张兴祥
主要研究方向为事功能材料、高性能材料及纳米材料, 特别是在相变储能材料和聚合物功能化碳纳米管及高性能纤维的制备方面的研究较多。
个性化签名
- 姓名:张兴祥
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学术头衔:
博士生导师
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学科领域:
材料科学
- 研究兴趣:主要研究方向为事功能材料、高性能材料及纳米材料, 特别是在相变储能材料和聚合物功能化碳纳米管及高性能纤维的制备方面的研究较多。
张兴祥, 男, 1962年生于山东省莱州市, 香港理工大学博士, 研究员, 材料科学专业博士生导师, 生物医学工程专业硕士生导师, 改性与功能纤维天津市重点实验室副主任。主要研究方向为事功能材料、高性能材料及纳米材料, 特别是在相变储能材料和聚合物功能化碳纳米管及高性能纤维的制备方面的研究较多。
在相变材料纳胶囊、微胶囊和蓄热调温纤维方面的研究工作达到国际先进水平。1995年提出了“双向调温织物”的概念-在纤维成型过程中引入具有热能吸收、储存和释放功能的相变材料制备蓄热调温纤维。 “蓄热调温纤维及材料的研究”被列入国家“九五”重点科研计划, 该项目在采用增粘剂改善相变材料可纺性方面取得了显著成果, 工艺技术路线新颖、先进, 填补国内空白, 整体水平达到国际先进水平。“光热转换温度调节纤维的研制与性能”获得天津市(重点)自然科学基金资助, 项目工艺技术路线新颖、先进, 研究结论具有创新性, 该项研究在改善相变材料微胶囊耐热性方面达到国际领先水平。“近红外线吸收蓄热调温纤维的研制与性能”获得国家自然科学基金资助, 并于2004年8月被批准结项。2005年完成天津市重点科技攻关项目“防非典医务人员恒温服的研究与开发”, 该项目工艺技术路线新颖、先进、产品具有实用性。该项研究的工艺和产品达到国际先进水平。在系统研究多种相变材料性能特点的基础上, 实现了相变材料的纳胶囊化和微胶囊化, 制备出了调温丙纶和阻燃调温腈氯纶。相变材料微胶囊在调温纤维、循环制冷液、红外隐身涂料、精密仪器隔热和节能建材等方面有良好的应用前景。
2002年以来主持承担完成国家自然科学基金、国防科工委军工配套科研计划、天津市重点科技攻关计划项目等7项, 其中“相变材料纳胶囊、微胶囊和调温纤维及纺织品的研制”获天津市2006年技术发明二等奖(1), “多功能微粉和纤维的研究与开发” 获中国纺织工业协会2006年科技进步二等奖(3), “蓄热调温纤维及材料的研究”获2005年中国纺织工业协会科技进步三等奖(1)。香港桑麻基金会桑麻纺织杰出青年学者、桑麻纺织科技奖获得者。已获发明专利13项, 实用新型专利3项, 发表SCI和EI检索论文20余篇。
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17
张兴祥, Na Han, Xing-Xiang Zhang, Xue-Chen Wang
Journal of Applied Polymer Science DOI 10. 1002,-0001,():
-1年11月30日
The polyacrylonitrile-methyl acrylate (AN/MA mole ratio 100/0-70/30) copolymers and copolymers (AN/MA mole ratio 85/15) containing up to 40wt% of microencapsulated n-octadecane (MicroPCMs) are synthesized in water. The MicroPCMs were incorporated at the step of polymerization. The effect of the MA mole ratio and MicroPCMs content on structures and properties of the copolymers were studied by using Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (1H NMR), scanning electronic microscope (SEM), differential scanning calorimetry (DSC), thermogravimetry analysis (TG), gel permeation chromatography (GPC), and X-ray diffraction (XRD). The feeding ratio agreed well with the composition of the AN/MA copolymers. The copolymers are synthesized in the presence of MicroPCMs. The melting point moves to lower temperature (206℃), while the decomposition temperature moves to higher temperature (309℃) with increasing of the MA mole ratio and microcapsules content. The number–average molecular weight of the copolymer is ~30,000. The crystallinity of the copolymer decreases with increasing of the MA mole ratio and microcapsules content.
Structure-property relations, thermal properties, melting point, supramolecular structures, differential scanning calorimetry (, DSC),
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【期刊论文】Acrylonitrile-Methyl Methacrylate Copolymer Films Containing Microencapsulated n-Octadecane
张兴祥, Li Jun, Han Na, Zhang Xing-xiang
,-0001,():
-1年11月30日
Acrylonitrile-Methyl methacrylate copolymer was synthesized in aqueous solution by Redox. The copolymer was mixed with 10-40wt% of microencapsulated n-octadecane (MicroPCMs) in water. Copolymer films containing MicroPCMs were cast at room temperature. The copolymer of acrylonitrile-methyl methacrylate and the copolymer films containing MicroPCMs were characterized by using Fourier Transform Infrared Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC), Thermogravimetric Analyzer (TG), X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM), etc. The microcapsules in the films are evenly distributed in the copolymer matrix. The heat-absorbing temperatures and heat-evolving temperatures of the films are almost the same as that of the MicroPCMs, respectively. The heat-absorbing temperatures increase slightly with the contents of MicroPCMs increasing. In addition, the enthalpy efficiency of MicroPCMs rises with the contents of MicroPCMs increasing. The crystallinity of the film increases with the contents of MicroPCMs increasing.
Acrylonitrile-methyl methacrylate copolymer, MicroPCMs, film, heat storage
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张兴祥, 韩娜, 王学晨
高分子材料科学与工程2006年11月第22卷第6期/POLYMER MATERIALS SCIENCE AND ENGINEERING Nov., 2006, Vol. 22, No. 6,-0001,():
-1年11月30日
采用水相沉淀法制备了舍有 0~30mol 丙烯酸甲酯(MA)的丙烯腈(AN)-丙烯酸甲酯共聚物。采用红外光谱 (FT-IR)、差热分析(DSC)、x射线衍射(XRD)、核磁共振(NMR)等方法时聚合产物进行了分析。聚合产物的组成比与投料比相近,随MA比例的增加,分解温度升高,玻璃化转变温度(Tg )降低。舍MA30mol的共聚物的分解温度为338.8 LC,而熔融温度任为188.8℃,由于第二单体MA 的加入。使得共聚物的熔点降低至分解温度之前,这为改性聚丙烯腈的无增塑熔融纺丝提供了可能性。
丙烯腈, 丙烯酸甲酯, 共聚, 熔融
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张兴祥, 孟庆杰, 王学晨, 牛建津
硅酸盐学报2006年4月第34卷第4期/JOURNAL OF THE CHINESE CERAMIC SOCIETY April, 2006, Vol. 34, No. 4,-0001,():
-1年11月30日
系统研究了不同结构的电气石微粉因其自发极性和表面吸附与盐酸、NaOH溶液作用对溶液 p H值、电导率的影响。用粒径分析仪、扫描电子显微镜、电子能谱仪、X 射线衍射仪和红外光谱仪分析不同产地电气石的粒径尺寸、化学成分、晶型结构及其作用原理。用碘量法测定电气石微粉与碱性溶液作用后溶液溶氧量的变化。结果表明:不同产地的电气石微粉由于结构不同产生性能上的差异,它们对溶液pH值、电导率和溶氧量的影响不同。在酸性条件下,内蒙古电气石微粉的作用效果最佳,溶液的pH值由3升至9 。在碱性条件下,河北电气石微粉作用效果最好,溶液pH值由 12降至10。电气石微粉可以大幅度提高水的溶氧量。溶液的溶氧量与电气石组分中氧元素的含量有关,氧元素含量越高,溶液中的溶氧量越大。
电气石, 元素组成, 酸碱溶液:pH值t溶氧量
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张兴祥, Xing-Xiang Zhang, Xue-Chen Wang, Xiao-Ming Tao, Kit-Lun Yick
Textile Research Journal Vol. 76 (5): 351-359,-0001,():
-1年11月30日
Thermo-regulated polyacrylonitrile-vinylidene chloride (PAN/VDC) fibers containing 4-40wt.% of micro phase-change materials (microPCMs) were wet-spun. In this study, fibers containing less than 30wt.% of microencapsulated n-octadecane were spun smoothly. The structures and properties of the fibers were investigated by using Fourier transform infrared, scanning electron microscopy, differential scanning calorimetry, wide-angle X-ray diffraction, dynamic mechanical analysis and thermogravimetric analysis, etc. The microcapsules were intact and evenly distributed inside the polymer matrix. The tensile strengths of the fibers with titers in the range of 1.9 to 10.9 dtex were 0.7 to 2.0 cN/dtex. The elongation of the fibers was approximately 7%. The heat-absorbing and heat-evolving temperatures of the fibers increased slightly with the increase of the content of microPCMs. The enthalpy of melting or enthalpy of crystallization of the fiber containing 30 wt.% of microPCMs was approximately 30 J/g, and the enthalpy of melting or enthalpy of crystallization increased steadily as the content of microPCMs increased. The modulus of the fiber decreased with the increase in the amount of microPCMs in the fiber. The glass transition temperature of the fiber was 89-108
thermo-regulated fiber, microPCMs, wet-spun, modacrylic fiber, property
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【期刊论文】Structures and properties of thermo-regulated knitted fabrics
张兴祥, Zhang Xing-xiang, , Li Yi, Tao Xiao-ming, Yick Kit-lun
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-1年11月30日
Microencapsulated n-octadecane was coated on the surface of cotton and cotton/polypropylene (60:40) knitted fabrics to produce thermo-regulated textiles. The structures, morphologies, phase change properties, heat flux, softness and smoothness were studied using SEM, DSC, Thermo Lab II and Smart Hand Tester, etc. It is observed that the microcapsules are inserted into the loops and adhered on the surface of fibre. The thermo-regulated knitted fabrics absorb and release 8-20J/g of heat energy at approximately 32℃ and 17℃ respectively. The thermal conductivity of the coated fabric is found to be higher than that of the untreated fabric; however, the difference is small. The measured maximum heat absorption rate of the coated fabric is also slightly higher than that of untreated fabric. The heat flux of the fabrics is contributed by three factors: namely cold textile touches the hot plate and absorbs heat; heat conducts from the hot plate to the cold plate; and phase change material absorbs heat when the fabric touches the hot plate. The heat flux of MicroPCMs coated fabric is significantly higher than that of the control. The softness and smoothness of the fabric decrease after coating; however, they get better after washing with water.
Cotton/, polypropylene fabric, Heat flux, MicroPCMs, Phase change material, Thermo-regulated fabric
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【期刊论文】Energy storage polymer/MicroPCMs blended chips and thermo-regulated fibers
张兴祥, X. X. ZHANG, X. C. WANG, X. M. TAO, K. L. YICK
JOURNAL OF MATERIALS SCIENCE 40 (2005) 3729-3734,-0001,():
-1年11月30日
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【期刊论文】Expansion Space and Thermal Stability of Microencapsulated n-Octadecane
张兴祥, X. X. Zhang, , X. M. Tao, K. L. Yick, Y. F. Fan
Journal of Applied Polymer Science, Vol. 97, 390-396 (2005),-0001,():
-1年11月30日
5.0–50.0 vt% of cyclohexane was mixed with 95.0–50.0 vt% of n-octadecane as the oil-phase during the emulsion process in the in situ polymerization of melamine-formaldehyde. By heat-treating the microcapsules in an oven at 100°C, the cyclohexane was removed and expansion space was formed inside the microcapsules. The microcapsules were characterized by using FTIR, SEM, DSC, TGA, and gas chromatography. When the microcapsules are heattreated at temperatures higher than 180°C, Tm, △Hm, Tc, and △Hc of the microcapsules decrease. The attenuation of enthalpy of the microcapsules containing expansion space is obviously lower than that of the control sample, however. The permeability of the microcapsule shell decreases with the increase of cyclohexane content. There is a maximum between the thermal stabilities of the microcapsules and the cyclohexane contents. The microcapsules synthesized with 30.0-40.0vt% of cyclohexane have the highest thermal stabilities, with 230°C and 289°C in air and nitrogen atmosphere, respectively. The thermal stable temperatures are approximately 67°C and 102°C higher than that of the control sample, respectively. The expansion space inside the microcapsules allows the n-octadecane to expand in the temperature rising process and exert lower pressure to the shell, therefore keeping the shell intact and increasing the thermal stabilities of the microcapsules.
Microencapsulation, structure-property relations, microcapsule, thermal property, expansion space
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【期刊论文】Crystallization and prevention of supercooling of microencapsulated n-alkanes
张兴祥, Xing-xiang Zhang , , Yao-feng Fan, Xiao-ming Tao, Kit-lun Yick
X. -x. Zhang et al. Journal of Colloid and Interface Science 281 (2005) 299-306,-0001,():
-1年11月30日
Microencapsulated n-alkanes (n-octadecane, n-nonadecane, and n-eicosane) were synthesized by in situ polymerization using urea-melamine-formaldehyde polymer as shells. Microcapsules 5.0 and 10.0 wt% of 1-tetradecanol, paraffin, and 1-octadecanol were used as nucleating agents. The fabrication was characterized using Fourier transform infrared, light microscopy, and scanning electron microscopy. The crystallization and prevention of supercooling of the microcapsules are studied using differential scanning calorimetry (DSC) and wide-angle X-ray diffraction. The crystal system of the microencapsulated n-alkane is the same as that of the bulk. The enthalpies of the microcapsules containing 70wt% n-alkanes are approximately 160J/g. The melting temperature of the n-alkanes in the microcapsule is the same as that in the bulk. There are multiple peaks on the DSC cooling curves that are attributed to liquid–rotator, rotator–crystal, and liquid–crystal transitions. The DSC cooling behavior of microencapsulated n-octadecane is affected by the average diameters. The measured maximum degree of supercooling of the microencapsulated n-octadecane is approximately 26.0◦C at a heating and cooling rate of 10.0◦C/min. The degree of supercooling of microencapsulated n-octadecane is decreased by adding 10.0 wt% of 1-octadecanol as a nucleating agent.
Microcapsules, n-Alkanes, Crystallization, Supercooling, Nucleating agents
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【期刊论文】Thermal stability and permeability of microencapsulated n-octadecane and cyclohexane
张兴祥, Y.F. Fan, X.X. Zhang, S.Z. Wu, X.C. Wang
Y. F. Fan et al. Thermochimica Acta 429 (2004) 25-29,-0001,():
-1年11月30日
Microencapsulated phase change materials (MicroPCMs) used as thermal insulating coating and fabrics are usually required to have a prominent thermal stability and a lower permeability.MicroPCMs with a prominent thermal stability and a lower permeability were fabricated by feeding an appropriate content of cyclohexane into n-octadecane followed by heat-treatment at a suitable condition. Microcapsules containing 18-19% reserved expandable space are synthesized at 30-40wt.% cyclohexane in the oil phase, which have a highest thermal resistant temperature -270 ◦C, and a lower permeability, less than 1.2%. The weight loss of microcapsules is mainly attributed to the leakage of n-octadecane from some broken capsules, so improving their uniformity can efficiently enhance their thermal stability and lower the permeability.
Microcapsules, Phase change material, Thermal stability, Permeability
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