添加水玻璃增强植物纤维发泡材料的力学性能  

Reinforcement of mechanical properties of plant fiber-based foaming material by adding sodium silicate

作　　者：林振[1] 牛敏[1] 谢拥群[1] 

机构地区：[1]福建农林大学材料工程学院,福建福州350002

出　　处：《福建农林大学学报（自然科学版）》2013年第4期433-437,共5页Journal of Fujian Agriculture and Forestry University:Natural Science Edition

基　　金：国家自然科学基金资助项目(30871982);国家"十一五"科技支撑计划资助项目(2008BADA9B01)

摘　　要：对水玻璃的粘度、价键结合能和表面微观形态进行测定和观察,结果表明当水玻璃的添加量为40%时,在溶液pH值为4.6、SiO2浓度为0.5 mol.L-1、干燥温度为95℃的条件下,成品的内结合强度从0.21 MPa提高到1.11 MPa;弹性模量从13.50 MPa提高到70.31 MPa;静曲强度从0.20 MPa提高到5.31 MPa;抗压强度(10%压应变)从0.29 MPa提高到3.25MPa.表明添加水玻璃可以增强植物纤维发泡材料的力学性能.The viscosity, binding energy and microscopic structure of sodium silicate gel were determined. The results showed under the conditions of adding 40% sodium silicate, pH value of 4.6, SiO2 concentration of 0.5 mol . L-I and drying temperature of 95 ℃, the internal bonding strength of the composite increased from 0.21 to 1.11 MPa; elasticity modulus increased from 13.50 to 70.31 MPa; modulus of rapture increased from 0.20 to 5.31 MPa, compressive strength （at 10% strain） increased from 0.29 to 3.25 MPa. It suggested that the mechanical properties of plant fiber-basod foaming material could be enhanced by adding sodium silicate.

关 键 词：水玻璃 植物纤维 发泡材料 力学性能 

分 类 号：TS653.929[轻工技术与工程]