Studies on jute–asphalt composites

The tensile properties of jute make it a suitable raw material for asphalt overlay (A/O) fabric. In this study, the thermal stability of jute under conditions of asphalt overlaying process was investigated and the compatibility of jute with asphalt was assessed through experimentation on jute–asphalt composites under mechanical and hygral loads. Fourier transform infra red (FTIR) spectroscopic study revealed probable chemical bonding between jute and asphalt. The test for ascertaining the capability of asphalt encasement for protecting jute against biodegradation under enzymatic attack was found positive. A 6‐month hygral treatment, of the jute–asphalt composite, showed significant increase in modulus of the material. The results indicate that although the strength of jute deteriorates by about 10% under asphalt overlaying condition, the overall tensile behavior of jute fabric–asphalt composite material is considerably superior to that of the pure jute fabric, even under biological and extended hygral loading conditions. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci 2008     

浅谈天然彩棉织物的质量

从生产实践出发 ,阐述了彩棉纤维物理指标对彩棉纱的性能、织物的强力、色牢度及色泽的影响。     

上向分层尾砂充填法在仓上金矿的新应用

本文介绍了垂直矿体走向布置的上向分层尾砂充填采矿法新方案的特点及其在仓上金矿中厚矿体的具体应用。     

固井设备发动机防爆系统研究

针对目前固井设备不具备防爆功能的问题, 烟台杰瑞石油装备技术有限公司研制了JCMS210固井混浆橇中Detroit8V—71N发动机防爆气控系统。在对柴油发动机的引燃源进行分析后, 阐述了防爆气控系统设计方案, 给出气控系统工作原理图。室内试验和中海油田服务股份有限公司的现场使用证明, 这种防爆气控系统性能良好, 工作可靠, 能满足ZONE2的防爆要求, 解决了固井设备的防爆问题。     

甲壳素纤维/毛/绒双层织物的设计

通过分析甲壳素纤维各项性能,将其引入山羊绒产品中,对双层织物的设计进行探讨,并经过纺纱和织物试制,提出了设计与生产中应注意的问题,开发出了具有永久抗菌性的表层为羊绒、里层为甲壳素与改性羊毛混纺的系列产品.     

中性固色剂NF在分散／活性一浴热溶染色中的应用

本文对涤棉混纺织物在分散/活性染料同浴染色中采用碱固工艺与中性固色工艺作了较详细的对比试验,同时对中性固色剂及双氰胺的用量进行了优选组合,并对中性固色剂的效果进行了讨论。     

Achieving fair service with a hybrid scheduling scheme for CICQ switches

Providing performance guarantees for arriving traffic flows has become an important measure for today’s routing and switching systems. However, none of current scheduling algorithms built on CICQ (combined input and cross-point buffered) switches can provide flow level performance guarantees. Aiming at meeting this requirement, the feasibility of implementing flow level scheduling is discussed thoroughly. Then, based on the discussion, it comes up with a hybrid and stratified fair scheduling (HSFS) scheme, which is hierarchical and hybrid, for CICQ switches. With HSFS, each input port and output port can schedule variable length packets independently with a complexity of O(1). Theoretical analysis show that HSFS can provide delay bound, service rate and fair performance guarantees without speedup. Finally, we implement HSFS in SPES (switch performance evaluation system) to verify the analytical results.     

远红外丙纶的性能研究

系统测试了采用共混纺丝法研制出的远红外丙纶及织物的物理机械性能、远红外发射性能、保温性能、耐洗涤性能和抗菌性能，并对用远红外丙纶加工的护腿的医疗保健作用进行了临床检测。进而讨论了远红外丙纶及织物的医疗保健作用机理。     

锦纶66浸胶帘子布生产中的张力与控制

分析了帘子布生产中张力的作用及各区段的张力情况。张力应根据生产品种及浸胶帘子布的内在质量要求来选择，一般张力设定依据为拉伸区张力是干燥区张力的１倍，定型区张力是拉伸区张力的０．６５倍。同时应控制好各区段的温度，降低拉伸应力使锦纶６６帘子布拉伸均匀，提高帘子布的物理性能。