胶体化学法制备有机-无机复合泡沫玻璃保温材料研究

Study on Preparation of Organic-inorganic Composite Foam Glass Thermal Insulation Materials by Colloid Chemistry Method

采用胶体化学工艺实现玻璃与有机聚合物的复合,并在较低温度下发泡制得超低密度的有机-无机复合泡沫玻璃保温隔热材料。相比于低温泡沫玻璃和传统泡沫玻璃,复合泡沫玻璃的孔结构更加均匀,孔径更小,闭孔率更高;力学性能明显改善,抗压强度最高为1.00 MPa(ωp=8.6%),弹性模量最低为18.33 MPa(ωp=10.5%);耐水性得到改善,常温下体积吸水率4.9%(ωp=10.5%),强度软化系数90.5%(ωp=10.5%),2 h煮沸样块的抗压强度最高仍然可保留60.9%(ωp=10.5%)。孔结构、力学性能和耐水性等性能研究表明,该材料是一种具有广泛应用前景的多孔保温隔热材料。

The novel organic-inorganic composite foam glass thermal insulation material is foamed from sol which complex with polymer through colloid chemistry process. Comparing with low-temperature foam glass and traditional foam glass, the organic-inorganic composite one is more uniform, it＇ s pore diameter is smaller, percentage of closed pore is bigger. The mechanical properties are improved obviously, the compressive strength was increased to its highest of 1.00 MPa （ωp = 8.6% ）, and the elastic modulus was decreased to its lowest of 18.33 MPa （ωp = 10.5% ）. Water resistance is also improved, water absorption rate at room temperature is 4.9% （ωp = 10.5% ） and softening coefficient is 90.5% （ωp = 10.5% ） ; The strength retention rate is up to 60. 9% （ωp = 10. 5% ） after 2 h hot water treatment. Pore structure, mechanical properties and water resistance of organic-inorganic composite foam glass showed that it is a porous insulation material with broad application prospects.