http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Porous Copper With Capillary Performance and Gas Permeability Prepared by Two-Step Foaming Method
Jinming Ru,Bo Kong,Tongxiang Fan,Di Zhang 한국정밀공학회 2015 International Journal of Precision Engineering and Vol. No.
Porous copper have been prepared by two-step foaming method using 18%-72 wt% of C18H36O2 for the first-step foaming and 1.5 wt% of C7H10N2O2S for the second-step foaming. The effects of C18H36O2 contents and sintering time on pore structure, capillary performance and gas permeability were studied. The results show that porosity, pumping rate and gas permeability increase with the increase of C18H36O2 contents but decrease with the increase of sintering time. Porous copper with high pumping rate and gas permeability has potential as the support for mass and heat transfer in heat pipe.
Jincheng Mao,Heng Zhang,Wenlong Zhang,Jinming Fan,Chong Zhang,Jinzhou Zhao 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.60 No.-
Herein, a new heterogemini surfactant (YS-18), which has a novel structure with two different hydrophobic chains, was designed and easily synthesized with excellent yields. When YS-18 was employed as a thickening agent for the clean fracturing fluid, the results of laboratory evaluation obviously showed that it has much better tolerance of salt and thermostability than the corresponding symmetrical surfactants (YS-YS and 18-18). This not only could prove the dissymmetric beauty, but also provides an alternative way to prepare high-functional materials. The fluid system with a formula of 5 wt% of YS-18 and 0.6 wt% of KCl could maintain high fluid viscosity (more than 100 mPa s) for 60 min under a share rate of 170 s−1 at 110 °C. Meanwhile, the fluid could also provide good support to achieve proppant suspension. The SEM study and rheology test revealed that the fluid system has good network structure, and exhibits good elastic fluid properties. Furthermore, the YS-18/KCl fluid system could be easily and thoroughly broken by reservoir brines and hydrocarbon.