CN109021814A - 一种紫外光固化水性聚氨酯漆包线漆的制作方法 - Google Patents
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Abstract
本发明公开了一种紫外光固化水性聚氨酯漆包线漆的制作方法。它包括以下步骤:合成含紫外固化基团的二元醇单体,控制单体分子量在850‑950之间,接着用该单体对水性聚氨酯预聚体扩链制得紫外光固化水性聚氨酯漆包线漆。采用上述方法后,使得所制备的漆包线漆不仅具有介电损耗小、表面平整度高、易染色、涂布速率高等优异性能,特别是最终制备的漆包线漆的漆液品质十分稳定、耐热冲性能及耐盐水针孔性能特别好且气味低,而且满足了节能、环保的要求,同时其生产成本控制在较低的范围内。
Description
技术领域
本发明涉及一种漆包线漆生产技术,具体地说是一种紫外光固化水性聚氨酯漆包线漆的制作方法。
背景技术
漆包线主要用作绕组线圈,其作用是在元器件工作的过程中,实现“电-磁”能量转换,所以漆包线也叫电磁线。漆包线漆的作用是使绕组中导线与导线之间产生一层良好的绝缘层,以阻止电流的流通。漆包线漆属于电气绝缘漆,除了要求具有良好的介电性、化学性能外,还必须具有优良的机械性能和热性能。随着工业电器、家用电器、电讯、电子产品等的迅速发展,近几年漆包线市场需求量急剧膨胀,这给漆包线产业带来了较广阔的应用领域和市场。目前常用的漆包线漆种类有缩醛、聚氨酯、聚酯、聚酯亚胺、聚酰胺酰亚胺、聚酯-酰胺亚胺等。其中聚氨酯漆包线漆最为常用。
目前聚氨酯漆包线漆主要采用对苯二甲酸二甲酯、乙二醇、甘油、甲酚、二甲酚、二甲苯等为主要原材料。使用上述原材料体系制备的聚氨酯漆包线漆具有介电损耗小、易染色、涂布速率高、优异的直焊性等优点。然而上述漆包线漆体系同样存在漆液品质不稳定、耐热冲性能及耐盐水针孔性能均欠佳,以及气味大且难以散尽等缺陷,引起漆包线漆及下游厂家生产环境恶劣,增加了企业的环境治理和用工成本,也给环境带来了严重污染。
发明内容
本发明要解决的技术问题是提供一种漆液品质稳定、耐热冲性能及耐盐水针孔性能好且气味低,环保的紫外光固化水性聚氨酯漆包线漆的制作方法。
为了解决上述技术问题,本发明的紫外光固化水性聚氨酯漆包线漆的制作方法,包括以下步骤:合成含紫外固化基团的二元醇单体,控制单体分子量在850-950之间,接着用该单体对水性聚氨酯预聚体扩链制得紫外光固化水性聚氨酯漆包线漆。
一种如上述的紫外光固化水性聚氨酯漆包线漆的制作方法,具体操作步骤如下:
A、将季戊四醇三丙烯酸酯、对羟基苯甲醚、丙酮、六亚甲基二异氰酸酯和三羟甲基乙烷转入三口烧瓶中,然后将其置于45-55℃恒温水浴中搅拌反应1-2h后缓慢升温至60-70℃继续反应2-3h;
B、向反应体系中滴加相应质量比的二甲氨基乙基醚、间苯二酚、碳酸丙烯酯、二甲苯、2-丙醇、聚己二酸1,4-丁二醇酯、二羟基甲基丙酸、甲基丙烯酸羟乙酯、对羟基苯甲醚、三乙胺、水性聚氨酯扩链剂和去离子水,缓慢升温至70-80℃反应3-4h,并将温度降至20-30℃;
C、加入光引发剂,制得可紫外光固化的水性聚氨酯漆包线漆乳液。
所述季戊四醇三丙烯酸酯、对羟基苯甲醚、丙酮、六亚甲基二异氰酸酯、三羟甲基乙烷、二甲氨基乙基醚、间苯二酚、碳酸丙烯酯、二甲苯、2-丙醇、聚己二酸1,4丁二醇酯、二羟基甲基丙酸、甲基丙烯酸羟乙酯、对羟基苯甲醚、三乙胺、水性聚氨酯扩链剂、光引发剂、去离子水分别占投料总重量的3%~5%、1.5%~3%、3%~4%、2%~3%、2.5%~4%、0.5%~1%、1.5%~2%、4%~6%、2.5%~3%、0.5%~1%、0.5%~1%、2%~3%、1%~3%、3%~3.5%、0.5%~1%、2%~3.5%、1%~3%和50%~69%。
采用上述方法后,通过合成含紫外固化基团的二元醇单体,控制单体分子量在900左右,接着用该单体对水性聚氨酯预聚体扩链制得紫外光固化水性聚氨酯漆包线漆并且在此过程中合理选用了各种成分以及限定了其具体的添加量,使得所制备的漆包线漆不仅具有介电损耗小、表面平整度高、易染色、涂布速率高等优异性能,特别是最终制备的漆包线漆的漆液品质十分稳定、耐热冲性能及耐盐水针孔性能特别好且气味低,而且满足了节能、环保的要求,同时其生产成本控制在较低的范围内。
具体实施方式
以下结合具体实施例对上述方案做进一步说明。应理解,这些实施例是用于说明本发明而不限于限制本发明的范围。实施例中采用的实施条件可以根据具体厂家的条件做进一步调整,未注明的实施条件通常为常规实验中的条件。
实施例1:
反应原料及百分比为季戊四醇三丙烯酸酯3%、对羟基苯甲醚1.5%、丙酮3%、六亚甲基二异氰酸酯2%、三羟甲基乙烷2.5%、二甲氨基乙基醚0.5%、间苯二酚1.5%、碳酸丙烯酯4%、二甲苯2.5%、2-丙醇0.5%、聚己二酸1,4丁二醇酯0.5%、二羟基甲基丙酸2%、甲基丙烯酸羟乙酯1%、对羟基苯甲醚3%、三乙胺0.5%、水性聚氨酯扩链剂2%、光引发剂(184)1%,其余为去离子,合计100%。其具体组成中各组分占投料总重量的百分比(100%)。
制作过程中,其具体操作步骤如下:
A、将季戊四醇三丙烯酸酯、对羟基苯甲醚、丙酮、六亚甲基二异氰酸酯和三羟甲基乙烷转入三口烧瓶中,然后将其置于45℃恒温水浴中搅拌反应1h后缓慢升温至60℃继续反应2h;
B、向反应体系中滴加相应质量比的二甲氨基乙基醚、间苯二酚、碳酸丙烯酯、二甲苯、2-丙醇、聚己二酸1,4-丁二醇酯、二羟基甲基丙酸、甲基丙烯酸羟乙酯、对羟基苯甲醚、三乙胺、水性聚氨酯扩链剂和去离子水,缓慢升温至70℃反应3h,并将温度降至20℃;
C、加入光引发剂,制得可紫外光固化的水性聚氨酯漆包线漆乳液。
实施例2:
反应原料及百分比为季戊四醇三丙烯酸酯5%、对羟基苯甲醚3%、丙酮4%、六亚甲基二异氰酸酯3%、三羟甲基乙烷4%、二甲氨基乙基醚1%、间苯二酚2%、碳酸丙烯酯6%、二甲苯3%、2-丙醇1%、聚己二酸1,4丁二醇酯1%、二羟基甲基丙酸3%、甲基丙烯酸羟乙酯3%、对羟基苯甲醚3.5%、三乙胺1%、水性聚氨酯扩链剂3.5%、光引发剂(184)3%,其余为去离子,合计50%。其具体组成中各组分占投料总重量的百分比(100%)。
A、将季戊四醇三丙烯酸酯、对羟基苯甲醚、丙酮、六亚甲基二异氰酸酯和三羟甲基乙烷转入三口烧瓶中,然后将其置于50℃恒温水浴中搅拌反应1h后缓慢升温至65℃继续反应2h;
B、向反应体系中滴加相应质量比的二甲氨基乙基醚、间苯二酚、碳酸丙烯酯、二甲苯、2-丙醇、聚己二酸1,4-丁二醇酯、二羟基甲基丙酸、甲基丙烯酸羟乙酯、对羟基苯甲醚、三乙胺、水性聚氨酯扩链剂和去离子水,缓慢升温至75℃反应3h,并将温度降至25℃;
C、加入光引发剂,制得可紫外光固化的水性聚氨酯漆包线漆乳液。
实施例3:
反应原料及百分比为季戊四醇三丙烯酸酯4%、对羟基苯甲醚2%、丙酮4%、六亚甲基二异氰酸酯2%、三羟甲基乙烷3%、二甲氨基乙基醚1%、间苯二酚1.5%、碳酸丙烯酯5%、二甲苯3%、2-丙醇1%、聚己二酸1,4丁二醇酯0.5%、二羟基甲基丙酸2.5%、甲基丙烯酸羟乙酯1.5%、对羟基苯甲醚3%、三乙胺1%、水性聚氨酯扩链剂2.5%、光引发剂(184)3%,其余为去离子,合计50%。其具体组成中各组分占投料总重量的百分比(100%)。
A、将季戊四醇三丙烯酸酯、对羟基苯甲醚、丙酮、六亚甲基二异氰酸酯和三羟甲基乙烷转入三口烧瓶中,然后将其置于50℃恒温水浴中搅拌反应2h后缓慢升温至65℃继续反应3h;
B、向反应体系中滴加相应质量比的二甲氨基乙基醚、间苯二酚、碳酸丙烯酯、二甲苯、2-丙醇、聚己二酸1,4-丁二醇酯、二羟基甲基丙酸、甲基丙烯酸羟乙酯、对羟基苯甲醚、三乙胺、水性聚氨酯扩链剂和去离子水,缓慢升温至75℃反应4h,并将温度降至25℃;
C、加入光引发剂,制得可紫外光固化的水性聚氨酯漆包线漆乳液。
实施例4:
反应原料及百分比为季戊四醇三丙烯酸酯4.5%、对羟基苯甲醚2.5%、丙酮3%、六亚甲基二异氰酸酯2.5%、三羟甲基乙烷3%、二甲氨基乙基醚0.5%、间苯二酚1.8%、碳酸丙烯酯5.5%、二甲苯2.8%、2-丙醇0.6%、聚己二酸1,4丁二醇酯0.5%、二羟基甲基丙酸2.5%、甲基丙烯酸羟乙酯1.5%、对羟基苯甲醚3%、三乙胺0.7%、水性聚氨酯扩链剂2.5%、光引发剂(184)2.5%,其余为去离子,合计100%。其具体组成中各组分占投料总重量的百分比(100%)。
A、将季戊四醇三丙烯酸酯、对羟基苯甲醚、丙酮、六亚甲基二异氰酸酯和三羟甲基乙烷转入三口烧瓶中,然后将其置于55℃恒温水浴中搅拌反应1h后缓慢升温至70℃继续反应3h;
B、向反应体系中滴加相应质量比的二甲氨基乙基醚、间苯二酚、碳酸丙烯酯、二甲苯、2-丙醇、聚己二酸1,4-丁二醇酯、二羟基甲基丙酸、甲基丙烯酸羟乙酯、对羟基苯甲醚、三乙胺、水性聚氨酯扩链剂和去离子水,缓慢升温至80℃反应3h,并将温度降至30℃;
C、加入光引发剂,制得可紫外光固化的水性聚氨酯漆包线漆乳液。
实施例5:
反应原料及百分比为季戊四醇三丙烯酸酯3.5%、对羟基苯甲醚2%、丙酮4%、六亚甲基二异氰酸酯2.8%、三羟甲基乙烷3%、二甲氨基乙基醚0.5%、间苯二酚2%、碳酸丙烯酯5.5%、二甲苯3%、2-丙醇0.7%、聚己二酸1,4丁二醇酯1%、二羟基甲基丙酸2.5%、甲基丙烯酸羟乙酯2.5%、对羟基苯甲醚3.5%、三乙胺0.8%、水性聚氨酯扩链剂3%、光引发剂(184)1.5%,其余为去离子,合计50%。其具体组成中各组分占投料总重量的百分比(100%)。
A、将季戊四醇三丙烯酸酯、对羟基苯甲醚、丙酮、六亚甲基二异氰酸酯和三羟甲基乙烷转入三口烧瓶中,然后将其置于55℃恒温水浴中搅拌反应2h后缓慢升温至70℃继续反应3h;
B、向反应体系中滴加相应质量比的二甲氨基乙基醚、间苯二酚、碳酸丙烯酯、二甲苯、2-丙醇、聚己二酸1,4-丁二醇酯、二羟基甲基丙酸、甲基丙烯酸羟乙酯、对羟基苯甲醚、三乙胺、水性聚氨酯扩链剂和去离子水,缓慢升温至80℃反应4h,并将温度降至30℃;
C、加入光引发剂,制得可紫外光固化的水性聚氨酯漆包线漆乳液。
经过试验验证,在100℃和150℃两种温度条件下,漆膜经过30分钟耐热试验后颜色稍微变深,而漆膜基本保持完整。随着温度的提高,漆膜出现少量的褶皱现象,尤其当温度提高到250℃,漆膜烘烤30分钟后,漆膜颜色由浅黄变灰,同时有大片漆膜脱落的现象。因此,本发明制备的漆液适合在200℃以内的环境中使用。
上述实例只为说明本发明的技术构思及特点,其目的在于让熟悉此项技术的人员能够了解本发明的内容并据以实施,并不能以此限制本发明的保护范围。凡根据本发明精神实质所做的等效变换或修饰,都应涵盖在本发明的保护范围之内。
Claims (3)
1.一种紫外光固化水性聚氨酯漆包线漆的制作方法,其特征在于,包括以下步骤:合成含紫外固化基团的二元醇单体,控制单体分子量在850-950之间,接着用该单体对水性聚氨酯预聚体扩链制得紫外光固化水性聚氨酯漆包线漆。
2.一种如权利要求1所述的紫外光固化水性聚氨酯漆包线漆的制作方法,其特征在于,具体操作步骤如下:
A、将季戊四醇三丙烯酸酯、对羟基苯甲醚、丙酮、六亚甲基二异氰酸酯和三羟甲基乙烷转入三口烧瓶中,然后将其置于45-55℃恒温水浴中搅拌反应1-2h后缓慢升温至60-70℃继续反应2-3h;
B、向反应体系中滴加相应质量比的二甲氨基乙基醚、间苯二酚、碳酸丙烯酯、二甲苯、2-丙醇、聚己二酸1,4-丁二醇酯、二羟基甲基丙酸、甲基丙烯酸羟乙酯、对羟基苯甲醚、三乙胺、水性聚氨酯扩链剂和去离子水,缓慢升温至70-80℃反应3-4h,并将温度降至20-30℃;
C、加入光引发剂,制得可紫外光固化的水性聚氨酯漆包线漆乳液。
3.按照权利要求1或2所述紫外光固化水性聚氨酯漆包线漆的制作方法,其特征在于:所述季戊四醇三丙烯酸酯、对羟基苯甲醚、丙酮、六亚甲基二异氰酸酯、三羟甲基乙烷、二甲氨基乙基醚、间苯二酚、碳酸丙烯酯、二甲苯、2-丙醇、聚己二酸1,4丁二醇酯、二羟基甲基丙酸、甲基丙烯酸羟乙酯、对羟基苯甲醚、三乙胺、水性聚氨酯扩链剂、光引发剂、去离子水分别占投料总重量的3%~5%、1.5%~3%、3%~4%、2%~3%、2.5%~4%、0.5%~1%、1.5%~2%、4%~6%、2.5%~3%、0.5%~1%、0.5%~1%、2%~3%、1%~3%、3%~3.5%、0.5%~1%、2%~3.5%、1%~3%和50%~69%。
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