CN104327505A - 一种石墨烯-共混聚酰亚胺导电薄膜的制备方法 - Google Patents

一种石墨烯-共混聚酰亚胺导电薄膜的制备方法 Download PDF

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CN104327505A
CN104327505A CN201410488324.4A CN201410488324A CN104327505A CN 104327505 A CN104327505 A CN 104327505A CN 201410488324 A CN201410488324 A CN 201410488324A CN 104327505 A CN104327505 A CN 104327505A
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张明
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Abstract

本发明的一种石墨烯-共混聚酰亚胺导电薄膜的制备方法,步骤为:(1)向容器中加入溶剂醋酸甲酯、杂环胺及ODA,边搅拌边加入PMDA,反应3h生成聚酰胺酸溶液;(2)在上述溶液中加入石墨烯粉末,进行超声处理2h,超声过程中保持温度为25-35℃,得到石墨烯-聚酰胺酸溶液;(3)将上述溶液在玻璃板上进行铺膜并刮平,在普通烘箱中除去溶剂醋酸甲酯,再放置于真空烘箱中,使得石墨烯-聚酰胺酸亚胺化完全,从而得到石墨烯-共混聚酰亚胺导电薄膜。本发明可以降低聚酰亚胺的表面电导率,防止静电,扩大其应用范围。

Description

一种石墨烯-共混聚酰亚胺导电薄膜的制备方法
    技术领域
本发明涉及一种石墨烯-共混聚酰亚胺导电薄膜的制备方法,属材料加工领域。
技术背景      
现有技术中,聚酰亚胺高效隔热吸声轻质材料耐高低温、密度小、无毒、无烟、施工便利安全、吸声性能好,是船舶舰艇、航空航天、高速列车等领域隔热吸声材料的极佳选择。但是聚酰亚胺薄膜的表面电阻率在1016Ω/square 级,导电性不好,其本身可以作为一种绝缘材料,但是随着太空领域的拓展,聚酰亚胺材料在航空航天工程上的应用越来越广泛,对于其各项性能的要求也各不相同。在正常的环境下,由于其极低的电导率,电荷难以移动,使负载在表面的电荷很难消散出去,形成静电。这种静电在船舶、航空器中以及电子元件中有着相当大的危害,会造成电容击穿,电子元件被损坏等极其严重的后果。
发明内容
本发明的目的是提供一种石墨烯-共混聚酰亚胺导电薄膜的制备方法,可以降低聚酰亚胺的表面电导率,防止静电,扩大其应用范围。
为实现以上目的,本发明的一种石墨烯-共混聚酰亚胺导电薄膜的制备方法,步骤为:(1) 向容器中加入溶剂醋酸甲酯、4,4'-二辛基二苯胺(ODA)及杂环胺,边搅拌边加入均苯四甲酸二酐(PMDA),反应3h生成聚酰胺酸溶液;(2) 在上述溶液中加入石墨烯粉末,进行超声处理2h,超声过程中保持温度为25-35℃,得到石墨烯-聚酰胺酸溶液;(3) 将上述溶液在玻璃板上进行铺膜并刮平,在普通烘箱中除去溶剂醋酸甲酯,再放置于真空烘箱中,使得石墨烯-聚酰胺酸亚胺化完全,从而得到石墨烯-共混聚酰亚胺导电薄膜。
进一步的,所述PMDA、ODA、杂环胺的质量比为1:0.8-1.2:0.1-0.3。
进一步的,所述PMDA与溶剂醋酸甲酯的料液比为1 g:10-20ml。
进一步的,所述石墨烯的质量为PMDA质量的0.08-0.16%。
进一步的,所述步骤(2)中超声波功率为200W,在温度为25℃时超声处理1h,然后将温度提高到35℃再进行超声处理1h。
本发明产生的有益效果为,本发明在聚酰亚胺中加入石墨烯会增加聚酰亚胺分子链之间的摩擦,使得聚酰亚胺与石墨烯之间产生作用力,并增加聚合物的刚性,从而使聚酰亚胺分子链不容易运动,从而增加聚酰亚胺膜的弹性模量、拉伸强度及断裂伸长率。另一方面,由于石墨烯具有极高的电导性,将石墨烯加入到聚酰亚胺中可以降低其表面电导率,防止电荷聚集形成静电而造成不必要的损失。
实施例
实施例1:
由以下方法制备石墨烯-共混聚酰亚胺导电薄膜:
(1) 向容器中加入2000ml溶剂醋酸甲酯、80g4,4'-二辛基二苯胺(ODA)及10g杂环胺,边搅拌边加入100g均苯四甲酸二酐(PMDA),反应3h生成聚酰胺酸溶液;(2) 在上述溶液中加入0.15g石墨烯粉末,进行超声处理,超声波功率为200W,在温度为25℃时超声处理1h,然后将温度提高到35℃再进行超声处理1h,得到石墨烯-共混聚酰胺酸溶液;(3) 将上述溶液在玻璃板上进行铺膜并刮平,在普通烘箱中除去溶剂醋酸甲酯,再放置于真空烘箱中,使得石墨烯-聚酰胺酸亚胺化完全,从而得到石墨烯-共混聚酰亚胺导电薄膜。
制备得到的石墨烯-共混聚酰亚胺导电薄膜的弹性模量为2.82GPa、拉伸强度184MPa、断裂伸长率20%,上下表面电阻率分别为1.2067×108Ω/square 及7.2238×107Ω/square。
实施例2:
由以下方法制备石墨烯-共混聚酰亚胺导电薄膜:
(1) 向容器中加入3000ml溶剂醋酸甲酯及100g4,4'-二辛基二苯胺(ODA) 及20g杂环胺,边搅拌边加入100g均苯四甲酸二酐(PMDA),反应3h生成聚酰胺酸溶液;(2) 在上述溶液中加入0.2g石墨烯粉末,进行超声处理,超声波功率为200W,在温度为25℃时超声处理1h,然后将温度提高到35℃再进行超声处理1h,得到石墨烯-聚酰胺酸溶液;(3) 将上述溶液在玻璃板上进行铺膜并刮平,在普通烘箱中除去溶剂醋酸甲酯,再放置于真空烘箱中,使得石墨烯-聚酰胺酸亚胺化完全,从而得到石墨烯-共混聚酰亚胺导电薄膜。
制备得到的石墨烯-共混聚酰亚胺导电薄膜的弹性模量为2.88GPa、拉伸强度193MPa、断裂伸长率20%,上下表面电阻率分别为1.2417×108Ω/square 及7.2518×107Ω/square。
实施例3:
由以下方法制备石墨烯-共混聚酰亚胺导电薄膜:
(1) 向容器中加入2000ml溶剂醋酸甲酯及120g4,4'-二辛基二苯胺(ODA) 及30g杂环胺,边搅拌边加入100g均苯四甲酸二酐(PMDA),反应3h生成聚酰胺酸溶液;(2) 在上述溶液中加入0.3g石墨烯粉末,进行超声处理,超声波功率为200W,在温度为25℃时超声处理1h,然后将温度提高到35℃再进行超声处理1h,得到石墨烯-聚酰胺酸溶液;(3) 将上述溶液在玻璃板上进行铺膜并刮平,在普通烘箱中除去溶剂醋酸甲酯,再放置于真空烘箱中,使得石墨烯-聚酰胺酸亚胺化完全,从而得到石墨烯-共混聚酰亚胺导电薄膜。
制备得到的石墨烯-共混聚酰亚胺导电薄膜的弹性模量为2.76GPa、拉伸强度174MPa、断裂伸长率20%,上下表面电阻率分别为1.3181×108Ω/square 及7.6718×107Ω/square。

Claims (5)

1.一种石墨烯-共混聚酰亚胺导电薄膜的制备方法,其特征在于:步骤为:
(1) 向容器中加入溶剂醋酸甲酯、ODA与杂环胺,边搅拌边加入PMDA,反应3h生成共混聚酰胺酸溶液;
(2) 在上述溶液中加入石墨烯粉末,进行超声处理2h,超声过程中保持温度为25-35℃,得到石墨烯-聚酰胺酸溶液;
(3) 将上述溶液在玻璃板上进行铺膜并刮平,在普通烘箱中除去溶剂醋酸甲酯,再放置于真空烘箱中,使得石墨烯-共混聚酰胺酸亚胺化完全,从而得到石墨烯-共混聚酰亚胺导电薄膜。
2.根据权利要求1所述的一种石墨烯-共混聚酰亚胺导电薄膜的制备方法,其特征在于:所述PMDA、ODA、杂环胺的质量比为1:0.8-1.2:0.1-0.3。
3.根据权利要求1所述的一种石墨烯-共混聚酰亚胺导电薄膜的制备方法,其特征在于:所述PMDA与溶剂醋酸甲酯的料液比为1 g:10-20ml。
4.根据权利要求1所述的一种石墨烯-共混聚酰亚胺导电薄膜的制备方法,其特征在于:所述石墨烯的质量为PMDA质量的0.08-0.16%。
5.根据权利要求1所述的一种石墨烯-共混聚酰亚胺导电薄膜的制备方法,其特征在于:所述步骤(2)中超声波功率为200W,在温度为25℃时超声处理1h,然后将温度提高到35℃再进行超声处理1h。
CN201410488324.4A 2014-09-23 2014-09-23 一种石墨烯-共混聚酰亚胺导电薄膜的制备方法 Pending CN104327505A (zh)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN110894292A (zh) * 2019-10-31 2020-03-20 安徽国风塑业股份有限公司 一种荧光型聚酰亚胺薄膜及其制备方法

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CN102911360A (zh) * 2012-11-01 2013-02-06 南京航空航天大学 一种石墨烯改性聚酰亚胺基复合材料及其制备方法
CN103694487A (zh) * 2013-12-13 2014-04-02 青岛海洋新材料科技有限公司 一种碳纤维-聚酰亚胺复合薄膜的制备方法
CN103694490A (zh) * 2013-12-16 2014-04-02 陕西煤业化工技术研究院有限责任公司 一种高温聚酰亚胺质子交换膜及其制备方法

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110894292A (zh) * 2019-10-31 2020-03-20 安徽国风塑业股份有限公司 一种荧光型聚酰亚胺薄膜及其制备方法

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