CN106752518B - 一种防潮油及其制备方法 - Google Patents
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Abstract
本发明属于印刷电路板防护技术领域，尤其涉及一种防潮油，包括以下质量百分比的组成：丙烯酸树脂8‑20%，丙酮30‑56%，乙二醇单丁醚5‑15%，有机酸4‑15%，催干剂3‑10%，抗氧化剂0.5‑12%，表面活性剂0.5‑8%。本发明提供的防潮油是一种含溶剂丙烯酸树脂防潮油，具有表干、颜色透明、质地柔韧却易于修复的特征；而且本发明中添加了抗氧化剂、有机酸、催干剂和表面活性剂，提高了防潮油的耐久性，加速了防潮油的固化，增强了防潮油的防潮性能。另外，本发明还涉及一种防潮油的制备方法，方法简单，生产效率高。
Description
技术领域
本发明属于印刷电路板防护技术领域，尤其涉及一种防潮油及其制备方法。
背景技术
印制电路板是指在绝缘基材上，按照预定设计形成从点到点互联线路以及印制元件，是电子元器件电气连接的提供者。电路板在日常生活中非常常见，小到手机、U盘、照相机，大到航天航空、高铁动车等高端产品。随着电子产品种类及数量的日趋增加，要提高电子产品的竞争力，严控电路板的质量是尤为重要的环节。在实际应用过程中，电路板的使用环境复杂多样，可能面临潮湿、高热、盐雾、低温、震动、高尘等环境，如果不进行相应有效的防护，电路板将会迅速出现腐蚀、变形、霉变、老化等问题，最终导致电路失效，设备出现故障。
为了减轻外界环境对电路板的破坏，保证设备正常运作，常在电路板表面喷涂防潮油，工作原理是在电路板表面形成一层保护膜，以使电路板免受工作环境损害，从而增进电路板的质量可靠性。现有的防潮油主要存在固化时间长、防潮和防腐蚀性能不理想、耐久性差、不易返修等缺点。因此，确有必要提供一种固化时间短、防潮和防腐蚀性能良好且易于修复的防潮油，进一步加强电路板的综合性能，以满足集成电路技术迅猛发展的需求。
发明内容
本发明的一个目的是：针对现有技术的不足而提供一种防潮油，固化时间短，较好的防潮和防腐蚀性能，易于修复。
为了实现上述目的，本发明采用以下技术方案：
一种防潮油，包括以下质量百分比的组成：
其中，乙二醇单丁醚能以任意比例与丙酮混溶。丙酮和乙二醇单丁醚均作为溶剂使用。
所述有机酸为结构简式为R1-COOH、R2-SO3H、R3-SOOH、R4-COSH的化合物中的至少一种，其中，R1～R4为氢、烷基、碳环、碳链、苯环中的任意一种。本发明中有机酸主要起到催化作用，加速防潮油干燥成膜。
所述催干剂包括铅催干剂、锰催干剂、钴催干剂、锌催干剂和钙催干剂中的至少一种。催干剂是指能提高氧化交联型涂膜固化速度的物质。其中，铅催干剂、锰催干剂和钴催干剂为主催干剂，这类催干剂金属在成膜的整个过程中，都起着催化作用。锌催干剂和钙催干剂为助催干剂，助催干剂单独使用不起作用，但是它们可以提高主催干剂的催干效率，还可以起到使漆膜干燥均匀、消除起皱和使主催干剂稳定的作用。由此可见，不同的催干剂金属有不同的影响，各种金属各有其特性，本发明将之得当配合使用产生了较好的催干效果，缩短油膜干燥时间，且所得膜层不会产生表里干燥不一致，表面起皱等弊病。
所述抗氧化剂包括受阻酚类抗氧化剂和亚磷酸酯类抗氧化剂，其中，所述受阻酚类抗氧化剂为2,6-二丁基四甲酚(BHT)、抗氧化剂1010、抗氧化剂1076中的至少一种，所述亚磷酸酯类抗氧化剂为抗氧化剂TNP和抗氧化剂TPP中的至少一种。受阻酚类抗氧化剂和亚磷酸酯类抗氧化剂具有互补的抗氧稳定功能，其并用存在协同作用，可是各自的效能得到更充分的发挥。本发明通过抗氧化剂延缓或抑制防潮油中聚合物氧化过程的进行，从而阻止其老化并延长其使用寿命。
所述表面活性剂为十八烷基硫酸钠、硬脂酸钠、二辛基琥珀酸磺酸钠和十二烷基苯磺酸钠中的至少一种。表面活性剂通过分子中不同部分分别对于两相的亲和，使两相均将其看作本相的成分，分子排列在两相之间，使两相的表面相当于转入分子内部，从而降低表面张力。由于两相都将其看作本相的一个组分，就相当于两个相与表面活性剂分子都没有形成界面，就相当于通过这种方式部分的消灭了两个相的界面，就降低了表面张力和表面自由能。防潮油体系的表面张力和表面自由能低，疏水性好，从而能起到更好的防潮性能。
优选的，本发明所述的防潮油，包括以下质量百分比的组成：
更为优选的，本发明所述的防潮油，包括以下质量百分比的组成：
本发明的另一个目的在于：提供一种防潮油的制备方法，包括以下步骤：
步骤一，按上述质量百分比，称取一定质量的上述各组分备用；
步骤二，将丙烯酸树脂和抗氧化剂加入到反应容器中，用分散搅拌机进行搅拌，搅拌时间为10～30分钟，使原料充分反应与溶解，制备成溶液A；
步骤三，在另一反应容器中加入有机酸、表面活性剂、丙酮、乙二醇单丁醚、催干剂，搅拌10～20分钟，使其充分混合溶解，制备成溶液B；
步骤四，往步骤二制得的溶液A中加入步骤三制得的溶液B，分散搅拌均匀，静置15～20小时，得到防潮油。
作为本发明所述的防潮油的制备方法的一种改进，在步骤二中，所述搅拌速度为1500～2000转/分钟。
本发明的有益效果在于：本发明提供了一种防潮油，其是一种含溶剂丙烯酸树脂防潮油，具有表干、颜色透明、质地柔韧却易于修复的特征；而且本发明中添加了抗氧化剂、有机酸、催干剂和表面活性剂，提高了防潮油的耐久性，加速了防潮油的固化，增强了防潮油的防潮性能。另外，本发明还提供了一种制备方法，方法简单，生产效率高。
具体实施方式
下面将结合具体实施方式对本发明及其有益效果作进一步详细说明，但是，本发明的具体实施方式并不局限于此。
实施例1～6
制备防潮油，具体组分和含量见表1，制备方法如下：
步骤一，按质量百分比，称取一定质量的各组分备用；
步骤二，将丙烯酸树脂和抗氧化剂加入到反应容器中，用分散搅拌机进行搅拌，搅拌速度为1500～2000转/分钟，搅拌时间为10～30分钟，使原料充分反应与溶解，制备成溶液A；
步骤三，在另一反应容器中加入有机酸、表面活性剂、丙酮、乙二醇单丁醚、催干剂，搅拌10～20分钟，使其充分混合溶解，制备成溶液B；
步骤四，往步骤二制得的溶液A中加入步骤三制得的溶液B，分散搅拌均匀，静置15～20小时，得到防潮油。
表1实施例组分和含量表
对比例1～6
为了更能突出本发明的有益效果，采用以下对比例1～6，具体组分和含量见表2，其制备方法同实施例1～6。
表2对比例组分和含量表
分别对实施例1～6和对比例1～6进行试验测试，测试结果见表3～4。
表3实施例的测试结果
表4对比例的测试结果
从实施例1～2和对比例1～2的测试结果可知，本发明中在配方中添加了有机酸和催干剂后，其全干时间明显缩短，也即加速了防潮油的固化。从实施例3～4和对比例3～4可以看出，本发明在配方中加入抗化化剂后，其耐久性明显更好。从实施例5～6和对比例5～6可知，本发明采用表面活性剂后，其表面能较低，憎水性更好，有效改善防潮油的防潮性能。
根据上述说明书的揭示和教导，本发明所属领域的技术人员还能够对上述实施方式进行变更和修改。因此，本发明并不局限于上述的具体实施方式，凡是本领域技术人员在本发明的基础上所作出的任何显而易见的改进、替换或变型均属于本发明的保护范围。此外，尽管本说明书中使用了一些特定的术语，但这些术语只是为了方便说明，并不对本发明构成任何限制。
Claims (7)
1.一种防潮油，其特征在于，包括以下质量百分比的组成：
丙烯酸树脂 8-20%
丙酮 30-56%
乙二醇单丁醚 5-15%
有机酸 4-15%
催干剂 3-10%
抗氧化剂 0.5-12%
表面活性剂 0.5-8%；
所述有机酸为结构简式为R1-COOH、R2-SO3H、R3-SOOH、R4-COSH的化合物中的至少一种，其中，R1~R4为氢、碳环、碳链中的任意一种；
所述抗氧化剂包括受阻酚类抗氧化剂和亚磷酸酯类抗氧化剂，其中，所述受阻酚类抗氧化剂为2,6-二丁基四甲酚BHT、氧化剂1010、抗氧化剂1076中的至少一种，所述亚磷酸酯类抗氧化剂为抗氧化剂TNP和抗氧化剂TPP中的至少一种。
2.根据权利要求1所述的防潮油，其特征在于，所述催干剂包括铅催干剂、锰催干剂、钴催干剂、锌催干剂和钙催干剂中的至少一种。
3.根据权利要求1所述的防潮油，其特征在于，根据权利要求1所述的防潮油，其特征在于，所述表面活性剂为十八烷基硫酸钠、硬脂酸钠、二辛基琥珀酸磺酸钠和十二烷基苯磺酸钠中的至少一种。
4.根据权利要求1所述的防潮油，其特征在于，包括以下质量百分比的组成：
丙烯酸树脂 10-18%
丙酮 40-50%
乙二醇单丁醚 8-12%
有机酸 8-12%
催干剂 5-8%
抗氧化剂 1-6%
表面活性剂 1-4%。
5.根据权利要求4所述的防潮油，其特征在于，包括以下质量百分比的组成：
丙烯酸树脂 18%
丙酮 45%
乙二醇单丁醚 12%
有机酸 10%
催干剂 8%
抗氧化剂 4%
表面活性剂 3%。
6.一种权利要求1~5任一项所述的防潮油的制备方法，其特征在于，包括以下步骤：
步骤一，按上述质量百分比，称取一定质量的上述各组分备用；
步骤二，将丙烯酸树脂和抗氧化剂加入到反应容器中，用分散搅拌机进行搅拌，搅拌时间为10~30分钟，使原料充分反应与溶解，制备成溶液A；
步骤三，在另一反应容器中加入有机酸、表面活性剂、丙酮、乙二醇单丁醚、催干剂，搅拌10~20分钟，使其充分混合溶解，制备成溶液B；
步骤四，往步骤二制得的溶液A中加入步骤三制得的溶液B，分散搅拌均匀，静置15~20小时，得到防潮油。
7.根据权利要求6所述的防潮油的制备方法，其特征在于，在步骤二中，所述搅拌速度为1500~2000转/分钟。
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