共查询到20条相似文献,搜索用时 203 毫秒
1.
2.
改进供料道结构提高匀化系数 总被引:4,自引:4,他引:0
1概况供料道是瓶罐玻璃生产线上的关键设备。它是熔化好的玻璃液从工作池通往成型机的通道。玻璃液在流经供料道的过程中,进一步得到匀化,使其温度均匀、稳定,以保证产品成型时料型和料重的一致。生产实践证明,欲得到高质量的玻璃制品,料温适宜而均匀、料滴图1改造... 相似文献
3.
泥浆是卫生陶瓷生产的基础,性能好的泥浆,直接关系到半成品及成品的质量,提高卫生陶瓷的质量和档次,研制合理的泥料配方,控制好泥浆性能是工作的重点。 相似文献
4.
5.
CK立磨超细粉磨矿渣,运行稳定,电耗低,磨辊磨盘耐磨衬层寿命长修复方便,产品颗粒级配好。影响操作运行的主要因素有进出口差压、通风量、料层密实度、磨机振动、喷风环和挡料圈等。 相似文献
6.
7.
8.
9.
10.
11.
教学相长既是教学理念,又是教学方法,它是古人对教学和认知的一种哲学思想。通过目前对教学相长认识现状的分析,结合课程教学,构建了课程教学中的教学相长模型。该模型包含5种形式的教学相长模式,囊括了目前人们对教学相长的所有认识。通过具体的教学实践,阐述了5种教学相长模式的具体应用,证明了这5种模式在课程教学中的有效性,为教学相长在新时期的应用提供了实践和理论依据。 相似文献
12.
宋代景德镇青白瓷具有"白如玉、明如镜、薄如纸、声如磬"的特点,而宋代的政治方针、哲学思想、宗教思想、文人审美和书画意趣等多方面的综合影响,正是形成宋代景德镇青白瓷审美风格的深层次原因。 相似文献
13.
14.
15.
以钛网为阳极,镍网为阴极,饱和的NaCl溶液为阳极电解质,应用离子交换膜通过阳极氧化甲苯的方法合成氯甲苯。讨论了阳极电解质质量分数、电流密度、电解液温度、反应时间等反应条件的选择。结果表明:在反应温度25 ℃,阳极、阴极电解液分别为25%NaCl和10%NaOH溶液,电流密度为10~15 A/dm2条件下电解,并在4.5 h左右结束反应,氯甲苯的产率最高,可达55.5%,电流效率为51.5%。 相似文献
16.
17.
简要介绍了聚醚改性硅氧烷磷酸酯的结构,综述了它的合成及应用,阐述了制备聚醚改性硅氧烷磷酸酯的硅氢化反应和磷酸化反应,这两步反应决定了它兼具非离子和阴离子表面活性剂的双重性质;从物质结构角度讨论了聚醚改性硅氧烷磷酸酯具有优异的抗静电、润湿渗透、乳化分散、低泡等性能,从而能在日用化学品等诸多领域应用的原因。最后指出了这种表面活性剂的研究现状和发展前景。 相似文献
18.
《应用陶瓷进展》2013,112(4):204-209
Porous mullite ceramics were prepared at 1300–1600°C for 2?h via a foam-gelcasting route using industrial-grade mullite powders as the main raw material, Isobam 104 as the dispersing and gelling agent, triethanolamine lauryl sulphate as the foaming agent and sodium carboxymethyl cellulose as the foam stabilising agent. The effects of firing temperature on the sintering behaviour of green samples as well as microstructures and properties of final porous mullite products were investigated. With increasing the temperature from 1300 to 1600°C, linear shrinkage and bulk density values of fired samples increased, whereas their porosity decreased. Mechanical strength and thermal conductivity values of fired samples decreased with increasing their porosities. Even at a porosity level as high as 79.4%, compressive and flexural strengths of fired samples (with average pore size of 314?μm) remained as high as 9.0 and 3.7?MPa, respectively, and their thermal conductivity (at 200°C) remained as low as 0.21?W?(m?1?K?1). 相似文献
19.
20.
Medium chain length fatty acid esters and their medical and nutritional applications 总被引:4,自引:0,他引:4
Vigen K. Babayan 《Journal of the American Oil Chemists' Society》1981,58(1):49A-51A
Caprylic and capric acid esters and their applications in medical, nutritional and dietetic uses are described. Medium chain
triglycer-ides (MCT) as a tool in the control of obesity, control in the choles-terol deposition in the tissues as well as
a means of lowering serum cholesterol are cited as unique characteristics of such lipids. MCT as a source of quick energy
and high energy is suggested as an alterna-tive to the conventional fats and oils (LCT). Dietetic and nutritional application
utilizing the unique characteristics of caprylic and capric acid esters is indicated as alternatives to conventional fats
and oils. The mono-diglycerides of caprylic and capric acid as cholesterol dis-solving agents in treating of patients having
cholesterol gallstones is described to illustrate the unique solvency properties of such mono esters in medical applications.
The possibility of such mono esters of di- and polyhydric alcohols to act as co-solvents for oil and water systems is suggested
which can be applied in medical, pharmaceuti-cal and allied fields. Structured lipids with a predominance of capry-lic and
capric acid to modify the properties of triglycerides is described for hyperalimentation uses as well as the special nutri-tional
and dietetic needs. 相似文献