Method and equipment for manufacturing composite fiber containing continuous glass fiber

Abstract

The invention relates to a method for manufacturing a composite fiber containing a continuous glass fiber. The composite fiber is formed by mutually mixing offline terylene and an online continuous glass fiber; the glass fiber is drawn on line, and the terylene is finished yarn; a plurality of bundles of terylene with different yarn feed angles are drawn to be converged into sheet shapes after being subjected to tension adjustment; and the converged terylene yarn bundles are separated and then compounded with the glass fiber processed with an impregnating compound. The invention has the advantages of simplified process equipment and improved production smoothness; and meanwhile, the introduction of chemical fiber yarn-feed tension adjustment ensures that better practicability and better effect on the baked yarn clew moulding effect are achieved.

Description

technical field [0001] The invention relates to a manufacturing method and equipment for composite fibers containing continuous glass fibers. Background technique [0002] Due to the characteristics of light weight, high strength, electrical insulation and corrosion resistance, the composite materials of glass fiber reinforced resin matrix are widely used in the fields of automobile, aerospace and national defense. In particular, glass fiber reinforced thermoplastic resin matrix composites have developed rapidly in recent years due to their excellent impact toughness, easy repair, secondary molding, and recyclability, gradually replacing some applications of traditional thermosetting resin matrix composites. field. The development of glass fiber reinforced thermoplastic resin matrix composites will provide an excellent alternative to traditional metal materials with light weight and high strength. [0003] The initial glass fiber reinforced thermoplastic resin composition ...

AI Technical Summary

Problems solved by technology

[0003] The initial glass fiber reinforced thermoplastic resin composition is mixed and extruded with glass fiber chopped strands and thermoplastic resin particles, and then injection molded. This method is also called the SFT process. Its main disadvantages are: the glass fiber content is relatively low, and Due to the low effective residual length of the fiber during extrusion and injection molding, the mechanical properties of the final product are not high

In the above forming method, both glass fiber and chemical fiber are drawn on-line, and the process problems in any fiber drawing process will affect the final forming stability of the composite fiber, so the forming of the composite fiber will be complicated; and the glass There are large structural differences between fiber and chemical fiber drawing production lines, and the combined use of the two will also increase the difficulty of assembly of the composite fiber production line

In addition, due to the huge difference in the thermal shrinkage properties of glass fibers and chemical fibers, the dried composite fiber yarn clusters will become fluffy due to the large shrinkage of chemical fibers, resulting in unstable yarn cluster structure and difficult yarn delysis

In order to solve this problem, the above-mentioned patents respectively adopt the methods of overfeeding chemical fibers to form curls and high-temperature heat setting to reduce the shrinkage of chemical fibers to reduce the impact of chemical fiber shrinkage on the stable structure of yarn clusters, but the controllability is not good, the quality fluctuates greatly, and Complex equipment and high cost

Images