Detailed construction sealing glue

Building sealing glue is mainly used for building various seams or holes sealed to prevent gas , liquid, solid through and prevent displacement of structural materials in the structure is destroyed, and thus play a thermal insulation, sound insulation, waterproof, security ties dustproof, gas-proof , fireproof, anti-corrosion, shock absorption and prevent accumulation of foreign joint function .
First, the classification of building sealing glue
( 1 ) , as classified according to their composition , a polysulfide rubber, chloroprene rubber, acrylic , polyurethane, butyl rubber, silicone rubber, rubber compound , and other thermoplastic elastomer ;
( 2 ) , according to the construction shape , divided into hot coating type , coating type cold curing reaction -and solvent evaporation , etc.
( 3 ) , according to use is divided into windows and doors , caulking to use, waterproof shockproof , precast wall with an equal .
Second, the selection basis for building sealing glue
( 1 ) , a good low permeability ;
( 2 ) , filling them with good workability ;
( 3 ) , the substrate is compatible with seams , pollution , bonding stability ;
( 4 ) , the deformation force in the cohesive failure does not occur ;
( 5 ) , at the temperature without excessive permanent deformation , without softening or sticky , security seals no excessive hardening and embrittlement occur ;
( 6 ) , under conditions of use anti-aging , weather-resistant , long service life and reasonable ;
( 7 ) , the displacement ability to meet the requirements ;
( 8 ) , structural bonding displacement capacity ( % ) and modulus strength rational unity.
Third, building sealing glue factors
( 1 ) , the sun UV radiation aging ;
( 2 ) , oxygen, and ozone oxidation ;
( 3 ), water and steam aging ;
( 4 ) , the environment temperature change ;
( 5 ) , wind load, shear force ;
( 6 ) , the loop mechanical ( compression / tension ) load ;
( 7 ) , invasive of air pollution , such as: acid rain, salt spray , etc. ;
( 8 ) , microbes and large organisms , such as fungi .