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ANF/TiO2机械力化学复合对芳纶纳米复合纸抗紫外老化性能的影响
Fabrication of TiO2/ANF Composite Based on Mechanochemical Effect and Its Effect on the UV-resistance of Aramid Nanopaper
收稿日期:2022-08-06  
DOI:10.11980/j.issn.0254-508X.2022.11.005
关键词:  芳纶纳米纤维  纳米TiO2  机械力化学  抗紫外性能  纸张强度
Key Words:aramid nanofiber  nano-TiO2  mechanochemistry  UV-resistance  paper strength
基金项目:陕西省重点研发计划项目(2022GY-275,2021ZDLGY14-05);国家自然科学基金(22008146);天津市制浆造纸重点实验室(天津科技大学)开放基金(202005)。
作者单位邮编
宋顺喜* 陕西科技大学轻工科学与工程学院教育部轻化工程专业虚拟教研室轻化工程国家级实验教学示范中心陕西西安710021 710021
袁宝龙 陕西科技大学轻工科学与工程学院教育部轻化工程专业虚拟教研室轻化工程国家级实验教学示范中心陕西西安710021 710021
戢德贤 陕西科技大学轻工科学与工程学院教育部轻化工程专业虚拟教研室轻化工程国家级实验教学示范中心陕西西安710021 710021
张倩 陕西科技大学轻工科学与工程学院教育部轻化工程专业虚拟教研室轻化工程国家级实验教学示范中心陕西西安710021 710021
杨斌 陕西科技大学轻工科学与工程学院教育部轻化工程专业虚拟教研室轻化工程国家级实验教学示范中心陕西西安710021 710021
张美云 陕西科技大学轻工科学与工程学院教育部轻化工程专业虚拟教研室轻化工程国家级实验教学示范中心陕西西安710021 710021
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摘要:以芳纶纳米纤维(ANF)和纳米TiO2为原料,基于机械力化学原理,采用超声共混法或球磨复合法实现ANF与纳米TiO2复合,制备出具有优异抗紫外和强度性能的芳纶纳米复合纸(以下简称复合纸),探究了复合方法和纳米TiO2添加量对复合纸抗紫外老化性能与强度性能的影响。结果表明,与传统的超声共混法相比,采用球磨复合法有利于改善ANF与纳米TiO2的界面结合。当纳米TiO2添加量为6%时,球磨法制备的复合纸断裂应力70.13 MPa,与未添加纳米TiO2复合纸相比,纸张断裂应力提高了12%;同时,紫外老化后,该复合纸强度保留率为81.5%,与超声共混法相比提高了15.8个百分点。随着纳米TiO2添加量的提高,球磨复合法制备的复合纸抗紫外老化性能改善效果更加明显。
Abstract:Aramid nanofiber/nano-TiO2 composite paper with excellent mechanical strength and UV-resistance ability was fabricated by ultrasound blending or ball milling to mix aramid nanofiber and nano-TiO2 based on mechanochemical mechanism. The effects of preparation method and nano-TiO2 dosage on the strength and UV-resistance of the composite paper were investigated. The results showed that compared with traditional method of ultra-sound blending, ball milling could enhance the interface bonding between ANF and nano-TiO2. When nano-TiO2 dosage was 6%, the strength of paper fabricated by ball milling was 70.13 MPa, which was increased by 12% compared with that of paper made by ultra-sound blending. In addition, the strength retention rate of the composite paper made by ball milling was 81.5%, which was increased by 15.8 percentage points compared with the sample made by ultra-sound blending. The UV-resistance of the composite paper made by ball milling was also enhanced with increasing the dosage of nano-TiO2.
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