3M Glass Bubbles S32HS High-Strength Hollow Glass Microspheres for Automotive Composites, Spraying & Casting

Full Name & Product Positioning Full Product Name: 3M S32HS Medium-High Pressure High-Strength Hollow Glass Microspheres Core grade of S-HS series, designed for medium-high pressure and medium-shear working conditions. It adapts to automotive composite materials, structural foam and spray casting systems, solving the easy-breakage problem of ordinary microspheres during processing. Core Technical Parameters True Density: 0.32 g/cm³ Crush Strength: 6000 psi Physical Form: Uniform white powder Standard Packaging: Industrial bulk packaging Material: High-strength hollow borosilicate glass Core Characteristics: Medium-high density, high pressure resistance, medium shear resistance, low breakage rate Core Advantages 1. Greatly improved pressure resistance to withstand processing stress from spraying, casting and mild extrusion; 2. Stable microsphere structure with ultra-low breakage rate during processing for controllable and stable product performance; 3. Suitable for automotive lightweight composites and structural foam, reducing weight while ensuring structural strength; 4. Excellent heat insulation, shock absorption and sound insulation effects to improve comprehensive performance of industrial products; 5. Wide resin compatibility with epoxy, polyurethane and unsaturated resins fully applicable. Main Application Fields Core Applications: Automotive lightweight composite materials, industrial structural foam, spray casting products Compatible Fields: Marine lightweight auxiliary materials, industrial high-strength coatings, medium-pressure molded composites Prohibited Scenarios: Ultra-high shear injection molding, deep-sea ultra-high pressure working conditions, food-contact products