High-strength and high-modulus polyvinyl alcohol fiber and melt spinning method of high-strength and high-modulus polyvinyl alcohol fiber

Abstract

The invention relates to a high-strength and high-modulus polyvinyl alcohol fiber and a melt spinning method of the high-strength and high-modulus polyvinyl alcohol fiber. The method comprises the following steps that polyvinyl alcohol, water and polyatomic alcohol are subjected to full swelling after being uniformly mixed; the polyvinyl alcohol subjected to the full swelling is added into a double-screw-rod extruding machine and is then subjected to full fusion to be extruded, and melt fine flows form a primary fiber after air blowing cooling; and the prepared primary fiber is subjected to the drying by a hot air drying oven, multistage stretching and tense heat setting to form the polyvinyl alcohol fiber. The preparation method of the prepared polyvinyl alcohol fiber has the advantage that through the hydrogen bond compounding among water molecules, polyatomic alcohol and polyvinyl alcohol molecules, the melt spinning and the high-power stretching of the polyvinyl alcohol are realized. The polyvinyl alcohol fiber prepared by the preparation method has the advantages of fiber degree controllability, high strength and high modulus, and can be widely applied to the field of civil engineering concrete.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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AI Technical Summary

Benefits of technology

This patented technique allows for making strong but sturdy materials that can resist damage caused during construction or other uses such as seismic reinforcement. These properties make them ideal candidates for use in building structures where durability against environmental stress factors like rainwater impact should also meet certain standards set forth in various codes worldwide.

Problems solved by technology

This patents describes different ways to make strong or sturdy materials like steel bars, cerams, aluminum hydride hallspaces, laminated fabrics made from these materials, and glass filled epoxy resin composite pipelines. These techniques involve mixing together special types of fibres called metafibrilns, yarn bundles containing multiple twists per unit weight cores, crushing the fibers beforehand without causing damage, while maintaining desired properties over time. Additionally, some existing processes require expensive equipment and consume significant amounts of energy.