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A kind of highly compatible polypropylene electret masterbatch, its preparation method and melt-blown cloth

A technology of polypropylene melt-blown and polypropylene, applied in the direction of single-component polyolefin artificial filament, non-woven fabric, rayon manufacturing, etc., to achieve stable charge storage, increase tensile strength, and good compatibility

Active Publication Date: 2022-04-01
TAIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention aims to solve the compatibility problem between polypropylene, fluorocarbon polymer and tourmaline in the polypropylene melt-blown electret material in the prior art, and improve the electret effect of the melt-blown material, providing a highly compatible Melt-blown polypropylene electret masterbatch, the electret masterbatch is added to polypropylene, and the melt-blown cloth made has good compatibility, stable charge storage and high filtration efficiency

Method used

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  • A kind of highly compatible polypropylene electret masterbatch, its preparation method and melt-blown cloth
  • A kind of highly compatible polypropylene electret masterbatch, its preparation method and melt-blown cloth
  • A kind of highly compatible polypropylene electret masterbatch, its preparation method and melt-blown cloth

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Blend tourmaline (Lingshou County Guanghui Mine Products Processing Company, 2500 mesh) and magnesium stearate (He Nanyijia Biotechnology Co., Ltd., 400 mesh) in a high-speed mixer to mix tourmaline and magnesium stearate Homogeneous to obtain mixture A; take polypropylene (Sinopec, melting index 25g / 10min), polyvinylidene fluoride (Arkema, KYNAR 340) and ethylene-chlorotrifluoroethylene copolymer (Sinochem Lantian Group Co., Ltd. ) in a high-speed mixer to obtain mixture B, then add mixture A, and continue to mix evenly, wherein the mass ratio of polypropylene, polyvinylidene fluoride, ethylene-chlorotrifluoroethylene copolymer, tourmaline, and magnesium stearate is 1:0.3:0.1:0.2:0.05.

[0033] The mixture was melted and extruded through a twin-screw extruder, cooled in a water tank and pelletized by a pelletizer, wherein the blending temperature in the twin-screw extruder and extrusion melt-blown equipment was 242 ° C, the screw speed was 50 rpm, and the drying A...

Embodiment 2

[0037] According to the preparation process of Example 1, no magnesium stearate was added in step (1), other raw material ratios and preparation process were unchanged, and meltblown raw materials and electret meltblown cloth were obtained.

Embodiment 3

[0039] According to the preparation process of Example 1, the ethylene-chlorotrifluoroethylene copolymer was not added in step (1), and the proportions of other raw materials and preparation conditions were unchanged to obtain meltblown raw materials and electret meltblown cloth.

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Abstract

The invention relates to the technical field of polymer materials, and discloses a highly compatible polypropylene electret masterbatch, a preparation method thereof and a melt-blown cloth. 0.5: 0.05-0.2 polypropylene, polyvinylidene fluoride, ethylene-chlorotrifluoroethylene copolymer, tourmaline, magnesium stearate. Ethylene-chlorotrifluoroethylene copolymer and magnesium stearate are used as compatibilizers to improve the compatibility between polypropylene, polyvinylidene fluoride and tourmaline, and ethylene-chlorotrifluoroethylene copolymer plays a role in the formula Compatibilization, electret and strengthening and toughening; magnesium stearate plays three functions of compatibilization, lubrication and electret in the formula, so that the final obtained polypropylene melt-blown material has good compatibility, stable storage charge, and filtration High efficiency and broad application prospects.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a highly compatible polypropylene electret masterbatch, a preparation method thereof and a melt-blown cloth. Background technique [0002] Polypropylene is rich in raw materials, light in weight and low in cost, and has the characteristics of non-polarity, hydrophobicity and high resistivity. It can be used as an electret filter material with good performance, but there are still poor charge storage performance, strength and toughness. Defects, especially in high temperature and high humidity environments, will rapidly decay or even disappear. Inorganic or organic additives can significantly improve the electret's charging ability and enhance its filtration performance. The functional inorganic and organic fillers and polypropylene are made into high-concentration melt-blown masterbatch, and then the masterbatch and polypropylene are blended and melted in a certain pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L27/16C08L23/08C08K3/38C08K5/098C08J3/22D01F6/46D01F1/10D04H1/541D04H1/56
CPCC08J3/226D01F6/46D01F1/10D04H1/541D04H1/56C08J2423/12C08J2427/16C08J2423/08C08J2323/12C08K3/38C08K5/098
Inventor 杨旭宇金瑛何志才黄国波
Owner TAIZHOU UNIV
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