Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Nylon fiber and manufacturing method of nylon

A nylon fiber and fiber technology, which is applied in the direction of single-component copolyamide rayon, can solve the problems of limiting the applicability of nylon fibers, unable to meet the needs of products, and high melting point, so as to increase the glass transition temperature and improve the spinning. Processing workability and the effect of improving fiber strength

Active Publication Date: 2020-06-30
TAIWAN TEXTILE RESEARCH INSTITUTE
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the melting point of most nylon fibers is generally high at present, which limits the application of nylon fibers and makes them unable to meet the needs of various products.

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Nylon fiber and manufacturing method of nylon
  • Nylon fiber and manufacturing method of nylon
  • Nylon fiber and manufacturing method of nylon

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0029] Experimental example 1: Synthesis of nylon and testing its properties

[0030] In this experimental example, 45 molar parts to 55 molar parts of caprolactam, 45 molar parts to 55 molar parts of hexamethylenediamine, 15 molar parts to 30 molar parts of adipic acid, 15 molar parts to 25 molar parts of decane Acid and 2 to 15 moles of benzene ring diacids are copolymerized to form nylon. In Examples 1 to 4, different combinations of reactants and different molar ratios of the reactants were selected for property testing. Comparative Example 1 is commercially available nylon with a low melting point. Please refer to Table 1 below for the initial melting points and glass transition temperatures of the reactants used in the examples and comparative examples and the products formed.

[0031] Table I

[0032]

[0033] In this experimental example, the properties of the products of Examples 1 to 4 and Comparative Example 1 were tested by differential scanning calorimetry (...

experiment example 2

[0034] Experimental example 2: rheological experiment

[0035] In this experimental example, the products of Example 2, Example 3 and Example 4 were analyzed by rheological experiments at a temperature of 250° C. Observe the viscosity of each product at different shear rates. Please refer to Table 2 below for the experimental results.

[0036] Table II

[0037]

[0038] It can be seen from the above Table 2 that when the shear rate is small, the viscosity of Embodiment 2, Embodiment 3 and Embodiment 4 is relatively large; on the contrary, when the shear rate is large, for example, the shear rate is 6000 to 10000 (1 / s) , Embodiment 2, Embodiment 3 and Embodiment 4 still have a viscosity of at least about 40 to 80 Pas. Since the shear rate usually reaches 6,000 to 10,000 (1 / s) during the spinning process, the above results show that the nylon of the present invention can meet the material requirements for melt spinning.

experiment example 3

[0039] Experimental Example 3: Drying Test

[0040] In this experimental example, common nylon 6 (PA6) and the products of Examples 1 to 4 were analyzed by dry test. Please refer to Table 3 below for the experimental results.

[0041] Table three

[0042]

[0043] Before nylon molding, it is usually necessary to dry the nylon particles to a moisture content of less than 0.1%, and then proceed to the melt spinning process. Generally, the drying time of the drying procedure is about 12 hours and the drying temperature is about 80°C to 90°C. According to the results in Table 3 above, it shows that the nylon of the present invention can be dried through the normal drying procedure without resetting the parameters of the drying procedure.

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
Login to View More

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention relates to a nylon fiber. The nylon fiber comprises a repeating unit derived from caprolactam, a repeating unit derived from hexamethylenediamine, a repeating unit derived from adipic acid, a repeating unit derived from sebacic acid and a repeating unit derived from benzene ring-containing diacid. The content of the repeating unit derived from caprolactam is 45-55 parts by mole. Thecontent of the repeating unit derived from hexamethylenediamine is 45-55 parts by mole. The content of the repeating unit derived from adipic acid is 15-30 parts by mole. The content of the repeatingunit derived from sebacic acid is 15-25 parts by mole. The content of the repeating unit derived from benzene ring-containing diacid is 2-15 parts by mole. The repeating unit derived from benzene ring-containing diacid comprises a repeating unit derived from terephthalic acid or a repeating unit derived from isophthalic acid. The nylon fiber has good spinnability and strength and a low melting point. When the nylon fiber and other fibers form a fabric, the other fibers can be bonded to improve the structural strength of the fabric.

Description

technical field [0001] The invention relates to a nylon fiber and a method for making nylon, and in particular to a nylon fiber with a low melting point and a method for making nylon. Background technique [0002] Since the advent of nylon fiber, it has been used in various fabrics and clothing. However, the melting point of most nylon fibers is generally high at present, which limits the applicability of nylon fibers and makes them unable to meet the needs of various products. In view of this, there is an urgent need to develop other nylons to make nylon fibers, so as to change the properties of nylon fibers to meet the needs of various products. Contents of the invention [0003] The purpose of the present invention is to provide an improved nylon fiber, which has good spinnability, strength and low melting point, so that it can basically overcome the defects of the prior art and can meet the needs of various products. [0004] The present invention provides a nylon fi...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/80
CPCD01F6/80
Inventor 林炜翔刘昭晖黄柏勋安大中林维朋
Owner TAIWAN TEXTILE RESEARCH INSTITUTE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com