The Ageing of Polypropylene Geotextiles under Outdoor Environment
Geotextiles may be expected to survive a number of environmentally related challenges with regards to durability. To evaluate the ageing performances and predict the service life of polypropylene (PP) geotextiles, the ageing mechanism of PP geosynthetics is briefly explained and anti-ageing protective methods are presented. Outdoor atmospheric tests are provided in Shanghai to evaluate the effects of HALS (hindered amine light stabilizers) and the protective function of polyester fibers which cover on the surface of PP woven fabrics by means of needle-punch process. The samples were prepared from six different kind PP geotextiles and tensile strength was tested in laboratory. Furthermore, the UV-irradiation density of outdoor aging field is monitored to testify the influence of UV-irradiation on the ageing of PP geotextiles. After one year of outdoor exposure test, the results of tensile strength of samples show that HALS can increase the lifetime of PP geotextiles greatly. And also, polyester fibers needle punched on the surface of PP fabrics can absorb most UV irradiation to retard the ageing of PP geotextiles.
Polypropylene Outdoor exposure Tensile strength UV-irradiation Anti-ageing
Xudong Yang Wencan Qiu Xin Ding Ting Chen
College of Textiles, Donghua University, Shanghai, 201620, China College of Textile and Clothing Engineering, Soochow University, Jiangsu, 215021, China
国际会议
上海
英文
45-48
2009-05-27（万方平台首次上网日期，不代表论文的发表时间）