Whisker toughened and reinforced geopolymer and preparation method thereof

The invention relates to a whisker toughened and reinforced geopolymer which is prepared from the following raw materials in parts by weight: 100 parts of a silicon-aluminum raw material, 35-80 partsof an excitant, 1-9 parts of whiskers and 0.03-0.3 part of a dispersing agent, wherein the excitant is a mixture of sodium hydroxide and water glass with the modulus of 3.0-3.5 in a weight ratio of 1:4-1: 5. According to the preparation method, the geopolymer is modified by adopting the whiskers; after the whiskers are added, harmful holes of the geopolymer can be effectively filled; according tothe present invention, the polymer network structure is filled with the filler, the bridging effect is provided, the material interface is increased so as to improve the surface energy of the matrix,effectively prevent the generation and the expansion of cracks, and improve the mechanical property of the geopolymer, the geopolymer has characteristics of improved strength, high strength, good toughness, good high temperatur