(6) adhesive tape is at room temperature or at a certain temperature and pressure can be self-forming strip material, sub-film adhesive tape, fabric adhesive tape and no substrate adhesive three categories. Dry belt insulation performance, easy to use, suitable for motor and other electrical equipment winding insulation, bandage and fixed.
When the motor is repaired, the same insulation material as the original should be used. If there is no suitable insulating material or can not clarify the original material, can be used with the original material similar to the insulation material, or according to the motor nameplate on the insulation level to choose. Improper selection of insulation material will affect the repair quality of the motor and shorten the service life of the motor after repair.
(7) insulation laminated products, also known as laminated products (laminated boards, rods, tubes, etc.) or laminated plastic. Insulating laminates are insulating materials made of organic fibers or inorganic fibers, cloth as substrates, dipped in different adhesives, and hot pressed (or rolled).
Using different substrates, the amount of dry agent, molding process, can be made into different heat levels, different mechanical, electrical, physical and chemical properties of the products. Electric motors and other electrical equipment used in the laminated products, mainly for insulation structures, such as winding bracket, pad, pad, groove wedge and so on.
Main performance of motor insulation
The main function of the insulating material is to isolate the conductors of different parts in the electrical equipment so that the current can flow in the predetermined direction. Insulation material is the weakest link in electrical equipment, many failures occur in the insulation part, so the insulation material should have good dielectric properties, high insulation resistance and compressive strength; heat resistance is good, and will not be due to long-term heat Causing changes in performance; good moisture, lightning, mildew and high mechanical strength, and easy processing.
Insulation material in the long-term use, in temperature, electrical, mechanical and other aspects of the role of insulation performance will gradually deteriorate, known as the insulation aging. The temperature has great influence on the service life of the insulating material and the aging of the insulation. Therefore, in order to ensure the long-term safe operation of the electrical equipment, the heat-resistant grade and the ultimate working temperature of the insulating material are clearly defined. If the operating temperature of the electrical equipment exceeds the ultimate operating temperature of the insulation material used, the service life of the insulating material is shortened. Generally more than 6 ℃, the life of insulating materials will be shortened by about half.
2. Insulation material types and models
Electrician commonly used insulating material according to its physical state is different, can be divided into gas, liquid, solid three categories. Gas insulating materials such as air, nitrogen, carbon dioxide, sulfur hexafluoride and the like; liquid insulating materials such as transformer oil, capacitor oil, cable oil and other mineral oil and silicone oil, three atmosphere of benzene and other synthetic oil; solid insulation materials according to its application or process Different characteristics, but also can be divided into six categories. In order to fully reflect the type of solid insulation materials, varieties and heat-resistant grades, solid insulation materials using four digits to represent its model. There are many different varieties in the same material, such as the first type of material, 0 for the leaching paint, 2 for the paint, 3 for the enamel, 4 for the viscose and resin, 6 for the silicon steel, If the second type of material, 0,1,2 said cotton fiber paint cloth, 4,5 said glass fiber paint cloth, 6 said the semiconductor paint cloth and adhesive tape, 7 said paint tube, 8 said film, 9 said Film products. For example, 1031 for the J-based phenolic alkyd paint, is B-class; 1032 for the three dihydrogenamine jelly paint, is B-class.
1、Product composition and characteristics
Products from a variety of polymer materials modified polymerization and people, with outstanding leveling, permeability, can quickly cure, the formation of smooth, dense protective layer. Paint insulation performance, "three anti" excellent performance, so that dip electronic, electrical products with excellent moisture, mildew, dust, anti-oil and other characteristics.
2、use
Used in various types of printed circuit board insulation protection; all kinds of electronic devices, the motor coil as a whole impregnated insulation; metal plate, metal frame surface fast anti-rust treatment, brush, spray, dip, easy to operate
3、Special Note
The company strictly in accordance with the relevant product standards to control product quality. Due to the diversity of application conditions and variability and many other factors, it does not rule out the need for user self-test study, the law does not guarantee that some of the performance of a particular product for a specific use, and retain the data to modify the power.
4、Technical Parameters
Due to the more types of mica, in addition to mica outside the other mica products but also in the back of the four digits plus a digit, 1 said powder mica products, 2 said phlogopite products. For example, 5438 a 1 for the epoxy glass powder mica tape, 5450 a 2 for the silicone glass mica tape.
3. Commonly used insulating material
(1) impregnated paint is mainly used for impregnating electric motors and other electrical equipment, coil and insulation components. It is divided into solvent and solvent-free two kinds of solvent impregnation paint is characterized by good permeability, long storage period, easy to use, but the impregnation and drying time is long, slow curing. Need to use solvent; solvent-free impregnated paint is characterized by curing Fast, rapid changes in viscosity with temperature, mobility and permeability, insulation integrity is good, less evaporation process and so on.
(2) Coated lacquered lacquers for coating on the surface of the coil and insulating parts after the lacquer treatment to form a continuous and uniform thickness of the surface insulation to protect the film from mechanical damage and erosion of oil and chemical substances and to improve the surface Discharge voltage, can also be used for motor repair to strengthen the local insulation capacity。
Cover paint is not filled with filler and pigment for the insulating varnish, otherwise insulated enamel. Insulating varnishes are used for the coating of insulating parts surfaces and electrical appliances. Insulating enamels are used for coil and metal surface coating.
Cover the paint with a dry and dry paint. Dry paint the performance of poor, unstable storage, suitable for drying parts of the coverage. The current application of epoxy lacquer is more extensive because it has better moisture resistance, mildew resistance, dryness and stronger film adhesion than alkyd type lacquers
(4) non-impregnated fiber products non-impregnated fiber products, including non-alkali glass fiber cloth, E-glass fiber belt, E-glass fiber casing, E-glass fiber rope, with high heat resistance, water absorption is small, High tensile strength, good electrical performance and so on.
(5) Electroluminescent film and composite product The electric film is a synthetic resin film, such as a polypropylene film, a poly cool film, and the like, and has a thickness of 0.006 to 0.5 mm. It can be used for motor and other electrical equipment winding insulation, with a soft texture, moisture resistance and good mechanical and electrical properties.
Composite material is in the film on one or both sides of a layer of fibrous materials (such as insulating paper, paint cloth, etc.) composed of a composite material, the main role of fiber material is to strengthen the mechanical properties of the film to improve the tensile strength and surface smoothness. It is mainly used for small and medium-sized motor slot insulation, winding end insulation and so on.
(3) impregnated fiber products impregnated fiber products, cotton, cotton fiber tube, thin silk glass fiber cloth (or tube) and glass fiber and synthetic fiber fabric as the substrate impregnated with insulating paint made of insulating varnish, insulation Lacquer tube and tie belt 3 kinds.
① Insulating paint cloth It is mainly used for the insulation of the motor winding, groove insulation and liner insulation.
② Insulated paint tube It is made of the corresponding fiber tube as the substrate, soaked with different insulating paint, made by drying the cotton paint tube, polyester paint tube and glass tube, suitable for motor and other electrical equipment coil lead Or winding connection of the insulation sleeve.
③ banding, also known as no weft belt, is made of long glass fiber by silane treatment and finishing, in the dip with thermosetting resin made of B stage or fully cured ribbon material. According to the type of impregnated paint or resin used, can be divided into polyester-free belt, epoxy-free belt and polyimide imide-type non-latitude and so on. Currently the most widely used is the endless type of ribbon, which is mainly used to band the end of the motor rotor winding, replace the non-magnetic alloy steel wire, steel and other metal.
Xuchang, Henan
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