Today, "Liqiang New Materials" officially launched its new generation of high-performance Glass Fiber Unidirectional Tape (commonly known as pre-impregnated tape) series products. This product, with its unique unidirectional high-strength, wrinkle-free and flat structure, and precisely controllable curing performance, is becoming the preferred solution to replace traditional binding materials and enhance the structural integrity and insulation reliability of key equipment such as motor armatures, transformer cores, high-voltage bushings, and aerospace components.
Technical core: Directional enhancement, precise and reliable
Glass fiber non-woven tape is not an ordinary woven tape, but a strip pre-impregnated material made by impregnating continuous and parallel-arranged high-strength alkali-free glass fibers in a specially formulated epoxy resin or polyester resin system. Its core technological advantages are reflected in three major aspects:
Extremely high unidirectional mechanical strength: The structure of unidirectional parallel arrangement of fibers enables the product to have extremely high tensile strength (usually exceeding 1000 MPa) and modulus in the fiber direction (longitudinal). When used as a binding material, it can provide a powerful and uniform circumferential binding force, effectively resisting the stress caused by high-speed rotational centrifugal force, short-circuit electrodynamic force or temperature changes, and preventing the coil from loosening or the core from deforming.
Smooth and free of overlapping patterns, with excellent insulation performance: Compared with woven tape, the surface of non-woven tape is smooth and flat, without interweaving points of warp and weft. This feature brings multiple benefits: it forms a dense and uniform insulating layer after curing, with a low level of partial discharge and high electrical insulation strength. After binding, the shape is smooth and regular, which is conducive to subsequent insulation treatment or equipment miniaturization design. It is in close contact with the coil or core, providing a better heat dissipation path.
The curing process is flexible and controllable: Depending on the different resin systems impregnated, two major types of products are provided: thermal curing (B-stage) and wet curing (instant curing). Heat-cured unwoven tape features a long storage period and rapid curing through heating during use, making it suitable for automated production lines. The wet method without weft tape is easy to operate and has stronger on-site adaptability. All products undergo precise control of resin content and fluidity to ensure a stable and consistent curing process with little or no volatile matter, forming a strong and chemically resistant whole.
Key application: Reliable guardian from the ground to the sky
The application of fiberglass unweft tape precisely targets fields with extremely high requirements for structural stability and insulation reliability:
Motor manufacturing: As the binding and fixing material for the end and slot of the armature winding in steam turbine generators, large electric motors, traction motors, etc., it is the "safety sinew and bone" that withstands high-speed, high-temperature and complex electromagnetic forces, directly related to the operational safety and service life of the motor.
Power transformers and reactors: Used for binding core columns and yokes, they provide strong binding force to suppress core vibration noise and prevent short circuits between iron chips. It is also used for wire fixation and reinforcement, enhancing the overall mechanical strength.
High-voltage electrical equipment: It is used to manufacture high-strength insulating cylinders, pull-out rods, bushing cores, etc., serving as a load-bearing framework to achieve insulation and structural integration, meeting the working conditions of high voltage and large mechanical loads.
Aerospace and high-end equipment: In fields such as structural components of aircraft and satellites, and rocket engine casings, it is used as a pre-impregnated form of high-performance composite materials to achieve lightweight and high strength of components.
Industry Value: From "Binding Firmly" to "Binding Excellently
The launch of the new generation of unwoven tape products by "Liqiang New Materials" marks the evolution of the binding process for core equipment such as motors and transformers from meeting basic functions to pursuing higher performance, higher efficiency and higher consistency. By adopting high-quality raw materials, precise impregnation processes and full-process quality monitoring, this series of products ensures a high degree of consistency in tension control, resin content and curing characteristics for each roll of weft tape, providing a solid foundation for the automated production and product quality stability of downstream customers.
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