CN113927208A - 一种高性能水基助焊剂 - Google Patents
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- 230000003213 activating effect Effects 0.000 claims abstract description 16
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- 239000008367 deionised water Substances 0.000 claims abstract description 11
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- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 15
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- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 10
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 10
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- CYEJMVLDXAUOPN-UHFFFAOYSA-N 2-dodecylphenol Chemical compound CCCCCCCCCCCCC1=CC=CC=C1O CYEJMVLDXAUOPN-UHFFFAOYSA-N 0.000 claims description 6
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- FKWGCEDRLNNZOZ-GFCCVEGCSA-N Xanthorrhizol Chemical compound CC(C)=CCC[C@@H](C)C1=CC=C(C)C(O)=C1 FKWGCEDRLNNZOZ-GFCCVEGCSA-N 0.000 claims description 4
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 4
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- 239000000843 powder Substances 0.000 claims description 4
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 3
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- YGSDEFSMJLZEOE-UHFFFAOYSA-N Salicylic acid Natural products OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 claims description 3
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000001630 malic acid Substances 0.000 claims description 3
- 235000011090 malic acid Nutrition 0.000 claims description 3
- 229960004889 salicylic acid Drugs 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 claims description 2
- 239000005711 Benzoic acid Substances 0.000 claims description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 2
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 2
- 235000010233 benzoic acid Nutrition 0.000 claims description 2
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 claims description 2
- 239000003093 cationic surfactant Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 239000012153 distilled water Substances 0.000 claims description 2
- SYELZBGXAIXKHU-UHFFFAOYSA-N dodecyldimethylamine N-oxide Chemical compound CCCCCCCCCCCC[N+](C)(C)[O-] SYELZBGXAIXKHU-UHFFFAOYSA-N 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 229940054190 hydroxypropyl chitosan Drugs 0.000 claims description 2
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- ONHFWHCMZAJCFB-UHFFFAOYSA-N myristamine oxide Chemical compound CCCCCCCCCCCCCC[N+](C)(C)[O-] ONHFWHCMZAJCFB-UHFFFAOYSA-N 0.000 claims description 2
- 239000002736 nonionic surfactant Substances 0.000 claims description 2
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 2
- 239000011975 tartaric acid Substances 0.000 claims description 2
- 235000002906 tartaric acid Nutrition 0.000 claims description 2
- FKWGCEDRLNNZOZ-UHFFFAOYSA-N xanthorrhizol Natural products CC(C)=CCCC(C)C1=CC=C(C)C(O)=C1 FKWGCEDRLNNZOZ-UHFFFAOYSA-N 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 150000007524 organic acids Chemical class 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 11
- 241000894006 Bacteria Species 0.000 abstract description 4
- 241000233866 Fungi Species 0.000 abstract description 4
- 244000005700 microbiome Species 0.000 abstract description 4
- 238000007598 dipping method Methods 0.000 abstract description 2
- 238000005187 foaming Methods 0.000 abstract description 2
- 229910052736 halogen Inorganic materials 0.000 abstract description 2
- 150000002367 halogens Chemical class 0.000 abstract description 2
- 239000003960 organic solvent Substances 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 229910052802 copper Inorganic materials 0.000 description 10
- 239000010949 copper Substances 0.000 description 10
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229920000058 polyacrylate Polymers 0.000 description 3
- 239000001384 succinic acid Substances 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
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- 150000001298 alcohols Chemical class 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/362—Selection of compositions of fluxes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
本发明涉及一种高性能水基助焊剂。所述水基助焊剂含有以重量计:4.2%~6.5%的活化剂、8.5%~10.5%的活化剂载体、1.1%~2.5%的表面活性剂、0.51%~0.85%的抑制剂和余量为去离子水。该水基助焊剂不含挥发性有机溶剂组分,无卤素,加入抑制剂能有效抑制微生物(如细菌、真菌和霉菌)滋长而改善现有水基助焊剂存在的不足,同时焊接时对线路板和传送带基本不造成腐蚀,焊后无需清洗,是真正安全环保助焊剂,适用于喷雾、浸蘸、发泡方式将其涂覆在PCB板焊接面。
Description
技术领域
本发明涉及一种助焊剂,尤其是用于波峰焊接的腐蚀性小、焊接性好的水基助焊剂。
背景技术
在电子钎焊领域,助焊剂是一种非常重要的辅助材料。传统助焊剂主要是有机溶剂型,以低沸点的醇类(如甲醇、乙醇、异丙醇等)作载体,虽然这些物质本身对人体及环境的影响不是特别大,但是经过高温分解后的产物也可能会对环境及人体造成不利影响。近年,人们开始研发以水作为溶剂基体的助焊剂,即“水基助焊剂”,具有环保、免洗和安全等优势,但在无铅焊接时对线路板和传送带的腐蚀严重。此外微生物(如细菌、真菌和霉菌)滋长不仅影响可焊性,而且焊后微生物残留物影响导电性等。
发明内容
针对现有水基助焊剂存在的应用难题,本发明提供一种在无铅焊接时对线路板和传送带腐蚀性小、焊接性好、焊后服役可靠性高的水基助焊剂。为实现本发明目的,采用如下技术方案。
本发明一种高性能水基助焊剂含有以重量百分数计:
活化剂 4.2%~6.5%
活化剂载体 8.5%~10.5%
表面活性剂 1.1%~2.5%
抑制剂 0.51%~0.85%
其余为溶剂(去离子水)。
所述的活化剂为柠檬酸、丁二酸、酒石酸、衣康酸、2-羟基苯甲酸、苯甲酸、庚二酸、苹果酸等中的一种或多种。活化剂主要功能是除去引线脚上的氧化物和熔融焊料表面的氧化物。
所述活化剂载体为油溶性聚丙酸烯异丁酯。它作为包裹载体,实现活化剂的预处理;并有利于预处理处理后的活化剂均匀分散在溶剂中。
所述表面活性剂由非离子表面活性剂或阳离子表面活性剂组成,如十二烷基酚聚氧乙烯醚、辛基酚聚氧乙烯醚、壬基酚聚氧乙烯醚、十二烷基二甲基氧化胺、十四烷基二甲基氧化胺。其主要作用是降低表面张力,增强润湿力,提高可焊性。
所述抑制剂,可选乙二醇壳聚糖、羟丙基壳聚糖、黄姜根醇中的一种或几种混合。其主要作用为抑制微生物(如细菌、真菌和霉菌)在水中生长,提高可焊性和焊后服役可靠性。
本发明水基助焊剂的制备过程如下:(1)在反应釜中完成活化剂的预处理:首先称取为4.2%~6.5%的活化剂,倒入反应釜中,两倍活化剂重量的蒸馏水,在 50℃ 搅拌1小时;接着在反应釜中加入8.5%~10.5%活化剂载体,迅速升温至 90℃,搅拌 4 小时,以完成活化剂的预处理;然后水冷同时快速搅拌,经烘干、研碎获得白色粉末,即为预处理后的活化剂。
(2)水基助焊剂的制备:先称取1.1%~2.5%表面活性剂和79.65~85.69%去离子水,倒入反应釜中混合并搅拌均匀,升温至40℃土2℃;并在搅拌的同时缓慢加入步骤(1)制备所得的白色粉末,搅拌2小时,最后加入0.51%~0.85%抑制剂,并搅拌均匀,即得本发明一种高性能水基助焊剂。
本发明一种高性能水基助焊剂以去离子水作溶剂,不含挥发性有机物,无卤素,能有效抑制微生物(如细菌、真菌和霉菌)滋长,焊接时对线路板和传送带基本不造成腐蚀,焊后无需清洗,是真正安全环保助焊剂。适用于喷雾、浸蘸、发泡方式将其涂覆在PCB板焊接面,实现电子产品的无铅焊接。
具体实施方式
实施例1: 柠檬酸 1.9%
丁二酸 2.3%
油溶性聚丙酸烯异丁酯 8.5%
十二烷基酚聚氧乙烯醚 0.81%
乙二醇壳聚糖0.3%
去离子水 85.69%;
实施例2:柠檬酸 2.5%
丁二酸 2.5%
油溶性聚丙酸烯异丁酯 9%
十二烷基酚聚氧乙烯醚 0.3%
乙二醇壳聚糖0.3%
去离子水 85.4%;
实施例3:柠檬酸 2.5%
苹果酸 2.5%
油溶性聚丙酸烯异丁酯 9.5%
十二烷基酚聚氧乙烯醚 0.4%
乙二醇壳聚糖0.4%
去离子水 84.7%;
实施例4:2-羟基苯甲酸 3%
琥珀酸 3.5%
油溶性聚丙酸烯异丁酯 10.5%
十二烷基酚聚氧乙烯醚 0.45%
乙二醇壳聚糖0.4%
去离子水 79.65%。
本发明实施例1-4的助焊性、铜镜腐蚀和铜板腐蚀性试验结果数据如下所述。
按实施例1制备的水基助焊剂,按照GB/T 31474-2015试验方法进行测试,测试结果:助焊性(扩展率,%)85%、铜镜无穿透性腐蚀、铜板无腐蚀。
按实施例2制备的水基助焊剂,按照GB/T 31474-2015试验方法进行测试,测试结果:助焊性(扩展率,%)90%、铜镜无穿透性腐蚀、铜板无腐蚀。
按实施例3制备的水基助焊剂,按照GB/T 31474-2015试验方法进行测试,测试结果:助焊性(扩展率,%)87%、铜镜无穿透性腐蚀、铜板无腐蚀。
按实施例4制备的水基助焊剂,按照GB/T 31474-2015试验方法进行测试,测试结果:助焊性(扩展率,%)84%、铜镜无穿透性腐蚀、铜板无腐蚀。
Claims (6)
1.一种一种高性能水基助焊剂,其组分及含量为:
活化剂 4.2%~6.5%
活化剂载体 8.5%~10.5%
表面活性剂 1.1%~2.5%
抑制剂 0.51%~0.85%
其余为溶剂去离子水,所述的百分数为重量百分数。
2.根据权利要求1所述的一种高性能水基助焊剂,其特征在于:所述的活化剂为柠檬酸、丁二酸、酒石酸、衣康酸、2-羟基苯甲酸、苯甲酸、庚二酸、苹果酸等中的一种或多种。
3.根据权利要求1所述的一种高性能水基助焊剂,其特征在于:所述的活化剂载体为油溶性聚丙酸烯异丁酯。
4.根据权利要求1所述的一种高性能水基助焊剂,其特征在于:所述的表面活性剂为非离子表面活性剂或阳离子表面活性剂,如十二烷基酚聚氧乙烯醚、辛基酚聚氧乙烯醚、壬基酚聚氧乙烯醚、十二烷基二甲基氧化胺、十四烷基二甲基氧化胺其中的一种或多种。
5.根据权利要求1所述的一种高性能水基助焊剂,其特征在于:所述的抑制剂为乙二醇壳聚糖、羟丙基壳聚糖、黄姜根醇等中的一种或几种混合。
6.根据权利要求1所述的一种高性能水基助焊剂的制备方法,其特征在于,包括如下步骤:
(1)在反应釜中完成活化剂的预处理:首先称取为1.0~4.0% 的活化剂(由67~80%有机酸和20%~33%有机胺混合),倒入反应釜中,加入两倍活化剂重量的蒸馏水,在 50℃搅拌1小时;接着在反应釜中加入1.0~8.0%活化剂载体,迅速升温至 90℃,搅拌 4 小时,以完成活化剂的预处理;然后水冷同时快速搅拌,经烘干、研碎获得白色粉末,即为预处理后的活化剂;
(2)水基助焊剂的制备:先称取0.1~1.0%表面活性剂和86.5~97.89%去离子水,倒入反应釜中混合并搅拌均匀,升温至40℃土2℃;并在搅拌的同时缓慢加入步骤(1)制备所得的白色粉末,搅拌2小时,最后加入0.01~0.5%抑制剂,并搅拌均匀,即得本发明一种高性能水基助焊剂。
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