CN111732917A - 一种导磁压敏胶及其制备方法以及导磁胶黏带 - Google Patents
一种导磁压敏胶及其制备方法以及导磁胶黏带 Download PDFInfo
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Abstract
本发明提供一种导磁压敏胶,包括如下配方的组分:15‑30重量份的1,6‑己二醇二丙烯酸盐凝胶,20‑40重量份的丙烯酸异辛酯、18‑36重量份的AA精丙烯酸,10‑20重量份的1‑羟基环己基苯基酮,10‑20重量份的十二硫醇;3‑8重量份的磁性粉料,其中1,6‑己二醇二丙烯酸盐凝胶的制备方法为:将1,6‑己二醇二丙烯酸盐和三乙醇胺重量份数3:1‑2的混合溶液中加入过硫酸盐混合均匀,制得1,6‑己二醇二丙烯酸盐凝胶。本发明UV光对制备过程进行处理,而非采用加热,加工方式简单,生产更加节能环保,并且制得的压敏胶对高温和低温都有很强的耐候性。
Description
技术领域
本发明属于胶黏剂技术领域,涉及一种导磁压敏胶及其制备方法以及导磁胶黏带。
背景技术
随着电子产品的不断迭代更新,消费类电子、汽车电子产品逐渐走向高频大电流、低功耗、低成本、薄型化的方向,功率电感具有生产速度快、自动化程度高、电性稳定的几大优势,在电子产品中的使用广泛;但磁芯也有一些缺陷:产品涂胶后胶黏剂分布不够均匀致密,铜线与磁胶间有空隙,通过电流时会有噪音产生,并且该类型磁芯的功耗值比较大。
5G技术使得5G电子电器和仪器仪表工业得以发展,这些电子元器件中有较多为磁性元件,磁性元件由磁性材料制成,而这些磁性元件之间的黏结和密封需要用到导磁胶黏剂。导磁胶粘剂是一种既具有导磁功能又具有粘结性能的功能性粘结剂,其是由树脂主体、增韧剂、固化剂、磁性填料等组成,通过特定条件进行固化,固化后的胶层能表现出优良的导磁的性质。导磁胶粘剂主要应用在磁性元件的粘接与密封当中。树脂主体起介质和黏结作用,目前导磁胶黏剂的树脂主体一般为环氧树脂、硅脂、聚酰亚胺等,这些树脂的固化工艺需要较高的温度,不利于磁性元件的黏贴、封装等工序的操作,同时这些树脂材料为一次性材料,固化后即完成黏结任务,拆卸即需要破坏材料的结构,不能再次撕除、重复利用,故在有些场合下使用不方便。
发明内容
本发明目的是针对现有技术中电子设备中常用的压敏胶封装操作复杂,不能多次撕除的问题,对压敏胶组分配方及制备方法进行深度研发,得到一种具有较高黏度的压敏胶,粘结后的导磁体具有牢固、耐磨、应力小、电阻率高、对温度变化不敏感,并能提高元器件的导磁性能等一系列优点。
为达以上目的,具体方案如下:
一种导磁压敏胶,包括如下配方的组分:15-30重量份的1,6-己二醇二丙烯酸盐凝胶,20-40重量份的丙烯酸异辛酯、18-36重量份的AA精丙烯酸,10-20重量份的1-羟基环己基苯基酮,10-20重量份的十二硫醇;3-8重量份的磁性粉料,其中1,6-己二醇二丙烯酸盐凝胶的制备方法为:将1,6-己二醇二丙烯酸盐和三乙醇胺重量份数3:1-2的混合溶液中加入过硫酸盐混合均匀,制得1,6-己二醇二丙烯酸盐凝胶。
其中过硫酸盐为硫酸锌或硫酸镁的任一种,1,6-己二醇二丙烯酸盐为锌盐或镁盐。
所述的AA精丙烯酸,制备方法为:丙烯氧化产物经水吸收和精馏而得到含有10~1000ppm丙烯醛、糠醛和/或苯甲醛等杂质的粗丙烯酸为原料,往粗丙烯酸中加入阻聚剂对苯二酚,选择含3~10碳原子的醇类物质为脱醛试剂先与粗丙烯酸中的醛进行反应,然后进行间歇或连续减压精馏,减压精馏真空度为0.1~50kPa,优选0.5~20kPa,得到醛含量为零并且丙烯酸纯度达99.80%以上的聚合级精丙烯酸,然后在聚合级精丙烯酸中加入丙烯酸重量份数0.1-3%的白藜芦醇,2000LEX200-500nm光照下聚合20min,得到AA精丙烯酸。
优选地,在制备AA精丙烯酸过程中,在聚合级精丙烯酸中加入丙烯酸重量份数0.1-0.5%的白藜芦醇。
优选地,组分配方如下:15-25重量份的1,6-己二醇二丙烯酸盐凝胶,30-40重量份的丙烯酸异辛酯、20-30重量份的AA精丙烯酸,10-20重量份的1-羟基环己基苯基酮,10-20重量份的十二硫醇;3-5重量份的磁性粉料。
优选地,1,6-己二醇二丙烯酸盐凝胶和磁性粉料的重量份数比为5-6:1。
磁性粉料为铁硅、铁硅铬、铁硅铝、羰基铁粉的混合物,其各组分的重量份数比为;铁硅:铁硅铬:铁硅铝:羰基铁粉=1:5:2:3。
一种导磁压敏胶的制备方法,其包括如下步骤:首先将1,6-己二醇二丙烯酸盐凝胶和磁性粉料混合均匀,然后加入丙烯酸异辛酯、1-羟基环己基苯基酮、十二硫醇,加入容器搅拌均匀,最后在强度2200lex波长500nm光照下加入AA精丙烯酸;光照搅拌20-50min,制得导磁压敏胶。
一种导磁胶黏带,采用了本发明的导磁压敏胶涂布制得。
本发明与现有技术不同之处在于本发明取得了如下技术效果:
1、本发明UV光对制备过程进行处理,而非采用加热,加工方式简单,生产更加节能环保,并且制得的压敏胶对高温和低温都有很强的耐候性。
2、本发明的本发明通过特殊处理的AA精丙烯酸,在耐高温方面有预料不到的技术效果,并且与现有的导磁压敏胶相比,黏度更强的同时耐高温时间更长。
3、本发明通过大量的创新和测试,发现特殊制备的1,6-己二醇二丙烯酸盐凝胶和磁性粉料的重量份数比为5-6:1时,制得的导磁压敏胶黏度在高温80℃和低温50℃下3H黏度变化较小,磁导率变化不明显,可以广泛用于高气压或低气压地区的电子通信设备。
具体实施方式
下面将结合本发明中的实施例,对分发明中的技术方案进行清楚、完整地描述。显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
本发明提供一种导磁压敏胶,包括如下组分:1,6-己二醇二丙烯酸盐凝胶、丙烯酸异辛酯、AA精丙烯酸、1-羟基环己基苯基酮、十二硫醇、磁性粉料。
其中1,6-己二醇二丙烯酸盐凝胶的制备方法为:将1,6-己二醇二丙烯酸锌和三乙醇胺重量份数3:1-2的混合溶液中加入过硫酸锌混合均匀,过硫酸锌和1,6-己二醇二丙烯酸锌的重量份数比为1:20-30,制得1,6-己二醇二丙烯酸盐凝胶。。
其中AA精丙烯酸的制备工艺为:将丙烯氧化产物经水吸收和精馏而得到含有10~1000ppm丙烯醛、糠醛和/或苯甲醛等杂质的粗丙烯酸为原料,往粗丙烯酸中加入阻聚剂对苯二酚,选择含3~10碳原子的醇类物质为脱醛试剂先与粗丙烯酸中的醛进行反应,然后进行间歇或连续减压精馏,减压精馏真空度为0.1~50kPa,优选0.5~20kPa,得到醛含量为零和丙烯酸纯度达99.80%以上的聚合级精丙烯酸,然后在聚合级精丙烯酸中加入丙烯酸重量份数0.1-0.5%的白藜芦醇,2000LEX200-500nm光照下聚合20min,得到AA精丙烯酸。
实施例1
本实施例提供一种导磁压敏胶,包括如下重量份的组分:15重量份的1,6-己二醇二丙烯酸盐凝胶,30重量份的丙烯酸异辛酯、30重量份的AA精丙烯酸、12重量份的1-羟基环己基苯基酮,15重量份的十二硫醇和3重量份的磁性粉料。
该导磁压敏胶的制备方法为:首先将1,6-己二醇二丙烯酸盐凝胶和磁性粉料混合均匀,然后加入丙烯酸异辛酯、1-羟基环己基苯基酮、十二硫醇,加入容器搅拌均匀,最后在强度2200lex波长500nm光照下加入AA精丙烯酸;光照搅拌20-50min,制得实施例1的导磁压敏胶。
使用和测定方法:将制得的导磁压敏胶涂覆在导磁体上,用JDZ-2A磁导率测定仪进行磁导率测定。
实施例2、3、4、5、6、7、8、9、10、11、12制备方法如实施例1,配方如下:
对比例1
本实施例提供一种压敏胶,包括如下重量份的组分:15重量份的1,6-己二醇二丙烯酸盐凝胶,30重量份的丙烯酸异辛酯、30重量份的普通丙烯酸、12重量份的1-羟基环己基苯基酮,15重量份的十二硫醇和3重量份的磁性粉料。
该电压敏胶的制备方法为:首先将1,6-己二醇二丙烯酸盐凝胶和磁性粉料混合均匀,然后加入丙烯酸异辛酯、1-羟基环己基苯基酮、十二硫醇,加入容器搅拌均匀,最后在强度2200lex波长500nm光照下加入丙烯酸;光照搅拌20-50min,制得对比例1的压敏胶。
使用和测定方法:将制得的压敏胶涂覆在导磁体上,用JDZ-2A磁导率测定仪进行磁导率测定。对比例2-12制备方法相同,具体配方如下:
将实施例1-12和对比例1-12的黏度和抗静电效果进行对比测试,结果如下:
对比例1-12的测试结果为:
通过以上实施例可以看出,实施例1-12与对比例1-12相比,高温和低温处理后黏度方面实施例1-12优势明显,尤其是实施例4、7、10在黏度方面有着巨大的优势,尤在磁导率方面,实施例磁导率高,并且耐候性更强,所以综合来看本发明与现有技术相比,本发明与现有技术相比,有着突出的优势。
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (9)
1.一种导磁压敏胶,包括如下配方的组分:15-30重量份的1,6-己二醇二丙烯酸盐凝胶,20-40重量份的丙烯酸异辛酯、18-36重量份的AA精丙烯酸,10-20重量份的1-羟基环己基苯基酮,10-20重量份的十二硫醇;3-8重量份的磁性粉料。
2.根据权利要求1所述的导磁压敏胶,其特征在于:1,6-己二醇二丙烯酸盐凝胶的制备方法为:将1,6-己二醇二丙烯酸盐和三乙醇胺重量份数1:1的混合溶液中加入过硫酸盐混合均匀,制得1,6-己二醇二丙烯酸盐凝胶。
3.根据权利要求2所述的导磁压敏胶,其特征在于:所述的过硫酸盐为硫酸锌或硫酸镁的任一种。
4.根据权利要求1所述的导磁压敏胶,其特征在于:AA精丙烯酸的制备方法为:丙烯氧化产物经水吸收和精馏而得到含有10~1000ppm丙烯醛、糠醛和/或苯甲醛等杂质的粗丙烯酸为原料,往粗丙烯酸中加入阻聚剂对苯二酚,选择含3~10碳原子的醇类物质为脱醛试剂先与粗丙烯酸中的醛进行反应,然后进行间歇或连续减压精馏,减压精馏真空度为0.1~50kPa,得到醛含量为零并且丙烯酸纯度达99.80%以上的聚合级精丙烯酸,然后在聚合级精丙烯酸中加入丙烯酸重量份数0.1-0.5%的白藜芦醇,
2000LEX200-500nm光照下聚合20min,得到AA精丙烯酸。
5.根据权利要求4所述的导磁压敏胶,其特征在于:在制备AA精丙烯酸过程中,在聚合级精丙烯酸中加入丙烯酸重量份数0.1-0.5%的白藜芦醇。
6.根据权利要求1所述的导磁压敏胶,其特征在于:组分配方如下:15-25重量份的1,6-己二醇二丙烯酸盐凝胶,30-40重量份的丙烯酸异辛酯、20-30重量份的AA精丙烯酸,10-20重量份的1-羟基环己基苯基酮,10-20重量份的十二硫醇;3-5重量份的磁性粉料。
7.根据权利要求1所述的导磁压敏胶,其特征在于:1,6-己二醇二丙烯酸盐凝胶和磁性粉料的重量份数比为5-6:1。
8.一种权利要求1-7任一项所述的导磁压敏胶的制备方法,其包括如下步骤:首先将1,6-己二醇二丙烯酸盐凝胶和磁性粉料混合均匀,然后加入丙烯酸异辛酯、1-羟基环己基苯基酮、十二硫醇,加入容器搅拌均匀,最后在强度2200lex波长500nm光照下加入AA精丙烯酸;光照搅拌20-50min,制得导磁压敏胶。
9.一种导磁胶黏带,其特征在于:采用了权利要求1-7任一项所述的导磁压敏胶涂布制得。
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