抑霉菌调湿材料及其抑霉菌机理研究

ABSTRACTABSTRACTIndoor mold pollution and unsuitable humidity are very harmful to air environment,human health and building enclosure.At present,the main means of humiditycontrolling are air conditioning equipment and humidity-controlling materials.Butthe energy consumption of air conditioning is high.Although mosthumidity-controlling materials have a certain humidity-controlling property,they willalso breed mold when they are in high humidity environment for a long time,so theycannot solve the problem of mold pollution fundamentally.Therefore,it is of greatsignificance to develop a kind of building material which combineshumidity-controlling and mold inhibition to improve the indoor environment andreduce the cost of building maintenance.In this study,the mold-inhibiting humidity-controlling materials was made ofdiatomite with good humidity-controlling and loading properties,the modifiedadmixtures with good mold-inhibiting properties and sphagnum with goodhydroscopicity,the mix proportion of them was 75:25:15 and it's mold-inhibitingproperties,influencing factors were studied by petri mean.In addition,themold-inhibiting mechanism were also studied by technology of SEM,EDS and TEMand test of mold leakage.The results show that:1)The materials have good mold-inhibiting,the degree of mold growth of them is0 grade in solid medium,the germination time of P.citrinum and Asp.niger's sporeson the surface of them is on day 18 and 15,respectively and the mycelial growth alsobe inhibit in Czar's medium.2)The main mold inhibiting component of the material is modified admixture,followed by diatomite,while sphagnum can't inhibit mold;Mold growth degree ofmodified admixture is 0 grade,when in the Czar's medium test,the germination timeof P.citrinum and Asp.niger on it is on day 17 and 23,respectively.The higher theconcentration of humidity-controlling material,the stronger the inhibition effect onP.citrinum and Asp.niger.When the concentration of the materials is greater than1.5/100 g/ml,the mold inhibiting property of them is enhanced observably.The larger