ST5聚氨酯密封胶

ST5 polyurethane sealant for constructionST5 polyurethane sealant is single Component, low modulus and of strong elasticity. Its especially suitable for sealing jionts for the multi- porous materials.Uses*Sealing for joints of the outwall of precast aerated concrete .*Sealing for constrction jionts.Advantages*Excellent adhesion with former cleaned sealant. *Single Component, ready-to-use.*Excellent performance,easy to use.*High adhesion strengthwith all base materials.*Fast cure rate..*Light weight construction material.*Good weathering resistance and high durability.*No pollution*Can be painted.Instructions for use Surface preparationClean all dirty, dust, loose particles and paint.Jionts can be cleaned by compressed air. The filling material in the jionts must be polythene. PrimingUse specified primer on concrete and porous surface.Application*Stick protecting adhesive tape on both sides of the joints. *Insert filling materials. *Use the sealant with manual caulking gun or aerodynamic caulking gun. Horizontal seal can be finished by spatula. *Smooth with synthesized cleaner mixed by clean water if necessary. *Tear off the protecting adhesive tape befor the sealant is curing. *Clean all the tools after operating. The curing materials can be only cleaned by machinery methods. Technical Data (Typical) ST-5ColoursConcrete Gray,WhiteDensity1.30-1.40kg/LTack free time 45-120mins, depending on weatherCuring Rate≥2MM/24hHardness,Shore A15±5Modulus(100%Elongation)<0.2MPaTensile Strength≥0.6 MPaElastic Recovery>70% Elongation at break>800% Tearing Strength>5N/mm Application Temperature 5°C -40°CService Temperature -40°C-+80°C(maximum 50°C in hot water)Shelf life9 months stored dry below 30 unopened in original containers Packaging : 400ml or 600ml unipac per carton of 20.