PA6/TiO_2-GO复合材料的制备及其性能研究
|
摘要
通过双螺杆挤出机将聚酰胺6(PA6)、纳米TiO_2、氧化石墨烯(GO)熔融共混制备了PA6/TiO_2-GO复合材料,采用差示扫描量热仪、电子万能拉伸试验机、可见分光光度计等仪器研究了纳米TiO_2用量对PA6/TiO_2-GO复合材料的热学性能、力学性能、光催化性能等的影响。结果表明,随着纳米TiO_2含量的增加,复合材料的熔点逐渐降低,结晶度先增大后减小(复合材料的结晶度均大于纯PA6的结晶度);断裂强度逐渐减小,断裂伸长率逐渐增大;纳米TiO_2对亚甲基蓝溶液的光催化降解能力越来越强;在相同纳米TiO_2含量时,加入GO后能有效提高TiO_2的光催化降解能力,光催化降解能力能提高10%左右。
Photocatalytic technology plays an important role in sewage treatment of and air purification.In this paper,the effect of nano-TiO_2content on the thermal properties,mechanical properties,photocatalytic properties of PA6/TiO_2-GO composites were investigated by differential scanning calorimeter,electronic universal tensile testing machine,visible spectrophotometer and other instruments.The results indicated that the melting point of the composites decreased gradually with an increase of nano-TiO_2 content,and the degree of crystallinity exhibited an increasing trend at first and then tended to decrease.Meanwhile,the breaking strength decreased gradually,whereas the elongation at break increased gradually.Moreover,the nano-TiO_2 exhibited an increasing photocatalytic activity for degradation of the methylene blue solution.The incorporation of graphene oxide(GO)could effectively improve the photocatalytic effectiveness of nano-TiO_2 by approximately 10%.
Photocatalytic technology plays an important role in sewage treatment of and air purification.In this paper,the effect of nano-TiO_2content on the thermal properties,mechanical properties,photocatalytic properties of PA6/TiO_2-GO composites were investigated by differential scanning calorimeter,electronic universal tensile testing machine,visible spectrophotometer and other instruments.The results indicated that the melting point of the composites decreased gradually with an increase of nano-TiO_2 content,and the degree of crystallinity exhibited an increasing trend at first and then tended to decrease.Meanwhile,the breaking strength decreased gradually,whereas the elongation at break increased gradually.Moreover,the nano-TiO_2 exhibited an increasing photocatalytic activity for degradation of the methylene blue solution.The incorporation of graphene oxide(GO)could effectively improve the photocatalytic effectiveness of nano-TiO_2 by approximately 10%.
引文
[1]高永,孔峰,程洁红,等.TiO2光催化-微滤膜分离深度净化亚甲基蓝印染废水[J].环境工程学报,2012,6(10):3 585-3 590.GAO Y,KONG F,CHENG J H,et al.Deep Purification of Methylene Blue Printing and Dyeing Wastewater by TiO2Photocatalysis Microfiltration Membrane Separation[J].Journal of Environmental Engineering,2012,6(10):3 585-3 590.
[2]曾斐,梅瑜,成卓韦,等.二氧化钛紫外光催化降解有机废气研究进展[J].环境科学与技术,2013,36(6):91-98.CENG F,MEI Y,CHENG Z W,et al.Research Progress in Photocatalytic Degradation of Organic Waste Gas by TiO2[J].Environmental Science and Technology,2013,36(6):91-98.
[3]刘辉,董晓楠,孙超超.石墨烯/二氧化钛复合光催化剂的制备及可见光催化性能研究[J].陕西科技大学学报(自然科学版),2013,31(1):23-28.LIU H,DONG X N,SUN C C.Preparation of Graphene/Titanium Dioxide Composite Photocatalyst and Study on Its Visible Light Photocatalytic Activity[J].Journal of Shaanxi University of Science and Technology(Natural Science Edition),2013,31(1):23-28.
[4]杨旭宇,王贤保,李静,等.氧化石墨烯/尼龙6复合材料的等温结晶行为[J].功能材料,2013,44(15):2 175-2 178,2 183.YANG X Y,WANG X B,LI J,et al.Isothermal Crystallization Behavior of Graphene Oxide/Nylon 6 Composites[J].Functional Materials,2013,44(15):2 175-2 178,2 183.
[5]杨超男,陈英红,何雪薇,等.微型注塑PA6/石墨烯复合材料的结晶与力学性能[J/OL].材料科学与工,1-13[2018-05-11].http://kns.cnki.net/kcms/detail/23.1345.TB.20180330.1637.004.html.YANG C N,CHEN Y H,HE X W,et al.Crystallization and Mechanical Properties of Micro-injection Molded PA6/Graphene Composites[J/OL].Material Science and Technology,1-13[2018-05-11].http://kns.cnki.net/kcms/detail/23.1345.TB.20180330.1637.004.html.
[6]蒋健强.尼龙6基聚合物共混物拉伸行为和相容性研究[D].湘潭:湘潭大学,2017.
[7]赵先辉.可见光下Bi2WO6光催化降解亚甲基蓝研究[D].镇江:江苏大学,2007.
[8]邱克辉,邹璇,张佩聪,等.纳米TiO2光催化降解亚甲基蓝[J].矿物岩石,2007(4):13-16.QIU K H,ZOU X,ZHANG P C,et al.Photocatalytic Degradation of Methylene Blue by Nano TiO2[J].Mineral Rock,2007(4):13-16.
[9]张晓艳,李浩鹏,崔晓莉.TiO2/石墨烯复合材料的合成及光催化分解水产氢活性[J].无机化学学报,2009,25(11):1 903-1 907.ZHANG X Y,LI H P,CUI X L.Synthesis and Photocatalytic Decomposition of TiO2/Graphene Composites for Hydrogen Production[J].Journal of Inorganic Chemistry,2009,25(11):1 903-1 907.
[2]曾斐,梅瑜,成卓韦,等.二氧化钛紫外光催化降解有机废气研究进展[J].环境科学与技术,2013,36(6):91-98.CENG F,MEI Y,CHENG Z W,et al.Research Progress in Photocatalytic Degradation of Organic Waste Gas by TiO2[J].Environmental Science and Technology,2013,36(6):91-98.
[3]刘辉,董晓楠,孙超超.石墨烯/二氧化钛复合光催化剂的制备及可见光催化性能研究[J].陕西科技大学学报(自然科学版),2013,31(1):23-28.LIU H,DONG X N,SUN C C.Preparation of Graphene/Titanium Dioxide Composite Photocatalyst and Study on Its Visible Light Photocatalytic Activity[J].Journal of Shaanxi University of Science and Technology(Natural Science Edition),2013,31(1):23-28.
[4]杨旭宇,王贤保,李静,等.氧化石墨烯/尼龙6复合材料的等温结晶行为[J].功能材料,2013,44(15):2 175-2 178,2 183.YANG X Y,WANG X B,LI J,et al.Isothermal Crystallization Behavior of Graphene Oxide/Nylon 6 Composites[J].Functional Materials,2013,44(15):2 175-2 178,2 183.
[5]杨超男,陈英红,何雪薇,等.微型注塑PA6/石墨烯复合材料的结晶与力学性能[J/OL].材料科学与工,1-13[2018-05-11].http://kns.cnki.net/kcms/detail/23.1345.TB.20180330.1637.004.html.YANG C N,CHEN Y H,HE X W,et al.Crystallization and Mechanical Properties of Micro-injection Molded PA6/Graphene Composites[J/OL].Material Science and Technology,1-13[2018-05-11].http://kns.cnki.net/kcms/detail/23.1345.TB.20180330.1637.004.html.
[6]蒋健强.尼龙6基聚合物共混物拉伸行为和相容性研究[D].湘潭:湘潭大学,2017.
[7]赵先辉.可见光下Bi2WO6光催化降解亚甲基蓝研究[D].镇江:江苏大学,2007.
[8]邱克辉,邹璇,张佩聪,等.纳米TiO2光催化降解亚甲基蓝[J].矿物岩石,2007(4):13-16.QIU K H,ZOU X,ZHANG P C,et al.Photocatalytic Degradation of Methylene Blue by Nano TiO2[J].Mineral Rock,2007(4):13-16.
[9]张晓艳,李浩鹏,崔晓莉.TiO2/石墨烯复合材料的合成及光催化分解水产氢活性[J].无机化学学报,2009,25(11):1 903-1 907.ZHANG X Y,LI H P,CUI X L.Synthesis and Photocatalytic Decomposition of TiO2/Graphene Composites for Hydrogen Production[J].Journal of Inorganic Chemistry,2009,25(11):1 903-1 907.