摘要
以镁水泥为胶凝材料,双氧水为发泡剂,硬脂酸钙为稳定剂,聚丙烯酰胺为增稠剂,采用化学发泡法制备了轻质镁水泥隔墙板.以水灰比、发泡剂添加量、稳定剂添加量和增稠剂添加量作为试验因素,体积密度、压缩强度和弯曲强度作为考核指标,优选出了制备轻质镁水泥隔墙板的最优工艺为:水灰比1.35,发泡剂添加量7‰,稳定剂添加量7‰,增稠剂添加量1.5‰.此时,体积密度为0.60 g/cm~3,压缩强度为9.86 MPa,弯曲强度为2.65 MPa.
Lightweight magnesium cement partition board was prepared by chemical foaming process,in which magnesium cement as cementing material,hydrogen peroxide as foaming agent,calcium stearate as stabilizer and polyacrylamide as thickener.The water-cement ratio,amount of hydrogen peroxide,amount of stabilizer and amount thickener were used as test factors.Bulk density,compressive strength and flexural strength were used as evaluation indicators.The optimal preparation process of the lightweight magnesium cement partition board was as follows:The water-cement ratio was 1.35,the amount of hydrogen peroxide was 7‰,the amount of stabilizer was 7‰,and amount thickener was 1.5‰.At this time,the bulk density was 0.60 g/cm~3,the compressive strength was 9.86 MPa,and the bending strength was 2.65 MPa.
引文
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