Preparation method of lightweight thermal-insulation decoration surface material for outer wall

Abstract

The invention provides a preparation method of a lightweight thermal-insulation decoration surface material for outer wall, and the method is characterized by comprising the following steps: firstly, adopting ceramic green body waste material, Laiyang soil, sedimentation tank waste material, polished tile waste residue and the like as raw materials respectively at different mass ratios to obtain four types of pellet granules, namely A pellet granule, B pellet granule, C pellet granule and D pellet granule; then uniformly mixing the A pellet granule, the B pellet granule and the C pellet granule according to a mass ratio of A pellet granule to B pellet granule to C pellet granule of 1:2:1, then uniformly distributing the pellet granules in the concavo-convex mold, and paving the surface with a layer of D pellet granule as a base material, obtaining a green body under a pressure of 220 MPa after the process of second material distributing, wherein the mass ratio of the base material D pellet granule to the other three pellet granules is 1-3:10; and sequentially performing the process of drying, jet drawing patterns and sintering so as to obtain the lightweight thermal-insulation decoration surface material for outer wall. Test results show that the lightweight thermal-insulation decoration surface material for outer wall has characteristics of low specific gravity, uniform pore size distribution, low water absorption, high bending strength and low thermal conductivity. The decoration surface material has high wear resistance and enables demonstration of the appearance of stone.

Description

technical field [0001] The invention provides a production method of a lightweight heat-preservation facing material for exterior walls, which belongs to the technical field of ceramic processing. Background technique [0002] For a long time, the construction industry has been a large consumer of energy and resources. Environmental protection, material saving, energy saving and consumption reduction are the primary goals of the industry's sustainable development. important practical significance. The current wall structure is mainly composed of organic thermal insulation and exterior wall finishing materials. Organic thermal insulation materials are flammable, which brings great hidden dangers to construction and later use; High and easy to fall. Therefore, it is necessary to develop a facing material for exterior walls that integrates light weight, thermal insulation and decorative properties. [0003] There is a large amount of waste in the production process of cerami...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned light-weight materials produced by using only ceramic waste without using external foaming agent have obvious disadvantages. The main reason is that the single base material prepared from ceramic waste determines the release of gas, the growth of pores and the formation of blanks during the high-temperature vitrification process. After the components of the high-temperature viscosity of the body are completely determined, the pore structure (size, connectivity and distribution) and performance (specific gravity, water absorption, dimensional stability, thermal insulation effect and mechanical properties) of the material will be mutually restricted, and it is difficult to achieve the optimum good effect

There are also problems in the decorative performance of the produced materials, mainly manifested in very poor surface wear resistance, which will bring great difficulties to the production, packaging, transportation and construction of the materials, because the air bubbles are easily formed in the high-temperature melt during firing. Floating and growing obviously, the hole wall is thin and uneven, which reduces the wear resistance of the material surface

However, the composition of ceramic waste used in production is prone to fluctuations with changes in the production process, which will have a great impact on the process of producing lightweight materials using a single ingredient method, and the performance of the product will become unstable.