3M™ Glass Bubbles D32/4500

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 Ratio
The benefits don’t end there; although 3M glass bubbles D32/4500 have thin walls, they have good isostatic crush strength of 4,500 psi, meaning they can survive both the rigorous demands of processing and water pressure at depth. D32/4500 bubbles have a fractional survival rate of 80% or more, at 4,500 psi 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