Study on fast curing PF resin added by compound curing agent

doi:10.3969/j.issn.1000-2006.2015.01.020

CHEN Yuzhu, CHU Fuxiang, FAN Dongbin, QIN Tefu

Journal of Nanjing Forestry University (Natural Sciences Edition） ›› 2015, Vol. 39 ›› Issue (01) : 109-113.

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Journal of Nanjing Forestry University (Natural Sciences Edition） ›› 2015, Vol. 39 ›› Issue (01) : 109-113. DOI: 10.3969/j.issn.1000-2006.2015.01.020

Study on fast curing PF resin added by compound curing agent

CHEN Yuzhu, CHU Fuxiang^*, FAN Dongbin, QIN Tefu

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Abstract

In order to meet fast curing requirements of PF resin without pot life and wet shear strength,compound curing agents were obtained by combination of single curing agent, including methylolureas(MMU), propylene carbonate(PC), sodium carbonate(Na₂CO₃), magnesium hydrate(Mg(OH)₂).By comparing the properties of PF resins added with single with the compound curing agents, it indicated that: Although single curing agent improved the on wet shear strength of plywood, but pot lifes was too short to meet the production requirement of at least 4 hours. The compound curing agent of MMU+Na₂CO₃ showed obvious effect on fast curing PF resin by shortening the hot pressing time from 330 s to 270 s, and the plywood wet shear strength reached the class Ⅰ of Chinese industry standard(≥0.7 MPa). The compound curing agent of MMU+Na₂CO₃ was a suitable fast curing agent which could be used in plywood production.

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CHEN Yuzhu, CHU Fuxiang, FAN Dongbin, QIN Tefu. Study on fast curing PF resin added by compound curing agent[J]. Journal of Nanjing Forestry University (Natural Sciences Edition）. 2015, 39(01): 109-113 https://doi.org/10.3969/j.issn.1000-2006.2015.01.020

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