Monomer Selection for Water-Based and Oil-Based Resins

Water-Based Resins:

Characteristics:

• Environmentally friendly, low VOC emissions
• Easy to clean and use
• Requires stable water dispersion systems

Common Monomers:

① Acrylic Monomers:

Hydroxyethyl Methacrylate (HEMA): Increases hydrophilicity and adhesion properties.

Methyl Methacrylate (MMA): Enhances hardness and abrasion resistance.

Butyl Acrylate (BA): Improves flexibility and adhesion.

② Vinyl Monomers:

Vinyl Acetate (VAc): Used for enhancing elasticity and adhesion.

Vinyl Pyrrolidone (VP): Enhances water solubility and adhesion.

③ Styrene Monomers:

Styrene: Improves chemical resistance and gloss.

④ Cross-Linking Monomers:

Divinylbenzene (DVB): Adds hardness and heat resistance.

Ethylene Glycol Dimethacrylate (EGDMA): Provides cross-linking to enhance structural strength.

Oil-Based Resins:

Characteristics:

• High gloss, durability, and waterproof properties
• Excellent mechanical properties and chemical resistance
• Typically require solvents or oil-based media for dispersion and dissolution

Common Monomers:

① Unsaturated Polyester Resin Monomers:

Styrene: Commonly used as a reactive diluent, providing hardness and chemical stability.

Methyl Methacrylate (MMA): Increases transparency and abrasion resistance.

② Epoxy Resin Monomers:

Bisphenol A Epoxy Resin: Offers high strength and chemical resistance.

Bisphenol F Epoxy Resin: Used to improve toughness and heat resistance.

③ Alkyd Resin Monomers:

Phthalic Anhydride: Used to produce high gloss and durable coatings.

Trimethylolpropane: Provides cross-linking and enhances water resistance.

Selection Criteria:

• Application Requirements: Choose monomers based on the performance requirements of the final product. For instance, water-based coatings need good environmental properties and low VOC emissions, whereas industrial coatings might prioritize abrasion resistance and chemical stability.
• Chemical Compatibility: Monomers need to be compatible with other components to ensure smooth polymerization reactions and stable performance of the final product.
• Cost and Availability: Select cost-effective and readily available monomers to optimize production costs.