動車用不凍液、ロングライフクーラントお
よびラジエータ防食剤（以下クーラント等と称す）の使
用中の防錆、防食性能を判定する防錆防食性能判定方法
及びその方法に使用する防錆防食性能判定試験キットに
関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to rust prevention during use of antifreeze for automobiles, long-life coolant and radiator anticorrosive (hereinafter referred to as coolant, etc.), and rust prevention for determining anticorrosion performance. The present invention relates to a method for determining anticorrosion performance and a test kit for determining antirust and anticorrosion performance used in the method.
（従来の技術） 従来より、一般に、自動車の冷却水系統に使用されるク
ーラント等にはこの冷却水系統の構成金属材料を腐食か
ら防止してこの機能を維持させるため各種の防錆添加剤
が添加されている。第１表は不凍液の主なる構成材料と
その効果を示す。(Prior Art) Conventionally, various rust-preventive additives have been added to coolants and the like used in automobile cooling water systems in order to prevent the constituent metal materials of the cooling water system from corroding and maintaining this function. Has been added. Table 1 shows the main constituent materials of antifreeze and their effects.
なお、ラジエータ防食剤については凍結防止効果を必要
としないためエチレングリコールを含有しないがその他
の構成材料は基本的にクーラント等と同様である。 The radiator anticorrosive agent does not need an antifreezing effect and thus does not contain ethylene glycol, but the other constituent materials are basically the same as the coolant or the like.
そして、このクーラント等の防錆、防食性能管理につい
ては、使用中の不凍液やロングライフクーラントの主成
分であるエチレングリコールの濃度を簡易比重計または
屈折率計によって測定し、クーラントの濃度を管理し、
また、ラジエータ防食剤については適切な管理方法がな
かったため殆ど行われていないのが実情である。For rust prevention and anticorrosion performance management of this coolant, etc., measure the concentration of ethylene glycol, which is the main component of the antifreeze and long-life coolant in use, with a simple hydrometer or refractometer, and manage the concentration of the coolant. ,
In addition, radiator anticorrosives are rarely used because there is no appropriate control method.
このため、一般のユーザに至っては使用中のクーラント
等の劣化状態を把握することが出来ないため、クーラン
ト等の品質及び使用方法が原因となる冷却水系統のトラ
ブルが発生している。For this reason, the general user cannot grasp the deterioration state of the coolant or the like in use, so that a problem of the cooling water system occurs due to the quality of the coolant or the like and the usage method.
そこで従来は、ラジエータ中のクーラント等溶液中に溶
存する金属イオンに着目し、この金属イオンの生成に関
係した防錆剤を定量測定するという判定方法が提案され
ている。Therefore, conventionally, a determination method has been proposed in which a metal ion dissolved in a solution such as a coolant in a radiator is focused on and a rust preventive agent related to the generation of the metal ion is quantitatively measured.
（発明が解決しようとする課題） しかしながら、上記従来の判定方法は、ある程度クーラ
ント等の劣化を把握することが可能であるものの、すで
にラジエータ等の金属の腐食が進行した状態における判
定方法であり、腐食が進行する以前にこれを察知すると
いうものではなかった。(Problems to be solved by the invention) However, the above-mentioned conventional determination method, although it is possible to grasp the deterioration of the coolant or the like to some extent, is a determination method in the state where the corrosion of the metal such as the radiator has already progressed, It wasn't to detect this before the corrosion progressed.
そこで、提案されたのが本発明であり、その目的とする
ところは、ラジエータ中のクーラント等の劣化を、銅、
鉄又はアルミニウム等の金属類の腐蝕が進行する前に察
知し、この腐食によるトラブルを未然に防止することが
可能であり、かつ同クーラント等の継続使用の可否を正
確に判定することができる自動車用クーラント及びラジ
エータ防食剤の防錆防食判定方法及びその方法に用いる
防錆防食判定試験キットを提供することにある。Therefore, it is the present invention that has been proposed, and the purpose is to prevent deterioration of the coolant in the radiator, copper,
A vehicle that can detect before corrosion of metals such as iron or aluminum progresses, prevent problems due to this corrosion, and accurately determine whether or not continuous use of the coolant is possible. It is intended to provide a method for determining anticorrosion and anticorrosion of coolants and radiator anticorrosives, and a test kit for determining anticorrosion and anticorrosion used in the method.
（課題を解決するための手段および作用） この発明は、上記に基づき使用中のクーラント等の防錆
防食性能の劣化程度を判定するための簡便にして且つ有
効な手段として、試験紙を用いてクーラント等のｐＨ値
および金属イオン濃度を測定する方法及び試験キットで
ある。(Means and Actions for Solving the Problems) The present invention uses a test paper as a simple and effective means for determining the degree of deterioration of the rust prevention and anticorrosion performance of a coolant or the like being used based on the above. It is a method and a test kit for measuring a pH value and a metal ion concentration of a coolant or the like.
その構成は、「銅系、鉄系又はアルミニウム系の防錆防
食剤のうち少なくとも１を含有する自動車用クーラント
およびラジエータ防食剤の防錆防食性能判定方法におい
て、 変色域の異なる各種ｐＨ指示薬を、それぞれのｐＨ域で
異なった色を呈するように混合し、これをろ紙などに含
浸させたｐＨ試験紙を用い、このｐＨ試験紙を自動車用
クーラントおよびラジエータ防食剤に浸漬したときに呈
する色を標準色と比較してｐＨ値を読みとり、そのｐＨ
値がｐＨ８〜９の間であるかそれ以外かを判別し、 銅イオン、鉄イオン又はアルミニウムイオンのうち少な
くとも１と反応し且つ反応生成分が呈色する試薬をろ紙
などに含浸させた金属イオン試験紙を用い、この金属イ
オン試験紙を自動車用クーラントおよびラジエータ防食
剤に浸漬したときに呈する色の濃淡を標準色と比較して
金属イオン濃度を測定し、金属イオンが存在するか否か
を判別し、 これらの判別結果から自動車用クーラントおよびラジエ
ータ防食剤の防錆防食性能を判定する方法」、 並びに「銅系、鉄系又はアルミニウム系の防錆防食剤の
うち少なくとも１を含有する自動車用クーラントおよび
ラジエータ防食剤の防錆防食性能を判定する試験紙であ
って、 変色域の異なる各種ｐＨ指示薬を、それぞれのｐＨ域で
異なった色を呈するように混合し、これをろ紙などに含
浸させたｐＨ試験紙と、 銅イオン、鉄イオン又はアルミニウムイオンのうち少な
くとも１と反応し且つ反応生成分が呈色する試薬をろ紙
などに含浸させた金属イオン試験紙とからなることを特
徴とする防錆防食性能判定試験キット」をその内容とす
る。Its composition is "in the anticorrosion performance evaluation method for an automobile coolant and a radiator anticorrosive containing at least one of a copper-based, iron-based or aluminum-based anticorrosion inhibitor, various pH indicators having different discoloration ranges, Use the pH test paper that is mixed so as to show different colors in each pH range and impregnate this with filter paper, etc., and use this pH test paper as the standard color when immersed in automobile coolant and radiator anticorrosive agent. Read the pH value compared to the color and
A metal ion in which a filter paper or the like is impregnated with a reagent that reacts with at least one of copper ion, iron ion or aluminum ion and has a colored reaction product by determining whether the value is between pH 8 and 9 or otherwise. Using a test paper, compare this metal ion test paper with the tint of the color when immersed in an automobile coolant and a radiator anticorrosive, and compare it with the standard color to measure the metal ion concentration, and check whether the metal ion is present or not. A method for determining the anti-corrosion and anti-corrosion performance of an automobile coolant and a radiator anti-corrosion agent based on the results of the determination, and "for an automobile containing at least one of copper-based, iron-based or aluminum-based A test paper for determining the anticorrosion and anticorrosion performance of coolants and radiator anticorrosives, in which various pH indicators with different discoloration ranges are colored with different colors in each pH range. PH test paper which is mixed so as to exhibit the above, and which is impregnated into a filter paper, and a reagent which reacts with at least one of copper ion, iron ion or aluminum ion and whose reaction product color is impregnated into the filter paper. "A rust-corrosion-corrosion-proof performance judgment test kit characterized by comprising a metal ion test paper".
上記クーラント等は、メーカーによって、ｐＨ値および
添加量が異なる種々の防錆添加剤により構成され、その
ｐＨ値はｐＨ８〜９の間に調整されている。これは、ｐ
Ｈ８〜９の間が銅、鉄又はアルミニウム等の金属類の腐
食防止等に効果的なｐＨ領域であり、この領域外におい
ては同金属類が腐食し易いからである。そして、この防
錆添加剤は自動車のラジエータ等に注入して使用してい
る間に熱および酸化の影響を受けて徐々に消耗され性能
が低下する。The coolant and the like are composed of various rust-preventive additives having different pH values and addition amounts depending on the manufacturer, and the pH value is adjusted to be between pH 8 and 9. This is p
This is because the region between H8 and H9 is a pH region effective for preventing corrosion of metals such as copper, iron and aluminum, and the metals are easily corroded outside this region. Then, the rust preventive additive is gradually consumed due to the influence of heat and oxidation while being injected into a radiator or the like of an automobile and used, and the performance is deteriorated.
ところが、消耗の速さは、ｐＨの異なる防錆添加剤の種
類により差があるため、初期の防錆添加剤全体のｐＨの
バランスが崩れ、これによりラジエータ中のクーラント
等溶液全体のｐＨ値がｐＨ８〜９の間からそれ以外のｐ
Ｈ領域へと変化してしまうのである。However, the speed of consumption varies depending on the type of rust-preventive additives having different pHs, so the pH balance of the initial rust-preventive additives is upset, which causes the pH value of the entire solution such as the coolant in the radiator to change. From pH 8 to 9 other than p
It changes to the H region.
また、使用中の補水によって銅系、鉄系又はアルミニウ
ム系等の緩衝効果を有する防錆添加剤の濃度が低下し、
このため緩衝効果が下がりｐＨが変化する現象となって
あらわれることもある。In addition, the concentration of copper-based, iron-based or aluminum-based antirust additives having a buffering effect decreases due to replenishment during use,
For this reason, the buffering effect may be lowered and the pH may change.
このようにクーラント等の溶液に添加された防錆添加剤
が使用中の熱および酸化によって消耗したり、補水によ
って防錆添加剤量が不足したりすると、やがて冷却水系
等の構成金属材料が腐食され、クーラント等の溶液中に
金属塩および防錆添加剤の金属錯化合物となって溶出す
ることになる。If the anticorrosive additive added to the solution such as coolant is consumed by heat and oxidation during use, or if the amount of anticorrosive additive is insufficient due to water replenishment, the constituent metallic materials such as the cooling water system will eventually corrode. As a result, a metal complex compound of a metal salt and an anticorrosive additive is eluted in a solution such as a coolant.
従って、例えばラジエータ中のクーラント等の溶液のｐ
Ｈ値がｐＨ８〜９の間以外のｐＨ領域にある場合は、該
溶液の防錆力が低下し、銅、鉄又はアルミニウム等の金
属類が腐食し易い状態にあるということができ、 使用中のクータント等のｐＨ値を調べることはクーラン
ト等の劣化の程度を判定し、ラジエータ等、冷却系統の
金属類の腐食を未然に防止することができるという点で
有効な手段である。Therefore, for example, p of a solution such as a coolant in a radiator
When the H value is in a pH range other than between pH 8 and 9, it can be said that the rust preventive power of the solution is lowered and that metals such as copper, iron or aluminum are easily corroded. Examining the pH value of the cootant or the like is an effective means in that the degree of deterioration of the coolant or the like can be determined and corrosion of metals such as a radiator in the cooling system can be prevented in advance.
また、逆にラジエータ中のクーラント等溶液のｐＨ値が
ｐＨ８〜９の間であって、金属イオンが多量に検出され
た場合は、ｐＨ設定に影響を及ぼす各種防錆添加剤の構
成割合に殆ど変化が生じていないが、クーラント等の溶
液の濃度が低下したため等の理由により、防錆力が低下
し、金属類の腐食が生じているということがわかる。On the contrary, when the pH value of the solution such as the coolant in the radiator is between pH 8 and 9 and a large amount of metal ions are detected, the composition ratio of various rust-preventive additives that affect the pH setting is almost the same. Although there is no change, it can be seen that the rust preventive power is lowered and the metals are corroded due to the reason that the concentration of the solution such as the coolant is lowered.
このように、使用中のクーラント等の含有される金属イ
オン濃度を測定することは、前記冷却系統の腐食状態及
びクーラント等の劣化程度を判定する上で有効な手段で
ある。つまり、クーラント等溶液のｐＨ変化を調べるこ
とと、金属イオン濃度を測定することの併用により、ク
ーラント等の防錆防食性能管理を確実に行うことができ
る。As described above, measuring the concentration of metal ions contained in the coolant or the like in use is an effective means for determining the corrosion state of the cooling system and the degree of deterioration of the coolant or the like. That is, the rust prevention and anticorrosion performance management of the coolant and the like can be surely performed by using the combination of examining the pH change of the solution such as the coolant and measuring the metal ion concentration.
以下その実施例を表に基づいて説明する。The embodiment will be described below with reference to the table.
第２表はｐＨ指示薬とそのｐＨ測定範囲を示す一覧表で
ある。これらのｐＨ指示薬のうちから変色域の異なる指
示薬を混合して第３表に示すようなｐＨ測定範囲を有す
る３種類の混合指示薬を調整する。なお、その混合比は
表示の通りである。これら混合指示薬をそれぞれろ紙に
含浸させた上、棒又は紙に貼付し測定対称となるクーラ
ント等の液に浸漬しｐＨ試験紙の呈した色を標準色と比
較しそのｐＨ値を読みとるものである。第４表は混合指
示薬とその他の指示薬の一部のｐＨ値に対する呈色の変
化を示すものである。なお、ｐＨ指示薬によるｐＨ測定
は混合指示薬を用いて判別する他、さらに、適当な指示
薬を用いて確認するなど第４表に示す試薬を被測定溶液
の状態に応じて適切に使用してもよい。Table 2 is a list showing pH indicators and their pH measurement ranges. Among these pH indicators, indicators having different color change ranges are mixed to prepare three kinds of mixed indicators having a pH measurement range as shown in Table 3. The mixing ratio is as shown. Each of these mixing indicators is impregnated in a filter paper, and then stuck to a stick or paper and immersed in a liquid such as a coolant that is symmetrical to the measurement, and the pH value read by comparing the color exhibited by the pH test paper with a standard color. . Table 4 shows the change in coloration with respect to some pH values of the mixed indicator and other indicators. The pH measurement with the pH indicator may be performed by using a mixed indicator, and the reagents shown in Table 4 may be appropriately used depending on the state of the solution to be measured, such as confirmation using an appropriate indicator. .
つぎに、金属イオン試験紙については、金属イオンと反
応し且つ反応生成物が呈色するような試薬をろ紙などに
含浸させ、これを上棒又は紙に貼付し、金属イオンを測
定しようとするクーラント等にこれを浸漬しその試験紙
の呈した色の濃淡を標準色と比較し金属イオン濃度を読
みとるものである。第５表は金属イオンの定量に用いら
れる主な発色試薬とその測定濃度範囲を示し第６表に金
属イオンの濃度による試薬の変化を示す。 Next, regarding the metal ion test paper, an attempt is made to measure the metal ion by impregnating a filter paper or the like with a reagent that reacts with the metal ion and causes the reaction product to develop color, and affixing this to an upper bar or paper. This is immersed in a coolant or the like and the density of the color exhibited by the test paper is compared with a standard color to read the metal ion concentration. Table 5 shows the main color-developing reagents used for the quantification of metal ions and the measurement concentration range thereof, and Table 6 shows the change of the reagents depending on the concentration of metal ions.
尚、金属イオン濃度の判別は、第６表に示すような試験
紙の色の変化を目視により読み取り判別していくのであ
るが、使用する試薬の種類により試験紙の色の変化を読
み取ることができるイオン濃度の範囲は様々である。本
実施例で使用した試験紙では試験紙の色の変化を読み取
り判別できる金属イオン濃度の下限が５ｐｐｍであるの
で、注３の判定基準において、溶液中の金属イオンの存
在を判別できる５ｐｐｍ以上を金属類が腐食していると
して不良とした。 To determine the metal ion concentration, the color change of the test paper as shown in Table 6 is visually read and determined, but the color change of the test paper can be read depending on the type of reagent used. The range of ion concentration that can be obtained is various. In the test paper used in this example, the lower limit of the metal ion concentration at which the change in the color of the test paper can be read and determined is 5 ppm. Therefore, in the criterion of Note 3, 5 ppm or more that can determine the presence of the metal ion in the solution is used. It was considered as bad because the metals were corroded.
また、クーラント等の溶液のｐＨ値あがｐＨ８〜９の間
以外のｐＨ領域にある場合は、該溶液の防錆力が低下
し、銅、鉄又はアルミニウム等の金属類が腐食し易い状
態にあることから注意を要するので、この場合も不良と
した。Further, when the pH value of the solution such as coolant is in a pH range other than between pH 8 and 9, the rust preventive power of the solution is reduced, and metals such as copper, iron or aluminum are easily corroded. Since it is necessary to be careful, it was determined to be defective in this case as well.
この発明による判定方法の上記実施例における実車回収
液による金属腐食性試験結果は第８表に示す通りで試験
紙を用いて使用中のクーラント等のｐＨ値および金属イ
オンを測定した結果と対比してその有効性を正しく示す
ものである。The results of the metal corrosiveness test with the recovered liquid of the actual vehicle in the above-mentioned embodiment of the determination method according to the present invention are shown in Table 8 and are compared with the results of measuring the pH value and the metal ion of the coolant in use using the test paper. It correctly shows its effectiveness.
（発明の効果） 従って、この発明を採用することにより、ラジエータ中
のクーラント等の劣化を、銅、鉄又はアルミニウム等の
金属類が腐食する前に察知し、この腐食を未然に防止す
ることができる。また、一般ユーザーでも簡便に且つ有
効にクーラント等の使用継続の可否を正確に判別し適切
な処置対策をとることが可能となるのでクーラント等の
品質および使用法が原因になる冷却水系統のトラブル発
生の防止に貢献できるとともにクーラント等の使用につ
いて一般ユーザーの認識を啓発して保守点検における有
力な道具ともなり得る効果は大きい。 (Advantages of the Invention) Therefore, by adopting the present invention, it is possible to detect deterioration of the coolant or the like in the radiator before the metal such as copper, iron or aluminum corrodes, and prevent this corrosion in advance. it can. In addition, even general users can accurately and easily determine whether or not to continue to use coolant, etc. and take appropriate corrective measures.Therefore, troubles in the cooling water system caused by the quality and usage of coolant, etc. It has a great effect that it can contribute to the prevention of the occurrence and can be a powerful tool in maintenance and inspection by enlightening the awareness of general users about the use of coolant and the like.
Claims (2)
剤のうち少なくとも１を含有する自動車用クーラントお
よびラジエータ防食剤の防錆防食性能判定方法におい
て、 変色域の異なる各種ｐＨ指示薬を、それぞれのｐＨ域で
異なった色を呈するように混合し、これをろ紙などに含
浸させたｐＨ試験紙を用い、このｐＨ試験紙を自動車用
クーラントおよびラジエータ防食剤に浸漬したときに呈
する色を標準色と比較してｐＨ値を読みとり、そのｐＨ
値がｐＨ８〜９の間であるかそれ以外かを判別し、 銅イオン、鉄イオン又はアルミニウムイオンのうち少な
くとも１と反応し且つ反応生成分が呈色する試薬をろ紙
などに含浸させた金属イオン試験紙を用い、この金属イ
オン試験紙を自動車用クーラントおよびラジエータ防食
剤に浸漬したときに呈する色の濃淡を標準色と比較して
金属イオン濃度を測定し、金属イオンが存在するか否か
を判別し、 これらの判別結果から自動車用クーラントおよびラジエ
ータ防食剤の防錆防食性能を判定する方法。1. A method for determining anticorrosion performance of an automotive coolant and a radiator anticorrosive containing at least one of a copper-based, iron-based or aluminum-based anticorrosion inhibitor, wherein various pH indicators having different discoloration ranges are used. Use the pH test paper that is mixed so as to show different colors in each pH range and impregnate this with filter paper, etc., and use this pH test paper as the standard color when immersed in automobile coolant and radiator anticorrosive agent. Read the pH value compared to the color and
A metal ion in which a filter paper or the like is impregnated with a reagent that reacts with at least one of copper ion, iron ion or aluminum ion and has a colored reaction product by determining whether the value is between pH 8 and 9 or otherwise. Using a test paper, compare this metal ion test paper with the tint of the color when immersed in an automobile coolant and a radiator anticorrosive, and compare it with the standard color to measure the metal ion concentration, and check whether the metal ion is present or not. A method for determining the anticorrosion and anticorrosion performance of automobile coolants and radiator anticorrosives based on these determination results.
剤のうち少なくとも１を含有する自動車用クーラントお
よびラジエータ防食剤の防錆防食性能を判定する試験紙
であって、 変色域の異なる各種ｐＨ指示薬を、それぞれのｐＨ域で
異なった色を呈するように混合し、これをろ紙などに含
浸させたｐＨ試験紙と、 銅イオン、鉄イオン又はアルミニウムイオンのうち少な
くとも１と反応し且つ反応生成分が呈色する試薬をろ紙
などに含浸させた金属イオン試験紙とからなることを特
徴とする防錆防食性能判定試験キット。2. A test paper for judging the anticorrosion and anticorrosion performance of an automotive coolant and a radiator anticorrosion agent containing at least one of a copper-based, iron-based or aluminum-based anticorrosion and corrosion inhibitor, which has different discoloration regions. Various pH indicators are mixed so as to show different colors in each pH range, and the pH test paper impregnated with this is reacted with at least one of copper ion, iron ion or aluminum ion, and reacted. A rust / corrosion / corrosion performance evaluation test kit, which comprises a metal ion test paper in which a reagent whose production is colored is impregnated in a filter paper or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59060044A JPH0617901B2 (en) | 1984-03-28 | 1984-03-28 | Anti-corrosion anti-corrosion performance evaluation method for automobile coolant and radiator anti-corrosion agent and anti-corrosion anti-corrosion performance evaluation test kit used for the method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59060044A JPH0617901B2 (en) | 1984-03-28 | 1984-03-28 | Anti-corrosion anti-corrosion performance evaluation method for automobile coolant and radiator anti-corrosion agent and anti-corrosion anti-corrosion performance evaluation test kit used for the method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60202359A JPS60202359A (en) | 1985-10-12 |
| JPH0617901B2 true JPH0617901B2 (en) | 1994-03-09 |
Family
ID=13130679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59060044A Expired - Lifetime JPH0617901B2 (en) | 1984-03-28 | 1984-03-28 | Anti-corrosion anti-corrosion performance evaluation method for automobile coolant and radiator anti-corrosion agent and anti-corrosion anti-corrosion performance evaluation test kit used for the method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0617901B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033504A (en) * | 2012-12-08 | 2013-04-10 | 杭州特种纸业有限公司 | Preparation method of universal pH test paper |
| US11965452B1 (en) * | 2023-01-25 | 2024-04-23 | GM Global Technology Operations LLC | Methods for detecting contaminations in vehicle coolant systems |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2395555B (en) | 2002-11-22 | 2005-10-12 | Schlumberger Holdings | Apparatus and method of analysing downhole water chemistry |
| GB2412171A (en) * | 2004-02-19 | 2005-09-21 | Schlumberger Holdings | Spectroscopic pH measurement using optimised mixtures of reagents to extend measurement range |
| JP4669830B2 (en) * | 2006-11-17 | 2011-04-13 | ムラキ株式会社 | Coolant inspection tool and coolant inspection method |
| CN107703254B (en) * | 2017-09-14 | 2020-09-29 | 中国神华能源股份有限公司 | Method for detecting whether pH value of ammonium nitrate solution in emulsion explosive is qualified or not |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5940164A (en) * | 1982-08-30 | 1984-03-05 | Nissan Diesel Motor Co Ltd | Simple deterioration deciding method of cooling water or the like of internal combustion engine |
-
1984
- 1984-03-28 JP JP59060044A patent/JPH0617901B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033504A (en) * | 2012-12-08 | 2013-04-10 | 杭州特种纸业有限公司 | Preparation method of universal pH test paper |
| CN103033504B (en) * | 2012-12-08 | 2014-10-29 | 杭州特种纸业有限公司 | Preparation method of universal pH test paper |
| US11965452B1 (en) * | 2023-01-25 | 2024-04-23 | GM Global Technology Operations LLC | Methods for detecting contaminations in vehicle coolant systems |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60202359A (en) | 1985-10-12 |
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