Understanding Hollow Glass Microsphere TDS Data
How Engineers Interpret Technical Data Beyond the Numbers
A TDS is not just a product sheet. For Hollow Glass Microspheres, it is a processing compatibility document that helps engineers judge whether true density, D50 particle size, compressive strength, thermal conductivity, floating rate and application recommendations can fit real production conditions.
The real value of a Hollow Glass Microspheres TDS is not comparing which number looks better. Its value is helping you predict whether a grade can survive your process, keep the target density, maintain stable dispersion, and support mass production.
Quick Summary
What Is a Hollow Glass Microspheres TDS?
For engineers, a TDS is a technical document used to forecast whether a material can enter production smoothly. It helps connect paper parameters with real manufacturing behavior.
A typical Hollow Glass Microspheres TDS includes product identification, certification and compliance standards, main chemical composition, technical parameters, application recommendations, packaging specifications, storage guidance, available compliance documents, FAQ and quality statement. The updated TDS files cover HGM15, HGM20, HGM22HS, HGM25, HGM50, HGM60 and HGM60HS.
1. True Density: Starting Point of Lightweighting
True density is usually the first parameter engineers compare because it directly affects theoretical weight reduction. In the updated TDS group, available true density values range from 0.15 g/cm³ to 0.60 g/cm³.
| Grade Group | Typical Density Direction | Engineering Meaning |
|---|---|---|
| HGM15 / HGM20 / HGM22HS / HGM25 | 0.15–0.25 g/cm³ | Lower-density options for coatings, adhesives, building materials, oil extraction and selected low-density filling systems. |
| HGM50 | 0.50 g/cm³ | Higher-density industrial option for rubber, elastomers, building materials and stronger formulation systems. |
| HGM60 / HGM60HS | 0.60 g/cm³ | High-strength options where processing survival and pressure resistance are more important than the lowest possible density. |
Density alone cannot confirm the final lightweighting result. If the microspheres break during mixing, extrusion, injection molding or high-shear processing, the final density can rebound above the design target.
2. Compressive Strength: Focus on Processing Survival
Many purchasers assume higher compressive strength always means better performance. From an engineering perspective, compressive strength mainly tells you whether the microspheres can survive production stress.
In the updated TDS group, compressive strength values range from 500 psi for HGM15 to 18000 psi for HGM60HS. This does not mean every project should choose the strongest grade. It means the grade should match the actual shear, pressure, mixing and processing environment.
| Application System | What Engineers Should Check | Why It Matters |
|---|---|---|
| Coatings and Adhesives | Mixing speed, viscosity response, coating surface quality and final density. | Lower-density grades may work if the process is not too harsh. |
| Oil Extraction and Cementing Systems | Pressure environment, slurry behavior, high temperature resistance and stability. | The material must support density reduction without damaging process reliability. |
| Plastics and Electronics | Shear, molding pressure, dielectric behavior, dimensional stability and bead retention. | Processing stress may exceed simple lab test assumptions. |
| Rubber, Elastomers and Transportation | Compounding stress, tear resistance, compression behavior and long-term stability. | Higher-strength grades may be needed when mechanical stress is higher. |
For a deeper strength discussion, continue to the Compressive Strength Guide.
3. D50 Particle Size: Not Only Surface Finish
D50 particle size is often treated as a surface appearance parameter, but it also affects dispersion efficiency, sedimentation, slurry viscosity, breakage probability, and the full processing window.
Larger D50 Direction
Grades such as HGM15 with larger D50 may support low-density filling and stronger volume effect, but surface finish and thin-layer applications should be checked carefully.
Smaller D50 Direction
Grades such as HGM60 and HGM60HS with smaller D50 may support smoother processing and high-strength systems, but density and cost should still be considered.
4. Thermal Conductivity: Raw Material Data Is Not Final Insulation Performance
The updated TDS files list thermal conductivity around 0.04–0.1 W/(m·k). However, engineers should not use raw microsphere thermal conductivity alone to calculate final insulation performance.
Final insulation depends on loading percentage, intact bead ratio, resin type, internal pore structure, dispersion uniformity, and processing damage. The same microsphere grade at different loading levels may produce very different insulation results.
5. pH, Floating Rate and Dielectric Constant: Small Parameters, Big Process Impact
Besides density, D50 and compressive strength, engineers should also review pH value, floating rate and dielectric constant. These parameters are especially useful when the material is used in coatings, adhesives, plastics, electronics, rubber systems and lightweight composite materials.
| Parameter | Typical TDS Direction | Why Engineers Check It |
|---|---|---|
| pH Value | 7–9 | Helps review compatibility with resin, coating, adhesive, slurry or elastomer systems. |
| Floating Rate | ＞99% | Reflects hollow sphere integrity and usable lightweight filler quality. |
| Dielectric Constant | 1.2–2 | Important for electronics, high-frequency systems and low-dielectric material direction. |
Updated TDS Grade Comparison
The table below is not a final product recommendation. It shows how engineers can use updated TDS data for first-round screening, then verify the selected grade through application survey and sample testing.
| Grade | True Density | D50 | Compressive Strength | Typical Direction | TDS PDF |
|---|---|---|---|---|---|
| HGM15 | 0.15 g/cm³ | 57 μm | 500 psi | Coatings, adhesives and building materials where low density and insulation are prioritized. | Download TDS |
| HGM20 | 0.20 g/cm³ | 43 μm | 750 psi | Coatings, adhesives, oil extraction and building material systems. | Download TDS |
| HGM22HS | 0.22 g/cm³ | 35 μm | 1200 psi | Adhesives, plastics and electronics where process stability and low dielectric behavior are considered. | Download TDS |
| HGM25 | 0.25 g/cm³ | 43 μm | 1000 psi | Coatings, adhesives, oil extraction and building materials with balanced low-density demand. | Download TDS |
| HGM50 | 0.50 g/cm³ | 32 μm | 8000 psi | Rubber, elastomers, building materials and stronger industrial formulation systems. | Download TDS |
| HGM60 | 0.60 g/cm³ | 23 μm | 16000 psi | Rubber, elastomers, building materials and high-strength industrial formulation review. | Download TDS |
| HGM60HS | 0.60 g/cm³ | 23 μm | 18000 psi | Plastics, electronics, transportation and high-shear processing environments. | Download TDS |
Available TDS Downloads
Use these PDF files for technical review, preliminary grade screening, and supplier qualification. Final selection should still be confirmed by sample testing and real processing conditions.
Reading TDS Like an Engineer
Do not judge a TDS by whether the numbers look high or low. Judge whether the numbers can match your production conditions. The checklist below is the practical way to read an HGM TDS.
| Parameter | Engineer’s Checkpoint | Related Resource |
|---|---|---|
| True Density | Can it achieve the target weight reduction after real processing? | Density Selection Guide |
| Compressive Strength | Can it withstand actual shear, pressure, mixing, extrusion, or injection conditions? | Compressive Strength Guide |
| D50 Particle Size | Will it affect surface finish, viscosity, dispersion, sedimentation or processing stability? | Engineering Site Surveys and Guides |
| Thermal Conductivity | Can it support the insulation design after formulation and processing? | Buyer’s Guide |
| Application Direction | Does the grade match coatings, adhesives, oil extraction, plastics, electronics, rubber, transportation or building materials? | Material System |
Why Sample Testing Still Matters After Reading TDS
A complete TDS cannot replace real-world trials. Mixing equipment, injection machine model, back pressure, shear rate, resin grade, loading ratio, and production temperature can all change the final result.
| Stage | Recommended Action | Risk Reduced |
|---|---|---|
| Preliminary Screening | Use TDS data to narrow density, strength, D50, and application direction. | Reduces unsuitable grade selection. |
| Lab Trial | Run small formulation tests to check density, viscosity, dispersion, and surface behavior. | Reduces early formulation failure. |
| Pilot Production | Test the material under near-real equipment and process conditions. | Reduces scale-up failure. |
| Batch Procurement | Confirm approved grade, batch COA requirements, packaging, and supply rhythm. | Supports long-term production stability. |
Recommendation
The core value of a Hollow Glass Microspheres TDS is process matching, not parameter competition. For coatings, adhesives, oil extraction, plastics, electronics, rubber, transportation and building material systems, numbers do not create value alone.
Value appears when microspheres remain intact after processing, production lines run continuously, product performance remains stable, and the project can move from sample testing to mass production smoothly.
FAQ
What is a Hollow Glass Microspheres TDS used for?
A Hollow Glass Microspheres TDS is used to understand technical parameters such as true density, D50 particle size, compressive strength, thermal conductivity, floating rate, dielectric constant and application recommendations. Engineers use it to judge processing compatibility before sample testing and batch procurement.
Which HGM grades currently have TDS downloads on this page?
The current TDS page provides downloads for HGM15, HGM20, HGM22HS, HGM25, HGM50, HGM60 and HGM60HS.
Can I choose an HGM grade only by true density in the TDS?
No. True density is only the starting point for lightweighting. You should also review compressive strength, D50 particle size, processing shear, resin system, application direction and final density after real processing.
Why does compressive strength in a TDS matter?
Compressive strength helps predict whether microspheres can survive mixing, extrusion, injection molding, pressure service or other processing conditions. If microspheres break, the final density and performance may change.
Do I still need sample testing after reviewing the TDS?
Yes. A TDS cannot replace real processing trials. Sample testing and pilot production help verify density, viscosity, dispersion, bead survival, surface quality and long-term stability under actual production conditions.
Need Help Reading a TDS for Your Project?
Share your target density, resin system, processing method, shear condition, temperature range, application product, and sample requirement. Ocean Elite can help you interpret TDS data before unnecessary testing cost appears.
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