30um Expandable Polymer Microspheres 20–35um SY906 97%

SY906 30 μm Thermally Expandable Polymer Microspheres

SY906 is a thermally expandable polymer microsphere designed as a physical blowing agent for lightweight polymer processing.

The product has an average particle size of approximately 30 μm, a particle size range of 20–35 μm and a solid content above 97%.

SY906 starts expanding at 155–165°C and reaches maximum expansion at 200–210°C. It is suitable for medium- and high-temperature foaming processes.

SY906 Technical Specifications

How SY906 Expandable Microspheres Work

SY906 consists of a thermoplastic polymer shell containing an expandable core.

When heated, the polymer shell softens and the internal pressure increases. The microspheres expand into hollow microballoons and form fine closed cells inside the polymer matrix.

This controlled expansion increases material volume while reducing finished-product density.

Key Benefits of SY906

• Approximately 30 μm average particle size

• Controlled 20–35 μm size range

• High solid content above 97%

• Defined high-temperature expansion window

• Fine and uniform closed-cell structure

• Effective density and weight reduction

• Improved surface smoothness

• Reduced risk of large bubbles and pinholes

• Increased thickness and product volume

• Improved cushioning and flexibility

• Suitable for different polymer-processing methods

Lightweight Polymer Foaming

SY906 creates hollow microstructures within compatible polymer materials.

Depending on the formulation and process, it can help provide:

• Lower finished-product weight

• Reduced material consumption

• Increased product volume

• Improved thermal insulation

• Better cushioning

• Sound and vibration damping

• Controlled product density

Fine Closed-Cell Structure

Each SY906 microsphere expands into an individual hollow cell.

This structure can help reduce:

• Large foam cells

• Uneven expansion

• Surface pinholes

• Rough surfaces

• Irregular thickness

• Local density variation

SY906 is suitable for products requiring both lightweighting and good surface appearance.

Compatible Materials

SY906 can be evaluated in compatible polymer and elastomer systems, including:

• PVC

• EVA

• PE

• PP

• TPE

• TPR

• TPU

• EPDM

• Rubber compounds

• Adhesives

• Sealants

• Printing inks

• Coating systems

Compatibility depends on processing temperature, viscosity, formulation and required performance.

Main Applications

Thermoplastic Extrusion

SY906 can be evaluated in extrusion products such as:

• Plastic profiles

• Foam sheets

• Tubes and hoses

• Cable materials

• Sealing strips

• Synthetic wood

• Lightweight panels

It can help reduce density while maintaining a fine cell structure and smooth surface.

Injection-Molded Components

SY906 may be used in compatible injection-molding formulations for:

• Automotive interior parts

• Plastic housings

• Sealing components

• Gaskets

• Lightweight molded parts

• Functional polymer components

Shoe Soles and Footwear

SY906 can be evaluated in EVA, TPU, TPR and compatible rubber formulations.

Potential benefits include:

• Reduced shoe weight

• Improved cushioning

• Increased softness

• Controlled sole thickness

• Uniform foam cells

• Improved surface quality

Synthetic Leather

SY906 can create a lightweight foamed layer in synthetic leather and coated fabrics.

Potential advantages include:

• Increased thickness

• Reduced coating weight

• Improved softness

• Better flexibility

• Enhanced cushioning

• Smooth surface appearance

Foam Printing Inks

SY906 can be used in heat-activated printing formulations to create raised effects.

Typical applications include:

• Textile foam printing

• Wallpaper printing

• Raised graphics

• Decorative printing

• Braille printing

• Three-dimensional patterns

Coatings

SY906 can be evaluated as a lightweighting and texture-modifying additive in:

• Textile coatings

• Leather coatings

• Automotive coatings

• Paper coatings

• Industrial coatings

• Decorative coatings

Adhesives and Sealants

SY906 may reduce density and improve compressibility in compatible adhesive and sealant formulations.

Potential applications include:

• Automotive sealants

• Construction sealants

• Gap-filling adhesives

• Foam tapes

• Lightweight bonding layers

• Compressible sealing materials

Automotive Materials

SY906 can be evaluated in automotive products such as:

• Weather strips

• Glass run channels

• Interior trim

• Sealing profiles

• Gaskets

• Sound-damping components

Lightweight Composites

Other potential applications include:

• Lightweight putty

• Artificial stone

• Polymer clay

• Composite panels

• Construction materials

• Porous ceramics

• Decorative molded products

Recommended Processing Methods

SY906 can be evaluated in:

• Extrusion

• Injection molding

• Compression molding

• Calendering

• Coating

• Printing

• Casting

• Polymer compounding

Uniform dispersion before expansion is important for consistent foam quality.

Processing Temperature Guidance

SY906 starts expanding at approximately 155–165°C and reaches maximum expansion at approximately 200–210°C.

For stable processing:

• Keep premixing temperatures below the expansion range.

• Match the actual material temperature to the required expansion level.

• Avoid premature expansion during compounding.

• Control residence time at elevated temperatures.

• Avoid excessive shear after expansion begins.

• Prevent prolonged heating above the maximum expansion range.

• Confirm conditions through laboratory and pilot-scale trials.

Excessive temperature or heating time may damage the expanded shell and reduce the final foaming effect.

Factors Affecting Expansion Performance

The final result depends on:

• Base polymer

• SY906 dosage

• Actual material temperature

• Heating time

• Processing pressure

• Melt viscosity

• Mixing efficiency

• Product thickness

• Cooling conditions

Machine temperature settings may differ from the actual temperature experienced by the microspheres.

Recommended Addition Level

The optimum dosage should be determined according to:

• Target density

• Required expansion ratio

• Base material

• Product thickness

• Processing method

• Mechanical-property requirements

• Surface-quality requirements

Small-scale formulation testing is recommended before commercial production.

SY906 vs. Chemical Blowing Agents

SY906 may be evaluated alone or in combination with compatible chemical blowing agents.

Why Choose SHBC SY906?

• Defined 20–35 μm particle size range

• Approximately 30 μm average particle size

• High solid-content white powder

• Controlled high-temperature expansion

• Suitable for industrial formulation development

• Stable batch supply

• Sample evaluation support

• Custom packaging options

• Bulk production capability

• Technical communication for product selection

Storage and Handling

Store SY906 in its original sealed packaging in a cool, dry and well-ventilated place.

Keep the product away from:

• Direct sunlight

• Heat sources

• Open flames

• High humidity

• Excessive pressure

• Premature expansion temperatures

Avoid unnecessary friction and strong compression. Review the Safety Data Sheet before industrial use.

Frequently Asked Questions

What is SY906?

SY906 is a thermally expandable polymer microsphere used as a physical blowing agent and lightweight polymer additive.

What is the particle size of SY906?

The average particle size is approximately 30 μm, with a particle size range of 20–35 μm.

What is the solid content?

The solid content is greater than 97%.

What is the appearance of SY906?

SY906 is supplied as a white powder.

At what temperature does SY906 start expanding?

The expansion start temperature is approximately 155–165°C.

What is the maximum expansion temperature?

The maximum expansion temperature is approximately 200–210°C.

How does SY906 reduce product weight?

The microspheres expand into hollow microballoons, increasing material volume and reducing the density of compatible products.

What materials can be used with SY906?

SY906 can be evaluated in PVC, EVA, PE, PP, TPE, TPR, TPU, EPDM, rubber, coatings, adhesives and other compatible systems.

Can SY906 be used in extrusion?

Yes. It can be evaluated in profiles, sheets, hoses, cables, sealing strips and other extrusion applications.

Can SY906 be used for injection molding?

Yes. Temperature, pressure, dosage, residence time and mold conditions should be optimized through testing.

Can SY906 be combined with chemical blowing agents?

Yes. It may be used alone or together with compatible blowing agents to adjust density and cell structure.

Is application testing required?

Yes. Laboratory and pilot-scale testing are recommended because expansion performance depends on the formulation, equipment and processing conditions.

Request SY906 Samples

Contact Shanghai SanYu Biotechnology Co., Ltd. for SY906 samples, technical specifications, SDS information and bulk supply.

Please provide:

• Base material

• Final application

• Processing method

• Processing temperature

• Target density

• Required expansion level

• Current blowing agent

• Estimated purchase quantity