苯丙乳液水泥复合材料的拉伸力学性能

Tensile Mechanical Property of Styrene-Acrylic Cement Composite Material

制备了一种苯丙乳液水泥复合材料(SCCM),并采用正交试验的方法对其拉伸力学性能进行了测试和分析。结果显示:粉液比决定了SCCM固化反应的形式,是影响其各项拉伸力学性能的主要因素;粉液比较低(0. 45)时,随着水泥掺量的增大SCCM的变形能力和韧度变差,粉液比较高(0. 65、0. 85)时,随着水泥掺量的增大SCCM的强度、变形能力和韧度逐渐提高,粉液比越高提高越明显;滑石粉能提高SCCM的强度,重质碳酸钙能提高SCCM的变形性能和韧度;粉液比为0. 65、水泥掺量为0. 35、填料类型选用重质碳酸钙时,SCCM的各项拉伸力学性能均较好,具有很大潜力用作建筑接缝填缝材料。

By using orthogonal experiment styrene-acrylic cement composite material(SCCM)was designed and prepared,its tensile mechanical properties were tested and analyzed.The results indicate that powder-liquid ratio determines the curing reaction forms of SCCM,which is the main factor influencing tensile mechanical property of SCCM.When powder-liquid ratio is low(0.45),with the increase of cement content the deformation performance and tenacity of SCCM are declined.When powder-liquid ratio is high(0.65,0.85),with the increase of cement content the strength,deformation performance and tenacity of SCCM are improved,it will be more obvious if the powder-liquid ratio is higher.Talcum powder can improve the strength of SCCM,heavy calcium carbonate can improve its deformation performance and tenacity.When the powder-liquid ratio is 0.65,the cement content is 0.35,the packing type is heavy calcium carbonate,the tensile mechanical properties of SCCM are better.SCCM has a great potential to be used as a building joint material.