Method for preparing vitrified micro bubbles and polystyrene particle composite thermal insulation mortar by modification of foaming agent

The invention relates to a preparation method for composite thermal insulation mortar. The method comprises the following steps: cement, fly ash, redispersible latex powder, polypropylene fiber, animal protein foaming agent and lauryl sodium sulfate foaming agent are poured into a high speed mixer to be evenly mixed, and then the mixture is added with vitrified micro bubbles and polystyrene particles to be evenly mixed to obtain the composite thermal insulation mortar. The invention has the advantages that the lauryl sodium sulfate foaming agent modified by using the animal protein foaming agent is rapidly dry-mixed and stirred to obtain the composite thermal insulation solid mortar, and the rapid production is favorable for saving energy and reducing consumption; the composite thermal insulation mortar during the construction is easy to uniformly stir, is not easy to layer, is long in opening time and also has the advantages of easy sale by bulk, easy coating and easy scraping, heat preservation, energy saving, simple operation and convenient construction; and the coefficient of heat conductivity is 0.055-0.067 W/m.k..