Kayabrid｜Advanced MAPP Resin for Improving Fiber Adhesion in Polyolefin Composites

Kayabrid is a high-performance MAPP (Maleic Anhydride Grafted Polypropylene) resin designed to improve interfacial adhesion between non-polar polyolefins and polar fibers such as glass, carbon, or cellulose. Its unique combination of high graft ratio and high molecular weight offers significant mechanical reinforcement and impact resistance for composite materials.
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1. Industry Challenge
Polypropylene (PP) and other polyolefins inherently lack polar groups, resulting in poor adhesion with glass fibers or natural fillers, leading to interfacial delamination or mechanical failure.
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2. What is Kayabrid?
Kayabrid is an MAPP resin developed to address interfacial adhesion issues. It features:
- High graft ratio (2–3%)
- Molecular weight 3x higher than standard grades
- Japanese-grade stability and processing performance
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3. Key Benefits
| Feature | Benefit |
| High Graft Ratio | Chemical bonding with fibers |
| High Molecular Weight | Enhanced toughness and impact strength |
| Excellent dispersion | Ideal for CNF and WPC systems |
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4. Proven Applications
- GFRPP and CFRPP: Improved fiber-matrix interface
- CNF composites: Stable dispersion and bonding
- WPC: Enhanced flexural modulus and shock resistance
- Multi-layer films and Eco Cables: Improved layer adhesion
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5. Backed by Technical Testing
Studies from Shizuoka University show that Kayabrid (e.g., 003PP-NW) significantly increases interfacial shear strength and improves fracture characteristics in SEM analysis, shifting from interfacial to matrix failure.
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6. Summary
Kayabrid provides a reliable solution for composite manufacturers seeking to enhance adhesion, mechanical strength, and material durability. Nissei International (Thailand) Co., Ltd. supports its application with technical knowledge and proven product performance.
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