3M Glass Bubbles S38HS High-Strength Medium-Density Hollow Glass Microspheres for Marine Composites, Epoxy Potting & Structural Foam

Full Name & Product Positioning

Product Full Name: 3M S38HS High-Strength Medium-Density Pressure-Resistant Hollow Glass Microspheres

Developed for high-pressure casting, epoxy potting, and marine composite materials, balancing density with compressive stability, suitable for high-load industrial composite systems.

Core Technical Parameters

· True Density: 0.38 g/cm³

· Compressive Strength: 8000 psi

· Physical Form: White high-purity powder

· Standard Packaging: Industrial bulk packaging

· Material: Ultra-high-strength hollow borosilicate glass

· Core Characteristics: High compressive strength, high-pressure resistant, structurally stable, suitable for heavy-load composites

Key Advantages

· Good compressive performance, can withstand high-pressure potting and compression molding conditions, maintaining a high microsphere integrity rate.

· Medium-density ratio achieves a good balance between product weight reduction and mechanical strength.

· Good waterproof, anti-corrosion, and weather resistance performance, suitable for harsh marine outdoor conditions.

· Good compatibility with epoxy systems, with fewer voids and delamination in potting products and uniform performance.

· Resistant to aging and deformation during long-term use, can extend the service life of industrial products.

Main Application Areas

Core Applications: Marine composite materials, epoxy high-pressure potting, high-strength structural foams

Suitable Areas: Outdoor heavy-load industrial coatings, high-pressure molded lightweight structural parts, anti-corrosion composites

Prohibited Scenarios: Ultra-high-shear injection molding processing, food-contact products, civilian low-load lightweight coatings