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​

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