DMD insulation paper is an insulating material widely used in the electrical field. Its full name is polyester film polyester fiber non-woven fabric soft composite material. The following is a detailed analysis of DMD insulation paper:
1. Material composition and structure
DMD insulation paper is mainly composed of three layers:
Polyester film: This is the core layer of DMD insulation paper, located in the middle. Polyester film has excellent electrical properties, such as high insulation resistance, high dielectric strength, etc., which can effectively prevent electrical breakdown and arc discharge. At the same time, polyester film also has good heat resistance and mechanical strength, and can maintain stable performance under high temperature and mechanical stress.
Polyester fiber non-woven fabric: This layer is usually located on one or both sides of the polyester film and is made of polyester fiber through a special process. Polyester fiber non-woven fabric has good impregnation performance and high mechanical strength, which can enhance the flexibility and durability of DMD insulation paper. At the same time, it can also provide additional insulation protection to prevent short circuits and failures of electrical equipment.
Adhesive: Between the polyester film and the polyester fiber non-woven fabric, an adhesive is used to firmly bond them together. The selection and use of adhesives are crucial to the performance of DMD insulating paper. It must have good heat resistance and electrical properties to ensure that DMD insulating paper will not delaminate or fall off under high temperature and electrical stress.
2. Performance characteristics
Excellent electrical properties: DMD insulating paper has high insulation resistance and dielectric strength, which can effectively prevent short circuits and failures of electrical equipment. At the same time, it also has low dielectric constant and dielectric loss, which can reduce energy loss and heat generation of electrical equipment.
Good mechanical properties: DMD insulating paper has good tensile strength and folding times, and can withstand certain mechanical stress and bending deformation. This enables it to maintain stable performance in various complex environments and adapt to the installation and use requirements of various electrical equipment.
High temperature resistance: DMD insulating paper has two heat resistance grades, Class B and Class F, which are resistant to 130℃ and 155℃ respectively. This enables it to maintain stable performance in high temperature environments and will not deform or be damaged due to temperature increases.
Environmentally friendly and recyclable: DMD insulating paper is made of environmentally friendly materials and will not cause harm to the environment and human body. At the same time, it can also be recycled and reused, in line with the concept of sustainable development.
3. Application scenarios
DMD insulating paper is favored for its excellent performance and wide application fields. It is mainly used in the following scenarios:
Motor field: DMD insulating paper is a stereotyped insulating material for Y series motors, which can be used for slot insulation, inter-turn and inter-layer insulation of small and medium-sized motors. It can effectively prevent short circuits and failures of motors and improve the reliability and service life of motors.
Transformer field: DMD insulating paper can be used for insulation protection of transformers, such as winding insulation, core insulation, etc. It can withstand high electrical and mechanical stresses to ensure the stable operation of transformers.
Other electrical equipment: DMD insulating paper can also be used for insulation protection of electrical equipment such as distribution cabinets, switch cabinets, cables, etc. It can provide reliable insulation protection to prevent short circuits and failures of electrical equipment.
4. Purchase suggestions
When purchasing DMD insulating paper, you need to pay attention to the following points:
Understand the use requirements: Choose suitable DMD insulating paper according to factors such as the type of electrical equipment, voltage level, working environment, etc.
Check product certification: Choose products certified by authoritative organizations, such as UL certification, CE certification, etc., to ensure that the quality and performance of the product meet the standards.
Pay attention to product specifications: Choose the appropriate DMD insulation paper specifications and thickness according to the size and installation requirements of the electrical equipment.
Choose a high-quality brand: Choose a well-known brand of DMD insulation paper to ensure the quality of the product and after-sales service.
In summary, DMD insulation paper is a composite insulation material product composed of materials such as polyester film and polyester fiber non-woven fabric, which has excellent electrical and mechanical properties as well as good high temperature resistance and environmental protection performance. It has broad application prospects in the fields of electrical equipment such as motors and transformers.
