Thermoplastic polyurethane yarn and fabric manufactured therefrom

A thermoplastic polyurethane, raw yarn technology, applied in the manufacture of single-component polyurethane rayon, yarn, rayon, etc., can solve the problems of difficult continuous production lines, slow crystallization speed of thermoplastic polyurethane, and inability to stretch and recover, achieving increased Elongation, the effect of improving stretch and recovery properties

Inactive Publication Date: 2020-11-13
朴喜大
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only that, the fabric woven from the above-mentioned thermoplastic polyurethane raw yarn has the characteristics of not elongating like a woven fabric, that is, it cannot be stretched (stretch) or recovered (recovery).
[0011] In particular, recently, there is a tendency to increase the demand for raw yarns and fabrics that can be stretched and restored while maintaining strong physical properties as the characteristics of thermoplastic polyurethanes. However, when thermoplastic polyurethanes are generally produced, adipic acid (adipic acid) ) of adipate (adipate) is used as a polyol, so the crystallization rate of thermoplastic polyurethane with low hardness (Shore A type) is slow, making it difficult to continue the production line (yarn)

Method used

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  • Thermoplastic polyurethane yarn and fabric manufactured therefrom
  • Thermoplastic polyurethane yarn and fabric manufactured therefrom
  • Thermoplastic polyurethane yarn and fabric manufactured therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] When producing a thermoplastic polyurethane raw yarn, the use of succinate and nano-silica increases the crystallization rate during cooling and stretching, and this will be specifically described as an example.

[0055] Figure 1 to Figure 4 The value obtained by analyzing the crystallization rate (Crystallization rate) by differential scanning calorimetry (DSC) is represented by a graph. Conditions for analyzing the crystallization rate by DSC are as follows.

[0056] 1. Heating from 25°C to 250°C at a rate of 10°C / min (Heating from 25°C to 250°C, Rate 10°C / min).

[0057] 2. Equilibrate for 2 minutes (Equilibrium for 2 minutes).

[0058] 3. Cooling to crystallization temperature, the rate is 10°C / min (Cooling to Crystallization temperature, Rate 10°C / min)

[0059] 4. Isotherm for 15 minutes.

[0060] *Crystallization temperature

[0061] T-90AB, M6, M7: 90°C

[0062] T-75D, M3: 150°C

[0063]In this case, T-90AB is a 90A durometer, 0% succinate, and 61% adipate...

Embodiment 2

[0069] Tables 1 to 6 disclose the mixing ratio of each composition when TPU with a hardness of 75D is used to prepare the thermoplastic polyurethane raw yarn of the present invention. That is, the following table specifically discloses the elongation and processability of thermoplastic polyurethane raw yarns when the succinate content and the nano silica content are adjusted. The elongation of the thermoplastic polyurethane raw yarn was measured to be the same value for both multifilament and monofilament. In this case, the elongation refers to the stretching and recovery function of the thermoplastic polyurethane raw yarn, and the processability refers to the state of yarn spinning during the cooling and stretching process during the melt extrusion process when preparing the thermoplastic polyurethane raw yarn.

[0070] Conventional thermoplastic polyurethane compositions shown in the following tables, specifically, the respective contents of isocyanate (isocyanate) and ethyl...

Embodiment 3

[0088] Table 7 to Table 13 disclose the mixing ratio of each composition when TPU with a hardness of 60D is used to prepare the thermoplastic polyurethane raw yarn of the present invention. That is, the following table specifically reveals the elongation and processability of the thermoplastic polyurethane raw yarn when the succinate ester content and the nano silica content are adjusted.

[0089] Table 7

[0090]

[0091] Table 8

[0092]

[0093] Table 9

[0094]

[0095] Table 10

[0096]

[0097] Table 11

[0098]

[0099]

[0100] Table 12

[0101]

[0102] Table 13

[0103]

[0104] As can be seen from the above Tables 7 to 13, when the hardness of thermoplastic polyurethane is 60D, if less than 5% of succinate is used, it is difficult to produce monofilament yarn and multifilament yarn due to the low crystallization speed. When the content is 5-40%, monofilament yarn and multifilament yarn can be produced smoothly due to the increase of cry...

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Abstract

Disclosed are: a thermoplastic polyurethane yarn in which, in a thermoplastic polyurethane composition composed of isocyanate, glycol, and polyol, succinate is used as polyol, and when the isocyanate,glycol, and succinate are polymerized, a nano-silica having a particle size of 100 nm or less is mixed, and thus a crystallization rate during melt extrusion is increased such that the yarn can be continuously spun without being cut during cooling and drawing processes and has stretch and recovery characteristics; and a fabric manufactured from the yarn.

Description

technical field [0001] The present invention relates to a thermoplastic polyurethane raw yarn comprising polyol, isocyanate, and ethylene glycol, and more specifically relates to continuous spinning using succinate as a polyol. Nano-silica accelerates the crystallization speed during cooling and stretching, ensures continuous spinning without breaking the yarn, and has low hardness with stretch and recovery functions (Shore A type, shore A type) thermoplastic polyurethane raw yarn and fabrics prepared from the above raw yarn. Background technique [0002] Generally, raw yarns used for fabric weaving mainly include polyester, nylon, acrylic resin and the like. Fabrics processed from such raw yarns not only have reduced durability and wear resistance, but also have problems in many aspects such as adhesion, and are not suitable for high-functional applications such as fabrics for uppers of shoes. use. [0003] Recently, in order to solve the above-mentioned problems, studie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/70D03D15/00
CPCD01F1/10D01F6/70C08G18/4238C08G18/3206C08G18/341C08K3/36C08K2201/011C08K2201/005C08L75/04D10B2331/10D03D15/283D03D15/242D10B2401/06D10B2401/041D02G3/045C08L2203/12D10B2101/02
Inventor 朴喜大
Owner 朴喜大
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