Sorption Behaviours of Exfoliated Graphite

Exfoliated graphite(EG) is selected as a new kind of sorbent to sorb heavy oil spilled.In order to make use of EG more effectively,some basic experiments are performed to investigate its sorption properties i.e.,specific sorption,height of saturation layer,sorption time constant.In the present experiments,A-grade heavy oil is employed as a standard sorbate.It is concluded that 1) under the condition that the area of solid(filter bottom)-liquid (heavy oil) interface is a constant,specific sorption usually decreases when the amonut of EG filled or the apparent bulk density increase,however,the specific sorption initially increases when the apparent bulk density is too low and the amount of EG filled is too much ;2) under the condition that the apparent bulk density of EG filled is a constant,the sorption time constant tends to increase when the amount of EG filled increases;however,for a constant amount of EG filled,the sorption time constant will decrease when the apparent bulk density increases.     

水泥在沥青混合料中的作用

水泥是碱性材料，因此它们对沥青的吸附作用比较强，一种沥青混合料分别按5％矿粉、5％水泥和2％消石灰 3％矿粉3种情况的析漏率，采用等量的水泥代替矿粉后，析漏率有所降低，掺入少量消石灰后，混合料的析漏率明显减少。由此可知，消石灰对沥青的吸附作用很强，有利于提高混合料的水稳定性，这点将在下面予以讨论。     

现代汽车自动空调系统工作原理及正确使用与维护(九)

<正>湿度传感器:热敏电阻式湿度传感器(如图16所示)可用于汽车风挡玻璃的防霜和电控自动空调系统的车内相对湿度的检测。热敏电阻式湿度传感器装有金属氧化物系列陶瓷材料制成的多孔烧结体,利用烧结体表面对水分子的吸附作用来工作。当烧     

汽车遮阳膜你知多少？

贴膜有助于行车安全 从专业角度看,贴膜最重要的特点是隔热。同时还可增加行车安全系数,因为太阳光投射和夜间行车时大灯的照射都非常刺眼,贴膜可以过滤强光,增强行车的安全性。尤其重要的是,当车在变速行驶时,前方车轮掀起的小石子打在车辆玻璃上,这时没有贴膜的玻璃较易破碎．而贴膜会增加玻璃的吸附作用,车内人员不至于被破碎玻璃划伤。     

用水泥、消石灰替代矿粉提高沥青混合料抗剥落性能的试验研究

目前水损害是我国高速公路沥青路面早期损害中最常见的破坏现象之一。本文通过对用水泥、消石灰替代部分矿粉的混合料的性能及施工工艺进行室内试验研究来论证添加水泥、消石灰对改善沥青混合料抗剥落性能的有效性，并最终达到延长沥青路面使用寿命的目的。