The electrical properties of a material are those which determine ability of material to be suitable for a particular electrical engineering application. Over the last few decades, polymer-based materials have been greatly developed in electrical applications. Polymer materials with high dielectric constants are used in applications such as film capacitors and artificial muscles, while polymer materials with low dielectric constants are used in the field of capacitors and dielectric materials. As an experienced polymer analysis company, Alfa Chemistry offers different types of test methods to test the electrical properties of polymer materials in different industries.
We can provide a wide range of electrical properties testing projects that include, but are not limited to the following.
● Arc resistance
Arc resistance is the ability of the polymer material to resist the action of a high voltage electrical arc and resist the formation of a conducting path along its surface under a given time. The results of arc resistance tests are usually expressed in terms of the time it takes for the polymer surface to become electrically conductive, the values are therefore reported in seconds (s).
● Dielectric constant
The dielectric constant of a material can be expressed as the ratio of the capacitance when the material is used as a dielectric in a capacitor against the capacitance when there is no dielectric material used, i.e., in a vacuum. The ability of a polymer to store electrical energy can be characterized by testing the dielectric constant.
● Dielectric strength
Dielectric strength is an important parameter in the electrical industry applications of polymeric materials. It is an intrinsic material property that represents the maximum electric field a polymer material can sustain ideally before its insulating properties begin to fail. Dielectric strength is calculated by dividing the breakdown voltage by the thickness of the sample. The higher the dielectric strength, the better the quality of the insulator.
● Volume resistivity
Volume Resistivity of polymers material measures how strongly a polymer material opposes the flow of electric current through a volume of cubic specimen. The higher the volume resistivity, the less conductive the polymer material will be.
● Surface resistivity
Surface resistivity refers to the resistance experienced by the leakage of current along the surface of insulating material. Surface resistivity dictates the conduction of any given material, including polymer materials. The higher the surface resistivity, the lower the conduction of the polymer material because there will be low leakage current.
Our test standards mainly include ASTM D495, ASTM D150, ASTM D149, IEC 60243-1, ASTM D257 and IEC 62631-3-1:2016.
We will test in accordance with the above standards, but we can also conduct the test according to the specific requirements of our customers.
For many years, Alfa Chemistry has been providing customers with comprehensive electrical properties testing services for polymer materials. You can trust Alfa Chemistry with the following capabilities.
● Extensive experience: Our technical experts have a wealth of experience in the field of electrical properties testing and can meet the various needs of our customers.
● Optimum price: Our test prices are very competitive in the market to help our customers reduce their capital and time costs.
● Sincere service: Our technical experts will provide a full range of services to our customers.
