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Co/Cu 多层膜层间耦合作用的调节
关键字：co/cu,rkky,剩磁比,巨磁电阻
利用在Fe(5nm)/[Co/Cu]30 多层膜的隔离层(Cu)中掺入磁性元素Co，引入与相邻Co 层之间反铁磁的RKKY 作用相竞争的直接的铁磁耦合作用，降低了相邻Co 层间的交换耦合作用。在Cu 层中掺入不同原子数比例的磁性元素时，饱和磁场有所降低，从而提高了多层膜对外磁场变化的灵敏度。
http://www.polymer.cn/research/dis_info7002 |
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均匀沉淀法制备Co(OH)2 及其超电容特性
关键字：α-co(oh)2,均匀沉淀法,超级电容器
以氯化钴为原料、氨水（28%（质量分数））为沉淀剂采用均匀沉淀法合成了纯α-Co(OH)2。采用X射线衍射（XRD）、扫描电镜（SEM）、循环伏安、恒电流放电测试对样品形貌及电化学性能进行了表征和测试。研究结果表明，表面活性剂Tween-80 加入不但对样品的形貌有很大的改善；而且电化学性能也得到提高，其单电极比电容达到370F/g。
http://www.polymer.cn/research/dis_info6932 |
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化学镀Co-B 合金对Fe3O4 吸波性能的影响
关键字：co-b 合金,fe3o4,化学镀,吸波性能
采用化学共沉淀法制备纳米Fe3O4 颗粒，通过胶体钯活化敏化一步法处理后，以KBH4 为还原剂、C4H4O6Na2·2H2O 为络合剂进行Co-B 化学镀，对包覆前后的样品进行了XRD、SEM、TEM、电磁参数等表征以及吸波性能分析。结果表明：Fe3O4 表面包覆的纤维状Co-B 合金以无定形形式存在，Co-B 包覆Fe3O4 在2.0～18GHz 具有良好的吸波效果。
http://www.polymer.cn/research/dis_info6407 |
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Synthesis and characterization of poly(ε-caprolactone-co-L-lactide) and poly(ε-caprolactone-co-δ-valerolactone) initiated by tetrabutoxytitane
关键字：Synthesis,characterization,poly,caprolactone,lactide,poly,caprolactone,valerolactone,initiated,tetrabutoxytitane,
Poly( -caprolactone) is a semi-crystalline linear aliphatic polyester, generally described as a biodegradable or biohydrolyzable polymer because of the susceptibility of its aliphatic ester linkage to hydrolysis.
http://www.polymer.cn/research/dis_info5610 |
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PVC/SBR-g-(BA-co-St)共混物性能的研究
关键字：PVC/SBR-g-(BA-co-St)共混物
本实验主要是利用种子乳液聚合的方法在SBR(丁苯橡胶,St/Bd=30/70，200nm)胶乳上接枝BA(丙烯酸丁酯)和S（t 苯乙烯）共聚物，制得SBR-g-(BA-co-St)三元接枝共聚物，用于增韧PVC。考察了SBR-g（BA-co-St）中壳层接枝BA，MMA 的不同比例的对其共混物冲击性能，拉伸性能以及透光的影响。
http://www.polymer.cn/research/dis_info3605 |
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Studies on Sequential Structure of the Biodegradable Poly(butylene succinate-co-butylene terephthate) (PBST)
关键字：Studies on Sequential Structure, Biodegradable Poly(butylene succinate-co-butylene terephthate) (PBST)
A series of biodegradable aliphatic-aromatic copolyesters PBSTs were efficiently synthesized from dimethyl succinate (DMS) and dimethyl terephthalate (DMT) reacting with 1,4-butanediol (BD) through polycondensation in the present of Titanium tetraisopropo...
http://www.polymer.cn/research/dis_info1317 |
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La-Co替代的M型永磁铁氧体
关键字：M型永磁铁氧体 La-Co替代 工艺 磁性能
对La-Co替代的M型高性能永磁铁氧体进行了详细介绍，包括材料制备的工艺特点，成分，显微结构，材料的内禀参数，技术磁性能以及温度特性等。研究结果表明：最优化组分为Sr0.7La0.3Fe11.7Co0.3O19的M型永磁铁氧体的饱和磁化强度Ms（298K）比SrFe12O19永磁铁氧体的大1%～3%，磁晶各向异性场Ha大16.8%，磁晶各向异性常数K1大16.7%，磁性能：Br=450mT，Hcj=384kA/m，(BH)max=38.6kJ/m3。
http://www.polymer.cn/research/dis_info960 |
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Hydrolytic Degradation of Biobased Poly(butylene succinate-co-furandicarboxylate) and Poly(butylene adipate-co-furandicarboxylate) Copolyesters under Mild Conditions
关键字：biodegradable; biopolymers and renewable polymers; degradation; polyesters
It is indispensable to investigate hydrolytic degradation behavior to develop novel (bio)degradable polyesters. Biobased and biodegradable copolyesters poly(butylene adipate-co-butylene furandicarboxylate) (PBAF) and poly(butylene succinate-co-butylene furandicarboxylate) (PBSF) with BF molar fraction (/BF) between 40 and 60% were synthesized in this study. The hydrolyt...
http://www.polymer.cn/research/sy_info19502 |
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polypropylene blends with poly (styrene-b-(ethylene-co-butylene)-b-styrene) under irradiation: A comparative investigation
关键字：Electron beam irradiation, Poly (styrene-b-(ethylene-co-butylene)-b-styrene) (SEBS), Polypropylene (PP), Crystallinity, Molecular weight
The aim of this paper is to investigate the stabilization of polypropylene in the poly (styrene-b-(ethyleneco-butylene)-b-styrene) (SEBS)/polypropylene (PP) blends under irradiation with respect to PP. The PP films, SEBS/PP films were subjected to electron beam irradiation and characterized by wide angle X-raydiffraction (WAXD), differential scanning calorimetry (DSC), gel permeation chromato...
http://www.polymer.cn/research/sy_info17627 |
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polypropylene blends with poly (styrene-b-(ethylene-co-butylene)-b-styrene) under irradiation: A comparative investigation
关键字：Electron beam irradiation, Poly (styrene-b-(ethylene-co-butylene)-b-styrene) (SEBS), Polypropylene (PP), Crystallinity, Molecular weight
The aim of this paper is to investigate the stabilization of polypropylene in the poly (styrene-b-(ethyleneco-butylene)-b-styrene) (SEBS)/polypropylene (PP) blends under irradiation with respect to PP. The PP films, SEBS/PP films were subjected to electron beam irradiation and characterized by wide angle X-raydiffraction (WAXD), differential scanning calorimetry (DSC), gel permeation chromato...
http://www.polymer.cn/research/sy_info17618 |
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