ShinEtsu KBM-503 methacryloyloxysilane coupling agent for Composite Bonding
Basic Properties
ShinEtsu KBM-503 is a methacryloxy-functional silane coupling agent (C₁₀H₂₀O₅Si) with MW 248.4 g/mol, density 1.04 g/cm³, boiling point 255°C. Designed to enhance interfacial adhesion in resin composites (e.g., glass/carbon fiber to polymers).
Product Description
KBM-503 bridges inorganic/organic phases via hydrolyzable -OCH₃ and polymerizable methacryl groups. Low refractive index (1.429) suits transparent resin systems for high-end optical applications.
Characteristics
| Property | Value |
| Chemical Type | 3-Methacryloxypropyl trimethoxysilane |
| Molecular Weight | 248.4 g/mol |
| Specific Gravity | 1.04 |
| Refractive Index | 1.429 |
| Boiling Point | 255°C |
Application Scenarios
Aerospace Prepregs: Treats carbon fiber/epoxy interfaces in Boeing 787. Achieves >80 MPa interlaminar shear strength.
EV Battery Housings: Bonds SMC to polypropylene. Passes -40°C impact (50% peel strength increase), applied in Tesla 4680 packs.
5G Radomes: Optimizes glass fiber/cyanate ester interface. Maintains Dk=3.2±0.1 @10 GHz, meets Huawei radome specs.
Wind Blade Infusion: Enhances carbon fiber/epoxy wetting. Reduces porosity to <0.5%, implemented in Vestas V172 blades.
FAQ:
1. Who are we?
We are Shenzhen Huazhisheng New Material Technology Co., Ltd., a professional industrial adhesives and sealants supplier based in China since 2018. we serve global markets: Mainland China (60%), Southeast Asia (20%), North America (10%), and Europe (10%).
2. What products do you offer?
we supply high-performance adhesives and sealants from global leaders including:
Cemedine, Dow Corning, Shin-Etsu, Araldite, and Momentive,etc.
3. How do you guarantee product quality?
Quality assurance through:
Mandatory pre-production samples approval
Final inspection by QC team before shipment
International certifications: SGS, UL, FDA, RoHS, REACH
4. Why choose us over other suppliers?
Reliable Supply:Authentic products from top manufacturers
Expert Support:Technical guidance for product selection
Global Compliance:Certifications meeting target market standards
Efficient Service:Customized solutions & professional support
5. What services do you provide?
Delivery:EXW/FOB/CIF
Payment:USD/EUR/CNY/HKD via T/T, L/C
Support:Technical consultation & logistics coordination
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