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烯丙基醚改性不饱和聚酯树脂合成工艺及性能研究 总被引:1,自引:0,他引:1
介绍封端法合成烯丙基醚改性不饱和聚酯的合成工艺及性能,探讨了合成反应的条件及原材料对树脂性能的影响,并阐述其在木器底漆中的应用。 相似文献
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二甲苯不饱和聚酯树脂的研制 总被引:1,自引:0,他引:1
先利用二甲苯与甲醛在酸性条件下合成二甲苯甲醋树脂,并利用顺丁烯二酸对其进行改性实验制得了二甲苯不饱和聚酯树脂。为测试二甲苯不饱和不聚酯树脂的应用性能佬了固化实验,从而确定了合成二甲苯不饱和聚酯树脂地最佳条件。 相似文献
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双环戊二烯改性不饱和聚酯树脂的合成研究 总被引:6,自引:0,他引:6
叙述了用双环戊二烯(DCPD)合成不饱和聚酯树脂的新技术,讨论了工艺条件的控制,影响因素及产品性能。工业试验表明,该工艺路线简单,合成的不饱和聚酯树脂与通用型树脂相比,耐热性能好,固含量高,收缩率低,其他性能不低于通用型不饱和聚酯树脂,具有一定的经济效益。 相似文献
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合成了一种烯丙基醚改性不饱和聚酯树脂,探讨了合成反应的条件及原材料对树脂性能的影响,并阐述其在光固化木器底漆中的应用。 相似文献
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综述了不同类型的生物质基不饱和聚酯树脂的研究进展,包括生物质二元酸、生物质二元醇、含生物质交联剂的不饱和聚酯树脂等。对上述生物质不饱和聚酯树脂的制备方法和合成条件等进行了概述,分析了生物质不饱和聚酯树脂的性能,并与石油基的不饱和聚酯树脂进行了比较。 相似文献
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聚氨酯改性不饱和聚酯树脂的制备 总被引:1,自引:0,他引:1
利用二步法由二元醇、二元酸及TDI合成一种聚氨酯改性不饱和聚酯树脂,第一步由二元醇和二元酸合成以羟基封端的不饱和聚酯,第二步利用不饱和聚酯的—OH与TDI的—NCO反应合成聚氨酯改性不饱和聚酯,使得树脂分子链段上既有不饱和链节又含有聚氨酯基团,结合了聚氨酯涂料和不饱和聚酯涂料的优点,使其涂膜性能优异。试验发现TDI加入量为10%时效果最佳。 相似文献
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本文研究了TDE-85环氧树脂丙烯酸酯的合成方法,讨论了合成条件(催化剂的种类与用量,反应温度及时间,投料比,反应类型及不饱和酸种类的选择等)对合成反应及合成产物性状的影响。另外,还考察了该合成产物的UV固化特性。 相似文献
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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
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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.
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Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 2, pp. 61–75, March–April, 2008. 相似文献
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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
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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
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塔设备改造选型的分析 总被引:2,自引:0,他引:2
就当前扩产增容中塔设备设计和改造时板式塔和填料塔的选型问题加以分析。在评述目前国内常用的几种塔板和新型填料之后,着重介绍一种新型塔板(导向梯形浮阀塔板)和一种新型填料(波环填料——乾隆帕克)。 相似文献