Zhejiang Yuanda Fiberglass Mesh Co., Ltd. was founded in 2000. It is a technology-oriented manufacturing enterprise focusing on the new materials field, specializing in the research and development and production of composite reinforcing materials, insulating materials, and related intelligent equipment. Committed to providing professional and reliable products and services to customers worldwide. The company is located in the Yangtze River Delta economic Circle of China, close to Ningbo Port and Shanghai Port. The unique geographical location has brought convenience to the company's import and export business. The company covers an area of nearly 33,000 square meters and has modern standard workshops.

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.

In the modern industrial field where the performance limits and reliability of materials are pursued, the selection of reinforcing materials directly determines the final performance of composite material products. Today, we are proud to present its core product - high-performance epoxy glass grid cloth. This product, with its outstanding mechanical properties, excellent chemical stability and outstanding process adaptability, is becoming an indispensable key reinforcing material in high-end composite material fields such as wind turbine blades, shipbuilding, rail transit, building reinforcement and sports equipment, providing a solid guarantee for structural safety and long-lasting durability in various harsh application environments.

Core advantage: Three-dimensional integration, defining a new standard for reinforcing materials

Epoxy glass mesh fabric is not merely a glass fiber fabric, but a professional reinforcing base material treated with special sizing agents and optimized weaving processes. Its core value is reflected in three dimensions:

Outstanding mechanical reinforcement performance

High strength and high modulus: Made from high-quality alkali-free glass fiber yarns, it is precisely woven to form a uniform and stable grid structure, which can effectively disperse and transfer loads, providing extremely high tensile strength and rigidity for composite material products. It is an ideal "skeleton" for withstanding heavy loads and resisting deformation.

Excellent impact resistance and fatigue resistance: The grid structure has a good strain distribution capacity, which can absorb and disperse impact energy, significantly enhancing the impact toughness of the product. Meanwhile, its excellent interfacial bonding force with the epoxy resin matrix ensures the fatigue resistance of the composite material under long-term dynamic loads.

Outstanding environmental adaptability and durability

Outstanding corrosion resistance: It has extremely strong resistance to most acids, alkalis, salts and other chemical media, does not rust or corrode, and is especially suitable for corrosive environments such as Marine environments (ships, offshore platforms), chemical storage tanks, and sewage treatment facilities.

Excellent dimensional stability: The coefficient of thermal expansion is well matched with that of epoxy resin, and it is less likely to generate internal stress during the curing process and temperature changes, ensuring precise dimensions and stable shapes of the products, and preventing warping and deformation.

Excellent electrical insulation performance: It has good electrical insulation characteristics and is suitable for reinforcing electrical equipment components, insulation boards and other fields.

Excellent process adaptability

Perfect match with epoxy resin: The dedicated sizing agent ensures excellent wettability and adhesion to the epoxy resin system. The resin is easy to penetrate, and the interface is firmly bonded after curing, without white threads or delamination.

Good covering property and operability: The fabric is soft and flexible, and can well fit the complex mold shapes. It is suitable for various forming processes such as hand lay-up, vacuum introduction, and compression molding. The construction is convenient and efficient.

Wide application: Empowering thousands of industries and building a safe future

The application of epoxy glass mesh fabric is playing a key role in multiple fields that are crucial to the national economy and people's livelihood as well as the cutting-edge of science and technology

In the field of new energy wind power: As the core reinforcing material for the main beam, shell and key parts of wind turbine blades, its high strength and light weight characteristics directly affect the wind capture efficiency, structural safety and service life of the blades, and are the foundation for promoting the development of large-scale and lightweight wind turbine blades.

In the field of transportation: It is used in high-speed train bodies, subway components, bus bodies, special vehicles, as well as ship hulls and decks. It can significantly reduce weight, enhance strength, and improve corrosion resistance, contributing to energy conservation, emission reduction, and safe operation.

Construction engineering and reinforcement: In the reinforcement and repair of concrete structures, epoxy glass mesh fabric is used in combination with epoxy structural adhesives to form a high-performance composite material reinforcement layer, which can significantly enhance the load-bearing capacity, seismic resistance and aging resistance of the structure. The construction is fast and does not affect the appearance of the original structure.

Sports, leisure and industrial equipment: It is used to manufacture high-performance racing boats, windsurfing boards, poles, safety helmets, amusement equipment, as well as various corrosion-resistant storage tanks, pipes, environmental protection equipment, etc., meeting the ultimate pursuit of lightness, high strength and durability.

Industry leadership and continuous innovation

The successful research and development and large-scale application of epoxy glass mesh fabric reflect the profound technical accumulation in the field of advanced reinforcing materials and the precise grasp of market demands. The company adheres to a strict quality control system, from raw material selection to weaving treatment, to ensure the stable and reliable performance of each roll of products.

The reinforcing materials we understand are not only physical reinforcement but also an empowerment of the value and safety commitment of our customers' products. Our epoxy glass mesh fabric is designed to provide the most reliable solutions for the most demanding application scenarios.

Facing the trend of the composite materials industry towards high performance, multi-functionality and green development, we will continue to invest in research and development, optimize the product series, and develop more targeted epoxy glass mesh fabric products (such as higher modulus, thinner weight, special coatings, etc.). We will join hands with partners in the industrial chain to jointly promote the innovative development of downstream application fields. Contribute to building a safer, more efficient and more sustainable industrial future.

Regarding epoxy glass mesh fabric

Epoxy glass mesh fabric is a reinforced fabric made from alkali-free glass fiber yarn as raw material, treated with special weaving methods and sizing agents, and specially designed for use in conjunction with epoxy resin systems. It has a regular grid structure, and its main function is to be embedded in composite materials, providing the main mechanical load-bearing capacity and improving the impact resistance, fatigue resistance and dimensional stability of the composite materials. It is the core skeleton material of high-performance composite material products.

As the core foundation for ensuring the safe, stable and efficient operation of power equipment, the technological innovation of insulating materials has attracted much attention. Today, its independently developed Diamond Dot Pattern Insulation Paper (DDP for short) has achieved large-scale production and successful application. With its revolutionary structure and performance, it has brought a revolutionary insulation solution to high-voltage electrical equipment such as transformers and reactors. It marks a major breakthrough for our country in the field of high-end insulating materials.

Technical core: Unique diamond-shaped dispensing structure, reshaping the boundaries of insulation performance

Traditional insulating paper mainly relies on uniform impregnation or coating processes, while the innovation of rhombic dot matrix insulating paper (DDP) lies in the precisely constructed micro-rhombic dot matrix adhesive layer on its surface. This unique design is achieved through cutting-edge automated dispensing technology, with the size, spacing and distribution of each dispensing dot precisely calculated and optimized. Its core advantages are reflected in:

Outstanding electrical insulation performance: The rhombic lattice structure can more effectively "lock" insulating oil (or resin), forming a stable and uniform composite insulation system. The dispensing area enhances the local dielectric strength, while the non-dispensing area ensures the full penetration and flow of insulating oil. Overall, it significantly increases the breakdown voltage, partial discharge initiation voltage and arc resistance of the product, providing a more reliable safety barrier for the equipment under extreme voltage conditions.

Optimized heat dissipation and mechanical performance: The rhombic lattice does not fully cover, retaining a large number of microchannels between the paper-based fibers, which greatly improves the circulation and fluidity of insulating oil (or cooling medium), thereby significantly enhancing the heat dissipation efficiency of the equipment, helping to reduce the operating temperature rise and extend the equipment's service life. Meanwhile, precise dispensing provides enhanced support at key positions, improving the mechanical strength and dimensional stability of the material, and enabling it to better adapt to mechanical stress during coil winding and thermal expansion and contraction during operation.

Enhance impregnation efficiency and process adaptability: The unique lattice structure guides the insulating impregnating agent to be oriented and penetrate rapidly, reducing the impregnation dead corners or bubbles that may occur in traditional materials, shortening the impregnation and drying time for equipment manufacturing, and improving production efficiency. It shows good compatibility with different impregnating agents (such as oil, epoxy resin, etc.) and has a wider process window.

Application value: Brings multi-dimensional improvements to power equipment

The successful application of rhombic dot adhesive insulating paper (DDP) has directly benefited the core equipment of the power industry chain:

Higher safety and reliability: It provides unprecedented insulation safety guarantees for key equipment such as ultra-high voltage, large power transformers, transformers in the new energy field (such as wind power and photovoltaic inverters), and traction transformers, reducing the risk of faults and ensuring the stability of the power grid.

Equipment compactness and energy efficiency improvement: With excellent insulation and heat dissipation performance, it allows for the design of more compact coil structures under the same insulation grade, or the pursuit of higher voltage levels and power densities under the same size, facilitating the miniaturization and lightweighting of equipment. Meanwhile, the optimized heat dissipation helps to reduce the operational wear and tear of the equipment and improve energy utilization efficiency.

Extending the service life of equipment: Better thermal management and mechanical stability slow down the aging rate of insulating materials, which is expected to significantly extend the service life of power equipment and reduce the maintenance and replacement costs throughout the entire life cycle.

Industry impact and Future outlook

The launch of rhombus dispensing insulating paper (DDP) not only fills a gap in the domestic high-end customized insulating materials field, but also holds strategic significance for promoting the technological upgrade of global power equipment and meeting the urgent demand for high-performance insulation in emerging fields such as smart grids, new energy grid integration, and the electrification of rail transit.