hit: 28492 ¡æ
contact usTEL: 86-15132836877
ADD: Hengshui City, Hebei Province, China
PolysulfideSealant ¨C Resistant to Various Water
Liquidpolysulfide rubber as the basic material, adding tackifying resin, vulcanizingagent, accelerant and fortifier makes up the polysulfide sealant (double/two-componentpolysulfide sealant). It is a kind of two-component sealant that can vulcanizeand crosslink by itself at room temperature. Its appearance is exquisite andeven paste or ropy liquid, so it is also called two-component polysulfidesealing paste. It is made up of A component and B component. A component ishoary even paste and B component is black even paste. The two components haveclear color difference, which makes the mixing more convenient. The mixingratio is A : B=100 : 8 - 12. It has good bonding effect to metal, concrete andother material. It can keep good air tightness and waterproof ability incontinuous vibration and temperature changes.
Separatepackages of A component and B component make the mixing better, because theycan be mixed according to correct ratio.
Classificationof polysulfide sealant
Thecaulking gun makes thesealant easier to use.
1.Itcan be divided into two kinds according to the flowability: non-slumping andself-leveling.
2.Itcan be divided into two kinds according to the movement ability: 25 and 20.
3.Itcan be divided into two kinds according to the tensile modulus: high modulus(HM) and low modulus (LM).
Featuresof polysulfide sealant
1.Excellentadhesion performance: it has good bonding effect to cement, steel, glass, woodand natural stone.
2.Resistantto water: it is stable facing sea water, tap water and distilled water.
3.Itis not resistant to concentrated acid and alkali. But it is stable facing thediluent inorganic acid, alkali and various salts.
4.Excellentanti-aging and resistance to high temperature. It can work in the temperatureof -40¡ãC - +120¡ãC for long time.
6.Non-toxic,good air tightness and high elasticity. It has the best air tightness among allthe sealants.
Two-componentpolysulfide sealant technical data
Slump (N), mm
Elastic recovery rate
Tensile modulus (MPa)
Tensile bond in water
Cold /hot pressing adhesive
Mass loss rate
Our HengshuiJianfeng Engineering Rubber co., LTD. has large manufacturing workshop andadvanced equipment, so we can guarantee the quality of our products. And ourproducts are all tested before they are delivered to our customers.
Advancedequipment is the precondition of high uality.
Wedo tensile strength test to confirm that two-component polysulfide sealant iseligible.
Applicationof polysulfide sealant
1.Itis widely used in sealing expansion joints and settlement joints of buildings,subway, tunnel, airfield runway, expressway and bridge.
2.Itis also used in sealing various expansion joints of waterworks, swimming pool,impounding reservoir, power station, retaining dam, sewage treatment projectand water supply and drainage system.
Two-componentpolysulfide sealant can be used in subway, making the subway solid.
Themixed sealant should be used up within 2 hours, because it cures graduallywhich makes the construction hard.
1.Cleanthe bonding surface to keep it dry and clean.
2.Paintedthe primer on the surface before construction. Glue protective adhesion tape onthe two sides of the joints after the surface is dry to avoid the needlesssealant pollute the surface.
3.MixA component and B component fully until no color difference. B component shouldbe more in winter and less in summer than normal because of the climatedifference. You should have a try before using.
4.Squeezethe mixed polysulfide sealant into the joints with lime knife or caulking gununtil the joints being full. Then make the sealant smooth with lime knife.
5.Takeoff the protective adhesion tape after the construction finished and avoid tomake the surface be exposed to rain within 24 hours.