CN103540923A - Non-phosphorus phosphating treatment solution and treatment process for automobile clutch surfaces - Google Patents
Non-phosphorus phosphating treatment solution and treatment process for automobile clutch surfaces Download PDFInfo
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- CN103540923A CN103540923A CN201310454516.9A CN201310454516A CN103540923A CN 103540923 A CN103540923 A CN 103540923A CN 201310454516 A CN201310454516 A CN 201310454516A CN 103540923 A CN103540923 A CN 103540923A
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- epoxy resin
- coupling agent
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Abstract
The invention discloses a non-phosphorus phosphating treatment solution and treatment process for automobile clutch surfaces. The phosphating treatment solution is prepared from the following raw materials in percentage by weight: 8-12% of a silane coupling agent, 5-10% of epoxy resin, 1-2% of a reaction accelerant and the balance of de-ionized water, wherein the silane coupling agent contains 64-96g/L of KH-560-3-(2,3-epoxy propoxy) propyl trimethoxy silane, and 16-24g/L of KH-570-gamma-methylacryloyl propyl trimethoxy silane; a mass ratio of KH560 and KH570 in the silane coupling agent is 4: (0.95-1.05), and pH of an organic silane solution is regulated to 3-4 through an HNO3 solution which is 9-11% in mass percentage; the epoxy resin is sold on the market, and solid content of the epoxy resin is 57-63%; solid content of the epoxy resin in the treatment solution is controlled as 3-10%. The treatment solution is used for replacing an existing treatment solution for clutch surface phosphating treatment; the treatment solution, on the premise of guaranteeing coating quality of a clutch surface film, is simple in step, and waste residue and waste gas generated from original phosphating treatment are reduced.
Description
Technical field
The present invention relates to a kind of without phosphorus etching solution and treatment process, relate in particular to the using method of a kind of automobile clutch without phosphorus etching solution in surface and this treatment solution.
Background technology
Phosphorization treatment technology is widely used in the fields such as automotive industry, mechanical industry, shipbuilding industry, aircraft industry, household electrical appliance, equipment manufacture, development through more than 100 years, phosphorization technology had been obtained a lot of new achievements in modern age, in many chemical surface conversion treatment process, bonderizing occupies critical role.But Phosphating Solution is larger to environment side effect, thereby the substitute technology of searching phosphatization, be the focus of research.
Silane treatment is to take silane coupling agent metallic surface to be processed as main body.Silane coupling agent R ' (CH
2)
n si (OR)
3one end of molecule is silicon ester (Si-OR), becomes silanol before use through hydrolysis, the film forming by the metal ion formation chemical bond of Si-OH and metallic surface.The other end of silane coupling agent is organo-functional group, it can divide with organic phase, coating or paint compatible mutually, remaining silane molecule forms the silane film with Si-O-Si tridimensional network in metallic surface by the aggregation between Si-OH group, this is Adhesion enhancement with regard to making metal and the organic phase bonding strength between dividing obtain improving significantly, surface of steel plate solidity to corrosion also be improved significantly.
molecular structurein contain epoxide group
macromolecular compoundbe referred to as
epoxy resin.Epoxy resin after solidifying has good thing
changeperformance, it is right
metalwith non-metallic material
tablemask has excellent bonding strength, thereby is widely used in industrial production.
In recent years, the domestic reports that have much about without phosphorus phosphatization and phosphatization substitute technology, as Chinese patent CN201210429685.2 discloses the without phosphorus vitrification treatment solution of a kind of selfreparing for galvanized sheet, can by template self-assembly, form the unformed film of one deck densification on galvanized sheet surface.Chinese patent CN201210376052.X discloses a kind of steel surface without phosphorus chromium-free deactivation film forming liquid and using method thereof, ferrous metal is immersed in the without phosphorus chromium-free deactivation film forming of steel surface liquid and reacts 10 ~ 360 minutes, on ferrous metal surface, forms without phosphorus Chrome-free and transforms rete.Chinese patent CN201210371981.1 discloses the preparation method of the without phosphorus chromium-free environment-friendly type of a kind of Mg alloy surface conversion film, processes 1 ~ 45 minute under the condition that temperature is 10 ~ 99 ℃, and the without phosphorus Chrome-free of one deck forming at Mg alloy surface transforms rete.Chinese patent CN201080048852.8 discloses a kind of surface treatment liquid, and this surface treatment liquid contains water-soluble zirconium compound, tetraalkoxysilane, has the compound of epoxy group(ing), sequestrant, silane coupling agent, vanadic acid and metallic compound etc.But above-mentioned patent does not all relate to the without phosphorus bonderizing about automobile clutch surface, and automobile clutch is the effigurate workpiece of tool, general treatment solution such as is difficult at workpiece lumen, turning at the local conversion film that forms, patent relate to treatment process or the time long, or system component complexity is unfavorable for actual production.
Summary of the invention
Object of the present invention is exactly for prior art above shortcomings, and provide a kind of automobile clutch surface without phosphorus etching solution, in order to substitute the parkerized treatment solution of current clutch surface, in the situation that guaranteeing clutch surface film coating quality, processing step is simple, easy to operate, reduce the waste residue waste gas that original bonderizing produces, improve the environmental protection degree of enterprise production process.
Another object of the present invention is to provide the treatment process of the without phosphorus etching solution in a kind of automobile clutch surface.
For realizing above-mentioned purpose of the present invention, the without phosphorus etching solution in a kind of automobile clutch of the present invention surface by the following technical solutions:
The without phosphorus etching solution in the present invention a kind of automobile clutch surface comprises by following raw materials according to be made by following weight proportion: silane coupling agent 8 ~ 12%, and epoxy resin 5 ~ 10%, reaction promotor 1 ~ 2%, all the other are deionized water; In described silane coupling agent composition, contain:
KH-560---3-(2,3-epoxy the third oxygen) propyl trimethoxy silicane: 64 ~ 96g/L,
KH-570---γ-methacryloxypropyl trimethoxy silane: 16 ~ 24g/L;
In described silane coupling agent, the mass ratio of KH560 and KH570 is 4:(0.95 ~ 1.05), and be 9 ~ 11% HNO with massfraction
3solution regulates between organosilane aqueous solution pH to 3 ~ 4;
Described epoxy resin is sold by market, and solid content is between 57 ~ 63%; In described treatment solution, the solid content of epoxy resin is controlled between 3 ~ 10%.
Described silane coupling agent mass ratio should be strict controlled in 4:1 for best, and is 10% HNO with massfraction
3solution regulates between organosilane aqueous solution pH to 3 ~ 4, when the conversion film solidity to corrosion that the mass ratio of KH560 and KH570 forms at 4:1 best.Described silane coupling agent mainly provides the cohesive force of matrix and rete, and epoxy group(ing) contained in silane coupled agent molecule has excellent physicochemical property after solidifying, and can improve the solidity to corrosion of matrix.When being controlled at 10% left and right, described silane coupling agent weight ratio not only can guarantee form the quality of conversion film but also be conducive to reduce production costs.
Described epoxy resin is sold by market, and solid content is in 60% left and right.In described treatment solution, the solid content of epoxy resin need be controlled at below 10%.Solid content is too high, and it is large that solution viscosity becomes, and easily causes workpiece surface viscosity too high in technological process, affects the use properties of clutch coupling.
The preparation method of above-mentioned treatment solution, is characterized in that: in reactor, adding a certain amount of deionized water, under whipped state, add silane coupling agent, is that 10% nitric acid regulates treatment solution pH with massfraction.Stir after 1 hour, add epoxy resin, stir 2 hours after epoxy resin fully dissolves, within standing 1 day, use.
The processing condition that the treatment process of the without phosphorus etching solution in automobile clutch of the present invention surface forms without phosphorus conversion film for clutch surface are: treatment solution pH3 ~ 4,25 ~ 35 ℃ for the treatment of temps, 60 ~ 80 seconds treatment times, 80 ~ 100 ℃ of solidification values, 3 ~ 5 minutes set times.
The treatment process of the without phosphorus etching solution in automobile clutch of the present invention surface comprises: degreasing → washing → oven dry → without phosphorus phosphatization → solidifying.The concrete following steps that adopt:
(1) workpiece is carried out to degreasing;
(2) under normal temperature, carry out spray washing, the time is 4 ~ 6 minutes;
Dry workpiece (3) 60 ± 5 ℃ of left and right;
(4) carry out without phosphorus bonderizing;
(5) without phosphorus conversion film is cured.
Evaluating the without phosphorus etching solution in automobile clutch of the present invention surface and for clutch surface, form the performance of without phosphorus conversion film, is mainly that the quality of without phosphorus conversion film after application is evaluated.Evaluation result obtains by following experiment content:
(1) stability for the treatment of solution
Treatment solution is placed under room temperature condition to airtight preservation three months, the state of observation treatment solution.
(2) neutral salt spray test
With reference to GB10125-1997, without phosphorus conversion film is carried out to neutral salt spray test.This tests etchant solution used is 5% sodium chloride solution, pH value of solution=7 (± 0.5), spray the temperature inside the box is 35 (± 2) ℃, sinkability is 2mL/ (80cm
2h), sample becomes 30 ° of placements with salt fog frame vertical direction, sprays continuously after 200 hours, observes the corrosion width that workpiece surface is drawn fork place.
(3) adhesion test
The situation of special determinator pull-away in coating surface draws the area that circle that a string circle of intersecting of partly overlapping mutually observes these overlapping intersections surrounds is used in the test of sticking power, is divided into 7 grades during evaluation.
The advantage of the automobile clutch without phosphorus etching solution in surface of the present invention and treatment process thereof is: (1) silane coupling agent is as main filmogen, produce waste gas waste residue few, the Industry Waste water pollutant of discharge is few, little to environmental hazard, and silane coupling agent film forming rear surface is uniform and smooth, and frictional behaviour is good; (2) epoxy resin has high thermal stability, wear-resistant, in hot environment, makes rete keep good frictional behaviour, improves the work-ing life of clutch coupling; (3) because epoxy resin itself has certain viscosity, workpiece can be directly after surface treatment and clutch coupling oilpaper adhere to each other, reduce the production cost of enterprise; (4) the without phosphorus phosphorization treatment process step in automobile clutch surface is simple, and Environmental Safety, without the parameters such as total acid of periodic cleaning sediment and mensuration treatment solution; (5) organosilane and epoxy resin have certain viscosity, can form certain thickness conversion film in inner chamber and the corner of automobile clutch, improve the solidity to corrosion of automobile clutch integral body.
Embodiment
for further describing the present invention, below by embodiment, the automobile clutch without phosphorus etching solution in surface of the present invention and treatment process thereof are elaborated.
embodiment 1
The treatment solution of the present embodiment by weight, comprises following component: KH570 1.6%, and KH560 6.4%, epoxy resin 5%, and promotor 1%, surplus is water.The pH scope of controlling treatment solution is 3 ~ 4.
embodiment 2
The treatment solution of the present embodiment by weight, comprises following component: KH570 2%, and KH560 8%, epoxy resin 7.5%, and promotor 1.5%, surplus is water.The pH scope of controlling treatment solution is 3 ~ 4.
embodiment 3
The treatment solution of the present embodiment by weight, comprises following component: KH570 2.4%, and KH560 9.6%, epoxy resin 10%, and promotor 2%, surplus is water.The pH scope of controlling treatment solution is 3 ~ 4.
embodiment 4
The treatment solution of the present embodiment by weight, comprises following component: KH570 1.6%, and KH560 6.4%, epoxy resin 7%, and promotor 1%, surplus is water.The pH scope of controlling treatment solution is 3 ~ 4.
embodiment 5
The treatment solution of the present embodiment by weight, comprises following component: KH570 2%, and KH560 8%, epoxy resin 9%, and promotor 2%, surplus is water.The pH scope of controlling treatment solution is 3 ~ 4.
embodiment 6
The treatment solution of the present embodiment by weight, comprises following component: KH570 2.4%, and KH560 9.6%, epoxy resin 5%, and promotor 2%, surplus is water.The pH scope of controlling treatment solution is 3 ~ 4.
In the specific examples of each, the treatment process of without phosphorus phosphatization comprises the following steps above:
(1) workpiece is carried out to degreasing;
(2) under normal temperature, carry out spray washing, the time is 5 minutes;
Dry workpiece (3) 60 ℃ of left and right;
(4) carry out without phosphorus bonderizing;
(5) without phosphorus conversion film is cured.
The without phosphorus conversion film the performance test results of table 1
| ? | Treatment solution stability | Salt mist experiment | Sticking power |
| Embodiment 1 | Place 3 months without precipitation | Within 200 hours, salt fog corrosion width is 2mm | 1 grade |
| Embodiment 2 | Place 3 months without precipitation | Within 200 hours, salt fog corrosion width is 1.8mm | 1 grade |
| Embodiment 3 | Place 3 months without precipitation | Within 200 hours, salt fog corrosion width is 1mm | 1 grade |
| Embodiment 4 | Place 3 months without precipitation | Within 200 hours, salt fog corrosion width is 2mm | 1 grade |
| Embodiment 5 | Place 3 months without precipitation | Within 200 hours, salt fog corrosion width is 1.5mm | 1 grade |
| Embodiment 6 | Place 3 months without precipitation | Within 200 hours, salt fog corrosion width is 2mm | 1 grade |
Claims (4)
1. the without phosphorus etching solution in automobile clutch surface, is characterized in that comprising by following raw materials according and makes by following weight proportion: silane coupling agent 8 ~ 12%, and epoxy resin 5 ~ 10%, reaction promotor 1 ~ 2%, all the other are deionized water; In described silane coupling agent composition, contain:
KH-560---3-(2,3-epoxy the third oxygen) propyl trimethoxy silicane: 64 ~ 96g/L,
KH-570---γ-methacryloxypropyl trimethoxy silane: 16 ~ 24g/L;
In described silane coupling agent, the mass ratio of KH560 and KH570 is 4:(0.95 ~ 1.05), and be 9 ~ 11% HNO with massfraction
3solution regulates between organosilane aqueous solution pH to 3 ~ 4;
Described epoxy resin is sold by market, and solid content is between 57 ~ 63%; In described treatment solution, the solid content of epoxy resin is controlled between 3 ~ 10%.
2. the without phosphorus etching solution in automobile clutch as claimed in claim 1 surface, is characterized in that: in described silane coupling agent, the mass ratio of KH560 and KH570 is 4:1, and is 10% HNO with massfraction
3solution regulates between organosilane aqueous solution pH to 3 ~ 4.
3. the treatment process of the without phosphorus etching solution in automobile clutch as claimed in claim 1 or 2 surface, it is characterized in that the processing condition that form without phosphorus conversion film for clutch surface are: treatment solution pH3 ~ 4,25 ~ 35 ℃ for the treatment of temps, 60 ~ 80 seconds treatment times, 80 ~ 100 ℃ of solidification values, 3 ~ 5 minutes set times.
4. the treatment process of the without phosphorus etching solution in automobile clutch as claimed in claim 3 surface, is characterized in that treating processes comprises the following steps:
(1) workpiece is carried out to degreasing;
(2) under normal temperature, carry out spray washing, the time is 4 ~ 6 minutes;
Dry workpiece (3) 60 ± 5 ℃ of left and right;
(4) carry out without phosphorus bonderizing;
(5) without phosphorus conversion film is cured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310454516.9A CN103540923B (en) | 2013-09-29 | 2013-09-29 | The automobile clutch without phosphorus etching solution in surface and treatment process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310454516.9A CN103540923B (en) | 2013-09-29 | 2013-09-29 | The automobile clutch without phosphorus etching solution in surface and treatment process thereof |
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| Publication Number | Publication Date |
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| CN103540923A true CN103540923A (en) | 2014-01-29 |
| CN103540923B CN103540923B (en) | 2016-05-04 |
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| CN201310454516.9A Expired - Fee Related CN103540923B (en) | 2013-09-29 | 2013-09-29 | The automobile clutch without phosphorus etching solution in surface and treatment process thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109321910A (en) * | 2018-09-13 | 2019-02-12 | 安徽宁磁电子科技有限公司 | A kind of neodymium-iron-boron magnetic material surface treatment liquid |
| CN111455366A (en) * | 2020-04-03 | 2020-07-28 | 贵州水钢同鑫晟金属制品有限公司 | Modified phosphorus-free boron-free coating agent and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094194A (en) * | 2009-12-09 | 2011-06-15 | 中国科学院金属研究所 | Silanization treatment method before coating of steel piece |
| CN102181228A (en) * | 2011-04-15 | 2011-09-14 | 龚向光 | Metal surface silanization treatment agent and surface silanization treatment method using the same |
| CN102534600A (en) * | 2012-01-17 | 2012-07-04 | 华东理工大学华昌聚合物有限公司 | Method for carrying out seawater corrosion resistant treatment on surface of Q345 steel by using silane coupling agent Si-69 |
-
2013
- 2013-09-29 CN CN201310454516.9A patent/CN103540923B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094194A (en) * | 2009-12-09 | 2011-06-15 | 中国科学院金属研究所 | Silanization treatment method before coating of steel piece |
| CN102181228A (en) * | 2011-04-15 | 2011-09-14 | 龚向光 | Metal surface silanization treatment agent and surface silanization treatment method using the same |
| CN102534600A (en) * | 2012-01-17 | 2012-07-04 | 华东理工大学华昌聚合物有限公司 | Method for carrying out seawater corrosion resistant treatment on surface of Q345 steel by using silane coupling agent Si-69 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109321910A (en) * | 2018-09-13 | 2019-02-12 | 安徽宁磁电子科技有限公司 | A kind of neodymium-iron-boron magnetic material surface treatment liquid |
| CN111455366A (en) * | 2020-04-03 | 2020-07-28 | 贵州水钢同鑫晟金属制品有限公司 | Modified phosphorus-free boron-free coating agent and preparation method thereof |
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| CN103540923B (en) | 2016-05-04 |
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