CN113512378A - 可提升铝电解电容器散热和阻燃的改性固定材料及其制备方法 - Google Patents
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Abstract
本发明公开了一种可提升铝电解电容器散热和阻燃的改性固定材料及其制备方法,该可提升铝电解电容器散热和阻燃的改性固定材料具有以下的组分及其重量百分比含量为PP树脂75%‑80%、导热剂5‑10%、阻燃剂5‑8%、功能改性剂3‑5%及分散剂2‑5%。制备方法为:按照PP树脂75%‑80%、导热剂5‑10%、阻燃剂5‑8%、功能改性剂3‑5%及分散剂2‑5%混合,然后,将混合物使用油浴炉加热到190℃并低速搅拌,最后,将加热后的混合物倒入模具冷却固化得到块状的改性固定材料。本发明的有益效果:制备原料简单易得,无毒,使用安全,环保无污染,耐高低温、耐老化、耐酸碱、导热阻燃性能好。制备工艺简单易操作,对设备要求不高,易实现,环保无污染,便于大规模产业化生产。
Description
技术领域
本发明涉及铝电解电容器固定材料的技术领域,特别涉及一种可提升铝 电解电容器散热和阻燃的改性固定材料及其制备方法。
背景技术
铝电解电容器在制造过程中,由于铝电解电容器的尺寸较大,为避免电 容器芯组在铝壳中产生晃动,一般要使用固定剂固定。现有固定剂的选用一 般有:PP树脂、聚氨酯胶、类沥青胶等。由于PP树脂具有低气味、环保、可 重复使用、耐酸碱、不与电解液反应、低温收缩率低、固化时间短的优势, 高品质的铝电解电容器一般选用PP树脂固定电容器芯组。但是,传统的PP树 脂胶不具备导热性,散热不佳,在密闭、无主动散热系统的工作环境下,不 易将高负荷产生的热量导出,从而影响电容器寿命。甚至在某些PP树脂中含 有杂质时,在铝电解电容器的超高温老化过程中,由于PP树脂散热性能差, 发生过燃烧事件。针对铝电解电容器行业对特殊材料的需求,设计一种导热 阻燃改性电容器芯组固定材料尤为必要。
发明内容
针对上述现有技术中存在的问题,本发明提供一种可提升铝电解电容器 散热和阻燃的改性固定材料及其制备方法。
为实现上述目的,本发明提出的可提升铝电解电容器散热和阻燃的改性 固定材料具有以下的组分及其重量百分比含量为:
优选地,PP树脂的密度为0.82-0.86g/cm3,分子量为300-10000,软化点 90-135℃,燃点300-330℃。
优选地,导热剂为氧化铝掺杂氧化镁的混合物,其中,氧化镁占比3%-30%, 氧化铝占比70%-97%,混合后的粒径为5-10纳米,密度为2.4-2.6g/cm3。
优选地,阻燃剂为氢氧化铝掺杂氢氧化镁的混合物,其中,氢氧化镁占 比5%-20%,氢氧化铝占比80%-95%,混合后的粒径为5-10纳米,密度为 2.4-2.6g/cm3。
优选地,功能改性剂为钛白粉、磷酸锌、氧化锆按照4:2:4的混合物。
优选地,分散剂为PE蜡。
与现有技术相比,本发明的有益效果在于:相较于用在铝电解电容器内 的传统的固定胶,该改性固定材料具有制备原料简单易得,原料无毒,使用 安全,环保无污染,在各组分的协同作用下呈现出耐高低温、耐老化、耐酸 碱、导热阻燃性能好、阻燃可达到V-1等级等优异性能,应用前景广阔。
本发明还提出一种制备可提升铝电解电容器散热和阻燃的改性固定材料 的方法:按照PP树脂75%-80%、导热剂5-10%、阻燃剂5-8%、功能改性剂3-5% 及分散剂2-5%混合,然后,将混合物使用油浴炉加热到190℃并低速搅拌,最 后,将加热后的混合物倒入模具冷却固化得到块状固体,即制得可提升铝电 解电容器散热和阻燃的改性固定材料。
优选地,PP树脂的密度为0.82-0.86g/cm3,分子量为300-10000,软化点 90-135℃,燃点300-330℃。导热剂为氧化铝掺杂氧化镁的混合物,其中,氧 化镁占比3%-30%,氧化铝占比70%-97%,混合后的粒径为5-10纳米,密度为 2.4-2.6g/cm3。阻燃剂为氢氧化铝掺杂氢氧化镁的混合物,其中,氢氧化镁占 比5%-20%,氢氧化铝占比80%-95%,混合后的粒径为5-10纳米,密度为 2.4-2.6g/cm3。功能改性剂为钛白粉、磷酸锌、氧化锆按照4:2:4的混合物。 的分散剂为PE蜡。
与现有技术相比,本发明的有益效果在于:制备工艺条件简单易操作, 对设备要求不高,易实现,环保无污染,便于大规模产业化生产。
具体实施方式
本具体实施方式采用如下技术方案:按照PP树脂85%、导热剂5%、阻燃剂5%、功能改性剂3%及分散剂2%混合。其中,PP树脂的密度为0.84g/cm3,分子 量为1200,软化点110℃,燃点310℃。导热剂为氧化铝掺杂氧化镁的混合物, 氧化镁占比20%,氧化铝占比80%,混合后的粒径为7纳米,密度为2.5g/cm3。 阻燃剂为氢氧化铝掺杂氢氧化镁的混合物,氢氧化镁占比12%,氢氧化铝占比 88%,混合后的粒径为7纳米,密度为2.5g/cm3。功能改性剂为钛白粉、磷酸锌、 氧化锆按照4:2:4的混合。分散剂为PE蜡。然后,将混合物使用油浴炉加热到 190℃并低速搅拌,最后,将加热后的混合物倒入模具冷却固化得到块状固体,即制得可提升铝电解电容器散热和阻燃的改性固定材料。
将按上述组分和比例制得的改性固定材料和传统的PP树脂(与本改性固 定材料中的PP树脂的物理和化学属性一致)在熔融状态下分别等量灌入到两 相同的空铝壳内,并在改性固定材料和传统的PP树脂内部分别埋上热电偶做 为测温线,待改性固定材料和传统的PP树脂均在空铝壳内自然冷却后,将两 测试样品均放置在85℃的环境温度下进行测试,得到以下表格1。
表格1
将按上述组分和比例制得的改性固定材料和传统的PP树脂(与本改性固 定材料中的PP树脂的物理和化学属性一致)在熔融状态下分别等量灌入到两 个完全相同的铝电解电容器产品(3300μF/400V 64*115)内,待改性固定材 料和传统的PP树脂自然冷却后,对铝电解电容器产品施加极限的纹波电流 8.2A,并将两个测试样品同时放置在85℃的恒温箱内,模拟铝电解电容器在 极限条件下的工作状态,测试铝电解电容器产品内外部的温差,得到以下表 格2。
表格2
从表格1和表格2中可以看出,在以上两种相同条件的情况下,本具体实 施方式制备的改性固定材料在各组分的协同作用下表现出的内外部温差均明 显小于传统的PP树脂内外部的温差,说明本具体实施方式制备的改性固定材 料在各组分的协同作用下比传统的PP树脂导热更快,在铝电解电容器的实际 运用中更有利电容器的散热,可以大大延长电容器的寿命。
而且,本具体实施方式制备的改性固定材料还具有制备原料简单易得, 原料无毒,使用安全,环保无污染,耐高低温、耐老化、耐酸碱、导热阻燃 性能好、阻燃可达到V-1等级等优异性能,应用前景广阔。同时,本具体实施 方式的制备工艺条件简单易操作,对设备要求不高,易实现,环保无污染, 便于大规模产业化生产。
以上所述仅为本发明的优选实施例,并非因此限制本发明的专利范围, 凡是在本发明的发明构思下,利用本发明说明书内容所作的等效结构变换, 或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。
Claims (8)
2.如权利要求1所述的可提升铝电解电容器散热和阻燃的改性固定材料,其特征在于,所述PP树脂的密度为0.82-0.86g/cm3,分子量为300-10000,软化点90-135℃,燃点300-330℃。
3.如权利要求1所述的可提升铝电解电容器散热和阻燃的改性固定材料,其特征在于,所述导热剂为氧化铝掺杂氧化镁的混合物,其中,所述氧化镁占比3%-30%,氧化铝占比70%-97%,混合后的粒径为5-10纳米,密度为2.4-2.6g/cm3。
4.如权利要求1所述的可提升铝电解电容器散热和阻燃的改性固定材料,其特征在于,所述阻燃剂为氢氧化铝掺杂氢氧化镁的混合物,其中,所述氢氧化镁占比5%-20%,氢氧化铝占比80%-95%,混合后的粒径为5-10纳米,密度为2.4-2.6g/cm3。
5.如权利要求1所述的可提升铝电解电容器散热和阻燃的改性固定材料,其特征在于,所述功能改性剂为钛白粉、磷酸锌、氧化锆按照4:2:4的混合物。
6.如权利要求1所述的可提升铝电解电容器散热和阻燃的改性固定材料,其特征在于,所述分散剂为PE蜡。
7.一种制备如权利要求1所述的可提升铝电解电容器散热和阻燃的改性固定材料的方法,其特征在于,按照PP树脂75%-80%、导热剂5-10%、阻燃剂5-8%、功能改性剂3-5%及分散剂2-5%混合,然后,将混合物使用油浴炉加热到190℃并低速搅拌,最后,将加热后的混合物倒入模具冷却固化得到块状固体,即制得可提升铝电解电容器散热和阻燃的改性固定材料。
8.如权利要求7所述的制备可提升铝电解电容器散热和阻燃的改性固定材料的方法,其特征在于,所述PP树脂的密度为0.82-0.86g/cm3,分子量为300-10000,软化点90-135℃,燃点300-330℃;所述导热剂为氧化铝掺杂氧化镁的混合物,其中,所述氧化镁占比3%-30%,氧化铝占比70%-97%,混合后的粒径为5-10纳米,密度为2.4-2.6g/cm3;所述阻燃剂为氢氧化铝掺杂氢氧化镁的混合物,其中,所述氢氧化镁占比5%-20%,氢氧化铝占比80%-95%,混合后的粒径为5-10纳米,密度为2.4-2.6g/cm3;所述功能改性剂为钛白粉、磷酸锌、氧化锆按照4:2:4的混合物;所述的分散剂为PE蜡。
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