3um Spacer PMMA Microspheres PAPMMA3UM

3um Spacer PMMA Microspheres PAPMMA3UM

SHBC PAPMMA3UM are precision 3 μm PMMA microspheres developed for micron-level gap control, uniform layer spacing and bond-line thickness control.

The spherical polymer particles can be evaluated for LCD, PDLC, optical films, display modules, precision adhesives, sensors and electronic components.

Product Specifications

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

Key Advantages

Precision 3 μm Gap Control

The nominal particle diameter helps maintain an approximately 3 μm separation between substrates and functional layers.

Uniform Spherical Morphology

Regular spherical particles provide evenly distributed support points and help reduce local thickness variation.

Controlled Particle Size Distribution

Consistent particle sizing supports repeatable cell-gap and bond-line control.

PMMA Polymer Material

PMMA provides a polymer-based spacer option for display, optical and electronic material systems.

Good Dispersion Potential

PAPMMA3UM can be evaluated in compatible solvents, adhesives, coatings, resins and display formulations.

Custom and Bulk Supply

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

Main Applications

LCD Cell-Gap Control

PAPMMA3UM can be evaluated between display substrates to help maintain a uniform liquid crystal cell gap.

PDLC Films

Suitable for polymer-dispersed liquid crystal films requiring controlled layer thickness.

Display and Touch Modules

Can be used for micron-level spacing in display panels, touch modules and optical assemblies.

Optical Films and Coatings

Suitable for optical films, functional coatings and light-management materials requiring uniform particles.

Precision Adhesive Bonding

Can be dispersed in compatible adhesives to help control an approximately 3 μm bond line.

Sensors and Electronic Components

Suitable for controlling separation between substrates, electrodes and precision components.

Research and Material Development

Can be evaluated in optical materials, polymer composites, microstructures and particle-spacing research.

How 3um PMMA Spacer Microspheres Work

PAPMMA3UM microspheres are dispersed in a compatible liquid crystal formulation, adhesive, coating or carrier.

After coating or assembly, the particles form physical support points between two surfaces. Their nominal diameter helps limit excessive compression and maintain a controlled separation.

The final gap may also depend on:

• Mean particle diameter

• Maximum particle diameter

• Particle size distribution

• Spacer concentration

• Dispersion uniformity

• Assembly pressure

• Substrate flatness

Product Benefits

PAPMMA3UM helps provide:

• Micron-level gap control

• More uniform layer thickness

• Stable support-point distribution

• Reduced local gap variation

• Improved component alignment

• Repeatable assembly performance

• Customized particle specifications

• Reliable batch supply

Dispersion and Processing Guide

Uniform dispersion is important for consistent gap control.

Recommended processing steps include:

• Confirm compatibility with the carrier

• Premix the particles before application

• Use controlled mechanical stirring

• Minimize air and bubble formation

• Avoid particle aggregation

• Control coating thickness

• Maintain consistent assembly pressure

Controlled ultrasonication may be used when compatible with the formulation.

Application Methods

Dry Spray

Dry particles can be distributed onto the substrate using suitable precision spraying equipment.

Wet Spray

The microspheres can be dispersed in a compatible solvent and applied to the substrate surface.

Adhesive Mixing

PAPMMA3UM can be mixed into compatible adhesives, sealants or resins for bond-line control.

Coating Formulation

The particles can be incorporated into compatible optical or functional coating systems.

The most suitable method depends on the substrate, formulation and required spacer density.

Spacer Loading Considerations

The recommended concentration depends on the substrate area, required support-point density and formulation properties.

Insufficient loading may produce uneven spacing. Excessive loading may affect optical appearance, coating quality or adhesive performance.

Evaluate:

• Particle dispersion

• Surface coverage

• Particle aggregation

• Coating uniformity

• Final gap thickness

• Optical performance

• Adhesive strength

• Long-term stability

Process validation is recommended before production use.

PMMA vs. Inorganic Spacer Particles

PMMA microspheres provide a polymer-based alternative to rigid inorganic spacers.

They can be considered when the application requires:

• Lightweight polymer particles

• Compatibility with polymer systems

• Reduced risk of substrate scratching

• Optical material integration

• Customized surface properties

• Adjustable supply forms

Final material compatibility and mechanical performance should be validated in the complete application system.

How to Select PAPMMA3UM

Consider the following factors:

• Target cell gap or bond line

• Mean particle diameter

• Maximum particle diameter

• Particle size tolerance

• Particle size distribution

• Carrier or adhesive chemistry

• Optical requirements

• Application method

• Assembly pressure

• Operating temperature

Both mean diameter and maximum diameter should be evaluated for precision gap-control applications.

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

• Solid content

• Dispersion medium

• Surface modification

• Dry powder or suspension

• Custom packaging

• OEM and ODM supply

Please provide the target gap, application, carrier system 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 microsphere materials.

SHBC provides:

• Precision microsphere manufacturing

• Stable batch-to-batch quality

• Multiple particle-size options

• Customized specifications

• Sample evaluation support

• Pilot-scale production

• Bulk manufacturing capability

• OEM and ODM services

Frequently Asked Questions

What are PAPMMA3UM microspheres?

PAPMMA3UM are nominal 3 μm PMMA microspheres developed for precision gap and layer-thickness control.

What are 3um PMMA spacer microspheres used for?

They can be evaluated for LCD, PDLC, optical films, display modules, precision adhesives, sensors and electronic components.

Can PAPMMA3UM create an exact 3 μm gap?

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

Can PAPMMA3UM be used in LCD panels?

Yes. They can be evaluated as polymer spacer particles for maintaining a controlled cell gap between display substrates.

Are PAPMMA3UM suitable for PDLC films?

Yes. They can be evaluated in compatible PDLC formulations requiring controlled layer thickness.

Can PAPMMA3UM be mixed into adhesives?

Yes. They can be evaluated in compatible epoxy, UV-curable adhesive, acrylic and other polymer systems.

How should the particles be dispersed?

Use controlled mechanical stirring or compatible ultrasonication while minimizing bubbles and particle aggregation.

Can SHBC customize the specifications?

Yes. Particle diameter, size tolerance, solid content, dispersion medium, surface properties and packaging can be customized.

Are samples and bulk quantities available?

Yes. SHBC supports laboratory samples, pilot orders and long-term bulk supply.

Request a Sample or Quotation

Contact SHBC for PAPMMA3UM samples, technical specifications, customized PMMA spacer microspheres and bulk pricing.

Please provide:

• Target application

• Required gap thickness

• Carrier or adhesive system

• Required quantity

• Preferred supply form

• Packaging requirements

• Estimated annual demand

Product: 3um Spacer PMMA Microspheres
Catalog Number: PAPMMA3UM
Material: Polymethyl Methacrylate, PMMA
Nominal Particle Size: 3 μm
Brand: SHBC
Manufacturer: Shanghai SanYu Biotechnology Co., Ltd.