GWT ®

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GWT ®
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GWT thermoplastic composite sheet is a novel polypropylene composite material reinforced with glass fiber cloth. A special process ensures excellent impregnation of the polypropylene with the glass fiber cloth, allowing for secondary thermoforming. Featuring lightweight, high-strength, and environmentally friendly properties, it can directly replace FRP and sheet metal. This product can be produced continuously and supplied in rolls. It is suitable for applications in the automotive, logistics, sports and leisure, and construction sectors.
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Fiberglass Sheet
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Description

Hangzhou Holycore Composite Material Co., Ltd. is one of the most reliable manufacturers and suppliers of gwt ® in China. Please feel free to buy custom gwt ® made in China here from our factory. If you have any enquiry about quotation, please feel free to email us.

 

 Mechanical Properties Parameters of GWT Sheet

 

Thickness Specific Gravity Reference Standard Performance Indicator Value
2.0 1.5 GB/T 1447-2005 Elastic Modulus (GPa) 11.74
Tensile Strength (MPa) 291.5
GB/T 1449-2005 Elastic Modulus (GPa) 13.43
Flexural Strength (MPa) 274.85
GB/T1843-2008 Impact Strength (kJ/m²) ≥150

 

GWT Aging Resistance Test


Test Method: Several groups of specimens were subjected to heat aging in an oven set at 110°C for 500 hours (equivalent to five years under natural conditions). The average value was then recorded.

 

Thickness(MM) Specific Gravity Reference Standard Performance Indicator Before Aging After Aging
2.00 GB/T1447-2005 Tensile Elastic Modulus (GPa) 11.74 12.10
Tensile Strength (MPa) 291.5 288
GB/T 1449-2005 Flexural Elastic Modulus (GPa) 13.43 11.00
Flexural Strength (MPa) 274.85 254.47

 

Test for Tensile Properties of GWT Sheet after 100 Hours of UV Aging

 

Test Parameters Reference Standard
Light Source Irradiance Cyclic Parameters Temperature Test Cycle GB/T 16422.3-1997
UV340 0.76W/m3 Irradiation Time: 8 hours Irradiation: 60 ± 3 °C 100h
Condensation Time: 4 hours Condensation: 50 ± 3 °C

 

Test Results

Standard Indicator Before UV Aging After UV Aging
GB/T1447-2005 Tensile Strength (MPa) 291.5 257
Tensile Modulus (GPa) 11.74 11.44

 

GWT Product Specifications

 

Standard Dimensions Thickness (mm) Width (mm) Length (m)
Supplied in Rolls 0.5~3 1100~2800 ≤1000

 

GWT Application
 

GWT® in Trailer Skirts

GWT® technology significantly upgrades trailer skirts through high-performance material innovation. Constructed from ultra-high-precision 6060-T66 aluminum extrusions, the skirt structure combines high strength and toughness to withstand the complex road conditions of long-distance transport. Its ultra-weatherable metal powder coating provides excellent corrosion and UV resistance, effectively protecting it from harsh environments such as acid rain and high temperatures. Its unique multi-cavity thermal insulation strip design not only optimizes aerodynamic performance and reduces wind resistance caused by turbulent airflow under the trailer, but also reduces heat conduction losses through its vertical isothermal structure. Compared to traditional skirts, this design further improves fuel efficiency while meeting the stringent aerodynamic requirements of the California Air Resources Board (CARB). Combined with technologies such as low rolling resistance tires, it delivers significant energy savings for long-haul trucks while extending the skirt's service life and reducing maintenance costs.

 

 

GWT® in Cooler Sheets
In the cold chain transportation sector, GWT® Cooler Sheets redefine the standard for efficient temperature control with their superior thermal insulation. Leveraging multi-cavity insulation strips and a three-glass, two-cavity hollow structure, their thermal conductivity is significantly lower than the industry standard of 0.045 W/(m・K), effectively blocking external heat intrusion. The ultra-weather-resistant surface coating not only blocks 99.9% of UV rays but also utilizes a specialized process to eliminate condensation corrosion, ensuring structural stability in extreme temperature ranges from -20°C to 40°C. Compared to traditional ice sheets or gel cooling materials, GWT® cooling plates feature a lightweight design (weighing over 30% less than products of the same volume). Their hollow core, filled with inert gas, achieves long-lasting constant temperature maintenance. Combined with the high airtightness of the sealing strips, they can control temperature fluctuations within refrigerated containers to within ±2°C, significantly reducing energy losses during cold chain transportation and providing reliable temperature protection for perishable goods such as fresh produce and pharmaceuticals.

 

FAQ

 

1. What is GWT Thermoplastic Composite Sheet?

 

GWT thermoplastic composite sheet is a polypropylene-based composite material reinforced with glass fiber cloth. Through a special process, the polypropylene is thoroughly impregnated into the glass fiber, creating a lightweight, high-strength, and environmentally friendly material. It allows for secondary thermoforming, making it versatile for various manufacturing processes.

 

2. What are the main features and advantages of GWT Composite Sheets?

 

Lightweight and strong – Combines polypropylene and glass fiber for high strength-to-weight ratio.

Thermoformable – Can be heated and reshaped without losing structural integrity.

Environmentally friendly – Made from recyclable polypropylene, reducing environmental impact.

Continuous production – Available in rolls for large-scale industrial applications.

FRP and metal replacement – Offers a more flexible, lightweight, and cost-effective alternative to traditional materials.

 

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