TY - JOUR
T1 - 多面体硅倍半氧烷锂盐在环氧树脂中的纳米分散与力学增强效应
AU - Ye, Xinming
AU - Yang, Rongjie
AU - Zhang, Wenchao
AU - Li, Jiarong
N1 - Publisher Copyright:
© 2021, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
PY - 2021/1
Y1 - 2021/1
N2 - Incompletely condensed hepta-phenyl silsesquioxane trisilanol (T7-Ph-POSS) and hepta-phenyl silsesquioxane lithium salt (Li-Ph-POSS) were selected as functional additive. Two epoxy resin (EP) composites were prepared by adding 1% of polyhedral oligomeric silsesquioxane (POSS). The thermal stability, optical properties, mechanical properties and flame retardant properties were investigated. The results show that three-dimensional submicron spherical particles of T7-Ph-POSS are dispersed in the EP matrix, the dispersion particle size is 0.1~1 μm. While Li-Ph-POSS displays the dispersion of zero-dimensional spherical nanoparticles, and the dispersion particle size is about 40 nm. The thermal stability of the EP composites is improved. EP/Li-Ph-POSS has the property of absorbing blue-violet light and endows with the excellent transparency, and the transmittance in the purple light region is close to 0. Compared with pure EP, the tensile strength, flexural strength and impact strength of EP/Li-Ph-POSS are increased by 40.2%, 40.8%, and 3.8%, respectively, and the peaks of heat release rate and smoke release rate are significantly reduced. Therefore, the mechanical properties and flame retardancy of EP/Li-Ph-POSS are obviously enhanced.
AB - Incompletely condensed hepta-phenyl silsesquioxane trisilanol (T7-Ph-POSS) and hepta-phenyl silsesquioxane lithium salt (Li-Ph-POSS) were selected as functional additive. Two epoxy resin (EP) composites were prepared by adding 1% of polyhedral oligomeric silsesquioxane (POSS). The thermal stability, optical properties, mechanical properties and flame retardant properties were investigated. The results show that three-dimensional submicron spherical particles of T7-Ph-POSS are dispersed in the EP matrix, the dispersion particle size is 0.1~1 μm. While Li-Ph-POSS displays the dispersion of zero-dimensional spherical nanoparticles, and the dispersion particle size is about 40 nm. The thermal stability of the EP composites is improved. EP/Li-Ph-POSS has the property of absorbing blue-violet light and endows with the excellent transparency, and the transmittance in the purple light region is close to 0. Compared with pure EP, the tensile strength, flexural strength and impact strength of EP/Li-Ph-POSS are increased by 40.2%, 40.8%, and 3.8%, respectively, and the peaks of heat release rate and smoke release rate are significantly reduced. Therefore, the mechanical properties and flame retardancy of EP/Li-Ph-POSS are obviously enhanced.
KW - Epoxy resin
KW - Flame retardant properties
KW - Mechanical properties
KW - Optical properties
KW - Polyhedral oligomeric silsesquioxane
UR - http://www.scopus.com/inward/record.url?scp=85100463112&partnerID=8YFLogxK
U2 - 10.16865/j.cnki.1000-7555.2021.0037
DO - 10.16865/j.cnki.1000-7555.2021.0037
M3 - 文章
AN - SCOPUS:85100463112
SN - 1000-7555
VL - 37
SP - 73
EP - 80
JO - Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering
JF - Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering
IS - 1
ER -