High Tracking-Resistant Laminated Board (Development Product)

Diagram showing Glass Cloth Composite providing High Strength and Heat Resistance, and Thermosetting & High Insulation Resin providing Tracking Resistance and Insulation Property.

Our company leverages the formulation technologies we have cultivated over the years to actively engage in the development of new materials and high value-added products.
Using diallyl phthalate resin (DAP resin), we have developed a high-insulation laminated board that boasts high tracking resistance (900V) and can be utilized as structural components and insulating boards under high-voltage conditions.

Laboratories

High Performance Plastic Technology Development Laboratory

Features

Halogen-Free and Phosphorus-Free

It is halogen-free and phosphorus-free, with high flame resistance.

Tracking Resistance 900V (UL2597 STT)

As a conventional tracking resistance test standard, there is the CTI (Comparative Tracking Index Test) based on IEC 60112, but the upper limit of the test voltage is 600V. In response to increasing demands for the electrical properties of materials, the newly established UL2597 (STT: Surface Tracking Test) standard by UL Standards & Engagement allows testing at voltages up to 900V.
Our newly developed product has achieved test results at 900V under this standard.

Thanks to its excellent tracking resistance, it is expected that the product could enable the reduction of creepage distances when used as a structural component, improve the design flexibility of insulating materials, and potentially reduce the number of components required.

High Insulation

Maintains insulation property for ≥300 hours under DC 4kV and 85degC/85% humidity conditions (thickness 0.4mm).
Possibility of achieving thinner and lighter insulation materials.

Interlayer Insulation Reliability Applied Voltage：4kV, Test Condition：85℃／85%

Two graphs comparing insulation resistance over time: left graph for Developed Laminated Board with copper and insulation layers, showing high insulation resistance; right graph for PPS Molding Material with silver paste and molding material, showing insulation resistance decreasing over time.

High Strength

Being a glass cloth composite material, it exhibits higher strength compared to resin-molded materials.

The Lineup of Our Company’s High Tracking Resistance Products

	Laminate (Development Product)	Molding Compound AM-3800	Coating Powder (Development Product)

Tracking Resistant	900V (UL2597 STT)
Feature	High Strength Heat Resistance Large-Asrea Sample	Heat Resistance Molding / Forming Process	Heat Resistance High Adhesion to Metal
Substrate / Material	Glass Cloth Composite Thermosetting Resin (DAP resin system)	Glass Fiber Composite Thermosetting Resin (DAP resin system)	Thermosetting Resin
Product Page	This Page	Diallyl Phthalate (DAP) Molding Compound for High Voltage (800V) and High Heat Resistance	Epoxy Resin Coating Powder with High Tracking Resistance for Electrical Insulation

Applications

Various Insulating Structural Components

Insulation components for xEVs, industrial equipment, and electronic devices

Insulation Components for Electric Vehicles
Insulation Substrate for Coils, such as Wireless Charging
Bus Bar Substrates, Bus Bar Insulation, and Insulation Boards for Bus Ducts
Insulation Board for Electronic Substrates

General Properties

Item	Unit˙Condition	Laminate (Development Product)
Tracking Resistance	V, UL2597 STT	900
Flame Resistance	Test conducted by our company in accordance with UL84	V-0 Equivalent (Thickness 0.8mm)
Specific Gravity of the Insulation Layer	-	2.1
Dielectric Breakdown Voltage	kV/mm	40
Insulation Resistance	Ω	25℃: 6.3 × 10¹³ 175℃: 2.0 × 10⁸
Thermal Conductivity	W/(m・K), 25℃	0.8
Flexual Modulus	GPa	23
Dielectric Constant	(1GHz)	5.0
Dielectric Loss Tangent	(1GHz)	0.008