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Multi-micropore polyester fiber and preparation method thereof

A polyester fiber, microporous technology, applied in the field of textile fiber and manufacturing, can solve the problems of poor durability, moisture absorption, poor air permeability, limited hydrophilic properties of fibers, etc., and achieve excellent moisture absorption effect

Inactive Publication Date: 2008-03-19
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the field of textiles, polyester fiber has many excellent properties and has the largest output among synthetic fibers. However, polyester fiber is a hydrophobic fiber with poor moisture absorption and air permeability, which leads to a feeling of stuffiness when worn, and it is easy to generate static electricity when the weather is dry. It is uncomfortable to wear, which seriously restricts its application. In order to improve the moisture absorption and breathability of polyester fibers, people often use the method of blending with natural or artificial fibers, but it is very limited to improve the hydrophilic properties of fibers. Another method is Treating fibers or fabrics with surface treatment agents containing hydrophilic groups can also improve the hydrophilicity of polyester fibers, but due to the lack of activation centers inside polyester fibers, the durability is poor, that is, after multiple washings, the hydrophilic performance will fade away

Method used

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  • Multi-micropore polyester fiber and preparation method thereof
  • Multi-micropore polyester fiber and preparation method thereof
  • Multi-micropore polyester fiber and preparation method thereof

Examples

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preparation example Construction

[0020] A preparation method of the above-mentioned microporous polyester fiber, which adopts a water-soluble, water-soluble polymer with excellent hygroscopicity and ionic conductivity as a dissolving component, which is dried and pulverized The 75-85 mesh fine particles are uniformly blended with conventional polyester particles of the same size in a ratio of 30-50%: 70-50%, and extruded and granulated on a twin-screw extruder; the masterbatch has been dried. After melt spinning, stretching, and dissolving the filament in hot water for 55-65 minutes, the dissolution weight loss rate reaches 8-12%, and then it is taken out and dried, so that 20-40% of the water-solubility remains in the fiber. The polymer component has a large number of micropores with a diameter of about 0.5-2um, which are uniformly distributed on the surface and inside, and have excellent moisture absorption and air permeability.

[0021] The present invention adopts a water-soluble polymer that is soluble i...

Embodiment 1

[0029] Example 1: The present invention adopts the dissolution method to prepare the microporous polyester fiber, and the polymer added with the water-soluble modifier is dried and pulverized into 80 mesh fine particles, which are 30%: 70% with the conventional polyester particles of the same size. The proportion is uniformly blended, extruded and granulated on a twin-screw extruder, and the masterbatch containing water-soluble components that has been made is melt-spun and stretched after drying, and the filament is dissolved in hot water at 100 ° C. After 60 minutes, the dissolution weight loss rate reached 10%. It was taken out and dried. The electron microscope test showed that a large number of micropores with a diameter of about 0.5-2um in diameter were generated on the surface and inside of the fiber. Since the fiber still retains 20% hydrophilic It is a water-soluble polymer component with good properties, with a large number of micropores with a diameter of 0.5-2um on ...

Embodiment 2

[0030] Example 2: The invention adopts the dissolution method to prepare the microporous polyester fiber, and the polymer added with the water-soluble modifier is dried and pulverized into fine particles of 85 meshes, which are 50%:50% with the conventional polyester particles of the same size. The proportion is uniformly blended, extruded and granulated on a twin-screw extruder, and the masterbatch containing water-soluble components that has been made is melt-spun and stretched after drying, and the filament is dissolved in hot water at 100 ° C. After 55 minutes, the dissolution weight loss rate reached 8%. It was taken out and dried. The electron microscope test showed that a large number of micropores with a diameter of about 0.5-2um were generated on the surface and inside of the fiber. Since the fiber still retains 40% hydrophilic It is a water-soluble polymer component with good properties, with a large number of micropores with a diameter of 0.5-2um on the surface and i...

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Abstract

The present invention provides a method for preparing hot melt microporous fiber. Raw materials comprise water soluble polymer and regular polyester, after being dried, the raw materials are grounded with a plastic grinder into about 80 to 120 mesh microscopic particles, the water soluble polymer and the regular polyester are uniformly mixed in a mixing machine with the ratio of 30-50 percent to 70-50 percent, then the microscopic particles are made into masterbatchs with 3-5 mm particle diameter with a SJSH-30 twin-screw extruder and a XPLQ-100 cold granulating crusher, after being dried, the masterbatchs are prepared into fiber on a spinning machine, after being draft by 1.5 times, the fiber is dissolved in the hot water with 100 DEG C, after being dried, the weight loss rate of the fibers reaches 10 percent, mill pores with 0.5-2 micronpore diameters are distributed on the surfaces and internal parts, and thus the fiber has high water absorbability and air permeability.

Description

Technical field: [0001] The invention relates to a microporous polyester fiber with a large number of micropores running through the surface and inside and a preparation method thereof, belonging to the technical field of textile fibers and manufacturing. Background technique [0002] In the textile field, polyester fiber has many excellent properties and has the largest output among synthetic fibers. However, polyester fiber is a hydrophobic fiber with poor moisture absorption and air permeability, which leads to a stuffy feeling when wearing it, and it is easy to generate static electricity when the weather is dry. It is uncomfortable to take, which seriously restricts its application. In order to improve the moisture absorption and ventilation functions of polyester fibers, people often use the method of blending with natural or artificial fibers, but it is very limited to improve the hydrophilic properties of fibers. Another method is to Treating fibers or fabrics with s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01D5/08D01D5/247D01D10/00
Inventor 钱建华凌荣根孙福
Owner ZHEJIANG SCI-TECH UNIV
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