环氧改性聚酰胺树脂/纳米氧化铝浸渍实木单板改善导热和抗冲击性能
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摘要
合成侧链含有氯丙醇基的环氧改性聚酰胺多胺树脂浸渍材料,并将其与纳米氧化铝分散液复配,通过真空加压浸渍的方法浸入木材单板中,再经高温干燥,可得到一种环氧改进聚酰胺树脂/纳米氧化铝改性单板,经过这种处理之后的单板导热系数、抗冲击强度均有明显提升,不同材种单板的抗冲击性能可提升7.87%～23.65%。经自制环氧氯丙烷改性聚酰胺多胺/纳米氧化铝浸渍液改性的杨木、黑胡桃、枫木、橡木单板,能够有效提高其单板的导热性能和抗冲击性能。
A kind of epoxy modified polyamide polyamine resin impregnating material with side chain containing chloropropanol group was synthesized. It was impregnated into hardwood veneer by vacuum pressure after being mixed with nano-alumina dispersion solution. An epoxy modified polyamide resin/nano-alumina modified hardwood veneer can be produced by means of drying at high temperature. The thermal conductivity and impact resistance of the impregnated hardwood veneer are obviously improved, of which the impact resistance of different wood veneers is increased by 7.87%～23.65%.Poplar,black walnut, maple and oak veneers impregnated by polyamide polyamine/nano-alumina impregnating solution modified by epichlorohydrin can effectively improve the thermal conductivity and impact resistance of veneers.
A kind of epoxy modified polyamide polyamine resin impregnating material with side chain containing chloropropanol group was synthesized. It was impregnated into hardwood veneer by vacuum pressure after being mixed with nano-alumina dispersion solution. An epoxy modified polyamide resin/nano-alumina modified hardwood veneer can be produced by means of drying at high temperature. The thermal conductivity and impact resistance of the impregnated hardwood veneer are obviously improved, of which the impact resistance of different wood veneers is increased by 7.87%～23.65%.Poplar,black walnut, maple and oak veneers impregnated by polyamide polyamine/nano-alumina impregnating solution modified by epichlorohydrin can effectively improve the thermal conductivity and impact resistance of veneers.
引文
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[2]徐康,吕建雄,刘君良,等.浸渍后处理及干燥处理对木材树脂浸渍改性效果的影响[J].林业科学,2018,54(4):84-92.
[3]沈一丁,刘艳,费贵强,等.高固含量改性PAE湿强剂的制备及性能研究[J].陕西科技大学学报(自然科学版),2016,34(1):95-101.
[4]李攀敏,钟朝位,童启铭,等.环氧树脂/氧化铝复合材料的制备及导热模型[J].电子元件与材料,2011,30(11):26-29.
[5]吴聪,都怡佩,沈意斌,等.氧化铝/环氧树脂复合材料的制备及散热性能研究[J].化工新型材料,2018,46(8):63-66.
[6]王雪花,费本华,柴宇博,等.粗皮桉木材热处理位置对吸热量及升温速度的影响[J].浙江农林大学学报,2014,31(5):745-750.
[7]徐伟,陶鑫,吴智慧,等.木质地板用地采暖方式[J].木材工业,2017,31(3):35-39.
[8]张烁培,徐伟,吴智慧,等.低温热辐射地板结构及连接结构设计[J].家具,2018,39(2):21-23.
[9]朱剑刚,吴智慧.家具企业实现绿色制造的技术体系:第5讲绿色工艺技术[J].家具,2013,34(5):67-71.