液相性质对泡沫流变特性的影响

采用同轴圆筒旋转粘度计,测定了泡沫流体的剪应力和剪切速率,并用回归分析方法求得流变特性参数。结果表明,泡沫流体本构方程可用Herschel-Bulckley模型表示。泡沫气含率和液相非牛顿特性对流变特性参数影响明显。     

规整聚苯乙烯接枝聚乙酸乙烯酯聚合物的醇解与分析

规整的聚苯乙烯大单体接枝于聚乙酸乙烯酯主链上形成的接枝聚合物,通过醇解,获得了两性聚合物,定量醇解分析和PGC分析表明:在两性聚合物中疏水成份为6.5％左右。     

表面活性剂在制作高效灭火剂方面的应用

表面活性剂已大量用作灭火剂的添加剂,从而大大改进与提高了灭火剂的灭火性能。本文对这些表面活性剂的种类、结构、性能及应用配方等作了评介。     

泡沫铝在钢球磨煤机隔声罩中的应用研究

分析了钢球磨煤机噪声产生的原因，提出将泡沫铝应用在磨煤机隔声罩中的观点，建立了泡沫铝-玻璃棉-钢板层合板的吸声系数数学模型，并对其数值计算。结果表明，用泡沫铝取代目前磨煤机隔声罩中的阻尼层和护面层可提高隔声罩的降噪性能，且提高其环保性能。     

含磷阻燃剂DEEP的合成

以石油醚作溶剂，氨法一步合成中间体亚磷酸三乙酯，再合成目标产物乙基磷酸二乙酯（以下简称DEEP），以DEEP作阻燃剂，在软质聚氨酯制品中进行氧指数测试，结果表明DEEP是软质聚氨酯制品的理想阻燃剂。     

真空辅助成形泡沫夹层复合材料粘接界面性能研究

夹层泡沫与复合材料整体VA RI成型过程中,在界面上易产生弱粘接以及粘接不稳定现象.该文采用三种不同方法改善夹层泡沫与复合材料界面粘接性能,在夹层泡沫表面涂覆本体树脂,采用本体树脂制备胶膜铺放在夹层泡沫盒复合材料之间,在夹层泡沫与复合材料之间增加一层空隙率更大的织物.结果表明,三种方法均能改善夹层结构的界面,铺放胶膜对界面改善效果最佳,涂敷树脂效果相对最差.     

Breeding behaviour of the Omei tree frog Rhacophorus omeimontis (Anura: Rachophoridae) in a subtropical montane region

Breeding behaviour of the Omei tree frog, Rhacophorus omeimontis, was studied during the egg-laying period (mid-April to late June) in south-west China. The operational sex ratio of the breeding population was male-biased at 3.0?±?0.8 (mean?±?SD) on a nightly basis in Pond A and 4.3?±?1.1 in Pond B. Pairs with a male clasping a female occurred in ponds first; the amplectant pairs moved to a neighbouring plant and then released foam in leaves 14–370 cm above the pond's water surface. Immediately, other males came to join the pair, forming an amplexing group of 2 to 7 males (for all 45 breeding units observed). Among the males no direct physical competition for possession of the females was observed. Females produced foam which surrounded the subsequently-laid eggs. The whole process of oviposition lasted 45–65 minutes. After ovipositing, males left the female, the female folded and lined neighbouring leaves with more foam produced to surround the eggs further. This process took 15–45 minutes. The numbers of eggs in a clutch ranged from 457 to 837 and eggs were between 2.9 and 3.4 mm in diameter; those two measures were negatively correlated with each other. Eggs hatched after 12–17 days; the larval period lasted 63–78 days. Fertilization success was positively related to the number of males participating in matings.     

钛白力化学法固相接枝聚苯乙烯改性研究

提出并详细研究了在搅拌磨中钛白力化学固相接枝聚苯乙烯改性的工艺及影响因素,得出了较好的工艺条件和工艺指标,证明此工艺有较好的应用前景;定性分析了其改性机理,认为主要是自由基聚合反应。     

义煤矿区极易自燃厚煤层快速治理技术

义煤集团公司下辖的五个矿所采煤层为容易自然发火煤层，自然发火期一个月，最短7天，煤炭自燃问题严重困扰着集团公司的安全生产。本文研究了高效复合泡沫灭火抑爆新技术，既能充分利用目前有效的常规防灭火技术与手段，又能克服目前注浆、惰气、惰气泡沫、阻化剂等灭火或抑爆技术的不足，并研制了产生高效复合泡沫的新装备，提出了灭火钻孔快速...     

废PS泡沫塑料的综合利用研究与开发

对废旧聚苯乙烯（ＰＳ）泡沫塑料进行了多途径的综合利用研究与开发。介绍了溶解—喷雾干燥法回收ＰＳ树脂的工艺过程及结果，用溶解—改性法以废ＰＳ泡沫塑料为原料开发研制的系列涂料、涂饰剂、胶粘剂等，并列举了系列产品的性能与用途。