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Environment-friendly polypropylene melt-blown material and preparation method thereof

A polypropylene melt-blown, environmentally friendly technology, applied in the field of non-woven materials, can solve problems such as high VOC content, strong odor, and poor processing stability, and achieve the effects of low VOC content, simple production process, and high production efficiency

Active Publication Date: 2021-02-05
SHENZHEN WOER HEAT SHRINKABLE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to propose an environment-friendly polypropylene melt-blown material and its preparation method, which solves the problem of poor processing stability of the product due to the use of peroxides when the polypropylene melt-blown material is prepared by the degradation method in the prior art. , high odor, and high VOC content. The prepared environmentally friendly polypropylene melt blown material has the characteristics of stable quality, low odor, low VOC content, and high melt index. The preparation method is easy to operate, safe and reliable

Method used

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  • Environment-friendly polypropylene melt-blown material and preparation method thereof
  • Environment-friendly polypropylene melt-blown material and preparation method thereof
  • Environment-friendly polypropylene melt-blown material and preparation method thereof

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preparation example Construction

[0057] In the second aspect, the preparation method of the environment-friendly polypropylene melt-blown material in the first aspect is provided, which includes the following steps: weighing each raw material according to the proportion, mixing the raw materials uniformly to obtain a mixture; then extruding the mixture with a twin-screw The extruder is extruded at a temperature of 180-220°C, drawn into strips, air-cooled and pelletized, and the environmentally friendly polypropylene melt-blown material can be obtained after drying.

[0058] Compared with the traditional method, the environmentally friendly polypropylene melt blown material of the present invention has the characteristics of wide source of raw materials, simple production process, high production efficiency, safe and reliable production process, stable product quality, high product quality, no pollution to the environment, and easy to realize large-scale production. Continuous production.

Embodiment 1

[0064] An environment-friendly polypropylene melt-blown material, which is made of the following raw materials in parts by weight: 100 parts of irradiated polypropylene; 0.5 parts of antioxidant; 0.5 parts of lubricant; 3 parts of modifier; 0.3 parts of nucleating agent.

[0065] Wherein, the preparation method of the irradiated polypropylene is:

[0066] The first irradiation treatment: the polypropylene is subjected to the first irradiation treatment through an electron accelerator or a cobalt source to obtain pre-irradiated polypropylene, wherein the irradiation dose is 5Mrad and the irradiation time is 30s;

[0067] Extrusion granulation treatment: after mixing the pre-irradiated polypropylene, antioxidant and lubricant, extruding through an extruder at a temperature of 180-220°C, drawing strands, air-cooling, pelletizing, and drying to obtain Semi-finished polypropylene; Wherein, the weight ratio of described pre-irradiated polypropylene, antioxidant and lubricant is 100:...

Embodiment 2

[0072] An environment-friendly polypropylene melt-blown material, which is made of the following raw materials in parts by weight: 100 parts of irradiated polypropylene; 0.3 parts of antioxidant; 0.5 parts of lubricant; 2 parts of modifier; 0.2 parts of nucleating agent.

[0073] Wherein, the preparation method of the irradiated polypropylene is:

[0074] The first irradiation treatment: the polypropylene is subjected to the first irradiation treatment through an electron accelerator or a cobalt source to obtain pre-irradiated polypropylene, wherein the irradiation dose is 5 Mrad, and the irradiation time is 20s;

[0075] Extrusion granulation treatment: after mixing the pre-irradiated polypropylene, antioxidant and lubricant, extruding through an extruder at a temperature of 180-220°C, drawing strands, air-cooling, pelletizing, and drying to obtain Semi-finished polypropylene; Wherein, the weight ratio of described pre-irradiated polypropylene, antioxidant and lubricant is 10...

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Abstract

The invention discloses an environment-friendly polypropylene melt-blown material and a preparation method thereof. The environment-friendly polypropylene melt-blown material is prepared from the following raw materials in parts by weight: 100 parts of irradiated polypropylene; 0.05 to 0.5 part of an antioxidant; 0.1 to 0.5 part of a lubricant; 0.5 to 3 parts of a modifier; and 0.05 to 0.3 part ofa nucleating agent. The irradiated polypropylene is obtained by sequentially carrying out first irradiation treatment, extrusion granulation treatment and second irradiation treatment on polypropylene. According to the technical scheme, the irradiated polypropylene, the antioxidant, the lubricant, the modifier and the nucleating agent are adopted as raw materials, the ratio of the raw materials is reasonably set, the raw materials are matched with one another, an unexpected technical effect is achieved, and the obtained environment-friendly polypropylene melt-blown material meets the specialmaterial standard of T / SGX 001-2020 Special Polypropylene (PP) Material for Melt-blown Medical Masks, and has the characteristics of stable quality, low odor, low VOC content, narrow molecular weightdistribution and high melt index (up to 1500+ / -100g / 10min or above).

Description

technical field [0001] The invention relates to the field of nonwoven materials, in particular to an environment-friendly polypropylene melt-blown material and a preparation method thereof. Background technique [0002] Polypropylene melt-blown material is used as the raw material of the melt-blown cloth for the core filter layer of protective masks. After it is made into melt-blown cloth, it is used as the filter layer in the middle of the mask to filter bacteria, viruses and tiny particles in the air. It is also the main raw material for medical supplies such as protective clothing, surgical caps and sterile drapes. In order to make the sprayed melt-blown cloth have high-efficiency filtration performance, good antibacterial performance, low air resistance, good hand feeling and other remarkable characteristics, the diameter of the melt-blown material is required to reach 1-4 μm when spinning, so polypropylene melt-blown is required The material has a melt index as high as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L53/02C08L25/10C08L23/08C08K13/02C08K5/20C08K5/098
CPCC08L23/12C08L2312/06C08L53/025C08K13/02C08K5/20C08L25/10C08K5/098C08L23/0815
Inventor 黄昭政冯雪雁陈韩江王宇源
Owner SHENZHEN WOER HEAT SHRINKABLE MATERIAL
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