检索结果-南通市图书馆

Structure and Properties of Polytetrafluorethylene and Polyurethane Layered Membrane for Protective Clothing

在线全文

学校读者我要写书评

暂无评论

Journal of Donghua University(English Edition) 2006年第1期23卷 49-52页

作者：黄机质张建春高卫东) Key Laboratory of Science and Technology of Eco-textile Southern Yangtze UniversityWuxi 214122College of TextilesDonghua UniversityShanghai 200051 the quartermaster research institute of the general logistic department of cpla Beijing 100088 Key Laboratory of Science and Technology of Eco-textile Southern Yangtze UniversityWuxi 214122

This paper presents a new idea for intensifying protective and stretch recovery properties of micro porous polytetrafluorethylene and hydrophilic polyurethane (PTFE/PU) layered membrane through a co-stretching process. The structure and properties of co-stretching PTFE/PU layered membrane and coated PTFE/PU layered membrane by means of directly coating the PU on the PTFE membrane were investigated using Electron Microscope, Universal Materials Testing Machine, and the water vapor permeability (WVP) was measured according to absorption method of water vapor of GB/T 12704-91. Contrasted to PU coating process, the PU membrane on the co-stretching PTFE/PU membrane is nonporous because of heat treatment process, which can prevent the SARS virus from permeating the Co-stretching PTFE/PU membrane. The stretch and recovery properties of the Co-stretching PTFE/PU membrane is at least 66% after being stretched to 50% of its original length in transverse directions and that of the coated PTFE/PU membrane is 52%. The WVP of the Co-stretching PTFE/PU membrane is 13 523 g/24 h·m^2. The results suggest that when Co-stretching PTFE/PU membrane is laminated to a stretchable fabric, the fabric would have excellent stretch and recovery properties while waterproof and being permeable to water vapor. So, the Co-stretching PTFE/PU membrane laminated fabric will be a comfortable protective clothing material.

关键词：聚四氟乙烯聚氨酯塑料薄膜防护服结构性能

The Mechanical Behaviour of Rubber Hose Reinforced with Warp Knitted Fabric

在线全文

学校读者我要写书评

暂无评论

Journal of Donghua University(English Edition) 2006年第4期23卷 44-47页

作者：黄机质张华鹏张建春 Key Laboratory of Science and Technology of Eco-Textile Ministry of EducationSouthern Yangtze UniversityWuxi 214122College of TextilesDonghua UniversityShanghai 201620 Key Laboratory of Advanced Textile Materials and Manufacturing Technology Ministry of Education Zhejiang SciTech UniversityHangzhou 310018 the quartermaster research institute of the general logistic department of cpla Beijing 100088

A new process for the rubber hose reinforced with warp knitted fabric was introduced, and the relation between the inside pressure and the radial expansion ratio of four kinds of rubber radiator hose reinforced with warp knitted fabric was investigated. The result showed that the bursting pressure and the radial direction expansion ratio of the hose could meet the requirement of ISO4081 for auto radiator hose. A new model was built up to analyse the relation between the inside pressure and the radial expansion ratio of the hose based on the reinforced fabric structure parameters and yarn properties.

关键词：混合纤维纺织技术纺织机械橡胶管

Effect of Irradiation Crosslinking on Polyethylene Terephthalate Flame-Retardant Fabric

在线全文

学校读者我要写书评

暂无评论

Journal of Donghua University(English Edition) 2016年第4期33卷 533-535页

作者：朱士凤施楣梧曲丽君田明伟袭祥龙 College of Textiles Qingdao University Qingdao 266071 China Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province Qingdao UniversityQingdao 266071 China quartermaster institute of general logistic department CPLA Beijing 100010 China Binzhou Technical College Binzhou 256603 China

Irradiation cross-linking of flame-retardant polyethylene terephthalate( FR-PET) fabric with the presence of trimethylolpropane triacrylate( TMPTA) was studied. Thermal gravimetric( TG) analysis,differential scanning calorimetry( DSC) and scanning electron microscopy( SEM) were used to analyze the effects of irradiation crosslinking on structure and property of FR-PET fabric with TMPTA. The cross-linking was promoted by the introduced sensitizer. The gel content was 5.94% at the lower dose of 90 kGy and it arrived at the highest level of 13.01% with the increased doses. There were no melt drips of FR-PET fabric after irradiation cross-linking while the flame retardance disappeared at the time of combustion. The melting temperature of irradiated fabric decreased and TG analysis showed that the onset temperature of degradation of FR-PET fabric and the amount of nonvolatile residue at 800℃ increased as the irradiation dosage increased,but it changed a little compared with the pure FR-PFT fabric. SEM photographs showed that the residue char of irradiated PET fabrics after vertical test remained the intrinsic crossed structure,and the enlarged graph showed that the char was uniformly distributed and it was tight honeycombs structure.

关键词： irradiation crosslinking sensitizer polyethylene terephthalate(PET) fabric no drip char

A new anti-hypoxia functional agent ——Schizophyllum commune fermented broth and its biochemical mechanisms

在线全文

学校读者我要写书评

暂无评论

Engineering Sciences 2013年第2期11卷 82-87页

作者： Hao Limin Lu Jike Wu Tianyi Ba Jianming Guo Changjiang Qian Ping Yu Jianyong Xing Xinhui The quartermaster Equipment institute of GLD of cpla department of Bioengineering Zhengzhou University High Altitude Medical research institute department of Endocrinology Chinese PLA General Hospital institute of Hygiene and Environmental Medicine Academy of Military Medical Sciences department of Chemical Engineering and Technology Tsinghua University

In order to overcome hypoxia induced sickness,a stable source of anti-hypoxia functional agents, Schizophyllum commune fermented broth has been developed in this study. Animal experiments were conducted to examine its anti-hypoxia activities and possible mechanisms involved. The acute hypoxic experiment showed that Schizophyllum commune fermented broth could significantly prolong the survival time of mice. The underlying mechanisms were associated with improved energy metabolism based on a study carried out in rats exposed to a low pressure chamber simulating the low pressure environment of 8 000 m altitude. It was concluded that the Schizophyllum commune fermented broth was an effective anti-hypoxia functional agent and could be greatly bene- ficial to those living and working at high altitudes,such as people who reside in the reconstruction regions of Yushu.

关键词：生化机制抗缺氧发酵液功能剂裂褶菌动物实验高海拔地区可能机制

Purification and characterization of schizophyllan from Schizophyllum commune

在线全文

学校读者我要写书评

暂无评论

Engineering Sciences 2013年第2期11卷 88-92页

作者： Hao Limin Zhang Jianchun Wu Tianyi Zhang Jian Lu Jike Wang Qizhi Zhang Xiaojuan Xing Xinhui The quartermaster Equipment institute of GLD of cpla High Altitude Medical research institute Jiangsu Province Academy of Traditional Chinese Medicine department of Bioengineering Zhengzhou University department of Chemical Engineering and Technology Tsinghua University

The schizophyllan from Schizophyllum commune was purified and characterized. The crude schizo-phyllan was obtained from Schizophyllum commune fermentation broth by decoloration with activated carbon,followed by deproteinization with Sevag method and ethanol precipitation. The pure schizophyllan was obtained by gel filtration chromatography with Sephacryl S-500,and its molecular characteristics were examined. The result showed that the molecular weight was 3.8×104 ,and the schizophyllan consisted of glucose with β-(1→6)-glucosidic linkages.

关键词：纯化凝胶过滤色谱法表征 Sevag法乙醇沉淀分子特性裂褶多糖活性炭