Functional Filler (Glass Bubbles)

Overview
Glass bubbles are ultra-lightweight, hollow spherical particles made from soda-lime borosilicate glass. They are used as functional fillers to reduce weight, improve thermal insulation, and enhance dimensional stability in various materials. Their unique hollow structure provides high strength-to-weight ratio and contributes to cost savings by reducing resin consumption.

Key Properties

• Extremely low density with high compressive strength

• Excellent thermal insulation and reduced thermal conductivity

• Chemical resistance and stability in harsh environments

• Improves dimensional stability and reduces shrinkage in composites

• Enhances flowability and reduces viscosity in processing

Examples of the Item

• Hollow glass microspheres (various grades and densities)

• Surface-treated glass bubbles for resin compatibility

• High-strength glass bubbles for structural applications

Applications

• Plastics & Composites: lightweight automotive parts, electronic housings, construction panels

• Paints & Coatings: reduced density, improved thermal barrier, smoother surface finish

• Adhesives & Sealants: reduced shrinkage, enhanced stability

• Energy & Oilfield: insulation in drilling fluids and cementing systems

• Aerospace & Marine: lightweight structural materials, buoyancy applications

Supply Options

• Grades: General purpose, high-strength, low-density, surface-treated

• Forms: Powder (microspheres), treated fillers for resins

• Compliance: RoHS, REACH, industry-specific standards

Note: Selection depends on required strength, density, and processing conditions.