A7A7
^----4------、— 裝-- V； (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部中央標準局員工消费合作社印製 A7 B7 五、發明説明（2) 鋁合金耐蚀標準，所使用配方之主要成份為硝酸鈉、氟化 氫銨、硫酸及硝酸；上述配方除可以浸泡方式處理金屬， 亦可加入二氧化矽，使其成為黏稠狀之氧化物去除劑，對 於不適合全面浸泡處理之工件，可使用黏稠狀之氧化物去 除劑以進行局部處理，惟該專利對於化學轉化劑中鉻化合 物量之減少並未有任何敘述。 發明之概怵： 本發明之目的，在提供一種鋁合金表面處理之改良方 法，可以提昇鋁合金鉻酸鹽化學轉化表面處理之耐蝕性， 使原本未達美軍軍規鹽霧耐蝕規範要求之鋁合金鉻酸鹽皮 膜’因本發明之強化效果得以符合美軍軍規财触標準。 本發明之另一目的，在提供一種銘合金表面處理之改 良方法，可以減少鉻酸鹽化學轉化表面處理步驟中，化學 處理液所含鉻酸鹽之用量。卻不會降低該表處之鹽霧耐蚀 性〇 本發明所述之銘合金表面處理之改良方法，其係用於 改善表面上具有鉻酸鹽皮膜鋁合金之耐蝕性。該表面上具 有絡酸鹽皮膜之鋁合金，經進一步以水性PU(polyurethane， 聚胺基甲酸酯）處理液處理，以使該鉻酸鹽皮膜上形成一 PU 薄膜，該水性PU處理液含有（1)水分散性聚胺基甲酸乙酯樹 脂5-15重量百分比、（2)交聯劑0.1-5重量百分比、以及（3) 水80-94.9重量百分比。 本發明之方法，可以強化航空器材及武器系統所採用 4 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公釐） 丨丨^-------丨裝----，——17-----^ 線 '( ί . (請先閱讀背面之注意事項再填寫本頁) 經濟部中央標準局貝工消費合作社印-m A7 B7 五、發明説明（3 ) -- 之同強度熱處理類鋁合金之耐蝕性，例如可以強化2〇〇〇 或700G系列銘合金之耐蚀性能，使其耐蚀性能提昇至達到 美軍軍規之標準；本發明之方法可以強化銘合金鉻酸鹽皮 膜之耐蚀性，能達到降低鉻酸用量且不影響轉化皮膜之耐 蝕品質；本發明亦可降低化學轉化液中鉻酸化合物之使用 量達一般使用量之30%，減少鉻酸鹽之使用量，藉以降低此 鋁合金表面處理過程對環境之污染衝擊。 本發明之改良方法，係在補強所習知之鋁合金鉻酸鹽 皮膜耐蝕性，在鋁合金鉻酸鹽皮膜原有製程完成後，增加 一特殊水性PU處理液浸泡步騾，而完成強化鋁合金鉻酸鹽 轉化皮膜之耐鹽霧性能，雖然所使用之水性PU樹脂會在銘 合金表面形成一極薄之保護膜，只要水性Pu溶液濃度控制 得宜並不會影響油漆附著力及表處之接觸電阻。 本發明具有以下幾項特點： 1·可提昇鉻酸鹽轉化皮膜之耐蝕性。 2.本發明因使用水性樹脂，不存在或僅含微量有機揮發性 溶劑，不致對環境產生污染。 3 .可增加鉻酸鹽轉化皮膜在昇溫環境下之穩定性。 4.本發明所提供之防蚀性皮膜與防蚀底漆之相容性甚佳可 做為塗裝系統與金屬表面之中介皮膜，藉以提昇油漆之 附著力。 5 ·本發明可降低化學轉化液中鉻酸鹽（如重鉻酸_ K2Cn〇7) 之使用量，藉以減少銘合金化學轉化製程對環境之污染 影響。 、}—裝----.--訂-----^ 1線 · . ί、 、 (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局貝工消費合作社印製 A7 — - B7 1 - __ 五、發明説明（千） 一 發明之詳細説明： 本發明之鋁合金表面處理之改良方法，提供—種以膠 體狀之水性胺基甲酸乙酯彈性體（例如：水性聚胺基甲酸/乙 酉曰樹脂）為主之表面處理方法，由於水性ρϋ可藉由交聯劑 (cross linking agent)在鉻酸鹽皮膜上形成緻密之薄膜， 將原本並不十分完整之鉻酸鹽皮膜缺陷遮蔽，並藉由所含 腐蝕抑制劑（corrosion inhibitor)^化鉻酸鹽皮膜整體之 对姓性。 根據本發明之改良方法，所使用之水分散性聚胺基甲 酸乙酯樹脂可以為芳香族（aromatic)、脂肪族（aliphatic)或是 環狀脂肪族（alicyclic)之異氰酸共聚合物（is〇cyanate copolymer)，其中並含有某些腐蝕抑制劑如：鋅、鳃、鈉或 _之可4性或不可溶性鹽類如鎢酸鹽、翻酸鹽、訊酸鹽、 鉻酸鹽等。 本發明使用之聚胺基甲酸乙酯樹脂為各種異氰酸鹽之 預聚合物（prepolymers)例如：2,4-二異氰酸甲苯（2,4- toluene diis〇Cyanate) 、 2,6-二異氰酸甲苯（2,6_toluene diisocyanate)、1，4-二異氰酸環已^(i,4_cyclohexane diisocyanate) 一 琢已基曱燒（dicyclohexylmethane)、4,4，-二異氰酸鹽（4,4’-diisocyanate)、二異氰酸對甲苯（Xylene diisocyanate)等。使用芳香族二異氰酸鹽類作為二異氰酸 鹽，通常因其曝露在紫外線中易黃化，若不希望表處因黃 化而水解應避免使用。脂肪族及環狀脂肪族二異氰酸鹽通 常對紫外線所造成之黃化作用具有甚佳之抵抗力，故本發 _ 6 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (讀先閱讀背面之注意^項再填寫本頁} -訂 -線· 經濟部中央標準局員工消費合作衽印製 A7 _____B7_ 五、發明説明（f) 明所使用之二異氰酸鹽，以脂肪族或環狀脂肪族二異氰酸 鹽較佳。 本發明所使用之聚胺基甲酸乙酯，係由前述所提及之 單體所組成的一種穩定性佳之液體懸浮狀尿素—胺基曱酸 乙酯（urea-urethane)高分子鹽類，此種分散液可使用水稀 釋。本發明所使用高分子鹽類係由羧酸官能基，以及三級 聚酿胺所組成，係一種含有異氰酸基之胺基甲酸乙酯預聚 合物。此預聚合物是一種聚氰胺和多元醇（p〇lyol)之反應產 物，所具有之酸値（acid value)約為5~18，且亦為一種非中 和態之離子。此種聚異氰胺合成後須使用一級、二級或三 級胺加以中和方可形成穩定之液狀膠體懸浮物。所使用之 胺類中和劑最好能使懸浮液之pH値保持在8到9之間，且 須具有高沸點，才不致因大量揮發造成pH下降，也才能避 免聚胺基甲酸乙酯懸浮液膠化。 依據目前發明之具體事實，強化鉻酸鹽轉化耐蝕性之 保邊性皮膜’尚須具有一種有效之交聯劑（crosslinking agent)，且該交聯劑對於所添加之電解質，如腐蝕抑制劑等 具有合理之穩定性，不會因腐蝕抑制劑之加入，造成交聯 劑失效。又因鉻酸鹽轉化皮膜所能承受之溫度僅66 ，故 所選用之交聯劑熟化溫度不宜過高，最好所使用之交聯劑 说在室溫下熟化，因此，次乙亞胺（arizidine)交聯劑為較佳 之選擇。次乙亞胺交聯劑是一種三官能基羧酸反應型交聯 劑。將次乙亞胺加入含有羧酸基之水性樹脂分散液中，可 強化該樹脂乾膜之抗化學性、抗水及抗溶劑性能，同時次 本“尺度適用中@國家標準（CNS)从胁（21{)；)<297公廣） --- 1— ^-----,Ν'.ί 裝------訂----I V 線 (諳先閲讀背面之注意事項再填寫本頁} 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明（（p ) 乙亞胺官能基具有pH敏感性，當處於高pH値下，其三環 可穩定存在水性PU分散液中，當pH値下降時，次乙亞胺 進行開環反應。次乙亞胺開環反應在常溫下即可進行，對 於不耐熱之鉻酸鹽轉化皮膜尤為適用。 次乙亞胺交聯劑已廣用於工業界，本發明利用次乙亞 胺作為水性PU之交聯劑。當工件從水性PU溶液中取出置 於大氣中時，水性PU中的對比陽離子（counter cation)如 TEA(triethylamine)、DEA(diethylamine)、或其他適用之胺 類，逐漸揮發致使附著於工件上之水性PU之pH値下降， 此時次乙亞胺與水性PU上的幾酸基進行反應，達成架橋， 也因此改善PU膜之抗化學性及抗溶劑等特性。又處理槽中 之水性PU會吸收大氣中之二氧化碳，造成水性PU分散液 pH値下降’故處理槽不使用時須加蓋，減少水性pu接觸空 氣，且須定期檢驗及補充有機胺，以保持水性PU之pH値 在8-9之間，方可避免槽液發生膠化現象。 本發明之改良方法中，水性PU膜成份亦可含有各種之 腐姓抑制劑’其可能是溶於水或是不溶於水。週期表VB或 VIB之金屬酸根為較適用之腐蝕抑制劑。適合於本發明之腐 蚀抑制劑為路酸鹽如：鉻酸鋅、絡酸钟、重絡酸钟、路酸 鋼、重鉻酸鈉、鉻酸鈣、重鉻酸鈣、鉻酸銨及重鉻酸銨等。 此外鉬酸鹽、鎢酸鹽、及釩酸鹽之鹼金屬或鹼土金屬 化合物如：鶴酸鈉、鉬酸鈉、訊酸鈉等，也適用於水性p|j 樹脂作為鋁合金腐蝕抑制劑。為降低鉻酸鹽使用量，故鉻 酸鹽雖抑制腐蝕效果較佳，但應避免採用。 8 ： ^-----裝------訂-----，、線 (請先閲讀背面之注意事項再填寫本頁)^ ---- 4 ------, — equipment-V; (Please read the precautions on the back before filling out this page) Order A7 B7 printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 2) Aluminum alloy corrosion resistance standard. The main ingredients of the formula used are sodium nitrate, ammonium hydrogen fluoride, sulfuric acid and nitric acid. In addition to the above formula, the metal can be treated by immersion, and silicon dioxide can be added to make it a viscous oxide. For workpieces that are not suitable for full immersion treatment, a viscous oxide remover can be used for local treatment, but the patent does not describe any reduction in the amount of chromium compounds in chemical conversion agents. Summary of the invention: The purpose of the present invention is to provide an improved method for the surface treatment of aluminum alloys, which can improve the corrosion resistance of the chromate chemical conversion surface treatment of aluminum alloys and make aluminum alloys that have not met the requirements of the US military regulations for salt spray corrosion resistance The chromate film 'meets the US military regulations and financial standards due to the strengthening effect of the present invention. Another object of the present invention is to provide a method for improving the surface treatment of Ming alloy, which can reduce the amount of chromate contained in the chemical treatment liquid in the chromate chemical conversion surface treatment step. However, the salt spray corrosion resistance on the surface will not be reduced. The improved method of the surface treatment of the Ming alloy according to the present invention is to improve the corrosion resistance of the aluminum alloy with a chromate film on the surface. The aluminum alloy having a complex salt film on the surface is further treated with an aqueous PU (polyurethane, polyurethane) treatment solution to form a PU film on the chromate film. The aqueous PU treatment solution contains (1) 5-15 weight percent of the water-dispersible polyurethane resin, (2) 0.1-5 weight percent of the crosslinking agent, and (3) 80-94.9 weight percent of water. The method of the present invention can strengthen the 4 paper sizes used in aviation equipment and weapon systems to comply with the Chinese National Standard (CNS) A4 specification (210 × 297 mm) 丨 丨 ^ ------------------------ —17 ----- ^ 线 '(ί. (Please read the notes on the back before filling out this page) Printed by the Shellfish Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs -m A7 B7 V. Description of the Invention (3)-of The corrosion resistance of heat-treated aluminum alloys of the same strength can, for example, strengthen the corrosion resistance of 2000 or 700G series Ming alloys, so that their corrosion resistance can reach the standards of the US military regulations; the method of the present invention can strengthen Ming alloy chromic acid The corrosion resistance of the salt film can reduce the amount of chromic acid without affecting the corrosion resistance of the conversion film. The invention can also reduce the amount of chromic acid compounds in the chemical conversion solution to 30% of the general amount, reducing the amount of chromate. The amount is used to reduce the environmental pollution impact of the aluminum alloy surface treatment process. The improved method of the present invention is to strengthen the corrosion resistance of the known aluminum alloy chromate film, after the original process of aluminum alloy chromate film is completed , Increase one Special water-based PU treatment solution is immersed in steps to complete the salt spray resistance of the aluminum alloy chromate conversion film. Although the water-based PU resin used will form a very thin protective film on the surface of Ming alloy, as long as the concentration of the water-based Pu solution Proper control does not affect paint adhesion and contact resistance on the surface. The present invention has the following features: 1. It can improve the corrosion resistance of the chromate conversion film. 2. The present invention uses water-based resin, which does not exist or only Contains a trace amount of organic volatile solvents, which will not cause environmental pollution. 3. It can increase the stability of chromate conversion film under elevated temperature. 4. Compatibility of anticorrosive film and anticorrosive primer provided by the present invention Very good can be used as a coating film between the coating system and the metal surface to improve the adhesion of the paint. 5 · The invention can reduce the amount of chromate (such as dichromic acid K2Cn07) in the chemical conversion solution, thereby Reduce the environmental pollution impact of Ming alloy chemical conversion process.} —Installation ----.-- order ----- ^ 1 line ·. Ί, (Please read the precautions on the back before filling this page) Central Bureau of Standards, Ministry of Economic Affairs Printed by the Consumer Cooperative A7 —-B7 1-__ V. Description of the invention (thousands) A detailed description of the invention: The improved method for surface treatment of aluminum alloys of the present invention provides a colloidal water-based urethane elastomer (For example: water-based polyurethane / acetic acid resin) as the main surface treatment method, because water-based ρϋ can form a dense film on the chromate film by cross linking agent, which will not be very The complete chromate film defect is masked, and the overall chromate film is converted to the surname by the contained corrosion inhibitor. According to the improved method of the present invention, the water-dispersible polyurethane is used. Ethyl resin can be aromatic, aliphatic or alicyclic isocyanate copolymer, and contains certain corrosion inhibitors such as: zinc Or insoluble salts such as tungstate, pivalate, salt, chromate, etc. Polyurethane resins used in the present invention are prepolymers of various isocyanates, such as: 2,4-toluene diisocyanate, 2,6- Toluene diisocyanate (2,6_toluene diisocyanate), 1,4-diisocyanate (i, 4_cyclohexane diisocyanate), dicyclohexylmethane, 4,4, -diisocyanate ( 4,4'-diisocyanate), Xylene diisocyanate, etc. Aromatic diisocyanates are commonly used as diisocyanates because they are prone to yellowing due to exposure to ultraviolet light. Avoid using them if you do not want the surface to hydrolyze due to yellowing. Aliphatic and cyclic aliphatic diisocyanates usually have very good resistance to the yellowing caused by ultraviolet rays, so this paper _ 6 This paper size applies to China National Standard (CNS) A4 (210X297 mm) ( Read the note on the back ^ before filling in this page} -Order-line · Consumer cooperation of employees of the Central Bureau of Standards of the Ministry of Economic Affairs 衽 Print A7 _____B7_ V. Description of the invention (f) The diisocyanate used is fat. The aliphatic or dicyclic diisocyanate is preferred. The polyurethane used in the present invention is a kind of liquid suspension urea-amine with good stability composed of the aforementioned monomers. Ethyl-urethane polymer salts, this dispersion can be diluted with water. The polymer salts used in the present invention are composed of carboxylic acid functional groups and tertiary polyamines. Ethyl urethane prepolymer of cyano group. This prepolymer is a reaction product of polycyanide and polyol, which has an acid value of about 5 to 18, and It is also a non-neutralized ion. This polyisocyanamide After the formation, the primary, secondary or tertiary amines must be used for neutralization to form a stable liquid colloidal suspension. The amine neutralizing agent used should preferably maintain the pH of the suspension between 8 and 9. And must have a high boiling point, so as not to cause a drop in pH due to a large amount of volatilization, and to avoid gelling of the polyurethane suspension. According to the specific facts of the present invention, the edge-protecting film that strengthens the corrosion resistance of chromate conversion ' It must still have an effective crosslinking agent, and the crosslinker has reasonable stability to the added electrolyte, such as corrosion inhibitor, etc., and it will not cause the crosslinker to fail due to the addition of the corrosion inhibitor. Because the temperature of the chromate conversion film can only withstand 66, the curing temperature of the selected cross-linking agent should not be too high. The best cross-linking agent used is said to be matured at room temperature. Therefore, the ethyleneimine (Arizidine) cross-linking agent is the better choice. Ethyleneimine cross-linking agent is a trifunctional carboxylic acid reactive cross-linking agent. Adding ethyleneimine to the aqueous resin dispersion containing carboxylic acid group can strengthen The resin dry film resistance Chemical resistance, water resistance and solvent resistance, and at the same time, the "standard applicable @National Standards (CNS) Congxie (21 {);) < 297 public broadcasting) --- 1- ^ -----, N '.ί Install ------ Order ---- IV line (谙 Please read the notes on the back before filling out this page} Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 B7 V. Invention Description ((p) The ethyleneimine functional group is pH sensitive. When it is at high pH, its tricyclic ring can be stably stored in an aqueous PU dispersion. When the pH is decreased, the ethyleneimine undergoes a ring-opening reaction. The reaction can be performed at normal temperature, and is particularly suitable for a heat-resistant chromate conversion film. The ethyleneimine cross-linking agent has been widely used in the industry, and the present invention utilizes ethyleneimine as a cross-linking agent for water-based PU. When the workpiece is taken out of the aqueous PU solution and placed in the atmosphere, the counter cations in the aqueous PU, such as TEA (triethylamine), DEA (diethylamine), or other applicable amines, gradually volatilize and cause adhesion to the workpiece. The pH 値 of the water-based PU decreases. At this time, the ethyleneimine reacts with the several acid groups on the water-based PU to achieve bridging, thereby improving the chemical resistance and solvent resistance of the PU film. In addition, the water-based PU in the treatment tank will absorb carbon dioxide in the atmosphere, causing the pH of the water-based PU dispersion to drop. Therefore, the treatment tank must be covered when not in use to reduce the exposure of the water-based PU to the air, and the organic amine must be inspected and replenished regularly to maintain The pH of water-based PU is between 8-9 to prevent gelation of the bath. In the improved method of the present invention, the water-based PU film component may also contain various scum inhibitors, which may be soluble in water or insoluble in water. Metal acidates of the periodic table VB or VIB are more suitable corrosion inhibitors. Suitable corrosion inhibitors for the present invention are road salts such as: zinc chromate, complex acid bells, double complex acid bells, road acid steels, sodium dichromate, calcium chromate, calcium dichromate, ammonium chromate and heavy Ammonium chromate and so on. In addition, molybdate, tungstate, and vanadate alkali metal or alkaline earth metal compounds, such as sodium crane crane, sodium molybdate, sodium sodium, etc., are also suitable for water-based p | j resins as corrosion inhibitors for aluminum alloys. In order to reduce the use of chromate, chromate should be avoided, although it has a better effect of inhibiting corrosion. 8: ^ ----- install ------ order ----- ,, line (please read the precautions on the back before filling this page)
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r C B7 B7 經濟部中央標準局負工消費合作社印製 五、發明説明（7 ) 本發明所>4用之水性pu樹脂可由市場上獲得，例如台 灣台南縣之台昌樹脂企業股份有限公司、美國麻省之r C B7 B7 Printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 5. Description of the Invention (7) The water-based pu resin used in the present invention > 4 can be obtained from the market, for example, Taichang Resin Enterprise Co., Ltd., Tainan County, Taiwan Massachusetts
Polyvinyl Chemicals Co.或美國紐約州之 Spencer Kellogg Co. 均有销售。 本發明所使用之脂肪族水性PU係Polyvinyl ChemiealsBoth Polyvinyl Chemicals Co. or Spencer Kellogg Co. of New York State are available for sale. The aliphatic water-based PU used in the present invention is Polyvinyl Chemieals
Co.之R-960及台昌公司之TCU-6331或是TCU-9635。芳香 族水性 PU 樹脂為 Spencer Kellogg Co.之 Spensol L-44。 由本發明中可理解，其他成份或許可加入藉以滿足薄 膜之特殊需求，例如：顏料、染料、著色劑和平整劑等。 本發明既可強化鉻酸鹽轉化皮膜耐蝕性能，同時又可 降低絡酸鹽之使用量，卻不會降低其耐蝕性能，其所牵涉 之各項操作參數與PU皮膜之特性關係複雜，經由整理大致 可歸納如下： 傳統絡酸鹽轉化表面處理完成後，以上述提及之PU處 理液，浸泡1至5小時，可得不同之耐鹽霧效果，其耐蝕性 能係與浸泡時間成正比關係。依需求可調整pu水溶液之固 含量’若需低接觸電阻時，使用較稀薄之水溶液，水溶液 中PU固含量與接觸電阻係成反比關係，亦即當溶液中pu含 量低時’所形成之PU薄膜較薄，有利於需高導電之場合， 若需較高之耐蝕性則可提高PU溶液中之PiJ固含量，亦即耐 蚀性與PU溶液中PU固含量成正比關係。 為使PU易於在鉻酸鹽皮膜上形成完整之薄膜，當浸泡 本發明所揭示之配方水溶液不需用水清洗，僅需大氣中靜 置3〜5小時（視天候狀況而定），即可噴塗油漆，若pu完全 ^ 裝------訂------、線 (請先閲讀背面之注意事項再填寫本頁)Co.'s R-960 and Taichang's TCU-6331 or TCU-9635. Aromatic water-based PU resin is Spensol L-44 from Spencer Kellogg Co. It can be understood from the present invention that other ingredients may be added to meet the special needs of the film, such as pigments, dyes, colorants and levelers. The invention can not only enhance the corrosion resistance of chromate conversion film, but also reduce the amount of complexate used, but it will not reduce its corrosion resistance. The operating parameters involved are complicated with the characteristics of PU film. It can be roughly summarized as follows: After the traditional complex salt conversion surface treatment is completed, the above-mentioned PU treatment solution is immersed for 1 to 5 hours to obtain different salt spray resistance effects. Its corrosion resistance is directly proportional to the immersion time. The solid content of the pu aqueous solution can be adjusted according to demand. 'If low contact resistance is required, use a thinner aqueous solution. The PU solid content in the aqueous solution is inversely proportional to the contact resistance. That is, when the pu content in the solution is low, the PU formed. The thin film is beneficial to the occasions with high conductivity. If higher corrosion resistance is needed, the PiJ solid content in the PU solution can be increased, that is, the corrosion resistance is directly proportional to the PU solid content in the PU solution. In order to make PU easy to form a complete film on the chromate film, when immersed in the formula aqueous solution disclosed in the present invention, it is not necessary to wash with water, it only needs to be left in the air for 3 to 5 hours (depending on weather conditions), and then it can be sprayed. Paint, if pu is completely ^ installed ------ order ------, line (please read the precautions on the back before filling this page)
經濟部中央標準局員工消費合作社印製 391^88 A7 B7 五、發明説明（g ) 熟化則需3至7天。 本發明得藉助下列實施例而得具體之瞭解，惟本發明 之範圍並不限於該等實施例。 本發明所使用之水性PU處理液配方例： 配方A 脂肪族或芳香族水性PU 10%(W/V) 二乙基胺 1%(W/V) 去離子水（DI water) 89%(W/V) 配方B 脂肪族或芳香族水性PU 12%(W/V) 次乙亞胺 2%(ff/V) 三乙醇胺 1%(W/V) 去離子水 85%(W/V) 配方C 脂肪族或芳香族水性PU 10%(W/V) 三乙基胺 1%(W/V) 鎢酸鈉 1%(W/V) 去離子水 88%(W/V) 配方D 脂肪族或芳香族水性PU 10%(W/V) 次乙亞胺 2%(W/V) 10 本紙張尺度適用中國國家標準（CNS ) A4規格（210Χ297公釐） ----：-----广'1裝------訂-----線 (請先閱讀背面之注意事項再填寫本頁) 教滴部中央摞準局員工消費合作社印 391988 A7 ___B7_ 五、發明説明（，） 鉬酸鈉 1%(W/V) 三乙醇胺 1%(W/V) 去離子水 86%(W/V) 比較例1:鋁合金工件之鉻酸鹽轉化表面處理 將AA2014-T6鋁合金試件使用三氣乙烯進行蒸氣除後 靜置乾燥。進行清潔及脱脂約20〜30分鐘，清潔脱脂所使用 之清潔劑須為非侵蝕性清潔液，其pH最好在ιι〜13之間； 其活性鹼度（active alkalinity)為15到20%(重量百分比），處 理溫度為40〜60 〇隨後使用自來水（Tape Water)浸洗60〜90 秒。清洗完成後，於室溫進行清除氧化膜（de〇xidized)作業2 至ό分鐘’清除氧化膜所用溶液之主要成份為3〇〇〜5〇〇亳升 /公升之66 B e硫酸、300〜500亳升/公升之硝酸、氟化氫 銨20-30公克/公升及硝酸銨5〜1〇公克/公升。鋁合金工件 使用清水清洗約2分鐘後，浸泡於濃度為】〇公克/公升之 Irriditel4-2鉻酸溶液中6分鐘進行轉化處理。清水清洗後， 將工件置於大氣中24小時，使鉻酸鹽轉化皮膜穩定。如此， 即完成鋁合金鉻酸鹽轉化表面處理。其鹽霧試驗結果如表 Ο 貫施例1 .銘合金路酸鹽皮膜強化處理 ： 取相同之AA2〇14_T6鋁合金試件，重複比較例丨之鋁 合金鉻酸鹽轉化表面處理，得到與比較例1相同之鉻酸鹽轉 化皮膜之鋁s金。將上述完成之路酸鹽轉化皮膜紹合金試 —______11 本纸乐尺度述用中國國豕標準（CNS ) A4規格（210 X 297公釐）——" ------ 1— n 4— H ϋ n n n I (諳先w讀背面之注意事項再填寫本頁)Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 391 ^ 88 A7 B7 V. Description of Invention (g) It takes 3 to 7 days to mature. The present invention will be specifically understood by reference to the following examples, but the scope of the present invention is not limited to these examples. Example of the formulation of the aqueous PU treatment liquid used in the present invention: Formulation A Aliphatic or aromatic aqueous PU 10% (W / V) Diethylamine 1% (W / V) DI water 89% (W / V) Formula B Aliphatic or aromatic water-based PU 12% (W / V) ethyleneimine 2% (ff / V) triethanolamine 1% (W / V) deionized water 85% (W / V) formula C Aliphatic or aromatic water-based PU 10% (W / V) Triethylamine 1% (W / V) Sodium tungstate 1% (W / V) Deionized water 88% (W / V) Formula D Aliphatic Or aromatic water-based PU 10% (W / V) Ethyleneimine 2% (W / V) 10 This paper size applies to China National Standard (CNS) A4 specification (210 × 297 mm) ----: ---- -Guang'1 Pack ------ Order ----- line (please read the precautions on the back before filling this page) Printed by the Central Consumers' Bureau of the Education Division 39978 A7 ___B7_ V. Description of the invention ( ,) Sodium molybdate 1% (W / V) Triethanolamine 1% (W / V) Deionized water 86% (W / V) Comparative Example 1: Chromate conversion surface treatment of aluminum alloy workpieces AA2014-T6 aluminum The alloy test piece was subjected to steam removal using three gas ethylene and allowed to stand for drying. Clean and degrease for about 20 to 30 minutes. The cleaning agent used for cleaning and degreasing must be a non-aggressive cleaning solution, and its pH is preferably between ι and 13; its active alkalinity is 15 to 20% ( Weight percentage), the treatment temperature is 40 ~ 60, and then immersed in tap water (Tape Water) for 60 ~ 90 seconds. After cleaning, deoxidized operation is performed at room temperature for 2 to 6 minutes. The main component of the solution used to remove the oxide film is 300 ~ 500 liters / liter of 66 B e sulfuric acid, 300 ~ 500 liters / liter of nitric acid, 20-30 grams / liter of ammonium bifluoride, and 5 ~ 10 grams / liter of ammonium nitrate. The aluminum alloy workpiece was washed with water for about 2 minutes, and then immersed in an Irriditel 4-2 chromic acid solution at a concentration of 0 g / liter for 6 minutes for conversion treatment. After washing with water, the workpiece is left in the air for 24 hours to stabilize the chromate conversion film. In this way, the aluminum alloy chromate conversion surface treatment is completed. The results of the salt spray test are shown in Table 〇 Example 1. Strengthening treatment of Ming alloy road acid salt film: Take the same AA2014_T6 aluminum alloy specimen and repeat the aluminum alloy chromate conversion surface treatment of Comparative Example 丨 to obtain and compare Aluminum s gold of the same chromate conversion film of Example 1. The above-mentioned completed acid salt conversion coating film alloy test — ______11 This paper uses the Chinese National Standard (CNS) A4 specification (210 X 297 mm) —— " ------ 1— n 4 — H ϋ nnn I (谙 read the precautions on the back before filling this page)
-線------II'------ — _： I In II 391938 A7 B7 五、發明説明（产） — — 件浸入配方A溶液中5小時後，取出放置於大氣中乾燥3〜5 小時後。其鹽霧試驗結果如表一。 實施例2 重複實施例1之步騾，但以配方D溶液取代配方A溶 液。其鹽霧試驗結果如表一。 實施例3 重複實施例2之步騾，但浸入配方D溶液中之時間由5 小時延長為10小時。其鹽霧試驗結果如表一。 實施例4 重複實施例3之步騾，但以AA7075-T6鋁合金工件取代 AA2014-T6鋁合金工件。其鹽霧試驗結果如表一。 表一：鹽霧試驗結果 (請先閱讀背面之注意事項再填寫本頁) •裝. -β 經潢部中央標準局員工消费合作社印聚 試驗材質 配方與浸泡時間 鹽霧試驗結果 合袼判定 (小時） (小時） 比較例1 0小時 <168 不合格 實施例1 配方A, 5小時 >168 合格 實施例2 配方D，5小時 >168 合格 實施例3 配方D，10小時 >336 合格 實施例4 配方D，10小時 >336 合格 _______ 12 A7 經满部中决榡準局貝J-消f合作社印奴 391988 五、發明説明（) 由表一之結果顯示，當轉化處理所使用之Irridite 14-2 鉻酸溶液之濃度降低至10公克/公升時，如比較例一者，其 鹽霧試驗結果不合格。同樣的，當轉化處理所使用之Irridite 14-2銘酸溶液之濃度一樣降低至1 〇公克/公升時，而以本發 明之改良方法處理者，如實施例2至4者，其鹽霧試驗結果 均合格。故本發明改良方法，可以減少鉻酸鹽化學轉化表 面處理步騾中，化學處理液所含鉻酸鹽之用量，卻不會降 低該表處之鹽霧耐蚀性，當可以確定。 综上所述，本發明確能藉所揭露之構造以達到發明目 的，具新穎性、進步性、與可供產業利用性，而與發明專 利要件相符合。惟以上所揭示者，乃較佳實施例，舉凡局 部之變更或修飾而源於本案之技術思想而為熟習該項技藝 之人士所易於推知者，俱不脱本案之專利權範疇。 本纸張尺度—中國-Line ------ II '------ — _: I In II 391938 A7 B7 V. Description of the invention (production) — — After immersed in the solution of Formula A for 5 hours, take it out and dry it in the air After 3 ~ 5 hours. The salt spray test results are shown in Table 1. Example 2 The procedure of Example 1 was repeated, but the solution of Formula D replaced the solution of Formula A. The salt spray test results are shown in Table 1. Example 3 The steps of Example 2 were repeated, but the time of immersion in the solution of Formula D was extended from 5 hours to 10 hours. The salt spray test results are shown in Table 1. Example 4 The steps of Example 3 were repeated, but AA7075-T6 aluminum alloy workpiece was used instead of AA2014-T6 aluminum alloy workpiece. The salt spray test results are shown in Table 1. Table 1: Salt spray test results (please read the notes on the back before filling this page) Hours) (hours) Comparative Example 10 hours < 168 Disqualified Example 1 Formula A, 5 hours > 168 Qualified Example 2 Formula D, 5 hours > 168 Qualified Example 3 Formula D, 10 hours > 336 Eligible Example 4 Formula D, 10 hours > 336 Passed _______ 12 A7 After the Ministry of Justice, JB, J-F, Cooperatives, and Innu 391988 V. Description of the invention () The results shown in Table 1 show that When the concentration of the used Irridite 14-2 chromic acid solution is reduced to 10 g / L, as in Comparative Example 1, the salt spray test results are unsatisfactory. Similarly, when the concentration of the Irridite 14-2 acid solution used in the conversion treatment is also reduced to 10 g / L, and those treated by the improved method of the present invention, such as those in Examples 2 to 4, the salt spray test The results are all acceptable. Therefore, the improved method of the present invention can reduce the amount of chromate contained in the chemical treatment liquid in the chemical conversion surface treatment step of chromate, but it will not reduce the salt spray corrosion resistance at the surface, which can be determined. In summary, the present invention can indeed achieve the purpose of the invention through the disclosed structure, and is novel, progressive, and available for industrial use, and is consistent with the requirements of the invention patent. However, what is disclosed above is a preferred embodiment. For example, any change or modification in the local area that is derived from the technical ideas of the case and is easily inferred by those skilled in the art, does not depart from the scope of patent rights in this case. Paper Size-China