CN107034722A - 碳纳米管导电纸的制备方法 - Google Patents
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Abstract
本发明涉及功能材料技术领域,具体涉及一种碳纳米管导电纸的制备方法。碳纳米管导电纸的制备方法,(1)碳纳米管的石墨化处理;(2)导电纤维的制备;(3)碳纳米管导电纸的成形。碳纳米管导电纸作为一种新型的复合材料,在电学、磁学、热学方面具有优异的性能,通过石墨化处理后,去除了碳纳米管内部杂质,改善了碳纳米管的微观结构,提高了结晶度,使原子排列规整致密,并且更易于分散于纸纤维之间,明显提高了碳纳米管导电纸的综合性能。经石墨化改性后导电纸的导电性和导热性大幅提升。
Description
技术领域
本发明涉及功能材料技术领域,具体涉及一种碳纳米管导电纸的制备方法。
背景技术
造纸作为一门古老的艺术,曾经对人类文明发展做出过杰出贡献,在科技飞速发展的今天,仍然广泛地应用于通讯、包装、建筑和现代生活的许多方面。“功能纸”是当代研究的新兴领域,它的出现引领了造纸业的巨变。利用纸的柔韧性和吸附性,加入相应功能材料,纸就可以具有导电、磁性、发光、催化、抗菌、隔音、阻燃等特性。其中导电纸的研究进展较快,导电纸是一种具有导电特性的功能纸,可广泛应用于防静电包装材料、电磁屏蔽材料、新能源和电化学材料、面状发热材料、传感和制动材料等领域。
碳纳米管作为纳米材料,具有优越的物理化学和机械性能,其导电性好,比表面积大,吸附性强,长径比大,易构成三维导电网络,在与纸纤维复合后可以制得性能优异的导电纸,表现出良好的电学、磁学、热学性能。
发明内容
本发明旨在提出一种碳纳米管导电纸的制备方法。
本发明的技术方案在于:
碳纳米管导电纸的制备方法,包括如下步骤:
(1)碳纳米管的石墨化处理
将碳纳米管置于石墨坩埚,放入石墨化炉内,石墨化炉抽取真空后通入高纯氩气保护,缓慢升温至2500~2800℃以上保温30~45min,停炉降温,石墨化处理结束;取出石墨化处理后的碳纳米管样品,称取碳纳米管,将碳纳米管研磨成粉末,放入球磨罐中以230~250r/min转速在行星球磨机中球磨2~2.5h,制得结构均匀、高纯度的碳纳米管;
(2)导电纤维的制备
称取2~2.5g再生纸纤维,置于一定量蒸馏水中,采用3500~4000r/min 高速剪切分散2.5~3h,静置2~3h,滤掉部分上清液,取下层浊液备用;称取2~3g石墨化碳纳米管和未石墨化碳纳米管,经无水乙醇润湿后溶于蒸馏水中,超声处理1.5~2h;将制成的碳纳米管分散液加入至纸纤维悬浊液内,以3500~4000r/min 高速剪切1~2h,形成导电纤维悬浊液;
(3)碳纳米管导电纸的成形
将导电纤维悬浮液均匀沉积在滤纸上,形成致密纤维网,经过轧制后置于50~60℃干燥箱烘干10~12h后,制成碳纳米管导电纸。
所述的在形成导电纤维悬浊液时,若液体表面有气泡,则加磷酸三丁酯直至无气泡。
所述的将导电纤维悬浮液均匀沉积在滤纸上时采用真空抽滤法。
所述的球磨机采用行星球磨机。
本发明的技术效果在于:
碳纳米管导电纸作为一种新型的复合材料,在电学、磁学、热学方面具有优异的性能,通过石墨化处理后,去除了碳纳米管内部杂质,改善了碳纳米管的微观结构,提高了结晶度,使原子排列规整致密,并且更易于分散于纸纤维之间,明显提高了碳纳米管导电纸的综合性能。经石墨化改性后导电纸的导电性和导热性大幅提升。
具体实施方式
碳纳米管导电纸的制备方法,包括如下步骤:
实施例1
(1)碳纳米管的石墨化处理
将碳纳米管置于石墨坩埚,放入石墨化炉内,石墨化炉抽取真空后通入高纯氩气保护,缓慢升温至2500℃以上保温30min,停炉降温,石墨化处理结束;取出石墨化处理后的碳纳米管样品,称取碳纳米管,将碳纳米管研磨成粉末,放入球磨罐中以230r/min 转速在行星球磨机中球磨2h,制得结构均匀、高纯度的碳纳米管;
(2)导电纤维的制备
称取2g再生纸纤维,置于一定量蒸馏水中,采用3500r/min 高速剪切分散2.5h,静置2h,滤掉部分上清液,取下层浊液备用;称取2g石墨化碳纳米管和未石墨化碳纳米管,经无水乙醇润湿后溶于蒸馏水中,超声处理1.5h;将制成的碳纳米管分散液加入至纸纤维悬浊液内,以3500r/min 高速剪切1h,形成导电纤维悬浊液;
(3)碳纳米管导电纸的成形
将导电纤维悬浮液均匀沉积在滤纸上,形成致密纤维网,经过轧制后置于50℃干燥箱烘干10h后,制成碳纳米管导电纸。
形成导电纤维悬浊液时,若液体表面有气泡,则加磷酸三丁酯直至无气泡。所述的将导电纤维悬浮液均匀沉积在滤纸上时采用真空抽滤法。所述的球磨机采用行星球磨机。
实施例2
(1)碳纳米管的石墨化处理
将碳纳米管置于石墨坩埚,放入石墨化炉内,石墨化炉抽取真空后通入高纯氩气保护,缓慢升温至2800℃以上保温45min,停炉降温,石墨化处理结束;取出石墨化处理后的碳纳米管样品,称取碳纳米管,将碳纳米管研磨成粉末,放入球磨罐中以250r/min 转速在行星球磨机中球磨2.5h,制得结构均匀、高纯度的碳纳米管;
(2)导电纤维的制备
称取2.5g再生纸纤维,置于一定量蒸馏水中,采用4000r/min 高速剪切分散3h,静置3h,滤掉部分上清液,取下层浊液备用;称取3g石墨化碳纳米管和未石墨化碳纳米管,经无水乙醇润湿后溶于蒸馏水中,超声处理2h;将制成的碳纳米管分散液加入至纸纤维悬浊液内,以4000r/min 高速剪切2h,形成导电纤维悬浊液;
(3)碳纳米管导电纸的成形
将导电纤维悬浮液均匀沉积在滤纸上,形成致密纤维网,经过轧制后置于60℃干燥箱烘干2h后,制成碳纳米管导电纸。
Claims (4)
1.碳纳米管导电纸的制备方法,其特征在于:包括如下步骤:
(1)碳纳米管的石墨化处理
将碳纳米管置于石墨坩埚,放入石墨化炉内,石墨化炉抽取真空后通入高纯氩气保护,缓慢升温至2500~2800℃以上保温30~45min,停炉降温,石墨化处理结束;取出石墨化处理后的碳纳米管样品,称取碳纳米管,将碳纳米管研磨成粉末,放入球磨罐中以230~250r/min转速在行星球磨机中球磨2~2.5h,制得结构均匀、高纯度的碳纳米管;
(2)导电纤维的制备
称取2~2.5g再生纸纤维,置于一定量蒸馏水中,采用3500~4000r/min 高速剪切分散2.5~3h,静置2~3h,滤掉部分上清液,取下层浊液备用;称取2~3g石墨化碳纳米管和未石墨化碳纳米管,经无水乙醇润湿后溶于蒸馏水中,超声处理1.5~2h;将制成的碳纳米管分散液加入至纸纤维悬浊液内,以3500~4000r/min 高速剪切1~2h,形成导电纤维悬浊液;
(3)碳纳米管导电纸的成形
将导电纤维悬浮液均匀沉积在滤纸上,形成致密纤维网,经过轧制后置于50~60℃干燥箱烘干10~12h后,制成碳纳米管导电纸。
2.根据权利要求1所述的碳纳米管导电纸的制备方法,其特征在于:所述的在形成导电纤维悬浊液时,若液体表面有气泡,则加磷酸三丁酯直至无气泡。
3.根据权利要求1所述的碳纳米管导电纸的制备方法,其特征在于:所述的将导电纤维悬浮液均匀沉积在滤纸上时采用真空抽滤法。
4.根据权利要求1所述的碳纳米管导电纸的制备方法,其特征在于:所述的球磨机采用行星球磨机。
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107419607A (zh) * | 2017-09-30 | 2017-12-01 | 成都新柯力化工科技有限公司 | 一种高强度碳纳米管导电纸及制备方法 |
CN107541996A (zh) * | 2016-06-25 | 2018-01-05 | 董晓 | 一种改性碳纳米管电磁屏蔽纸的制备方法 |
CN107841902A (zh) * | 2017-10-20 | 2018-03-27 | 成都新柯力化工科技有限公司 | 一种电磁屏蔽复合纸及其制备方法 |
CN107964830A (zh) * | 2017-11-17 | 2018-04-27 | 苏州甫众塑胶有限公司 | 一种复合导电纸的制备方法 |
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- 2016-11-24 CN CN201611043110.1A patent/CN107034722A/zh active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107541996A (zh) * | 2016-06-25 | 2018-01-05 | 董晓 | 一种改性碳纳米管电磁屏蔽纸的制备方法 |
CN107419607A (zh) * | 2017-09-30 | 2017-12-01 | 成都新柯力化工科技有限公司 | 一种高强度碳纳米管导电纸及制备方法 |
CN107841902A (zh) * | 2017-10-20 | 2018-03-27 | 成都新柯力化工科技有限公司 | 一种电磁屏蔽复合纸及其制备方法 |
CN107964830A (zh) * | 2017-11-17 | 2018-04-27 | 苏州甫众塑胶有限公司 | 一种复合导电纸的制备方法 |
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