
1. (中国科学院上海应用物理研究所 嘉定园区 ),上海,201800
[ "李建喜,男,1983年10月出生,2009年于许昌学院获得学士学位,现为中国科学院上海应用物理研究所博士研究生" ]
[ "李林繁,男,副研究员 E-mail:zhangcong@sinap.ac.cn" ]
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李建喜, 张 聪, 陈 涛, 等. 接枝型耐紫外线老化乙烯-乙酸乙烯酯共聚物的制备及其性能研究[J]. 辐射研究与辐射工艺学报, 2014,32(6):6-060302.
李建喜, 张 聪, 陈 涛, 等. 接枝型耐紫外线老化乙烯-乙酸乙烯酯共聚物的制备及其性能研究[J]. 辐射研究与辐射工艺学报, 2014,32(6):6-060302. DOI: 10.11889/j.1000-3436.2014.rrj.32.060302.
将4-丙烯氧基,2-羟基二苯甲酮(AHB)作为紫外光吸收剂与乙烯-乙酸乙烯酯共聚物(EVA)以不同比例共混后通过平板硫化机压成1 mm厚的的片材,空气氛围中,以4.4 × 105 kGy•h−1的剂量率对其进行辐照,将AHB以化学键方式接枝固定在EVA中。采用GB/T 1040-2006方法考察共混片材的机械性能,FT-IR光谱表征共混膜中AHB的存在,紫外光谱考察紫外线吸收性能,光学显微镜观察片材拉断后的截面形貌。结果表明,随AHB的含量从0 phr增加至2 phr,材料的断裂伸长率从586%上升至772%;同时抗张强度从32.1 MPa下降至22.4 MPa;添加1份(每100份聚合物)紫外吸收剂的EVA抗紫外老化性能显著优于未添加的样品。
4-Allyloxy-2-hydroxybenzophenone(AHB), the grafting type ultraviolet absorber was blended with EVA by melting extrusion. After mixing, the composites were hot-pressed to sheets with a thickness of 1 mm. And then the sheets were irradiated by electron-beam for 100 kGy at dose rate 4.4 × 105 kGy•h−1. This study focuses on AHB effects on the mechanical properties according to GB/T 1040-2006, and resistance to ultraviolet aging properties of the cable material by FT-IR and UV. The results showed that the breaking elongation of the material increased from 586% to 772%, while the tensile strength decreased simultaneously, from 32.1 MPa to 22.4 MPa, with the raising of AHB content from 0% to 2%. The performance of EVA with 1 phr ultraviolet absorber is significantly superior to the pristine on the mechanical properties under UV- irradiation at different times.Cited
乙烯-乙酸乙烯酯共聚物(EVA)4-丙烯氧基-2-羟基二苯甲酮(AHB)紫外吸收固相接枝电子束辐射
Ethylene-vinyl acetate copolymer4-Allyloxy-2-hydroxybenzophenoneUltraviolet absorptionSolid phase graftElectron beam radiation
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