交联聚乙烯发泡材料的泡孔和力学性能影响研究
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摘要
主要研究了交联剂过氧化二异丙苯(DCP)和发泡剂4,4-氧代双苯磺酰肼(OBSH)对交联聚乙烯材料结构和力学性能的影响。添加交联剂DCP后,聚乙烯的黏度增加,泡孔尺寸减小,力学性能得到增强;在此基础上减少发泡剂含量,其黏度进一步增加,泡孔尺寸进一步减小,力学性能得到进一步增强。结果表明,DCP质量分数为0. 3%、发泡剂加入量为0. 5%时,制备的聚乙烯材料泡孔尺寸最小,力学性能最优。
The effects of crosslinking agent dicumyl peroxide( DCP) and foaming agent 4, 4-oxybisbenzenesulfonyl hydrazine( OBSH) on the structure and mechanical properties of crosslinking polyethylene foam were investigated. After adding DCP,the viscosity increased,the cellular size decreased and the mechanical properties were improved. According to this condition,when the foaming agent content was reduced,the viscosity could provide a further increase,the cellular size could provide a further decrease and the mechanical properties could provide a further improvement. The results show when the DCP is 0. 3%and the OBSH is 0. 5%,the prepared polyethylene material has the smallest size and the best mechanical properties.
The effects of crosslinking agent dicumyl peroxide( DCP) and foaming agent 4, 4-oxybisbenzenesulfonyl hydrazine( OBSH) on the structure and mechanical properties of crosslinking polyethylene foam were investigated. After adding DCP,the viscosity increased,the cellular size decreased and the mechanical properties were improved. According to this condition,when the foaming agent content was reduced,the viscosity could provide a further increase,the cellular size could provide a further decrease and the mechanical properties could provide a further improvement. The results show when the DCP is 0. 3%and the OBSH is 0. 5%,the prepared polyethylene material has the smallest size and the best mechanical properties.
引文
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[4]徐明宇.高发泡聚乙烯的生产及应用[J].现代塑料加工应用,1993,5(5):62.
[5]王占嘉,赵珊,付海,等.高密度聚乙烯/低密度聚乙烯合金发泡材料泡孔形态演变的研究[J].塑料工业,2017,45(10):77-82.
[6]刘林国,鲁冰雪,张振秀,等.补强填充剂对氯化聚乙烯橡胶发泡材料泡孔结构和性能的影响[J].橡胶工业,2012,59(8):468-472.
[7]ALMANZA O,RODRGUEZ-PREZ M,SAJADE J.The microestructure of polyethylene foams produced by a nitrogen solution process[J].Polymer,2001,42(16):7117-7126.
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[11]梁宏斌,张玉宝,王强,等.辐照交联聚乙烯泡沫的研究[J].化学工程师,2004,105(6):6-8.
[12]刘伟,郝建钢.辐照交联制备氯化聚乙烯发泡材料的研究[J].东华理工大学学报,2013,36(2):96-98.
[13]陈浩堃.聚乙烯化学交联发泡[J].化工时刊,1992,12:2-12.
[14]POONGAVALAPPIL S,SVOBODA P,THERAVALAPPILR,et al.Cross-linking kinetics study and high temperature mechanical properties of ethylene-octene copolymer(EOC)/dicumylperoxide(DCP)system[J].Eur Polym J,2011,47(10):1949-1955.
[15]WANG Z,DING X,ZHAO M,et al.A cooling and twostep depressurization foaming approach for the preparation of modified HDPE foam with complex cellular structure[J].JSupercrit Fluids,2017,125:22-30.
[16]WANG X,HE Z,YANG J,et al.Super toughened immiscible poly(l-lactide)/poly(ethylene vinyl acetate)(PLLA/EVA)blend achieved by in situ cross-linking reaction and carbon nanotubes[J].Composites Part A,2016,91:105-116.
[17]CARDOSO E,SCAGLIUSI S,PARRA D,et al.Gammairradiated cross-linked LDPE foams:Characteristics and properties[J].Radiat Phys Chem,2013,84:170-175.
[18]JURCZUK K,GALESKIA,MORAWIEC J.Effect of poly(tetrafluoroethylene)nanofibers on foaming behavior of linear and branched polypropylenes[J].Eur Polym J,2017,88:171-182.