石墨烯/低密度聚乙烯复合膜的制备及性能  

Preparation and Performance of Graphene/Low Density Polyethylene Composite Film

作　　者：单利君 林勤保[1] 张明[1] 陈朝方[2] 廖佳[2] 

机构地区：[1]暨南大学,珠海519070 [2]珠海出入境检验检疫局,珠海519070

出　　处：《包装工程》2017年第13期60-65,共6页Packaging Engineering

基　　金：国家自然科学基金(21277085);广东省自然科学基金(2015A030313329);国家质检总局科技计划(2015IK338)

摘　　要：目的以石墨烯/低密度聚乙烯(LDPE)复合包装材料为研究对象,讨论石墨烯、石墨烯微片对低密度聚乙烯薄膜力学性能、颜色、透光率及透氧率的影响。方法使用熔融共混方法制备不同石墨烯质量分数的石墨烯/LDPE复合材料,检测并比较其性能变化。结果石墨烯以及石墨烯微片的加入,使LDPE薄膜的弹性模量提高了9%~50%,横纵向拉伸强度提高了2%~30%,透光率降低了10%~60%,透氧率提高了10%~15%。结论由于石墨烯比表面积大、刚性高,对LDPE材料的拉伸强度、弹性模量等力学性能有明显改善,同时可提高薄膜透氧率,加深LDPE材料的颜色,降低薄膜透光率。The work aims to discuss the effects of graphene（G） and graphene nanoplatelets（GN） on the mechanical property, color, light transmittance and oxygen permeability of low density polyethylene film, with graphene/low density polyethylene composite packaging materials as the research object. Melt-blending method was used to prepare graphene/LDPE composites with different mass fractions of graphene, and the change in their performances was tested and compared. The addition of G and GN could improve the elasticity modulus of LDPE film by 9%~50%, the transverse and longitudinal tensile strengths by 2%~30% and the oxygen permeability by 10%~15%; and reduce the light transmittance by 10%~60%. Because of the large surface area and high rigidity, graphene can significantly improve the mechanical properties of LDPE material, such as tensile strength and elastic modulus, as well as deepen its color and reduce the light transmittance of the film.

关 键 词：石墨烯 石墨烯微片 低密度聚乙烯 力学性能 颜色 

分 类 号：TB484.9[一般工业技术—包装工程]