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Bacteriostatic high-strength high-modulus polyethylene colored fiber and preparation method thereof

A high-strength, high-modulus, colored fiber technology, applied in the direction of dyeing method, fiber chemical characteristics, single-component polyolefin rayon, etc., can solve the problem of single function of ultra-high molecular weight polyethylene fiber, poor mechanical properties of multi-functional fiber, mixed inequality problem

Active Publication Date: 2021-07-30
浙江理工大学上虞工业技术研究院有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above method adds antibacterial particles or colored particles to the spinning stock solution to prepare antibacterial UHMWPE fibers or UHMWPE colored fibers. The process flow is simple and the production cost is low, but the obtained ultra-high molecular weight polyethylene fibers have a single function
In order to make the fiber have multiple properties at the same time, when adding multiple functional materials into the system, since the particles are all inorganic particles, there is uneven mixing, which leads to the problem of poor mechanical properties of the multifunctional fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The invention provides a method for preparing a bacteriostatic high-strength high-modulus polyethylene colored fiber, comprising the following steps:

[0027] Mix ultra-high molecular weight polyethylene, antibacterial particles and spinning solvent, swell and dissolve to obtain spinning solution;

[0028] The spinning solution is extruded and bundled in a coagulation bath to obtain jelly filaments;

[0029] extracting and drying the jelly filaments to obtain a fiber precursor;

[0030] The fiber precursor is immersed in the dye bath, and after being taken out, super-stretching, heat setting and rolling are carried out in sequence to obtain the antibacterial high-strength high-modulus polyethylene colored fiber.

[0031] In the present invention, unless otherwise specified, the raw materials used in the present invention are preferably commercially available products.

[0032] The invention mixes ultra-high molecular weight polyethylene, bacteriostatic particles and s...

Embodiment 1

[0055] Add ultra-high molecular weight polyethylene (particle size: 100 μm, weight average molecular weight: 4 million) and nano-copper (particle size: 100nm) into the white oil at a mass ratio of 100:3 and put it into the feeding tank for dissolution, room temperature at 150rpm After stirring for 15 minutes, it was swollen at 120°C for 30 minutes and dissolved at 200°C for 60 minutes to form a spinning solution with a total mass concentration of ultra-high molecular weight polyethylene and nano-copper of 5%.

[0056] The spinning liquid is metered and sent to the twin-screw extruder and extruded through the spinneret at 270°C, and then bundled in a coagulation bath (the reagent in the coagulation bath is water, and the temperature is room temperature) to form jelly filaments. The diameter is about 300 μm.

[0057] The jelly filaments were extracted in dichloromethane (bath ratio: 30:1), and dried at 60° C. to obtain a fiber precursor.

[0058] Copper phthalocyanine (particle...

Embodiment 2

[0063] Add ultra-high molecular weight polyethylene (particle size 100 μm, weight average molecular weight 4 million) and nano-silver (particle size 100nm) into white oil at a mass ratio of 100:2 and put it into a feeding tank for dissolution, room temperature at 150rpm After stirring for 15 minutes, it was swelled at 125° C. for 35 minutes and dissolved at 240° C. for 40 minutes to form a spinning solution with a total mass concentration of ultra-high molecular weight polyethylene and nano silver of 7%.

[0064] After the spinning solution is metered, it is sent to the twin-screw extruder and extruded through the spinneret at 270°C, and then aggregated to form jelly filaments through a coagulation bath (coagulation bath reagent is water, and the temperature is room temperature). The diameter is about 300 μm.

[0065] The jelly filaments were extracted in n-octane (bath ratio: 30:1), and dried at 60° C. to obtain a fiber precursor.

[0066] Tetraaminozinc phthalocyanine (with...

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Abstract

The invention relates to the technical field of preparation of special fibers, and provides a bacteriostatic high-strength high-modulus polyethylene colored fiber and a preparation method thereof. According to the preparation method disclosed by the invention, phthalocyanine is used as a coloring dye, not only has a coloring function, but also can be combined with antibacterial particles, so that the antibacterial activity of the fiber is further improved; and the mass concentration of the dye bath liquid is 1-10%, so that the dye is uniformly dispersed in the bath liquid and is not easy to migrate in subsequent super-stretching, and the coloring uniformity is ensured. In addition, the antibacterial particles are doped into the ultra-high molecular weight polyethylene in the swelling process, so that the adsorbability of the antibacterial particles is improved; and after being extracted and dried, gel silk is soaked in dye bath liquid formed by phthalocyanine, so that the defect that the antibacterial effect is reduced due to partial escape of antibacterial particles is overcome, and the antibacterial activity and colorability of the fiber are ensured.

Description

technical field [0001] The invention relates to the technical field of special fiber preparation, in particular to an antibacterial high-strength high-modulus polyethylene colored fiber and a preparation method thereof. Background technique [0002] As one of the three high-performance fibers, ultra-high molecular weight polyethylene (UHMWPE) fiber has high strength, high modulus, low density (0.97g / cm 3 ), excellent chemical stability and good wear resistance, are widely used in national defense, military, aerospace and other fields. In addition to playing an extremely important role in military, national defense and other fields, UHMWPE fibers have also been widely used in civilian fields such as medical materials and sports equipment. With the expansion of the application field of UHMWPE fiber, the demand for antibacterial UHMWPE colored fiber is increasing. [0003] The Chinese patent with the publication number CN109868518A discloses a production method of antibacteri...

Claims

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Application Information

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IPC IPC(8): D01F6/46D01F1/10D06P3/79D06P1/14D01D5/06D02J1/22D06B13/00
CPCD01F6/46D01F1/103D06P3/79D06P1/14D01D5/06D06B13/00D02J1/228D02J1/224
Inventor 王刚强吕汪洋张间芳包建娜王鑫宇顾彩琴俞凌晓
Owner 浙江理工大学上虞工业技术研究院有限公司