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Modified polypropylene fiber and preparation method thereof

A polypropylene fiber modification technology, applied in fiber treatment, fiber chemical characteristics, rayon manufacturing, etc., can solve the problems of loss of functionality, poor functionality, loss of functional materials, etc., to achieve long-lasting functional effects, strong functionality, Minor effect of equipment changes

Inactive Publication Date: 2015-04-08
BINZHOU COC CARPET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage is that the method is simple, time-saving and labor-saving, but the disadvantage is that the functional material coated on the surface of the fiber or fabric is easily lost after repeated washing, and then loses its functionality.
The functional particles on the edge of the section of the solid fiber section (that is, near the surface of the fiber body) are easy to release their functionality, while the functional particles near the center of the fiber body are difficult to release and contact with the outside world, so their corresponding functions sex is worse

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of the cortex: 2 parts of nano-silver with a particle size of 50nm, 0.5 part of stearyl acrylate-maleic anhydride copolymer (OA-MA) and the remainder of the polypropylene slices are blended as the cortex.

[0028] Preparation of the core layer: Polypropylene chips were used as the core layer.

[0029] Modified polypropylene fiber: 20 parts of the skin layer component and 80 parts of the core layer component are subjected to sheath-core composite spinning to obtain nano-silver modified antibacterial polypropylene fiber.

[0030] Preparation of modified polypropylene fiber by spun-bonding method: 20 parts of the skin layer component and 80 parts of the core layer component are used as the core layer, and the skin-core composite spinning is carried out, then air stretching is carried out, and the net is laid and then consolidated by hot pressing method. net to obtain nano-silver modified antibacterial polypropylene fibers.

[0031] Preparation of modified poly...

Embodiment 2

[0033] Preparation of the skin layer: 30 parts of nano-silica with a particle size of 120nm, 0.5 parts of polypropylene grafted maleic anhydride (PP-g-MAH) or maleic anhydride grafted polyethylene octene elastomer (POE-g-MAH) It is blended with the remaining polypropylene chips and then extruded through a screw extruder to obtain nano-silica modified polypropylene masterbatch. Take 20 parts of the above-mentioned modified polypropylene masterbatch and blend with 80 parts of polypropylene slices as the cortex.

[0034] Preparation of the core layer: Polypropylene chips were used as the core layer.

[0035] Modified polypropylene fiber: 40 parts of the skin layer component and 60 parts of the core layer component are subjected to sheath-core composite spinning to obtain nano-silica modified polypropylene fiber.

[0036] Preparation of modified polypropylene fiber by spun-bonding method: 40 parts of the skin layer component and 60 parts of the core layer component are used for s...

Embodiment 3

[0039] Preparation of the skin layer: blending 3 parts of N-substituted alkoxy hindered amine flame retardant and the balance with polypropylene chips to form the skin layer.

[0040] Preparation of the core layer: Polypropylene chips were used as the core layer.

[0041] Modified polypropylene fiber: 50 parts of the skin layer component and 50 parts of the core layer component are subjected to sheath-core composite spinning to obtain flame-retardant polypropylene fiber.

[0042] Preparation of modified polypropylene fiber by spunbond method: 50 parts of the skin layer component and 50 parts of the core layer component are used for skin-core composite spinning, then air stretching, net laying, and then consolidated into a net by needle punching method. Obtain flame-retardant polypropylene fiber.

[0043] Preparation of modified polypropylene nonwoven fabric by melt blowing method: 50 parts of the skin layer component and 50 parts of the core layer component are subjected to s...

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Abstract

The invention relates to a modified polypropylene fiber and a preparation method thereof. The invention is characterized in that the fiber has a skin-core structure, wherein the core layer is composed of pure polypropylene; and the skin layer is composed of 0.5-60 parts of functional material, 0-5 parts of compatilizer and the balance of polypropylene, totaling 100 parts. The viscosity-average molecular weight of the polypropylene is 0.18-0.3 million, and the degree of isotacticity is greater than 95%. The functional material is a functional polypropylene fiber master batch prepared by blending and granulating inorganic or organic functional micropowder, a compatilizer and polypropylene, wherein the functional micropowder is composed of one or more of nano silicon dioxide, nano titanium dioxide, nano silicon dioxide, an anti-mite agent and an N-substituted alkoxy hindered amine flame retardant. The polypropylene fiber can be subjected to skin-core conjugate spinning according to the skin-core formula, and can be further processed into a polypropylene fiber spunbonded nonwoven fabric or melt-blown nonwoven fabric by spunbonding or melt-blowing. The method has the advantages of simple production technique and small modification for equipment, and is easy for practical popularization and application.

Description

technical field [0001] The invention relates to the technical field of functional fibers, in particular to a modified polypropylene fiber and a preparation method thereof. Background technique [0002] Polypropylene fiber is a fiber made from propylene as raw material through polymerization and melt spinning. The traditional polypropylene fiber has poor hygroscopicity, so it is less used in the civilian field. In the industrial field, carpet is its main application method, and its function is relatively single. However, with the advancement of science and technology and the improvement of people's living standards, the traditional polypropylene carpet with a single function can no longer meet people's requirements for comfort and versatility. Therefore, how to modify the polypropylene fiber, and then process it into a multi-functional carpet with antibacterial, anti-mite, negative ion release, flame retardant, anti-ultraviolet, etc. is particularly necessary. [0003] At p...

Claims

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Application Information

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IPC IPC(8): D01F8/06D01F6/46D01F1/10D01F1/07D01D5/34
Inventor 李树峰胡云斗崔旗韩洪亮王书东刘以海李加录王召民张秀娟张立平
Owner BINZHOU COC CARPET
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