Fabrication and Characterization of Novel Liquid Rubber Modified Epoxies

被引：7
|
作者：
Gunwant, Dheeraj [1 ]
Sah, Prakash L. [1 ]
Zaidi, M. G. H. [2 ]
机构：
[1] GB Pant Univ Agr & Technol, Mech Engn Dept, Pantnagar 263145, Uttar Pradesh, India
[2] GB Pant Univ Agr & Technol, Chem Dept, Pantnagar 263145, Uttar Pradesh, India
来源：
MATERIALS TODAY-PROCEEDINGS | 2018年 / 5卷 / 11期
关键词：
Liquid rubber toughened epoxy; tensile test; fracture toughness; impact strength; thermogravimetric analysis; MECHANICAL-PROPERTIES; DGEBA EPOXY; FRACTURE; BLENDS; COMPOSITES; MORPHOLOGY; TOUGHNESS;
D O I：
10.1016/j.matpr.2018.10.273
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present investigation, a DGEBA based epoxy has been modified by a novel liquid rubber (LR) (0-25 wt. %) obtained from the pyrolysis of scrap rubber. Mechanical characterizations viz. tensile, impact and fracture toughness were conducted on the prepared LR modified epoxies (LREs). A reduction in the Young's modulus and tensile strength was observed with LR concentration. Highest increase in impact strength (similar to 73 %) and KIC (similar to 79 %) at 15 wt. % LR concentrations was observed in the LREs. FESEM revealed the formation of biphasic morphology and cavitation followed by shear yielding to be the prevalent toughening mechanism. Thermogravimetric analysis revealed that LR addition has negligible effect on the thermal stabilities of epoxy. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：24750 / 24759
页数：10
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