不饱和聚酯树脂光固化工艺的研究-光引发剂浓度

本文选用TPO、651两种光引发剂，分别配制引发剂浓度为0．25、0．5、1、2wt％的不饱和聚酯体系。通过测定光固化试样的显微硬度分析光引发剂浓度对固化程度的影响。结果表明，提高引发剂浓度能抑制氧阻聚的作用，但对于较厚的试样，引发剂浓度过高会导致固化不完全。     

含CO2气体混合物在60℃时的混合性质

测定了６０℃和２－６００ｂａｒ时由ＣＯ２和Ｈｅ、Ａｒ、ＳＦ６以及ＣＨＦ３组成的等分子二元混合物的压缩因子，根据纯物质和混合物的压缩因子计算了压力混合效应和过剩体积。对于真实气体混合性质的描述，本文采用五参数的ＢＡＣＫ方程，方程计算值与实验值符合较好。     

Evaluation of two cooling systems under a firefighter coverall

Firemen often suffer from heat strain. This study investigated two chest cooling systems for use under a firefighting suit. In nine male subjects, a vest with water soaked cooling pads and a vest with water perfused tubes were compared to a control condition. Subjects performed 30 min walking and 10 min recovery in hot conditions, while physiological and perceptual parameters were measured. No differences were observed in heart rate and rectal temperature, but scapular skin temperature and fluid loss were lower using the perfused vest. Thermal sensation was cooler for the perfused vest than for the other conditions, while the cool pad vest felt initially cooler than control. However, comfort and RPE scores were similar. We conclude that the cooling effect of both tested systems, mainly providing a (temporally) cooler thermal sensation, was limited and did not meet the expectations.     

电镀综合废水处理技术

电镀行业普遍存在废水处理不够彻底的排放问题。针对这种现状，本文提出首先必须对生产线上的电镀废液进行种类及清污分流，并应用化学絮凝—气浮法一体化的处理技术对综合废水进行处理。试运行情况表明，该处理技术易于控制、占地面积小、运行费用低，处理后的废水可以达到GB8978—1996二级标准，去除率在96％以上，并有65％以上的处理水可以回收利用。     

氰化亚铜生产新工艺研究

在氯化钠浓溶液中通氯气将铜氧化生成NaCuCl2，再加入氰化钠溶液生成氰化亚铜沉淀。沉淀经氯化钠浓溶液洗涤和水洗干燥后即得产品。工艺生产周期短，设备简单，成本低，产品质量高，无废气，废渣和有毒废水排放。     

[(2Y-ZrO2)-Al2O3]纳米微粉制备的研究

本研究采用SoL-GeL法和自动引燃法制备[(2Y-ZrO)-AlO]超微粉,并进行了微观结构分析。为比对223两种超微粉性能的差异,采用注浆成型法制备样品,并分别测定抗折强度,断裂韧性和烧结温度。结果表明:自动引燃制备的ZrO-AlO掺稀土纳米微粉,工艺简单、细小均匀,由其烧造的样品较SoL-GeL法样品抗弯强度高,223断裂韧性好,烧结温度低。     

MA-AA聚合物陶瓷助磨剂的助磨机理研究

通过测定MA-AA对陶瓷瘠性原料(石英)以及含粘土的陶瓷塑性原料的助磨作用,以及MA-AA对陶瓷塑性原料泥浆 的粘度和ζ-电位的影响规律,并结合试样的红外光谱分析结果,研究了MA-AA对陶瓷原料的助磨机理。结果表明: MA-AA对陶瓷原料的助磨作用是由于其同时具有降低颗粒表面硬度和调节泥浆流变性两种作用。     

Effect of the matrix crystallinity on the percolation threshold and dielectric behavior in percolative composites

Through the use of polyethylenes with different crystallinities as matrices, the effects of the matrix crystallinity on the percolation threshold and dielectric behavior of percolative composites have been investigated. The results suggest that the percolation threshold is negatively related to the matrix crystallinity, whereas the enhancement of the dielectric constant is positively related to the matrix crystallinity. A two‐dimensional diagram is proposed to illustrate such relationships. In addition, it has been found that the insulator–conductor transition is much flatter in low‐crystallinity‐matrix‐based composites, and this may be favorable for preparing threshold composites with a high dielectric constant and a low loss tangent. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007     

快干型芭蕉芋淀粉粘合剂的制备

介绍一种快干型芭蕉芋淀粉粘合剂，它特别适合于粘结瓦楞纸板，其制法是芭蕉芋等直链淀粉含量较代低的天然植物淀粉为原料，经氧化、糊化、交联等步骤而制得；产品结力强，产品性能稳定，贮存期长。     

民族文化差异与日用陶瓷的文化营销

在经济全球化的背景下,由于民族文化、区域文化差异性和多样性的存在,日用陶瓷企业在开展国际营销活动时需要一个行之有效的营销策略。本文通过分析民族文化差异,为日用陶瓷企业实施国际文化营销提供一些建议。