摘要
研究了两种抗冲改性剂增韧聚乳酸(PLA)体系的力学性能。结果表明:两种抗冲改性剂均能提高PLA的冲击强度和断裂伸长率。抗冲改性剂2在用量为5%时,使PLA体系的冲击强度提高到11.8 kJ/m2,比添加前提高了140.8%;当两种抗冲改性剂的用量为10%时,PLA体系的冲击强度均从4.9 kJ/m2提高到约16.0 kJ/m2,提高了226.5%。两种抗冲改性剂用量为5%时,PLA体系的断裂伸长率从9%分别提高到33%和20%;抗冲改性剂1用量为10%时,体系的断裂伸长率提高到173%。
The mechanical properties of polylactic acid（PLA） toughened by two kinds of impact modifiers were investigated. The results show that： the two kinds of impact modifier can improve the notched impact strength and elongation at break of PLA. When the content of impact modifier 2 is 5%, the notched impact strength improves to 11.8 kJ/m2, increasing by 140.8%. When the content of two kinds of impact modifiers is 10%, the notched impact strength both improves from 4.9 kJ/m2 to about 16.0 kJ/m2, increasing by 226.5%. When the content of two kinds of impact modifier is 5%, the elongation at break improves from 9% to 33% and 20% respectively. When the content of impact modifier 1 is 10%, elongation at break improves to 173%.
出处
《塑料科技》
CAS
北大核心
2014年第8期88-90,共3页
Plastics Science and Technology
关键词
聚乳酸
增韧
抗冲改性剂
Polylactic acid
Toughening
Impact modifier
