Effect of CO2 on the degradation of cement-bonded particleboard based on the treatment to conventional cured board

14th Pacific Rim Bio-Based Composites Symposium

材料科学;生物科学

Maail, R.S.^1

Department of Forest Products Technology, Faculty of Agriculture Pattimura University, Jl. Ir. M. Putuhena, Ambon, Indonesia^1

关键词: Affecting factors;    Cement-bonded particleboard;    CO2 concentration;    Curing process;    Linear modeling;    Supercritical CO2;    Supercritical phase;    Supercritical phasis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/593/1/012018/pdf
DOI  :  10.1088/1757-899X/593/1/012018

来源: IOP

【 摘 要 】

This study aimed to evaluate and clarify the effect of CO2 at either the gaseous or supercritical phase on the degradation of cement-bonded particleboard (CBP) based on the treatment to conventional cured board, while the estimation of long term degradation of CBP is also discussed. The properties of CBP are improved by CO2 treatment in short period in both the gaseous and supercritical phases even after the conventional curing process. These properties, however, over the longer treatment time degraded in rapid rate against CO2 treatment in both the gaseous and supercritical phases. It was considered that the degradation of CBP increased with increasing the CO2 concentration, CO2 pressure and treatment time. With the longer treatment time against supercritical CO2 in higher concentration and pressure, the residual values of mechanical properties (IB strength, MOR, and MOE) were decreased, indicating CBP performance was degraded rapidly compared to treatment in the lower concentration and pressure of CO2 or under gaseous phase. High coefficient determination values between the residual values of CBP properties, and the treatment time and CO2 concentration were observed and the simple linear model was found to estimate the long term degradation of CBP among the properties and affecting factors.