Two-Component Silicone Structural Glazing Sealant for Terracotta Curtain Walls

Two part silicone sealant specially designed for structural glazing. Basic UsesGUIBAO 992 Silicone Structural Glazing Sealant is designed forStructural bonding and glazing applications for glass curtain walls, aluminium curtain walls, terracotta curtain walls and metal structuresStructural secondary seal of insulating glassOther construction structural glazing applicationsFeaturesTwo parts , neutral cure to form an extremely tough elastomeric rubber ensuring a durable, flexible, and watertight bondNon-corrosive to metals, coated glass, low-E glass and many other substratesExcellent weatherability and high resistance to UV radiation ,heat and humidity, and ozoneExcellent stability through wide temperature range from -50 ºC to +150 ºCHigh level of mechanical propertiesGood compatibility with other neutral silicone sealantsColoursPart A (base) of GUIBAO 992 is available in white, part B (curing agent) in black; Black colour after mixing.PackagingGUIBAO 992 is available in kit: part A in 200L drums (net 190L) ,part B in 20L pails (net 19L).SpecificationsGUIBAO 992 is designed to meet or even exceed the requirements of Chinese national specification GB16776-2005 Silicone Sealant for Structural GlazingComplies with ASTM C 1184-2005Storage and Shelf LifeGUIBAO 992 should be stored in original unopened containers. It has a shelf life of 12 months from the date of manufacture.Typical PropertiesTest MethodPropertyUnitStandardResultGB/T 13477 (ISO 7390)Slumpmm≤30GB/T 13477 (ASTM D 2377)Tack free timeh≤100.8GB/T 13477Working time (after 20 min.)s≤102.2GB/T 531.1 (ISO 7619)HardnessShore A20-6043GB 16776 (ASTM C792)Heating aging    Weight loss%≤103.5 Chalking  NilNil Cracking NilNilGB/T 13477 (ISO 8339)Tensile strengthMPa   23ºC ≥0.601.13 90ºC ≥0.451.02 -30ºC ≥0.451.3 Water immersion ≥0.451.01 Water-UV exposure ≥0.451.09 Adhesion failure%≤5.000 Elongation at ultimate tensile strength at 23ºC%≥100140GB: Chinese National Standard ASTM: American Society for Testing and Materials ISO: International Standardization OrganizationSurface PreparationClean all joints removing all foreign matter and contaminants such as oil, grease, dust, water, frost, old sealants, surface dirt, or glazing compounds and protective coatings.Mixing and DispensingTo obtain the optimal performance of GUIBAO 992, it is recommended that base and curing agent thoroughly mixed using an airless two-part silicone dispensing machine.GUIBAO 992 should be mixed at a ratio of 9:1~11:1 base to curing agent by volume or 11:1~13:1 base to curing agent by weight.PrimingPriming is not usually required when using GUIBAO 992. But it is essential that adhesion is tested prior to use to decide whether to use primer or not.Masking and ToolingAreas adjacent to joint may be masked to ensure a neat sealant line. Do not allow mask tape to touch clean surfaces to which the silicone sealant is to adhere. Tooling should be completed in one continuous stroke after sealant application. Masking tape should be removed immediately after tooling.Equipment CleaningWhen not being used, it is recommended that the dispensing equipment be purged either with the base component or flush with suitable solvent.Limitations GUIBAO 992 should not be applied: To the materials that bleed oils , plasticizers or solvents, such as impregnated wood, oil-based caulksIn totally confined spaces as sealant requires atmospheric moisture for cure To frost laden or damp surfaces For continuous water immersion When surface temperature below 4ºC or over 50ºCSafety Information GUIBAO 992 is a chemical product, not edible, no implantation into body and should be kept away from children.Cured silicone rubber can be handled without any risk to health.Should uncured silicone sealant contact with eyes, rinse thoroughly with water and seek medical treatment if irritation persists.Avoid prolonged exposure of skin to uncured silicone sealant. Good ventilation needed for work and cure places. Disclaimer The information presented herein is offered in good faith and is believed to be accurate. However, because conditions and methods of using our products are beyond our control, this information should not be used in substitution for customer's tests to ensure that our products are safe, effective, and fully satisfactory for intended specific applications. About Us/* January 22, 2024 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1