The role of rubber powder and cellulose in tile adhesive


Release time:

2020-11-02

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Rubber powder cellulose

The role of rubber powder and cellulose in tile adhesive
 
The rubber powder changes the consistency and smoothness of the system in the wet mixing state, and the latex powder is added to improve the cohesion. After drying, the adhesive force of the smooth and dense surface layer is provided, and the interface effect of sand and pores is improved,Under the condition of the addition amount guarantee, the film is enriched at the interface, so that the tile adhesive has flexibility, reduces the elastic modulus, absorbs the thermal deformation stress to a large extent, and has water resistance and buffer in the later period. Temperature and material deformation are inconsistent. Powder flexibility and rigidity can generally be determined according to the glass temperature, glass temperature below 0 degrees, partial flexibility. Which rubber powder is needed in mortar, generally According to the performance characteristics of the product to determine. Tile adhesives need to choose a better adhesive force of rubber powder.
 
HP cellulose for fresh mortar to provide good water retention and construction, especially for the wetting area has a key role. In order to ensure the smooth progress of the hydration reaction, the substrate can be prevented from excessive water absorption andSurface water evaporation. Due to its air-entraining properties, the bulk density of the ceramic tile adhesive is reduced, which saves materials and reduces the elastic modulus of the hardened mortar body.
 
Cement has high compressive strength and elastic modulus and water resistance, but as the middle layer of the cladding material, its bond strength can play a role, to a large extent depends on the substrate and the cladding material.Porosity, the reason is that the cement mortar seeps into the void before the initial setting and hardens, which plays an anchoring role similar to the key inserted into the keyhole, while the high elastic modulus cannot eliminate the surface layer and the substrate, due to the collection. The deformation caused by shrinkage temperature is inconsistent and internal stress is generated, which can not be released, resulting in hollowing cracking.
 

Key words:

Rubber powder cellulose