紫外线稳定剂对户外聚丙烯的影响。

Effects of UV Stabilizers on Polypropylene Outdoors.

作者信息

Brostow Witold, Lu Xinyao, Gencel Osman, Osmanson Allison T

机构信息

Laboratory of Advanced Polymers and Optimized Materials (LAPOM), Department of Materials Science and Engineering, University of North Texas, 3940 North Elm Street, Denton, TX 76207, USA.

Department of Civil Engineering, Faculty of Engineering, Bartin University, 74100 Bartin, Turkey.

出版信息

Materials (Basel). 2020 Apr 1;13(7):1626. doi: 10.3390/ma13071626.

DOI:10.3390/ma13071626

PMID:32244790

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7178429/

Abstract

Hindered amine light stabilizers (HALSs) and nano ZnO were used to stabilize polypropylene (PP) film-based formulations that were exposed to ultraviolet (UV) light for different lengths of time, simulating the harsh outdoor weather of Dallas, Texas, USA. UV doses applied in our laboratory are 121 times larger than the UV dose provided by the sunlight in Texas. 15 different compositions were studied. Tensile behavior, UV transmittance, thermal stability (by thermogravimetric analysis) and dynamic friction of the so exposed PP-based films were determined. Scanning electron micrographs of fracture surfaces were obtained. Nano-ZnO-containing stabilizers impart strong UV resistance to our films. The combination of HALSs and nano-ZnO stabilizers makes the PP films harder-which is important for some PP applications, such as toy manufacturing.

摘要

受阻胺光稳定剂（HALSs）和纳米氧化锌被用于稳定基于聚丙烯（PP）薄膜的配方，这些配方在不同时长下暴露于紫外线（UV）下，模拟美国得克萨斯州达拉斯恶劣的户外天气。我们实验室施加的紫外线剂量比得克萨斯州阳光提供的紫外线剂量大121倍。研究了15种不同的成分。测定了如此暴露的基于PP的薄膜的拉伸行为、紫外线透过率、热稳定性（通过热重分析）和动态摩擦。获得了断裂表面的扫描电子显微照片。含纳米氧化锌的稳定剂赋予我们的薄膜很强的抗紫外线能力。HALSs和纳米氧化锌稳定剂的组合使PP薄膜更硬——这对于一些PP应用（如玩具制造）很重要。