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Polypropylene melt-blown non-woven fabric based on composite antibacterial electret master batches and preparation method

A polypropylene melt-blown and composite antibacterial technology, which is applied in the manufacture of non-woven fabrics, single-component polyolefin rayon, rayon, etc., can solve the problem of increasing the fiber diameter and pores of polypropylene non-woven fabrics, polypropylene melt The antibacterial effect of spray cloth is short-lived and the filtration performance is reduced, so as to achieve the effects of excellent high efficiency and low resistance performance, enhanced antibacterial performance, long-lasting charge storage capacity, and enhanced antibacterial performance

Active Publication Date: 2021-10-01
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the antibacterial agent is simply blended with the polypropylene matrix without any chemical bond, so there is a problem of antibacterial agent loss, which has huge potential hazards to human health, and if the electret masterbatch does not solve the problem of agglomeration, it will Further increase the fiber diameter and pores of polypropylene nonwovens, thereby reducing its filtration performance
[0006] In summary, the polypropylene melt-blown cloth prepared by the above preparation method has the defects of short-term antibacterial effect and loss of antibacterial agent

Method used

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  • Polypropylene melt-blown non-woven fabric based on composite antibacterial electret master batches and preparation method
  • Polypropylene melt-blown non-woven fabric based on composite antibacterial electret master batches and preparation method
  • Polypropylene melt-blown non-woven fabric based on composite antibacterial electret master batches and preparation method

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preparation example Construction

[0033] The invention provides a method for preparing a polypropylene melt-blown nonwoven fabric based on a composite antibacterial electret masterbatch, comprising the following steps:

[0034] S1, preparation of antibacterial masterbatch: After fully mixing polypropylene wax-grafted maleic anhydride masterbatch, polyhexamethyleneguanidine hydrochloride and conventional polypropylene masterbatch according to a predetermined ratio, extrusion granulation was carried out to prepare Obtain polypropylene wax grafted polyhexamethylene guanidine hydrochloride antibacterial masterbatch;

[0035] S2. Preparation of composite antibacterial electret masterbatch: After washing and drying the antibacterial masterbatch prepared in step S1, immerse in the silane coupling agent mixture, stir for 10-20min, and then add a predetermined amount of nano grade silicon dioxide, fully stirred, and then dried and cured to prepare a composite antibacterial electret masterbatch;

[0036] S3, the prepar...

Embodiment 1

[0047] S1. Preparation of antibacterial masterbatch: After fully mixing polypropylene wax-grafted maleic anhydride masterbatch, polyhexamethyleneguanidine hydrochloride and conventional polypropylene masterbatch at a ratio of 15:3:5, the main feed The feed port is fed into a twin-screw extruder, and then the extruded product is pelletized to obtain the antibacterial masterbatch of polypropylene wax-grafted polyhexamethyleneguanidine hydrochloride.

[0048] Wherein, the grafting rate of the polypropylene wax grafted with maleic anhydride is 6% to 8%; the twin-screw extruder contains 9 heating sections, from the feed to the machine head, the set section temperature Incremental in turn, the temperature setting range is 140-180°C, the main screw motor speed is 40rpm, the main feeding motor speed is 15rpm, and the specific temperature of the 9 heating sections is set as: 140°C, 150°C, 160°C, 160°C ℃, 165℃, 170℃, 170℃, 175℃, 180℃.

[0049] S2, silicon dioxide (SiO 2 ) Modified com...

Embodiment 2-7

[0067] The difference from Example 1 is that the proportioning of each raw material in the preparation process is different, as shown in Table 1, and the others are the same as in Example 1, and will not be repeated here.

[0068] Table 1 is each raw material ratio setting and its performance parameter in embodiment 1-7 and comparative example 1-2

[0069]

[0070] Combined with Table 1 for analysis:

[0071] 1) The effect of the ratio setting of polypropylene wax grafted maleic anhydride masterbatch, polyhexamethyleneguanidine hydrochloride and conventional polypropylene masterbatch on the properties of polypropylene meltblown nonwovens is: polypropylene wax and The proportion of polyhexamethyleneguanidine hydrochloride will affect the grafting rate and antibacterial effect between the two; the proportion of conventional polypropylene masterbatch will affect whether the final extruded melt can be granulated, and its proportion is too low. If the melt viscosity is too high...

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Abstract

The invention provides a polypropylene melt-blown non-woven fabric based on composite antibacterial electret master batches and a preparation method. The preparation method comprises the following steps of S1, fully mixing polypropylene wax grafted maleic anhydride master batches, polyhexamethylene guanidine hydrochloride and conventional polypropylene master batches, and performing extrusion granulation treatment to obtain polypropylene wax grafted polyhexamethylene guanidine hydrochloride antibacterial master batches; S2, washing and drying the antibacterial master batches, immersing the antibacterial master batches in a silane coupling agent mixed solution, performing stirring, adding nanoscale silicon dioxide into the mixed solution, and performing full stirring, drying and curing to prepare the composite antibacterial electret master batches; and S3, after the composite antibacterial electret master batches and melt-blown polypropylene are fully mixed, performing melt-blow weaving treatment, and then performing corona discharge treatment to prepare the polypropylene melt-blown non-woven fabric based on the composite antibacterial electret master batches. The polypropylene melt-blown non-woven fabric prepared by the preparation method disclosed by the invention has high-efficiency and low-resistance performance and also has an excellent antibacterial effect.

Description

technical field [0001] The invention relates to the technical field of nonwoven fabric preparation, in particular to a polypropylene melt-blown nonwoven fabric based on composite antibacterial electret masterbatch and a preparation method thereof. Background technique [0002] Under the global background of the new crown virus epidemic, ordinary people and medical staff urgently need personal protective equipment to prevent germ infection in travel or working environments. In recent years, research on safe and efficient antibacterial materials and textiles has emerged in an endless stream, and these materials can quickly and effectively kill the bacteria adsorbed on them. Electret polypropylene-based nonwovens are widely used in various air filtration products due to their good filtration performance, and are currently the main material for making masks. [0003] However, there are obvious defects in the masks made of polypropylene-based nonwovens at present. During the fil...

Claims

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Application Information

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IPC IPC(8): D04H1/4291D04H1/56D01F6/46D01F1/10D06M10/02D06M101/20
CPCD04H1/4291D04H1/56D01F6/46D01F1/103D06M10/025D06M2101/20
Inventor 王栋赵青华陈卓梅涛宋银红尤海宁刘轲
Owner WUHAN TEXTILE UNIV
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