CN105295708A - Anticorrosive rare earth aluminum alloy pulling sol and preparation method thereof - Google Patents
Anticorrosive rare earth aluminum alloy pulling sol and preparation method thereof Download PDFInfo
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 21
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 19
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims description 7
- -1 rare earth cerium nitrate Chemical class 0.000 claims abstract description 21
- 229920002545 silicone oil Polymers 0.000 claims abstract description 16
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 14
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000008117 stearic acid Substances 0.000 claims abstract description 14
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000001257 hydrogen Substances 0.000 claims abstract description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 10
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims abstract description 10
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims abstract description 9
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical compound [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 claims abstract description 9
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 8
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 7
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 7
- 239000012188 paraffin wax Substances 0.000 claims abstract description 7
- 235000019940 salatrim Nutrition 0.000 claims abstract description 7
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 27
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 23
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 9
- 238000013019 agitation Methods 0.000 claims description 9
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 239000010408 film Substances 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 239000004408 titanium dioxide Substances 0.000 claims description 7
- 239000004160 Ammonium persulphate Substances 0.000 claims description 6
- 235000003935 Hippophae Nutrition 0.000 claims description 6
- 241000229143 Hippophae Species 0.000 claims description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 6
- 235000019395 ammonium persulphate Nutrition 0.000 claims description 6
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 229910000077 silane Inorganic materials 0.000 claims description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- JLTDJTHDQAWBAV-UHFFFAOYSA-N N,N-dimethylaniline Chemical compound CN(C)C1=CC=CC=C1 JLTDJTHDQAWBAV-UHFFFAOYSA-N 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 3
- 238000000967 suction filtration Methods 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract description 10
- 238000005260 corrosion Methods 0.000 abstract description 7
- 150000002739 metals Chemical class 0.000 abstract 2
- LBTSNEJGMVFUEW-UHFFFAOYSA-N 2,2,3,3,4,4,5,5,6,8,8,8-dodecafluorooctoxy-dimethoxy-propylsilane Chemical compound FC(C(C(C(C(F)(F)CO[Si](OC)(OC)CCC)(F)F)(F)F)(F)F)CC(F)(F)F LBTSNEJGMVFUEW-UHFFFAOYSA-N 0.000 abstract 1
- VVAKEQGKZNKUSU-UHFFFAOYSA-N 2,3-dimethylaniline Chemical compound CC1=CC=CC(N)=C1C VVAKEQGKZNKUSU-UHFFFAOYSA-N 0.000 abstract 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 239000002202 Polyethylene glycol Substances 0.000 abstract 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 abstract 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 abstract 1
- 229920001223 polyethylene glycol Polymers 0.000 abstract 1
- 235000010265 sodium sulphite Nutrition 0.000 abstract 1
- 229920000767 polyaniline Polymers 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000003075 superhydrophobic effect Effects 0.000 description 4
- 230000002209 hydrophobic effect Effects 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- CDULGHZNHURECF-UHFFFAOYSA-N 2,3-dimethylaniline 2,4-dimethylaniline 2,5-dimethylaniline 2,6-dimethylaniline 3,4-dimethylaniline 3,5-dimethylaniline Chemical class CC1=CC=C(N)C(C)=C1.CC1=CC=C(C)C(N)=C1.CC1=CC(C)=CC(N)=C1.CC1=CC=C(N)C=C1C.CC1=CC=CC(N)=C1C.CC1=CC=CC(C)=C1N CDULGHZNHURECF-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910018557 Si O Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 125000003709 fluoroalkyl group Chemical group 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- 239000007921 spray Substances 0.000 description 1
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Colloid Chemistry (AREA)
Abstract
The invention discloses anticorrosive rare earth aluminum alloy pulling sol. The anticorrosive rare earth aluminum alloy pulling sol is prepared from, by weight, 2-3 parts of chlorinated paraffin, 1-2 parts of sea buckthron oil, 0.7-1 part of cerium nitrate, 0.3- 1 part of lanthanum nitrate, 10-12 parts of nano titanium dioxide, 0.8-1 part of stearic acid, 0.2-0.4 part of sodium dodecyl benzene sulfonate, 10-18 parts of dodecafluoroheptyl propyl trimethoxysilane, 20-30 parts of hydrogen-containing silicone oil, 0.7-1 part of 25-28% ammonia water, 1-2 parts of silane coupling agent KH560, 90-100 parts of 2,3-dimethylaniline, 0.6-1 part of ammonium persulfate, 2-3 parts of salatrim, 0.7-2 parts of p-toluene sulfonic acid, 3-4 parts of polyethylene glycol and 1-2 parts of sodium sulfite. The rare earth cerium nitrate and the lanthanum nitrate are added into the anticorrosive rare earth aluminum alloy pulling sol so that the anti-corrosion performance of metals can be effectively improved, and protectiveness to the metals is improved.
Description
Technical field
The present invention relates to technical field of aluminum alloy technology, particularly relate to anticorrosion lift colloidal sol of a kind of rare earth aluminium alloy and preparation method thereof.
Background technology
As everyone knows, contact angle (CA) is greater than 150 ° and the surface that roll angle (SA) is less than 10 ° is called super hydrophobic surface by us.In recent years, super hydrophobic material is widely used in fundamental research, daily life and industrial production with the performance of its uniqueness, can be used for the fields such as Metal surface anti-corrosion, fluid drag-reduction, waterproof, antifouling and automatically cleaning, organic-inorganic nanocomposite is as the field of emerging emergence, in super-hydrophobic composite organic-inorganic material system, critical positions is occupied with its superior performance, main with organic and inorganic thing for raw material, adopt proper method to make it to be composited by chemical bond within the scope of micro-/ nano.Wherein, inorganic nano-particle Chang Zuowei packing material, obtains micro-/ nano secondary structure with organism compound, gives matrix material superhydrophobic property;
Metal is under the effect of surrounding medium (especially water and air), and the destruction produced due to chemical reaction, electrochemical reaction or physical dissolution is exactly corrosion of metal, is the inverse process of the spontaneous a kind of metallurgy carried out silently.The industrial media such as the physical environments such as air, soil, seawater and microorganism and acid, alkali, salt, combustion gas all likely cause corrosion of metal.The harm that metallic corrosion brings, throughout the every field of national economy, comprises chemical industry, the energy, machinery, aerospace, information, agricultural, ocean exploitation and Infrastructure etc.As long as use the place of metallic substance, all more or less there is etching problem.The etching problem of metallic substance and study effective aseptic technic oneself becomes the problem of can not ignore in current Materials Science and Engineering field;
Polyaniline has cheaper starting materials and is easy to get, synthesizes the feature such as simple and be counted as the high-performance impregnating material of a new generation.After the polyaniline film proposing first to adopt electrochemical method to prepare from DeBerry in 1985 has passivation on stainless steel surface, polyaniline has become a new focus in the research and development in anticorrosion.Although the anticorrosion mechanism of polyaniline is not also completely understood, the antiseptic property of the excellence that polyaniline shows is mathematical, and therefore, people still proceed further investigation to it.At present, the research for polyaniline is mainly divided into two aspects: one is on existing Research foundation, continues p-poly-phenyl amine anticorrosion mechanism and carries out comparatively deep research and exploitation; Two is the barrier propterties carrying out to improve further polyaniline coating by all means.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides anticorrosion lift colloidal sol of a kind of rare earth aluminium alloy and preparation method thereof.
The present invention is achieved by the following technical solutions:
The anticorrosion lift colloidal sol of a kind of rare earth aluminium alloy, it is made up of the raw material of following weight parts:
Clorafin 2-3, Oleum Hippophae 1-2, cerous nitrate 0.7-1, lanthanum nitrate 0.3-1, nano titanium oxide 10-12, stearic acid 0.8-1, Sodium dodecylbenzene sulfonate 0.2-0.4, ten difluoro heptyl propyl trimethoxy silicane 10-18, the ammoniacal liquor 0.7-1 of containing hydrogen silicone oil 20-30,25-28%, silane coupling agent KH5601-2,23 dimethyl aniline 90-100, ammonium persulphate 0.6-1, short and long-chain acyl triglyceride molecules 2-3, tosic acid 0.7-2, polyoxyethylene glycol 3-4, S-WAT 1-2;
A preparation method for the described anticorrosion lift colloidal sol of rare earth aluminium alloy, comprises the following steps:
(1) join in dehydrated alcohol by above-mentioned stearic acid, stirring and dissolving, described dehydrated alcohol and stearic envelope-bulk to weight ratio are 25-30:1;
(2) above-mentioned nano titanium oxide is joined its weight 10-12 doubly, in the ethanolic soln of 60-65%, magnetic agitation is even, adds above-mentioned stearic ethanolic soln, magnetic agitation 3-4 hour, dry at 120-125 DEG C, grinding, obtains stearic acid modified titanium dioxide;
(3) by above-mentioned cerous nitrate, lanthanum nitrate mixing, join in compound weight 10-16 times deionized water, stir, obtain earth solution;
(4) by above-mentioned tosic acid, polyoxyethylene glycol mixing, insulated and stirred 4-6 minute at 70-75 DEG C, mixes with above-mentioned earth solution, adds silane coupling agent KH560, magnetic agitation 20-30 minute, obtains rare earth solution of silane;
(5) by above-mentioned clorafin, Oleum Hippophae mixing, stir, join compound weight 3-4 doubly, in the ethanolic soln of 20-30%, raised temperature is 70-80 DEG C, insulated and stirred 6-10 minute, adds short and long-chain acyl triglyceride molecules, is stirred to normal temperature, obtains paraffin alcohol liquid;
(6) 40-50% of above-mentioned Sodium dodecylbenzene sulfonate weight is got, join in 180-200 times of deionized water, stir, add ten difluoro heptyl propyl trimethoxy silicanes, containing hydrogen silicone oil, 1000-1200 rev/min is stirred 2-3 hour, drip the Karstedt catalyzer of above-mentioned system weight 1-2%, stirring reaction 1-2 hour, obtains fluorinated silicone oil;
(7) remaining Sodium dodecylbenzene sulfonate is got, join in its weight 70-100 times deionized water, stir, drip the ammoniacal liquor of above-mentioned 25-28%, after dropwising, add 23 dimethyl aniline, stir, raised temperature is 50-60 DEG C, adds above-mentioned stearic acid modified titanium dioxide, insulated and stirred 10-20 minute, reduction temperature is 30-35 DEG C, add ammonium persulphate, insulated and stirred 10-12 hour, add above-mentioned paraffin alcohol liquid, stir, suction filtration, vacuum-drying 30-40 minute at 90-100 DEG C, obtains polymer modification titanium dioxide;
(8) join in fluorinated silicone oil by above-mentioned polymer modification titanium dioxide, add rare earth solution of silane, adjustment PH is 5-6, insulated and stirred 3-4 hour at 50-60 DEG C, adds each raw material of residue, stirs, obtain composite modified colloidal sol.
Described a kind of corrosive protection of aluminium alloy lift colloidal sol, the using method of this colloidal sol is:
Be immersed in by aluminium flake clean for surface treatment in this composite modified colloidal sol, carry out Best-Effort request plated film, namely repeatable operation obtains certain thickness uniform thin film, under being then placed in room temperature after dry 20-30min, under 125-130 DEG C of condition, cures 25-30min.
Advantage of the present invention is:
The film of gel formation of the present invention has good water resisting property:
Stearic acid contain a large amount of-COOH group, dehydration reaction can be there is with surface of inorganic particles-OH, also hydrophobicity-CH3 group can be introduced for TiO2, but modified TiO2 is poor at body surface sticking power, easy generation obscission, containing hydrogen silicone oil has good chemical stability and high hydrophobicity energy, can interact with inorganic particulate and form abundant microtexture, ten difluoro heptyl propyl trimethoxy silicanes contain hydrophobicity-CH3 and hydrolyzable-OCH3, it is utilized to fluoridize containing hydrogen silicone oil, containing hydrogen silicone oil generation dehydrogenation coupling reaction can be made, more excellent mechanical property is possessed under crosslinked action, make compound coating more stable, in addition, the hydrophobic methyl introduced also can increase the hydrophobic effect of coating,
The film of gel formation of the present invention has good non-corrosibility:
Micro/nano structure of the present invention has effectively intercepted air in water and has contacted with the direct of aluminium flake substrate, and the amount of oxygen making aluminium flake surface participate in reaction reduces, thus slow down the generation of aluminium flake surface film oxide; On the other hand, the reticulated structure formed by Si-O had in compound coating is combined with aluminium flake intimate surface, the fluoroalkyl of hydrophobic then points to corrodibility NaCl solution one end, in addition, the modifying titanium dioxide of compound coating surface compact possesses abundant surface microstructure and has low surface energy, and this plays a key effect to the protection against corrosion of coating;
The present invention introduces polyaniline in gel, make the reduction reaction of oxygen from the metal/corrosive medium interfacial migration of routine to polymkeric substance/corrosive medium interface, decrease the generation at metal/corrosive medium surface OH-, prevent the rising of metallic surface pH, serve good corrosion mitigating effect, effectively prevent the degraded of coating, peel off;
The present invention adds rare earth cerous nitrate, lanthanum nitrate in gel, effectively can improve the antiseptic property of metal, strengthen the protectiveness to metal.
Embodiment
The anticorrosion lift colloidal sol of a kind of rare earth aluminium alloy, it is made up of the raw material of following weight parts:
Clorafin 2, Oleum Hippophae 1, cerous nitrate 0.7, lanthanum nitrate 0.3, nano titanium oxide 10, stearic acid 0.8, Sodium dodecylbenzene sulfonate 0.2, ten difluoro heptyl propyl trimethoxy silicane 10, the ammoniacal liquor 0.7 of containing hydrogen silicone oil 20,25%, silane coupling agent KH5601,2,3 xylidines 90, ammonium persulphate 0.6, short and long-chain acyl triglyceride molecules 2, tosic acid 0.7, polyoxyethylene glycol 3, S-WAT 1;
A preparation method for the described anticorrosion lift colloidal sol of rare earth aluminium alloy, comprises the following steps:
(1) join in dehydrated alcohol by above-mentioned stearic acid, stirring and dissolving, described dehydrated alcohol and stearic envelope-bulk to weight ratio are 25:1;
(2) above-mentioned nano titanium oxide is joined its weight 10 times, 60% ethanolic soln in, magnetic agitation is even, adds above-mentioned stearic ethanolic soln, magnetic agitation 3 hours, dries at 120 DEG C, and grinding, obtains stearic acid modified titanium dioxide;
(3) by above-mentioned cerous nitrate, lanthanum nitrate mixing, join in compound weight 10 times of deionized waters, stir, obtain earth solution;
(4) by above-mentioned tosic acid, polyoxyethylene glycol mixing, at 70 DEG C, insulated and stirred 4 minutes, mixes with above-mentioned earth solution, adds silane coupling agent KH560, and magnetic agitation 20 minutes, obtains rare earth solution of silane;
(5) by above-mentioned clorafin, Oleum Hippophae mixing, stir, join compound weight 3 times, 20% ethanolic soln in, raised temperature is 70 DEG C, and insulated and stirred 6 minutes, adds short and long-chain acyl triglyceride molecules, be stirred to normal temperature, obtains paraffin alcohol liquid;
(6) 40% of above-mentioned Sodium dodecylbenzene sulfonate weight is got, join in 180 times of deionized waters, stir, add ten difluoro heptyl propyl trimethoxy silicanes, containing hydrogen silicone oil, 1000 revs/min are stirred 2 hours, drip the Karstedt catalyzer of above-mentioned system weight 1%, stirring reaction 1 hour, obtains fluorinated silicone oil;
(7) get remaining Sodium dodecylbenzene sulfonate, join in its weight 70 times of deionized waters, stir, drip the ammoniacal liquor of above-mentioned 25%, after dropwising, add 2,3 xylidines, stir, raised temperature is 50 DEG C, adds above-mentioned stearic acid modified titanium dioxide, insulated and stirred 10 minutes, reducing temperature is 30 DEG C, adds ammonium persulphate, insulated and stirred 10 hours, adds above-mentioned paraffin alcohol liquid, stirs, suction filtration, at 90 DEG C, vacuum-drying 30 minutes, obtains polymer modification titanium dioxide;
(8) above-mentioned polymer modification titanium dioxide is joined in fluorinated silicone oil, add rare earth solution of silane, regulate PH to be 5, insulated and stirred 3 hours at 50 DEG C, add each raw material of residue, stir, obtain composite modified colloidal sol.
Described a kind of corrosive protection of aluminium alloy lift colloidal sol, the using method of this colloidal sol is:
Be immersed in by aluminium flake clean for surface treatment in this composite modified colloidal sol, carry out Best-Effort request plated film, namely repeatable operation obtains certain thickness uniform thin film, under being then placed in room temperature after dry 20min, under 125 DEG C of conditions, cures 25min.
Performance test:
Water-intake rate: according to the method described above surface treatment agent of the present invention is coated on the aluminum alloy surface being of a size of 5cm × 6cm, soaks 48h in the deionized water of 25 DEG C, and recording water-intake rate is 10.2%;
Sticking power: 1 grade;
Erosion resistance: neutral salt spray test 72 hours, be corroded area 2.0%;
Hardness: 3H.
Claims (3)
1. the anticorrosion lift colloidal sol of rare earth aluminium alloy, it is characterized in that, it is made up of the raw material of following weight parts:
Clorafin 2-3, Oleum Hippophae 1-2, cerous nitrate 0.7-1, lanthanum nitrate 0.3-1, nano titanium oxide 10-12, stearic acid 0.8-1, Sodium dodecylbenzene sulfonate 0.2-0.4, ten difluoro heptyl propyl trimethoxy silicane 10-18, the ammoniacal liquor 0.7-1 of containing hydrogen silicone oil 20-30,25-28%, silane coupling agent KH5601-2,23 dimethyl aniline 90-100, ammonium persulphate 0.6-1, short and long-chain acyl triglyceride molecules 2-3, tosic acid 0.7-2, polyoxyethylene glycol 3-4, S-WAT 1-2.
2. a preparation method for the anticorrosion lift colloidal sol of rare earth aluminium alloy as claimed in claim 1, is characterized in that, comprise the following steps:
(1) join in dehydrated alcohol by above-mentioned stearic acid, stirring and dissolving, described dehydrated alcohol and stearic envelope-bulk to weight ratio are 25-30:1;
(2) above-mentioned nano titanium oxide is joined its weight 10-12 doubly, in the ethanolic soln of 60-65%, magnetic agitation is even, adds above-mentioned stearic ethanolic soln, magnetic agitation 3-4 hour, dry at 120-125 DEG C, grinding, obtains stearic acid modified titanium dioxide;
(3) by above-mentioned cerous nitrate, lanthanum nitrate mixing, join in compound weight 10-16 times deionized water, stir, obtain earth solution;
(4) by above-mentioned tosic acid, polyoxyethylene glycol mixing, insulated and stirred 4-6 minute at 70-75 DEG C, mixes with above-mentioned earth solution, adds silane coupling agent KH560, magnetic agitation 20-30 minute, obtains rare earth solution of silane;
(5) by above-mentioned clorafin, Oleum Hippophae mixing, stir, join compound weight 3-4 doubly, in the ethanolic soln of 20-30%, raised temperature is 70-80 DEG C, insulated and stirred 6-10 minute, adds short and long-chain acyl triglyceride molecules, is stirred to normal temperature, obtains paraffin alcohol liquid;
(6) 40-50% of above-mentioned Sodium dodecylbenzene sulfonate weight is got, join in 180-200 times of deionized water, stir, add ten difluoro heptyl propyl trimethoxy silicanes, containing hydrogen silicone oil, 1000-1200 rev/min is stirred 2-3 hour, drip the Karstedt catalyzer of above-mentioned system weight 1-2%, stirring reaction 1-2 hour, obtains fluorinated silicone oil;
(7) remaining Sodium dodecylbenzene sulfonate is got, join in its weight 70-100 times deionized water, stir, drip the ammoniacal liquor of above-mentioned 25-28%, after dropwising, add 23 dimethyl aniline, stir, raised temperature is 50-60 DEG C, adds above-mentioned stearic acid modified titanium dioxide, insulated and stirred 10-20 minute, reduction temperature is 30-35 DEG C, add ammonium persulphate, insulated and stirred 10-12 hour, add above-mentioned paraffin alcohol liquid, stir, suction filtration, vacuum-drying 30-40 minute at 90-100 DEG C, obtains polymer modification titanium dioxide;
(8) join in fluorinated silicone oil by above-mentioned polymer modification titanium dioxide, add rare earth solution of silane, adjustment PH is 5-6, insulated and stirred 3-4 hour at 50-60 DEG C, adds each raw material of residue, stirs, obtain composite modified colloidal sol.
3. a kind of corrosive protection of aluminium alloy lift colloidal sol according to claim 1, it is characterized in that, the using method of this colloidal sol is:
Be immersed in by aluminium flake clean for surface treatment in this composite modified colloidal sol, carry out Best-Effort request plated film, namely repeatable operation obtains certain thickness uniform thin film, under being then placed in room temperature after dry 20-30min, under 125-130 DEG C of condition, cures 25-30min.
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| CN107236422A (en) * | 2017-07-24 | 2017-10-10 | 杨洁磊 | A kind of preparation method of rare-earth sol type water paint |
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