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Process for the preparation of a fiber, a fiber and a yarn made from such a fiber

A fiber and fiber-forming technology, applied in the field of fiber preparation, can solve the problem of not providing fiber parameters and the like

Active Publication Date: 2016-03-30
FURANIX TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the resulting material, no fiber-related parameters are provided

Method used

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  • Process for the preparation of a fiber, a fiber and a yarn made from such a fiber
  • Process for the preparation of a fiber, a fiber and a yarn made from such a fiber
  • Process for the preparation of a fiber, a fiber and a yarn made from such a fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A sample of polyethylene-2,5-furandicarboxylate (hereinafter referred to as "PEF") having a weight-average molecular weight Mw of 75,600 (corresponding to an intrinsic viscosity of 0.74 dl / g) was passed through 48°C at a temperature of 260°C. - Orifice spinneret melt spinning, the weight average molecular weight of which is determined by GPC using polystyrene standard substances. Cool the melt and spin. 48 filaments were combined into a yarn having a linear density of 115 tex, corresponding to a linear density of 2.40 tex / filament. The fracture toughness was 96 mN / tex and the elongation to break was 239% (both determined according to ISO 5079-1995). The yarn is stretched (drawn) to different draw ratios at different draw temperatures as spinning. The yarn had an IV of 0.67 dl / g, corresponding to a weight average molecular weight of 66,400. The resulting linear density / filament, fracture tenacity and elongation at break are shown in Table 1 below.

[0042] Table 1

...

Embodiment 2

[0046] The same polymer used in Example 1 was subjected to a two-step stretching (stretching) process. First, the polymer composition was melt-spun in the same manner as in Example 1. The resulting yarn was then preliminarily drawn at 85°C to a draw ratio of 2.5. In the second stage, the initially drawn fibers are further drawn to different final draw ratios in an oven heated to 125°C or 130°C. Tenacity and elongation were again determined for each of the resulting yarns. The results are shown in Table 2.

[0047] Table 2

[0048]

[0049]

[0050] The results show that after the first stretching step at a relatively low temperature, a second step at a higher temperature can be carried out, wherein said temperature change in the second step in the region of 125°C to 130°C is hardly effective. effect.

Embodiment 3

[0052] The same polymer used in Example 2 was used and melt spun in the same manner. In a first step, the spun fiber was drawn at 90°C to a first draw ratio of 2.4. The initially drawn fibers were then passed over a hot plate maintained at 100°C and further drawn to a final draw ratio in the range of 3 to 3.6. Table 3 shows the results of these tests.

[0053] table 3

[0054]

[0055] The results show that the tenacity of the resulting fibers increases when the stretching temperature in the second step is also at most 100°C. The yarn exhibits a melting point of 204°C-210°C. Yarn of Run No. 23 had a crystallinity of 14 J / g as determined by differential scanning calorimetry (DSC) from the net enthalpy of fusion. The crystallinity of the yarn of test number 26 was 30 J / g.

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Abstract

A fiber comprising polyethylene-2,5-furan-dicarboxylate, is prepared by melt spinning in a process wherein a molten composition comprising polyethylene-2,5-furan-dicarboxylate having an intrinsic viscosity of at least0.55 dl / g, determined in dichloroacetic acid at 25 DEG C, is passed through one or more spinning openings to yield molten threads; wherein the molten threads are cooled to below the melting temperature of the composition to yield spun fibers; and wherein the spun fibers are drawn to a linear density in the range of 0.05 to 2.0 tex per fiber. The invention also proves a fiber comprising polyethylene-2,5-furan-dicarboxylate having a linear density of 0.05 to 2.0 tex, wherein the polyethylene-2,5-furan-dicarboxylate has an intrinsic viscosity of at least0.45 dl / g, determined in dichloroacetic acid at 25 DEG C.

Description

technical field [0001] The present invention relates to methods for preparing fibers, fibers and yarns made from such fibers. In particular, the present invention relates to a method of making fibers comprising polyethylene-2,5-furan-dicarboxylate ("PEF") by melt spinning. Background technique [0002] 2,5-Furan-dicarboxylic acid ("FDCA") is a natural diacid produced in the human body. WO2010 / 132740, WO2011 / 043660, WO2011 / 043661 and US2012 / 0302768 reported the use of 2,5-disubstituted furans such as 5-hydroxymethylfurfural or 5-alkoxymethylfurfural with Co, Mn and / or Or Ce catalysts to prepare its way. This diacid is considered a suitable monomer for the preparation of polyesters such as polyalkylene-2,5-furandicarboxylates. Examples of the preparation of such polyesters have been described in US2009 / 0124763. Such polyesters have the disadvantage of being prone to unintentional coloring. This is consistent with the color of polyesters described in other prior art docume...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/00D01F6/62
CPCD01D5/08D01F6/62D06P3/52D01F6/84D01F6/94D01D5/088D10B2321/021D10B2331/04D10B2401/06
Inventor 杰弗里·约翰·科尔斯塔赫拉尔杜斯·约翰内斯·马里亚·格吕特尔
Owner FURANIX TECH BV
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