Description des produits
Glycidyl Methacrylate, or GMA for short, is a monomer having epoxy groups and double acrylate linkages. Due to their high reactivity, acrylate double bonds can self-polymerise and copolymerize with a variety of different monomers.
Epoxy groups can interact with hydroxyl, amino, carboxyl, or acid anhydrides to introduce additional functional groups and increase the usefulness of products. GMA is frequently employed as a reactive diluent for epoxy resins, a stabilizer for vinyl chloride, a modifier for rubber and resins, an ion exchange resin, and a binder for printing inks due to the unique nature of its molecular structure.
As a result, GMA is frequently used in the production of chemical fiber, paper, printing, and dyes, composite materials, UV-curable materials, coatings, adhesives, leather, and other products.
Free radical polymerization is a modification technique called “polymer graft modification” that adds polar or functional side groups to the polymer chain. The polymer has exceptionally high polarity or a unique functional group after graft modification, which may enhance the polymer’s adhesion and printability and be utilized as a compatibilizer, a toughener, and diverse functional materials.
W5D is a graft polymer containing glycidyl ester functional groups, olefin copolymer as a matrix material, high reactivity.W5D polyester compatibilizer is POE-based material by introducing strong polar reactive group GMA (glycidyl methacrylate), so that the material has high polarity and reactivity, which can be used for flame retardant, reinforcement, enhancement The modification of polyester materials such as toughness, filling, etc. can effectively improve the compatibility of composite materials and the dispersion of fillers, and improve product performance. It can also be used as a compatibilizer for ABS/PC, PBT/PC and other alloys. This compatibilizer has obvious advantages for PBT flame retardant and fiber addition.
Typical data of W5D in PBT plus fiber
| Physical property index | Unité | Méthode d'essai | 70%PBT+30%GF | 65%PBT+5%W5D+30%GF |
| Résistance à la traction | Mpa | D-638 | 120 | 100 |
| Résistance à la flexion | Mpa | D-790 | 170 | 160 |
| Lzod notched impact strength | J/M | D-256 | 90 | 120 |
From the above table, adding 5% W5D in the PBT fiber system can improve the notched impact strength and preserve other properties well. The results show that W5D has superior processability and high fluidity in the PBT fiber system can help the glass fiber to disperse better.
Typical data of W5D in flame retardant reinforcement of PBT
| Physical property index | unité | Méthode d'essai | 56%PBT+30%GF+14%FR | 52%PBT++41%4%WF5RD+30%GF |
| Résistance à la traction | Mpa | D-638 | 110 | 110 |
| Résistance à la flexion | Mpa | D-790 | 165 | 170 |
| Lzod notched impact strength | J/M | D-256 | 65 | 120 |
| Residual rate | % | / | 30.03 | 30.23 |
| 1/16 fire resistant | niveau | UL-94 | HB | V0 |
Note: PBT Taiwan Changchun 1100 -211 M GF Jushi 988A Antimony trioxide Brominated epoxy
It can be seen from the above table that the addition of 4% W5D in the PBT flame retardant reinforcement system can improve the notched impact strength and preserve other properties well. It shows that W5D has superior processing performance in PBT flame retardant reinforcement system and high fluidity can help glass fiber to disperse better.
Typical data of W5D in PC+PBT alloy
Test raw materials: PBT (Changchun 1100N), PC (Teijin 1250Y); Test equipment: 35 type twin-screw extruder granulator
| Performance | Unité | PC+25%PBT | PC+20%PBT+5%W5D |
| Résistance à la traction | MPa | Poor compatibility, layering | 55 |
| Résistance à la flexion | MPa | Poor compatibility, layering | 85 |
| Lzod notched impact strength | J/M | Poor compatibility, layering | 650 |
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Caractéristique
Ce produit est un polymère de propène avec de l'anhydride maléique fonctionnalisé, qui est particulièrement adapté au renforcement et à la compatibilité des fibres minérales PP et des fibres de verre.
Modification of polymer graft effects
Polymers may create a variety of novel effects with the addition of polar functional groups via graft modification; the primary sorts of effects are discussed here.
Effect of flame retardants
- Through grafting chemical process, flame-retardant elements or groups are added to the polymer’s main chain or side chain, transforming the polymer into an intrinsic flame-retardant resin. For instance, adding boron, silicon, sulfur, metal, etc. to the resin can increase its ability to resist flame.
- The compatibilizer’s functionTo increase the resin’s compatibility with other polymers, reactive functional groups are added by the chemical process of grafting. It serves as a polymer alloy compatibilizer. A common HDPE/PA compatibilizer is polyethylene grafted maleic anhydride.
- A toughening agent’s function
Although many elastomers have a good toughening effect, it is challenging to exert the required toughening impact due to their poor compatibility with the toughening matrix resin. This type of elastomer’s compatibility with the toughening matrix resin and toughening performance may both be significantly enhanced after graft modification treatment. If maleic anhydride is used for graft modification to create POE-g-MAH, it improves the compatibility with PA and becomes the best toughening agent for PA.Another illustration is the overall toughening impact of pure SEBS on PET and PBT, which is similarly due to the two materials’ poor compatibility. Glycidyl methacrylate (GMA) is a great toughening agent for PET and PBT when it is utilized for graft modification to create SEBS-g-GMA.
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Application
1. It can be used as compatibilizer for PBT, PC, PET and glass fiber.2. It can be used as toughening agent for PBT and PC.
3. Can be used as PBT / PC alloy compatibilizer;Industrie d'application1. Adhesives and Sealants: This graft polymer is a great option for creating adhesives and sealants because to its strong reactivity and outstanding adhesion capabilities. It is suitable for bonding a variety of substrates, such as metals, polymers, ceramics, and composites.2. Coatings and Paints: This product’s adaptability makes it excellent for coatings and paint formulation. It functions as a binder to promote durability, adhesion, and chemical resistance. A coating’s outstanding hardness and scratch resistance are produced by crosslinking processes made possible by the strong reactivity of the glycidyl ester functional groups.
3. Composites: The graft polymer can be employed in composite materials as a strengthening agent. Due to its high reactivity, it can create solid bonds with the matrix substance, improving the composites’ mechanical characteristics. Because of this, it may be used in fields including construction, aircraft, and the automobile industry.
4. Functional Materials: Due to the graft polymer’s distinct functionality, it may be used to create a variety of functional materials. Surfaces can be changed, compatibility between materials can be improved, or specialized qualities like conductivity, hydrophobicity, or biocompatibility can be added.
