Wholesale ISO/CNAS/SGS Approved Silane Modified Sealant with High Strength

• Customization: Available
• Bonding Function: Adhesive Joint Sealing
• Morphology: Uniform Paste
• Model NO.: Surtek 3921
• Application: Automobile, Construction, Woodworking
• Material: Polyurethane
• Classification: Room Curing
• Main Agent Composition: Polyurethane Prepolymer
• Characteristic: Waterproofing
• Promoter Composition: Complexing Agent
• Composition: Organic Material
• Color: Black White Grey
• Density: 1.5±0.05 Kg/L
• Cure Mechanism: Moisture-Curing
• Tack-Free Time (23 ºC, 50% Rh): ~25 Min
• Rate of Cure (23 ºC, 50% Rh): ~ 2.5 mm/24hrs
• Non-Sag Properties: Good
• Tensile Strength: ≥ 1.8 N/mm^2
• Elongation at Break: ~ 300%
• Application Temperature: 5-40ºC
• Shore a Hardness: ~ 45±5
• Advantage: Solvent Free
• Origen: China
• Ventajas: Sin Dissolvetes
• Densidad: 1.5
• Tiempo De Aplicacion: 25 Minutos
• Transport Package: 310ml Cartridge 600ml Sausage
• Specification: ISO9001/TS16949
• Trademark: Surtek
• Origin: China
• HS Code: 3506100090
• Production Capacity: 72000000PCS/Year

Product Description

DESCRIPTION
Surtek 3921 is a one-component elastic bonding adhesive based on silane-modified polymer. It combines the advantages of both polyurethane and silicone, is a new generation elastic adhesive. Surtek 3921 is free of silicone, isocyanate and solvent. It cures quickly to form durable elastomer when in contact with moisture at ambient temperature.
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ADVANTAGES
One component, non sag, easy to apply
Good elasticity
Good heat and UV resistance
Environmental friendly

USES
Surtek 3921 can be used for the elastic bonding and joint sealing for metal, wood and plastic. It is widely used at bus body, railway carriage, container, equipment engineering, air-conditioning and ventilation, ship building industries and construction joint sealing, etc.


TECHNIACAL DATA SHEET OF SURTEK 3921

Appearance	Uniform Paste
Color	Black/White Grey
Density	1.50 ± 0.05 kg/L
Tack-free time*	~25 min
Rate of cure*	~3.5 mm per 24 hrs
Shore A hardness	45
Tensile strength	≥1.8 N/mm^2
Elongation at break	~300%
Application temperature (°C)	5-40ºC
Service temperature (continuous) Short exposure (up to 1 h)	-45°C to +90°C 120°C

ADHESIVE
Surtek 3921 has good adhesion on metal (fresh, parkerized, galvanized, painted), stainless steel, copper, aluminum panels (fresh, anodized, painted), glass, PC, PUR, ABS, polyester, most thermal plastics, EPDM, PS,PA, PVC, etc.. But prior test is absolutely necessary. For some substrates, the use of activator and/or primer will help to achieve optimal adhesion.


PROCESS
Cleaning:
Clean surface to ensure the surface being clean, dry, free of oil, grease, and of sound quality.
Application of sealant:
Cut tip to desired shape and size. Puncture airtight seal. Install with hand or power operated gun
and extrude the sealant into the joint. Clean excess sealant using hard rubber plate or finger wet
with soap solution.

PACKAGE
310ml cartridge, 20 cartridges per carton
400ml, 600ml sausage, 20 sausages per carton

STORAGE AND SHELF LIFE
Store in a cool and dry place (10~25 °C recommended). Avoid damage to the package. When stored at the recommended conditions in original, unopened containers, this product shelf life is 9 month (cartridge), 6 month (sausage).