Polysulfide sealant building is a two-component waterproof construction joint caulking paste body

Polysulfide sealant building is a construction joint caulking waterproof two-component pasty body generic name: polysulfide sealant, PS construction sealant, two-component polysulfide sealant (paste), elastomeric sealant Product Description polysulfide sealant construction is under liquid polysulfide rubber as the base material can be prepared from the normal self-curing two-component sealant crosslinking (A component: B component = 10: 0.8 to 1.2), the metal and concrete and other materials have good adhesion, continuous stretch, to maintain good air tightness and water resistance vibration and temperature changes, and oil resistance, solvent resistance, durability is very good. It is suitable for metal, concrete curtain wall joints, underground works (such as tunnels, culverts), reservoirs, reservoirs and other structures impermeable seal, and road surfaces, runways and other joints of the telescopic sealing, repair cracks in the building's restoration seal. Categories a, according to liquidity divided into non-sagging type (N) and self-leveling (L) two types; b, according to the lifting capacity can be divided into two levels 25,20; c, according to the tensile modulus can be divided into high modulus (HM) and low modulus (LM) polysulfide sealant building construction methods: 1, steel brush or brush carefully clean the adhesive surface, so that no dust, no attachments, and wipe with acetone degreasing, to ensure clean and dry surface to be dried. 2, with a slightly wider than the seam of polyethylene sealing plate filling seams, slit width adjustment slab depth of about 50%. 3, the two-component sealant ratio in accordance with product instructions, mix, pay attention as much as possible based on the actual amount of configuration, to avoid wastage. 4, the sealant into the mix of the barrel, with a squeeze instrument is pressed into the gap, and the sealant with a spatula to wipe smooth compaction, to ensure uniform and smooth. Packing: small package of 25 kg / box, A, B Package (6 barrel, wherein: A group of five barrels, group B 5 bags for the barrel); Bulk of 25 kg / barrel, A, B package. Physical performance polysulfide sealant building performance standards: JC / T483-2006 No. Item Specifications 20HM 25LM 20LM 1 density, g / cm3 predetermined value ± 0.1 2 liquidity sag (N-type) mm ≤3 leveling (L type) smooth 3 Dry time, h ≤24 4 trial period, h ≥2 5 elastic recovery rate,% ≥70 6 Tensile Modulus, MPa 23 ℃> 0.4 or> 0.6 ≤0.4 or ≤0.6 -20 ℃ 7 Modulus cohesiveness after 8 immersion in water no damage no damage 9 tensile properties of cold-drawn - No damage after pressing the adhesive 10 mass loss rate,% ≤5 Note: the trial period allows the use of other indicators agreed by both supply and demand values .