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中文摘要：
聚乙烯醇（PVA）通过KMnO4氧化为氧化聚乙烯醇（O-PVA），然后与亚磷酸二乙酯发生加成反应生成含磷聚乙烯醇（P—PVA），通过红外光谱和核磁共振确定了其结构。将P—PVA作为双组分水性聚氨酯主剂，多亚甲基多苯基异氰酸酯（PAPI）作为固化剂，考察了所制备的胶黏剂在木材刨花板中的阻燃性能。当施胶量为18％时，刨花板的极限氧指数（LOI）为27．9。热重分析表明，添加了以P—PVA为主剂的聚氨酯胶（P—Pu）后，与普通聚氨酯胶（Pu）相比，木材刨花板初始分解温度提前，延长了低温脱水炭化阶段，同时提高了在高温下的残炭量：
英文摘要：
Phosphited polyvinyl alcohol （P-PVA） was synthesized from diethyl phosphite and oxidated polyvinyl alcohol （O-PVA） which was obtained by oxidation of polyvinyl alcohol with KMnO4. The structure of P-PVA was confirmed by FT-IR and JH NMR. Using P-PVA as the main component and polyaryl polymethylene isocyanate （PAPI） as curing agent, the flameretarding properties of the prepared particle board were investigated to have a limiting oxygen index （ LOI ） of 27.9, when the loading of P-PU was 18 %. Result of TGA showed that compared with normal polyurethane （PU） adhesive, P-PU adhesive can decrease the initial decomposition temperature which prolongs the stage of low-temperature dehydration-carbonization and increases the yield of residue char of wood particleboard at high temperature.
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