CAJ | 학술논문

在废弃棉秆皮纤维增强聚乳酸模压制成的复合材料板中添加阻燃剂后,由于其膨胀体系原理,严重影响了复合材料的力学性能.选用蒙脱土(MMT)和微纤化纤维素(MFC)作为协效剂,利用其特殊的物理结构来提高复合材料的力学性能.同时,蒙脱土也有协效阻燃作用,可以提高材料的阻燃性能.试验结果表明,在加入协效剂后,复合材料的力学性能均有提高,MFC对材料的拉伸强度和冲击强度提高较明显,可分别提高43.74%和41.50%.经XRD测定,加入MMT后,材料的片层间距增加到5.38 nm,说明MMT以片层的形式插入到纤维与基体中,同时极限氧指数增加了6.38%.
재폐기면간피섬유증강취유산모압제성적복합재료판중첨가조연제후,유우기팽창체계원리,엄중영향료복합재료적역학성능.선용몽탈토(MMT)화미섬화섬유소(MFC)작위협효제,이용기특수적물리결구래제고복합재료적역학성능.동시,몽탈토야유협효조연작용,가이제고재료적조연성능.시험결과표명,재가입협효제후,복합재료적역학성능균유제고,MFC대재료적랍신강도화충격강도제고교명현,가분별제고43.74%화41.50%.경XRD측정,가입MMT후,재료적편층간거증가도5.38 nm,설명MMT이편층적형식삽입도섬유여기체중,동시겁한양지수증가료6.38%.
The composite boards were moulded by waste cotton stalk bast fibers and polylactic acid (PLA), whose mechanical properties were seriously affected after addition of flame retardants. Montmorillonite (MMT) and micro fiber cellulose (MFC) with special physical structure were utilized as synergists to improve the mechanical properties of composite materials. At the same time, MMT had synergistic flame retardant ef-fect, which could improve the flame retardant properties of materials. The experimental results showed that the mechanical properties of composite materials were increased after synergist addition. The tensile strength and impact strength was obviously increased by MFC addition and increased by 43.74% and 41.50%, respec-tively. XRD result indicated that the interlamellar space of materials increased to 5.38 nm after MMT addition, and also illustrated MMT inserted into the fibers and matrixs in the form of layers, meanwhile limit oxygen in-dex was increased by 6.38%.