商业化热弹性聚氨酯和吸收剂THUV-328复合体系拉伸性能初探
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摘要
为满足寒地低阻尼聚氨酯材料运动器材市场需求,提出在耐低温商业化聚氨酯WHT-8185中添加大量紫外线吸收剂THUV-328来改善其性能方案,采用溶液法制备了不同THUV-328比例的耐低温、低阻尼聚氨酯基复合材料。借助SEM及拉伸试验等表征手段对其断口形貌及拉伸性能进行了研究。结果表明,低含量下小分子THUV-328与聚氨酯界面固溶较好,聚氨酯完整性被破坏;高含量下小分子析出量加大,基体出现断层、孔洞、裂纹等缺陷。拉伸实验表明,小变形条件下,THUV-328具有增强复合材料弹性模量和刚度作用;大变形条件下,小分子比率<1时,复合材料塑性行为增强,> 1时,材料韧性下降,易断裂。该研究拓展了聚氨酯基复合材料的应用领域,为新型寒地低阻尼材料的研发提供了新思路。
In order to meet the market demand of low-damping polyurethane sports equipment in cold regions,this paper proposes to add a large amount of UV absorber THUV-328 to low-temperature resistant commercial polyurethane WHT-8185 to improve its performance. Low-temperature resistant and low-damping polyurethane-based composites with different THUV-328 ratios were prepared by solution method. The fracture morphology and tensile properties were studied by means of SEM and tensile test. The results showed that the small molecule THUV-328 had good solid solution at the interface with polyurethane at low content,and the integrity of polyurethane was destroyed. At high content,the precipitation of small molecules is increased,and defects such as faults,holes and cracks appear in the matrix. Tensile tests show that THUV-328 can enhance the elastic modulus and stiffness of composites under small deformation. Under the condition of large deformation,the plastic behavior of the composite increases when the ratio of small molecules is less than 1,while the toughness of the composite decreases and it is easy to fracture when the ratio is greater than 1. This research expands the application field of polyurethane matrix composites and provides a new idea for the research and development of new low damping materials in cold regions.
In order to meet the market demand of low-damping polyurethane sports equipment in cold regions,this paper proposes to add a large amount of UV absorber THUV-328 to low-temperature resistant commercial polyurethane WHT-8185 to improve its performance. Low-temperature resistant and low-damping polyurethane-based composites with different THUV-328 ratios were prepared by solution method. The fracture morphology and tensile properties were studied by means of SEM and tensile test. The results showed that the small molecule THUV-328 had good solid solution at the interface with polyurethane at low content,and the integrity of polyurethane was destroyed. At high content,the precipitation of small molecules is increased,and defects such as faults,holes and cracks appear in the matrix. Tensile tests show that THUV-328 can enhance the elastic modulus and stiffness of composites under small deformation. Under the condition of large deformation,the plastic behavior of the composite increases when the ratio of small molecules is less than 1,while the toughness of the composite decreases and it is easy to fracture when the ratio is greater than 1. This research expands the application field of polyurethane matrix composites and provides a new idea for the research and development of new low damping materials in cold regions.
引文
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[16] Wu C,Otani Y,Namiki N,et al. Dynamic properties of an organic hybrid of chlorinated polyethylene and hindered phenol compound[J]. Journal of Applied Polymer Science,2001,82(7):1788-1793.
[17] Fang Qinghong,Song Bo,Tee Tiam-Ting,et al. Investigation of dynamic characteristics of nano-size calcium carbonate added in natural rubber vulcanizate[J]. Composites Part B:Engineering,2014,60:561-567.
[18] Payne A R,Whittaker R E. Low strain dynamic properties of filled rubbers[J]. Rubber Chemistry and Technology,1971,44(2):440-478.
[19] Xiao Daling,Zhao Xiuying,Xiang Ping,et al. Structure and properties of hindered phenol AO-80/polyetherbased polyurethane thermoplastic elastomer composites[J]. China Synthetic Rubber Industry,2009,32(1):12-16.
[20] Chang Jiang,Tian Bing,Li Li,et al. Microstructure and damping property of polyurethane composites hybridized with ultraviolet absorbents[J]. Advances in Materials Science and Engineering,2018,9624701:1-9.
[2] Chun B C,Cho T K,Chong M H,et al. Structure-property relationship of shape memory polyurethane cross-linked by a polyethylene glycol spacer between polyurethane chains[J]. Journal of Materials Science,2007,42(21):9045-9056.
[3] Li W L,Liu J L,Hao C W,et al. Interaction of thermoplastic polyurethane with polyamide 1212 and its influence on the thermal and mechanical properties of TPU/PAl212 blends[J]. Polymer Engineering and Science,2008,48(2):249-256.
[4] Buskens P,Wouters M,Rentrop C,et al. A brief review of environmentally benign antifouling and foul-release coatings for marine applications[J]. J Coat Technol Res,2013,10(1):29-36.
[5] Rocco J A F F,Lima J E S,Lourenco V L,et al. Dynamic mechanical properties for polyurethane elastomers applied in elastomeric mortar[J]. Journal of Applied Polymer Science,2012,126(4):1461-1467.
[6] Guo Yanhong,Zhao Xiaoping,Chen Rongrong,et al. Modification of HTPB polyurethane damping material by organic small molecule DZ[J]. Material Review:Research Article,2009,23(3):5-7.
[7] Guo Yanhong,Song Chuan,Chen Rongrong,et al. Study on modification by DZ on polyether type polyurethane damping material[J]. Material Review,2009,23:423-426.
[8] Qin C L,Cai W M,Cai J,et al. Damping properties and morphology of polyurethane/vinyl ester resin interpenetrating polymer network[J]. Mater Chem Phys,2004,85:402-409.
[9] Pashupati Pokharel,Sunwoong Choi,Dai Soo Lee. The effect of hard segment length on the thermal and mechanical properties of polyurethane/graphene oxide nanocomposites[J]. Composites:Part A,2015(69):168-177.
[10] Nakamura Makito,Aoki Yasutomo,Enna Genichirou,et al. Polyurethane damping material[J]. Journal of Elastomers and Plastics,2015,47(6):515-522.
[11] Thirumal M,Khastgir D,Singha N K,et al. Mechanical,morphological and thermal properties of rigid polyurethane foam:Effect of the filler[J]. Cellular Polymers,2007,26(4):245-259.
[12] Yu Guiying,Li Xiaobing,Luo Chao. Fabrication of polyurethane/carbon nanotubes composites by solution-blending method[J]. Journal of Nanchang University(Engineering&Technology),2012,34(2):120-123.
[13] Jeno Borda,Sandor Keki,Istvanne Rathy,et al. Novel polyurethane elastomer continuous carbon fiber composites:Preparation and characterization[J]. Journal of Applied Polymer Science,2007,103:287-292.
[14] Tang Q,Ai Q,Yang R,et al. Effect of thermal-oxidative aging on the microstructure of thermoplastic poly(ether-urethane)[J]. Polymer Science Series A,2014,56(4):441-449.
[15] Foks J,Janik H,Russo R,et a1. Morphology and thermal poperties of polyurethanes prepared under different conditions[J]. European Polymer Journal,1989,25(1):31-37.
[16] Wu C,Otani Y,Namiki N,et al. Dynamic properties of an organic hybrid of chlorinated polyethylene and hindered phenol compound[J]. Journal of Applied Polymer Science,2001,82(7):1788-1793.
[17] Fang Qinghong,Song Bo,Tee Tiam-Ting,et al. Investigation of dynamic characteristics of nano-size calcium carbonate added in natural rubber vulcanizate[J]. Composites Part B:Engineering,2014,60:561-567.
[18] Payne A R,Whittaker R E. Low strain dynamic properties of filled rubbers[J]. Rubber Chemistry and Technology,1971,44(2):440-478.
[19] Xiao Daling,Zhao Xiuying,Xiang Ping,et al. Structure and properties of hindered phenol AO-80/polyetherbased polyurethane thermoplastic elastomer composites[J]. China Synthetic Rubber Industry,2009,32(1):12-16.
[20] Chang Jiang,Tian Bing,Li Li,et al. Microstructure and damping property of polyurethane composites hybridized with ultraviolet absorbents[J]. Advances in Materials Science and Engineering,2018,9624701:1-9.