3900 is a high-modulus silane modified polyether polymer developed for high strength bonding, industrial adhesives, and high-performance sealant formulations. Combining high transparency and fast curing characteristics, this polymer offers manufacturers an effective solution for applications requiring both appearance quality and mechanical performance.
Product Features
High transparency for visible applications
High activity and high modulus for structural performance
Reduced bubble formation during curing
Excellent adhesion strength and tensile elasticity
Superior resistance to water, yellowing, and long-term aging
Excellent chemical corrosion resistance
Compatible with other Risun polymers for customized formulations
Technical Specifications
Product Type
Silane Terminated Polyether
Appearance
Transparent
Modulus
High
Viscosity
8,000-12,000 mPa*s
Density
1.0 g/cm³
Shelf Life
≥12 Months
Curing System
Moisture Curing
Applications
Transportation industry sealants
Medium construction sealant
Eco-friendly decorative sealing products
Transparent encapsulate adhesive
Eco-friendly decoration sealant and adhesive
DIY adhesives
How It Works
3900 cures through a moisture-triggered silane reaction mechanism. When exposed to atmospheric moisture, the terminal silane groups hydrolyze to form silanol structures, which then crosslink to create a durable siloxane network. For detailed technical information, please contact our sales department.
Ideal Applications
Transportation industry sealants and adhesives
High modulus elastic sealants
Industrial bonding compounds
Strong adhesion across multiple substrates
Superior resistance to yellowing and water exposure
Recommended For
This product is particularly suitable for manufacturers seeking easier processing without compromising mechanical performance.
Frequently Asked Questions
What is the biggest advantage of 3900?
The combination of high modulus, high transparency, and relatively low viscosity allows manufacturers to achieve structural performance while maintaining excellent processability.
Is 3900 suitable for transparent adhesives?
Yes. High transparency is one of its key features, making it suitable for transparent adhesive and encapsulation applications.
How should the material be stored?
The product should be stored in sealed packaging under dry conditions between 4°C and 30°C to avoid moisture exposure and maintain optimal performance.