两步辐射接枝法制备抗熔滴涤纶织物

发布时间：2018-08-06 13:33

【摘要】：以涤纶(PET)为基材,利用两步γ辐射接枝法在PET织物表面依次引发甲基丙烯酸缩水甘油酯(GMA)/二乙烯苯(DVB)和乙烯基磷酸二甲酯(DMVP)接枝共聚,制备了新型抗熔滴PET织物.接枝率随吸收剂量和单体浓度的增加而增加,随剂量率增加而下降.傅里叶红外(FTIR)、X射线光电子能谱(XPS)和热重分析(TGA)的分析结果表明在PET织物上成功引入目标接枝聚合物.相比PET织物,辐射改性PET织物的拉伸强度以及断裂伸长率均有所提高.通过引入交联网状结构以及促进成炭的含磷接枝聚合物,PET织物的抗熔滴特性得到了明显改善,燃烧过程中平均产生一滴熔滴的时间:PET为3.0 s/n,PET接枝PGMA/DVB后延长为17.0 s/n,而进一步接枝PDMVP后在整个燃烧过程中均不产生熔滴.这种新型的方法有望用于PET织物防护服抗熔滴性能的改善.
[Abstract]:A novel anti-droplet PET fabric was prepared by grafting glycidyl methacrylate (GMA) / divinylbenzene (DVB) and vinyl dimethyl phosphate (DMVP) onto the surface of PET fabric by two-step 纬 -radiation graft copolymerization of polyester (PET) as substrate. The grafting rate increased with the increase of the absorbed dose and monomer concentration, and decreased with the increase of the dose rate. The results of Fourier transform infrared (FTIR) X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA) show that the target grafted polymer is successfully introduced into the PET fabric. Compared with PET fabric, the tensile strength and elongation at break of PET fabric modified by radiation have been improved. The droplet resistance of phosphorus-containing grafted PET fabric was improved by introducing cross-linked network structure and promoting carbonization. In the combustion process, the average droplet formation time is 3. 0 s / n PGMA/DVB grafted with PDMVP and 17. 0 s / n, but no droplet is produced during the combustion process after further grafting of PDMVP. This new method is expected to be used to improve the droplet resistance of PET fabric protective clothing.
【作者单位】：北京大学化学与分子工程学院教育部高分子化学与物理重点实验室北京分子科学国家实验室;
【基金】：国际原子能机构协作项目(项目号RAS1014)资助
【分类号】：TS156

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