CN110950645A - 一种高压输电线用的电瓷绝缘子制备方法 - Google Patents
一种高压输电线用的电瓷绝缘子制备方法 Download PDFInfo
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Abstract
本发明公开了一种高压输电线用的电瓷绝缘子制备方法,包括以下步骤:步骤一,陶瓷基体的制备:将陶瓷先采用50‑100W功率的等离子体照射20‑30min,然后再采用300‑500W的等离子体继续照射30‑40min。本发明陶瓷基体制备中采用陶瓷先等离子处理,使陶瓷结构易被球磨剂改性处理,镍纹石粉、六硼化钙、水滑石粉通过球磨剂的形式与陶瓷混合,通过不断的研磨从而使陶瓷与镍纹石粉、六硼化钙、水滑石粉能够更好的相容,形成一个完整的基体,从而提高材料的强度性能,同时球磨剂中的镍纹石粉等被PVDF乳液改性后,提高了原料的耐电压等电气性能。
Description
技术领域
本发明涉及电瓷绝缘子技术领域,具体涉及一种高压输电线用的电瓷绝缘子制备方法。
背景技术
高压输电是通过发电厂用变压器将发电机输出的电压升压后传输的一种方式。之所以采用这种方式输电是因为在同输电功率的情况下,电压越高电流就越小,这样高压输电就能减少输电时的电流从而降低因电流产生的热损耗和降低远距离输电的材料成本。而绝缘子是安装在不同电位的导体之间或导体与地电位构件之间的器件,能够耐受电压和机械应力作用。它是一种特殊的绝缘控件,能够在架空输电线路中起到重要作用。早年间绝缘子多用于电线杆,慢慢发展于高型高压电线连接塔的一端挂了很多盘状的绝缘体,它是为了增加爬电距离的,通常由玻璃或陶瓷制成,就叫绝缘子。
电瓷绝缘子由于应用在高压输电线上,因而需要具备高的耐电压、强度等性能,现有材料采用的原料多为常规原料,且制备工艺较为现有,因而仍需进一步研发处理。
中国专利文献CN105218066B公开了一种高压输电线路用悬式绝缘子的制备方法,制备步骤包括:首先按照如下重量份称取制备悬式绝缘子的各种原料:组分A600-1000份,组分B500-900份,组分C2000-3000份,矾土500-900份,组分D500-850份,组分E600-1000份,组分F800-1300份,组分G200-500份;然后球磨、加水、榨泥、粗练、阴干、烘干、上釉;然后将上釉后的悬式绝缘子置于梭式窑烧窑中进行烧结;烧结后的绝缘子进行刷沥青晾干即得到本发明的绝缘子;该绝缘子采用的原料较为常规,制备的绝缘子电气、强度性能仍具有较大的改善空间。
发明内容
本发明的目的在于提供一种高压输电线用的电瓷绝缘子制备方法,以解决上述背景技术中提出的问题。
为实现上述目的,本发明提供如下技术方案:
一种高压输电线用的电瓷绝缘子制备方法,包括以下步骤:
步骤一,陶瓷基体的制备:将陶瓷先采用50-100W功率的等离子体照射20-30min,然后再采用300-500W的等离子体继续照射30-40min,照射结束,送入球磨机中进行球磨,先采用120-150r/min的转速球磨20-30min,然后再加入球磨剂继续以500-900r/min的转速球磨1-2h,球磨结束,将球磨料送入到马沸炉中进行煅烧,煅烧温度为500-1000℃,煅烧20-30min,然后冷却,得到陶瓷基体;
步骤二,铈硅石粉的改性:将铈硅石粉加入到稀盐酸中酸化10-20min,酸化溶液pH为4.5-5.5,然后取出煅烧10-20min,煅烧温度为200-280℃,随后冷却至室温,然后再送入环已醇溶液中超声分散,再离心、洗涤、干燥,得到铈硅石粉;
步骤三,金属复合剂的制备:将20-30份Ni、15-25份Ce、5-10份Cr2O3、2-8份Ag3PO4加入到氧化铝坩埚中进行烧结、研磨,得到金属复合剂;
步骤四,电瓷绝缘子的制备:将步骤一制备的陶瓷基体、步骤二改性的铈硅石粉和步骤三的金属复合剂送入到高压反应釜中,加入去离子水,反应20-30min,然后再煅烧1-2h,煅烧温度为1000-1500℃,即得本发明的电瓷绝缘子。
优选地,所述球磨剂的制备方法为:将镍纹石粉、六硼化钙按照重量比1:2加入到反应釜中,随后再加入丙酮溶剂,然后再继续加入PVDF乳液、硅烷偶联剂KH560,以120-150℃的温度搅拌反应20-30min,搅拌转速为300r/min,得到球磨剂。
优选地,所述球磨剂中还添加有水滑石粉,水滑石粉总量为镍纹石粉的40-50%。
优选地,所述球磨剂中还添加有水滑石粉,水滑石粉总量为镍纹石粉的45%。
优选地,所述步骤二中超声分散的功率为280-320KHz,超声时间为20-30min。
优选地,所述步骤二中超声分散的功率为300KHz,超声时间为25min。
优选地,所述步骤三中烧结、研磨的具体条件为:烧结温度为900-1100℃,烧结时间为20-30min,然后冷却至室温,再进行研磨,研磨20-30min,研磨转速为500-1000r/min,即可。
优选地,所述烧结温度为1000℃,烧结时间为25min;研磨25min,研磨转速为750r/min。
优选地,所述高压反应釜的压力为25-35MPa,温度为100-120℃。
优选地,高压反应釜的压力为30MPa,温度为110℃。
与现有技术相比,本发明具有如下的有益效果:
(1)本发明陶瓷基体制备中采用陶瓷先等离子处理,使陶瓷结构易被球磨剂改性处理,镍纹石粉、六硼化钙、水滑石粉通过球磨剂的形式与陶瓷混合,通过不断的研磨从而使陶瓷与镍纹石粉、六硼化钙、水滑石粉能够更好的相容,形成一个完整的基体,从而提高材料的强度性能,同时球磨剂中的镍纹石粉等被PVDF乳液改性后,提高了原料的耐电压等电气性能。
(2)加入的铈硅石粉经过改性后作为中间介质,提高原料间的相容性,进一步提高材料的强度等性能,加入的金属复合剂在原料煅烧过程中,可细化陶瓷微粒,从而使煅烧形成的电瓷绝缘子紧密度更强,进而制备的材料性能更好。
(3)本发明实施例3的拉伸破坏负荷为184KN,耐受电压为578Kv,机械抗拉强度为212MPa,对比例2中的拉伸破坏负荷为151KN,耐受电压为535Kv,机械抗拉强度为185MPa,可知本发明耐电压和强度性能均具有显著改善。
具体实施方式
下面结合具体实施例,对本发明实施例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。
实施例1:
本实施例的一种高压输电线用的电瓷绝缘子制备方法,包括以下步骤:
步骤一,陶瓷基体的制备:将陶瓷先采用50W功率的等离子体照射20min,然后再采用300W的等离子体继续照射30min,照射结束,送入球磨机中进行球磨,先采用120r/min的转速球磨20min,然后再加入球磨剂继续以500r/min的转速球磨1h,球磨结束,将球磨料送入到马沸炉中进行煅烧,煅烧温度为500℃,煅烧20min,然后冷却,得到陶瓷基体;
步骤二,铈硅石粉的改性:将铈硅石粉加入到稀盐酸中酸化10min,酸化溶液pH为4.5,然后取出煅烧10min,煅烧温度为200℃,随后冷却至室温,然后再送入环已醇溶液中超声分散,再离心、洗涤、干燥,得到铈硅石粉;
步骤三,金属复合剂的制备:将20份Ni、15份Ce、5份Cr2O3、2份Ag3PO4加入到氧化铝坩埚中进行烧结、研磨,得到金属复合剂;
步骤四,电瓷绝缘子的制备:将步骤一制备的陶瓷基体、步骤二改性的铈硅石粉和步骤三的金属复合剂送入到高压反应釜中,加入去离子水,反应20min,然后再煅烧1h,煅烧温度为1000℃,即得本发明的电瓷绝缘子。
本实施例的球磨剂的制备方法为:将镍纹石粉、六硼化钙按照重量比1:2加入到反应釜中,随后再加入丙酮溶剂,然后再继续加入PVDF乳液、硅烷偶联剂KH560,以1200℃的温度搅拌反应20min,搅拌转速为300r/min,得到球磨剂。
本实施例的球磨剂中还添加有水滑石粉,水滑石粉总量为镍纹石粉的40%。
本实施例的步骤二中超声分散的功率为280KHz,超声时间为20min。
本实施例的步骤三中烧结、研磨的具体条件为:烧结温度为900℃,烧结时间为20min,然后冷却至室温,再进行研磨,研磨20min,研磨转速为500r/min,即可。
本实施例的高压反应釜的压力为25MPa,温度为100℃。
实施例2:
本实施例的一种高压输电线用的电瓷绝缘子制备方法,包括以下步骤:
步骤一,陶瓷基体的制备:将陶瓷先采用100W功率的等离子体照射30min,然后再采用500W的等离子体继续照射40min,照射结束,送入球磨机中进行球磨,先采用150r/min的转速球磨30min,然后再加入球磨剂继续以900r/min的转速球磨2h,球磨结束,将球磨料送入到马沸炉中进行煅烧,煅烧温度为1000℃,煅烧30min,然后冷却,得到陶瓷基体;
步骤二,铈硅石粉的改性:将铈硅石粉加入到稀盐酸中酸化20min,酸化溶液pH为5.5,然后取出煅烧20min,煅烧温度为280℃,随后冷却至室温,然后再送入环已醇溶液中超声分散,再离心、洗涤、干燥,得到铈硅石粉;
步骤三,金属复合剂的制备:将30份Ni、25份Ce、10份Cr2O3、8份Ag3PO4加入到氧化铝坩埚中进行烧结、研磨,得到金属复合剂;
步骤四,电瓷绝缘子的制备:将步骤一制备的陶瓷基体、步骤二改性的铈硅石粉和步骤三的金属复合剂送入到高压反应釜中,加入去离子水,反应30min,然后再煅烧2h,煅烧温度为1500℃,即得本发明的电瓷绝缘子。
本实施例的球磨剂的制备方法为:将镍纹石粉、六硼化钙按照重量比1:2加入到反应釜中,随后再加入丙酮溶剂,然后再继续加入PVDF乳液、硅烷偶联剂KH560,以150℃的温度搅拌反应30min,搅拌转速为300r/min,得到球磨剂。
本实施例的球磨剂中还添加有水滑石粉,水滑石粉总量为镍纹石粉的50%。
本实施例的步骤二中超声分散的功率为320KHz,超声时间为30min。
本实施例的步骤三中烧结、研磨的具体条件为:烧结温度为1100℃,烧结时间为30min,然后冷却至室温,再进行研磨,研磨30min,研磨转速为1000r/min,即可。
本实施例的高压反应釜的压力为35MPa,温度为120℃。
实施例3:
本实施例的一种高压输电线用的电瓷绝缘子制备方法,包括以下步骤:
步骤一,陶瓷基体的制备:将陶瓷先采用75W功率的等离子体照射25min,然后再采用400W的等离子体继续照射35min,照射结束,送入球磨机中进行球磨,先采用135r/min的转速球磨25min,然后再加入球磨剂继续以700r/min的转速球磨1.5h,球磨结束,将球磨料送入到马沸炉中进行煅烧,煅烧温度为750℃,煅烧25min,然后冷却,得到陶瓷基体;
步骤二,铈硅石粉的改性:将铈硅石粉加入到稀盐酸中酸化15min,酸化溶液pH为5.0,然后取出煅烧15min,煅烧温度为240℃,随后冷却至室温,然后再送入环已醇溶液中超声分散,再离心、洗涤、干燥,得到铈硅石粉;
步骤三,金属复合剂的制备:将25份Ni、20份Ce、7.5份Cr2O3、5份Ag3PO4加入到氧化铝坩埚中进行烧结、研磨,得到金属复合剂;
步骤四,电瓷绝缘子的制备:将步骤一制备的陶瓷基体、步骤二改性的铈硅石粉和步骤三的金属复合剂送入到高压反应釜中,加入去离子水,反应25min,然后再煅烧1.5h,煅烧温度为1250℃,即得本发明的电瓷绝缘子。
本实施例的球磨剂的制备方法为:将镍纹石粉、六硼化钙按照重量比1:2加入到反应釜中,随后再加入丙酮溶剂,然后再继续加入PVDF乳液、硅烷偶联剂KH560,以135℃的温度搅拌反应25min,搅拌转速为300r/min,得到球磨剂。
本实施例球磨剂中还添加有水滑石粉,水滑石粉总量为镍纹石粉的45%。
本实施例的步骤二中超声分散的功率为300KHz,超声时间为25min。
本实施例的步骤三中烧结、研磨的具体条件为:烧结温度为1000℃,烧结时间为25min,然后冷却至室温,再进行研磨,研磨25min,研磨转速为750r/min,即可。
本实施例的高压反应釜的压力为30MPa,温度为110℃。
对比例1.
与实施例3的材料及制备工艺基本相同,唯有不同的是未添加金属复合剂。
对比例2.
与实施例3的材料及制备工艺基本相同,唯有不同的是采用中国专利文献CN105218066B公开了一种高压输电线路用悬式绝缘子的制备方法,制备步骤中实施例1原料及方法。
实施例1-3及对比例1-2性能测试结果如下
从实施例1-3及对比例1-2得出,本发明实施例3的拉伸破坏负荷为184KN,耐受电压为578Kv,机械抗拉强度为212MPa,对比例2中的拉伸破坏负荷为151KN,耐受电压为535Kv,机械抗拉强度为185MPa,可知本发明耐电压和强度性能均具有显著改善。
对于本领域技术人员而言,显然本发明不限于上述示范性实施例的细节,而且在不背离本发明的精神或基本特征的情况下,能够以其他的具体形式实现本发明。因此,无论从哪一点来看,均应将实施例看作是示范性的,而且是非限制性的,本发明的范围由所附权利要求而不是上述说明限定,因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。
此外,应当理解,虽然本说明书按照实施方式加以描述,但并非每个实施方式仅包含一个独立的技术方案,说明书的这种叙述方式仅仅是为清楚起见,本领域技术人员应当将说明书作为一个整体,各实施例中的技术方案也可以经适当组合,形成本领域技术人员可以理解的其他实施方式。
Claims (10)
1.一种高压输电线用的电瓷绝缘子制备方法,其特征在于,包括以下步骤:
步骤一,陶瓷基体的制备:将陶瓷先采用50-100W功率的等离子体照射20-30min,然后再采用300-500W的等离子体继续照射30-40min,照射结束,送入球磨机中进行球磨,先采用120-150r/min的转速球磨20-30min,然后再加入球磨剂继续以500-900r/min的转速球磨1-2h,球磨结束,将球磨料送入到马沸炉中进行煅烧,煅烧温度为500-1000℃,煅烧20-30min,然后冷却,得到陶瓷基体;
步骤二,铈硅石粉的改性:将铈硅石粉加入到稀盐酸中酸化10-20min,酸化溶液pH为4.5-5.5,然后取出煅烧10-20min,煅烧温度为200-280℃,随后冷却至室温,然后再送入环已醇溶液中超声分散,再离心、洗涤、干燥,得到铈硅石粉;
步骤三,金属复合剂的制备:将20-30份Ni、15-25份Ce、5-10份Cr2O3、2-8份Ag3PO4加入到氧化铝坩埚中进行烧结、研磨,得到金属复合剂;
步骤四,电瓷绝缘子的制备:将步骤一制备的陶瓷基体、步骤二改性的铈硅石粉和步骤三的金属复合剂送入到高压反应釜中,加入去离子水,反应20-30min,然后再煅烧1-2h,煅烧温度为1000-1500℃,即得本发明的电瓷绝缘子。
2.根据权利要求1所述的一种高压输电线用的电瓷绝缘子制备方法,其特征在于,所述球磨剂的制备方法为:将镍纹石粉、六硼化钙按照重量比1:2加入到反应釜中,随后再加入丙酮溶剂,然后再继续加入PVDF乳液、硅烷偶联剂KH560,以120-150℃的温度搅拌反应20-30min,搅拌转速为300r/min,得到球磨剂。
3.根据权利要求2所述的一种高压输电线用的电瓷绝缘子制备方法,其特征在于,所述球磨剂中还添加有水滑石粉,水滑石粉总量为镍纹石粉的40-50%。
4.根据权利要求3所述的一种高压输电线用的电瓷绝缘子制备方法,其特征在于,所述球磨剂中还添加有水滑石粉,水滑石粉总量为镍纹石粉的45%。
5.根据权利要求1所述的一种高压输电线用的电瓷绝缘子制备方法,其特征在于,所述步骤二中超声分散的功率为280-320KHz,超声时间为20-30min。
6.根据权利要求5所述的一种高压输电线用的电瓷绝缘子制备方法,其特征在于,所述步骤二中超声分散的功率为300KHz,超声时间为25min。
7.根据权利要求1所述的一种高压输电线用的电瓷绝缘子制备方法,其特征在于,所述步骤三中烧结、研磨的具体条件为:烧结温度为900-1100℃,烧结时间为20-30min,然后冷却至室温,再进行研磨,研磨20-30min,研磨转速为500-1000r/min,即可。
8.根据权利要求7所述的一种高压输电线用的电瓷绝缘子制备方法,其特征在于,所述烧结温度为1000℃,烧结时间为25min;研磨25min,研磨转速为750r/min。
9.根据权利要求1所述的一种高压输电线用的电瓷绝缘子制备方法,其特征在于,所述高压反应釜的压力为25-35MPa,温度为100-120℃。
10.根据权利要求9所述的一种高压输电线用的电瓷绝缘子制备方法,其特征在于,高压反应釜的压力为30MPa,温度为110℃。
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