Journal of Elastomers and Plastics最新文献_第4页

Effect of Compressibility on Nonlinear Buckling of Simply Supported Polyurethane Spherical Shells Subjected to an Apical Load 压缩率对顶端荷载作用下简支聚氨酯球壳非线性屈曲的影响

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2011-01-25 DOI: 10.1177/0095244310393930

Bulent Yildirim, R. F. Yükseler

{"title":"Effect of Compressibility on Nonlinear Buckling of Simply Supported Polyurethane Spherical Shells Subjected to an Apical Load","authors":"Bulent Yildirim, R. F. Yükseler","doi":"10.1177/0095244310393930","DOIUrl":"https://doi.org/10.1177/0095244310393930","url":null,"abstract":"In this study, the effect of compressibility on the nonlinear buckling of the simply supported polyurethane spherical shells subjected to an apical concentrated load is presented. The problem is strongly nonlinear both physically and geometrically. Since the closed form solution of the corresponding algebraical and differential equations is not possible, numerical methods are used unavoidably. The governing equations of the problem are converted to algebraical difference equations via the finite difference method and the obtained algebraical equations are solved numerically by using the Newton— Raphson method. Several numerical experiments corresponding to the various values of a thickness parameter, a depth parameter and a material constant related with the compressibility of polyurethane are performed and the force— apex deflection curves are drawn. Concluding remarks pertaining to the effect of the variation of the material constant related with the compressibility on the buckling loads and buckling deflections of the simply supported polyurethane spherical shells, subjected to an apical load, with various thicknesses and depths are presented.","PeriodicalId":15644,"journal":{"name":"Journal of Elastomers and Plastics","volume":"88 1","pages":"167 - 187"},"PeriodicalIF":1.7,"publicationDate":"2011-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78588275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Effect of Shearing on the Reinforcement Properties of Vital Wheat Gluten 剪切对活性小麦面筋增强性能的影响

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2011-01-25 DOI: 10.1177/0095244310397740

S. C. Peterson, Lei Jong

{"title":"Effect of Shearing on the Reinforcement Properties of Vital Wheat Gluten","authors":"S. C. Peterson, Lei Jong","doi":"10.1177/0095244310397740","DOIUrl":"https://doi.org/10.1177/0095244310397740","url":null,"abstract":"An aqueous dispersion of vital wheat gluten and styrenebutadiene rubber was subjected to high-shear mixing in an attempt to reduce the aggregate size and enhance filler—matrix interactions with the goal of improving contributions of the reinforcement to the overall composite properties. Composites were formulated using 10—40% vital wheat gluten by mixing aqueous suspensions of the gluten and rubber, then freeze-drying and compression molding the resulting composite. Rheological experiments indicated that vital wheat gluten reinforced the rubber up to a factor of roughly 30. Subjecting the gluten suspension to high shearing reduced the particle size from approximately 5.2—4.5 µm, and 16 min was the optimum shearing time since shearing the dispersions longer did not result in any additional size reduction. Composites with 10% vital wheat gluten have good potential in applications requiring high elasticity since they were equal to or better than the carbon black control in terms of Young’s modulus, percent elongation, and toughness. Isolated vital wheat gluten was studied in order to determine its relative merit as one of the two reinforcing components of wheat flour (the other being wheat starch), and vital wheat gluten’s reinforcing ability was a factor of 10 weaker than wheat flour, indicating that wheat starch is a much more effective biomaterial filler in terms of rigidity, but vital wheat gluten may be more suitable for applications requiring more elasticity.","PeriodicalId":15644,"journal":{"name":"Journal of Elastomers and Plastics","volume":"10 1","pages":"207 - 220"},"PeriodicalIF":1.7,"publicationDate":"2011-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80280690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Pressure Sensors Based on Polyvinyl Chloride/Graphite/Nickel Nanocomposites 聚氯乙烯/石墨/镍纳米复合材料压力传感器

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2011-01-25 DOI: 10.1177/0095244310393927

O. Al-Hartomy, F. Al-Solamy, A. Al-Ghamdi, M. A. Ibrahim, N. Dishovsky, F. El-Tantawy

引用次数: 7

Synthesis and Characterization of Superparamagnetic Polyaniline Nanocomposites as Conductive Shields 超顺磁性聚苯胺纳米复合材料导电屏蔽的合成与表征

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2011-01-25 DOI: 10.1177/0095244310393929

M. Saboktakin, A. Maharramov, M. Ramazanov

引用次数: 1

Suspension Grafting Copolymerization of EPM-g-MAN and Its Toughening Effect on SAN Resin EPM-g-MAN悬浮接枝共聚及其对SAN树脂的增韧作用

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2011-01-01 DOI: 10.1177/0095244310385436

K. Xiong, Lianshi Wang, Anqiang Zhang

{"title":"Suspension Grafting Copolymerization of EPM-g-MAN and Its Toughening Effect on SAN Resin","authors":"K. Xiong, Lianshi Wang, Anqiang Zhang","doi":"10.1177/0095244310385436","DOIUrl":"https://doi.org/10.1177/0095244310385436","url":null,"abstract":"EPM-graft-methyl methacrylate and acrylonitrile (EPM-g-MAN) was synthesized by graft copolymerization of methyl methacrylate (MMA) and acrylonitrile (AN) onto ethylene—propylene bipolymer (EPM) using the method of suspension polymerization. A novel engineering plastic with high impact strength, AEMS, which shows excellent resistance to weatherability and yellow discoloration and aging properties, were prepared by blending EPM-g-MAN with styrene—acrylonitrile (SAN) resin. The influence of the suspension grafting copolymerization technologies, including monomer ratios, EPM ratios, initiator content on monomer conversion ratio, grafting ratio, grafting efficiency, and the impact strength of AEMS, were investigated. The result showed that the optimized reaction conditions were obtained when the mass ratio of AN/MMAAN(fAN) was 15 wt%, the mass ratio of EPM/(EPM + MMA-AN) was 60 wt%, and the mass ratio of BPO/(EPM + MMA-AN) was 0.6 wt%. When the EPM/ AEMS mass ratio was 25 wt%, the notched Izod impact strength of AEMS reached 55.9 kJ/m2. DSC and DMA analysis showed that the compatibility of EPM-g-MAN and SAN resin improved when the grafting chain polarity was appropriate. Transmission electron microscopy analysis showed that EPM phase was the near continuous phase in the shape of bead string with diameter of about 0.15 μm and had good compatibility with SAN resin. Scanning electron microscopy analysis indicated that AEMS fracture surface appeared ‘root beard’ morphology. These phenomena indicated that the toughening mechanism was shear yielding of matrix, which endowed AEMS with remarkable toughness.","PeriodicalId":15644,"journal":{"name":"Journal of Elastomers and Plastics","volume":"31 1","pages":"49 - 63"},"PeriodicalIF":1.7,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87115953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Transport of Aromatic Hydrocarbons through EPDM/NBR Blends EPDM/NBR共混物中芳烃的输运

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2011-01-01 DOI: 10.1177/0095244310383550

K. Manoj, P. Kumari, C. Rajesh, G. Unnikrishnan

引用次数: 0

Dynamic Mechanical Analysis of Electron Beam Irradiated Waste Polyethylene and its Blends with Virgin High Density and Low Density Polyethylene 电子束辐照废聚乙烯及其与高密度、低密度聚乙烯共混物的动态力学分析

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2011-01-01 DOI: 10.1177/0095244310383541

S. Satapathy, G. Nando, A. Nag

引用次数: 3

The Influence of Lubrication on Two-body Abrasive Wear of Sealing Elastomers Under Reciprocating Sliding Conditions 往复滑动条件下润滑对密封弹性体两体磨粒磨损的影响

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2011-01-01 DOI: 10.1177/0095244310385435

M. Mofidi, B. Prakash

引用次数: 15

Effect of Sodium Sulfate on the Viscosity, Tack, and Adhesion Properties of SMR 10-based Pressure-sensitive Adhesive 硫酸钠对smr10基压敏胶粘度、粘性和粘接性能的影响

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2011-01-01 DOI: 10.1177/0095244310383545

I. Khan, B. T. Poh, C. Badriah

引用次数: 10

Preparation of an Al2O3—EVA Co-film and its Thermal Conductivity Al2O3-EVA共膜的制备及其导热性能

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2010-11-01 DOI: 10.1177/0095244310376922

Mingxia Shen, Jing He, Yinxin Cui, Yaoming Zhang

引用次数: 2