Product Content
Category
Construction Materials-Other Building Materials
Dongguan Xinyu Composite Materials Technology Co., Ltd. produces various special-shaped profiles, including fiberglass round pipes, fiberglass square pipes, fiberglass rectangular pipes, fiberglass round rods, and fiberglass I-beams.
The basic components of pultruded fiberglass profiles are resin and fiberglass (including cloth, felt, etc.). It is reinforced with fibers (including glass fiber, carbon fiber, organic fibers, and other metal and non-metal fibers) and uses resin (mainly epoxy resin, polyester resin, phenolic resin) as the bonding agent, supplemented by other auxiliary materials (main auxiliary materials: release agents, curing agents, catalysts, sealing agents, UV stabilizers, cleaning agents, gel coats, etc.) to form a composite. It possesses a series of excellent characteristics, including high-temperature resistance, corrosion resistance, high strength, low specific gravity, low moisture absorption, small elongation, and good insulation.
**2. Characteristics and Performance**
1. **Good Dimensional Stability**
The thermosetting resin matrix undergoes cross-linking during processing due to heat, forming a network structure. Its products exhibit good dimensional stability under normal conditions, with minimal post-shrinkage after molding. The shape and size change very little under long-term continuous load, indicating low creep. The creep performance depends on factors such as load magnitude, temperature, and loading duration. Under fixed load and temperature conditions, the creep value of thermosetting plastics is much smaller than that of thermoplastics after prolonged loading.
2. **Excellent Heat and High-Temperature Resistance**
Thermosetting resin-based composites cannot be softened once cured. Their heat resistance is quite stable, with a heat distortion temperature generally between 150°C and 260°C when tested under a load of 1.86 MPa. Fiber-reinforced thermosetting plastics are excellent insulating materials, with thermal conductivity generally ranging from 0.35 to 0.47 W/(m·K), which is only 1/100 to 1/1000 of that of metals. They can be used as good thermal insulation materials and for short-term high-temperature applications, with thermal distortion temperatures reaching up to 350°C, making them suitable for both room temperature and high-temperature structural materials. Glass fiber/phenolic resin is an excellent insulating material for rockets and engines.
3. **Excellent Electrical Performance**
Composites are excellent electrical insulating materials. Products made with mica as filler exhibit even better electrical properties and can be used to manufacture special components with arc resistance, voltage resistance, and superior inductive electrical properties. Due to the excellent electrical performance of composites, their products do not suffer from electrochemical corrosion or stray current corrosion, making them widely used in the manufacturing of insulating components in instruments, motors, and electrical appliances to improve the reliability of electrical equipment and extend its service life. Furthermore, the good dielectric properties and microwave permeability of the products under high-frequency conditions have been used to manufacture various radar domes and other high-frequency insulating products.
4. **Outstanding Corrosion Resistance**
The electrochemical corrosion mechanism of resin-based composites is different from that of ordinary steel. They are non-conductive and do not release ions in an electrolytic solution, thus exhibiting good chemical stability against atmospheric conditions, water, and general concentrations of acids, bases, and salts. They particularly demonstrate good stability in non-oxidative strong acids and a wide range of pH values. Therefore, they are widely used to manufacture corrosion-resistant products for certain media (such as carbon dioxide, dilute solutions, sodium hypochlorite, and sulfur dioxide) that stainless steel cannot withstand, proving to be highly effective.
