中国涂料现状及今后发展热点(一)

综述了目前中国涂料业的发展概况,并介绍了今后发展趋势和研究热点──防腐蚀涂料、卷材涂料、功能涂料、绿色木器涂料和粉末涂料等5种涂料。     

《赤山湖湖条》解读与赤山湖管理分析

历史上赤山湖作为秦淮河流域的重要水利枢纽,它不仅承担着湖区周边及秦淮河下游的灌溉防洪功能,还在长期用水管理过程中,形成以"五尺水则"为代表的有效管理制度。本文通过对《赤山湖湖条》内容的解读,从工程管理、用水管理和经费管理等方面对赤山湖的水利管理进行历史考察,探究赤山湖功能发挥与湖区管理体系密不可分的关系,为现代水利工程尤其是河湖工程管理提供一定的借鉴和参考。     

改性木粉/PVC复合材料的研究进展

概述了PVC木塑复合材料的发展和背景与性能。简述了木质材料的性质和木粉改性的方法,如物理方法和化学方法。介绍了木塑复合材料的生产流程、成型方法(模压成型、挤出成型、注射成型及其成型设备,讨论了对工艺参数的一些要求。指出目前国内PVC木塑复合材料发展存在的一些问题,并指明了PVC木塑复合材料的应用前景。     

水性木器涂料的研究进展

对水性聚氨酯和水性丙烯酸木器涂料进行了详细介绍。分析了水性木器涂料的研究现状及存在问题，提出了相关的发展趋势和研究方向。     

几种云南木材液体浸渍行为的研究

研究了几种云南木材在水和有机液体中的浸渍行为 ,探讨了浸渍液体的溶解度参数、木材种类和密度、助浸剂、浸渍时间和压力以及电子束辐射 (EBI)等因素对木材的液体浸渍行为的影响     

木质素胶粘剂的开发和应用

木质素作为植物中蕴藏量仅次于纤维素的高聚物,是一种廉价易得,储量丰富,环境友好的可再生天然资源。文章主要就木质素的结构和性能以及在各类用途胶粘剂中的应用作了详细的概述。     

Lignin‐based polycondensation resins for wood adhesives

Lignin‐based wood adhesives are obtained that satisfy the requirements of relevant international standards for the manufacture of exterior‐grade wood particleboard. Formulations based on low molecular mass lignin and presenting an increase in the relative proportion of reactive points yield better results than the higher molecular mass lignin used in the past. These lignins allow a higher proportion of hydroxymethylation during preparation of methylolated lignins. These lignin‐based adhesives also yield acceptable results at particleboard pressing times that are sufficiently low to be of industrial significance. Lignin‐based wood adhesives, in which a nonvolatile nontoxic aldehyde (glyoxal) is substituted for formaldehyde in their preparation, are prepared and tested for application to wood panels such as particleboard. The adhesives yield good internal bond strength results for the panels, which are good enough to comfortably pass relevant international standard specifications for exterior‐grade panels. The adhesives also show sufficient reactivity to yield panels in press times comparable to that of formaldehyde‐based commercial adhesives. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 1690–1699, 2007     

广西古代陶器组成的研究

桂林甑皮岩遗址发现了距今９２４０－１０３７０年的陶片，证实了广西地区从新石器以来就成为我国古代陶器的发源地之一。本工作研究了广西出土的４４块陶片，测定了陶胎的化学和矿物组成。由此表面广西古陶的ＳｉＯ２含量随时代变迁而逐渐增加，而Ｆｅ２Ｏ３含量在明显下降，Ａｌ２Ｏ３的含量也有降低的趋势。     

Porous TiC Ceramics Derived from Wood Template

A porous TiC ceramic with a woodlike structure was prepared from wood template through tetrabutyl titanate vacuum-infiltration. The tetrabutyl titanate was first decomposed to TiO₂, and then in-situ reaction between TiO₂ and carbon template took place in the cellular wall at high sintering temperature. The original structure of wood was retained. In addition, the dimensional shrinkage of the pores after the removal of the residual carbon was different according to the difference of the wood density.     

Si3N4结合SiC窑具的研制及应用

本文根据试验确定了工艺路线,介绍了氯化烧成机理、原材料的选择及生产工艺对制品的影响,生产出的制品技术指标先进,性能优良。作为更新换代的新型窑具材料具有显著的经济效益和社会效益,有着广泛的使用价值。