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Melt-blown polypropylene material as well as preparation equipment and method thereof

A technology of melt-blown polypropylene and polypropylene resin, applied in the field of polypropylene, which can solve the problems of low filtration rate and unqualified quality, and achieve the effects of reducing odor, simple method, and easy-to-obtain raw materials

Active Publication Date: 2020-11-06
GUANGDONG JUSHI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, the obtained melt-blown cloth is only melt-blown, the filtration rate is very low, and the quality is unqualified

Method used

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  • Melt-blown polypropylene material as well as preparation equipment and method thereof
  • Melt-blown polypropylene material as well as preparation equipment and method thereof
  • Melt-blown polypropylene material as well as preparation equipment and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An embodiment of the melt-blown polypropylene material of the present invention, the raw material of the melt-blown polypropylene material in this embodiment includes the following components by weight: the melt index is 25g / 10min (230±0.5°C / 2.16kg) 94 parts of polypropylene granules, 0.6 parts of DTBP, 5 parts of propylene-butene copolymer, 0.2 parts of the third-generation sorbitol transparent nucleating agent, and antioxidant 1010 and antioxidant 168 are mixed at a mass ratio of 1:3. 0.2 part of compound antioxidant.

[0029] Preparation process: Stir homopolypropylene pellets with a melt index of 25g / 10min, propylene-butene copolymer, third-generation sorbitol transparent nucleating agent and composite antioxidant, and then feed into the twin-screw from the main feeding port extruder; then add DTBP into the twin-screw extruder from the side feeding port through the metering pump; after the two parts of the material are melted and blended in the twin-screw extruder, ...

Embodiment 2

[0032] An embodiment of the melt-blown polypropylene material of the present invention, the raw material of the melt-blown polypropylene material in this embodiment includes the following components by weight: 94 parts of polypropylene granules, 0.6 parts of TPO, 3 parts of propylene butylene copolymer, 0.2 parts of third-generation sorbitol transparent nucleating agent and 2450.2 parts of antioxidant.

[0033]Preparation process: Stir and mix homopolypropylene pellets with a melt index of 20g / 10min, propylene butene copolymer, third-generation sorbitol transparent nucleating agent and antioxidant 245, and then feed into the twin-screw from the main feeding port extruder; then TPO is added into the twin-screw extruder from the side feeding port through the metering pump; after the two parts of the material are melted and blended in the twin-screw extruder, the material is pulled out and pelletized to obtain a controllable The melt-blown polypropylene material produced by the r...

Embodiment 3

[0036] An embodiment of the melt-blown polypropylene material of the present invention, the raw material of the melt-blown polypropylene material in this embodiment contains the following components by weight: 94.2 parts of polypropylene granules, 0.5 parts of DTBP, 5 parts of propylene-butene copolymer, 0.1 part of the third-generation sorbitol transparent nucleating agent, and antioxidant 1076 and antioxidant 168 are mixed at a mass ratio of 1:1. 0.2 part of composite antioxidant.

[0037] Preparation process: Stir homopolypropylene pellets with a melt index of 30g / 10min, propylene-butene copolymer, third-generation sorbitol transparent nucleating agent and antioxidant 1076, and then add them to the twin-screw from the main feeding port extruder; then add DTBP into the twin-screw extruder from the side feeding port through the metering pump; after the two parts of the material are melted and blended in the twin-screw extruder, the material is pulled out and pelletized to obt...

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Abstract

The invention discloses a melt-blown polypropylene material and a preparation method thereof, and belongs to the technical field of polypropylene. The melt-blown polypropylene material is prepared from the following raw materials of: 94 to 94.2 parts of homopolymerized polypropylene resin with a melt index of 20 to 30g / 10min; 0.5 to 0.6 part of a chain breaking agent; 3 to 7 parts of a softener; 0.1 to 0.2 part of a nucleating agent; and 0.1 to 0.2 part of an antioxidant. Equipment for producing the melt-blown polypropylene material is improved; a screw rod with the screw length-diameter ratiohigher than 52: 1 is used in the equipment, the proportion of a mixing section in a screw combination is larger than or equal to 45%, the proportion of a strong shearing block in the screw combination is smaller than or equal to 10%, and the proportion of a uniform conveying section after vacuum extraction in a conveying section is larger than or equal to 30% of the total length after extraction.The melt-blown polypropylene material prepared by the formula and the equipment has a high melt index; the ash content and volatile components of the material are controlled at a low level; the material meets national standards. The preparation method is simple, adopts easy-to-obtain raw materials and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of polypropylene, in particular to a meltblown polypropylene material and its preparation equipment and method. Background technique [0002] Medical experts pointed out that disposable medical masks and more advanced N90 and N95 masks can effectively block droplets, filter viruses, and effectively cut off the transmission route of viruses. And these masks can filter viruses, and the key role is the melt-blown non-woven fabric. [0003] The so-called melt-blown non-woven fabric is a non-woven fabric produced by a melt-blown process. The MI of polypropylene suitable for the melt blown process is no longer achievable by ordinary fiber grade polypropylene. Only when the MI reaches at least about 450g / 10min, will it be more suitable for the melt blown process, and it is better to reach 1500±100g / 10min. [0004] The output of hydrogen-modulated melt-blown polypropylene produced by major petrochemical plants is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L23/10C08K5/134C08K5/526C08K5/14C08K5/00C08K5/5397C08K5/132B29B9/06B29B13/10
CPCC08L23/12B29B9/06B29B13/10C08L2205/02C08L2203/12C08L23/14C08K5/14C08K5/1345C08K5/526C08K5/0083C08K5/5397C08L23/10C08K5/132
Inventor 张翼翔龚文幸陈锐彬蔡志勇董启殿刘鹏辉汪洋
Owner GUANGDONG JUSHI CHEM CO LTD
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