1000um Spacer PMMA Microspheres PAPMMA1000UM 10%

1000um Spacer PMMA Microspheres PAPMMA1000UM

SHBC PAPMMA1000UM are 1000 μm, or 1 mm, PMMA microspheres designed for large-gap control, adhesive bond-line thickness control and industrial component spacing.

The spherical polymer particles provide physical support between assembled surfaces. They can be evaluated in adhesives, sealants, electronic modules, optical assemblies, industrial components and resin systems.

Product Specifications

Batch-specific particle size, size distribution, supply form, packaging and storage conditions are available in the product specification and Certificate of Analysis.

Key Advantages

Controlled 1 mm Spacing

The nominal particle diameter helps maintain an approximately 1 mm separation between bonded surfaces and assembled components.

Uniform Spherical Structure

Spherical particles provide stable support points and help reduce local bond-line variation.

Controlled Particle Sizing

Consistent particle sizing supports repeatable large-gap control and assembly performance.

PMMA Polymer Material

PMMA provides a polymer-based alternative to rigid glass, ceramic or metal spacer materials.

Smooth Particle Surface

The smooth morphology supports distribution in compatible adhesives, sealants, coatings and resin systems.

Custom and Bulk Supply

SHBC supports sample evaluation, customized specifications, pilot orders and industrial production.

Main Applications

Large-Gap Adhesive Bonding

PAPMMA1000UM can be added to compatible adhesives or sealants to help maintain an approximately 1 mm bond line.

Electronic Module Assembly

Suitable for controlling spacing between circuit boards, substrates, housings and supporting components.

Sensor and Enclosure Bonding

Can be evaluated in sensor housings, control units and electronic enclosures requiring a defined adhesive gap.

Optical Component Assembly

Suitable for large-gap spacing between optical housings, glass substrates, filters and imaging components.

Industrial Component Bonding

Can be used in mechanical components, fixtures and industrial assemblies requiring repeatable separation.

Resin and Coating Thickness Control

Suitable as a physical spacer in compatible resins, coatings and composite material systems.

Prototype and Test Assemblies

Can be evaluated in laboratory fixtures, material testing and product-development projects.

How 1000um PMMA Spacer Microspheres Work

PAPMMA1000UM microspheres are distributed in an adhesive, sealant, coating or compatible carrier.

During assembly, the particles form support points between two surfaces. Their nominal diameter helps limit compression and maintain the required separation.

Final gap thickness may also depend on:

• Mean particle diameter

• Maximum particle diameter

• Particle size distribution

• Particle loading

• Adhesive viscosity

• Assembly pressure

• Substrate flatness

• Particle deformation

Product Benefits

PAPMMA1000UM helps provide:

• Controlled 1 mm spacing

• More uniform bond-line thickness

• Stable support-point distribution

• Reduced local gap variation

• Improved component alignment

• Repeatable assembly processes

• Customized particle specifications

• Reliable industrial supply

Processing Recommendations

Disperse the particles evenly in the adhesive or carrier before assembly.

Important processing factors include:

• Adhesive compatibility

• Particle concentration

• Adhesive viscosity

• Mixing speed

• Dispensing equipment

• Material-path diameter

• Assembly pressure

• Required support-point density

Use gentle mechanical mixing to minimize bubbles and particle damage.

Because the particles are 1 mm in diameter, conventional fine dispensing nozzles may not be suitable. The nozzle, pump and material path must be sufficiently larger than the microsphere diameter.

Particle Settling Considerations

Large particles may settle in low-viscosity formulations during storage or processing.

Recommended controls include:

• Use a suitable adhesive viscosity

• Mix before dispensing

• Minimize holding time

• Maintain uniform particle suspension

• Inspect dispensing consistency

• Validate particle distribution

The final formulation should be tested under actual production conditions.

Spacer Loading Considerations

The recommended loading depends on the bonding area, adhesive volume and required number of support points.

Insufficient loading may provide uneven support. Excessive loading may affect adhesive flow, surface contact and bond strength.

Evaluate:

• Particle distribution

• Support-point density

• Particle settling

• Adhesive flow

• Dispensing performance

• Final gap thickness

• Bond strength

• Long-term stability

Process validation is recommended before production use.

PMMA vs. Inorganic Spacer Particles

PMMA microspheres provide a polymer-based spacing option.

They can be evaluated when the application requires:

• Lightweight polymer particles

• Compatibility with polymer systems

• Reduced contact hardness

• Limited pressure absorption

• Customized particle dimensions

• Dry powder or suspension supply

Mechanical, thermal and chemical compatibility should be confirmed in the final application.

How to Select PAPMMA1000UM

Consider the following factors:

• Target gap thickness

• Mean particle diameter

• Maximum particle diameter

• Particle size tolerance

• Particle size distribution

• Adhesive chemistry

• Adhesive viscosity

• Dispensing method

• Assembly pressure

• Operating temperature

• Required bond strength

For strict gap control, both the mean diameter and maximum particle diameter should be evaluated.

Custom PMMA Spacer Microspheres

SHBC can customize PMMA spacer microspheres according to project requirements.

Customization options may include:

• Custom particle diameter

• Particle size tolerance

• Particle size distribution

• Crosslinking level

• Solid content

• Dispersion medium

• Surface modification

• Dry powder or suspension

• Custom packaging

• OEM and ODM supply

Please provide the target gap, adhesive system, application and required quantity when requesting customization.

Quality Control and Documents

Available product documents may include:

• Certificate of Analysis

• Technical Data Sheet

• Safety Data Sheet

• Particle size test report

• Particle size distribution data

• Microscopy images

• Batch inspection record

• Customized specification sheet

Why Choose SHBC?

Shanghai SanYu Biotechnology Co., Ltd. supplies polymer microspheres, silica microspheres, magnetic beads and functional particle materials.

SHBC provides:

• Precision microsphere manufacturing

• Multiple particle-size options

• Stable batch-to-batch quality

• Customized specifications

• Sample evaluation support

• Pilot-scale production

• Bulk manufacturing capability

• OEM and ODM services

Frequently Asked Questions

What are PAPMMA1000UM microspheres?

PAPMMA1000UM are nominal 1000 μm, or 1 mm, PMMA spheres designed for large-gap and bond-line thickness control.

What are 1000um PMMA spacer microspheres used for?

They can be evaluated for industrial adhesives, electronic modules, optical assemblies, sensor housings, coatings and precision components.

Can PAPMMA1000UM create an exact 1 mm gap?

The nominal diameter helps control the gap. Final thickness also depends on particle size distribution, maximum diameter, loading and assembly pressure.

Can PAPMMA1000UM be mixed into epoxy adhesives?

Yes. They can be evaluated in compatible epoxy, acrylic, silicone, sealant and other polymer systems.

Can PAPMMA1000UM pass through dispensing equipment?

Fine dispensing nozzles are generally unsuitable for 1 mm particles. The complete material path must be larger than the particle diameter.

Will the particles settle?

Settling may occur in low-viscosity formulations. Adhesive viscosity, mixing method and dispensing time should be evaluated.

How much PAPMMA1000UM should be added?

The concentration depends on the bonding area, adhesive volume and required support-point density.

Can SHBC customize the specifications?

Yes. Particle diameter, size tolerance, crosslinking level, supply form, surface properties and packaging can be customized.

Are samples and bulk quantities available?

Yes. SHBC supports sample evaluation, pilot orders and long-term bulk supply.

Request a Sample or Quotation

Contact SHBC for PAPMMA1000UM samples, technical specifications, customized PMMA spacer microspheres and bulk pricing.

Please provide:

• Target application

• Required gap thickness

• Adhesive or carrier system

• Required quantity

• Preferred supply form

• Packaging requirements

• Estimated annual demand

Product: 1000um Spacer PMMA Microspheres
Catalog Number: PAPMMA1000UM
Material: Polymethyl Methacrylate, PMMA
Nominal Particle Size: 1000 μm / 1 mm
Brand: SHBC
Manufacturer: Shanghai SanYu Biotechnology Co., Ltd.