Flexible Absorbent Material

Flexible Absorbent Material
The high-performance electromagnetic wave absorbing material, high absorption performance, thin thickness, flexible.
The principle of flexible wave-absorbing material is to convert the interference microwave in electronic equipment into heat energy loss. The main frequency range is from 100MHz to 6GHz. For different frequency ranges and applications, we use different magnetic materials and can design special specifications according to the frequency range, antenna size, etc. to meet customers.
Raw material: composite polymer + microwave absorbing material
Thickness (mm): 0.15, 0.20, 0.25, 0.30, 0.50
Standard size (mm): 210 × 300
Adaptive temperature (℃): -30 ~ 120
Electronic impedance (Ω/□): Min.1.0×109
Frequency range: 100MHz～6GHz microwave absorption
Density (g/cm3): 3.4±0.5
Tensile strength (kg/cm2): 5.4
Application: Suppress electromagnetic wave interference and noise radiation.
Shenzhen Penghui Functional Materials Co., Ltd. provides high-quality wave-absorbing materials for many design engineers and company purchases and provides corresponding technical support services.
Our company provides flexible wave-absorbing materials in the form of rolls or sheets (customer’s choice), and at the same time can be cut according to the customer’s requirements for the required shape of the product, the customer only needs to paste the wave-absorbing sheet.
Our company provides free samples for the majority of design engineers to try, if you find problems in the design process, our company will send a professional service team on-site service.
Welcome to negotiate with engineers and buyers.

The flexible absorbent material is a material used to reduce the reflection and scattering of electromagnetic waves. It is usually made of conductive polymers or composite materials containing conductive particles. These materials are able to absorb electromagnetic waves, thus reducing wave reflection and scattering, achieving the effect of reducing electromagnetic noise and improving signal quality.

Flexible absorbent materials are used in a wide range of applications, including electronic equipment, communication systems, radar, aerospace, and military. They can be made into different shapes and sizes of sheets, tubes, blocks, etc., to suit the requirements of different occasions.

The advantages of flexible absorbent material include lightweight, easy processing, and low cost. However, their performance is greatly affected by environmental factors such as temperature and humidity, and need to be protected.

What are the applications of flexible absorbent material? In what fields can they be useful?

Flexible wave-absorbing materials can be useful in many areas, some of which are listed below:

1. Electromagnetic isolation and shielding: Flexible wave-absorbing materials can be used for electromagnetic wave shielding and isolation, thus reducing electromagnetic radiation and interference.
   Wireless communication: flexible absorbent material can be used in wireless communication equipment, thus reducing signal interference and improving communication quality.
2. Radar: Flexible wave-absorbing materials can be used in radar systems, thus reducing reflections and interference and improving radar detection accuracy.
3. Antenna: Flexible wave-absorbing materials can be used in antenna systems to reduce reflections and interference and improve antenna efficiency.
4. Aerospace: Flexible wave-absorbing materials can be used in the manufacture of aerospace equipment, such as aircraft and satellites, thereby reducing interference from radar and other electromagnetic devices.
5. Automobiles and trains: flexible absorbent material can be used to manufacture sound insulation and shields for automobiles and trains, thereby reducing noise and vibration.
6. Medical equipment: Flexible wave-absorbing materials can be used in medical equipment, such as magnetic resonance imaging machines, thereby reducing interference and electromagnetic radiation.
7. Home appliances and electronic equipment: Flexible wave-absorbing materials can be used in the manufacture of home appliances and electronic equipment, such as TVs and computers, thereby reducing electromagnetic radiation and interference.

Overall, flexible absorbent materials have a wide range of applications and can be useful in any area where electromagnetic interference and reflections need to be reduced.

How do flexible wave-absorbing materials measure wave absorption performance? What are the common test methods?

The wave absorption performance of flexible absorbent material can be measured by a number of test methods. The following are a few common test methods:

1. Static Return Loss (SRL) test: This is the most commonly used test method. The principle is to place the sample in the test device at a certain distance and calculate the absorbing performance by measuring the intensity of the incoming and reflected microwave signals.
2. Microwave resonant cavity test: A sample of absorbing material is placed in a closed cavity and the resonant frequency and Q value of the microwave are measured to calculate the absorbing performance.
3. Flat plate waveguide test: This method uses a waveguide resonator in a flat plate waveguide to test the absorption performance.
4. Double wedge waveguide test: This test method places the material in a waveguide and measures the intensity of the incoming and reflected microwave signals to calculate the absorption performance.
5. Free Space Testing: This test is performed in an open space and the absorbing properties are calculated by measuring the intensity of the incoming and reflected microwave signals.

These test methods can be selected and combined appropriately according to specific needs and sample shapes to obtain accurate absorption performance results. In addition, proper calibration and control of the test environment and equipment are required to ensure the accuracy and reliability of the test results.

How are the absorbing properties of flexible absorbing materials affected in different environments? How can their performance be optimized?

The absorbing performance of flexible absorbent material may be affected by a variety of factors. The following are a few factors that may affect the absorbing performance:

1. Temperature: Temperature changes may affect the performance of flexible wave-absorbing materials, especially in high and low-temperature environments, which may lead to damage and degradation of the performance of the absorbing material.
2. Humidity: High humidity environment may affect the performance of flexible absorbing materials, because moisture may change the chemical and physical properties of the material, which in turn affects the absorbing performance.
3. Mechanical stress: Flexible absorbing materials may be damaged when subjected to mechanical stress, resulting in the degradation of absorbing properties.
4. Size and shape: The size and shape of a flexible absorbing material may affect its absorbing properties. Usually, the thicker and larger the material, the better its absorbing performance may be.

In order to optimize the performance of flexible absorbent material, the following are a few possible methods:

1. Optimize the material formulation and preparation process: to obtain better wave absorbing performance by rational selection of material composition and preparation process.
2. Surface treatment: Use chemical or physical methods to treat the surface of flexible absorbing materials to change their surface chemistry and morphological structure to improve the absorbing performance.
3. Multi-layer structure: Use a multi-layer structure to design and prepare absorbing materials to obtain better absorbing performance.
4. Combined use: Combine multiple absorbing materials to obtain better absorbing performance.

In general, to optimize the performance of flexible absorbing materials, a variety of factors need to be considered, including material formulation, preparation process, surface treatment, multilayer structure, and combined use.

How to choose the appropriate thickness and shape of flexible wave-absorbing materials in the application?

Choosing the proper thickness and shape of flexible absorbent material is very important because they directly affect the wave absorption performance and application effect. The following are some guidelines for selecting the proper thickness and shape:

1. Frequency and wavelength: The first step in selecting the proper thickness and shape is to understand the range of frequencies and wavelengths that need to be absorbed. Depending on the desired absorption frequency, flexible absorbers of different thicknesses and shapes can be selected.
2. Thickness: Typically, the thicker the flexible absorbing material, the better the absorption effect. Choosing the proper thickness requires consideration of factors such as application environment and weight.
3. Shape: The shape of a flexible absorbent material also affects its absorbing performance. In general, absorbing materials with smooth surfaces and geometrically regular shapes have better absorption performance.
4. Multi-layer structure: The absorbing performance of flexible absorbing materials can be improved by using a multi-layer structure. By designing and preparing absorbing materials with multilayer structures, a better absorbing effect can be obtained with smaller thicknesses.
5. Application requirements: The selection of the appropriate thickness and shape of the flexible absorbing material also needs to take into account the specific requirements of the application. For example, if the application requires a flexible absorbing material with certain bending and twisting ability, then it is necessary to choose a more flexible material and consider the appropriate adjustment of the material thickness and shape.

In short, the selection of the appropriate thickness and shape of the flexible absorbing material requires a combination of several factors, including the required absorption frequency, material properties, application requirements, etc.

What are the advantages of flexible absorbent material compared with traditional metal absorbing materials?

Compared to traditional metal absorbers, flexible absorbers have the following advantages:

1. Lighter and flexible: Flexible wave-absorbing materials are usually made of polymer, rubber, and other lightweight materials, which have the advantages of lightness and flexibility, and can be bent, folded, curved and other processing as needed, and can be applied to a variety of irregularly shaped surfaces.
2. Wider frequency band: Compared with traditional metal absorbing materials, flexible absorbing materials have better-absorbing performance in low-frequency, high-frequency, and ultra-high frequency bands, which can achieve wider frequency band coverage.
3. Better mechanical properties: flexible absorbing materials have better mechanical properties and impact resistance, are not easily affected by mechanical shock and vibration, and have better durability and stability.
4. Better corrosion resistance: Compared with traditional metal absorbing materials, flexible absorbent materials are less susceptible to corrosion and oxidation and have better durability and reliability in harsh environments.
5. Easier processing and installation: Flexible wave-absorbing materials can be wound, laminated, and other processing methods, which are easier to prepare and install, saving the cost of preparation and installation.

In short, flexible absorbent materials have the advantages of lighter, flexible, wider frequency bands, better mechanical properties, better corrosion resistance, and easier processing, so they are widely used in many applications.

What factors need to be considered in the design and optimization of flexible wave-absorbing materials?

The following factors need to be considered during the design and optimization of flexible wave-absorbing materials:

1. Frequency range: Flexible absorbing materials need to achieve absorbing performance in a specific frequency range, so the required frequency range needs to be considered in order to select the appropriate material and structure design.
2. Material properties: The material properties of flexible wave-absorbing materials will directly affect the absorbing performance, so the material’s dielectric constant, permeability, thickness, density, elastic modulus, and other factors need to be considered and suitable materials selected.
3. Material structure: The structure design of flexible absorbent material will also directly affect the absorbing performance, so it is necessary to consider the shape, thickness, number of layers, porosity, and other factors of the structure, as well as the interface characteristics between the materials and the position of the absorbing layer.
4. Environmental factors: The application environment of the flexible absorbing material will also affect the absorbing performance, and factors such as temperature, humidity and pressure need to be considered, and suitable materials and structure design need to be selected to suit the application environment.
5. Test method: The test method of flexible wave absorbing material will affect the evaluation of wave absorbing performance, you need to choose the appropriate test method, such as reflection loss method, transmission method, resonant cavity method, etc.
6. Production process: The production process of flexible wave-absorbing materials also needs to be considered, and suitable processing technology, production equipment and processes need to be selected in order to produce products that meet the design requirements.

In short, in the design and optimization process of flexible absorbent material, the above factors need to be considered comprehensively, and various experimental studies and numerical simulations need to be conducted to obtain the optimal design solution to meet the actual requirements.