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A kind of preparation method of functional melt-blown material

A functional, melt-blown technology, applied in rayon manufacturing, textile and papermaking, conjugated synthetic polymer rayon, etc., can solve the problems of difficult control of additive distribution, difficult to promote, cumbersome operation process, etc., to optimize materials performance, reduce the loss of mechanical properties, and improve the effect of application prospects

Active Publication Date: 2022-02-25
上海邀加科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) When spinning a single polymer component, the distribution of additives in the fiber is difficult to control, and the effect of additives cannot be maximized;
[0007] (2) Two-component and multi-component meltblown systems have not been fully utilized, and there are disadvantages of cumbersome operation when used at the same time, which is difficult to promote

Method used

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  • A kind of preparation method of functional melt-blown material
  • A kind of preparation method of functional melt-blown material
  • A kind of preparation method of functional melt-blown material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] The equipment used is a two-component melt-blown spinning machine:

[0077] (1) adding silver nanoparticles (5-30nm in the particle size range) of 0.1% feed mass in the slices of polypropylene polymers whose melt index MFI is 1500-1600 g / 10 minutes (fusing point is 173° C.), Use the temperature of 255±10°C in the feed bin 001a for high-temperature melting, extrude the polypropylene melt 1 containing silver nanoparticles from the screw extruder 002a, and enter the gear metering pump 004a; at the same time, set the melt index MFI to 1500 - 1600g / 10min (melting point: 173°C) polypropylene high-molecular polymer slices are melted at a temperature of 275±10°C in the feed bin 001b, and the polypropylene melt is extruded from the screw extruder 002b 2 , into the gear metering pump 004b;

[0078] (2) The polypropylene melt 1 flows through the specific pipes in the hanger-type die device 005 and the distribution plate 006, and enters the shell part of the core-shell nozzle 007;...

Embodiment 2

[0083] The equipment used is a two-component melt-blown spinning machine:

[0084] (1) Slices of polypropylene high molecular polymers with a melt index MFI of 1500-1600 g / 10 minutes (melting point 173°C) are melted at a temperature of 255±10°C in the feed bin 001a, and extruded from the screw The polypropylene melt 1 is extruded from the exit machine 002a and enters the gear metering pump 004a; at the same time, the polypropylene polymer slices with a melt index MFI of 1500-1600 g / 10 minutes (melting point of 173°C) are added to the feed Magnesium stearate with a mass of 2% is melted at a temperature of 275±10°C in the feed bin 001b, and the polypropylene melt 2 containing magnesium stearate is extruded from the screw extruder 002b, and enters the gear metering pump 004b ;

[0085] (2) The polypropylene melt 1 flows through the specific pipes in the hanger-type die device 005 and the distribution plate 006, and enters the shell part of the core-shell nozzle 007; the polyprop...

Embodiment 3

[0090] The equipment used is a two-component melt-blown spinning machine:

[0091] (1) Adding feed quality 0.1% sterilizing additive silver nanoparticles (particle size range 5-30nm) to the slices of polypropylene macromolecular polymers whose melt index MFI is 1500-1600 g / 10 minutes (melting point is 173° C.) , use the temperature of 255±10°C in the feed bin 001a for high-temperature melting, extrude the polypropylene melt 1 containing silver nanoparticles from the screw extruder 002a, and enter the gear metering pump 004a; at the same time, set the melt index MFI to 1500-1600 g / 10 minutes (melting point is 173 ℃) polypropylene high molecular polymer slices, add 0.5% of the feed quality titanium dioxide nanoparticles (particle size range 10-50nm), use 275± Perform high-temperature melting at a temperature of 10°C, extrude polypropylene melt 2 containing titanium dioxide nanoparticles from the screw extruder 002b, and enter the gear metering pump 004b;

[0092] (2) The polypr...

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Abstract

The invention discloses a preparation method of a functional melt-blown material, which relates to the field of chemical fiber manufacturing. It includes the following steps: using a two-component melt-blown system or a multi-component melt-blown system, the single-component high polymer raw material slices are directly fed into the system from two or more feed bins, and at least one feed bin Additives are put in, and the functional melt-blown material is obtained through melt-blown spinning. In the fibers of the functional melt-blown material, additives of specified concentrations can be set at different positions. The method prepares different structures according to different additives, flexibly regulates the concentration distribution and types of additives in single-component polymer melt-blown fibers, optimizes material properties, and expands the use of two-component melt-blown systems and multi-component melt-blown systems.

Description

technical field [0001] The invention relates to the field of chemical fiber manufacturing, in particular to a method for preparing functional melt blown materials. Background technique [0002] The melt-blown method is to blow the polymer melt through high-speed and high-temperature airflow, so that the melt stream is extremely stretched to form ultra-fine fibers, and then condensed on the porous drum or web forming curtain to form a fiber web, and then bonded to itself. A production technique in which nonwoven fabrics are made by bonding or thermal bonding to strengthen them. The products produced by melt-blown non-woven fabrics have the advantages of high filtration efficiency, low resistance, softness, and self-bonding of the fiber web without adding a binder. They are widely used in air filtration (medium-efficiency and sub-high-efficiency filtration, etc.) ), personal protection (N95 or KN95 grade dust masks, compounded with spunbonded cloth for isolation clothing or p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/56D04H1/541D01F8/06D01F1/10
CPCD04H1/56D04H1/541D01F8/06D01F1/10D01F1/103
Inventor 不公告发明人
Owner 上海邀加科技有限公司