Composite large-diameter monofilament with variable cross section and skin core structure as well as manufacturing method and application thereof

Abstract

The invention discloses a composite large-diameter monofilament with a variable cross section and a skin core structure. A core of the composite monofilament adopts a PET (polyethylene terephthalate) resin monofilament subjected to preliminary draft and is uniformly coated with a thermoplastic resin material skin layer, and the cross section of the monofilament is periodically changed in the length direction. The composite monofilament with the variable cross section and the skin core structure sufficiently uses advantages of component materials, that is, by means of the high tensile strength of PET, the composite monofilament has extremely high tensile strength and is endowed with basic mechanical performance, by means of the thermoplastic resin coating layer, the composite monofilament is endowed with required chemical corrosion resistance, hydrolysis resistance or other specific performance of resin, and meanwhile, the cross section in the length direction of the monofilament is periodically changed, so that the surface area of each monofilament is greatly increased, and an extra channel is provided for a fluid by aid of a regular concave-convex surface. The invention discloses a manufacturing method and an application of the monofilament simultaneously.

Description

Technical field [0001] The invention relates to a new type of composite material, in particular to a composite monofilament with a large diameter skin core structure with varying cross-section, a manufacturing method and application thereof. Background technique [0002] New materials and composite materials and their applications in industry and people’s lives have always been one of the key areas of my country’s scientific and technological development plan. The state’s key technical support for the development and industrialization of high-performance fibers and composite materials is the key technology area. Relevant new materials and composite materials are of great significance for promoting the upgrading of products in the fields of energy, transportation, industry, and people's livelihood, as well as energy conservation and emission reduction. [0003] Thermoplastic resins such as polyester (PET), polypropylene (PP), polyamide (PA), modified polyester (PET), polyphenylene s...

AI Technical Summary

Problems solved by technology

The one-component or two-component two-dimensional structure monofilament produced by the traditional monofilament production process is produced by the melt extrusion and drawing process. The limitation of the process itself makes it impossible to make the monofilament into a periodically changing cross-sectional structure in the length direction.

Images