What is the main role played by silicone waterproofing agent?
Silicone water repellent can be used to coat the surface of decorative mortar, natural or artificial marble, natural or artificial granite, decorative concrete, fair-faced concrete, block, brick, etc. It mainly plays the following roles:
1. Anti-fouling and dust removal function
The masonry surface, concrete and mortar surfaces of building facades have a large number of micro cracks, depressions and pores, causing water absorption and hanging dust.
When the atmospheric precipitation and the above-mentioned surface dust mixed to form black sewage, downward flow constantly penetrate into the crevices, dry to form black stripes or flake stains, seriously damage the decorative effect of the decorative surface.
But when the application of silicone waterproofing agent, the formation of hydrophobic film will make the sewage in the form of beads rolled down, both to prevent the infiltration of sewage inward, but also to make the sewage water beads rolled down when the dust attached to fall together.
As a result, the silicone wall surface washed by heavy rain (or artificial spraying) is completely different from the untreated wall surface, showing a new look, and the serious pollution after the rain is obviously improved.
2. Prevent weathering and whitening
It is caused by the weathering inorganic salt aqueous solution migrated to the wall surface to form crystals, volume expansion of the stress damage caused by cracks on the wall surface. This destructive effect day after day repeated action, so that the wall surface brittle molting, until the loss of function.
Waterproofing agent in the wall surface to form a hydrophobic layer, avoiding the penetration of external precipitation inward and internal salt solution migration outward, thus eliminating the weathering generated by salt precipitation.
Analysis of white refers to the migration of free calcium hydroxide aqueous solution in the building wall, dry and deposited on the surface of the wall, and gradually carbonization reaction with carbon dioxide to produce insoluble carbonate, attached to the surface of the wall, uneven patch of white marks.
The uneven migration of the aqueous solution of calcium hydroxide will cause the wall surface to be whitish and whitish, which not only affects the decorative effect, but also has a great destructive effect. The hydrophobic layer formed by the silicon coating on the wall surface is an effective measure to avoid white separation.
In addition, silicone stripping can prevent microbial growth, frost damage, acid rain corrosion, and color retention aging.
1) high elasticity: the film elongation at break can reach more than 1000%, suitable for expansion joints and deformation joints, can effectively solve a variety of structures due to stress deformation, expansion cracking, puncture or poor connection and leakage, corrosion and other problems; effective treatment of structural deformation, to ensure that the waterproof effect.
PVC waterproofing membrane is an excellent green waterproofing materials, with abundant raw materials, renewable use, harmless to human body and the environment and other advantages. Therefore, in the country's "fourteenth five-year plan" proposed "double carbon" goal, the country vigorously advocate emission reduction, PVC waterproofing roll-roofing has been the key promotion products in the field of polymer roll-roofing, in the building waterproofing industry occupies an important position.
PVC is the abbreviation of polyvinyl chloride waterproofing roll-roofing material, is a new type of polymer waterproofing roll-roofing material made of polyvinyl chloride resin and additives such as anti-oxidants and anti-UV. Ltd. production of PVC waterproofing membrane with high tensile strength, high elongation, shrinkage rate is small, low temperature flexibility, long service life, the product performance is stable, convenient construction.
Spray quick-setting rubber asphalt waterproofing coating consists of rubber asphalt emulsion A component and emulsion-breaking agent B component. A component consists of high solids emulsified asphalt and polymer. It will be co-blended modified to form a water-soluble mixture of polymer and emulsified asphalt. component A and component B is sprayed from the two nozzles of the special spraying equipment on site, atomized mix quickly after breaking the emulsion dehydration (within 10 s), coagulation into a film. After efforts, a dense, continuous and complete rubber asphalt coating is formed with high elongation, strong elasticity, excellent durability and waterproof, anti-corrosion, impermeability and protection. A spraying can reach more than 2 mm thickness, fast construction speed, environmental protection.
Silicone waterproofing agent construction is generally divided into grass-roots surface cleaning, crack repair, spraying construction three procedures.