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The Morphology Control Research of Paraffin/Melamine Resin Phase Transition Microcapsules
Qian Liuying, Li Dongxue, Li Fengyan, Wang Peng, Zhao Tianbo
Abstract
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661
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Microcapsules consisting of 58# paraffin wax used as the cores and melamineformaldehyde resin used as the shell were synthesized by the insitu polymerization, and the improvement of apparent morphology and core content of microcapsules was researched. The effects of pH adjustment method, the type of curing agent and stratified treatment on morphology and thermal storage property of microcapsule were studied by SEM, PSDA and DSC. It indicates that pH adjustment is an important factor to microcapsules' morphology and the overall property of microcapsules is greatly improved when NaCl is used as curing agent. After stratified processing, particle sizes of the microcapsules show unimodal distribution and core material content is up to 86.1%.
2016, 29 (3): 7-11.
DOI:
10.3969/j.issn.1006-396X.2016.03.002
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Influence of POE on the Aging Properties of SBS Modified Asphalt
Wang Lizhi, Li Xiaodong, Wang Chengxian, Wang Peng, Zhao Jingyuan, Wei Jianming
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840
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381
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For exploring the influence of POE(Poly Olefin Elastomer)on the aging properties of SBS modified asphalt, the index of rheological analysis, fluorescence microscope analysis, as well as the infrared spectroscopy measurement of the SBS modified asphalt, POE/SBS modified asphalt, and its residue after shortterm and longterm aging performance testing were investigate. The results indicated that POE can be compatibilized with the SBS modified asphalt due to its good molecular mobility. In this way, the SBS can be dispersed more homogeneously and be swollen more effectively, through which the aging process is reduced in this compatibility system.
2016, 29 (3): 1-6.
DOI:
10.3969/j.issn.1006-396X.2016.03.001
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Analysis of Temperature Field for Super Heavy Oil Pipeline
WANG Yufu, YANG Zhaoyan, WANG Peng,et al
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410
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321
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The heat transfer was analyzed for undergrand super heat oil pieline, and the pipeline and soil temperature field model was eatablished, a numerical simulation was proceeded. Then through compared the field experiment data collection with the results of numerical simulation, the results show that the current insulation measures can meet the engineering requirements.
2013, 26 (1): 72-75.
DOI:
10.3969/j.issn.1006396X.2013.01.017