5um Spacer PMMA Microspheres PAPMMA5UM

5um Spacer PMMA Microspheres PAPMMA5UM

SHBC PAPMMA5UM are precision 5 μm PMMA microspheres developed for micron-level gap control, uniform layer spacing and controlled bond-line thickness.

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 5 μm Gap Control

The nominal particle diameter helps maintain an approximately 5 μm separation between substrates and functional layers.

Uniform Spherical Morphology

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

Controlled Particle Sizing

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

Smooth Particle Surface

The smooth morphology supports dispersion in compatible display materials, adhesives, coatings and resin systems.

PMMA Polymer Material

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

Custom and Bulk Supply

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

Main Applications

LCD Cell-Gap Control

PAPMMA5UM can be evaluated between display substrates to help maintain a uniform liquid crystal cell gap.

PDLC Smart Films

Suitable for polymer-dispersed liquid crystal systems requiring controlled film thickness and substrate spacing.

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 polymer particles.

Precision Adhesive Bonding

PAPMMA5UM can be dispersed in compatible adhesives to help control an approximately 5 μm bond line.

Sensors and Electronic Components

Can be evaluated for controlling separation between substrates, electrodes and precision electronic components.

Optical and Polymer Research

Suitable for optical materials, polymer composites, microstructures and particle-spacing research.

How 5um PMMA Spacer Microspheres Work

PAPMMA5UM 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

PAPMMA5UM 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

Application Methods

Dry Spray

Dry microspheres can be distributed onto a substrate using suitable precision spraying equipment.

Wet Spray

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

Adhesive Mixing

PAPMMA5UM can be mixed into compatible adhesives, sealants or resins for bond-line control.

Coating Formulation

The particles can be incorporated into compatible optical films, coatings and functional material systems.

The application method should be selected according to the substrate, carrier and required spacer density.

Dispersion and Processing Guide

Uniform dispersion is important for consistent gap control.

Recommended processing considerations include:

• Confirm carrier compatibility

• Premix 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 and equipment.

Spacer Loading Considerations

The recommended particle 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 spacer particles.

They can be evaluated when the application requires:

• Lightweight polymer particles

• Compatibility with polymer systems

• Reduced risk of substrate scratching

• Optical material integration

• Customized particle sizes

• Flexible supply forms

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

How to Select PAPMMA5UM

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 particle 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 PAPMMA5UM microspheres?

PAPMMA5UM are nominal 5 μm PMMA microspheres developed for precision gap and layer-thickness control.

What are 5um PMMA spacer microspheres used for?

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

Can PAPMMA5UM create an exact 5 μm gap?

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

Can PAPMMA5UM be used in LCD and PDLC products?

Yes. The particles can be evaluated for maintaining a controlled gap between display or smart-film substrates.

Can PAPMMA5UM 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 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 PAPMMA5UM 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: 5um Spacer PMMA Microspheres
Catalog Number: PAPMMA5UM
Material: Polymethyl Methacrylate, PMMA
Nominal Particle Size: 5 μm
Brand: SHBC
Manufacturer: Shanghai SanYu Biotechnology Co., Ltd.