Influence of CTBN content on fracture toughness of PF particleboard

2nd International Workshop on Materials Science and Mechanical Engineering

机械制造;材料科学

Zhang, H.Y.^1 ; He, Yang^1 ; Qu, Q.^1

College of Materials Science and Technolgoy, Nanjing Forestry University, Nanjing, China^1

关键词: Critical energy release rate;    Critical stress intensity factor;    Fracture performance;    Liquid rubbers;    Single edge notch bending;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/504/1/012044/pdf
DOI  :  10.1088/1757-899X/504/1/012044

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The study investigated whether the single-edge-notch bending method could be used in quantitative determinating the fracture toughness of the particleboard. Also, carbo xyl-terminated poly (butadiene-co-acrylonitrile) liquid rubber was chosen to improve the fracture toughness of the particleboard. Critical energy release rate GIC and critical stress intensity factor KIC were measured in different directions with sandwich structure and common specimens. The study shows that it is a feasible method to compare the fracture performance of different particleboard by the single-edge-notch bending. The liquid rubber can toughen the particleboard when the addition amount is less than 12% when PF resin was used. More addition can lead to dispersion problem which will decrease the ductibility of particleboard.