最新刊期
卷 19 ， 期 12 ， 2006
- 摘要：An overview of the influencing factor to the tribological properties of ultra high molecular weight polyethylene(UHMWPE) and the modification methods is presented.To sum up,the influencing factor conclude the kinds of filler,lubricant,contact face,sliding track,operating parameter and some other factors.Physical and chemical method can better the tribology properties.关键词：Medical biomaterials;Ultra high molecular weight polyethylene (UHMWPE);Friction;Wear
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发布时间：2022-09-18 - 摘要：Applications of ionic liquid as electrolytes in conducting polymers have been reviewed .Ionic liquids can be used in synthesis, electrochemical behavior testing of conducting polymers films .Furthermore, it is a good electrolyte used in electrochemical devices ( electrochemical capacitance, light-emitting electrochemical cell, actuator, photovoltaic devices) constructed by conducting polymers .In addition, application prospect for ionic liquids is also presented .关键词：Ionic liquids;Conducting polymers;Synthesis;Electrochemical devices
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发布时间：2022-09-18 - 摘要：The article comments on the research and application of binary or multi-component catalyst systems containing metallocene catalysts for olefin polymerization.These catalyst systems are generally used to produce polyolefins having broad molecular weight distributions,especially polyethylene.Some systems are used to produce branched or block polymers.Till now,binary or multi-component catalyst systems have been emerging as an important tool for molecular tailoring and material design.关键词：Metallocene catalyst;Binary catalyst systems;Multi-catalyst systems
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发布时间：2022-09-18 - 摘要：Dental filling materials contain resin of polymer,inorganic filler and photoinitiator system,which are used in dental restoration.Dental filling materials and testing methods are summarized and the emphasis is especially focused on the polymeric monomers.关键词：Dental filling composites;Polymeric monomers;Cholic acid
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发布时间：2022-09-18 - 摘要：RTM polyimide matrix resins and composites mainly including the modified PMR polyimide and prepolymer synthesized with phenylethynyl agent were reviewed in this paper .The imide oligomers synthesized with phenylethynyl agent showed low melt viscosity and high melt stability, and the cured resin and composite exhibited high thermal stability and good mechanical property .The chemical synthesis, structure, properties of the matrix resins and composites were discussed .Their applications in aerospace and electronic industry were also presented .关键词：Polyimide;RTM;Resins
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发布时间：2022-09-18 - 摘要：36 references were given to review the fibrous materials for biomedical application and their modification.Biologically-derived macromolecules and synthetic polymers including nondegradable and degradable polymers could be prepared into fibrous forms for surgical suture,wound dressings and tissue engineering scaffolds. Methods including polymer blending,crosslinking and surface modification of fibers such as plasma treatment,surface chemical reaction and polymer grafting were used to improve the mechanical properties,biocompatibility,cell adhesion of fibers and to promote new tissue formation around fibrous materials.关键词：Polymer fiber;Surgical suture;Wound dressing;Tissue engineering;Fiber modification
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发布时间：2022-09-18 - 摘要：Particle-filled polymer composites with high dielectric constant can be used widely in electrical and electric industry since polymer/ceramic particle composites utilize easy fabrication,low dielectric loss and high breakdown strength of polymers as well as high dielectric constant of ceramics,and polymer filled with metal particles has good dielectric properties.In this paper,the research of dielectric mixture theory are reviewed,the composition, fabrication and influencing factor of dielectric properties of polymer/particle composites are also discussed with emphasis on the role of interfaces.At last,the prospects of the possible developments in the future are pointed out.关键词：Particles;Polymer;Ceramic;Metal;High dielectric properties
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发布时间：2022-09-18 - 摘要：The molecular long chain branch structure of metallocene polyethylene has great effects on its rheological behavior, long chain branch can significantly enhance melt elasticity and shear thinning .The foundation of metallocene polyethylene molecular chain model has been introduced in this paper, the developments in molecular chain structure model of metallocene polyethylene in recent years are reviewed, relevant long chain branch structure models and their relationships with rheological properties are expatiated too .关键词：Metallocene polyenthylene;Long chain branching;Rheology;Model
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发布时间：2022-09-18 - 摘要：Poly (lactic acid)(PLA)is a biocompatible and biodegradable linear aliphatic thermoplastic and environmentally benign material .The crystallinity of PLA has great influence on its mechanical properties and degradation rate , so the crystallization behavior of PLA has also attractedmany researchers to widely research .In this paper , the progress of PLA and its blends and copolymers was reviewed based on the crystallization behavior .关键词：Poly (lactic acid);Blend;Copolymer;Crystallization
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发布时间：2022-09-18 - 摘要：Development and the rescent research of cyclic aromatic oligomers (CAOs) were presented.The typical synthesis method and applications of CAOs were introduced.Moreover the development direction of CAOs was pointed out.关键词：Cyclic oligomers;Synthesis;Ring opening polymerization;Application
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发布时间：2022-09-18 - 摘要：In recent progress in chemical modification of hemicelluloses has been reviewed in this article , including esterification and etherification .The chemical modification of hemicellulose was introduced in the aspects of the heterogeneous phase and homogeneous phase .In the end , the new progress of chemical modification of hemicellulose was mentioned .关键词：Hemicelluloses;Chemical modification;Progress
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发布时间：2022-09-18 - 摘要：This review focus on the characteristics of Solid-state NMR and the advances in the analysis of macromolecular materials .The review emphasized its applications in structure characterization and reaction monitoring , studies of mechanical properties , dynamics andMulticomponent polymers .关键词：Solid-state NMR;Macromolelular materials;Cross polarization;Magic angle spinning
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发布时间：2022-09-18 - 摘要：The classification,preparation and the factors that influence the release behavior of the biodegradable polymer drug film are reviewed in this paper,providing references for the research and development of preparation of biodegradable drug film.关键词：Biodegradable Polymer Drug film;Controlled release
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发布时间：2022-09-18 - 摘要：Progress of flame retardants and built system for polyethylene are summarized in this paper,the halogen-free flame retardants are introduced in detail.The developing trends of flame retarded modification of polyethylene are analyzed briefly.关键词：Polyethylene;Flame retardant;Halogen-free flame retardant
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发布时间：2022-09-18 - 摘要：In this paper the requirement of resin suited to Vacuum Assisted Resin Transfer Molding (VARTM) will be introduced , application condition at home and in abroad also be included .The resin suited to VARTM will be described in detail .关键词：VARTM;Epoxy;Vinyl ester;Phenolics
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发布时间：2022-09-18
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