1haracteristics of High-Quality Mold GelcoatHigh-quality mold gelcoats possess various performance features. In terms of heat resistance, different types of gelcoats, such as epoxy gelcoat (EP), vinyl ester gelcoat (VE), and unsaturated polyester gelcoat (UP), exhibit varying thermal performance

1 Reinforcing MaterialsThe main requirements for reinforcing materials in prepregs are:Good resin wetting properties.Excellent drapability to meet the forming requirements of complex-shaped products.Ability to meet the primary performance requirements of the product.Reinforcing fibers include glass

As the demand for composite materials in the rail transportation industry increases, the layout of international standards is becoming more and more important. While existing standards provide more complete guidance on material performance and safety, future standard-setting needs to be better adapt

The use of composite materials in rail transportation has rapidly increased. Composites are now widely used in structural components, carriages, seats, and interior fittings, significantly reducing weight, improving fuel efficiency, and greatly lowering maintenance costs. Given the wide variation in