Products/Services for Polyurethane Dielectric Constant
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Polyurethane Adhesives and Sealants - (320 companies)Polyurethane adhesives and sealants provide excellent flexibility, impact resistance, and durability. They are available in one-part or two-part systems. Polyurethane adhesives and sealants provide excellent flexibility, impact resistance...Compound TypeSubstrate / Material CompatibilityDissimilar Substrates -
Electrical Insulation and Dielectric Materials - (398 companies)...constant. Resistivity is the longitudinal electrical resistance (ohm-cm) of a uniform sample of unit length and unit cross-sectional area. Dielectric strength is the maximum voltage field that electrical insulation and dielectric materials can... -
Dielectric Ceramics and Substrates - (155 companies)Dielectric ceramics and substrates are electrical insulators with dielectric strength, dielectric constant and loss tangent values tailored for specific device applications. Dielectric ceramics and substrates are electrical insulators... -
Industrial Adhesives - (1376 companies)Industrial adhesives consist of hot melt adhesives, epoxy adhesives, polyurethane adhesives, sealants, thermoset adhesives, UV curing adhesives, silicon adhesives, acrylic adhesives and other related industrial products. How to Select Industrial... -
Conformal Coatings - (147 companies)...dielectric strength, and dielectric constant. Optical properties include index of refraction, a measure of the speed of light in a material, and transmission. Applications. Conformal coatings are used in many industries and applications. Some products... -
Electrical and Electronic Resins - (509 companies)...temperature. Thermal conductivity. Coefficient of thermal expansion (CTE). Electrical Properties. Resistivity. Dielectric strength. Dielectric constant. Optical Properties. Optical properties include index of refraction, a measure of the speed of light...
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Encapsulants and Potting Compounds - (249 companies)...of polymeric material, which must fdeliver an adequate balance of mechanical strength, chemical resistance, dielectric insulation, and thermal conductivity within a broad temperature range (generally from -65 to 200 C [-85 to 390 F]). Applications...
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Elastomers and Rubber Compounds - (528 companies)...are available on the GlobalSpec SpecSearch Database. Some of the most common include butyl, silicone, polyurethane, and isoprene. Butyl is a synthetic rubber that provides resistance to water, steam, alkalis, and oxygenated solvents. Butyl has low...
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Molding Compounds and Resins - (282 companies)...resistance, high dielectric strength, and a low dielectric constant. Silicone molding compounds also provide good resistance to corona and electric breakdown, even after exposure to moisture and higher temperatures. Most molding compounds are composite...
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Polymers and Plastic Resins - (869 companies)...on a variety of different systems, including silicone, polyurethane, chloroprene, butyl, polybutadiene, neoprene, natural rubber or isoprene, and other synthetic rubber or compounds. Thermosets or thermosetting plastics are polymer materials that have...
Product News
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General Plastics Manufacturing Co.
Dielectric Materials for RF & Aerospace . The material 's dielectric features include a low dielectric constant and a low loss tangent. These features reduce signal loss and promote clean RF transmission. It prevents unwanted energy loss and interference, helping to keep systems stable. This type of polyurethane foam is found in many aerospace and RF parts. Engineers use it in radomes, antenna housing, aircraft insulation, and sensitive components, and it delivers strength and precision in each application. LAST-A-FOAM polyurethane... (read more) -
General Plastics Manufacturing Co.
LAST-A-FOAM® for use as dielectric material R) rigid foams are durable, closed-cell and do not absorb water, thus preventing changes in dielectric performance. Our dielectric materials display non-dispersive and low-loss properties, where dielectric performance stays stable at a wide range of frequencies and temperatures. While available densities range from 3 to 40 pounds per cubic foot, densities and formulations can be tailored to a customer 's needs and specific dielectric constant and loss tangent requirements. LAST-A-FOAM (R... (read more)Browse Foams and Foam Materials Datasheets for General Plastics Manufacturing Co. -
General Plastics Manufacturing Co.
RF-2200 advanced dielectric material window through improved thermal mechanical properties. This makes it suitable for processing high-temperature composite prepregs, such as those found in radomes and other panels. This closed-cell polyurethane foam does not absorb water, ensuring signal performance. Standard densities are available in 3, 4 and 6 pounds per cubic foot, and other densities can be provided to meet specific dielectric constant and loss tangent requirements. These foams ' electrical properties have been fully... (read more)Browse Foams and Foam Materials Datasheets for General Plastics Manufacturing Co. -
Dexmet® Corporation, a part of PPG’s engineered materials division
Low Loss Dielectric Materials Low Loss Dielectric Materials. Cuming Microwave manufactures a full line of low loss dielectric materials. Our materials range in dielectric constant from 1.03 to 30. These materials have unique dielectric and physical properties. Dielectric materials can be used to adjust the Q of cavities, as impedance transitions, substrates for stripline antennas, in transmission lines, smart skins, as dielectric radomes, dielectric spacers, or for circuit substrates. Products are available in rod or sheet... (read more)Browse Foams and Foam Materials Datasheets for Dexmet® Corporation, a part of PPG’s engineered materials division -
Interquip Electronics Co., Ltd.
Dielectric Ceramic Filter used for Communication High-Performance Dielectric Ceramic Filter - Boosting Communication Efficiency. Interquip introduces a new line of dielectric ceramic filters, specifically designed for navigation, mobile communications, and Wi-Fi applications. Utilizing dielectric materials with low loss, low dielectric constant, and stable temperature coefficients, these filters deliver enhanced signal stability and efficiency. High Power Handling: Supports input power up to 5W, meeting the needs of high-power devices. Wide... (read more)Browse Oscillators Datasheets for Interquip Electronics Co., Ltd. -
General Plastics Manufacturing Co.
Using Polyurethane Foam in Aerospace Applications such as fluctuating temperatures, vibrations, and pressure changes encountered during flight. Specific formulations give it dielectric properties and durability, which are critical for protecting sensitive aerospace systems. FST-3800 and FR-6700 are two widely used grades in aerospace manufacturing. The FST-3800 is a flexible polyurethane foam that meets flame, smoke, and toxicity (FST) standards, making it ideal for cabin interiors and areas where passenger safety is paramount. The FR-6700... (read more)Browse Protective Liners and Lining Systems Datasheets for General Plastics Manufacturing Co. -
Dexmet® Corporation, a part of PPG’s engineered materials division
Polyurethane foam microwave and radar absorbers Foam Absorbers. Cuming Microwave manufactures a family of flexible, carbon loaded, polyurethane foam microwave and radar absorbers. These are all electrically resistive materials which attenuate RF energy through ohmic loss. These carbon-based microwave absorbers such as C-RAM MT have high dielectric loss over a very broad frequency range, and are available in a range of loadings and thicknesses to be optimized for particular frequencies. Many grades are available with a peel-and-stick adhesive... (read more)Browse Foams and Foam Materials Datasheets for Dexmet® Corporation, a part of PPG’s engineered materials division -
General Plastics Manufacturing Co.
Flame-retardant, closed-cell polyurethane foam LAST-A-FOAM (R) FR-3700 Performance Core. Last-A-FoamFR-3700 is a CFC-free, rigid, closed-cell, flame-retardant polyurethane foam available in densities ranging from 3 to 40 pounds per cubic foot. It exhibits a high strength-to-weight ratio due to its cellular structure and cross-linked resin. Because of its closed-cell structure, LAST-A-FOAM (R) FR-3700 has great resistance to water absorption, and will not swell, crack, or split on exposure to water. This series is non-abrasive and can... (read more)Browse Foams and Foam Materials Datasheets for General Plastics Manufacturing Co. -
Changchun Yutai Optics Co., Ltd.
Plano Dielectric HR Mirrors What is the difference between HR and AR coating?. Increase your glass optic's performance with an anti-reflective (AR) coating or a high-reflective (HR) coating. Specifically designed HR coatings reflect most or all of a wavelength band while adding AR coatings will increase the transmission of a specific wavelength or wavelength band. (read more)Browse Optical Mirrors Datasheets for Changchun Yutai Optics Co., Ltd. -
Changchun Yutai Optics Co., Ltd.
Optical Dielectric HR Mirrors Features: High Reflectivity, Narrow Band and Broadband Wavelength are Available, Easy to Mount/Align and Operation. High-reflection (HR) Dielectric Mirrors refer to coating layers of dielectric films on optical substrates, and are designed to achieve the highest possible reflectance, usually at specific wavelengths.These coatings can be tailored for most any angle. Specially Dielectric HR Mirrors are suitable for the application of laser resonator cavity and return of light path. Specifications... (read more)Browse Optical Lenses Datasheets for Changchun Yutai Optics Co., Ltd.
Conduct Research
Polyurethane Foam: Dielectric Materials for Use in Radomes and Other Applications. Many polyurethane foams offer a wide variety of physical properties, as well as desirable dielectric properties for applications requiring minimal dielectric constant and loss tangent. In many such applications...
More Information
Indicates content that may require registration and/or purchase.
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Physical Properties of Polymers Handbook
M. V. Huynh, Low Dielectric Constant Polyurethane Filleting Com- position, US Patent: 5, 221, 783 (1993).
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Staking Lumped Low-Pass Band Filters With ECCOSTOCK® FPH
ECCOSTOCK® FPH/12-4H, a pink, high-temperature, low dielectric constant polyurethane foam was selected as a staking compound for use in lumped low-pass band filters capable of 5000W of radio frequency RF power.
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Thermal Conductivity
M. V. Huynh, Low Dielectric Constant Polyurethane Filleting Com- position, US Patent: 5, 221, 783 (1993).
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Electrostriction of Polar Glasses
nonpolar polymers such as polyethylene typically have dielectric constants (resulting entirely from polarization of the chemical bonds) of about 2.3, while polyurethanes have dielectric constants of about 6.8.
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Advanced Materials and Processes II
Keywords: Dielectric Elastomer Actuators, Barium Titanate, Thermosetting Polyurethane , Dielectric Constant , Electrical Breakdown Strength .
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Synthesis and Thermal-Optic Properties of Azo Polyurethane Containing Chiral Unit
Azobenzene Polyurethane , Dielectric Constant , Refractive Index .
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New DEA materials by organic modification of silicone and polyurethane networks
The intrinsically high dielectric constant of polyurethane elastomers in contrast to silicones is mainly due to the urethane group or related modifications such as the biuret building blocks (Figure 11).
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Influence of various loadings of hydrophilic or hydrophobic silica nanoparticles on water uptake and porosity of a polyurethane coating
The dielectric constant of polyurethane is 5.6 and that of SiO2 is 4.0 [36].
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Semi‐interpenetrating polymer networks from castor oil‐based polyurethanes and chlorinated rubber
To,,,, and dielectric constants of polyureth- anes and chlorinated rubber semi-IPNs .
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High-field electrostriction of elastomeric polymer dielectrics for actuation
Other materials such as polyurethane can achieve higher actuation pressures at lower voltages, due to their greater permittivity (the dielectric constant of polyurethane is roughly 7, compared to 3 for silicones).
