High-strength nylon 6 filaments based on one-step drafting process and preparation method of high-strength nylon 6 filaments

A nylon and high-strength technology, applied in the field of high-strength nylon 6 filament and its preparation, can solve the problems of cumbersome solvent removal, complex preparation process, reduced fiber toughness, etc., and achieves improved mechanical properties and processing properties, low initial modulus, high The effect of fiber flexibility
CN110387597AActive Publication Date: 2019-10-29DONGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DONGHUA UNIV
Publication Date
2019-10-29

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Abstract

The invention provides a preparation method of high-strength nylon 6 filaments based on a one-step drafting process. The preparation method is characterized by comprising following steps: step 1, polyol and nylon 6 slices are mixed in proportion, mixed polyol / nylon 6 slices are fed into a twin-screw extruder for melt blending, extruded melt is pelletized by a pelletizer, and polyol modified nylon6 masterbatches are obtained; step 2, the nylon 6 masterbatches obtained in step 1 and the nylon 6 slices are mixed in proportion, the mixture is dried and then subjected to melt extrusion by the twin-screw extruder and enters a spinning manifold, melt is sprayed out through spinneret orifices, then enters a spinning channel and is subjected to air cooling, bundling, oiling, drafting, heat settingand coiling, and the high-strength nylon 6 filaments are prepared. Polyol is added for plasticizing modification of nylon 6, high-strength nylon 6 is prepared with the one-step drafting process, andthe prepared product has excellent thermodynamic properties, higher breaking strength and elongation at break and lower initial modulus.
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Description

technical field

[0001] The invention belongs to the field of chemical fiber preparation, and in particular relates to a high-strength nylon 6 filament based on a one-step drawing process and a preparation method thereof. Background technique

[0002] Nylon 6 (PA6) is polyamide 6, also known as nylon 6. It is a kind of early industrialized nylon material, and its molecular structure is -NHCO(CH 2 ) 5 -, its molecular chain is usually in the shape of random coiled coils, and it is easy to form a folded chain sheet crystal structure when crystallized. It has excellent mechanical properties and is often widely used as a general-purpose plastic. Nylon 6 fiber is the first synthetic fiber material to appear in the world. It has a small specific gravity and has good plasticity, wear resistance and elasticity. Therefore, it is widely used in the fields of textile and clothing as an excellent textile material.

[0003] Patent CN104844795 discloses a high-strength thermally conducti...

Claims

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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