膨胀珍珠岩保温材料的制备与性能

目的研究膨胀珍珠岩保温材料的制备工艺，解决传统珍珠岩保温材料吸水严重等问题．方法以膨胀珍珠岩为主要原料，添加无机-有机胶黏剂，用40mm×40mm×120mm模具在SVC-4500VA压力机上模压成型，在干燥设备内烘干制得试样．测试其导热系数、抗压强度、憎水率等性能，初步探索制作工艺．结果试验表明在胶黏剂掺量为7％～10％，成型压力为0．36MPa时，试样的导热系数为0．058W／（m·K），抗压强度为0．4MPa，憎水率为98％，防火等级为A级，符合GB／T5464—2010／ISO1182：2002中的规定．结论胶黏剂的掺量是制备试样强度的主要因素，随着胶黏剂掺量的增加，试样的强度和导热系数均逐渐增加；随着胶黏剂中有机组分的增加，试样的憎水率逐渐提高；在一定范围内，试样的导热系数随着成型压力的增加而降低，当超过某一阈值时，随压力的增加而增大．

Preparation and Performance Study of the Expanded Perlite Insulation Materials

To solve the traditional perlite insulation materials absorbing serious problems, the perlite insula- tion material preparation process is studied. With the expanded perlite as a main raw material, adding the inorganic-organic adhesive and then compression molding forming using a 40 mm × 40 mm × 120 mm mold by the machine SVC -4500VA, a sample is obtained after drying. The thermal conductivity, the compressive strength and the water-repellent rate are tested and the production process is studied preliminarily. When the adhesive content is 7 to 10% and the molding pressure is 0.36MPa,results show that the thermal conductivity of the sample is 0. 058 W/（ m-K）, the compressive strength is 0. 4 MPa, the hydrophobic is 98% and the fire rating is Class A, which are in line with the regulations of GB/T 5464- 2010/ISO 1182：2002. It is shown that the dosage of the adhesive is a major effect on the sample strength. With increase of the adhesive dosage, the strength and thermal conductivity of the sample gradually increase; with increase of the organic components in the adhesive, the hydrophobic gradual enhances. In a certain range, the thermal conductivity of the sample declines with increase of the forming pressure. However, when a certain threshold value is exceeded, it increases with increase of the pressure..