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摘要:
The influencing factors in the course of synthesis of furan resin modified by urea-formaldehyde resin, such as reaction temperatures, molar ratio of formaldehyde and urea, pH values, charging ways and the addition of modifying agents, have been studied. Meanwhile, a more proper processing condition of synthesis of furan resin with high water content has been found. The furan resin product is a brown transparent liquid, which has the performance: tensile strength 2.28 MPa, mass fraction of water 18.9%, mass fraction of free formaldehyde 0.23%, viscosity (20C) 31 mPas.
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来源 :
Journal of Beijing University of Technology
ISSN: 0254-0037
年份: 2009
期: 6
卷: 35
页码: 800-804