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Advanced High-Performance EMI Shielding Materials
High-Temperature Resistant, Low Electric Resistance, Meeting Multiple Protection Needs
EMI Shielding Materials
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Conductive Rubber
Conductive rubber, also known as conductive elastomer, is made from (silicone) rubber with fillers such as pure silver, silver-coated copper, aluminum, nickel, glass, or graphite. It offers ideal shielding and can also be used for environmental sealing.

Conductive rubber can be processed by molding or extrusion: molded rubber can be made into various thicknesses, shapes, and die-cut gaskets, while extruded rubber can be produced in standard cross-sections like rectangles, circles, 'D', 'U', 'P' shapes, and custom profiles.
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EMI Shielding Materials introduction

We are committed to the innovation and development of raw materials, with a focus on EMI shielding solutions. Our capabilities include the independent design and production of materials like conductive fabrics, foams, and tapes. These materials are widely used in a range of electronic devices like PDP TVs, LCD displays, mobile phones, laptops, and medical instruments, as well as in the military and aerospace industries.

01. Conductive Foam

Conductive foam typically consists of sponge or PORON wrapped in conductive fabric or conductive PI. The primary characteristic of this foam is its excellent surface conductivity, which allows it to be easily affixed to devices needing shielding using adhesive tape.

Nickel-Plated Conductive Foam
Carbon-Plated Conductive Foam
Gold-Plated Conductive Foam
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Parameter

Value

Test Standard

Conductive Fabric Coating

Nickel-Copper-Nickel

-

Color

Silver Gray

Visual

Texture

Plain, Grid

Visual

Foam Material

Polyurethane, TPE

-

Surface Resistance

≤0.05 Ω/inch

GB/T 3048.16-2007

Abrasion Resistance

>400,000 cycles

ASTM D4966-98

Operating Temperature

-40~120 ℃

GB/T 32368-2015

Shielding Effectiveness

60-85 dB (30 MHz-3 GHz)

GJB 61902-2008

Metal Layer Adhesion

Level 4 or above

AATCC TM8-2001

Tensile Strength

≥1.3 kg/25mm

GB/T 12914-91

Initial Adhesion Strength

1200 g/25mm

GB/T 2792-1998

Adhesion Strength Retention

1000 Min/inch

GB/T 4851

Fire Rating

UL940.94 (HF-1)

UL94

RoHS Compliance

Halogen-Free, No Heavy Metals

IEC 62321

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Parameter

Value

Test Standard

Conductive Fabric Coating

Carbon-Copper-Nickel

-

Color

Black

Visual

Texture

Plain, Grid

Visual

Foam Material

Polyurethane, TPE

-

Surface Resistance

≤0.05 Ω/inch

GB/T 3048.16-2007

Abrasion Resistance

>300,000 cycles

ASTM D4966-98

Operating Temperature

-40~120 ℃

GB/T 32368-2015

Shielding Effectiveness

60-80 dB (30 MHz-3 GHz)

GJB 61902-2008

Metal Layer Adhesion

Level 4 or above

AATCC TM8-2001

Tensile Strength

≥1.3 kg/25mm

GB/T 12914-91

Initial Adhesion Strength

1200 g/25mm

GB/T 2792-1998

Adhesion Strength Retention

1000 Min/inch

GB/T 4851

Fire Rating

UL940.94 (HF-1)

UL94

RoHS Compliance

Halogen-Free, No Heavy Metals

IEC 62321

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Parameter

Value

Test Standard

Conductive Fabric Coating

Gold-Copper-Nickel

-

Color

Gold

Visual

Texture

Plain, Grid

Visual

Foam Material

Polyurethane, TPE

-

Surface Resistance

≤0.03 Ω/inch

GB/T 3048.16-2007

Abrasion Resistance

>400,000 cycles

ASTM D4966-98

Operating Temperature

-40~120 ℃

GB/T 32368-2015

Shielding Effectiveness

60-90 dB (30 MHz-3 GHz)

GJB 61902-2008

Metal Layer Adhesion

Level 4 or above

AATCC TM8-2001

Tensile Strength

≥1.3 kg/25mm

GB/T 12914-91

Initial Adhesion Strength

1200 g/25mm

GB/T 2792-1998

Adhesion Strength Retention

1000 Min/inch

GB/T 4851

Fire Rating

UL940.94 (HF-1)

UL94

RoHS Compliance

Halogen-Free, No Heavy Metals

IEC 62321

02. Conductive fabric

Our conductive fabric is designed for use in various electronic devices, providing effective solutions for static electricity (ESD) protection and grounding applications. These materials come in multiple forms and are widely used in communication devices, computers, automatic control equipment, and mobile phones.


Key Features:

Texture Types: Plain weave, grid weave.

Colors: Available in silver-grey, black, and gold.

Varieties: Copper-nickel conductive fabric, aluminum foil conductive fabric, carbon-coated conductive fabric, gold-coated conductive fabric, fiberglass conductive fabric.

Thickness Options: 0.018T, 0.035T, 0.05T, 0.08T, 0.11T (customizable upon request).

Surface Resistance: ≤0.03Ω.

Flame Retardancy: Optional (up to 94V-0).

Comparative Advantages

Product

Thickness

Surface Resistance

Shielding Effectiveness (dB)

Our Conductive Fabric

0.018 mm

≤0.05 Ω/sq

>60 dB (10 MHz - 3 GHz)

Our Conductive Fabric

0.05 mm

≤0.03 Ω/sq

>60 dB (10 MHz - 3 GHz)

Market Conductive Fabric

0.03 mm

≤0.07 Ω/sq

>60 dB (20 MHz - 1 GHz)

03. Polyimide film

Our High-Conductivity PI (Polyimide) film is engineered with a range of advanced features, including low electrical resistance, high shielding effectiveness, heat resistance, and solderability. This film is designed for use in complex electromagnetic environments, offering broad shielding bandwidth, low density, and superior thickness uniformity. It is also highly resistant to oxidation, making it ideal for applications in electronic communications, mobile devices, laptops, and electronic tags.

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Technical Specifications

Parameter

Unit

Value

Test Standard

Color

------

Silver-grey

Visual Inspection

Thickness

mm

0.016 ± 0.0032

FZ/T01003-1991

Thickness

mm

0.025 ± 0.0032

FZ/T01003-1991

Width

mm

460 ± 30

-------

Length

m

50m/Roll

GB/T4669-1995

Shielding Effectiveness

dB

>75

ASTM D4935-99

Surface Resistance

Ω/Sq

≤0.03

ASTM F390

Salt Spray Test

Ω/Sq

<0.06

ASTM B117-03

Operating Temperature

-40 to 280

-------

Frequency Range

------

10MHz ~ 3GHz

-------

ROHS Compliance

------

Halogen and heavy metal-free

IEC62321

04. All directional conductive foam

The all-directional conductive foam is produced using advanced polymer composite foam technology, resulting in uniform cell size, softness, elasticity, and non-shedding properties. This foam evenly distributes to protect device pins and exhibits corrosion resistance, making it an ideal material for long-term device storage. Our latest research and development have produced all-directional conductive foam that can withstand temperatures up to 200°C.


Key Features:

Temperature and Humidity Stability: The conductive foam is unaffected by temperature and humidity changes.

Customizable Surface Resistance: Surface resistance values can be tailored to specific applications.

Customizable Density: Density can be adjusted as needed.

Adhesive Options: Available with double-sided adhesive or for use with other substrates.

Thickness Options: Various thicknesses are available.

Product Specifications

Specification

Value

Surface Resistance

≤0.05 Ω/inch

Vertical Resistance

≤0.03 Ω/inch

Shielding Effectiveness

50-80 dB (10 MHz - 3 GHz)

Heat Resistance

-40℃ to 120℃

Tensile Strength

≥1.3 kg/25 mm

Initial Adhesion

1200 g/25 mm

Adhesion Retention

1000 Min/inch

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04. Conductive Rubber

Conductive Rubber is a flexible, high-performance material designed for effective EMI shielding. It offers excellent elasticity, strong durability, and reliable performance in various temperatures. Ideal for electronic applications, it can be customized in shape and thickness, making it a versatile choice for protecting sensitive components.


Features and Advantages:

Excellent elasticity with a soft surface

Superior EMI shielding effectiveness, exceeding 80dB

High-temperature vulcanization ensures strong intermolecular bonding

Material-saving and reduces labor and assembly time

Eliminates the need for costly molds and supports rapid prototyping

Available Shapes: Square, Half-Round, Triangle

Product Specifications

Parameter

Unit

Value

Test Standard

Color

------

Grey

Visual Inspection

Base Material

------

Silicone Rubber

------

Thickness

mm

Customizable

------

Surface Resistance

Ω

< 0.2 (Rubber Surface)

------

Surface Resistance

Ω

< 0.01 (Copper Foil Surface)

------

Vertical Resistance

Ω

< 0.05

------

Shielding Effectiveness

dB

> 80

MIL-DTL-83528C

Elongation at Break

%

100

ASTM D412

Tensile Strength

PSI

150

ASTM D412

Operating Temperature

-55~+125

------

Flammability Rating

------

HB

UL94

05. Wave Absorption Materials

Soft magnetic composite magnetic sheets are made by uniformly mixing micron-sized flaky alloy magnetic powder with special resin and pressing them into a wide-band electromagnetic noise suppression sheet. These sheets exhibit excellent EMI noise suppression performance and are flexible and easy to apply. They can achieve broadband absorption and shielding from high frequencies of 1GHz to 40GHz, addressing the limitations of traditional silicone-based absorbing materials. Additionally, they can meet ultra-thin gap structure requirements, offering excellent thermal conductivity and good adhesion. The sheets can be easily applied and removed without leaving residue on the surface.


Applications:

High-frequency noise absorption and shielding for communication industry chips.

Noise suppression near high-frequency boards in special industrial control electronics.

EMI noise reduction at high-frequency board locations.

EMI shielding for ADAS smart driving chip locations.

Technical Specifications

Test Item

Typical Value

Unit

Test Method

Color

Dark Grey

---

Visual Inspection

Total Thickness

0.09~0.10

mm

ASTM D3564

Absorbing Material Thickness

0.07

mm

ASTM D374

Density

3.6

g/cm³

ASTM D792

Surface Resistance

>1.0x10^6

Ω

---

Thermal Conductivity

2

W/(m·K)

ASTM D5470

Relative Permeability (μ')

4 @5GHz

---

Agilent E4991B

Relative Permeability (μ")

3.6 @5GHz

---

Agilent E4991B

Dielectric Constant (ε')

118 @5GHz

---

---

Dielectric Constant (ε")

5.8 @5GHz

---

---

Shielding Effectiveness

>12

dB

1G-40GHz

Recommended Operating Frequency

1~40

GHz

---

Adhesion Performance

>0.8

N/25mm

ASTM D3330

Operating Temperature

-20~80

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