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3M™ Glass Bubbles D32/4500

3M Product Number D32/45003M ID 7100029836
  • Decreases weight, increases buoyancy and may lower material costs
  • Provides excellent water and oil resistance for use in underwater applications
  • Surface treated to improve properties of the composite
  • Improves dimensional stability
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Product Details

3M™ Glass Bubbles D32/4500 have a density of 0.32 g/cc and an isostatic crush strength of 4,500 psi. They have less than 1% sinkers (>1.0 g/cc density particles) by volume and are surface treated to be compatible with buoyancy module manufacturing. Like other 3M™ Glass Bubbles in our floated product series, this product is ideal for use in a number of aerospace and oil and gas applications.

A Great Product Rises to the Top 3M™ Glass Bubbles D32/4500 is part of the floated product series and has less than 1% sinkers by volume. This means that we get 80% floaters by volume using a universally held process to assure that you get perfectly formed 3M™ Glass Bubbles, not sinkers. Here’s how it works: we put a population of bubbles of a given specification into water and take only the ones that float to the top. This is the oldest, simplest and perhaps most reliable method to ensure bubbles are whole and intact, while improving the strength-to-density ratio. In short – we take only the cream of the crop and give you bubbles that are less dense at the same nominal strength. 3M™ Glass Bubbles Floated Series 3M glass bubbles in our floated series offer the same combination of strength and light weight as standard 3M glass bubbles, with an added surface treatment. D32/4500 glass bubbles have methacrylato chromic chloride surface treatment. This special coupling agent expands this product’s uses. It can be used in high-tech applications such as aerospace and hydrospace syntactic foam and radomes. Glass bubbles in the floated series are available in a variety of sizes and grades for various product and processing requirements. Strength-to-Weight RatioThe benefits don’t end there; although 3M glass bubbles D32/4500 have thin walls, they have good isostatic crush strength of 4,500 psi / 310 bar, meaning they can survive both the rigorous demands of processing and water pressure at depth. At 4,500 psi / 310 bar, D32/4500 bubbles have a targeted fractional survival rate of 90% for consistent performance and greater survivability. The unique spherical shape of these bubbles offers a number of important benefits, including: higher filler loading, lower viscosity/improved flow and reduced shrinkage and warpage. Adding to this product’s versatility is its ability to be easily blended into compounds, making it adaptable to a variety of production processes including spraying, casting and molding

  • Decreases weight, increases buoyancy and may lower material costs
  • Provides excellent water and oil resistance for use in underwater applications
  • Surface treated to improve properties of the composite
  • Improves dimensional stability
  • Thermal conductivity reduction
  • Temperature resistance
Specifications
Capabilities
Chemical Resistance, Lightweighting, Temperature Resistance
Color (unaided eye)
White, powdery
Composition
Soda-lime-borosilicate glass
Density (g/cc)
0.32
Density Range (g/cm3)
0.30 - 0.39
Industries
Paints and Coatings, Rubber and Plastic, Transportation
Particle Size (D50 Micron)
40
Particle Size Range (D50 Micron)
40 - 49, 40 - 49
Shape
Hollow spheres with thin walls
Sizes Available
Small Box (10 lb, 4.5 kg)
Strength (MPa)
31
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