CN103333388A - 一种茂金属聚乙烯为主料的ptc高分子导电材料及其制备方法 - Google Patents
一种茂金属聚乙烯为主料的ptc高分子导电材料及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种茂金属聚乙烯为主料的PTC高分子导电材料及其制备方法，其组成原料为：茂金属聚乙烯、有机硅树脂、邻苯二甲酸酐、纳米碳、改性竹炭粉、碳纤维、促进剂CZ、防老剂OD、抗氧剂1010、十溴二苯乙烷和月桂醇硫酸钠；本发明采用茂金属聚乙烯作为主料，并拌入有机硅树脂，价格低廉，同时添加了填料改性竹炭粉、碳纤维和纳米碳，使PTC高分子导电材料的弹性模量提高、最大值应力和断裂点应力增大，提高了PTC高分子材料抗拉伸性能，而且材料的电阻稳定、温度均匀，并延长材料的使用寿命。
Description
技术领域
本发明涉及到伴热电缆领域，具体涉及一种茂金属聚乙烯为主料的PTC高分子导电材料及其制备方法。
背景技术
电伴热带是一种新型高科技产品，两根导电芯之间分布着起加热作用的PTC高分子材料，其外部由高分子内护层、金属屏蔽网和高分子外护套构成，PTC高分子材料在现代电子电气领域已得到广泛应用；目前国内的电伴热带生产中由于加工条件和环境条件的限制，使产品的抗拉伸强度性能不高，同时产品的结晶行为不稳定、结晶不完善，并且PTC发热材料内部残留热应力，这都会使PTC发热材料的电阻不稳定、温度升降不均匀和减短材料的使用寿命。
发明内容
本发明的目的在于提供一种茂金属聚乙烯为主料的PTC高分子导电材料及其制备方法。
本发明采用如下技术方案：
茂金属聚乙烯为主料的PTC高分子导电材料，其组成原料的重量份为：茂金属聚乙烯70-80、有机硅树脂15-20、邻苯二甲酸酐25-30、纳米碳14-18、改性竹炭粉5.0-6.0、碳纤维3.5-4.5、促进剂CZ 1.8-2.5、防老剂OD 1.7-2.3、抗氧剂1010 1.0-1.5、十溴二苯乙烷4.5-6.0和月桂醇硫酸钠4.5-5.0。
茂金属聚乙烯为主料的PTC高分子导电材料，其组成原料的重量份为：茂金属聚乙烯75、有机硅树脂18、邻苯二甲酸酐28、纳米碳16、改性竹炭粉5.5、碳纤维4.0、促进剂CZ 2.2、防老剂OD 2.0、抗氧剂1010 1.2、十溴二苯乙烷5.5和月桂醇硫酸钠4.8。
茂金属聚乙烯为主料的PTC高分子导电材料的制备方法，包括以下步骤：
（1）改性竹炭粉的制备：
a：按组成原料的重量份称取竹炭粉8-12份、三聚磷酸钠1.0-2.0份、黄土4.0-5.5份、氟化锆8-10份、纳米陶土6.0-7.0份和硅酸钠1.0-2.5份；混合均匀，煅烧3-5小时，控制温度630-680℃，冷却待用；
b：在步骤（a）冷却后的混合料中加入3.0-4.0份氮化铝、3.0-4.0份乙烯基三(β-甲氧基乙氧基)硅烷和5.5-6.5份油酸丁酯；搅拌混合2-3h后得到；
（2）按所有原料的重量份称取各原料，加入到高速搅拌机搅拌均匀，高速混合4-6min，采用双螺杆造粒方式在双螺杆挤出机进行造粒即得产品。
本发明的有益效果：
本发明采用茂金属聚乙烯作为主料，并拌入有机硅树脂，价格低廉，同时添加了填料改性竹炭粉、碳纤维和纳米碳，使PTC高分子导电材料的弹性模量提高、最大值应力和断裂点应力增大，提高了PTC高分子材料抗拉伸性能，而且材料的电阻稳定、温度均匀，并延长材料的使用寿命。
具体实施方式
实施例1：茂金属聚乙烯为主料的PTC高分子导电材料，其组成原料的重量份（kg）为：茂金属聚乙烯75、有机硅树脂18、邻苯二甲酸酐28、纳米碳16、改性竹炭粉5.5、碳纤维4.0、促进剂CZ 2.2、防老剂OD 2.0、抗氧剂1010 1.2、十溴二苯乙烷5.5和月桂醇硫酸钠4.8。
茂金属聚乙烯为主料的PTC高分子导电材料的制备方法，包括以下步骤：
（1）改性竹炭粉的制备：
a：按组成原料的重量份称取竹炭粉10kg、三聚磷酸钠1.5kg、黄土4.8kg、氟化锆9kg、纳米陶土6.5kg和硅酸钠1.8kg；混合均匀，煅烧3-5小时，控制温度650℃，冷却待用；
b：在步骤（a）冷却后的混合料中加入3.5kg氮化铝、3.5kg乙烯基三(β-甲氧基乙氧基)硅烷和6.0kg油酸丁酯；搅拌混合2-3h后得到；
（2）按所有原料的重量份称取各原料，加入到高速搅拌机搅拌均匀，高速混合5min，采用双螺杆造粒方式在双螺杆挤出机进行造粒即得产品。
上述实施例1制得的PTC高分子导电材料性能检测如下：
1、弹性模量（N/mm2）203.50；2、最大值应力（N/mm2）15.35；3、断裂点应力（N/mm2）12.58；4、拉伸强度（N/mm2）13.3；5、断裂伸长率（%）193；6、起动电流（A/m·10℃）0.19；7、标称功率（W/m·10℃）23.8；8、最高维持温度（℃）69；9、最高承受温度（℃）120。
Claims (3)
1.一种茂金属聚乙烯为主料的PTC高分子导电材料，其特征在于其组成原料的重量份为：茂金属聚乙烯70-80、有机硅树脂15-20、邻苯二甲酸酐25-30、纳米碳14-18、改性竹炭粉5.0-6.0、碳纤维3.5-4.5、促进剂CZ 1.8-2.5、防老剂OD 1.7-2.3、抗氧剂1010 1.0-1.5、十溴二苯乙烷4.5-6.0和月桂醇硫酸钠4.5-5.0。
2.根据权利要求1所述的茂金属聚乙烯为主料的PTC高分子导电材料，其特征在于其组成原料的重量份为：茂金属聚乙烯75、有机硅树脂18、邻苯二甲酸酐28、纳米碳16、改性竹炭粉5.5、碳纤维4.0、促进剂CZ 2.2、防老剂OD 2.0、抗氧剂1010 1.2、十溴二苯乙烷5.5和月桂醇硫酸钠4.8。
3.一种如权利要求1所述的茂金属聚乙烯为主料的PTC高分子导电材料的制备方法，其特征在于包括以下步骤：
（1）改性竹炭粉的制备：
a：按组成原料的重量份称取竹炭粉8-12份、三聚磷酸钠1.0-2.0份、黄土4.0-5.5份、氟化锆8-10份、纳米陶土6.0-7.0份和硅酸钠1.0-2.5份；混合均匀，煅烧3-5小时，控制温度630-680℃，冷却待用；
b：在步骤（a）冷却后的混合料中加入3.0-4.0份氮化铝、3.0-4.0份乙烯基三(β-甲氧基乙氧基)硅烷和5.5-6.5份油酸丁酯；搅拌混合2-3h后得到；
（2）按所有原料的重量份称取各原料，加入到高速搅拌机搅拌均匀，高速混合4-6min，采用双螺杆造粒方式在双螺杆挤出机进行造粒即得产品。
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| CN106169343A (zh) * | 2016-08-09 | 2016-11-30 | 安徽省宁国天成电工有限公司 | 一种应用于电加热器的ptc热敏电阻器芯材 |
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| CN101935418A (zh) * | 2009-06-30 | 2011-01-05 | 比亚迪股份有限公司 | 正温度系数材料及其制备方法及含该材料的热敏电阻及其制备方法 |
| CN102050977A (zh) * | 2009-10-29 | 2011-05-11 | 比亚迪股份有限公司 | 正温度系数材料及其制备方法及含该材料的热敏电阻及其制备方法 |
| CN102344598A (zh) * | 2010-07-30 | 2012-02-08 | 谢志军 | 一种聚合物碳纳米管碳黑复合自控温ptc电发热材料 |
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| CN101935418A (zh) * | 2009-06-30 | 2011-01-05 | 比亚迪股份有限公司 | 正温度系数材料及其制备方法及含该材料的热敏电阻及其制备方法 |
| CN102050977A (zh) * | 2009-10-29 | 2011-05-11 | 比亚迪股份有限公司 | 正温度系数材料及其制备方法及含该材料的热敏电阻及其制备方法 |
| CN102344598A (zh) * | 2010-07-30 | 2012-02-08 | 谢志军 | 一种聚合物碳纳米管碳黑复合自控温ptc电发热材料 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106169343A (zh) * | 2016-08-09 | 2016-11-30 | 安徽省宁国天成电工有限公司 | 一种应用于电加热器的ptc热敏电阻器芯材 |
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