Volume 33 Issue 2
Mar.  2016
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XI Xuedong, LEI Hong, DU Guanben, WU Zhigang, CAO Ming, LIAO Jingjing. Cold-setting MUF resin adhesive prepared with concentrated fomaldehyde[J]. Journal of Zhejiang A&F University, 2016, 33(2): 300-305. doi: 10.11833/j.issn.2095-0756.2016.02.016
Citation: XI Xuedong, LEI Hong, DU Guanben, WU Zhigang, CAO Ming, LIAO Jingjing. Cold-setting MUF resin adhesive prepared with concentrated fomaldehyde[J]. Journal of Zhejiang A&F University, 2016, 33(2): 300-305. doi: 10.11833/j.issn.2095-0756.2016.02.016

Cold-setting MUF resin adhesive prepared with concentrated fomaldehyde

doi: 10.11833/j.issn.2095-0756.2016.02.016
Funds:

国家林业局引进国际先进农业科学技术计划(948计划)项目(2013-4-13);国家林业公益性行业科研专项(201304505);云南省中青年学术带头人后备人才(2011HB024)

  • Received Date: 2015-03-22
  • Rev Recd Date: 2015-05-11
  • Publish Date: 2016-04-20
通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Cold-setting MUF resin adhesive prepared with concentrated fomaldehyde

doi: 10.11833/j.issn.2095-0756.2016.02.016
Funds:

国家林业局引进国际先进农业科学技术计划(948计划)项目(2013-4-13);国家林业公益性行业科研专项(201304505);云南省中青年学术带头人后备人才(2011HB024)

Abstract: To research the influence of high formaldehyde concentrations on synthetic copolycondensation of melamine urea-formaldehyde (MUF) resin performance, resins from a high formaldehyde concentration (MUF-H) of 50% and standard concentration (MUF) of 37% were compared. Then glulam was prepared at room temperature (20 ℃) to test its physical and mechanical properties. Also, structural characteristics and thermal mechanical properties of resins were studied using 13C-NMR (nuclear magnetic resonance), Fourier transform infrared (FT-IR) spectroscopy, and Dynamic Mechanical Analysis (DMA). Results showed that the high formaldehyde concentrations enhanced solid content and viscosity of the MUF-H adhesive, shortened curing time, and improved shear strength for 60%. The DMA test results revealed that the MUF-H resin also greatly enhanced the adhesive elastic modulus. Additionally, the 13C-NMR analysis indicated that the methylene and ether bonds of MUF-H resin ware higher than MUF. Thus, the MUF-H system had a higher reaction rate and crosslinking degree which improved the mechanical properties of the resin.[Ch, 5 fig. 5 tab. 15 ref.]

XI Xuedong, LEI Hong, DU Guanben, WU Zhigang, CAO Ming, LIAO Jingjing. Cold-setting MUF resin adhesive prepared with concentrated fomaldehyde[J]. Journal of Zhejiang A&F University, 2016, 33(2): 300-305. doi: 10.11833/j.issn.2095-0756.2016.02.016
Citation: XI Xuedong, LEI Hong, DU Guanben, WU Zhigang, CAO Ming, LIAO Jingjing. Cold-setting MUF resin adhesive prepared with concentrated fomaldehyde[J]. Journal of Zhejiang A&F University, 2016, 33(2): 300-305. doi: 10.11833/j.issn.2095-0756.2016.02.016

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