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AC-5540 Non-Hydrolysable Silicone Surfactant for Microcellular PU Foam
AC-5540 is a non-hydrolysable silicone surfactant specially developed for polyester-based microcellular integral-skin polyurethane foam formulations. It combines excellent cell stabilization with superior shear stability and high thermal stability, making it the premier choice for demanding microcellular foam applications.
Key Features & Advantages
Non-Hydrolysable Silicone Chemistry: Engineered with a stable molecular structure that resists hydrolysis, ensuring consistent performance even under challenging processing conditions with high moisture exposure.
Excellent Cell Stabilization: Acts as a potent cell stabilizer, significantly reducing surface porosity and delivering uniform cell structure throughout the foam matrix for improved mechanical properties.
Superior Surface Skin Formation: Specially optimized for integral-skin formulations, promoting the formation of a dense, durable outer skin while maintaining the desired microcellular core structure.
Outstanding Shear Stability: Provides exceptional shear stabilization during the mixing and molding process, ensuring consistent foam quality across production batches.
High Thermal Stability: Features a flash point of 104°C and reliable thermal properties, making it suitable for processes involving elevated temperatures without degradation.
Good Emulsification for All Raw Materials: Ensures homogeneous dispersion of all formulation components, promoting uniform reactivity and consistent foam properties.
Multi-Grade Product Line: AC-5540 is part of the EXCEEDCHEM silicone surfactant series, offering multiple viscosity grades (AC-3525, AC-5540) to match different polyester polyol systems and processing requirements.
Consistent Batch Quality: Manufactured under ISO 9001:2015 quality management with rigorous in-process control, ensuring reliable hydroxyl number (57 mg KOH/g) and viscosity (400-600 mPas) specifications batch after batch.
Technical Specifications
Parameter
Specification
Appearance
Clear liquid
Viscosity (@25°C)
400-600 mPas
Specific Gravity (25°C)
1.03
Flash Point (PMCC)
104°C
Freezing Point
0°C
Hydroxyl Number
57 mg KOH/g
Applications
Polyester-based microcellular polyurethane foam
Integral-skin PU foam products (shoe soles, automotive parts)
High-performance foam requiring superior shear stability
Available in 210KG/DRUM and 1000KG IBC. Store in a cool, dry environment at 10-35°C. Keep container tightly sealed to avoid moisture contamination. Non-hazardous chemical, transportable as general cargo.
Frequently Asked Questions
What is the difference between AC-5540 and AC-3525 silicone surfactants?
AC-5540 is a non-hydrolysable surfactant with higher viscosity (400-600 vs 100-250 mPas) specifically designed for microcellular integral-skin formulations, while AC-3525 is a universal NPEO-free stabilizer for general polyester PU foam. AC-5540 offers superior shear stability and surface skin formation, whereas AC-3525 excels in emulsification and cell opening performance.
What does non-hydrolysable mean and why is it important?
Non-hydrolysable means the silicone surfactant resists chemical breakdown when exposed to water or moisture during foam processing and throughout the product lifecycle. This ensures long-term performance stability, prevents premature foam degradation, and maintains consistent cell structure even in humid production environments or high-moisture formulations.
Is AC-5540 suitable for shoe sole manufacturing?
Yes, AC-5540 is particularly well-suited for polyester-based microcellular PU shoe sole production. Its excellent shear stability ensures consistent foam density and cell structure during high-shear mixing and injection molding. The integral skin formation capability also contributes to the desired surface quality and durability of finished shoe soles.
Can I get technical support for formulation optimization with AC-5540?
Absolutely. Our technical team provides comprehensive formulation support, including dosage optimization, compatibility testing with your specific polyester polyol and isocyanate system, and processing parameter recommendations. Free samples up to 1 KG are available for qualified customers — contact us with your formulation details to get started.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company
Year Established:
2013
Total Annual:
10000000-20000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Qingdao Exceed Fine Chemicals Co., Ltd is a high-tech enterprise that integrates manufacturing and trading. We specialize in the production of polyurethane-based products.
Our company is dedicated to investing in research and development of cutting-edge products, collaborating with leading Chines...
Qingdao Exceed Fine Chemicals Co., Ltd is a high-tech enterprise that integrates manufacturing and trading. We specialize in the production of polyurethane-based products.
Our company is dedicated to investing in research and development of cutting-edge products, collaborating with leading Chines...
