Effects of the reagent molar ratio on the phase separation and properties of waterborne polyurethane for application in a water-based ink binder

2017 ◽  
Vol 134 (42) ◽  
pp. 45406 ◽  
Author(s):  
Yang Zhihui ◽  
Wu Guangfeng ◽  
Zhang Huixuan
Keyword(s):  
Phase Separation ◽  
Waterborne Polyurethane ◽  
Molar Ratio ◽  
Water Based

Role of the interactions between carbonate groups on the phase separation and properties of waterborne polyurethane dispersions prepared with copolymers of polycarbonate diol

2015 ◽  
Vol 88 ◽  
pp. 199-211 ◽  
Author(s):  
José Antonio Jofre-Reche ◽  
Vanesa García-Pacios ◽  
Víctor Costa ◽  
Manuel Colera ◽  
José Miguel Martín-Martínez
Keyword(s):  
Phase Separation ◽  
Waterborne Polyurethane ◽  
Polycarbonate Diol ◽  
Polyurethane Dispersions

Preparation and properties of a novel low crystallinity cross-linked network waterborne polyurethane for water-based ink

2019 ◽  
Vol 133 ◽  
pp. 161-168 ◽  
Author(s):  
Jiantao Zhu ◽  
Zhimin Wu ◽  
Di Xiong ◽  
Langsheng Pan ◽  
Yuejin Liu
Keyword(s):  
Waterborne Polyurethane ◽  
Water Based ◽  
Low Crystallinity

Fabrication of Porous Clay Materials with Aligned Pore Structures by Freeze-Drying

2006 ◽  
Vol 510-511 ◽  
pp. 906-909 ◽  
Author(s):  
Hae Jin Hwang ◽  
Do Yeon Kim ◽  
Ji Woong Moon
Keyword(s):  
Phase Separation ◽  
Freeze Drying ◽  
Vertical Direction ◽  
Weight Fraction ◽  
Clay Particles ◽  
Casting Technique ◽  
Water Based ◽  
Clay Slurry ◽  
Size And Morphology ◽  
Clay Materials

Porous clay materials with columnar type pore channels were fabricated from water-based clay slurry and a specially designed mold by using a freeze casting technique. Ice was stimulated to grow vertical direction, and aligned macro pores were formed to the same direction. The phase separation between the ice and clay particles might be responsible for the formation of the columnar type pores. It appears that it is possible to control the size and morphology of pores by modifying a freezing mold, refrigerant temperature, and the weight fraction of clay in slurry.

Effects of macromolecular diol containing different carbamate content on the micro-phase separation of waterborne polyurethane

2018 ◽  
Vol 53 (11) ◽  
pp. 8639-8652 ◽  
Author(s):  
Can Tao ◽  
Zhen Luo ◽  
Junjie Bao ◽  
Qin Cheng ◽  
Yiping Huang ◽  
...  
Keyword(s):  
Phase Separation ◽  
Waterborne Polyurethane

Preparation of Ammonium Oleic Acid Salts and Their Evaluation as Shale Swelling Inhibitors in Water-Based Drilling Fluid

2021 ◽  
Vol 58 (4) ◽  
pp. 311-316
Author(s):  
Rongjun Zhang ◽  
Yun Bai ◽  
Yan Sun ◽  
Weichao Du ◽  
Chunsheng Pu ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Drilling Fluid ◽  
Inhibitory Effect ◽  
Superior Performance ◽  
Molar Ratio ◽  
Inhibition Mechanism ◽  
Subsequent Work ◽  
Expansion Test ◽  
Water Based ◽  
Acid Salts

Abstract In this paper, ammonium oleic acid salts (AOS) were prepared from oleic acid and amines and investigated as low molecular weight shale swelling inhibitors. First, the inhibitory effect of AOS was investigated using the linear expansion test of bentonite. The results show that the inhibitor prepared from oleic acid and tetraethylene pentamine with a molar ratio of 1:2 (AOS-8) has an excellent inhibitory effect on the hydration expansion of bentonite. The inhibitory effect of AOS-8 on bentonite was further investigated in subsequent work steps using various methods, including the linear swelling test of clay and particle distribution measurement. The results show that AOS-8 has superior performance in inhibiting hydration swelling and dispersion of bentonite. With 0.5% AOS-8, the swelling rate was reduced to 37.7%, and the particle size of bentonite in water could be controlled with AOS-8. Finally, the inhibition mechanism of AOS-8 was determined in detail by scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). In water-based drilling fluid, AOS-8 is compatible with conventional additives. It can also significantly improve the lubricating capacity of the mud cake after ageing at 120°C.

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