| HDPE紫外辐照改性及其与PVA共混体系的力学性能 |
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| 引用本文： | 吴石山,徐僖. HDPE紫外辐照改性及其与PVA共混体系的力学性能[J]. 材料研究学报, 2001, 15(6): 619-622 |
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| 作者姓名： | 吴石山 徐僖 |
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| 作者单位： | 四川大学高分子材料工程国家重点实验室 |
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| 基金项目： | 国家重点基础研究专项经费资助项目G1999064809，福特－中国研究与发展基金资助项目9715407． |
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| 摘 要： | 研究了紫外辐照对高密度聚乙烯（HDPE）结构与性能以及HDPE/聚乙烯醇（PVA）短纤维共混体系力学性能的影响。结果表明，在空气中通过紫外辐照可在HDPE分子链上引入C=0、C-0含氧基因，使HDPE分子量下降、熔点降低、结晶度增大并产生凝胶。以辐照HDPE为增容剂，增强了HDPE与PVA相界面的相互作用，共混物的拉伸屈服强度和缺口冲击强度得到提高。
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| 关 键 词： | 紫外辐照 HDPE HDPE／PVA共混物 力学性能 改性 聚乙烯醇 增容作用 高密度聚乙烯 结构 |
| 文章编号： | 1005-3003(2001)06-0619-04 |
| 修稿时间： | 2000-08-28 |
ULTRAVIOLET IRRADIATION MODIFICATION OF HDPE AND MECHANICAL PROPERTIES OF ITS BLEND WITH PVA |
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| WU Shishan,XU Xi. ULTRAVIOLET IRRADIATION MODIFICATION OF HDPE AND MECHANICAL PROPERTIES OF ITS BLEND WITH PVA[J]. Chinese Journal of Materials Research, 2001, 15(6): 619-622 |
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| Authors: | WU Shishan XU Xi |
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| Abstract: | The effect of ultraviolet(UV) irradiation on the molecular structure of HDPE and mechanical properties of its blend with polyvinyl alcohol(PVA) short fiber have been investigated. The experimental results show that during UV irradiation in air, C=O and C-O oxygen-containing groups are introduced onto HDPE molecular chain, the molecular mass and melting temperature of HDPE decreased, the crystallinity is increased, it is crosslinked, and the Young's modulus and tensile yield strength increased, its elongation at break and notched lzod impact strength are decreased. The irradiated HDPE behaved as compatibilizer in HDPE/PVA, ameliorates interface bonding between HDPE and PVA, adding 8.3% functionalized HDPE, the tensile yield strength and notched lzod impact strength of the blend are increased from 37.7MPa to 43.7MPa and 460J/m to 520J/m, respectively. |
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| Keywords: | ultraviolet irradiation HDPE HDPE/PVA blend |
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