3M Glass Bubbles K1 Ultra-Low-Density Hollow Glass Microspheres for Low-Shear Coatings & Putty

Full Name & Product Positioning Product Full Name: 3M K1 Low-Density Hollow Borosilicate Glass Microspheres This is a low-density hollow glass microsphere grade, focused on lightweight filling effects. It is suitable for ambient-temperature systems with low shear, low pressure, and low processing stress. It can be used for filling modification of lightweight putties, buoyancy materials, and light-duty coatings. Core Technical Parameters ·   True Density: 0.12 g/cm³ ·   Compressive Strength: 250 psi ·   Physical Form: White ultra-fine fluffy powder ·   Standard Packaging: 95 kg/drum ·   Material: Hollow borosilicate glass ·   Core Characteristics: Lightweight, thermal insulation, shrinkage reduction, low oil absorption Key Advantages ·   Low density helps reduce the overall weight of finished products. ·   Fine and uniform powder results in relatively smooth product surfaces after filling, reducing particle defects. ·   Can reduce the shrinkage rate of coating and putty systems, helping to improve cracking and deformation of finished products. ·   Good thermal insulation and electrical insulation performance, can improve the thermal insulation effect of coatings and profiles. ·   Good chemical stability, acid and alkali resistance, corrosion resistance, suitable for most ambient-temperature low-shear systems. Main Application Areas Core Applications: Lightweight construction putties, low-density coatings, civilian buoyancy filling materials Suitable Areas: Light-duty sealants, thermal insulation coatings, lightweight modification of craft products Prohibited Scenarios: High-shear processing such as injection molding/extrusion, high-pressure molding systems, food-contact products, high-load industrial structural parts