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STRUCTURE AND PROPERTIES OF IONOMERS BASED ON ETHYLENE-CO-METHACRYLIC ACID COPOLYMER(EMAA) : Effects of Ion Aggregates 乙烯-甲基丙烯酸共聚物(EMAA)离子聚体的结构与性能:离子聚集体的影响
Materials Science Research International Pub Date : 1999-03-15 DOI: 10.2472/JSMS.48.3APPENDIX_28
Xiangsheng Zeng, H. Yamane, Masaoki Takahashi, T. Masuda
{"title":"STRUCTURE AND PROPERTIES OF IONOMERS BASED ON ETHYLENE-CO-METHACRYLIC ACID COPOLYMER(EMAA) : Effects of Ion Aggregates","authors":"Xiangsheng Zeng, H. Yamane, Masaoki Takahashi, T. Masuda","doi":"10.2472/JSMS.48.3APPENDIX_28","DOIUrl":"https://doi.org/10.2472/JSMS.48.3APPENDIX_28","url":null,"abstract":"Fourier-transform infrared spectra (FTIR) measurement was made on zinc and sodium ionomers (EMAA-Zn and EMAA-Na) of ethylene-co-methacrylic acid copolymer. It was found that the asymmetry stretching vibration peak of C-O bond of COO . group in ion aggregates of EMAA-Na appeared at lower wavenumber, compared with EMAA-Zn. This means that complete and stable ion aggregates exist in EMAA-Na. Differential scanning calorimetry (DSC) measurement showed that endotherm peak (T 1 ) in lower temperature range resulted from melting of subcrystallites of crystalline ethylene in EMAA and EMAA ionomers. Tensile properties and dynamic viscoelasticity of EMAA greatly changed with the introduction of ionic groups.","PeriodicalId":377759,"journal":{"name":"Materials Science Research International","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131416735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Local Structure Of Eu3+ In Borosilicate Glasses By Phonon Sideband Spectra 硼硅酸盐玻璃中Eu3+的声子边带光谱局部结构
Materials Science Research International Pub Date : 1998-12-15 DOI: 10.2472/JSMS.47.12APPENDIX_239
Z. Yao, Yong Ding, T. Nanba, Y. Miura
{"title":"Local Structure Of Eu3+ In Borosilicate Glasses By Phonon Sideband Spectra","authors":"Z. Yao, Yong Ding, T. Nanba, Y. Miura","doi":"10.2472/JSMS.47.12APPENDIX_239","DOIUrl":"https://doi.org/10.2472/JSMS.47.12APPENDIX_239","url":null,"abstract":"In xNa2O•E(40-x)B2O3•E60SiO2 (mol%) (x=5, 10, 15, 20, 25, 30) glasses with 0.25mol% Eu2O3 as additive, the local structure around Eu3+ was explored by employing the phonon sideband spectra of Eu3+ associated with the 5D •©F transition. It was found that the types and fraction of the structural units around Eu3+ varied with glass composition. Moreover, the B-Ovibrational mode of BO3 unit exists around Eu3+ when x•...15, which is not present in the same composition glasses free of Eu3+. A greatest asymmetry in the surrounding of Eu3+ occurs at x=10, inconsistent with a maximum of some physical properties found in sodium borosilicate glasses at a Na:B ratio of about unity. In addition, various structural units possess different coordination preference to Eu3+. The highest theoretical microscopic optical basicity on the oxygen atoms in these units was advocated as a criterion of the coordination preference, which successfully elucidated a series of coordination preference phenomena occurring in silicate, borate and borosilicate glasses.","PeriodicalId":377759,"journal":{"name":"Materials Science Research International","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133309656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
UNIAXIAL ELONGATIONAL VISCOSITY OF POLY(STYRENE-BLOCK-BUTADIENE-BLOCK-STYRENE)MELTS 聚苯乙烯-丁二烯-嵌段-苯乙烯熔体的单轴拉伸粘度
Materials Science Research International Pub Date : 1998-06-15 DOI: 10.2472/JSMS.47.6APPENDIX_97
Tatsuhiro Takahashi, J. Takimoto, K. Koyama
{"title":"UNIAXIAL ELONGATIONAL VISCOSITY OF POLY(STYRENE-BLOCK-BUTADIENE-BLOCK-STYRENE)MELTS","authors":"Tatsuhiro Takahashi, J. Takimoto, K. Koyama","doi":"10.2472/JSMS.47.6APPENDIX_97","DOIUrl":"https://doi.org/10.2472/JSMS.47.6APPENDIX_97","url":null,"abstract":"are","PeriodicalId":377759,"journal":{"name":"Materials Science Research International","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114331111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
COMPRESSION MOLDING OF SANDWICH PLATE USING WASTE CORD ASSEMBLAGE OF SYNTHETIC FABRICS : Melting Behavior of Waste Cord by Infrared Heating 合成纤维废线绳复合材料的夹心板压缩成型:废线绳红外加热的熔融特性
Materials Science Research International Pub Date : 1998-06-15 DOI: 10.2472/JSMS.47.6APPENDIX_124
Teruo Kimura, M. Takeuchi, N. Nagai, K. Nakanishi
{"title":"COMPRESSION MOLDING OF SANDWICH PLATE USING WASTE CORD ASSEMBLAGE OF SYNTHETIC FABRICS : Melting Behavior of Waste Cord by Infrared Heating","authors":"Teruo Kimura, M. Takeuchi, N. Nagai, K. Nakanishi","doi":"10.2472/JSMS.47.6APPENDIX_124","DOIUrl":"https://doi.org/10.2472/JSMS.47.6APPENDIX_124","url":null,"abstract":"The sandwich-type heat insulating board with fiber assemblage as a core layer was molded by applying a compression molding method to the waste cord assemblage whose surface layer was melted partially beforehand by an infrared heating technique. The fairly small thermal conductivity could be achieved for the present molded plastic board. In the complex phenomena during the molding process, this paper focused on the melting behavior of thermoplastic waste cord of synthetic fabrics heated by the infrared heaters. The melting test was performed in the special closed furnace. The temperature response and distributions in the waste cord assemblage were measured by using thermocouples and the melting behavior was observed for various heating power of the infrared heaters. Moreover, the melting rate was measured for the waste cord assemblages with various void ratios. The simple compression molding method described in this paper shows promise as a contribution towards the recycling of wastes of thermoplastic fibrous material, and the experimental results obtained here may be contribute to the establishment of the optimum molding system.","PeriodicalId":377759,"journal":{"name":"Materials Science Research International","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124204356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
STRUCTURE AND MECHANICAL PROPERTIES OF BIMODAL PDMS NETWORKS IN THE SWOLLEN STATE 膨胀状态下双峰PDMS网络的结构与力学性能
Materials Science Research International Pub Date : 1998-06-15 DOI: 10.2472/JSMS.47.6APPENDIX_113
T. Kawamura, K. Urayama, S. Kohjiya
{"title":"STRUCTURE AND MECHANICAL PROPERTIES OF BIMODAL PDMS NETWORKS IN THE SWOLLEN STATE","authors":"T. Kawamura, K. Urayama, S. Kohjiya","doi":"10.2472/JSMS.47.6APPENDIX_113","DOIUrl":"https://doi.org/10.2472/JSMS.47.6APPENDIX_113","url":null,"abstract":"We have investigated mechanical properties of bimodal networks, which have a two-peak distribution of the length of the network chains between crosslinks, in equilibrium swollen state. The bimodal networks were prepared by end-linking mixtures of short and long poly (dimethylsiloxane) (PDMS) chains with tetra-functional crosslinker. The ratio of molecular mass of the short and long PDMS chains was ca. 11. The stress-strain relationships have been investigated as a function of molar fraction of short chains. The networks with more than 98mol% short chains are brittle and they have high elastic moduli. When the molar fractions of short chains fall below 95mol%, the networks become markedly extensible. The stress-strain relations of unimodal networks and bimodal network with small fraction of short chains obey the prediction of the classical theory of rubber elasticity, while those of other bimodal networks deviate from the theoretical prediction. The dependence of network structure on the composition of precursor chains has been estimated from the analysis of the stress-strain behavior. The structure model proposed in small angle X-ray scattering (SAXS) study on bimodal networks has been re-examined on the basis of the results of mechanical experiments in this study.","PeriodicalId":377759,"journal":{"name":"Materials Science Research International","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134359861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Biomimetic coating of bone-like apatite on glass beads 骨状磷灰石在玻璃珠上的仿生涂层
Materials Science Research International Pub Date : 1998-03-15 DOI: 10.2472/JSMS.47.3APPENDIX_60
A. Osaka, S. Takemoto, S. Hayakawa, C. Ohtsuki
{"title":"Biomimetic coating of bone-like apatite on glass beads","authors":"A. Osaka, S. Takemoto, S. Hayakawa, C. Ohtsuki","doi":"10.2472/JSMS.47.3APPENDIX_60","DOIUrl":"https://doi.org/10.2472/JSMS.47.3APPENDIX_60","url":null,"abstract":"Soda lime glass beads were chemically treated by either an aqueous solution of NaOH (3mol/l) or a hydrogen peroxide solution (30vol%) containing TaCl5 in 5•~10-3mol/l or by both of them. The treated samples were soaked up to 14 days in a simulated body fluid (SBF): Na+ 142.0, K+ 5.0, Ca2+ 2.5, Mg2+ 1.5, Cl147.8, HCO34.2, HPO421.0, SO420.5 (in 10-3mol/l), or in another solution 1.5 times as concentrated as SBF (1.5SBF). The SBFs were kept at 36.5•Ž and at 7.25 in pH. Apatite was deposited on the samples treated with the NaOH solution, the H2O2/Ta solution, and both of them before soaking in 1.5SBF. Ta(V) ions were present on not only the samples treated with the H2O2/Ta solution but those treated with both NaOH and the H2O2/Ta solutions. It was concluded that Ta(V) ions on the surface layer had ability of inducing apatite deposition, and the ability was enhanced by the coexistence with silanol","PeriodicalId":377759,"journal":{"name":"Materials Science Research International","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117210270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ESTIMATION OF CORROSION RESISTANCE OF Zn-0〜30%AL HOT-DIP COATINGS ON STEEL 钢表面Zn-0 ~ 30%AL热浸涂层的耐蚀性评价
Materials Science Research International Pub Date : 1998-03-15 DOI: 10.2472/JSMS.47.3APPENDIX_64
Y. Takano, K. Takada, T. Hatano, T. Nakada, Tatsumi Izeki, Yong Xiao, Ryoichi Watanabe, M. Yamashita
{"title":"ESTIMATION OF CORROSION RESISTANCE OF Zn-0〜30%AL HOT-DIP COATINGS ON STEEL","authors":"Y. Takano, K. Takada, T. Hatano, T. Nakada, Tatsumi Izeki, Yong Xiao, Ryoichi Watanabe, M. Yamashita","doi":"10.2472/JSMS.47.3APPENDIX_64","DOIUrl":"https://doi.org/10.2472/JSMS.47.3APPENDIX_64","url":null,"abstract":"","PeriodicalId":377759,"journal":{"name":"Materials Science Research International","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116798404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
THE JAPANESE SWORD : The Material, Manufacturing and Computer Simulation of Quenching Process 日本刀:淬火过程的材料、制造和计算机模拟
Materials Science Research International Pub Date : 1997-12-15 DOI: 10.2472/JSMS.46.12APPENDIX_193
Tatsuo Inoue
{"title":"THE JAPANESE SWORD : The Material, Manufacturing and Computer Simulation of Quenching Process","authors":"Tatsuo Inoue","doi":"10.2472/JSMS.46.12APPENDIX_193","DOIUrl":"https://doi.org/10.2472/JSMS.46.12APPENDIX_193","url":null,"abstract":"Traditional methods of preparing a kind of steel called tamahagane used for the Japanese sword by tatara system and procedure of making the sword are briefly introduced with the discussions from the viewpoint of metallurgy and thermo-mechanical processing. Such traditional methods are also revealed to be consistent with the modern science and technology. The quenching process applied to the final stage of the procedure is focussed to explain how the pattern of blade, the deformation and residual stresses are induced by the computer simulation based on the theory of metallo-thermo-mechanics relevant to the coupled fields among temperature, microstructural change and stress/strain.","PeriodicalId":377759,"journal":{"name":"Materials Science Research International","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133584074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
CRACK INITIATION BEHAVIOR OF ABS RESIN UNDER MODE I AND MIXED MODE LOADING I型和混合模态加载下abs树脂的裂纹起裂行为
Materials Science Research International Pub Date : 1997-09-15 DOI: 10.2472/JSMS.46.9APPENDIX_158
Husaini, M. Notomi, K. Kishimoto, T. Shibuya
{"title":"CRACK INITIATION BEHAVIOR OF ABS RESIN UNDER MODE I AND MIXED MODE LOADING","authors":"Husaini, M. Notomi, K. Kishimoto, T. Shibuya","doi":"10.2472/JSMS.46.9APPENDIX_158","DOIUrl":"https://doi.org/10.2472/JSMS.46.9APPENDIX_158","url":null,"abstract":"Mode I and mixed mode loading testing of ABS resin were carried out by using compact tension shear specimens. Two types of ABS resin were examined. The first one (ABS-1) has a butadiene rubber content of 18wt% in the form of small particles of diameter of about 200nm. The second one (ABS-2) has the same overall butadiene rubber content but a bimodal particle distribution with diameters of 200nm and 500nm. Crack initiation behavior was observed by using a video microscope. The fracture toughness of ABS-2 obtained by mode I testing is larger than that of ABS-1. The fracture angle for both materials under mixed mode loading coincides with the values predicted by the maximum hoop stress criterion. On the contrary, at crack initiation under mixed mode loading, the critical values of KI and KII are larger than those estimated by the maximum hoop stress criterion. The increase in the critical values of KI and KII under mixed mode loading for ABS-2 is higher than those for ABS-1. The bimodal type distribution of rubber particle size produces better fracture resistance.","PeriodicalId":377759,"journal":{"name":"Materials Science Research International","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116982548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
INTERPRETATION OF PRIMARY CREEP DEFORMATION MECHANISM THROUGH ACTIVATION ENERGY MEASUREMENTS 通过活化能测量解释蠕变的初始变形机制
Materials Science Research International Pub Date : 1997-09-15 DOI: 10.2472/JSMS.46.9APPENDIX_166
H. Cho, S. Nam, S. Hwang, N. Kim
{"title":"INTERPRETATION OF PRIMARY CREEP DEFORMATION MECHANISM THROUGH ACTIVATION ENERGY MEASUREMENTS","authors":"H. Cho, S. Nam, S. Hwang, N. Kim","doi":"10.2472/JSMS.46.9APPENDIX_166","DOIUrl":"https://doi.org/10.2472/JSMS.46.9APPENDIX_166","url":null,"abstract":"Primary creep behaviors of the lamellar structured Ti-46.6Al-1.4Mn-2Mo (at.%) alloy (EPM alloy), which is fabricated by hot extrusion of a blended elemental powder mixture (EPM), are investigated in an air environment over the temperature range of from 775 to 900°C under constant stress ranging from 150 to 250MPa. The apparent activation energy of the primary creep deformation is measured to be increased with the creep strain and found to be saturated to the value of the activation energy of the steady state creep deformation. Reduction of effective stress with creep strain in the primary region is suggested to be responsible for the increase in the apparent activation energy. All the creep rates normalized by the apparent activation energies measured at the given creep strain within the primary region show the stress exponent of 4.2 when plotted against the applied stress.","PeriodicalId":377759,"journal":{"name":"Materials Science Research International","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124116555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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