Properties of Insulating Materials

With the development of electromechanical industry to high voltage, large capacity, etc., the quality and reliability of insulation structure put forward more and more high requirements. The key to the manufacture of insulating structures lies in the rational selection and application of insulating materials. In order to make the performance of the insulating material structure to meet the requirements of various aspects, we must first ensure that the performance of the insulating material meets the requirements of the actual application.

Insulating materials in the application of performance is summarized in electrical, mechanical, chemical, thermal, environmental and economic aspects of performance.

Nodal properties of insulating materials

Dielectric properties of insulating materials are usually characterized by dielectric polarization, dielectric conductivity, dielectric loss and dielectric strength of four basic properties. In addition to capacitor insulating materials in power equipment due to the requirement of dielectric storage energy and the need for high dielectric constant, other uses of insulating materials do not require a high dielectric constant, but rather require the ability to withstand the voltage in operation and have a sufficient life expectancy.

The mechanical properties of Insulation Materials

Mechanical properties of materials, including tensile, compression, bending, shear and other strength, tensile and compression mold, elongation, and some of the more difficult to define the properties such as abrasion resistance, can be wound, tear resistance.

Thermal properties of insulating materials

The thermal properties of solid insulating materials, such as heat resistance and thermal conductivity, often play a major role in small and medium-sized motors. Motor in the operation process due to the continuous consumption of energy and heat, so the motor insulation materials inside the long-term thermal state of work, so that its gradual aging and reduce or even completely lose should have the electrical properties and mechanical strength, the motor is therefore damaged, so the choice of insulating materials must have a good heat resistance.

The chemical and other properties of insulating materials

Stability and compatibility of insulating materials for environmental conditions, in some cases can also be an important factor in determining its performance and application. Such as motor often run, in the start, accelerate and other complex situations, making the use of the motor environment is harsh, complex dynamic conditions, mainly reflected in the high temperature, vibration and corrosive, etc., so the requirements of the motor insulating materials in the high temperature, hot and humid in the harsh conditions, has a high level of resistance to oxidation and corrosion resistance. Under the action of DC active low-frequency voltage, the performance of insulation resistance to electrolysis is also very important.

The chemical and other properties of insulating materials

Stability and compatibility of insulating materials for environmental conditions, in some cases can also be an important factor in determining its performance and application. Such as motor often run, in the start, accelerate and other complex situations, making the use of the motor environment is harsh, complex dynamic conditions, mainly reflected in the high temperature, vibration and corrosive, etc., so the requirements of the motor insulating materials in the high temperature, humidity and heat of the harsh conditions, has a high resistance to oxidation and corrosion resistance. Under the action of DC active low-frequency voltage, the performance of insulation resistance to electrolysis is also very important.