CN108084534A - 一种电气设备用绝缘材料的制备方法 - Google Patents

一种电气设备用绝缘材料的制备方法 Download PDF

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CN108084534A
CN108084534A CN201810000424.6A CN201810000424A CN108084534A CN 108084534 A CN108084534 A CN 108084534A CN 201810000424 A CN201810000424 A CN 201810000424A CN 108084534 A CN108084534 A CN 108084534A
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孙光明
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Ma On Electric Technology Co Ltd
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Abstract

本发明提供一种电气设备用绝缘材料的制备方法,包括以下步骤:a、将废弃橡胶、环氧树脂和硅橡胶混合导入密炼机中密炼至熔融状态,再依次加入阻燃剂、纳米二氧化硅和炭黑,将温度降低密炼,得到混合物一;b、将加工辅料、聚酰亚胺、海藻酸钠、木质素和抗氧化剂混合置于混料机中,加热并超声振荡,得到混合物二;c、向混合物二中加入硅油、偶联剂,置于搅拌器中搅拌,再置于真空环境下脱泡处理,得到混合物三;d、将混合物一、混合物三、有机锡和固化剂混合均匀后导入单螺杆中挤出,再导入脱水机中脱水,再置于密封容器中静置、固化、塑型。本发明方法简单、制备流程短,主要采用废旧橡胶原料,具有一定的环保意义。

Description

一种电气设备用绝缘材料的制备方法
技术领域
本发明属于电气设备技术领域,具体涉及一种电气设备用绝缘材料的制备方法。
背景技术
现阶段,电气产业处于高速发展时期,而且将继续发展下去,电气产品已经普及到各个行业,对于其绝缘材料的需求也越来越高,特别是现在的绝缘材料大多用于腐蚀性比较强的地方,其耐腐蚀能力会直接影响到安全性。虽然目前市面上的绝缘材料品种很多,但应用于电气产品的耐腐蚀的绝缘材料依然很少,性能也不佳,这直接限制了电气行业的发展。且现有的电气绝缘材料的改性剂一般采用有毒的化学物质,原料成本高,制备过程中存在很大的安全隐患,不够环保。
目前在全国公知的电气设备中,其设备的主绝缘材料多为空气、SF6气体、绝缘油、环氧树脂等材料。绝缘方式多采用两种或两种以上绝缘材料的复合绝缘方式,绝缘性能各有优劣。如空气绝缘体积大、绝缘性能差、极易受户外环境影响造成设备绝缘击穿;SF6气体绝缘不能应用于高原、极寒地区,SF6气体泄漏后绝缘下降易造成设备爆炸,而且SF6属于温室气体,不环保,不易回收;环氧树脂绝缘缩减了体积,但因热固化,易造成带电体损坏或绝缘层开裂,而且不环保,不能回收,带电体需加缓冲层使得局放较大,易造成运行绝缘事故。找到一种绝缘性能高、环保可回收、工艺易控制的新型绝缘材料,是提升中压电气设备性能的必经之路。
发明内容
本发明的目的是提供一种电气设备用绝缘材料的制备方法,本发明方法简单、制备流程短,制备的绝缘材料具有介电性能好、耐高电压、阻燃性能好、常温固化、耐高低温、耐紫外线及臭氧、耐老化和硅橡胶性能稳定的特点,其主要采用废旧橡胶材料,变废为宝,具有一定的环保意义。
本发明提供了如下的技术方案:
一种电气设备用绝缘材料的制备方法,包括以下制备步骤:
a、将废弃橡胶、环氧树脂和硅橡胶混合导入密炼机中密炼至熔融状态,密炼机中的温度为460-580℃,再依次加入阻燃剂、纳米二氧化硅和炭黑,将温度降低至180-240℃,得到混合物一;
b、将加工辅料、聚酰亚胺、海藻酸钠、木质素和抗氧化剂混合置于混料机中,在90-110℃下加热并进行超声搅拌,时间为1-2h,得到混合物二;
c、向混合物二中加入硅油、偶联剂,置于搅拌器中搅拌30-40min,再置于真空环境下脱泡处理10-15min,得到混合物三;
d、将混合物一、混合物三、有机锡和固化剂混合均匀后导入单螺杆中挤出,再导入脱水机中脱水15-25min,再置于密封容器中,静置12-24h,等待表面固化后,再进行塑型,即可得到成品。
优选的,所述步骤a的阻燃剂为氢氧化铝、十溴二苯醚和三氧化二锑中的任一种或几种的混合。
优选的,所述步骤b的加工辅料的制备方法为:将废旧塑料、硅酸钙粉、稻壳、秸秆、石膏粉和花生壳混合至于球磨机中球磨1-2h,再置于搅拌机中,并加入引发剂进行高速搅拌5-10min,再导入双螺杆机中,挤出成型的温度为160-180℃,挤出后置于80-90℃下干燥1-2h,即可得到加工辅料。
优选的,所述引发剂为羟基环已基苯基甲酮、过硫酸铵和过硫酸钾、偶氮二异丁腈和偶氮二异庚腈中的任一种或多种的混合。
优选的,所述步骤b的抗氧化剂为三(2,4-二叔丁基苯基)亚磷酸酯、β-(3,5-二叔丁基-4-羟基苯基)丙酸正十八碳醇酯和四[β-(3,5-二叔丁基-4-羟基苯基)丙酸]季戊四醇酯中的任一种或多种的混合。
优选的,所述步骤c的硅油为二甲基硅油、203硅油和羟基硅油中的任一种或多种的混合。
优选的,所述步骤c的偶联剂为钛酸酯、氨基硅烷偶联剂 KH-550或环氧基硅烷偶联剂 KH-560。
优选的,所述步骤d的有机锡为辛酸亚锡、二月桂酸二丁基锡和钛络合物中的任一种或几种的混合。
本发明的有益效果是:
本发明方法简单、制备流程短,制备的绝缘材料具有介电性能好、耐高电压、阻燃性能好、常温固化、耐高低温、耐紫外线及臭氧、耐老化和硅橡胶性能稳定的特点,其主要采用废旧橡胶材料,变废为宝,还具有一定的环保意义,因此本发明适合工业化大规模推广使用。
本发明能够在电气设备领域广泛应用,可使电气设备在各种恶劣环境下应用得到很大的提高,为电气设备行业的发展做出了积极贡献。
本发明制备的绝缘材料提高了耐热变形性,改善了高温下的力学性能,改进了耐环境应力龟裂与耐热老化性能,增强了耐化学稳定性和耐溶剂性,减少了冷流性,绝缘电阻高,基本上不随温度的改变而改变,基本保持了原来的电气性能。
具体实施方式
实施例1
一种电气设备用绝缘材料的制备方法,包括以下制备步骤:
a、将废弃橡胶、环氧树脂和硅橡胶混合导入密炼机中密炼至熔融状态,密炼机中的温度为460℃,再依次加入阻燃剂、纳米二氧化硅和炭黑,将温度降低至240℃,得到混合物一;
b、将加工辅料、聚酰亚胺、海藻酸钠、木质素和抗氧化剂混合置于混料机中,在90℃下加热并进行超声搅拌,时间为2h,得到混合物二;
c、向混合物二中加入硅油、偶联剂,置于搅拌器中搅拌30min,再置于真空环境下脱泡处理15min,得到混合物三;
d、将混合物一、混合物三、有机锡和固化剂混合均匀后导入单螺杆中挤出,再导入脱水机中脱水15min,再置于密封容器中,静置24h,等待表面固化后,再进行塑型,即可得到成品。
步骤a的阻燃剂为氢氧化铝、十溴二苯醚和三氧化二锑的混合。
步骤b的加工辅料的制备方法为:将废旧塑料、硅酸钙粉、稻壳、秸秆、石膏粉和花生壳混合至于球磨机中球磨1h,再置于搅拌机中,并加入引发剂进行高速搅拌10min,再导入双螺杆机中,挤出成型的温度为180℃,挤出后置于80℃下干燥1h,即可得到加工辅料。
引发剂为羟基环已基苯基甲酮、过硫酸铵和过硫酸钾、偶氮二异丁腈和偶氮二异庚腈的混合。
步骤b的抗氧化剂为β-(3,5-二叔丁基-4-羟基苯基)丙酸正十八碳醇酯和四[β-(3,5-二叔丁基-4-羟基苯基)丙酸]季戊四醇酯的混合。
步骤c的硅油为二甲基硅油、203硅油和羟基硅油的混合。
步骤c的偶联剂为氨基硅烷偶联剂 KH-550。
步骤d的有机锡为二月桂酸二丁基锡和钛络合物的混合。
实施例2
一种电气设备用绝缘材料的制备方法,包括以下制备步骤:
a、将废弃橡胶、环氧树脂和硅橡胶混合导入密炼机中密炼至熔融状态,密炼机中的温度为580℃,再依次加入阻燃剂、纳米二氧化硅和炭黑,将温度降低至240℃,得到混合物一;
b、将加工辅料、聚酰亚胺、海藻酸钠、木质素和抗氧化剂混合置于混料机中,在110℃下加热并进行超声搅拌,时间为2h,得到混合物二;
c、向混合物二中加入硅油、偶联剂,置于搅拌器中搅拌40min,再置于真空环境下脱泡处理15min,得到混合物三;
d、将混合物一、混合物三、有机锡和固化剂混合均匀后导入单螺杆中挤出,再导入脱水机中脱水25min,再置于密封容器中,静置24h,等待表面固化后,再进行塑型,即可得到成品。
步骤a的阻燃剂为氢氧化铝、十溴二苯醚和三氧化二锑的混合。
步骤b的加工辅料的制备方法为:将废旧塑料、硅酸钙粉、稻壳、秸秆、石膏粉和花生壳混合至于球磨机中球磨2h,再置于搅拌机中,并加入引发剂进行高速搅拌10min,再导入双螺杆机中,挤出成型的温度为180℃,挤出后置于90℃下干燥2h,即可得到加工辅料。
引发剂为羟基环已基苯基甲酮、过硫酸铵和过硫酸钾、偶氮二异丁腈和偶氮二异庚腈的混合。
步骤b的抗氧化剂为三(2,4-二叔丁基苯基)亚磷酸酯和四[β-(3,5-二叔丁基-4-羟基苯基)丙酸]季戊四醇酯的混合。
步骤c的硅油为二甲基硅油、203硅油和羟基硅油的混合。
步骤c的偶联剂为钛酸酯。
步骤d的有机锡为辛酸亚锡和钛络合物的混合。
实施例3
一种电气设备用绝缘材料的制备方法,包括以下制备步骤:
a、将废弃橡胶、环氧树脂和硅橡胶混合导入密炼机中密炼至熔融状态,密炼机中的温度为460℃,再依次加入阻燃剂、纳米二氧化硅和炭黑,将温度降低至180℃,得到混合物一;
b、将加工辅料、聚酰亚胺、海藻酸钠、木质素和抗氧化剂混合置于混料机中,在90℃下加热并进行超声搅拌,时间为1h,得到混合物二;
c、向混合物二中加入硅油、偶联剂,置于搅拌器中搅拌30-40min,再置于真空环境下脱泡处理10min,得到混合物三;
d、将混合物一、混合物三、有机锡和固化剂混合均匀后导入单螺杆中挤出,再导入脱水机中脱水15min,再置于密封容器中,静置12h,等待表面固化后,再进行塑型,即可得到成品。
步骤a的阻燃剂为氢氧化铝、十溴二苯醚和三氧化二锑的混合。
步骤b的加工辅料的制备方法为:将废旧塑料、硅酸钙粉、稻壳、秸秆、石膏粉和花生壳混合至于球磨机中球磨1h,再置于搅拌机中,并加入引发剂进行高速搅拌5min,再导入双螺杆机中,挤出成型的温度为160℃,挤出后置于90℃下干燥1h,即可得到加工辅料。
引发剂为羟基环已基苯基甲酮、过硫酸铵和过硫酸钾、偶氮二异丁腈和偶氮二异庚腈的混合。
步骤b的抗氧化剂为三(2,4-二叔丁基苯基)亚磷酸酯、β-(3,5-二叔丁基-4-羟基苯基)丙酸正十八碳醇酯和四[β-(3,5-二叔丁基-4-羟基苯基)丙酸]季戊四醇酯的混合。
步骤c的硅油为二甲基硅油、203硅油和羟基硅油的混合。
步骤c的偶联剂为环氧基硅烷偶联剂 KH-560。
步骤d的有机锡为辛酸亚锡、二月桂酸二丁基锡和钛络合物的混合。
检测以上实施例制备的绝缘材料的性能,得到如下数据:
表一:
项目 拉伸强度(MPa) 体积电阻率(20℃,Ω·m) 介电强度(20℃,MV/m) 断裂伸长率(%) 抗张强度(MPa)
实施例1 12 8.5×1014 35 680 25
实施例2 15 7.9×1014 37 650 24
实施例3 15 8.3×1014 38 660 24
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (8)

1.一种电气设备用绝缘材料的制备方法,其特征在于,包括以下制备步骤:
a、将废弃橡胶、环氧树脂和硅橡胶混合导入密炼机中密炼至熔融状态,密炼机中的温度为460-580℃,再依次加入阻燃剂、纳米二氧化硅和炭黑,将温度降低至180-240℃,得到混合物一;
b、将加工辅料、聚酰亚胺、海藻酸钠、木质素和抗氧化剂混合置于混料机中,在90-110℃下加热并进行超声搅拌,时间为1-2h,得到混合物二;
c、向混合物二中加入硅油、偶联剂,置于搅拌器中搅拌30-40min,再置于真空环境下脱泡处理10-15min,得到混合物三;
d、将混合物一、混合物三、有机锡和固化剂混合均匀后导入单螺杆中挤出,再导入脱水机中脱水15-25min,再置于密封容器中,静置12-24h,等待表面固化后,再进行塑型,即可得到成品。
2.根据权利要求1所述的一种电气设备用绝缘材料的制备方法,其特征在于,所述步骤a的阻燃剂为氢氧化铝、十溴二苯醚和三氧化二锑中的任一种或几种的混合。
3.根据权利要求1所述的一种电气设备用绝缘材料的制备方法,其特征在于,所述步骤b的加工辅料的制备方法为:将废旧塑料、硅酸钙粉、稻壳、秸秆、石膏粉和花生壳混合至于球磨机中球磨1-2h,再置于搅拌机中,并加入引发剂进行高速搅拌5-10min,再导入双螺杆机中,挤出成型的温度为160-180℃,挤出后置于80-90℃下干燥1-2h,即可得到加工辅料。
4.根据权利要求3所述的一种电气设备用绝缘材料的制备方法,其特征在于,所述引发剂为羟基环已基苯基甲酮、过硫酸铵和过硫酸钾、偶氮二异丁腈和偶氮二异庚腈中的任一种或多种的混合。
5.根据权利要求1所述的一种电气设备用绝缘材料的制备方法,其特征在于,所述步骤b的抗氧化剂为三(2,4-二叔丁基苯基)亚磷酸酯、β-(3,5-二叔丁基-4-羟基苯基)丙酸正十八碳醇酯和四[β-(3,5-二叔丁基-4-羟基苯基)丙酸]季戊四醇酯中的任一种或多种的混合。
6.根据权利要求1所述的一种电气设备用绝缘材料的制备方法,其特征在于,所述步骤c的硅油为二甲基硅油、203硅油和羟基硅油中的任一种或多种的混合。
7.根据权利要求1所述的一种电气设备用绝缘材料的制备方法,其特征在于,所述步骤c的偶联剂为钛酸酯、氨基硅烷偶联剂 KH-550或环氧基硅烷偶联剂 KH-560。
8.根据权利要求1所述的一种电气设备用绝缘材料的制备方法,其特征在于,所述步骤d的有机锡为辛酸亚锡、二月桂酸二丁基锡和钛络合物中的任一种或几种的混合。
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