Insulation system with polycrystalline insulation mortar

Abstract

The invention discloses an insulation system with polycrystalline insulation mortar, which belongs to the technical field of the building material. The insulation system comprises interface mortar, insulation mortar and waterproofing mortar, wherein the insulation mortar comprises the following components: cement, redispersable latex powder, cold water type polyvinyl alcohol, hydroxypropyl-methylcellulose ether, air entraining agents, sodium silicate, inorganic retarder and polystyrene particles. Compared with the prior art, the invention has the following advantages of: 1, solving the problem that the bonding strength of the inorganic cementitious material for penetration is not sufficient, and significantly improving the bonding strength and the compressive strength of the whole insulation system; 2, improving the construction property of the material and the insulation effect of the system; 3, improving the construction property and enhancing the long-term strength of the product;4, improving the waterproofing function of the system, and changing the rigidity of various kinds of polycrystalline mortar into softness, thereby improving the impact resistance, bending resistance,tensile strength, shrinkage resistance and other strain capacities of the insulation system; and 5. improving the bending resistance and the tensile strength of the material and the physical anti-cracking performance of the system.

Description

technical field [0001] The invention belongs to the technical field of building materials, and specifically relates to a thermal insulation system with polycrystalline thermal insulation mortar, which is mainly used for internal and external energy-saving and thermal insulation of walls or roofs of building enclosure structures. Background technique [0002] At present, domestic and foreign building wall insulation generally adopts plate or component thermal insulation materials, which are expensive, difficult in construction technology, and poor in impact resistance, but have good thermal insulation effects and are suitable for cold regions; there is another thermal insulation material, namely Rubber powder polystyrene particle external wall thermal insulation system, the thermal insulation system is composed of interface layer, thermal insulation layer, anti-crack protective layer, which plays the role of thermal insulation and protection. In the prior art, there is cement...

AI Technical Summary

Problems solved by technology

In the prior art, there is cement in each layer of the rubber powder polystyrene particle external wall insulation system, but because the cement is a hydraulic material and forms cement stone with hydrate, it usually takes 28 days to reach the design strength, and it is dehydrated prematurely. When the hydration stops, the strength will no longer increase. The cement-containing material is a plastic material mixed with water. The volume shrinks with the evaporation of water. During the shrinkage process, if the cement-containing material has no strength or low strength, the shrinkage stress is greater than that of the material. The amount of shrinkage will show as relatively concentrated large cracks, and there will be problems of cracks caused by expansion and shrinkage caused by temperature changes; secondly, the impermeability, anti-seepage, The waterproof ability is poor, and if the impermeability and waterproof performance are poor, it is easy to get damp when it is wet by rain and snow or in a humid air environment, such as in areas with high air humidity such as East China, which will form in the gaps in the thermal insulation layer. Water vapor, heat energy will be conducted through water vapor, which will weaken the heat preservation and energy-saving effect of the heat insulation layer; in addition, the existing rubber powder polystyrene particle external wall insulation system has the characteristics of rigidity, so it is easy to cause heat loss due to temperature stress or other external forces. Impact, expansion or shrinkage and other brittle failures; again, the existing rubber powder polystyrene particle external wall insulation system has the disadvantages of low bond strength, low impact resistance and low compressive strength, and in hot summer and cold winter regions due to the temperature difference effect , it is easy to produce local hollowing, shedding and other phenomena in the interface layer