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Multi-micropore polyester fiber and preparation method thereof

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

Inactive Publication Date: 2010-06-02
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

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preparation example Construction

[0020] A method for preparing the microporous polyester fiber as described above, which uses a water-soluble polymer with excellent hygroscopicity and ion conductivity as the dissolved component, which is dried and pulverized Fine particles of 75-85 mesh, uniformly blended with conventional polyester particles of the same size at a ratio of 30-50%: 70-50%, extruded on a twin-screw extruder to granulate; dry the prepared masterbatch After melt-spinning and stretching, and dissolving the filament in hot water for 55-65 minutes, the dissolving weight loss rate reaches 8-12%, remove it and dry it, so that 20-40% of the water-soluble fiber still remains in the fiber. The polymer component is uniformly distributed on the surface and inside with a large number of micropores with a diameter of about 0.5-2um and excellent moisture absorption and air permeability.

[0021] The present invention adopts a water-soluble polymer soluble in boiling water at 100°C, which is dried and pulveriz...

Embodiment 1

[0029] Embodiment 1: the present invention adopts stripping method to prepare microporous polyester fiber, the polymer that will add water-soluble modifier is dried and pulverized into 80 purpose fine particles, and conventional polyester particles of the same size by 30%: 70% Blend evenly in proportion, extrude and granulate on a twin-screw extruder, dry and melt-spin and stretch the masterbatch containing water-soluble ingredients, and dissolve the filament in hot water at 100°C After 60 minutes, the dissolution weight loss rate reached 10%, and it was taken out and dried. The electron microscope test showed that there were a large number of micropores with a diameter of about 0.5-2um on the surface and inside of the fiber, because 20% of the hydrophilic fiber still remained in the fiber. It is a water-soluble polymer component with good properties. There are a large number of micropores with a pore size of 0.5-2um on the surface and inside, and it has good moisture absorptio...

Embodiment 2

[0030] Embodiment 2: the present invention adopts stripping method to prepare microporous polyester fiber, will add the polymer of water-soluble modifying agent after drying and pulverize into 85 purpose fine particles, and conventional polyester particles of the same size by 50%: 50% Blend evenly in proportion, extrude and granulate on a twin-screw extruder, dry and melt-spin and stretch the masterbatch containing water-soluble ingredients, and dissolve the filament in hot water at 100°C After 55 minutes, the dissolution weight loss rate reached 8%, and it was taken out and dried, and the electron microscope test showed that a large number of micropores with a diameter of about 0.5-2um were formed on the surface and inside of the fiber, because 40% of the hydrophilic fiber still remained It is a water-soluble polymer component with good properties. There are a large number of micropores with a pore size of 0.5-2um on the surface and inside, and it has good moisture absorption ...

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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 groundedwith 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, themasterbatchs 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 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...

Claims

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Application Information

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