Polystyrene foam grain light-weight aggregate and preparation method thereof

Abstract

The invention discloses a polystyrene foam grain light-weight aggregate and a preparation method thereof. The polystyrene foam grain light-weight aggregate is prepared from the following raw materials: polystyrene foam grains, E44 epoxy resin, T31, dibutyl ester and acetone. The preparation method comprises the following steps: weighing polystyrene foam grains, E44 epoxy resin, T31, acetone and dibutyl ester according to the mass ratio of 1: (2.5-3): (2-3): (0.25-0.3): (0.25-0.3) for later use; sequentially adding T31, acetone and dibutyl ester into E44 epoxy resin to prepare an epoxy resin adhesive; then pouring the prepared epoxy resin adhesive into the polystyrene foam grains, and uniformly stirring to obtain the polystyrene foam grain light-weight aggregate. The prepared polystyrene foam grain light-weight aggregate has the characteristic of light weight, overcomes the shortcoming that the surface cohesive force between the polystyrene foam grains and a binding material is relatively poor, is extremely low in water absorption and relatively good in service durability, and facilitates reclamation and utilization of waste polystyrene foam.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a lightweight aggregate of polystyrene foam particles and a preparation method thereof. Background technique [0002] In recent years, polystyrene foam has developed rapidly, and the annual output has exceeded 50 tons. The disadvantage of polystyrene foam is that it cannot be reused, and it cannot be degraded by itself, so that nearly ten million cubic meters of waste polystyrene become white pollutants every year because they cannot be treated and degraded. In the prior art, artificial degradation is mainly used to process waste polystyrene foam, which costs a lot. If these discarded polyphenylene foams are fully utilized, not only can the problem of white pollution be solved, the development of polystyrene foams can be promoted, but also a large amount of capital expenditures caused by waste disposal can be reduced. In order to solve the problem of recovery and utilization o...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, when polystyrene foam particles are used as the filler aggregate of the cementitious material, the cohesive force between the particles and the cementitious material is poor; at the same time, the surface modification changes the advantage that the polystyrene foam particles do not absorb water, which will increase Water absorption by large polystyrene foam particles, reducing composite durability