CN109609944A - 一种铝合金本色无铬钝化处理剂及其制备方法 - Google Patents
一种铝合金本色无铬钝化处理剂及其制备方法 Download PDFInfo
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 57
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims description 14
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000002253 acid Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- -1 diisobutyl sodium naphthalene sulfonate Chemical compound 0.000 claims abstract description 25
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 23
- WBFZBNKJVDQAMA-UHFFFAOYSA-D dipotassium;zirconium(4+);pentacarbonate Chemical compound [K+].[K+].[Zr+4].[Zr+4].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O WBFZBNKJVDQAMA-UHFFFAOYSA-D 0.000 claims abstract description 23
- 150000001261 hydroxy acids Chemical class 0.000 claims abstract description 23
- UWNADWZGEHDQAB-UHFFFAOYSA-N i-Pr2C2H4i-Pr2 Natural products CC(C)CCC(C)C UWNADWZGEHDQAB-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 23
- 239000011734 sodium Substances 0.000 claims abstract description 23
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 claims abstract description 22
- IEQAICDLOKRSRL-UHFFFAOYSA-N 2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-(2-dodecoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethanol Chemical compound CCCCCCCCCCCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO IEQAICDLOKRSRL-UHFFFAOYSA-N 0.000 claims abstract description 21
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 20
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims abstract description 17
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims abstract description 17
- 235000019394 potassium persulphate Nutrition 0.000 claims abstract description 17
- 150000004040 pyrrolidinones Chemical class 0.000 claims abstract description 16
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 14
- 239000011737 fluorine Substances 0.000 claims abstract description 14
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 235000006408 oxalic acid Nutrition 0.000 claims abstract description 11
- 150000000703 Cerium Chemical class 0.000 claims abstract description 10
- 150000007522 mineralic acids Chemical class 0.000 claims abstract description 10
- 150000007524 organic acids Chemical class 0.000 claims abstract description 9
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims abstract description 7
- ATZQZZAXOPPAAQ-UHFFFAOYSA-M caesium formate Chemical compound [Cs+].[O-]C=O ATZQZZAXOPPAAQ-UHFFFAOYSA-M 0.000 claims abstract description 7
- FXNONNRUNQPNLF-UHFFFAOYSA-N cerium;2-ethylhexanoic acid Chemical compound [Ce].CCCCC(CC)C(O)=O.CCCCC(CC)C(O)=O.CCCCC(CC)C(O)=O FXNONNRUNQPNLF-UHFFFAOYSA-N 0.000 claims abstract description 7
- 235000019253 formic acid Nutrition 0.000 claims abstract description 7
- 229960001759 cerium oxalate Drugs 0.000 claims abstract description 6
- ZMZNLKYXLARXFY-UHFFFAOYSA-H cerium(3+);oxalate Chemical compound [Ce+3].[Ce+3].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O ZMZNLKYXLARXFY-UHFFFAOYSA-H 0.000 claims abstract description 6
- VGBWDOLBWVJTRZ-UHFFFAOYSA-K cerium(3+);triacetate Chemical compound [Ce+3].CC([O-])=O.CC([O-])=O.CC([O-])=O VGBWDOLBWVJTRZ-UHFFFAOYSA-K 0.000 claims abstract description 6
- 235000011054 acetic acid Nutrition 0.000 claims abstract description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 6
- 229910052700 potassium Inorganic materials 0.000 claims description 6
- 239000011591 potassium Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000005238 degreasing Methods 0.000 claims description 2
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims 1
- XDBSEZHMWGHVIL-UHFFFAOYSA-M hydroxy(dioxo)vanadium Chemical compound O[V](=O)=O XDBSEZHMWGHVIL-UHFFFAOYSA-M 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 11
- 238000005260 corrosion Methods 0.000 abstract description 11
- 238000012545 processing Methods 0.000 abstract description 10
- 238000000576 coating method Methods 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 4
- 239000011651 chromium Substances 0.000 description 19
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 18
- 229910052804 chromium Inorganic materials 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 15
- 238000012360 testing method Methods 0.000 description 15
- 238000002161 passivation Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 10
- 150000003839 salts Chemical class 0.000 description 9
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 8
- 239000007921 spray Substances 0.000 description 8
- 239000010410 layer Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 229910001430 chromium ion Inorganic materials 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 150000004968 peroxymonosulfuric acids Chemical class 0.000 description 4
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 4
- 150000005846 sugar alcohols Chemical class 0.000 description 4
- 229910052684 Cerium Inorganic materials 0.000 description 3
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 3
- 238000004532 chromating Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 150000003233 pyrroles Chemical class 0.000 description 3
- PHXKQKZYWQUGLW-UHFFFAOYSA-N 1h-pyrrole;pyrrolidin-2-one Chemical compound C=1C=CNC=1.O=C1CCCN1 PHXKQKZYWQUGLW-UHFFFAOYSA-N 0.000 description 2
- 229910001008 7075 aluminium alloy Inorganic materials 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- LKDRXBCSQODPBY-AMVSKUEXSA-N L-(-)-Sorbose Chemical compound OCC1(O)OC[C@H](O)[C@@H](O)[C@@H]1O LKDRXBCSQODPBY-AMVSKUEXSA-N 0.000 description 2
- 241000220324 Pyrus Species 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 235000005811 Viola adunca Nutrition 0.000 description 2
- 240000009038 Viola odorata Species 0.000 description 2
- 235000013487 Viola odorata Nutrition 0.000 description 2
- 235000002254 Viola papilionacea Nutrition 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 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 description 2
- OZECDDHOAMNMQI-UHFFFAOYSA-H cerium(3+);trisulfate Chemical compound [Ce+3].[Ce+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O OZECDDHOAMNMQI-UHFFFAOYSA-H 0.000 description 2
- 229910000333 cerium(III) sulfate Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000021017 pears Nutrition 0.000 description 2
- 150000003235 pyrrolidines Chemical class 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000001384 succinic acid Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 244000178870 Lavandula angustifolia Species 0.000 description 1
- 235000010663 Lavandula angustifolia Nutrition 0.000 description 1
- 244000172533 Viola sororia Species 0.000 description 1
- LZQHZOIDAMYHSS-UHFFFAOYSA-N [F].[Ti] Chemical compound [F].[Ti] LZQHZOIDAMYHSS-UHFFFAOYSA-N 0.000 description 1
- FRHOZLBTKXGMDH-UHFFFAOYSA-N [Zr].[F] Chemical compound [Zr].[F] FRHOZLBTKXGMDH-UHFFFAOYSA-N 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Chemical class O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- GPRSOIDYHMXAGW-UHFFFAOYSA-N cyclopenta-1,3-diene cyclopentanecarboxylic acid iron Chemical compound [CH-]1[CH-][CH-][C-]([CH-]1)C(=O)O.[CH-]1C=CC=C1.[Fe] GPRSOIDYHMXAGW-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000001102 lavandula vera Substances 0.000 description 1
- 235000018219 lavender Nutrition 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
- C23C22/44—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates containing also fluorides or complex fluorides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/46—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing oxalates
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
本发明公开了一种铝合金本色无铬钝化处理剂,由如下重量百分比的原料制成:过硫酸钾5~10%,山梨糖醇1~5%,偏钒酸铵0.5~1.5%,二异丁基萘磺酸钠0.1~0.5%,碳酸锆钾0.1~0.5%,聚氧乙烯月桂醇醚0.05~0.08%,吡咯烷酮羟酸钠0.01~0.05%,铈盐0.05~0.1%,无机酸3~10%,有机酸0.5~2%,余量为水;所述的铈盐选自草酸铈、辛酸铈、甲酸铈和乙酸铈的一种或几种的混合物;所述的无机酸选自氟锆酸、氟钛酸的一种或其混合物;所述的有机酸选自甲酸、乙酸和草酸中的一种。本发明无铬钝化处理剂在铝合金表面形成的无铬钝化膜为无色透明,不改变铝合金的本色;经过本发明铝合金本色无铬钝化处理剂处理后,其耐蚀性大大提高,可以应用于一些不需要表面涂装的场合。
Description
技术领域
本发明属于金属表面处理领域,具体涉及一种铝合金本色无铬钝化处理剂及其制备方法。
背景技术
金属表面处理是提高钢铁抗大气腐蚀的有效方法。但在潮湿环境中处理层容易发生腐蚀,使表面形成腐蚀产物或变成灰暗色,影响外观,必须进行钝化。钢铁、铝等金属表面生成致密氧化物保护层,从而阻止与金属进一步反应的现象叫钝化现象。当前使用最广泛的是铬酸盐钝化处理。主要原因是该工艺简单、成本低、抗蚀性能好。经铬酸盐处理后形成铬/基体金属混合氧化物膜层,膜层中铬主要以六价和三价形式存在。由于六价铬是致癌物质,对人体及环境都有严重危害,随着人们环境意识的增强,必须研究一种取代铬酸盐钝化的方法。
钝化液及钝化后的产品中不含铬及铬离子,称为无铬钝化。无铬钝化液中不含铬及铬的任何价位离子,在源头上控制了铬离子的存在,使生产企业做到了使用新产品进行清洁生产的目的,同时,钝化后的产品不含任何铬离子,也保证了最终产品符合环保要求,不会存在对人体有害的铬。
目前,现有技术中已经公开了很多关于铝合金无铬钝化的技术方案。例如,申请公布号CN 104561972 A的中国专利申请公开了一种铸铝合金工件涂装前无铬钝化处理剂,由如下重量百分比的原料制成:过硫酸钾5~10%,山梨糖醇1~5%,偏钒酸铵0.5~1.5%,二异丁基萘磺酸钠0.1~0.5%,碳酸锆钾0.1~0.5%,二茂铁甲酸0.05~0.08%,聚氧乙烯月桂醇醚0.05~0.08%,吡咯烷酮羟酸钠0.01~0.05%,余量为水。经过该处理剂处理的铸铝合金,在表面生成一层蓝紫色的无铬钝化膜,该钝化膜与传统铬酸盐钝化膜相比,具有更优异的耐蚀性能和涂层结合力性能,可以完全替代铬酸盐钝化技术;处理工艺简单,处理时间短,施工方便,适用于规模化工业生产。申请公布号CN 105420710 A的中国专利申请公开了一种用于铝型材表面处理的金色无铬钝化液,钝化液由水、含铈化合物、无机酸、有机酸和表面活性剂混合而成。经实验测定,样品裸膜盐雾试验大于48h,喷漆后样品醋酸盐雾实验大于1000小时,百格测试无脱落,沸水测试无起泡无脱落。虽然上述公开的铝合金无铬钝化技术均可以替代传统的六价铬钝化、具有优异的耐腐蚀性能,但是铝合金经过相应处理后,原本表面的颜色均发生改变,使得无铬钝化在一些需要铝合金本色应用的场合无法正常使用。因此,在现有技术的基础上研究开发出一种不改变铝合金本色的无铬钝化处理剂具有重要的实际意义。
发明内容
为克服现有技术的不足,本发明的目的在于提供一种耐蚀性能更优的铝合金本色无铬钝化处理剂及其制备方法。
为实现上述发明目的,本发明采用以下技术方案:
一种铝合金本色无铬钝化处理剂,由如下重量百分比的原料制成:过硫酸钾5~10%,山梨糖醇1~5%,偏钒酸铵0.5~1.5%,二异丁基萘磺酸钠0.1~0.5%,碳酸锆钾0.1~0.5%,聚氧乙烯月桂醇醚0.05~0.08%,吡咯烷酮羟酸钠0.01~0.05%,铈盐 0.05~0.1%,无机酸 3~10%,有机酸 0.5~2%,余量为水。
所述的铈盐选自草酸铈、辛酸铈、甲酸铈和乙酸铈的一种或几种的混合物。
所述的无机酸选自氟锆酸、氟钛酸的一种或其混合物。
所述的有机酸选自甲酸、乙酸和草酸中的一种。
优选地,一种铝合金本色无铬钝化处理剂,由如下重量百分比的原料制成:过硫酸钾5~10%,山梨糖醇1~5%,偏钒酸铵0.5~1.5%,二异丁基萘磺酸钠0.1~0.5%,碳酸锆钾0.1~0.5%,聚氧乙烯月桂醇醚0.05~0.08%,吡咯烷酮羟酸钠0.01~0.05%,草酸铈 0.05~0.1%,氟锆酸 3~10%,草酸 0.5~2%,余量为水。
优选地,一种铝合金本色无铬钝化处理剂,由如下重量百分比的原料制成:过硫酸钾5~10%,山梨糖醇1~5%,偏钒酸铵0.5~1.5%,二异丁基萘磺酸钠0.1~0.5%,碳酸锆钾0.1~0.5%,聚氧乙烯月桂醇醚0.05~0.08%,吡咯烷酮羟酸钠0.01~0.05%,辛酸铈0.05~0.1%,氟钛酸 3~10%,草酸 0.5~2%,余量为水。
优选地,一种铝合金本色无铬钝化处理剂,由如下重量百分比的原料制成:过硫酸钾5~10%,山梨糖醇1~5%,偏钒酸铵0.5~1.5%,二异丁基萘磺酸钠0.1~0.5%,碳酸锆钾0.1~0.5%,聚氧乙烯月桂醇醚0.05~0.08%,吡咯烷酮羟酸钠0.01~0.05%,甲酸铈 0.05~0.1%,氟锆酸和氟钛酸的混合物 3~10%,甲酸 0.5~2%,余量为水。
优选地,一种铝合金本色无铬钝化处理剂,由如下重量百分比的原料制成:过硫酸钾5~10%,山梨糖醇1~5%,偏钒酸铵0.5~1.5%,二异丁基萘磺酸钠0.1~0.5%,碳酸锆钾0.1~0.5%,聚氧乙烯月桂醇醚0.05~0.08%,吡咯烷酮羟酸钠0.01~0.05%,乙酸铈 0.05~0.1%,氟锆酸和氟钛酸的混合物3~10%,乙酸 0.5~2%,余量为水。
本发明还提供了铝合金本色无铬钝化处理剂的制备方法,包括以下步骤:将过硫酸钾与山梨糖醇在反应釜中加入水混溶,然后再加入偏钒酸铵和二异丁基萘磺酸钠,搅拌溶解后溶液静置2小时;依次加入碳酸锆钾、聚氧乙烯月桂醇醚、吡咯烷酮羟酸钠、铈盐、无机酸和有机酸后搅拌溶解后静置30分钟,即得。
本发明铝合金本色无铬钝化处理剂的用法:铝合金工件经过脱脂洗净后,用质量浓度为3%~20%的本发明处理剂在20~50℃的条件下处理10~60分钟,处理方式可为喷淋法或浸渍法。水洗烘干后即可进入涂装工序。
本发明的铝合金本色无铬钝化处理剂在铝合金表面可以生成一层无色透明的均匀致密钝化膜,并且大大提高了处理后铝合金的耐蚀性。与现有技术相比,本发明的有益效果表现在:1、在铝合金表面形成的无铬钝化膜为无色透明,不改变铝合金的本色;2、经过本发明铝合金本色无铬钝化处理剂处理后,其耐蚀性大大提高,可以应用于一些不需要表面涂装的场合;3、本发明处理工艺简单,处理时间短,施工方便,适用于规模化工业生产。
具体实施方式
下面通过实施例对本发明作进一步描述。
实施例1:
一种铝合金本色无铬钝化处理剂,由如下重量百分比的原料制成:过硫酸钾10%,山梨糖醇1%,偏钒酸铵1.5%,二异丁基萘磺酸钠0.1%,碳酸锆钾0.5%,聚氧乙烯月桂醇醚0.05%,吡咯烷酮羟酸钠0.05%,草酸铈 0.05%,氟锆酸 10%,草酸 0.5%,余量为水。
上述的铝合金本色无铬钝化处理剂的制备方法,包括以下步骤:将过硫酸钾与山梨糖醇在反应釜中加入水混溶,然后再加入偏钒酸铵和二异丁基萘磺酸钠,搅拌溶解后溶液静置2小时;依次加入碳酸锆钾、聚氧乙烯月桂醇醚、吡咯烷酮羟酸钠、铈盐、无机酸和有机酸后搅拌溶解后静置30分钟,即得。
实施例2:
一种铝合金本色无铬钝化处理剂,由如下重量百分比的原料制成:过硫酸钾5%,山梨糖醇5%,偏钒酸铵0.5%,二异丁基萘磺酸钠0.5%,碳酸锆钾0.1%,聚氧乙烯月桂醇醚0.08%,吡咯烷酮羟酸钠0.01%,辛酸铈0.1%,氟钛酸 3%,草酸 2%,余量为水。
上述的铝合金本色无铬钝化处理剂的制备方法同实施例1。
实施例3:
一种铝合金本色无铬钝化处理剂,由如下重量百分比的原料制成:过硫酸钾8%,山梨糖醇2%,偏钒酸铵1%,二异丁基萘磺酸钠0.3%,碳酸锆钾0.3%,聚氧乙烯月桂醇醚0.05%,吡咯烷酮羟酸钠0.03%,甲酸铈 0.08%,氟锆酸和氟钛酸质量比1:1的混合物 5%,甲酸 1.5%,余量为水。
上述的铝合金本色无铬钝化处理剂的制备方法同实施例1。
实施例4:
一种铝合金本色无铬钝化处理剂,由如下重量百分比的原料制成:过硫酸钾10%,山梨糖醇1%,偏钒酸铵1%,二异丁基萘磺酸钠0.2%,碳酸锆钾0.4%,聚氧乙烯月桂醇醚0.08%,吡咯烷酮羟酸钠0.03%,乙酸铈 0.1%,氟锆酸和氟钛酸质量比3:1的混合物3%,乙酸 0.5%,余量为水。
上述的铝合金本色无铬钝化处理剂的制备方法同实施例1。
对比例1:
一种铝合金无铬钝化处理剂,由如下重量百分比的原料制成:过硫酸钾10%,山梨糖醇1%,偏钒酸铵1.5%,二异丁基萘磺酸钠0.1%,碳酸锆钾0.5%,聚氧乙烯月桂醇醚0.05%,吡咯烷酮羟酸钠0.05%,硝酸铈 0.05%,氟锆酸 10%,草酸 0.5%,余量为水。
对比例1铝合金无铬钝化处理剂的制备方法同实施例1,区别在于用硝酸铈代替草酸铈。
对比例2:
一种铝合金无铬钝化处理剂,由如下重量百分比的原料制成:过硫酸钾5%,山梨糖醇5%,偏钒酸铵0.5%,二异丁基萘磺酸钠0.5%,碳酸锆钾0.1%,聚氧乙烯月桂醇醚0.08%,吡咯烷酮羟酸钠0.01%,辛酸铈0.1%,氟钛酸 3%,对苯二甲酸 2%,余量为水。
对比例2铝合金无铬钝化处理剂的制备方法同实施例2,区别在于用对苯二甲酸代替草酸。
对比例3:
一种铝合金无铬钝化处理剂,由如下重量百分比的原料制成:过硫酸钾8%,山梨糖醇2%,偏钒酸铵1%,二异丁基萘磺酸钠0.3%,碳酸锆钾0.3%,聚氧乙烯月桂醇醚0.05%,吡咯烷酮羟酸钠0.03%,甲酸铈 0.08%, 磷酸5%,甲酸 1.5%,余量为水。
对比例3铝合金无铬钝化处理剂的制备方法同实施例3,区别在于用磷酸代替氟锆酸和氟钛酸质量比1:1的混合物。
对比例4:
一种铝合金无铬钝化处理剂,由如下重量百分比的原料制成:过硫酸钾10%,山梨糖醇1%,偏钒酸铵1%,二异丁基萘磺酸钠0.2%,碳酸锆钾0.4%,聚氧乙烯月桂醇醚0.08%,吡咯烷酮羟酸钠0.03%,硫酸铈 0.1%,氟锆酸和氟钛酸质量比3:1的混合物3%,丁二酸 0.5%,余量为水。
对比例4铝合金无铬钝化处理剂的制备方法同实施例4,区别在于用硫酸铈代替乙酸铈,用丁二酸代替乙酸。
对比试验数据如下:
用本发明实施例1~4的铝合金本色无铬钝化处理剂和对比例1~4的无铬钝化剂分别配制质量浓度10%的溶液,分别对7075铝合金样件进行钝化处理,每组数量5个,处理温度均为40℃,处理时间均为30min,处理完毕后水洗自然晾干即可。参考GB/T 6458-1986《金属覆盖层 中性盐雾试验(NSS试验)》中规定的方法,对各组处理后的铝合金表面的无铬钝化膜进行性能对比测试。中性盐雾试验(NSS)是在特定的试验箱内,将含有(5±0.5)%氯化钠、pH值为6.5~7.2的盐水通过喷雾装置进行喷雾,让盐雾沉降到待测试验件上,经过一定时间观察其表面腐蚀状态。试验箱的温度要求在(35±2)℃,湿度大于95%,降雾量为1~2mL/(h·cm2),喷嘴压力为78.5~137.3kPa。盐雾试验时将各组处理过的样件放置于同一盐雾试验箱中,并合理摆放以保证试验各项参数的一致性,结果取平均值如表1和表2所示:
表1
检测项目 | 实施例1 | 实施例2 | 实施例3 | 实施例4 | 检测标准 |
外观 | 本色 | 本色 | 本色 | 本色 | 目测 |
中性盐雾试验 | 80h后开始腐蚀 | 86h后开始腐蚀 | 92h后开始腐蚀 | 96h后开始腐蚀 | GB6458-1986 |
表2
检测项目 | 对比例1 | 对比例2 | 对比例3 | 对比例4 | 检测标准 |
外观 | 淡蓝紫色 | 淡紫色 | 淡蓝紫色 | 淡蓝色 | 目测 |
中性盐雾试验 | 60h后开始腐蚀 | 65h后开始腐蚀 | 73h后开始腐蚀 | 75h后开始腐蚀 | GB6458-1986 |
从以上试验结果可以看出,7075铝合金经过本发明无铬钝化处理剂处理后,在表面生成一层无色透明的无铬钝化膜,该钝化膜不改变铝合金的本色,具有非常优异的耐蚀性能。通过对比例的试验结果,可知本发明通过选择特定的铈盐、无机酸和有机酸的进行配合,才能达到不改变铝合金本色的处理效果,并且不影响无铬钝化膜的耐蚀性能。
以上仅为本发明的较佳实施例而已,并非用来限定本发明的实施范围。即凡依本发明申请专利范围的内容所作的等效变化与修饰,只要不偏离或超越本权利要求书所定义的范围,均应属于本发明的保护范围。
Claims (7)
1.一种铝合金本色无铬钝化处理剂,其特征在于,由如下重量百分比的原料制成:过硫酸钾5~10%,山梨糖醇1~5%,偏钒酸铵0.5~1.5%,二异丁基萘磺酸钠0.1~0.5%,碳酸锆钾0.1~0.5%,聚氧乙烯月桂醇醚0.05~0.08%,吡咯烷酮羟酸钠0.01~0.05%,铈盐 0.05~0.1%,无机酸 3~10%,有机酸 0.5~2%,余量为水;所述的铈盐选自草酸铈、辛酸铈、甲酸铈和乙酸铈的一种或几种的混合物;所述的无机酸选自氟锆酸、氟钛酸的一种或其混合物;所述的有机酸选自甲酸、乙酸和草酸中的一种。
2.根据权利要求1所述的一种铝合金本色无铬钝化处理剂,其特征在于,由如下重量百分比的原料制成:过硫酸钾5~10%,山梨糖醇1~5%,偏钒酸铵0.5~1.5%,二异丁基萘磺酸钠0.1~0.5%,碳酸锆钾0.1~0.5%,聚氧乙烯月桂醇醚0.05~0.08%,吡咯烷酮羟酸钠0.01~0.05%,草酸铈 0.05~0.1%,氟锆酸 3~10%,草酸 0.5~2%,余量为水。
3.根据权利要求1所述的一种铝合金本色无铬钝化处理剂,其特征在于,由如下重量百分比的原料制成:过硫酸钾5~10%,山梨糖醇1~5%,偏钒酸铵0.5~1.5%,二异丁基萘磺酸钠0.1~0.5%,碳酸锆钾0.1~0.5%,聚氧乙烯月桂醇醚0.05~0.08%,吡咯烷酮羟酸钠0.01~0.05%,辛酸铈0.05~0.1%,氟钛酸 3~10%,草酸 0.5~2%,余量为水。
4.根据权利要求1所述的一种铝合金本色无铬钝化处理剂,其特征在于,由如下重量百分比的原料制成:过硫酸钾5~10%,山梨糖醇1~5%,偏钒酸铵0.5~1.5%,二异丁基萘磺酸钠0.1~0.5%,碳酸锆钾0.1~0.5%,聚氧乙烯月桂醇醚0.05~0.08%,吡咯烷酮羟酸钠0.01~0.05%,甲酸铈 0.05~0.1%,氟锆酸和氟钛酸的混合物 3~10%,甲酸 0.5~2%,余量为水。
5.根据权利要求1所述的一种铝合金本色无铬钝化处理剂,其特征在于,由如下重量百分比的原料制成:过硫酸钾5~10%,山梨糖醇1~5%,偏钒酸铵0.5~1.5%,二异丁基萘磺酸钠0.1~0.5%,碳酸锆钾0.1~0.5%,聚氧乙烯月桂醇醚0.05~0.08%,吡咯烷酮羟酸钠0.01~0.05%,乙酸铈 0.05~0.1%,氟锆酸和氟钛酸的混合物3~10%,乙酸 0.5~2%,余量为水。
6.根据权利要求1-5任一项所述的一种铝合金本色无铬钝化处理剂的制备方法,其特征在于,包括以下步骤:将过硫酸钾与山梨糖醇在反应釜中加入水混溶,然后再加入偏钒酸铵和二异丁基萘磺酸钠,搅拌溶解后溶液静置2小时;依次加入碳酸锆钾、聚氧乙烯月桂醇醚、吡咯烷酮羟酸钠、铈盐、无机酸和有机酸后搅拌溶解后静置30分钟,即得。
7.根据权利要求1-5任一项所述的一种铝合金本色无铬钝化处理剂的用法,其特征在于,铝合金工件经过脱脂洗净后,用质量浓度为3%~20%的处理剂在20~50℃的条件下处理10~60分钟。
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