Sinomer® GMA (Glycidyl Methacrylate) is a dual-functional monomer containing both a polymerizable double bond and a reactive epoxy group. Its unique molecular structure makes it a core raw material in polymer modification, efficiently introducing reactive groups to significantly improve surface properties, compatibility, mechanical performance, and processability of polymers.
| Function | Description |
|---|---|
| High Reactivity | The double bond and epoxy group offer extremely high reactivity, enabling chemical bonding with various active hydrogen-containing polymers or compounds. |
| Functional Carrier | As a functional monomer, it easily introduces epoxy groups to produce polymers or composites with specific functions. |
| Broad Applications | Its unique chemical structure allows modification of engineering plastics, serves as an alloy compatibilizer, and plays an indispensable role in multiple fields. |
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Polyolefin materials such as PE and PP have extremely low surface energy and lack polar groups, leading to:
Low surface energy – Poor coating adhesion, affecting aesthetics.
Poor adhesion – Conventional adhesives fail to bond effectively, hindering composite preparation.
Difficult printing – High-quality printing on films is not achievable, limiting brand display and market appeal.
Difficult compounding – Weak interfacial bonding when blended with polar materials (e.g., nylon, glass fiber), leading to delamination and reduced performance.
Through free-radical polymerization, GMA is grafted onto polyolefin chains (e.g., PE, PP, EVA), introducing polar groups. The grafted material exhibits increased surface polarity and improved wettability, greatly enhancing adhesion for inks, coatings, and adhesives.
Applicable product series:
Sinomer® GMA can be used to prepare GMA-g-PE, GMA-g-PP, GMA-g-EVA, etc., targeting different substrate issues.
| Application Area | Description |
|---|---|
| Cable compounds | GMA-g-PE improves printability and adhesion to sheathing materials for cable insulation. |
| Automotive bumpers | GMA-g-PP is a preferred compatibilizer for PP/glass fiber composites, widely used in automotive interior and exterior parts. |
| Hot melt adhesives | GMA-g-EVA significantly enhances adhesion of hot melt adhesives to difficult substrates such as metal and wood. |
Many engineering plastics (PC, PET, PA, etc.) face the following “temperament” issues:
Insufficient toughness – Poor impact resistance at low temperatures or under high impact.
Water absorption deformation – Nylon (PA) absorbs water, leading to dimensional instability and reduced mechanical properties.
Poor interfacial compatibility – Clear interfaces and easy delamination when blending different components.
Weak coating adhesion – Poor bonding between substrate and coating during plating or special coating processes.
| Role | Mechanism |
|---|---|
| Toughening | GMA copolymers act as toughening agents; epoxy groups chemically crosslink with the matrix resin to absorb impact energy. |
| Compatibilizer | GMA graft copolymers (e.g., GMA-g-PA, GMA-g-PC) act as “molecular bridges,” enhancing interaction between polar and non-polar materials. |
| Mechanical property enhancement | Maintains rigidity while significantly improving toughness, elongation at break, and impact strength. |
| Processability improvement | Reduces melt viscosity, improves flow, and makes processing smoother. |
| Project | Description |
|---|---|
| Nylon modification | GMA-g-PA effectively solves water absorption issues and enhances interfacial bonding with glass fiber and other resins. |
| PET/PC modification | GMA-g-PET and GMA-g-PC serve as compatibilizers for recycling or compounding, improving material performance. |
| ABS electroplating | GMA-g-ABS greatly enhances adhesion of electroplated layers, preventing peeling. |
| Polymer alloys | Promotes the formation of high-performance alloys (e.g., PC/ABS), expanding application fields. |
High-end specialty polymers (PEEK, PVDF, PPO, POM, etc.) face unique challenges:
Difficult processing – High melting point, high viscosity, narrow processing window, demanding equipment and processes.
Poor interfacial bonding – Weak interlaminar adhesion in composites, prone to delamination, affecting reliability.
High cost – Expensive materials; any performance defect may cause significant economic loss.
Stringent performance requirements – Demanding heat resistance and mechanical properties for aerospace and other high-end applications.
| Pain Point | GMA Solution |
|---|---|
| Delamination | Develop specialty compatibilizers like GMA-g-PEEK to chemically enhance interlaminar bonding in composites. |
| Heat resistance improvement | Graft GMA onto high-temperature resins (e.g., GMA-g-PAES) to maintain heat resistance while improving processability. |
| Expanding application fields | Enable specialty polymers to better compound with other materials, meeting demands in emerging fields such as new energy and precision electronics. |
| Specialty Material | Application Description |
|---|---|
| PEEK | GMA-g-PEEK solves interlaminar bonding issues in PEEK-based composites for aerospace structural components. |
| PVDF | GMA-g-PVDF is used in lithium-ion battery separator coatings to enhance adhesion between separator and electrode. |
| PPO | Improves processability and compatibility with other materials, expanding applications in electronics and electrical appliances. |
| POM | Enhances toughness and weatherability, suitable for high-wear, long-life precision gears. |
High purity, low impurities – Suitable for high-end modification systems requiring strict optical and electrical performance.
Stable supply – Industrial-scale production ensures batch-to-batch consistency.
Technical support – Grafting process optimization, formulation design advice, and application troubleshooting.
For sample requests, detailed technical data sheets (TDS), or to discuss specific modification solutions, please feel free to contact us.
Sinocure Chemical Group
Email: info@sinocurechem.com
Tel: +86 15668330235
