CF6860 Static-Dissipative Epoxy Glass Fabric Laminate

Static-Dissipative Epoxy Glass Fabric Laminate Description

Static-Dissipative Epoxy Glass Fabric Laminate is designed to mitigate electrostatic discharge (ESD) risks in sensitive electronics environments. The material consists of a continuous glass woven fabric impregnated with an epoxy resin system enhanced with carbon nanotubes (CNTs), creating a controlled conductivity network. This formulation achieves surface resistivity of 1×10⁶ to 1×10⁹ Ω/sq, compliant with ANSI/ESD S20.20 standards for ESD-safe work surfaces, while maintaining a glass transition temperature (Tg) of 160°C and thermal conductivity of 0.25 W/m·K. The laminate’s moisture absorption rate remains below 0.1% after 24 hours of immersion, preserving dielectric constant (4.4–5.0) and dissipation factor (0.015–0.020) stability in humid conditions. Its coefficient of thermal expansion (CTE) is 12 ppm/°C, aligning with printed circuit board (PCB) substrates to reduce thermal stress. Surface resistivity and volume resistivity are controlled to prevent charge accumulation without risking electrical overstress (EOS). The material’s smooth surface finish (Ra ≤ 1.0μm) minimizes particle adhesion and simplifies cleanroom cleaning, while its chemical resistance to solvents like isopropyl alcohol (IPA) and acetone ensures durability in ESD-controlled areas.

Static-Dissipative Epoxy Glass Fabric Laminate Applications

Static-Dissipative Epoxy Glass Fabric Laminate is critical in electronics manufacturing, assembly, and handling environments where ESD protection is paramount. In semiconductor fabrication facilities, it is used for ESD workstations, wafer carriers, and ionizer mounting plates due to its controlled conductivity and cleanroom compatibility. The material’s ESD resistance makes it ideal for PCB assembly lines, protecting components during soldering, inspection, and testing. It is also employed in medical device manufacturing for sterile packaging stations and in aerospace electronics for avionics bay panels, where electrostatic discharge could compromise flight-critical systems. Additionally, the laminate’s thermal stability supports its use in LED manufacturing equipment and battery module assembly lines.

Static-Dissipative Epoxy Glass Fabric Laminate Packaging

Our products are packaged in customized cartons of various sizes based on the material dimensions. Small items are securely packed in PP boxes, while larger items are placed in custom wooden crates. We ensure strict adherence to packaging customization and the use of appropriate cushioning materials to provide optimal protection during transportation.

Packaging: Carton, Wooden Box, or Customized.

Kindly review the packaging details provided for your reference.

Manufacturing Process

1.       Testing Method

(1)    Chemical Composition Analysis - Verified using techniques such as GDMS or XRF to ensure compliance with purity requirements.

(2)    Mechanical Properties Testing - Includes tensile strength, yield strength, and elongation tests to assess material performance.

(3)    Dimensional Inspection - Measures thickness, width, and length to ensure adherence to specified tolerances.

(4)    Surface Quality Inspection - Checks for defects such as scratches, cracks, or inclusions through visual and ultrasonic examination.

(5)    Hardness Testing - Determines material hardness to confirm uniformity and mechanical reliability.

Please refer to the SAM testing procedures for detailed information.

Static-Dissipative Epoxy Glass Fabric Laminate FAQs

Q1. How does its surface finish benefit ESD control?

Its smooth surface finish (Ra ≤ 1.0μm) minimizes particle adhesion, reducing contamination risks in cleanrooms while maintaining ESD dissipative pathways.

Q2. Is it compatible with automated optical inspection (AOI)?

Yes, its low surface roughness and uniform conductivity prevent false readings during AOI of PCBs.

Q3. Does it require grounding straps for ESD protection?

No, it's inherent conductivity provides passive ESD dissipation without external grounding, simplifying workstation setup.

Related Information

1.       Common Preparation Methods

The production of Static-Dissipative Epoxy Glass Fabric Laminate involves a multi-stage process combining advanced resin formulation, precision fiber reinforcement, and controlled conductivity enhancement. It begins with a modified epoxy resin system using bisphenol A epoxy resin, dicyanate ester, and a polyetherimide (PEI) toughening agent, blended with multi-walled carbon nanotubes (MWCNTs) at 0.5–1.0 wt% loading. The resin is dispersed using high-shear mixing and ultrasonication to ensure uniform CNT distribution. Continuous glass woven fabric, typically E-glass type with a weave density of 150-300 g/m², undergoes surface treatment with amino-silane coupling agents to improve adhesion. In the prepregging stage, the glass fabric is saturated with the resin-CNT mixture using a solventless hot-melt process, with resin content controlled to 25-30% by weight. The impregnated fabric is partially cured in a nitrogen-purged oven at 130-150°C to create a B-stage material with <0.1% volatile content. For lamination, multiple prepreg plies are stacked with [0/90] orientation and pressed under 10-15 MPa pressure while temperature ramps from 100°C to 160°C over 4 hours, ensuring complete crosslinking and a Tg exceeding 155°C. Post-curing, the laminate undergoes precision machining, including diamond grinding for surface finish (Ra ≤ 1.0μm) and laser cutting for ESD-safe edges. Quality control involves surface resistivity mapping (four-point probe), thermal cycling (-40°C to 160°C for 100 cycles), and chemical resistance testing (IPA/acetone exposure) to validate performance in ESD-controlled environments.