空心玻璃微珠种类及加入量对无机非金属固体浮力材料性能的影响

Effect of Type and Additive Amount of Hollow Glass Beads on Performance of Inorganic Non-metallic Solid Buoyancy Materials

以偏高岭土、钠水玻璃与空心玻璃微珠（HGB）为主要原料制备无机非金属固体浮力材料。研究了四种不同型号HGB对材料密度和抗压强度的影响,以及HGB加入量对材料成型性、密度、孔隙率、抗压强度、吸水性和冲击断面微观形貌的影响,并对材料的耐高温性能进行了测试。研究结果表明：综合考虑不同型号HGB的自身参数及对材料密度和抗压强度的影响,型号为S38HS的微珠效果最佳;随着HGB-S38HS加入量的增加,材料密度和抗压强度逐渐降低,而孔隙率和吸水率逐渐增大;当HGB-S38HS加入量为30%-35%时,制得的无机非金属固体浮力材料具有相对较低的密度和相对较高的抗压强度,分别为0.82-0.90 g/cm3和8.4-9.2 MPa,且耐高温性能较好,可达到550℃。

The inorganic non-metallic solid buoyancy materials were prepared by using metakaolin, sodium silicate and hollow glass beads （ HGB ） as the main raw materials. The effects of four different types of HGB on density and compressive strength of the materials were investigated. It also researched effect of content of HGB on formability, density, porosity, compressive strength, water absorption capacity and micro-morphology of the impact fracture surface of the materials, and the high temperature resistance property of the prepared materials was tested. The results show that HGB-S38HS is the best by comprehensive consideration from the parameters of HGB with different types and their effects on density and compressive strength of the materials. With the content of HGB-S38HS increasing, the density and compressive strength of the materials decrease, however, the porosity and water absorption of the materials increase. When the content of HGB-S38HS is 30%-35%, the prepared materials have relatively lower density and relatively higher compressive strength, which are 0.82-0.90 g/cm3 and 8.4- 9.2 MPa respectively, and the materials have better high temperature resistance property which can reach 550 %.