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BEIHAI YUEDA FRP PRODUCTS
Analysis of Pultrusion Product Applications and Molding Processes
Release time:
2019/09/10
Pultrusion is a method for the continuous production of composite material profiles. It involves the resin impregnation of non-twisted glass fiber roving and other continuous reinforcement materials, such as polyester surface mats, on a yarn rack. The impregnated materials are then shaped using a forming mold that maintains a specific cross-sectional shape, and after curing within the mold, they are continuously extruded, resulting in an automated production process for pultruded products. There are many forms of pultrusion processes and various classification methods, such as batch and continuous, vertical and horizontal, wet and dry, track-based traction and clamping traction, in-mold curing and out-of-mold curing, with heating methods including electric heating, infrared heating, high-frequency heating, and microwave heating.
Pultrusion is a method for the continuous production of composite material profiles. It involves the resin impregnation of untwisted glass fiber roving and other continuous reinforcement materials, polyester surface mats, etc., followed by continuous molding through a forming mold that maintains a certain cross-sectional shape, and curing within the mold to produce pultruded products in an automated production process.
There are many forms of pultrusion molding processes, and various classification methods exist. For example, intermittent and continuous, vertical and horizontal, wet and dry, track-type traction and clamping-type traction, in-mold curing and out-of-mold gel curing, with heating methods including electric heating, infrared heating, high-frequency heating, microwave heating, or combined heating.
The typical process flow of pultrusion molding is as follows:
Arrangement of glass fiber roving- Resin impregnation-Preforming-Extrusion molding and curing-Traction-Cutting-Products
The application range of pultruded products is very broad, including the following aspects:
1Electrical market
This is the earliest market for pultruded fiberglass applications. Currently, successfully developed products include: cable trays, ladder racks, supports, insulated ladders, transformer isolation rods, motor slot wedges, streetlight poles, railway third rail protective plates, optical fiber cable core materials, etc.
2Chemical and anti-corrosion market
Chemical anti-corrosion is a major user of pultruded fiberglass, with successful applications including: fiberglass sucker rods, cooling tower supports, offshore oil extraction equipment platforms, walking grids, stair handrails and supports, structural supports in various chemical corrosive environments, water treatment plant covers, etc.
3Construction market
In the construction market, pultruded fiberglass has penetrated the market for traditional materials, such as: doors and windows, concrete formwork, scaffolding, stair handrails, partition wall panels, reinforcement materials, decorative materials, etc. It is worth noting that reinforcement materials and decorative materials will have significant growth potential..
4,Consumer entertainment market
Currently developed applications include: fishing rods, tent poles, umbrella frames, flagpoles, tool handles, lamp posts, railings, handrails, stairs, radio antennas, yacht docks, garden tools and accessories.
5Road traffic market
Successfully applied products include: highway guardrails, road signs, pedestrian overpasses, sound barriers, refrigerated vehicle components, etc.
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