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首页> 外文期刊>Journal of Applied Polymer Science >The reduction of adhesive application in plywood manufacturing by using nanocellulose-reinforced urea-formaldehyde resin
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The reduction of adhesive application in plywood manufacturing by using nanocellulose-reinforced urea-formaldehyde resin

机译：采用纳米纤维素增强尿素 - 甲醛树脂减少胶合板制造中的粘合剂应用

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摘要

The aim of the study was to investigate the effect of nanocellulose (cellulose nanocrystals [NCC]) addition to urea-formaldehyde (UF) resin on the properties of plywood and the possibility of reducing resin spread rate in plywood production. The studies have shown the increase in viscosity of experimental adhesive mixture in comparison with reference one. On the basis of the bonding quality results, it was concluded that the NCC-reinforcement led to significant improvement in bonding quality of plywood. Moreover, values of bending strength (modulus of rupture) and modulus of elasticity also increased because of the cellulosic nanoparticles introduction. The positive effect of NCC addition on the properties of plywood allowed the reduction of resin spread rate by 50 g/m(2)and maintaining equally good strength as reference panels. The modification with nanocellulose itself did not lead to a decrease of free formaldehyde content. However, allowing the reduction of adhesive application led to a slight decrease in the amount of emitted formaldehyde.
机译：本研究的目的是研究在脲醛树脂（UF）中添加纳米纤维素（纤维素纳米晶体[NCC]）对胶合板性能的影响，以及在胶合板生产中降低树脂摊铺率的可能性。研究表明，与参考粘合剂相比，实验粘合剂混合物的粘度增加。根据粘接质量结果，可以得出结论，NCC加固显著改善了胶合板的粘接质量。此外，由于引入了纤维素纳米颗粒，弯曲强度（断裂模量）和弹性模量的值也增加了。NCC添加对胶合板性能的积极影响使树脂摊铺率降低50 g/m（2），并保持与参考面板相同的强度。纳米纤维素本身的改性并没有导致游离甲醛含量的降低。然而，允许减少粘合剂的使用会导致释放的甲醛量略有减少。

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