天然橡胶改性废弃塑料制备不干胶的研究

利用废弃聚苯乙烯泡沫塑料为主要基料、掺入少量天然橡胶改性,通过对溶剂、增塑剂、乳化剂及增稠剂的筛选,研制出了一种低成本的不干胶,对该不干胶的配方进行优化选择,对其性能指标进行了测试,测试结果表明该不干胶的粘附力大,耐水性能好,能反复粘贴,能耐酸、耐碱、耐冻,同时原料易得。     

XBG系列保温材料的制备与应用

介绍了ＸＢＧ系列复合再生型无污染保温材料的研制、施工、回收再生及产品的特点和用途．实际应用表明，该产品安全可靠，保温效果显著，施工方便，可回收利用     

基于CFD的注采管柱接头修复胶液渗流规律研究*

为探讨注胶方法修复井下注采管柱螺纹接头缝隙的可行性,采用计算流体动力学欧拉-欧拉多相流方法构建胶液在注采管柱接头缝隙内的渗流流动数值仿真模型,模拟注胶压力驱动下修复胶液在管柱接头螺纹缝隙内的渗流过程,通过多工况条件下胶液在螺纹缝隙内的渗流数值模拟,研究注胶压力、胶液密度和螺纹失效缝隙对胶液渗流过程的影响。结果表明:基于欧拉-欧拉多相流的数值模型可有效预测胶液在管柱接头缝隙内的流动;胶液在狭缝内的渗流深度与注胶压力呈正比;胶液渗流深度与胶液密度呈反比;胶液渗流深度与螺纹缝隙尺寸呈正比。     

枝孢霉在敦煌壁画颜料变色过程中的作用

从敦煌莫高窟分离的一株枝孢霉（Cladosporiumsp.）分别接种到骨胶溶液、骨胶铅丹混合涂层、铅丹骨胶溶液及模拟的壁画色板,并在一定条件下培养后,进行分析测定结果表明：该菌株对骨胶有较强的降解作用,骨胶的降解使铅丹（Ph3O4）失去保护作用,稳定性下降;在含铅丹的骨胶液中培养时可溶性铅含量[ρ（Ph2 ）=3．17mp／L]明显高于未接种的CK[ρ（Ph2 ）=22．9mgiL];对模拟色板和混合涂层的分析显示该菌株在色报表面形成较多草酸盐,并且明显促进铅丹向铅白[Ph3（OH）2（CO3）2]的转化．     

利用黏弹性阻尼器减小结构的风振和地震反应

通过黏弹性阻尼器在工程结构抗震中所起的作用,阐述了黏弹性阻尼器增强结构抗震、抗风、抗振动和安全性的能力,介绍了黏弹性阻尼器性能及在国内外的使用和发展情况.     

Analysis of air pollution at Shuaiba industrial area in Kuwait

A study has been conducted over a period of one year on measurements of air pollution in the Shuaiba Industrial Area (SIA) of Kuwait. The study included analysis of pollutant behaviour relative to the wind speed and direction. SIA comprises several large scale industries including three petroleum refineries, two power plants, two fertilizer plants, a cement plant, a chlorine and soda plant, a commercial harbour and two large oil loading terminals. Measurements of 15 parameters have been carried out every 5 minutes using a mobile laboratory fitted with an automatic calibrator and a data storage system. The pollutants studied include methane, non‐methane hydrocarbons (NMHC), carbon monoxide, carbon dioxide, nitrogen oxides (NO, NO₂, and NO _x ), sulphur dioxide, ozone and suspended dust. Meteorological parameters monitored simultaneously include wind speed and direction, air temperature, relative humidity, solar radiation, and barometric pressure. The air quality data collected using the mobile laboratory have been used to calculate the diurnal and monthly variations in the major primary and secondary pollutants. Distribution levels of these pollutants relative to wind direction and speed have also been used in the analysis. The results show large diurnal variations in some pollutant concentrations. Generally, two types of concentration variations have been found, depending on whether the species is a primary or a secondary pollutant. Diurnal variations with two maxima were observed in the concentrations of primary pollutants including NO, SO₂, NMHC, CO and suspended dust, whereas a single maximum was observed for secondary pollutants such as O₃and NO₂. The monthly variations of SO₂and NO _x showed maximum values during the warm months. However, ozone showed a quite marked seasonal variation with maxima during spring and late summer and a minimum during the early summer. The results also indicated a common source for NO _x , SO₂, NMHC, CO and suspended dust to the North‐West (NW) of the monitoring station. Moreover for NO _x and SO₂, another less significant source is to the South‐South‐West (SSW) and South‐West (SW) of the monitoring station.     

制胶废水处理技术研究

对制胶废水处理技术进行了试验研究。结果表明,采用气浮预处理,使废水的可生化性大大提高,然后通过生物接触氧化和活性炭吸附处理,出水ＣＯＤ为９２ｍｇ／Ｌ,挥发酚０．０５０ｍｇ／Ｌ,甲醛未检出,水质清澈透明、无色无臭。为制胶废水的治理提供了切实可行的新途径。