新型低碳墙体保温膏的制备和性能

Development and properties of low-carbon ceramic wall insulation plaster

以无机粘结剂和少量成膜剂为胶凝材料,以闭孔膨胀珍珠岩、空心陶瓷微珠为保温骨料,以膨润土、OK粉为填料,以氢氧化铝和轻烧粉为阻燃剂,添加少量表面活性剂和聚丙烯纤维,利用有机、无机复合方法和颗粒级配理论,制备一种新型低碳陶瓷墙体保温膏。研究了无机粘结剂与有机成膜剂掺量及配比、闭孔膨胀珍珠岩颗粒级配及表面活性剂掺量对保温膏保温效果和抗折强度的影响。结果表明,优选原料种类和配比,采用适宜技术路线,可制备出低碳环保、隔热保温、抗折强度高、阻燃效果好、抗裂性能优异的新型墙体保温膏。该保温膏导热系数为0.049 W/(m.K),抗折强度为1.2 MPa。

Based on organic and inorganic composite technology and grain composition theory,new low-carbon ceramic wall insulation plaster was prepared with inorganic binder and small amount of film former as cementitious materials, spherical closed-porous perlite and ceramic cenosphere as insulation materials, bentonite, OK powder as filling materials, aluminum hydroxide and light calcined powder as flame retardants and with a small quantity of surfactant and mekralon. The effects of inorganic binder and film former content and their proportion,perlite grain composition and surfaetant content on insulating conductivity and flexural strength of the insulation plaster were investigated. Results show that a new type of low-carbon and eco-friendly wall insulation plaster with excellent thermal insulating properties, strong flexural strength, and good fire resistance and crack resistance can be produced by use of proper raw materials and appropriate technology. It has a thermal conductivity of 0.049 W/（m·K） and a flexural strength of 1.2 MPa.