本文对苯酚液化落叶松树皮粉改性酚醛树脂（BPF）在秸秆表面的润湿性进行了研究,并与加入聚合异氰酸酯的BPF-PMDI以及传统的酚醛树脂（PF）进行对比分析。利用新润湿模型的K值常量量化了树脂在稻秸秆表面的渗透速率。通过动态DSC以及Kissinger等式对BPF的固化反应动力学进行研究。结果表明：秸秆表面无论是否处理,BPF的渗透速率常数K最大,其次为BPF-PMDI,最小为PF。BPF的固化反应活化能与文献报道的木材/苯酚/甲醛树脂的活化能接近,但比传统的酚醛树脂的活化能高,转化率为40%时固化反应程度达到最大。
Liquefied bark modified phenol formaldehyde resin（BPF） was synthesized from liquefied larch bark and formaldehyde.The wettability of BPF resin was evaluated on the surface of rice straw,and compared with that of BPF resin mixed with PMDI and conventional phenol formaldehyde（PF） resin.Penetration performances of resins were characterized by a new wetting model using a constant parameter K value.Meanwhile curing kinetic mechanism of BPF resin was investigated with dynamic differential scanning calorimetry（DSC） and Kissinger equation.The results show that K value of BPF resin is the highest,followed by BPF-PMDI resin and PF resin on rice straw surfaces.The activation energy of BPF resin is close to that of reported wood/phenol/formaldehyde resin but is higher than that of PF resin.
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