Totally closed shell-shaped phase change and temperature adjustment aggregate and method for preparing same

Abstract

The invention relates to totally closed shell-shaped phase change and temperature adjustment aggregate and a method for preparing the same. The phase change and temperature adjustment aggregate is mainly characterized in that: the phase change and temperature adjustment aggregate is prepared from a phase change core material and an encapsulation shell material, wherein the phase change core material is prepared from paraffin wax or saturated fatty acid, expanded perlite particles and sintered material or slag material of silica; and the encapsulation shell material is prepared by mixing aluminum sulfate, sodium silicate and an emulsifier. By the preparation method, the prepared phase change and temperature adjustment aggregate has good thermal storage characteristic, water resistance and permanent ageing resistance and can radically solve the problems of the degradation of the thermophysical property and leakage of the phase change material in a cyclic process. The phase change and temperature adjustment aggregate can be mixed with various other building materials for use and has the advantages of remarkable energy-saving effect, light weight, high strength, good environmental protection effect and the like.

Description

technical field [0001] The invention belongs to the technical field of thermal insulation materials for building walls, and relates to a fully enclosed shell-type phase-change temperature-regulating aggregate and a preparation method thereof. Background technique [0002] With the continuous development of science and technology, people have put forward higher requirements for the energy-saving effect of building insulation walls. Coupled with the development of modern buildings to high-rise buildings, the envelope structures used are required to be lightweight materials. However, the heat capacity of ordinary lightweight materials is small, resulting in large fluctuations in indoor temperature. In existing building thermal insulation systems, polystyrene boards, rock wool boards, mineral wool boards, or thermal insulation slurry mixed with polystyrene particles are usually used as external wall thermal insulation materials to reduce the impact of the external environment o...

AI Technical Summary

Problems solved by technology

However, a key problem encountered in the research and production of phase-change temperature-regulating materials is the packaging technology of phase-change materials. In the prior art, bone glue-based materials are usually used to package phase-change materials. There are many defects in the packaging of bone glue materials, such as poor sealing, poor film-forming performance, low strength, easy melting at slightly high temperature, easy leakage, poor working stability, loss of temperature adjustment performance, and failure to reach the closed state, etc., serious Affect the use effect and service life of phase change materials

Up to now, the packaging technology of phase change materials has not been ideally solved, and it restricts the promotion and application of phase change materials in the construction field