The main production method of composite photovoltaic frames is
two-component polyurethane+glass fiber extrusion molding.
Pultrusion molding refers to the process of producing composite
profiles by heating continuous fibers or their fabrics impregnated
with resin through molds under the action of traction equipment. It
has the advantages of controllable fiber content, high raw material
utilization rate, and high production efficiency.
The core equipment for polyurethane composite material extrusion
molding includes extrusion equipment, glue injection machine, and
frame mold. The conventional pultrusion production line consists of
a yarn frame, a soaking tank, a shaping mold, a traction device,
and a cutting device. The pultrusion products have advantages such
as lightweight, high strength, and corrosion resistance, and are
widely used in new energy, medical, communication, and power
transmission fields such as construction, transportation, wind
power, and photovoltaics.
Compared to traditional aluminum and metal photovoltaic frames,
polyurethane photovoltaic frames have the following advantages:
1. Polyurethane composite materials have excellent mechanical
properties, and their axial tensile strength reaches more than 7
times that of traditional aluminum alloy materials.
2. It has strong resistance to salt spray and chemical corrosion.
3. Having a high volume resistivity, the photovoltaic modules are
packaged with polyurethane frames, greatly reducing the possibility
of forming leakage circuits and helping to reduce the occurrence of
PID potential attenuation. Improved the power generation efficiency
of the battery panel.
4. Polyurethane frames can also be used in conjunction with
water-based polyurethane coatings, greatly increasing the weather
resistance of the frames and having extremely low VOC emissions.
