Abstract: The STG/PUF composites were prepared by a one-step method using polyurethane foam (PUF) as the basis of the system, with the presence of polymer shear thickening glue (STG). The influence of isocyanate index (R value) and STG content on microstructure and properties of the resultant STG/PUF composites were investigated. The results showed that the addition of STG enlarges the foam cells and inhibits the foaming process, while nevertheless, improves to a certain extent the composite’s compressive strength as well as remarkably promotes static energy absorption as the STG/PUF sample (R value is 0.75,STG mass fraction is 10%)exhibits an energy absorption capacity of about 12 times larger than that of PUF. In addition, the increasing R value, results in a biphasic (decrease → increase) change of PUF density, and a gradually increasing trend of hardness, but excessive isocyanate content would lead to the foam’s brittleness increment and the mechanical properties deterioration. The foam composite can achieve the optimum mechanical properties when the R value is 0.75 and the mass fraction of STG is 10%.
1 Jiang Weifeng. Study on mechanical properties and mechanism of shear thickening material[D]. Hefei: University of Science and Technology of China,2015(in Chinese). 蒋伟峰.剪切增稠材料的力学性能表征及机理研究[D].合肥:中国科学技术大学,2015. 2 Brown E, Jaeger H M. Shear thickening in concentrated suspensions: Phenomenology, mechanisms and relations to jamming[J]. Reports on Progress in Physics,2014,77(4):046602. 3 Boersma W H, Laven J, Stein H N. Shear thickening (dilatancy) in concentrated dispersions[J]. Aiche Journal,1990,36(3):321. 4 Wang S, Jiang W, Jiang W, et al. Multifunctional polymer compo-site with excellent shear stiffening performance and magnetorheolo-gical effect[J]. Journal of Materials Chemistry C,2014,2(34):7133. 5 Soutrenon M, Michaud V. Impact properties of shear thickening fluid impregnated foams[J]. Smart Materials & Structures,2014,23(3):035022. 6 Ye Fang. Preparation and rheological property of shear thickening fluid based poly(styrene-acrylic acid) nanoparticles[D]. Hefei: University of Science and Technology of China,2014(in Chinese). 叶芳.聚苯乙烯-丙烯酸纳米粒子基剪切增稠液的制备与性能研究[D].合肥:中国科学技术大学,2014. 7 Zhang Zhouling, Liu He, Luo Jianhui, et al. Behavior, mechanism and application of shear thickening behavior of polymer solution[J]. Polymer Bulletin,2012(6):1(in Chinese). 张周玲,刘合,罗健辉,等.高分子溶液剪切增稠行为、机理及应用[J].高分子通报,2012(6):1. 8 Shan Lei, Tian Yu, Meng Yonggang, et al. Influences of medium and temperature on the shear thickening behavior of nano fumed silica colloids[J].Acta Physica Sinica,2015(6):68301(in Chinese). 山磊,田煜,孟永钢,等.分散介质和温度对纳米二氧化硅胶体剪切增稠行为的影响[J].物理学报,2015(6):68301. 9 Jiang Lingling. Application of shear thickening fluid on soft stab-resistant body armor[D].Wuxi:Jiangnan University,2011(in Chinese). 蒋玲玲.剪切增稠液体在柔性防刺材料中的应用研究[D].无锡:江南大学,2011. 10 Sun L L, Xiong D S, Xu C Y. Application of shear thickening fluid in ultra high molecular weight polyethylene fabric[J]. Journal of Applied Polymer Science,2013,129(4):1922. 11 Feng Xinya. Dynamic response of shear thickening fluid and its application in protective structures[D]. Beijing:Beijing Institute of Technology,2014(in Chinese). 冯新娅.剪切增稠流体的动态响应及其在防护结构中的应用[D].北京:北京理工大学,2014. 12 Nagayama T, Fukuoka D, Ito H, et al. Extension of the poiseuille formula for shear thickening materials and application to self-compacting concrete[J]. Applied Rheology,2008,18(6):62705. 13 Khandavalli S, Rothstein J P. The effect of shear-thickening on the stability of slot-die coating[J]. Aiche Journal,2016,62(12):4536. 14 Khandavalli S, Lee J A, Pasquali M, et al. The effect of shear-thickening on liquid transfer from an idealized gravure cell[J]. Journal of Non-Newtonian Fluid Mechanics,2015,221:55. 15 Hu Y, Wang S Q, Jamieson A M. Rheological and rheooptical stu-dies of shear-thickening polyacrylamide solutions[J]. Macromolecules,2002,28(6):1847. 16 Sha Xiaofei, Yu Kejing, Qian Kun. The impact of PEG with diffe-rent molecular weights on rheological behaviors of shear thickening fluid[J]. New Chemical Materials,2013,41(5):100(in Chinese). 沙晓菲,俞科静,钱坤.不同分子量PEG对剪切增稠液体流变性能的影响[J].化工新型材料,2013,41(5):100. 17 Sha Xiaofei. Preparation and properties research of shear thickening fluid[D]. Wuxi: Jiangnan University,2013(in Chinese). 沙晓菲.剪切增稠液体的制备与性能研究[D].无锡:江南大学,2013. 18 Lin N Y, Ness C, Cates M E, et al. Tunable shear thickening in suspensions[J]. Proceedings of the National Academy of Sciences USA,2016,113(39):10774. 19 Brown E, Forman N A, Orellana C S, et al. Generality of shear thicke-ning in dense suspensions[J]. Nature Materials,2010,9(3):220. 20 Landázuri G, Macías E R, García-Sandoval J P, et al. On the modelling of the shear thickening behavior in micellar solutions[J]. Rheologica Acta,2016,55(7):547. 21 Xiang S. A discussion on the application of catalysts used in the refrigerator rigid polyurethane foam[J]. Shanghai Chemical Industry,2002,27:15. 22 Zieleniewska M, Leszczyński M K, Szczepkowski L, et al. Development and applicational evaluation of the rigid polyurethane foam composites with egg shell waste[J]. Polymer Degradation & Stability,2016,132:78. 23 Quintero M W, Escobar J A, Rey A, et al. Flexible polyurethane foams as templates for cellular glass-ceramics[J]. Journal of Mate-rials Processing Technology,2009,209(12):5313. 24 Wang W, Pan Y, Pan H, et al. Synthesis and characterization of MnO2, nanosheets based multilayer coating and applications as a flame retardant for flexible polyurethane foam[J]. Composites Science & Technology,2016,123:212. 25 Nan Yunfei. Synthesis, microphase separation behavior and biome-dical properties of h-HTBN-b-PEG polyurethane block copolymer[D]. Xi’an:Shaanxi Normal University,2010(in Chinese). 南云菲.h-HTBN-b-PEG聚氨酯嵌段共聚物的合成、微相分离行为及其生物医学性能[D].西安:陕西师范大学,2010. 26 Oppon C, Hackney P M, Shyha I, et al. Effect of varying mixing ratios and pre-heat temperature on the mechanical properties of polyurethane (PU) foam[J]. Procedia Engineering,2015,132:701. 27 朱吕民,刘益军.聚氨酯泡沫塑料[M].北京:化学工业出版社,2005. 28 刘厚钧.聚氨酯弹性体手册[M].北京:化学工业出版社,2012. 29 Wang S, Xuan S, Wang Y, et al. Stretchable polyurethane sponge scaffold strengthened shear stiffening polymer and its enhanced safe-guarding performance[J]. ACS Applied Materials & Interfaces,2016,8(7):4946. 30 Cleet C. Isocyanates in flexible polyurethane foams[J]. Bulletin of Environmental Contamination & Toxicology,2003,70(2):0328. 31 Hyun K, Sang-Bum K, Cheol K Y. Effects of isocyanate index and aging on the physical properties of polyurethane foams[J]. Polymer Korea,2005,29(5):457. 32 Wen Zhenguang, Xu Liang,Cheng Jue. Effect of the viscosity of expandable phenolic resin on the formation process and performance of phenolic/polyurethane foam[J].Beijing University of Chemical Technology(Natural Science Edition),2011,38(2):52(in Chinese). 文振广,许亮,程珏.酚醛树脂黏度对酚醛/聚氨酯双组份泡沫成型和性能的影响[J].北京化工大学学报(自然科学版),2011,38(2):52. 33 Sun Xiaowei,Zou Wei,Du Zhongjie, et al. Rheological properties of polyurethane adhesive in curing process[J]. Polymer Materials Science & Engineering,2013,29(3):31(in Chinese). 孙晓微,邹威,杜中杰,等.聚氨酯胶粘剂固化反应对其流变性能的影响[J].高分子材料科学与工程,2013,29(3):31. 34 Hu Shisheng, Liu Jianfei,Wang Wu. Evaluation of cushioning pro-perties and energy-absorption capability of rigid polyurethane foam[J].Explosion and Shock Waves,1998,18(1):42(in Chinese). 胡时胜,刘剑飞,王悟.硬质聚氨酯泡沫塑料的缓冲吸能特性评估[J].爆炸与冲击,1998,18(1):42. 35 Deb A, Shivakumar N D. An experimental study on energy absorption behavior of polyurethane foams[J]. Journal of Reinforced Plastics & Composites,2009,28(24):3021. 36 Miltz J, Gruenbaum G. Evaluation of cushioning properties of plastic foams from compressive measurements[J]. Polymer Engineering & Science,1981,21(15):1010.
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2018, Vol. 32 
