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Polypropylene electret master batch, preparation method thereof and polypropylene melt-blown non-woven fabric

A technology of polypropylene and non-woven fabrics, which is applied in the manufacture of single-component polyolefin rayon, non-woven fabrics, and rayon. It can solve the problems of poor electret effect and poor compatibility, and achieve high yield and high yield. The effect of high fluidity and simple process

Active Publication Date: 2020-11-03
GUANGZHOU LUSHAN NEW MATERIALS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first purpose of the present invention is to provide polypropylene electret masterbatch to solve technical problems such as poor electret effect caused by poor compatibility in the prior art

Method used

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  • Polypropylene electret master batch, preparation method thereof and polypropylene melt-blown non-woven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] This embodiment provides polypropylene electret master batches, including the following components in parts by weight:

[0051] 70 parts of polypropylene resin with a melt index of 1200g / 10min, 30 parts of zinc stearate, 2 parts of dibenzylidene sorbitol, 3 parts of maleic anhydride grafted polypropylene with a melt index of 250g / 10min, and 5 parts of polypropylene wax , 0.5 parts of tris(2,4-di-tert-butyl)phenyl phosphite.

[0052] The preparation method of the polypropylene electret masterbatch of the present embodiment, comprises the steps:

[0053] (a) Zinc stearate, dibenzylidene sorbitol and maleic anhydride grafted polypropylene are stirred uniformly to obtain a modified mixture;

[0054] (b) The polypropylene resin is placed in the mixer, and after stirring for 10 minutes, the modified mixture obtained in step (a), polypropylene wax, tris (2,4-di-tert-butyl) phenyl phosphite Add it into the mixer and continue to stir for 30 minutes to obtain the premix;

[00...

Embodiment 2

[0057] This embodiment provides polypropylene electret master batches, including the following components in parts by weight:

[0058] 75 parts of polypropylene resin with a melt index of 1300g / 10min, 25 parts of magnesium stearate, 3 parts of bis(p-methyldibenzylidene)sorbitol, and a maleic anhydride grafted propylene-based elastomer with a melt index of 120g / 10min 2.5 parts, 3.5 parts of polypropylene wax, 1 part of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester.

[0059] The preparation method of the polypropylene electret masterbatch of the present embodiment, comprises the steps:

[0060] (a) Stir magnesium stearate, two (p-methyl dibenzylidene) sorbitol and maleic anhydride grafted propylene-based elastomer to obtain a modified mixture;

[0061] (b) Place the polypropylene resin in a mixer, and after stirring for 10 minutes, sequentially mix the modified mixture obtained in step (a), polypropylene wax, tetrakis[β-(3,5-di-tert-butyl-4 -...

Embodiment 3

[0064] This embodiment provides polypropylene electret master batches, including the following components in parts by weight:

[0065] 80 parts of polypropylene resin with a melt index of 1400g / 10min, 20 parts of aluminum laurate, 4 parts of bis(4-methyldibenzylidene)sorbitol, and methyl methacrylate grafted polypropylene with a melt index of 150g / 10min 2.5 parts, 4 parts of polyethylene wax, 1.5 parts of n-octadecyl β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate.

[0066] The preparation method of the polypropylene electret masterbatch of the present embodiment, comprises the steps:

[0067] (a) stirring aluminum laurate, bis(4-methyldibenzylidene) sorbitol and methyl methacrylate grafted polypropylene to obtain a modified mixture;

[0068] (b) Place the polypropylene resin in a mixer, and after stirring for 10 minutes, sequentially mix the modified mixture obtained in step (a), polyethylene wax, β-(3,5-di-tert-butyl-4-hydroxy Phenyl) n-octadecanyl propionate was added in...

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Abstract

The invention relates to the technical field of high polymer materials, in particular to a polypropylene electret master batch, a preparation method thereof, and a polypropylene melt-blown non-woven fabric. The polypropylene electret master batch comprises the following components in parts by weight: 70-90 parts of polypropylene resin, 10-30 parts of an electret agent, 2-5 parts of a nucleating agent, 1-3 parts of a compatilizer, 3-5 parts of a lubricant and 0.5-2 parts of an antioxidant; wherein the electret comprises any one or more of zinc salt, magnesium salt and aluminum salt of long-chain fatty acid with the carbon atom number of 14-22. The preparation method comprises the following steps: uniformly mixing the components in proportion to obtain a premix, and granulating the premix. The polypropylene electret master batch obtained through cooperation of the components has high fluidity, the volatile components and the melt index of the polypropylene electret master batch are morestable, the electret effect of the polypropylene melt-blown non-woven fabric produced by the electret master batch can be effectively improved, the electret effect is stable, the filtering efficiencyis improved, and the filtering resistance is reduced.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polypropylene electret masterbatch, a preparation method thereof, and a polypropylene melt-blown nonwoven fabric. Background technique [0002] As the PM2.5 exposure rate is getting higher and higher, people pay more attention to indoor and outdoor air quality, and begin to increase efforts to improve the atmospheric environment. Air filter material is the most direct and effective way to solve the transmission of air particles, which can effectively reduce the damage of inhalable particles to human health and prevent the spread of diseases. Melt-blown non-woven filter materials have been widely used in medical protective masks, dust masks, and air purifiers. However, filtering only by physical and mechanical barriers cannot effectively remove finer particles in the air. Especially with the deterioration of the atmospheric environment, the diameter of particles in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L51/06C08K5/098C08K5/1575C08K5/526C08J3/22C08K5/134C08K5/527C08L23/06D01F6/46D01F1/10D04H1/544D04H1/56
CPCC08J3/226D01F6/46D01F1/10D04H1/544D04H1/56C08J2423/12C08J2451/06C08J2423/06C08K5/098C08K5/1575C08K5/526C08K5/1345C08K5/527Y02P70/62
Inventor 汪渝轩郭森唐舫成汪加胜
Owner GUANGZHOU LUSHAN NEW MATERIALS
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