Rapid curing of cement-bonded particleboard .4. Sodium silicate as a fortifier during steam injection pressing

被引：0

作者：

Nagadomi, W ^{[1
]}

Kuroki, Y ^{[1
]}

Eusebio, DA ^{[1
]}

Ma, LF ^{[1
]}

Kawai, S ^{[1
]}

Sasaki, H ^{[1
]}

机构：

[1] KYOTO UNIV, WOOD RES INST, UJI, KYOTO 611, JAPAN

来源：

MOKUZAI GAKKAISHI | 1996年 / 42卷 / 08期

关键词：

cement-bonded particleboard; steam injection pressing; sodium silicate; magnesium chloride; cement hydration;

D O I：

暂无

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

To improve the properties of cement-bonded particleboard (CBP) produced by applying steam injection pressing, sodium silicate (Na2SiO3) was added to ordinary portland cement (OPC) as a fortifier. Some CBPs also were produced using only Na2SiO3 or sodium hydrogen carbonate (NaHCO3) as fortifiers while magnesium chloride (MgCl2) was added as an accelerator for cement hydration. The effects of varying the contents of Na2SiO3, the methods of curing, the soaking times of solutions, the contents of MgCl2, the steam pressures (SP), and the total pressing times (TPT) were evaluated. It was found that Na2SiO3 was more effective than NaHCO3 as a fortifer with or without the addition of MgCl2. CBPs with Na2SiO3 had a favorable effect on linear dimensional stability even without the presence of MgCl2. Considering the results of mechanical properties and dimensional stability tests, optimum conditions can be achieved from CBPs with 5% Na2SiO3 and without the addition of MgCl2 for the water soaking curing of 14 days. The most favorable SP and TPT were found to be at 1.5 kgf/cm(2) and 12 mins, respectively.

引用

页码：769 / 775

页数：7