共查询到20条相似文献,搜索用时 187 毫秒
1.
合理的使用丁基密封胶是保证中空玻璃单元密封寿命的关键。本文通过对中空玻璃用热熔丁基密封胶的不同配方、工艺研究,采用JC/T 914—2003标准对其性能进行对比,通过引进的先进生产线,提高工艺水平。研究生产高性能的中空玻璃用热熔丁基密封胶。 相似文献
2.
介绍了中空玻璃丁基热熔密封胶的发展历程,以及被用作中空玻璃边部密封的原因和技术要求.指出国内中空玻璃用丁基热熔密封胶存在的问题及解决方案. 相似文献
3.
通过分析水蒸气渗透原理以及渗透的途径,发现密封胶水蒸气透过率参数与中空玻璃的失效关系密切,因此结合JC/T914-2003要求介绍了丁基热熔密封胶水蒸气透过率的测试方法,以期为相关企业中空玻璃密封胶的质量控制提供一定的指导。 相似文献
4.
《建筑玻璃与工业玻璃》2008,(1)
中国建筑玻璃与工业玻璃协会于2007年11月8日,在萧山组织国内外中空玻璃相关专家和企业代表,对杭州之江有机硅化工有限公司生产的中空玻璃用丁基热熔密封胶产品及自动化生产线进行评估。会议听取了杭州之江有机硅化工有限公司的丁基热熔密封胶产品研发情况和引进德国自动化生产线的情况汇报,并对该产品的生产线及检测条件进行了现场考察。 相似文献
5.
6.
7.
8.
《建筑玻璃与工业玻璃》2008,(1)
2007年11月8日杭州之江有机硅化工有限公司中空玻璃用丁基热熔密封胶产品及自动化生产线评估会议在美丽的西子湖畔举行,50多位国内外中空玻璃相关专家和企业代表汇聚一堂,有中国建筑玻璃与工业玻璃协会张佰恒秘书长、李会副秘书长、郝向国副主任;中空玻璃专业委员会主任、天津耀皮总经理张彦铮;秦皇岛国家玻璃质量监督检验中心刘志付主任、李勇副主任; 相似文献
9.
10.
11.
乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。 相似文献
12.
D. G. Gordeev L. F. Gudarenko M. V. Zhernokletov V. G. Kudel’kin M. A. Mochalov 《Combustion, Explosion, and Shock Waves》2008,44(2):177-189
A semi-empirical equation of state for metals is described. Its capabilities are demonstrated by the example of the equation
of state for aluminum. New experimental data are presented on the location of the isentrope of aluminum for unloading from
the state at p = 229.71 GPa on the shock adiabat to an aerogel (SiO2) of density 0.08 g/cm3.
__________
Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 2, pp. 61–75, March–April, 2008. 相似文献
13.
15.
16.
Jorge Marcelo Romero Soledad Bustillo Hugo Enrique Ramirez Maisuls Nelly Lidia Jorge Manuel Eduardo Gómez Vara Eduardo Alberto Castro Alicia H. Jubert 《International journal of molecular sciences》2007,8(7):688-694
A thermochemical rather simple experimental technique is applied to determine the enthalpy of formation of Diperoxide of ciclohexanone. The study is complemented with suitable theoretical calculations at the semiempirical and ab initio levels. A particular satisfactory agreement between both ways is found for the ab initio calculation at the 6–311G basis This set level. Some possible extensions of the present procedure are pointed out. 相似文献
17.
18.
19.
A perturbation viscometer is a differential capillary viscometer that measures the logarithmic viscosity gradient of the viscosity-composition curve for gas mixtures. Measurements are made at different gas mixture compositions. Integration of the logarithmic viscosity gradients measured over the full composition range gives the mixture viscosity relative to the viscosity of one of the pure components of the gas mixture. This method is attractive because, for measurements of equal precision, integration of the gradients is potentially an order of magnitude more precise than measurement of the viscosities directly. It can also work at high and low temperatures and perhaps high pressures.The perturbation viscometer has been used to make measurements on ideal gas mixtures at ambient and elevated temperatures. The situation is more complicated when the gas mixtures are non-ideal. Extra effects due to density differences, molar volume change on mixing and differential thermal expansion may be measured in addition to the desired viscosity change producing systematic errors in the results. Thus, a more sophisticated apparatus is required. The standard perturbation viscometer has been modified to separate out the extra effects to permit measurement of the true change in viscosity. In addition, the theoretical operation of the modified apparatus has been revised to account for the design changes to permit calculation of the viscosity-composition profiles from the results.The apparatus has been tested using helium-HFC-125 mixtures and two new viscosity-composition profiles are presented for these mixtures at 23 and . Internal consistency tests have been used to confirm that the data produced are of high quality with an estimated uncertainty in the viscosity ratio data at of 0.9% and at of 1.5%. 相似文献
20.
醋酸纤维素取代基分布与性质的关系 总被引:9,自引:0,他引:9
分析了以吡啶为溶剂的醋酸纤维素的13C-NMR核磁共振谱,得出了三种不同位置羟基的取代度。结合X—射线和DSC分析,初步说明具有相同取代度但未经水解和经过水解的醋酸纤维素(CA) 性质上的差异是由于三个羟基上的取代度分布不同及消晶程度差异所致。 相似文献