SBR Latex (Styrene-Butadiene Rubber Latex) is a synthetic rubber emulsion that is widely used in various industries due to its excellent mechanical properties, flexibility, water resistance, and cost-effectiveness.
Here's a comprehensive overview:
🔬 Chemical Composition
Main components: Styrene and butadiene (typically in a 23:77 ratio)
Form: A milky-white liquid emulsion (water-based)
Chemical formula: (C₈H₈·C₄H₆)ₙ (copolymer of styrene and butadiene)
⚙️ Key Properties
Property Value / Description
Appearance Milky white liquid
pH 6.5–10.0 (varies with formulation)
Solid Content 45–55% typical
Viscosity 50–500 mPa·s
Particle Size ~100–300 nm
Glass Transition Temperature (Tg) ~ -50°C to -20°C
Film Forming Ability Excellent
Water Resistance Good to excellent
UV/Ozone Resistance Poor (needs additives for improvement)
🧪 Production Method
SBR latex is typically produced via emulsion polymerization, involving:
Monomers: Styrene and butadiene
Surfactants/Emulsifiers
Initiators: Organic peroxides or redox systems
Optional: Antioxidants, stabilizers
🏭 Applications
SBR latex is extremely versatile. Common uses include:
🏗 Construction
Cement and mortar modification (improves flexibility and water resistance)
Waterproof coatings
Bonding agents for tiles and repair mortars
🧤 Gloves & Textiles
Dipping for rubber gloves
Coating for non-woven fabrics
Carpet backing
📄 Paper Industry
Coating and sizing
Improves gloss, smoothness, and printability
🖌 Paints and Adhesives
Binder in latex paints
Adhesives for various substrates (especially pressure-sensitive types)
✅ Advantages
Cost-effective compared to natural latex or other synthetic rubbers
Excellent film-forming properties
Good mechanical strength and abrasion resistance
Emulsion form allows easy handling and application in water-based systems
⚠️ Limitations
Poor resistance to ozone, UV, and oxygen unless modified
Lower elasticity compared to natural rubber
Not suitable for high-heat or highly chemical-resistant applications without further formulation
📦 Storage & Handling
Store between 5°C and 30°C
Avoid freezing
Use stainless steel or plastic containers to avoid metal ion contamination
SBR Latex (Styrene-Butadiene Rubber Latex) Is A Synthetic Rubber Emulsion, Widely Used In Various Industrial And Construction Applications Due To Its Excellent Bonding, Flexibility, And Water Resistance Properties. Here's A Detailed Overview: 🔬 Chemical CompositionSBR Latex Is A Copolymer Of Styrene (C₈H₈) And Butadiene (C₄H₆). It's Produced Via Emulsion Polymerization, Resulting In A Milky-white, Water-based Liquid. ⚙️ PropertiesProperty Description Continue
SBR Latex (Styrene-Butadiene Rubber Latex) Is A Synthetic Rubber Emulsion That Is Widely Used In Various Industries Due To Its Excellent Adhesion, Flexibility, Abrasion Resistance, And Water Resistance. 🔹 Basic CompositionSBR Latex Is Made By The Emulsion Polymerization Of: Styrene (C₈H₈) – Provides Hardness And Strength Butadiene (C₄H₆) – Provides Flexibility And Toughness 🔹 Key PropertiesProperty DescriptionAppearance Milky Wh Continue