最新刊期
卷 16 ， 期 6 ， 2003
- 摘要：Poly (trimethylene terephthalate) (PTT) ,a new material,is a promising polymer with potential applications. However,the studies and applications of PTT in nonfiber fields are at its initial stage. The evolution of PTT is introduced in brief,and the characteristic of its properties and structures is discussed in detail. The advance of the research and applications of PTT in nonfiber fields are primarily reviewed.关键词：Poly (trimethylene terephthalate);Blend modification;Miscibility
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发布时间：2022-09-18 - 摘要：Epoxy resin (EP) are known as brittle thermosetting polymers which need to be toughened for various applications. Many new studies on the toughness of EP have been reported in recent years,so some of them are introduced in detail in this paper for further studies of EP.关键词：Epoxy resin;Toughening;Blending modification
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发布时间：2022-09-18 - 摘要：Perfluoroacrylates polymers exhibit high thermal stability,enhanced chemical resistance and low surface energy compared to their non-fluorinated analogs. In terms of performance and environmental issues ,they have been used as water and oil resistant coating materials in the textile,leather and paper industry. They are also employed in surface modification and protection of stone,concrete,glass and other inorganic substrates,especially in the historical relic. This review covers of the pioneering works on the characteristics, synthesis and application of perfluoroacrylates polymer emulsions.关键词：Perfluoroacrylates polymer;Emulsion polymerization;Synthesis;Application
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发布时间：2022-09-18 - 摘要：Polyphosphate esters are a kind of biodegradable polymer with good biological compatibility, and their structures are easily modified and functionalized.They have extensive applications in medical field, such as drug controlled release material,tissue engineering material and developer used for creature organ.In this paper,the recent progresses in polyphosphate esters medical materials are reviewed.Especially the syntheses and applications of polyphosphate esters for drug controlled release material are introduced in detail.With the development of syntheses research on polyphosphate esters,their applications in medical field will be more wonderful and interesting.关键词：Polyphosphate ester;Medical material;Drug controlled release;Synthesis;Application
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发布时间：2022-09-18 - 摘要：Polyimide (PI) has been considered to be suitable matrix polymers for advanced technological applications in the microelectronics and aircraft industries,because it possess excellent chemical,physical,thermal and mechanical properties.With the increasing and urgent market demand to produce higher-performance electronic devices with smaller size,lighter weight and better quality,the applications of PI are limited owing its high coefficient of thermal expansion and moisture absorption in higher-performance electronic devices at high temperature.To date,one of the best ways to improve properties of PI is to introduce nanometer materials into the PI matrix and yield polyimide nanocomposites of inorganic nanometer hybrid. In this paper,the preparation methods of polyimide hybrid materials were illustrated firstly.Then the normal types,properties and applications of polyimide hybrid materials were introduced.In addition,the tendency of polyimlde hybrid materials was predicted.关键词：Polymide;Hybrid materials;Nanocomposite
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发布时间：2022-09-18 - 摘要：The recent development in miscibility,crystallization,thermal properties,processability,mechanical properties and biodegradability of poly (β-hydroxybutyrate) or poly (β-hydroxybutyrate-co-β-hydroxyvalerate) with biodegradable polymers blends are reviewed in present article. Performance of poly (β-hydroxybutyrate) and poly (β-hydroxybutyrate-co-β-hydroxyvalerate) had been improved significantly in these blends.关键词：Poly (β-hydroxybutyrate);Poly (β-hydroxybutyrate-co-β-hydroxyvalerate);Biodegradable polymers;Polymer blends
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发布时间：2022-09-18 - 摘要：Electrospinning is a simple and low-cost technology to prepare ultrafine polymer fibers. The concept and research progress of electrospinning,and applications of electrospun fibers are described in detail. Brilliant prospect is made of the applications of electrospun ultrafine fibers in various fields.关键词：Electrospinning;Ultrafine fibers;Applications
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发布时间：2022-09-18 - 摘要：A novel class of materials exhibiting negative Poisson’s ratio—a popular research field of materials science in recent years,is presented. By analyzing the microstructure and deformation mechanism of negative Poisson’s ratio materials and comparing with the conventional polymer materials,detailed interpretation of special physical properties are given in this paper. Meanwhile,it should be pointed out that this kind of materials has the bright prospect of applications and practical significance.关键词：Negative Poisson’s ratio;Microstructure;Deformation mechanism
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发布时间：2022-09-18 - 摘要：Besides the common macromonomers containing C=C double bond as the end group,there are other macromonomers such as the undergoing ring-opening polymerization,oxidation polymerization and methanesis ring-opening polymerization. The synthesis methods of macromonomers are introduced in this review.关键词：Macromonomers;Living polymerization;Preparation
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发布时间：2022-09-18 - 摘要：p-Phenylene terephthalamid (PPTA) fiber is a kind of high tenacity and high modulus fiber, which is prouced by dry-wet spinning through liquid crystal solution and is the most important high-tech fiber currently. New technique and varieties of PPTA fiber have been developing by the factories and institutes of the same field to make it better properties and reduce the cost as low as possible with the increasing demand of PPTA fiber and market competition. In this paper,the new technologies and varieties having different special function of the PPTA fiber are reviewed and the structure,property and developing prospect of PPTA fiber are introduced in brief.关键词：Poly (p-Phenylene terephthalamid) fiber;Aramid fiber;Aromatic polyamide fiber
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发布时间：2022-09-18 - 摘要：The CAE technology is very important in the design of the gas-assisted injection mold. The models of the viscous and mathematics when the melt fluids in the mold cavity during filling and pressure was hold during the pack process were described. The way that the mathematics model was reasonable predigested was introduced. The gas-assisted molding for the automobile bumper mold was simulated by C-MOLD which is one of the CAE software. The effect and process of the gas filling were optimized. The appeal quality and the dynamic capacity were improved and the proportion of the first-try was increased.关键词：Gas-assisted injection molding;Basic theory;CAE;Optimization design;Automobile bumper
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发布时间：2022-09-18 - 摘要：The definition of breadth parameter of macromolecular weight distribution,together with the conclusion as presented by Zhang Xiao-yun in the article entitled "A little about averrage molecular weight and polydispersity of polymer in teaching" ,deserved to be discussed. In this paper the expression of breadth parameter of molecular weight distribution with statistical sense was introduced. The interrelationships among four different average molecular weights are briefly discussed.关键词：Breadth parameter of molecular weight distribution;Polydispersity;Average molecular weight;Probability statistics
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发布时间：2022-09-18
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