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Melt-blown polypropylene with ultra-long antibacterial effect and preparation method and application thereof

A polypropylene and organic antibacterial agent technology, applied in the field of polymer materials, can solve problems such as poor thermal stability of organic antibacterial agents

Active Publication Date: 2020-06-30
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the problems existing in the prior art, the inventors have studied diligently, by combining inorganic antibacterial agents (including photocatalytic antibacterial agents and far-infrared radiation antibacterial agents) with synthetic organic antibacterial agents, and modifying the surface of inorganic antibacterial agents. It solves the problem of dispersibility, solves the problem of poor thermal stability of organic antibacterial agents from the technical point of view, and melts and blends antibacterial agents with polypropylene, degradation agents, antioxidants, light stabilizers, fillers, etc. to prepare long-acting antibacterial agents. Melt blown grade polypropylene

Method used

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  • Melt-blown polypropylene with ultra-long antibacterial effect and preparation method and application thereof
  • Melt-blown polypropylene with ultra-long antibacterial effect and preparation method and application thereof
  • Melt-blown polypropylene with ultra-long antibacterial effect and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] S1, modification of inorganic nano antibacterial agent:

[0091] 1) Put the silane coupling agent KH550 into a beaker filled with absolute ethanol, stir and dilute;

[0092] 2) Add nano-titanium dioxide and nano-alumina (1:1) into (1) diluent, and stir thoroughly;

[0093] 3) The liquid prepared in 2) was reacted at 80° C. for 30 minutes, and the precipitate was collected after centrifugation, dried and ground for later use.

[0094] Table 1: Raw material usage table in S1

[0095] raw material KH550 Nano titanium dioxide + nano alumina Absolute ethanol parts by mass phr 10 10 100

[0096] S2, preparation of organic antibacterial agent masterbatch

[0097] Mix 100 parts by weight of melt-blown grade polypropylene, 0.5% by weight of zinc pyrithione, 0.1% by weight of discoloration inhibitor basic zinc carbonate, and 0.1% by weight of antioxidant 1010 in a mixer, Adding into twin-screws for melt blending and extruding, cooling and pelletizin...

Embodiment 2

[0103] Repeat the process of embodiment 1, difference is: the parts by weight of zinc pyrithione is 1% in the organic antibacterial agent masterbatch.

Embodiment 3

[0105] Repeat the process of embodiment 1, difference is: the parts by weight of zinc pyrithione is 3% in the organic antibacterial agent masterbatch.

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Abstract

The invention discloses melt-blown polypropylene with an ultra-long antibacterial effect and a preparation method and application thereof. The melt-blown polypropylene contains a polypropylene matrixand an antibacterial agent composition, wherein the antibacterial agent composition is selected from an organic antibacterial agent and an organic matter-modified inorganic antibacterial agent; the inorganic antibacterial agent is selected from a photocatalytic antibacterial agent and a far infrared radiation-type antibacterial agent. A melt-blown polypropylene non-woven fabric is prepared from the melt-blown polypropylene through melt blowing; and the melt-blown polypropylene can be applied to the fields of medical supplies, textiles, medical disinfection bandages, medical sheets, baby diapers and the like. According to the preparation method, a new device does not need to be added or an existing device does not need to be reformed, so that the process is simple and convenient; the long-acting antibacterial melt-blown polypropylene has a good inhibition effect on escherichia coli, staphylococcus aureus and the like; the antibacterial rate can reach 99% or above during 18 hours; and the antibacterial rate can reach 99% during 360 hours.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to a melt-blown grade polypropylene material, in particular to a melt-blown grade polypropylene with an ultra-long antibacterial effect and its preparation method and application. Background technique [0002] At present, the antibacterial efficiency of the meltblown cloth made of ordinary meltblown polypropylene is only 90% in general, and the antibacterial efficiency is only 3 months long, and the antibacterial efficiency is only about 50% after three months, which leads to the current antibacterial meltblown polypropylene. The propylene material is completely monopolized by foreign products. The antibacterial melt-blown polypropylene material not only ensures the ultra-high fluidity of polypropylene (melt index> 1200g / 10min), but also realizes the excellent antibacterial effect of the melt-blown cloth, and the antibacterial efficiency reaches 95% % and the antibacterial effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4291D04H3/007D01D5/08D01F1/10D01F6/46
CPCD01D5/08D01F1/103D01F6/46D04H1/4291D04H3/007D10B2401/13D10B2501/02D10B2501/021D10B2501/04D10B2509/00D10B2509/02D10B2509/026
Inventor 王媛卢咏来田洪池陈文泉张世甲韩吉彬徐雪梅韩丽丽张立群
Owner BEIJING UNIV OF CHEM TECH
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