HN40 Hollow Glass Bubbles 80 MPa Compressive Strength Lightweight Filler for Injection Molding Thermoplastic Composites

HAINUO HN40 Hollow Glass Bubbles are advanced borosilicate glass microspheres engineered to deliver a balanced combination of high compressive strength and low density for demanding industrial applications. With a compressive strength rating of 80 MPa (12000 psi) and a bulk density range of 0.20 to 0.35 g/cm³, HN40 fills a critical performance gap between standard-grade hollow glass bubbles and ultra-high-strength variants. These microspheres are produced through a precisely controlled glass-forming process that yields thin-walled, uniformly spherical particles with exceptional mechanical integrity. The result is a lightweight filler material that withstands the high shear forces and elevated processing temperatures encountered in injection molding and thermoplastic compounding operations, making HN40 the preferred choice for automotive manufacturers seeking to reduce component weight without sacrificing structural performance.

• 80 MPa Compressive Strength: Engineered isostatic crush resistance ensures HN40 microspheres survive the extreme pressures of injection molding processes, maintaining their hollow structure and performance benefits throughout manufacturing.
• Optimized Density Profile: With bulk density between 0.20 and 0.35 g/cm³, HN40 achieves an ideal balance between weight reduction and mechanical reinforcement, enabling up to 25% weight savings in filled thermoplastic compounds.
• Thermal Processing Stability: The high softening point of 600°C and low thermal expansion characteristics allow HN40 to integrate seamlessly into high-temperature thermoplastic processing, including PP, PA, and PBT compounds.
• Excellent Chemical Resistance: Borosilicate glass composition provides inherent resistance to acids, alkalis, and organic solvents, ensuring long-term durability in chemically aggressive automotive environments such as under-hood components.
• Dimensional Stability: Low thermal expansion coefficient and isotropic spherical geometry minimize warpage and shrinkage in molded parts, improving dimensional accuracy and reducing post-processing requirements.
• Uniform Particle Distribution: Tight particle size control with D50 at 50 µm ensures consistent dispersion throughout the polymer matrix, eliminating localized weak points and delivering predictable mechanical properties across production batches.

HN40 Hollow Glass Bubbles are specifically formulated for automotive injection molding and thermoplastic compounding applications where both weight reduction and mechanical integrity are critical. In polypropylene (PP) and polyamide (PA) compounds, HN40 reduces part density by 15-25% while maintaining tensile and flexural properties within specification limits. Automotive interior components such as instrument panels, door trim, and center consoles benefit from the reduced weight without compromising impact resistance or surface finish quality. Under-hood applications including engine covers, air intake manifolds, and battery housings leverage the thermal stability and chemical resistance of HN40 to perform reliably in high-temperature, chemically exposed environments. Beyond automotive, HN40 also serves as an effective lightweight filler in industrial injection-molded components, consumer electronics housings, and sporting goods where weight reduction combined with structural performance delivers measurable product advantages.

HAINUO HN40 Hollow Glass Bubbles are packaged in moisture-resistant cartons or durable ton bags, with custom packaging options available upon request to meet specific logistics and handling requirements. Each production batch undergoes rigorous quality testing including particle size distribution analysis via laser diffraction, isostatic compressive strength measurement, true density verification using gas pycnometry, and moisture content analysis. Our ISO 9001 certified quality management system ensures consistent product performance and full traceability from raw material sourcing to finished product shipment. Standard delivery time is 7-15 working days with a monthly supply capacity of 5000 kg. Technical datasheets, safety documentation, and application guidance are provided with every shipment to support seamless integration into your manufacturing processes.