CN109177342A - 一种导热导电型热收缩套管 - Google Patents
一种导热导电型热收缩套管 Download PDFInfo
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- CN109177342A CN109177342A CN201810912143.8A CN201810912143A CN109177342A CN 109177342 A CN109177342 A CN 109177342A CN 201810912143 A CN201810912143 A CN 201810912143A CN 109177342 A CN109177342 A CN 109177342A
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- hot melt
- melt adhesive
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Classifications
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Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
本发明公开了一种导热导电型热收缩套管,包括:复合成型的内层及外层,所述内层为导电型热熔胶层,由下列物质按照质量份数制备而成:热熔胶100份;抗氧剂0.5~3份;导电填料20~50份;润滑剂及其它助剂2~10份;增粘树脂5~10份;所述外层为导热型填充改性聚合物层,由下列物质按照质量份数制备而成:热塑性聚合物100份;抗氧剂0.5~2份;导热填料40~80份;润滑剂及其它助剂10~20份;交联助剂0.5~2份。本发明的导热导电型热收缩套管能够有效防止电磁信号干扰、防止静电破坏的同时具备导热功能,能够对航空航天、电脑、手机、电线、电缆等各类微电子产品进行有效密封保护。
Description
技术领域
本发明涉及热收缩套管领域,尤其涉及一种导热导电型热收缩套管。
背景技术
热缩套管又名热收缩保护套管,为电线、电缆和电线端子提供绝缘保护。具有高温收缩、柔软阻燃、绝缘防蚀等特性,广泛用于各种线束、焊点、电感的绝缘保护和金属管、棒的防锈、防蚀等。
现有的热收缩套管仅具有屏蔽电磁信号或抗静电或散热其中一种功能,对既具有电磁干扰、静电以及需要散热场合的作用有限。
发明内容
本发明的目的是提供一种导热导电型热收缩套管,既可实现导电、屏蔽电磁信号,又可进行导热,克服现有热收缩套管的不足。
本发明提供的技术方案如下:
一种导热导电型热收缩套管,包括:复合成型的内层及外层,所述内层为导电型热熔胶层,由下列物质按照质量份数制备而成:热熔胶100 份;抗氧剂0.5~3份;导电填料20~50份;润滑剂及其它助剂2~10份;增粘树脂5~10份;所述外层为导热型填充改性聚合物层,由下列物质按照质量份数制备而成:热塑性聚合物100份;抗氧剂0.5~2份;导热填料40~80份;润滑剂及其它助剂10~20份;交联助剂0.5~2份。
进一步,所述热熔胶由聚酰胺热熔胶、乙烯醋酸乙烯酯热熔胶其中的一种或两种按照一定质量分数比例组成。
进一步,制备所述导电型热熔胶层中的导电填料由银粉、镍粉、锡粉、钛粉、铝粉、铜粉、镀银玻璃微珠、石墨、碳纳米管、石墨烯中的一种或多种进行复合组成。
进一步,制备所述导电型热熔胶层中的润滑剂及其它助剂由PE蜡、硬脂酸锌、偶联剂组成,其中偶联剂为钛酸酯偶联剂、硅烷偶联剂、铝酸酯偶联剂中的一种或两种。
进一步,制备所述导电型热熔胶层中的增粘树脂由石油树脂、松香、氢化松香树脂、萜烯树脂等其中的一种或两种组成。
进一步,制备所述导热型填充改性聚合物层的热塑性聚合物由氟橡胶、高密度聚乙烯、低密度聚乙烯、乙丙橡胶、氟塑料、聚氯乙烯、聚氨酯、聚对苯二甲酸乙二醇酯、聚己内酯、反式聚异戊二烯、乙烯-醋酸乙烯共聚物、乙烯-辛烯共聚物、聚丙烯、苯乙烯-丁二烯其中的任一种或多种按照一定比例熔融共混制备而成。
进一步,制备所述导热型填充改性聚合物层的抗氧剂为双(3,5-三级丁基-4-羟基苯基)硫醚、双硬脂酰基硫代双丙酸脂(DSTDP)、硫代二丙酸双月桂酯中的一种。
进一步,制备所述导热型填充改性聚合物层的导热填料由氧化铝、氮化铝、氮化硅、氮化硼、碳化硅、氧化镁、氧化锌中的任一种或多种组合而成。
进一步,制备所述导热型填充改性聚合物层的润滑剂及其它助剂由 PE蜡、偶联剂、石蜡油组成,其中偶联剂为钛酸酯偶联剂、硅烷偶联剂铝酸酯偶联剂中的一种或两种。
进一步,所述导电型热熔胶层对应的导电型热熔胶粒子的造粒挤出温度为60-150℃;所述导热型填充改性聚合物层对应的导热型填充改性聚合物粒子的造粒挤出温度为120-270℃。
与现有技术相比,本发明的导热导电型热收缩套管有益效果在于:
本发明的导热导电型热收缩套管能够有效防止电磁信号干扰、防止静电破坏的同时具备导热功能,能够对航空航天、电脑、手机、电线、电缆等各类微电子产品进行有效密封保护,散热、防静电及电磁干扰。同时本发明中的配方设计符合当前电子电器产品国际环保标准,由本配方生产产品收缩倍率高、轴向变化率低等优点。
具体实施方式
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将说明本发明的具体实施方式。显而易见地,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以获得其他的实施方式。
在本发明实施例提供了一种导热导电型热收缩套管,包括:复合成型的内层及外层,所述内层为导电型热熔胶层,由下列物质按照质量份数制备而成:热熔胶100份;抗氧剂0.5~3份;导电填料20~50份;润滑剂及其它助剂2~10份;增粘树脂5~10份;所述外层为导热型填充改性聚合物层,由下列物质按照质量份数制备而成:热塑性聚合物100份;抗氧剂0.5~2份;导热填料40~80份;润滑剂及其它助剂10~20份;交联助剂0.5~2份。
具体的,内层采用热熔胶作为主体,使内层在常温状态下固化,升高到一定温度时变为流动状态,更好地实现密封作用。内层采用导电填料,使内层具有导电功能,同时实现屏蔽电磁信号。另外,导电填料可以选择导热能力高、导电能力好的材料,使内层在具有导电功能的同时,有一定的导热功能。加入一定的增粘树脂能够让热熔胶的粘性更佳,提高内层的密封粘附作用。
外层热塑性聚合物与内胶层复合,以保持内层成型。导热填料的选择是为了使外层具有导热功能,当然,热收缩套管需要具有绝缘功能,因此,导热填料在选择时除了要考虑导热功能外,还要考虑绝缘功能。
在本发明实施例中,热熔胶由聚酰胺热熔胶、乙烯醋酸乙烯酯热熔胶其中的一种或两种按照一定质量分数比例组成。
具体的,当同时使用聚酰胺热熔胶、乙烯醋酸乙烯酯热熔胶时,两者按照质量份数比例有多种,例如:聚酰胺热熔胶30份,乙烯醋酸乙烯酯热熔胶70份;或者,聚酰胺热熔胶40份,乙烯醋酸乙烯酯热熔胶60 份;或者,聚酰胺热熔胶20份,乙烯醋酸乙烯酯热熔胶80份;或者,聚酰胺热熔胶80份,乙烯醋酸乙烯酯热熔胶20份等。而内层的抗氧剂、导电填料、润滑剂及其它助剂和增粘树脂会随着热熔胶的组成在其对应的份数中进行微调。
在本发明实施例中,制备所述导电型热熔胶层中的抗氧剂为2,6- 三级丁基-4-甲基苯酚、三(十二碳醇)酯和三(十六碳醇)酯、四〔β-(3, 5-三级丁基-4-羟基苯基)丙酸〕季戊四醇酯、双十二碳醇酯中的一种或两种组合而成。
在本发明实施例中,制备所述导电型热熔胶层中的导电填料由银粉、镍粉、锡粉、钛粉、铝粉、铜粉、镀银玻璃微珠、石墨、碳纳米管、石墨烯中的一种或多种进行复合组成。
具体的,上述这些材料具有导电的功能的同时,也具有导热功能。
在本发明实施例中,制备所述导电型热熔胶层中的润滑剂及其它助剂由PE蜡、硬脂酸锌、偶联剂组成,其中偶联剂为钛酸酯偶联剂、硅烷偶联剂、铝酸酯偶联剂中的一种或两种。
具体的,偶联剂在选择时需要考虑填料与偶联剂的特性,使填料表面改性效果最优,最终使制成的导电型热熔胶层、导热型填充改性聚合物层中填料与基体材料界面结合性能更好,同时利于复合成型加工。
在本发明实施例中,制备所述导电型热熔胶层中的增粘树脂由石油树脂、松香、氢化松香树脂、萜烯树脂等其中的一种或两种组成。
在本发明实施例中,制备所述导热型填充改性聚合物层的热塑性聚合物由氟橡胶、高密度聚乙烯、低密度聚乙烯、乙丙橡胶、氟塑料、聚氯乙烯、聚氨酯、聚对苯二甲酸乙二醇酯、聚己内酯、反式聚异戊二烯、乙烯-醋酸乙烯共聚物、乙烯-辛烯共聚物、聚丙烯、苯乙烯-丁二烯其中的任一种或多种按照一定比例熔融共混制备而成。
在本发明实施例中,制备所述导热型填充改性聚合物层的抗氧剂为双(3,5-三级丁基-4-羟基苯基)硫醚、双硬脂酰基硫代双丙酸脂(DSTDP)、硫代二丙酸双月桂酯中的一种。
在本发明实施例中,制备所述导热型填充改性聚合物层的导热填料由氧化铝、氮化铝、氮化硅、氮化硼、碳化硅、氧化镁、氧化锌中的任一种或多种组合而成。
在本发明实施例中,制备所述导热型填充改性聚合物层的润滑剂及其它助剂由PE蜡、偶联剂、石蜡油组成,其中偶联剂为钛酸酯偶联剂、硅烷偶联剂、铝酸酯偶联剂中的一种或两种。
在本发明实施例中,制备所述导热型填充改性聚合物层的交联助剂选自甲基丙烯酸羟乙酯、甲基丙烯酸羟丙酯、季戊四醇三丙烯酸酯、三烯丙基异氰脲酸酯中的一种或两种。
本实施例的导热导电型热收缩套管的制备过程为:
根据热熔胶、抗氧剂、导电填料、润滑剂及其它助剂和增粘树脂制成导电型热熔胶粒子,其造粒挤出温度为60-150℃,根据各材料比例的不同在此范围内进行调整。
根据热塑性聚合物、抗氧剂、导热填料、润滑剂及其它助剂和交联助剂制成导热型填充改性聚合物粒子,其造粒挤出温度为120-270℃,根据各材料以及比例的不同在此范围内进行调整。
将导电型热熔胶粒子和导热型填充改性聚合物粒子通过特殊的复合设备进行熔融共挤,制备双层管材,通过高能射线辐照交联,最后通过加热扩张定型。
优选地,辐照电子加速器的参数为2.5Mev、10mA,辐照剂量为80~ 120kGY,辐照速度为80~120m/min;扩张时的加热温度为150±30℃,压力为140±20Kpa,内径扩张控制倍率为1.5~4倍。
本发明的导热导电型热收缩套管利用高分子材料辐照交联后的结构变化,使其具备记忆效应;在加热及外力作用下使其扩张并冷却定型;使用时,由于记忆效应,在加热作用下回复到扩张前的状态。
本发明的导热导电型热收缩套管可作为电子电器的套管,能够有效防止电磁信号干扰、防止静电破坏的同时具备导热功能,能够对航空航天、电脑、手机、电线、电缆等各类微电子产品进行有效密封保护,散热、防静电及电磁干扰。同时本发明中的配方设计符合当前电子电器产品国际环保标准,由本配方生产产品收缩倍率高、轴向变化率低等优点。
实施例1:
首先取乙烯醋酸乙烯酯热熔胶10份、聚酰胺热熔胶90份、四〔β-(3,5-三级丁基-4-羟基苯基)丙酸〕季戊四醇酯2份、铜粉30份、钛酸酯偶联剂1份、PE蜡3份、硬脂酸锌1份、松香5份及萜烯树脂5份混合后造粒得到导电型热熔胶粒子,造粒温度控制在90-150℃之间。另取乙烯-醋酸乙烯共聚物80份、乙烯-辛烯共聚物20份,双(3,5-三级丁基-4-羟基苯基)硫醚1.5份、氮化铝50份、硅烷偶联剂2份、石蜡油3 份、PE蜡5份、季戊四醇三丙烯酸酯1份混合造粒得到导热型填充改性聚合物粒子,造粒温度控制在100-150℃之间。将上述两种粒子置于特殊的复合设备中熔融共挤,得到内层为导电型热熔胶层、外层为导热型填充改性聚合物层的双壁复合管,再将双壁复合管通过高能射线辐照交联,最后通过加热扩张定型即得到本发明的一种导热导电型热收缩套管。
实施例2:
首先取聚酰胺热熔胶100份、双十二碳醇酯2份、镍粉25份、硅烷偶联剂2份、PE蜡4份、硬脂酸锌1份、萜烯树脂2份、石油树脂4份混合后造粒得到导电型热熔胶粒子,造粒温度控制在90-150℃之间。另取氟橡胶90份、反式异戊二烯10份、硫代二丙酸双月桂酯0.5份、氧化铝60份、硅烷偶联剂1份、石蜡油3份、PE蜡7份、甲基丙烯酸羟丙酯2份混合造粒得到导热型填充改性聚合物粒子,造粒温度控制在 150-270℃之间。将上述两种粒子置于特殊的复合设备中熔融共挤,得到内层为导电型热熔胶层、外层为导热型填充改性聚合物层的双层复合管,再将双层复合管通过高能射线辐照交联,最后通过加热扩张定型即得到本发明的一种导热导电型热收缩套管。
实施例3:
首先取乙烯醋酸乙烯酯热熔胶100份、四〔β-(3,5-三级丁基-4-羟基苯基)丙酸〕季戊四醇酯2份、石墨40份、铝酸酯偶联剂1.5份、PE蜡3 份、硬脂酸锌2份、石油树脂4份及萜烯树脂4份混合后造粒得到导电型热熔胶粒子,造粒温度控制在60-100℃之间。另取低密度聚乙烯30份、乙烯-醋酸乙烯共聚物70份、双硬脂酰基硫代双丙酸脂(DSTDP)1份、氮化硅(SiN)45份、硅烷偶联剂3.5份、石蜡油5份、PE蜡6份、甲基丙烯酸羟乙酯0.5份共混造粒得到导热型填充改性聚合物粒子,造粒温度控制在120-150℃之间。将上述两种粒子置于特殊的复合设备中熔融共挤,得到内层为导电型热熔胶层、外层为导热型填充改性聚合物层的双层复合管,再将双层复合管通过高能射线辐照交联,最后通过加热扩张冷却定型即得到本发明的一种导热导电型热收缩套管。
实施例4:
首先取乙烯醋酸乙烯酯热熔胶70份、聚酰胺热熔胶30份、2,6-三级丁基-4-甲基苯酚1.5份、镀银玻璃微珠20份、钛粉20份、钛酸酯偶联剂2 份、铝酸酯偶联剂2份、PE蜡3份、硬脂酸锌1份、氢化松香树脂4份及萜烯树脂2份混合后造粒得到导电型热熔胶粒子,造粒温度控制在60-120℃之间。另取高密度聚乙烯30份、低密度聚乙烯40份、氟橡胶10份、乙烯- 醋酸乙烯共聚物10份、乙烯辛烯共聚物5份、乙丙橡胶5份、双硬脂酰基硫代双丙酸脂(DSTDP)1.5份、氮化硼45份、氧化镁20份、铝酸酯偶联剂1.5份、钛酸酯偶联剂2份、石蜡油6份、PE蜡6份、三烯丙基异氰脲酸酯0.5份、季戊四醇三丙烯酸酯0.5份共混造粒得到导热型填充改性聚合物粒子,造粒温度控制在150-220℃之间。将上述两种粒子置于特殊的复合设备中熔融共挤,得到内层为导电型热熔胶层、外层为导热型填充改性聚合物层的双层复合管,再将双层复合管通过高能射线辐照交联,最后通过加热扩张冷却定型即得到本发明的一种导热导电型热收缩套管。
应当说明的是,上述实施例均可根据需要自由组合。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 (10)
1.一种导热导电型热收缩套管,其特征在于,包括:复合成型的内层及外层,所述内层为导电型热熔胶层,由下列物质按照质量份数制备而成:
热熔胶100份;
抗氧剂0.5~3份;
导电填料20~50份;
润滑剂及其它助剂2~10份;
增粘树脂5~10份;
所述外层为导热型填充改性聚合物层,由下列物质按照质量份数制备而成:
热塑性聚合物100份;
抗氧剂0.5~2份;
导热填料40~80份;
润滑剂及其它助剂10~20份;
交联助剂0.5~2份。
2.如权利要求1所述的导热导电型热收缩套管,其特征在于,所述热熔胶由聚酰胺热熔胶、乙烯醋酸乙烯酯热熔胶其中的一种或两种按照一定质量分数比例组成。
3.如权利要求1所述的导热导电型热收缩套管,其特征在于,制备所述导电型热熔胶层中的导电填料由银粉、镍粉、锡粉、钛粉、铝粉、铜粉、镀银玻璃微珠、石墨、碳纳米管、石墨烯中的一种或多种进行复合组成。
4.如权利要求1所述的导热导电型热收缩套管,其特征在于,制备所述导电型热熔胶层中的润滑剂及其它助剂由PE蜡、硬脂酸锌、偶联剂组成,其中偶联剂为钛酸酯偶联剂、硅烷偶联剂、铝酸酯偶联剂中的一种或两种。
5.如权利要求1所述的导热导电型热收缩套管,其特征在于,制备所述导电型热熔胶层中的增粘树脂由石油树脂、松香、氢化松香树脂、萜烯树脂等其中的一种或两种组成。
6.如权利要求1所述的导热导电型热收缩套管,其特征在于,制备所述导热型填充改性聚合物层的热塑性聚合物由氟橡胶、高密度聚乙烯、低密度聚乙烯、乙丙橡胶、氟塑料、聚氯乙烯、聚氨酯、聚对苯二甲酸乙二醇酯、聚己内酯、反式聚异戊二烯、乙烯-醋酸乙烯共聚物、乙烯-辛烯共聚物、聚丙烯、苯乙烯-丁二烯其中的任一种或多种按照一定比例熔融共混制备而成。
7.如权利要求1所述的导热导电型热收缩套管,其特征在于,制备所述导热型填充改性聚合物层的抗氧剂为双(3,5-三级丁基-4-羟基苯基)硫醚、双硬脂酰基硫代双丙酸脂(DSTDP)、硫代二丙酸双月桂酯中的一种。
8.如权利要求1所述的导热导电型热收缩套管,其特征在于,制备所述导热型填充改性聚合物层的导热填料由氧化铝、氮化铝、氮化硅、氮化硼、碳化硅、氧化镁、氧化锌中的任一种或多种组合而成。
9.如权利要求1所述的导热导电型热收缩套管,其特征在于,制备所述导热型填充改性聚合物层的润滑剂及其它助剂由PE蜡、偶联剂、石蜡油组成,其中偶联剂为钛酸酯偶联剂、硅烷偶联剂、铝酸酯偶联剂中的一种或两种。
10.如权利要求1-9任意一项所述的导热导电型热收缩套管,其特征在于:
所述导电型热熔胶层对应的导电型热熔胶粒子的造粒挤出温度为60-150℃;
所述导热型填充改性聚合物层对应的导热型填充改性聚合物粒子的造粒挤出温度为120-270℃。
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CN114316465A (zh) * | 2021-12-13 | 2022-04-12 | 李庆安 | 一种基于电缆光缆包覆用强热塑性复合材料及其制作方法 |
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