Preparation method of aerogel-containing polyester fibers

A polyester fiber and polyester fiber masterbatch technology, applied in the field of clothing fabrics, can solve problems such as poor spinnability, uneven particle size of airgel, and uneven mixing, so as to improve thermal insulation performance and expand a wide range of applications Effect

Pending Publication Date: 2021-02-26
素湃科技(上海)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: in the prior art, the synthetic method of preparing airgel polyester fiber through blending modification has uneven mixing, and the particle size of the airgel itself is not uniform, resulting in poor spinnability

Method used

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  • Preparation method of aerogel-containing polyester fibers
  • Preparation method of aerogel-containing polyester fibers

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preparation example Construction

[0031] A kind of preparation method of airgel-containing polyester fiber provided by the invention comprises the following steps:

[0032] In step 1, the airgel microspheres are uniformly mixed with the PET powder to obtain a mixed powder. Step 1 includes the following subdivision steps:

[0033] 1. Selection of powder:

[0034] a. Select silica airgel microspheres: average particle size 20-80nm, porosity 80%-95%, specific surface area 200-900m 2 / g, apparent density 0.2~0.8g / cm 3 . In a vacuum box, after drying at 60°C for 6 hours, the temperature is raised to 120°C and kept for 2 hours, so that the water content of the airgel microspheres is less than 100ppm.

[0035] Airgel microspheres are microspheres with regular shape and controllable size and porous structure, which essentially have all the advantages of airgel. Silica airgel microspheres are used as fillers for modified polyester fibers It's an excellent solution.

[0036] b. The first PET chip is pulverized, an...

Embodiment 1

[0054] Select silica airgel microspheres: average particle size 60nm, porosity 85%, specific surface area 400m 2 / g, apparent density 0.4g / cm 3 , in a vacuum box, dry at 60°C for 6 hours, then raise the temperature to 120°C for 2 hours, so that the moisture content of the powder is less than 100ppm. Grind PET slices with an average particle size of 10 μm, dry at 60°C for 6 hours, then heat up to 120°C for 4 hours, and fully dry to make the moisture content of the powder less than 100ppm. EVA acts as a dispersant. Choose Antioxidant 1010.

[0055] Calculated in parts by mass, mix 80 parts of PET powder, 20 parts of silica airgel microspheres, 1.5 parts of dispersant, and 0.8 parts of antioxidant, shake in ultrasonic for 0.3h, then stir in a mixer for 1h at a speed of 150r / min to obtain a uniformly mixed powder.

[0056] Mix 30 parts by mass of the above dry mixed powder with 70 parts by mass of PET slices, stir in a mixer for 1 hour at a speed of 200r / min, mix thoroughly a...

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Abstract

The invention provides a preparation method of aerogel-containing polyester fibers. The preparation method comprises the following steps of 1, uniformly mixing aerogel microspheres with polyester powder to obtain mixed powder; step 2, fully mixing the mixed powder with a second polyester chip, extruding and dicing to obtain polyester fiber master batch containing aerogel; and step 3, uniformly mixing the polyester fiber master batch containing the aerogel with a third polyester chip, and then carrying out melt spinning in a spinning machine. The preparation method has the beneficial effects that (1) the aerogel microspheres are selected as the modified filler, the particle size and shape of the aerogel microspheres are controllable, and spinning is facilitated; (2) polyester and aerogel microspheres are subjected to multistage mixing, so that the problem of poor spinnability caused by non-uniform mixing of aerogel-containing polyester fibers is solved, and the spinning quality stability is facilitated; and (3) the prepared aerogel fibers can be used in multiple fields such as textile fabrics, fillers and the like, so that the thermal insulation performance is improved, and the large-range application of the aerogel in the textile field is widened.

Description

technical field [0001] The invention relates to polyester fibers, in particular to a method for preparing airgel-containing polyester fibers, and belongs to the technical field of clothing fabrics. Background technique [0002] Polyethylene terephthalate (PET) fiber is one of the most representative fibers of the polyester fiber family. It has excellent properties such as high strength, high modulus, good shape retention, high dimensional stability and high cost performance. It is an ideal textile It is mainly used to weave fabrics or as fillers to keep warm, and its overall output ranks first among synthetic fibers. Modified polyester fiber is a research hotspot in recent years, and various functional polyester fibers emerge in endlessly. Blending modification technology means that before spinning, functional additives or powder are fully mixed with polyester fiber chips, and melted and blended by heating to make them evenly dispersed in the polymer to produce functional p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/10D01F8/14D01D5/08
CPCD01F6/92D01F1/10D01F8/14D01D5/08
Inventor 严杰张梅张雪黄政清陆海明
Owner 素湃科技(上海)有限公司
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