水基丙烯酸改性聚酰胺皮革涂饰剂的研究

合成了一种水溶性尼龙，并在水溶液中以丙烯酸类单体对其进行接枝改性研究，合成出一种丙烯酸发生聚酰胺乳液，具有很好的成膜性，可作为皮革涂饰剂使用。     

NomexⅢA防护服在军队中的应用

本文叙述杜邦公司NomexⅢA纤维的特性以及应用 ,着重介绍了此纤维在美军防护服领域的应用     

CF/PA12 composite femoral stems: Manufacturing and properties

The fabrication process for a novel carbon fiber-reinforced polymer (polyamide 12) composite femoral stem using inflatable bladder molding was studied. Effect of processing temperature, holding time and applied internal pressure on the consolidation quality of the composite was investigated. Consolidation quality was evaluated by density and void content measurements and scanning electron microscope analysis. As expected, void content (porosities) and presence of large resin pockets were found to increase for lower processing temperature, holding time and applied pressure. Crystallinity as well as melting temperatures measured using differential scanning calorimetry could be related to molding conditions. A progressive reduction of the previous thermal history (crystalline peak of neat composite) and an increase in crystallinity were obtained for higher molding temperature. Static compression testing with void content analysis of molded specimens was used to determine optimal molding conditions. The composite structure molded showed compressive modulus close to cortical bone’s. Compression load at failure of composites molded in optimal conditions were found to be three times higher than those of femoral bone for jumping on one leg or 10 times those for normal gait. The molded composite structure appears to be an excellent candidate for femoral stems used in total hip arthroplasty.     

The viscoelastic bending stiffness of fiber-reinforced composite Ilizarov C-rings

In order to optimize the design of unidirectional fiber-reinforced composite (Ilizarov) C-rings, the viscoelastic load relaxation behavior was analyzed under a point load. Initially, the deflection and bending stiffness were calculated from the Castigliano theorem and the Euler–Bernoulli bending theory for the elastic solution. The viscoelastic relaxation and creep behavior were then derived from the elastic solution by using the correspondence theorem. Besides the orthotropic mechanical properties of the composite, the asymmetric mechanical properties due to different tensile and compressive properties were also considered. With the exception of the deviation, which was affected by a relatively large thickness ratio to the radius of the C-ring, the calculated relaxation showed good agreement with the experimental result.     

Dechema corrosion handbook Vol. 3 Edited by D. Behrens,VCH Verlagsgesellschaft,Weinheim Frankfurt am Main, 1988. pp. ix + 282, price £286.00 (subscription price to series £238.00 per volume) ISBN 3-527-26654-2

4-Phenyl-5-aminopyrazole 2 obtained from phenylcyanoacetaldehyde 1 and hydrazine hydrate reacted with diethyl malonate to give 3-phenyl-5,7-dioxopyrazolo[1,5-a]pyrimidine 3 , used as the key compound in the synthesis of arylazo dyes. The key compound 3 was coupled with various aryldiazonium salts 4 to yield 3-phenyl-7-hydroxy-6-arylazopyrazolo[1,5-a]pyrimid-5-ones 5. The resulting arylazo dyes (5) were refluxed in phosphorus oxychloride to give 3-phenyl-5,7-dichloro-6-arylazo-pyrazolo[1,5-a]pyrimidines 6 , which subsequently reacted with refluxing morpholine and piperidine to yield 3-phenyl-5,7-bis(morpholino and piperidino)-6-aryiazopyrazolo[1,5-a]pyrimidines 7. The arylazo dyes 5 and 7 were applied to polyester fibres as disperse dyes and the arylazo dyes 6 were applied to polyamide fibres as disperse reactive dyes. The spectral and dyeing properties of the dyes were studied.     

芳烃抽提生产问题剖析

介绍了大庆芳烃抽提装置工艺流程及特点，指出了试生产中影响装置稳定运行的因素，通过理论分析采取了相应的改造措施，使装置达到连续稳定运行。     

氮纶纤维分散染料染色性能探讨

通过对几种结构类型分散染料氨纶纤维上染率的测定，结合分散染料的IOB（无机/有机）值，探讨了分散染料结构与氨纶染色性的关系，系统测试了影响分散染料染氨纶的主要工艺参数，提出氨纶染色优化工艺条件。     

Insights into process–structure–property relationships of poly(ethylene terephthalate) industrial yarns by synchrotron radiation WAXD and SAXS

Synchrotron radiation wide angle X‐ray diffraction (WAXD) and small angle X‐ray scattering (SAXS) were performed to study the structures of four typical types of poly(ethylene terephthalate) (PET) industrial yarns. Three‐dimensional structural models of the yarns and comprehensive insights into the process–structure–property relationships were gained. High spinning speed, low draw ratio, and high heat‐setting temperatures lead to HMLS yarns with high crystallinity, high amorphous orientation, densely packed lamellar stacks, and a small tilting angle of crystalline lamellae. High draw ratio tends to result in PET industrial yarns with large long period and a large tilting angle of lamellae. Heat‐setting process has a significant influence on the amorphous orientation and crystalline structures, such as crystallinity, crystallite size, as well as crystal grain number. Compared with other structure characteristics, amorphous orientation plays a more important role in determining the tenacity, initial modulus, part load elongation, ultimate elongation, as well as shrinkage of PET industrial yarns. The crystal grain number seems to have an effect on the initial modulus, while the long period influences the elongation of the yarns to some extent. In addition, the small tilting angle of crystalline lamellae may relate to the dimensional stability of PET yarns. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 42512.