中国建筑涂料工业的现状及当前形势下的发展对策

本文详细分析了中国建筑涂料工业的现状和存在问题，并结合当前形势，提出了中国建筑涂料工业的发展对策。     

国内二氯苯生产现状及今后发展之我见

介绍了国内二氯苯3种不同生产式敢，规模及对二氯苯，邻二氯苯的精帛工艺，并分析了国内二氯苯生产装置中存在的问题，详细分析了对二氯苯，邻二氯苯的市场及应用情况，针对国内二氯苯的生产现状及与国外的差距提出了今后发展的建议。     

纳米碳酸钙和三元乙丙橡胶接枝马来酸酐协同增韧聚丙烯

纳米碳酸钙和三元乙丙橡胶接枝马来酸酐对聚丙烯具有显著的协同增韧作用，可能是因为纳米碳酸钙和三元乙丙橡胶接枝马来酸酐之间发生物理化学作用，形成一种新的核壳结构（硬核软壳），与一般的核壳增韧剂（硬壳软核）完全不同。     

Study of nucleation activity and application of a nucleating agent to copolypropylene

The influences of nucleating agent content on crystallization peak temperature, crystallization curve shape, crystallization onset temperature, and crystallinity of a copolypropylene were studied in detail by differential scanning calorimetry. The results showed that crystallization onset temperature and crystallization peak temperature increased 17°C–22°C and 15°C–19°C, respectively, with increasing nucleating agent content. The behavior of the nucleating agent showed excellent efficiency. But the shape of the crystallization curve broadened with increasing nucleating agent content, and the crystallinity came to an extremum when the nucleating agent content was 0.2%. These results generally differed from those for crystallization of i‐PP by a nucleating agent. Modification of copolypropylene was studied by use of a nucleating agent, and the characteristics of the effects of the nucleating agent on copolypropylene were mastered. The results showed that the hardness of a copolypropylene improved observably. So the abrasion resistance of biaxially oriented polypropylene (BOPP) film for cigarette packaging was improved by adopting the modified copolypropylene as the skin‐layer heat‐seal material of BOPP film. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101:3915–3919, 2006     

无线无源声表面波传感器研究进展

声表面波（SAW）传感器是一种无线无源传感器,在无源传感、适应恶劣环境等许多方面具有普通传感器不能实现的优点.阐述了声表面波器件的原理和结构特点,并对射频信号收发、信息处理等关键技术进行详细论述,综述了近些年国内外的相关研究现状,并进行了总结与展望.     

一种林业手持式多功能测树仪设计

针对森林调查对便携式测量设备自动化和集成化的需求,设计了一种集测高器、角规和标准蓄积量计算功能于一体,具有测量、数据存储、计算等多种功能的手持式多功能电子测树仪GForest。该仪器通过采样控制算法实现对测高器防抖动设计,采用计数器存储并控制角规计数结果,提供USB接口同PC和移动智能终端设备进行数据共享,旨在解决目前森林地面调查数据采集硬件设备信息化与数据采集软件发展不同步的问题,大幅减少了外业调查中手工数据记录和录入的工作,提高了野外数据采集的效率。经实测验证:GForest测得的立木高度与实际值的平均误差为4%,与进口同类设备精度持平,同时还具有角规绕测计数与控制等实用功能,且具有明显的成本优势,适合在行业内推广应用。     

聚氯乙烯(PVC)共混合金──(Ⅰ)聚氯乙烯(PVC)基础知识

本讲主要介绍聚氯乙烯（PVC）的基础知识，如PVC发展史、生产情况、型号、性能、用途及改性的必要性等，使读者对PVC的基本情况有一个大概的了解。     

炭分子筛概述

阐述了炭分子筛分离的原理，并分别从其制备原料、制备方法、产品用途等方面综述了近年来炭分子筛的新进展。     

粉煤灰饰面玻璃的研制

利用粉煤灰可制得粉煤灰饰面玻璃，与粉煤灰微晶玻璃相比，其优点是粉煤灰用量高，能耗低，成本低，装饰效果好。本文介绍了实验室与工业性扩大试验的结果，并对生产工艺中的几个问题作了讨论。     

Propylene epoxidation in a microreactor with electric heating

Gas phase propylene epoxidation on gold catalysts has attracted wide attention from industry and academia due to its high selectivity. However, it suffers from low propylene conversion and rapid catalyst deactivation. Experiments showed that propylene conversion could be increased by raising H₂, O₂, or C₃H₆ concentration in the feed, but the feed compositions were within the explosion limit. It was also shown that the activity of the used catalyst could be fully recovered, but the regeneration temperature was 280 °C, much higher than that for reaction. Therefore a microchannel reactor was devised to suppress explosion and was constructed with Fecralloy, to raise the temperature rapidly for catalyst regeneration by electric heating. In two minutes the temperature of the reactor could be raised from 50 to 300 °C. Catalysts were coated on the alloy belt by dip coating, and the performance of the reactor was evaluated under different operating conditions. Results showed that in the microreactor the overall reaction rate was controlled mainly by the intrinsic reaction rate, and also influenced by film diffusion to a certain extent. The deactivated catalyst was regenerated in the microchannel reactor and the activity was fully recovered.