Glass mat laminates – UP GM 203 GPO-3
4 week ago
Product details
What is GPO-3 material GPO-3 performance and use ,GPO3 laminate insulation material also known as UPGM-203, is made of alkali-free glass fibre felt impregnated with unsaturated polyester resin paste, and add the appropriate additives by hot-pressing of the rigid board insulation material.GPO3 whole board specifications: 1200X1000X0.8-100mm ,temperature 155 degrees, flame retardant 94- V0, GPO-3 colour: red, white, brownish red.
Glass mat laminates –UP GM 203 / GPO-3
This material is a glass mat laminate based on polyester resin systems, intended for mechanical and electrical applications. It offers excellent electrical insulation properties and a fire rating of UL94-VO. We deliver UP GM 203/GPO-3 as composite sheets and composite tubes.
Characteristics of GPO3 insulating material:
1. Arc resistance (greater than 180 seconds)
2. Excellent resistance to leakage starting trace (CTI 600 volts)
3. Temperature resistance grade: 155 degrees
4. Flame retardant 94-V0 grade 5 Mechanisation, high degree of automation, stable product quality and other characteristics.
GPO-3 insulating materials are used in motors and electrical equipment as insulating structural parts, such as circuit breakers, switchgear, transformers, DC motors, AC contactors, explosion-proof appliances and other low-voltage electrical insulation panels, automotive industry and other fields.
The primary differences between FR4 and GPO3 lie in material composition, temperature resistance, mechanical properties, and application scenarios. FR4 is an epoxy resin glass fiber laminate primarily used as a substrate for electronic circuits; GPO3 is a glass fiber reinforced polyester laminate specializing in high-insulation applications.
Material Composition and Structural Differences
FR4: Laminated from epoxy resin-impregnated glass fiber cloth, featuring a rigid structure reinforced by glass fibers.
GPO3: Manufactured by composite lamination of glass fiber mat and polyester resin, offering more uniform fiber distribution and superior impact resistance.
Insulation board temperature resistance guide: choose the right material, double the safety
Insulation board temperature resistance analysis and selection guide
Insulation board as the core material of industrial manufacturing, its temperature resistance directly determines the safety boundary of the equipment. This paper analyses the technical parameters, material properties and application scenarios in three dimensions to provide a scientific basis for the selection of materials.
First, the temperature resistance level system
material heat resistance is divided into F class (155 ℃, such as epoxy plate), H class (180 ℃, such as silicone 9334 board) and C class (> 180 ℃, ceramic / graphite). The grade corresponds to the upper limit of long-term safe working temperature, short-term over-temperature will accelerate material aging.
Characteristics of mainstream materials
1. epoxy insulation board (F grade): 155 ℃ long-term temperature resistance, both high mechanical strength and dielectric stability, widely used in small and medium-sized motors and high-voltage switches.
2. FR4 board: 130-140 ℃ long-term temperature resistance, glass cloth laminated structure through the UL flame retardant certification, third-party tests show that 130 ℃ thousands of hours after the increase in dielectric loss of only 8%, suitable for consumer electronics PCB substrate.
3. GPO3 board: 120-210 ℃ temperature range, UL V0 flame retardant and arc resistance, commonly used in circuit breakers and motor stator spacer.
4. H-class 9334 board: 180 ℃ long-term temperature resistance, the use of bismaleimide resin, both moisture and corrosion-resistant properties, suitable for transformer spacer.
Third, the core elements of material selection
1. Environmental suitability: high humidity scenarios give priority to epoxy / H-class boards, mechanical shock scenarios recommended GPO3.
2. Quality certification: UL certification (e.g. V0 grade of GPO3) and national standard test reports need to be verified;
3. Processing performance: epoxy/GPO3 support precision machining, ceramic substrates require special equipment.
Fourth, the quality assurance system
professional manufacturers through constant temperature workshop (± 1 ℃ fluctuations), 24-hour temperature and humidity monitoring and the whole process of quality control, to ensure that the temperature fluctuation value of the plate ≤ ± 2%, to provide 0.5-100mm thickness customised services, covering the full range of F / H / C-class demand.
Suggestions for selection:
Home appliance/lighting: F-class epoxy plate is the most cost-effective;
Industrial motor/transformer: H-class plate or GPO3 for both performance and strength;
Extreme high-temperature scenarios: C-class ceramic plate costs 3-5 times the cost of conventional materials, requiring a special numerical control grinding machine (accuracy of 0.005mm) and vacuum sintering process, limited to the use of ultra-high-temperature scenarios, such as rocket nozzles.
Professional selection of materials to ensure the safety of the equipment, accurately match the needs of application scenarios.
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