Preparation and study on the performance of polymer-modified cement-based composite insulation materials

摘要

In the experiment, the influence of water-cement ratio on the strength of composite material was studied, and the optimal water-cement ratio was 0.45. The influence of different dosages of foam stabilizer on the mechanical properties of composite material was studied, and the optimal dosage of foam stabilizer was 3%. And the influence of different dosages of polymer on the strength and water absorption of composite material was studied, and the optimal dosage of polymer was 1.5%. In this ratio, the compressive strength is 0.53 MPa, flexural strength is 0.39 MPa, 2h water absorption is 41.1%, 24h water absorption is 43.1% and thermal conductivity is 0.048 W/(m·K). Meanwhile, scanning electron microscopy is used to observe the internal morphology of the samples, and the related action mechanism is explored.