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以乙二醛和尿素为原料,制得高固含量的环保性型乙二醛/尿素树脂(GU)。对聚合物的结构和黏度进行表征,并探讨乙二醛与尿素的摩尔比、施胶液的配比、施胶浓度和施胶量对瓦楞原纸强度性能和抗水性能的影响。实验表明,当氧化淀粉与GU树脂的配比为90:10,施胶浓度为6%,施胶量为5%时,瓦楞原纸的环压指数、吸湿后环压强度保留率和裂断长分别提高了215.23%、65.89%和112.15%。瓦楞原纸的质量由D级提高到A级。
Using glyoxal and urea as raw materials, a high solid content glyoxal / urea resin (GU) was obtained. The structure and viscosity of the polymer were characterized. The effects of the molar ratio of glyoxal to urea, the ratio of sizing liquid, sizing concentration and sizing on the strength and water resistance of corrugated paper were discussed. Experiments show that when the ratio of oxidized starch and GU resin is 90:10, the sizing concentration is 6% and the sizing amount is 5%, the ring crush index, retention rate of crush strength after crushing and breaking length Increased by 215.23%, 65.89% and 112.15% respectively. The quality of corrugated paper from D-level to A-level.