粉煤灰纤维架构弹性保温隔热材料的研究

选用了粉煤灰纤维、超细粉煤灰纤维作为空间架构材料,采用阴离子表面活性剂发泡,以纯熟料水泥凝胶硬化定型,辅以真空抽吸破泡,通过充分干燥及表面防水处理工艺制得了粉煤灰纤维架构弹性保温隔热材料。结果表明:当超细粉煤灰纤维掺量为5%~15%、粉煤灰纤维与纯熟料水泥质量比为0.25、纯熟料水泥掺量为5%~20%时,材料的导热系数普遍在0.04~0.06 W/(m·K)之间,表观密度集中在80~150 kg/m^3,抗压强度普遍低于0.20 MPa,所制得的保温隔热材料具有一定的弹性,永久变形量在0.050~0.090 mm之间。

Study on Elastic Thermal Insulation Materials with Fly Ash Fiber Structure

Fly ash fiber and ultra-fine fly ash fiber were selected as space structure materials.The anionic surfactant was used for foaming,the pure clinker cement gel was used to harden the shape,and the vacuum suction was used to break the foam,and the fly ash fiber structure elastic thermal insulation material was prepared through full drying and surface waterproof treatment.The results show that when the content of ultra-fine fly ash fiber is 5%~15%,the mass ratio of fly ash fiber to pure clinker cement is 0.25,and the content of pure clinker cement is 5%~20%,the thermal conductivity of the material is universal between 0.04~0.06 W/(m·K),the apparent density is concentrated in 80~150 kg/m^3,and the compressive strength is generally lower than 0.20 MPa.The prepared thermal insulation material has certain elasticity and the permanent deformation is between 0.050~0.090 mm.