CN107881761A - 制备改性芳纶纤维/石墨烯增强体的方法 - Google Patents

制备改性芳纶纤维/石墨烯增强体的方法 Download PDF

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CN107881761A
CN107881761A CN201711184870.9A CN201711184870A CN107881761A CN 107881761 A CN107881761 A CN 107881761A CN 201711184870 A CN201711184870 A CN 201711184870A CN 107881761 A CN107881761 A CN 107881761A
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aramid fiber
modification
graphene
fiber
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熊玉竹
张清坡
戴骏
江猛
王倩
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Guizhou University
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Abstract

本发明公开了一种制备改性芳纶纤维/石墨烯增强体的方法。本发明采用紫外辐照改性芳纶纤维，再接枝氧化石墨烯，通过该方式制备获得的芳纶纤维表面负载有石墨烯，成为了改性芳纶纤维/石墨烯增强体，这样的方式有效提高了纤维表面的粗糙度，提高界面结合能力，该增强体能显著提高天然橡胶的性能。

Description

制备改性芳纶纤维/石墨烯增强体的方法
技术领域
本发明涉及材料技术领域，尤其是一种制备改性芳纶纤维/石墨烯增强体的方法。
背景技术
纤维作为补强材料被广泛的应用于高分子材料中。芳纶纤维具有高拉伸强度、高拉伸模量；良好的耐疲劳性、耐化学腐蚀性和尺寸稳定性，具有高耐热、低膨胀、低导热、不燃、不溶等优异的性能以及优良的介电性能。然而，芳纶纤维内的苯环具有位阻效应以及沿轴向取向高度结晶，导致酰胺基团很难与其它原子或基团发生反应，使其表面活性官能团相对较少，与聚合物基体的界面结合能力差。因此，必须在使用前对其进行表面活化处理，通过降低纤维的表面取向度或增加一些活性基团，提高其与基体界面粘接强度，来改善芳纶纤维与天然橡胶的界面相容性。
发明内容
本发明的目的是：提供一种制备改性芳纶纤维/石墨烯增强体的方法，它无污染、工艺简单、适宜工业化生产，且获得的产品可以显著提高天然橡胶的性能。
本发明是这样实现的：制备改性芳纶纤维/石墨烯增强体的方法，包括如下步骤：
1)紫外辐照改性芳纶纤维：将芳纶纤维用丙酮清洗、干燥，然后将干燥后芳纶纤维采用紫外光进行辐照改性，将辐照改性后的芳纶纤维剪成5-10mm的短纤维，获得紫外辐照改性芳纶纤维；
2)KH550接枝改性芳纶纤维：配置质量分数为6％的KH550乙醇溶液，将紫外辐照改性芳纶纤维加入KH550乙醇溶液中，在40-80℃的温度下反应4-8h，获得KH550接枝改性芳纶纤维；
3)氧化石墨烯-KH550-紫外辐照改性芳纶纤维：使用NaOH配置PH为9氧化石墨烯的乙醇溶液，然后在加入KH550接枝改性芳纶纤维，在单孔磁力搅拌油浴锅中60-80℃下反应12小时，获得氧化石墨烯-KH550-紫外辐照改性芳纶纤维。
所述的采用紫外光进行辐照改性，具体是：采用300-400nm长波紫外光，芳纶纤维距离紫外光源15-20cm，辐照时间为6-12min。所述的将芳纶纤维用丙酮清洗是指，将芳纶浸泡在丙酮中，在超声波条件下清洗3-8小时。
将KH550乙醇溶液采用超声波震荡110-150min，使其充分分散。
由于采用了上述技术方案，与现有技术相比，本发明采用紫外辐照改性芳纶纤维，再接枝氧化石墨烯，通过该方式制备获得的芳纶纤维表面负载有石墨烯，成为了改性芳纶纤维/石墨烯增强体，这样的方式有效提高了纤维表面的粗糙度，提高界面结合能力，该增强体能显著提高天然橡胶的性能。
附图说明
图1为改性前后芳纶纤维的红外谱图：图1中，(a)Untreated-AF；(b)KH550-UV-AF；(c)氧化石墨烯(GO)；(d)GO-KH550-UV-AF；
图2芳纶纤维的XPS宽谱图:图2中，(a)Untreated-AF；(b)KH550-UV-AF；(c)GO-KH550-UV-AF；
图3改性前后芳纶纤维的表面形貌图：图3中，(a)Untreated-AF；(b)GO-KH550-UV-AF；
图4改性前后芳纶纤维TG-DTG曲线：图4中(a)Untreated-AF；(b)KH550-UV-AF；(c)GO-KH550-UV-AF；
图5改性前后芳纶纤维与天然橡胶复合材料界面结合作用：图5中(a)Untreated-AF/CB/NR；(b)GO-KH550-UV-AF/CB/NR；
图6Untreated-AF/CB/NR和GO-KH550-UV-AF/CB/NR复合材料硫化曲线；
图7Untreated-AF/CB/NR和GO-KH550-UV-AF/CB/NR硫化胶应变扫描；
图8Untreated-AF/CB/NR和GO-KH550-UV-AF/CB/NR硫化胶的压缩生热情况；
具体实施方式
本发明的实施例：制备改性芳纶纤维/石墨烯增强体的方法，包括如下步骤：
1)紫外辐照改性芳纶纤维：将芳纶纤维放置在烧杯中，加入丙酮进行浸泡，为防止丙酮挥发，立刻用保鲜膜将烧杯口封严；将封好的烧杯放在超声波清洗器中清洗4h，除去在生产芳纶纤维是表面残余的有机杂质后，放入干燥箱中烘干，然后将干燥后芳纶纤维放置在距离紫外灯15cm处用紫外光辐照改性10分钟，然后将辐照改性后的芳纶纤维剪成5-10mm的短纤维，获得紫外辐照改性芳纶纤维；
2)KH550接枝改性芳纶纤维：配置质量分数为6％的KH550乙醇溶液，将KH550乙醇溶液采用超声波震荡110-15min，使其充分分散，再将紫外辐照改性芳纶纤维加入已经充分分散的KH550乙醇溶液中，在60℃的温度下反应5h，获得KH550接枝改性芳纶纤维；
3)氧化石墨烯-KH550-紫外辐照改性芳纶纤维：配置PH＝9氧化石墨烯乙醇溶液，在配好的溶液中放入转子，然后在加入KH550接枝改性芳纶纤维，在单孔磁力搅拌油浴锅中70℃下反应12小时，取出放入烘箱中烘干，获得氧化石墨烯-KH550-紫外辐照改性芳纶纤维(GO-KH550-UV-AF)。此处制备的GO-KH550-UV-AF红外图谱如图1(d)，SEM形貌结构如图3(b)。
表1 Untreated-AF/CB/NR、GO-KH550-UV-AF/CB/NR复合材料的静态力学性能参数。

Claims (4)

1.一种制备改性芳纶纤维/石墨烯增强体的方法，其特征在于，包括如下步骤：
1)紫外辐照改性芳纶纤维：将芳纶纤维用丙酮清洗、干燥，然后将干燥后芳纶纤维采用紫外光进行辐照改性，将辐照改性后的芳纶纤维剪成5-10mm的短纤维，获得紫外辐照改性芳纶纤维；
2)KH550接枝改性芳纶纤维：配置质量分数为6％的KH550乙醇溶液，将紫外辐照改性芳纶纤维加入KH550乙醇溶液中，在40-80℃的温度下反应4-8h，获得KH550接枝改性芳纶纤维；
3)氧化石墨烯-KH550-紫外辐照改性芳纶纤维：使用NaOH配置PH为9氧化石墨烯的乙醇溶液，然后在加入KH550接枝改性芳纶纤维，在单孔磁力搅拌油浴锅中60-80℃下反应12小时，获得氧化石墨烯-KH550-紫外辐照改性芳纶纤维。
2.根据权利要求1所述的制备改性芳纶纤维/石墨烯增强体的方法，其特征在于：所述的采用300-400nm长波紫外光进行辐照改性，具体是：芳纶纤维距离紫外光源15-20cm，辐照时间为6-12min。
3.根据权利要求1所述的制备改性芳纶纤维/石墨烯增强体的方法，其特征在于：所述的将芳纶纤维用丙酮清洗是指，将芳纶浸泡在丙酮中，在超声波条件下清洗3-8小时。
4.根据权利要求1所述的制备改性芳纶纤维/石墨烯增强体的方法，其特征在于：将KH550乙醇溶液采用超声波震荡110-150min，使其充分分散。
CN201711184870.9A 2017-11-23 2017-11-23 制备改性芳纶纤维/石墨烯增强体的方法 Pending CN107881761A (zh)

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CN109608134A (zh) * 2018-12-29 2019-04-12 济南大学 一种水泥板及其半干法制备工艺
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CN108976608A (zh) * 2018-08-10 2018-12-11 福建工程学院 一种石墨烯改性黄麻纤维/聚丙烯复合材料及其制备方法
CN109403020A (zh) * 2018-10-30 2019-03-01 山东安恒华盛石墨烯材料科技有限公司 一种耐紫外石墨烯复合对位芳纶纤维及制备方法和应用
CN109608134A (zh) * 2018-12-29 2019-04-12 济南大学 一种水泥板及其半干法制备工艺
CN109608134B (zh) * 2018-12-29 2021-05-25 济南大学 一种水泥板及其半干法制备工艺
CN111118905A (zh) * 2020-01-17 2020-05-08 中国人民解放军陆军工程大学 一种芳纶纤维的表面改性方法
CN111118905B (zh) * 2020-01-17 2022-02-22 中国人民解放军陆军工程大学 一种芳纶纤维的表面改性方法

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