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Preparation of lignin/TiO2 nanocomposites and their application in aqueous polyurethane coatings
Dongjie Yang, Shengyu Wang, Ruisheng Zhong, Weifeng Liu, Xueqing Qiu
《化学科学与工程前沿(英文)》 2019年 第13卷 第1期 页码 59-69 doi: 10.1007/s11705-018-1712-0
Biodegradation of waste refrigerator polyurethane by mealworms
《环境科学与工程前沿(英文)》 2023年 第17卷 第3期 doi: 10.1007/s11783-023-1638-8
● Waste refrigerator polyurethane (WRPU) was ingested and biodegraded by mealworms.
关键词: Waste refrigerator polyurethane Mealworms Biodegradation Carbon balance Gut microorganism
Hyperbranched azo polyurethane synthesized through A + B scheme
CHE Pengchao, HE Yaning, WANG Xiaogong
《化学科学与工程前沿(英文)》 2008年 第2卷 第1期 页码 123-126 doi: 10.1007/s11705-007-0078-5
关键词: dimethylformamide one-step polymerization polyurethane 2-hydroxyethyl diphenylmethane-4 4′-diisocyanate
Thomas ELLINGHAM, Hrishikesh KHARBAS, Mihai MANITIU, Guenter SCHOLZ, Lih-Sheng TURNG
《机械工程前沿(英文)》 2018年 第13卷 第1期 页码 96-106 doi: 10.1007/s11465-018-0498-6
A three-stage molding process involving microcellular injection molding with core retraction and an “out-of-mold” expansion was developed to manufacture thermoplastic polyurethane into lightweight foams of varying local densities, microstructures, and mechanical properties in the same microcellular injection molded part. Two stages of cavity expansion through sequential core retractions and a third expansion in a separate mold at an elevated temperature were carried out. The densities varied from 0.25 to 0.42 g/cm3 (77% to 62% weight reduction). The mechanical properties varied as well. Cyclic compressive strengths and hysteresis loss ratios, together with the microstructures, were characterized and reported.
关键词: thermoplastic polyurethane microcellular injection molding cavity expansion compressive strength hysteresis loss ratio
3D finite element analysis of composite noise barrier constructed of polyurethane products
Ben DAEE,Hesham El NAGGAR
《结构与土木工程前沿(英文)》 2017年 第11卷 第1期 页码 100-110 doi: 10.1007/s11709-016-0364-8
关键词: 3D finite element sound wall rigid polyurethane foam poly-wall numerical model calibration
Jiao Feng, Qiuhao Lu, Weimin Tan, Kequan Chen, Pingkai Ouyang
《化学科学与工程前沿(英文)》 2019年 第13卷 第1期 页码 80-89 doi: 10.1007/s11705-018-1763-2
1,5-Pentamethylene diisocyanate, a novel aliphatic diisocyanate formed from bio-based 1,5-pentamethylenediamine, has been used as a hard segmented material to synthesize polyurethane. In this study, several waterborne polyurethane (WPU) dispersions have been successfully prepared by a prepolymer process from 1,5-pentamethylene diisocyanate poly(polyether) with different NCO/OH ratios and 1,6-hexanediol (HDO)/dimethylol propionic acid (DMPA) molar ratios. The Fourier transform infrared (FTIR) spectra, thermogravimetric analysis, differential scanning calorimetry, X-ray diffraction, and a mechanical tensile test were used to investigate the structures, thermal stability, phase separation, crystallinity, mechanical properties, and adhesive performance of the WPU dispersions. The FTIR results indicate that the degree of hydrogen bonding and the numbers of urea groups increase as the NCO/OH ratio and HDO/DMPA molar ratio increase. Furthermore, the phase separation increases and the thermal stability decreases as the NCO/OH ratio increases or the HDO/DMPA molar ratio decreases. Finally, WPU3.0-2.4 (NCO/OH=3, HDO/DMPA=2.4) exhibits a maximum tensile strength and shear strength, pointing to its possible use as an adhesive. These results could provide a very valuable reference for industrial applications of WPU.
关键词: 1 5-pentamethylene diisocyanate polyurethane water based
Optimization of polyurethane-bonded thin overlay mixture designation for airport pavement
Xianrui LI; Ling XU; Qidi ZONG; Fu JIANG; Xinyao YU; Jun WANG; Feipeng XIAO
《结构与土木工程前沿(英文)》 2022年 第16卷 第8期 页码 947-961 doi: 10.1007/s11709-022-0836-y
关键词: polyurethane-bonded mixture mix design optimization airport pavement thin overlay gray relational analysis
Weihong Zhang, Dan Wang, Jie-Xin Wang, Yuan Pu, Jian-Feng Chen
《化学科学与工程前沿(英文)》 2020年 第14卷 第6期 页码 1087-1099 doi: 10.1007/s11705-019-1895-z
《化学科学与工程前沿(英文)》 2023年 第17卷 第1期 页码 1-14 doi: 10.1007/s11705-022-2176-9
关键词: SiO2/TiO2 nanoparticle nanocomposite coatings dynamic mechanical analysis electrochemical techniques corrosion colloids and interfaces
Numerical simulation of liquid falling film on horizontal circular tubes
Fengdan SUN, Songlin XU, Yongchuan GAO
《化学科学与工程前沿(英文)》 2012年 第6卷 第3期 页码 322-328 doi: 10.1007/s11705-012-1296-z
关键词: falling film horizontal tube flow characteristics film thickness liquid feeder height
Heyun WANG, Yakai FENG, Marc BEHL, Andreas LENDLEIN, Haiyang ZHAO, Ruofang XIAO, Jian LU, Li ZHANG, Jintang GUO
《化学科学与工程前沿(英文)》 2011年 第5卷 第3期 页码 392-400 doi: 10.1007/s11705-011-1202-0
关键词: electrospinning artificial blood vessels scaffold polyurethane gelatin nanofiber hemocompatibility
Qian Wu, Jincheng Zhang, Shengpeng Wang, Bajin Chen, Yijun Feng, Yongbing Pei, Yue Yan, Longcheng Tang, Huayu Qiu, Lianbin Wu
《化学科学与工程前沿(英文)》 2021年 第15卷 第4期 页码 969-983 doi: 10.1007/s11705-020-1988-8
关键词: flame retardancy flexible polyurethane foam graphene oxide silicone resin
Experiment and optimal design of a collection device for a residual plastic film baler
Qi NIU,Xuegeng CHEN,Chao JI,Jie WU
《农业科学与工程前沿(英文)》 2015年 第2卷 第4期 页码 347-354 doi: 10.15302/J-FASE-2015077
关键词: residual film collection device collection rate of residual film impurity of film package optimization baler
雒建斌,张朝辉,温诗铸
《中国工程科学》 2003年 第5卷 第7期 页码 84-89
薄膜润滑是20世纪90年代以来广泛研究的新型润滑状态。它是界于弹流润滑和边界润滑之间的一种过渡润滑状态,有着自己独特的润滑规律。文章回顾了薄膜润滑的研究历史,包括薄膜润滑概念的提出、测试技术的发展、薄膜润滑的膜厚特性、润滑机理探索以及计算理论等方面的研究成果与主要进展。
Thin-liquid-film evaporation at contact line
Hao WANG, Zhenai PAN, Zhao CHEN
《能源前沿(英文)》 2009年 第3卷 第2期 页码 141-151 doi: 10.1007/s11708-009-0020-2
关键词: meniscus thin film contact line disjoining pressure evaporation
标题 作者 时间 类型 操作
Preparation of lignin/TiO2 nanocomposites and their application in aqueous polyurethane coatings
Dongjie Yang, Shengyu Wang, Ruisheng Zhong, Weifeng Liu, Xueqing Qiu
期刊论文
Hyperbranched azo polyurethane synthesized through A + B scheme
CHE Pengchao, HE Yaning, WANG Xiaogong
期刊论文
Microcellular injection molding process for producing lightweight thermoplastic polyurethane with customizable
Thomas ELLINGHAM, Hrishikesh KHARBAS, Mihai MANITIU, Guenter SCHOLZ, Lih-Sheng TURNG
期刊论文
3D finite element analysis of composite noise barrier constructed of polyurethane products
Ben DAEE,Hesham El NAGGAR
期刊论文
ratio and the 1,6-hexanediol/dimethylol propionic acid molar ratio on the properties of waterborne polyurethane
Jiao Feng, Qiuhao Lu, Weimin Tan, Kequan Chen, Pingkai Ouyang
期刊论文
Optimization of polyurethane-bonded thin overlay mixture designation for airport pavement
Xianrui LI; Ling XU; Qidi ZONG; Fu JIANG; Xinyao YU; Jun WANG; Feipeng XIAO
期刊论文
High-gravity-assisted emulsification for continuous preparation of waterborne polyurethane nanodispersion
Weihong Zhang, Dan Wang, Jie-Xin Wang, Yuan Pu, Jian-Feng Chen
期刊论文
surface modified mixed metal oxide nanoparticles on the electrochemical and mechanical properties of polyurethane
期刊论文
Numerical simulation of liquid falling film on horizontal circular tubes
Fengdan SUN, Songlin XU, Yongchuan GAO
期刊论文
Hemocompatible polyurethane/gelatin-heparin nanofibrous scaffolds formed by a bi-layer electrospinning
Heyun WANG, Yakai FENG, Marc BEHL, Andreas LENDLEIN, Haiyang ZHAO, Ruofang XIAO, Jian LU, Li ZHANG, Jintang GUO
期刊论文
Exceptionally flame-retardant flexible polyurethane foam composites: synergistic effect of the silicone
Qian Wu, Jincheng Zhang, Shengpeng Wang, Bajin Chen, Yijun Feng, Yongbing Pei, Yue Yan, Longcheng Tang, Huayu Qiu, Lianbin Wu
期刊论文
Experiment and optimal design of a collection device for a residual plastic film baler
Qi NIU,Xuegeng CHEN,Chao JI,Jie WU
期刊论文