CN108034248A - 一种负温度系数的pps热敏电阻的制备方法 - Google Patents
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Abstract
本发明公开了一种负温度系数的PPS热敏电阻的制备方法,本发明所得产品制备的NTC热敏电阻元件的性能稳定高、可靠性高,所述热敏电阻本发明所得产品具有聚苯硫醚(PPS)复合材料,导电率较高,在高温环境和潮湿环境中,性能温度。
Description
技术领域
本发明涉及电阻材料制造领域,具体涉及一种负温度系数的PPS热敏电阻的制备方法。
背景技术
热敏电阻器是一类对温度敏感、在不同的温度下表现出不同的电阻值的敏感元件,按照温度系数不同分为正温度系数热敏电阻器(PTC)和负温度系数热敏电阻器(NTC)。
其中负温度系数热敏电阻器(NTC)是一类电阻值随温度增大而减小的半导体材料,具有测温、控温、温度补偿、抑制浪涌等作用。常温NTC热敏电阻器中,主要采用过渡金属锰、镍、钴、铁、铜的氧化物制成的尖晶石结构NTC热敏电阻元件,它们得到了广泛的研究与应用。
在采用过渡金属锰、镍、钴、铁、铜的氧化物制成的尖晶石结构NTC热敏电阻材料中,因为这些过渡金属氧化物的挥发温度较低,这类NTC热敏电阻元件的制备烧结过程中容易产生原材料成分的挥发,使得产品的最终成分、产品的一致性和生产不同批次之间的重复性难于控制。
聚苯硫醚(PPS)是美国Phillips Petroleum石油公司于1968年开发成功的一种性能优越的新型特种工程塑料。近10年来,PPS已成为工程塑料中发展最快的品种,被誉为“用于喷气时代的新型塑料”。PPS具有优异的耐热性、耐腐蚀性、阻燃性、刚性和电性能,以及良好的自润滑效应和一定的承载能力,其最大的优点在于:可以与不同填料或不同基体组合,在一定加工条件下,通过特殊处理方法,来满足特定的使用要求。
发明内容
本发明提供一种负温度系数的PPS热敏电阻的制备方法,本发明所得产品制备的NTC热敏电阻元件的性能稳定高、可靠性高,所述热敏电阻本发明所得产品具有聚苯硫醚(PPS)复合材料,导电率较高,在高温环境和潮湿环境中,性能温度。
为了实现上述目的,本发明提供了一种负温度系数的PPS热敏电阻的制备方法,该方法包括如下步骤:
(1)制备镍基电阻材料
按分子式Ni1-xZnxO1-yCly进行配料,其中x=0.01-0.03、y=0.005-0.01,初始原材料选自碱式碳酸镍、氯化铵和醋酸锌;
将初始原料按Ni1-xZnxO1-yCly配料,称取碱式碳酸镍、氯化铵和醋酸锌;
将上称取的原材料分别溶解,碱式碳酸镍溶于稀硝酸,然后滴加氨水调节pH值至8-9;氯化铵和醋酸锌分别溶于去离子水;
将的溶解后的三种溶液混合在一起,并利用磁力搅拌加热器搅拌混合均匀、加热干燥;
将上一步骤制得的粉末进行煅烧,温度为880-950℃,保温4-5小时,得到镍基电阻材料;
(2)制备PPS混合树脂
称取8-15重量份聚乙烯加入到带有温度计和回流装置的三口烧瓶中,将烧瓶置于油浴锅中,控制温度在85-95℃,向烧瓶中加入5-10重量份马来酸酐,搅拌1-2h,再依次加入0.3-0.5重量份过氧化二异苯丙、0.2-0.4重量份二月桂二丁基锡,搅拌反应3-4h,得到马来酸酐接枝聚乙烯,备用;
称取10-15重量份聚苯硫醚加入到带有温度计和回流装置的三口烧瓶中,将三口烧瓶置于数显恒温电热套中,控制温度在280-300℃,搅拌2-3h,再依次加入6-8重量份上述马来酸酐接枝聚乙烯,搅拌10-20min,再加入0.3-0.5重量份过硫酸钾,搅拌反应3-4h,得到PPS混合树脂;
(3)按照如下重量份配料:
上述PPS混合树脂 45-49份
上述镍基电阻材料 15-22份;
(4)按上述配料混合均匀;然后挤出造粒,得到粒料;将所述粒料进行热压复合即可得到负温度系数的PPS热敏电阻。
具体实施方式
实施例一
按分子式Ni0.99Zn0.01O0.995Cl0.005进行配料,初始原材料选自碱式碳酸镍、氯化铵和醋酸锌。
将上称取的原材料分别溶解,碱式碳酸镍溶于稀硝酸,然后滴加氨水调节pH值至8-9;氯化铵和醋酸锌分别溶于去离子水;将的溶解后的三种溶液混合在一起,并利用磁力搅拌加热器搅拌混合均匀、加热干燥;将上一步骤制得的粉末进行煅烧,温度为880℃,保温4小时,得到镍基电阻材料。
称取8重量份聚乙烯加入到带有温度计和回流装置的三口烧瓶中,将烧瓶置于油浴锅中,控制温度在85℃,向烧瓶中加入5重量份马来酸酐,搅拌1h,再依次加入0.3重量份过氧化二异苯丙、0.2重量份二月桂二丁基锡,搅拌反应3h,得到马来酸酐接枝聚乙烯,备用。
称取10重量份聚苯硫醚加入到带有温度计和回流装置的三口烧瓶中,将三口烧瓶置于数显恒温电热套中,控制温度在280℃,搅拌2h,再依次加入6-8重量份上述马来酸酐接枝聚乙烯,搅拌10min,再加入0.3重量份过硫酸钾,搅拌反应3h,得到PPS混合树脂。
按照如下重量份配料:
上述PPS混合树脂 45份
上述镍基电阻材料 15份。
按上述配料混合均匀;然后挤出造粒,得到粒料;将所述粒料进行热压复合即可得到负温度系数的PPS热敏电阻。
实施例二
按分子式Ni0.97Zn0.03O0.99Cl0.01进行配料,初始原材料选自碱式碳酸镍、氯化铵和醋酸锌;将初始原料按Ni0.97Zn0.03O0.99Cl0.01配料。
将上称取的原材料分别溶解,碱式碳酸镍溶于稀硝酸,然后滴加氨水调节pH值至8-9;氯化铵和醋酸锌分别溶于去离子水;将的溶解后的三种溶液混合在一起,并利用磁力搅拌加热器搅拌混合均匀、加热干燥;将上一步骤制得的粉末进行煅烧,温度为950℃,保温5小时,得到镍基电阻材料。
称取15重量份聚乙烯加入到带有温度计和回流装置的三口烧瓶中,将烧瓶置于油浴锅中,控制温度在95℃,向烧瓶中加入10重量份马来酸酐,搅拌2h,再依次加入0.5重量份过氧化二异苯丙、0.4重量份二月桂二丁基锡,搅拌反应4h,得到马来酸酐接枝聚乙烯,备用。
称取15重量份聚苯硫醚加入到带有温度计和回流装置的三口烧瓶中,将三口烧瓶置于数显恒温电热套中,控制温度在300℃,搅拌3h,再依次加入8重量份上述马来酸酐接枝聚乙烯,搅拌20min,再加入0.5重量份过硫酸钾,搅拌反应4h,得到PPS混合树脂。
按照如下重量份配料:
上述PPS混合树脂 49份
上述镍基电阻材料 22份。
按上述配料混合均匀;然后挤出造粒,得到粒料;将所述粒料进行热压复合即可得到负温度系数的PPS热敏电阻。
Claims (1)
1.一种负温度系数的PPS热敏电阻的制备方法,该方法包括如下步骤:
(1)制备镍基电阻材料
按分子式Ni1-xZnxO1-yCly进行配料,其中x=0.01-0.03、y=0.005-0.01,初始原材料选自碱式碳酸镍、氯化铵和醋酸锌;
将初始原料按Ni1-xZnxO1-yCly配料,称取碱式碳酸镍、氯化铵和醋酸锌;
将上称取的原材料分别溶解,碱式碳酸镍溶于稀硝酸,然后滴加氨水调节pH值至8-9;氯化铵和醋酸锌分别溶于去离子水;
将的溶解后的三种溶液混合在一起,并利用磁力搅拌加热器搅拌混合均匀、加热干燥;
将上一步骤制得的粉末进行煅烧,温度为880-950℃,保温4-5小时,得到镍基电阻材料;
(2)制备PPS混合树脂
称取8-15重量份聚乙烯加入到带有温度计和回流装置的三口烧瓶中,将烧瓶置于油浴锅中,控制温度在85-95℃,向烧瓶中加入5-10重量份马来酸酐,搅拌1-2h,再依次加入0.3-0.5重量份过氧化二异苯丙、0.2-0.4重量份二月桂二丁基锡,搅拌反应3-4h,得到马来酸酐接枝聚乙烯,备用;
称取10-15重量份聚苯硫醚加入到带有温度计和回流装置的三口烧瓶中,将三口烧瓶置于数显恒温电热套中,控制温度在280-300℃,搅拌2-3h,再依次加入6-8重量份上述马来酸酐接枝聚乙烯,搅拌10-20min,再加入0.3-0.5重量份过硫酸钾,搅拌反应3-4h,得到PPS混合树脂;
(3)按照如下重量份配料:
上述PPS混合树脂 45-49份
上述镍基电阻材料 15-22份;
(4)按上述配料混合均匀;然后挤出造粒,得到粒料;将所述粒料进行热压复合即可得到负温度系数的PPS热敏电阻。
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CN108863160A (zh) * | 2018-07-06 | 2018-11-23 | 句容市博远电子有限公司 | 一种ntc镍基热敏电阻材料的制备方法 |
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CN104252935A (zh) * | 2013-06-25 | 2014-12-31 | 比亚迪股份有限公司 | 热敏电阻及其制备方法 |
CN105967656A (zh) * | 2016-05-06 | 2016-09-28 | 中南大学 | 一种基于氧化镍的新型ntc热敏电阻材料 |
CN106147231A (zh) * | 2016-07-13 | 2016-11-23 | 张静 | 一种耐潮湿稳定电阻率聚苯硫醚复合材料的制备方法 |
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CN104252935A (zh) * | 2013-06-25 | 2014-12-31 | 比亚迪股份有限公司 | 热敏电阻及其制备方法 |
CN105967656A (zh) * | 2016-05-06 | 2016-09-28 | 中南大学 | 一种基于氧化镍的新型ntc热敏电阻材料 |
CN106147231A (zh) * | 2016-07-13 | 2016-11-23 | 张静 | 一种耐潮湿稳定电阻率聚苯硫醚复合材料的制备方法 |
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CN108863160A (zh) * | 2018-07-06 | 2018-11-23 | 句容市博远电子有限公司 | 一种ntc镍基热敏电阻材料的制备方法 |
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