纳米SiOx/环氧树脂复合材料性能研究

以纳米SiOx为改性材料，采用浇铸工艺制备了纳米SiOx／环氧树脂复合材料。探讨了纳米复合材料的分散工艺方法以及不同的纳米SiOx含量对复合材料力学性能和耐热性能的影响。结果表明，当纳米材料质量分数为1％时，复合材料的分散效果好，拉伸强度和断裂伸长率提高到3倍，无缺口冲击强度达11．6kJ/m^2，洛氏硬度和耐热性能也有提高。     

Swelling behavior of poly(sodium acrylate)/kaoline superabsorbent composite

Using partly neutralized acrylic acid as monomer, kaoline ultrafine powder as filler and N,N′‐(dimethyl)acrylamide as crosslink agent, poly(sodium acrylate)/kaoline superabsorbent composite was synthesized by aqueous solution polymerization method. Using the superabsorbent composite as collagen, a hydrogel was prepared. The influence of the neutralization degree of superabsorbent collagen, the compositions, the concentration, and the pH value of exterior solution on the swelling behavior of the hydrogel was investigated. It was found that the swelling capability of the hydrogel depended on the groups on the collagen. The swelling capability of the hydrogel relied on the ionic intensity, molecular polarity, molecular volume, as well as the concentration of exterior solution. When the pH value of exterior solution was equal to seven, the hydrogel has a maximum swelling value of 800 times. POLYM. ENG. SCI. 46:324–328, 2006. © 2006 Society of Plastics Engineers     

Polyamidoamine dendrimers as curing agents: The optimum polyamidoamine concentration selected by dynamic torsional vibration method and thermogravimetric analyses

Polyamidoamine (PAMAM) dendrimers were investigated as curing agents in bisphenol A epoxy resin systems. The cure behavior of epoxy resin/PAMAM at varying components was investigated by a dynamic torsional vibration method (DTVM); the thermal behavior of the materials was characterized by means of thermogravimetric (TGA) analyses. The DTVM results show that 10/100 parts of the resin (phr) PAMAM was the optimum concentration for 1.0, 3.0, and 5.0 G PAMAM dendrimers/resin systems in our experiment. Also, the TGA results agreed with the conclusions made by the DTVM. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 1430–1434, 2007     

Studies on grafting of acrylic acid onto polypropylene melt‐blown nonwovens induced by electron‐beam preirradiation

We report the graft copolymerization of acrylic acid onto the polypropylene (PP) melt‐blown nonwovens induced by electron beam (EB) preirradiation in this article. The occurrence of the graft copolymerization was confirmed by means of XPS, FTIR, and SEM. The effects of preirradiation dose, monomer concentration, bath ratio, reaction time, and temperature on the graft ratio were investigated. The water conservation, water absorption rate, and K⁺ exchange capacity were also determined on the grafted PP melt‐blown nonwovens, which showed that EB preirradiation‐induced grafting was an effective way to improve the hydrophicility of PP melt‐blown nonwovens. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 4971–4977, 2006     

天然碱代替纯碱的磷矿选矿试验

经过煅烧的天然碱可以在浮选作业中代替纯碱使用。王集磷矿一、三层混合矿和宁夏贺兰山磷矿使用这种煅烧天然碱,浮选指标均优于原使用纯碱的工艺。该药剂来源广,价格低,可以为企业带来较大的经济效益。     

艺术设计教育的启蒙辨析：艺术的另一种本体论视角演进

从设计的历史叙事角度来看,艺术设计教育呈现出共时性和历史性的形态存在,无论是从＂绘画教育＂到＂图案教育＂的观念变化,还是21世纪在艺术家身上发展出来的具有艺术和技艺两个维度的实践活动,它所构置具有强大的时空涵容来描摹着设计教育自我生命的生成、情感视角,显示出宁静而又现实的民族教育观念遗存,设计教育从专业发展以来的每一种思考和洞悉都是在本土人文历史观的基础上的内涵启蒙进程。     

重金属在宽叶香蒲人工湿地系统中的分布与积累

本文通过对广东韶关凡口宽叶香蒲（Typha latifolia)人工湿地系统的进出水口，土壤剖面及四种优势植物体各部分器官中Pb,Zn,Cu和Cd含量进行分析。结果表明；重金属主要库存于土壤中。从水平上看，全量的重金属含量从进水口到出水口呈上升趋势，而有效态则相反；从土壤剖面的垂直分布上看，全量和有效态重金属含量都随土壤深度的增加而递减，四种植物都具有较强的吸收和富集重金属的能力，且主要富集在植物的地下部分。     

氯霉素废水的处理

本试验对氯霉素废水的处理分浓废水和淡废水两个部分，浓度水采 烧法处理，淡废水采用还原一氧化二级物化法处理。结果都能达到国家和上海市的排放标准，且工业上可行，投资上节省。     

智能型煤电钻综合保护装置的软件设计

在煤炭开采前需要进行瓦斯抽放,瓦斯抽放需要用煤电钻打孔。煤炭安全规程规定煤电钻必须配备综合保护装置。首先分析了智能型煤电钻综合保护装置研究的背景,然后重点描述了智能型煤电钻综合保护装置的软件设计。     

MATLAB飞机舱音语音增强、时频分析和GUI设计

舱音记录器中的声信息对失事飞机原因调查十分重要。在分析舱音声信息的特殊性和MATLAB数学软件强大功能和优势基础上,从录制的多个典型舱音中选取其中的"火警警铃"舱音样本为例,设计了MATLAB环境的载入程序,避免了类似于C语言的循环语句等编程复杂等问题,完成舱音信息的时频分析与处理,得到期望的效果。最后在MATLAB图形用户界面(GUI)设计出适合人机对话的操作流程,使得舱音分析过程简单、实用,并在典型舱音分析中得到验证。