Study On Thermal Insulation Materials Composed Of EPS And Gypsum

Non-forming thermal insulation material composed of EPS particles and building gypsum may overcome the drawbacks of thermal insulation material of EPS board, which include poor affinity, complex construction and comprehensive high cost. The thermal insulation material composed of EPS particles and building-gypsum may fully use industrial waste, protect ecological environment and save energy. This paper presents the experiment study on thermal insulation material composed of EPS and gypsum.To overcome the shortcomings of non-water resistance of gypsum, the building gypsum is modified by using of slag, lime and cement, and water resistance experiment of gypsum is studied. It is showed that the modified gypsum has higher strength and soften coefficient, so the gypsum may replace the traditional cement as powder material of thermal insulation material.EPS particles chose as thermal insulation aggregate, study on thermal insulation materials composed of EPS and gypsum is carried out, the effect of powder material, alkali-resistance glass fiber and cellulose ether on the behavior of thermal insulation material. Based on experiment study, the optimal ratio of thermal insulation material is determined, by single factor analysis and orthogonal text, the strength, thermal conductivity, apparent density, linear shrinkage and soften coefficient of optimal thermal insulation material is measured. It is showed that each target of experimental study on thermal insulation material composed of EPS and gypsum reaches the standard of JG158-2004.Theoretical analysis of the modified mechanism of EPS particles, antic rack, strength and thermal insulation mechanism were carried out.