FRP base fabric:
FRP base cloth (excluding heavy woven fabrics and chopped strand mats) is one of the specific glass fiber products used for manufacturing fiberglass-reinforced plastic (FRP) in a certain country at present. Taking a domestic factory as an example, the annual output of FRP products using FRP base cloth as a reinforcing material has reached over 1,000 tons. With the development of the FRP industry, higher requirements have been put forward for the variety and quality of FRP base cloth.
The quality of FRP base cloth includes multiple aspects such as glass composition, appropriate filament count, sizing agent type, yarn ply, yarn twist, fabric structure, and good fabric appearance quality. This article presents some views on factors that have a significant impact on FRP performance and production costs, such as appearance quality, fabric structure, and resin compatibility.
Current Overview of Global FRP Base Cloth Applications: Currently, the main types of glass fiber products used as FRP reinforcing materials overseas are untwisted roving, chopped strands, various mats, woven roving, and non-woven materials. For instance, non-woven materials account for approximately 65% of the total output of continuous fibers in the United States. In Japan, non-woven materials dominate, accounting for 90% of the total output as early as 1975. FRP base cloth is only used in the production of FRP products such as electrical insulation sheets, pipes, and laminates that require high strength.
With the development of the FRP industry in the aforementioned country, the proportion of glass fiber used in FRP manufacturing has gradually increased, reaching around 40% of the national total glass fiber output in 1983. According to surveys, there are more than 30 types of glass fiber products in the country, with nearly 200 specifications and grades (including unified enterprise standards), among which 40 are officially included in the ministerial standards. Among these, FRP base cloth has approximately 7 to 8 types. Chopped strands, various reinforcing mats, and other products either lack standards or are still in the trial production stage.
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