中空玻璃微珠改性PP泡沫复合材料的发泡效果和力学性能
Foaming Effect and Mechanical Properties of Polypropylene Foamed Composite Modified by Hollow Glass Bead
摘 要
先用硅烷偶联剂(KH550)对中空玻璃微珠(HGB)进行表面预处理, 然后采用型内二次发泡工艺制备了中空玻璃微珠(HGB)改性聚丙烯(PP)泡沫复合材料, 研究了HGB质量分数对泡沫复合材料发泡效果、界面结合性能及力学性能的影响。结果表明: HGB的加入能显著改善发泡效果, 当HGB质量分数为15%时, 能够获得泡孔分布均匀、泡孔直径细小的闭孔结构,泡沫复合材料的力学性能最佳, 冲击韧度、抗弯强度和压缩强度分别为25.6 kJ·m-2, 11.2 MPa和17.6 MPa; KH550表面预处理增强了HGB与PP基体之间的界面结合性能, 且对泡壁强度起到了显著增强效果。
中空玻璃微珠
聚丙烯
界面结合
力学性能
foamed composite
hollow glass bead(HGB)
polypropylene
interfacial bonding
mechanical property
Abstract
Silane coupling agent was used to pre-treate hollow glass bead, and then to prepare a polypropylene(PP) foamed composite modified by hollow glass bead (HGB) by post-foaming process in designed dies. The effects of the mass fraction of HGB on foaming effect, interfacial bonding and mechanical properties of the foamed composites were studied. The results show that adding HGB modified foaming effction dramaticlly. When the mass fraction of HGB was 15wt%, a close-cell structure with uniform cell distribution and fine cell size was obtained, and the mechanical properties of the foamed composite was best, and its impact toughness, flexural strength and compressive strength was 25.6 kJ·m-2, 11.2 MPa和17.6 MPa, respectively. The surface pre-treatment by KH550 enhanced interfacial bonding between HGB and PP matrix and strength of cell wall signally.
中图分类号 TQ328.9
所属栏目 新材料 新工艺
基金项目 江苏省自然科学基金资助项目(BK2009379); 南京航空航天大学基本科研业务费专项科研项目(1006-56XNA12069); 南京航空航天大学引进人才基金资助项目(1006-909308)
收稿日期 2012/11/26
修改稿日期 2013/10/16
网络出版日期
作者单位点击查看
备注李少华(1987-), 男, 河南周口人, 硕士研究生。
引用该论文: LI Shao-hua,LI Zi-quan,LIU Jin-song,YANG Ji-nian,XU Qi. Foaming Effect and Mechanical Properties of Polypropylene Foamed Composite Modified by Hollow Glass Bead[J]. Materials for mechancial engineering, 2014, 38(1): 42～46
李少华,李子全,刘劲松,杨继年,许奇. 中空玻璃微珠改性PP泡沫复合材料的发泡效果和力学性能[J]. 机械工程材料, 2014, 38(1): 42～46
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【4】YANG Ji-nian, LI Zi-quan, LIU Jin-song. Effects of compatilizers on the cellular structures, interfacial morphologies and mechanical properties of PP foam composites［J］.E-Polymers,2011,76:1-10.
【5】ANTUNES M, REALINHO V, MARTIACUTENEZ AB, et al. Heat transfer of mineral-foiled polypropylene foams［J］.Defect and Diffusion Forum,2010,297/301:990-995.
【6】杨继年,李子全,王凌岩,等.PP-g-MAH改性SGF+POE/FPP复合材料的制备及性能［J］.机械工程材料,2010,34(9):46-49.
【7】王宝春,郑威,袁秀梅.泡沫塑料研究进展［J］.工程塑料应用,2009,37(10):77-82.
【8】GUPTA N, WOLDESENBET E, MENSAH P. Compression properties of syntactic foams: effect of cenosphere radius ratio and specimen aspect ratio［J］.Composites Part a-Applied Science and Manufacturing,2004,35(1):103-111.
【9】CHALIVENDAR V B, SHUKLA A, BOSE A, et al. Processing and mechanical characterization of lightweight polyurethane composites［J］.Journal of Materials Science,2003,38(8):1631-1643.
【10】卢子兴,邹波,李忠明,等.空心微珠填充聚氨酯泡沫塑料的力学性能［J］.复合材料学报,2008,25(6):175-180.
【11】姜鑫,杨振国.玻璃微珠表面改性方法及其对硬质聚氨酯泡沫性能的影响［J］.复旦学报: 自然科学版,2007,46(3):297-301.
【12】SATAPATHY B K, DAS A, PATNAIK A. Ductile-to-brittle transition in cenosphere-filled polypropylene composites［J］.Journal of Materials Science,2011,46(6):1963-1974.
【13】DAS A, SATAPATHY B K. Structural, thermal, mechanical and dynamic mechanical properties of cenosphere filled polypropylene composites［J］.Materials & Design,2011,32(3):1477-1484.
【14】李子全,欧阳密,杨继年,等.共混物对二次发泡聚丙烯的发泡效果和力学性能的影响［J］.南京航空航天大学学报,2006,38(3):378-382.
【15】OKAMOTO M, NAM P H, MAITI P, et al. Biaxial flow-induced alignment of silicate layers in polypropy-lene/clay nanocomposite foam ［J］.Nano Letters,2001,1(9):503-505.
【16】丁雪佳,李亮,余鼎声,等.空心玻璃微珠填充PP复合材料的结构与性能研究［J］.中国塑料,2002,16(12):43-46.
【17】周秋明,王建华,田春蓉,等.空心玻璃微珠复合聚氨酯泡沫塑料的泡孔结构与性能［J］.聚氨酯工业,2002,17(2):13-15.
【18】DEMJN Z, PUKNSZKY B, NAGY J R J. Possible coupling reactions of functional silaes and polypropylene［J］.Polymer,1999,40(7):1763-1773.
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