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Low-odor, high-toughness and high-electret polypropylene melt-blown material and preparation method thereof

A polypropylene melt-blown, high-toughness technology, which is applied in filament molding, fiber processing, textiles and papermaking, etc., can solve the problem of large variation range of melt flow rate of melt-blown materials, incomplete degradation of peroxides, and molecular weight distribution. Wide and other problems, to achieve good toughening effect, complete peroxide degradation reaction, and narrow molecular weight distribution

Pending Publication Date: 2021-01-08
ZHEJIANG JAVA SPECIALTY CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has many disadvantages. The random fracture of the polypropylene main chain leads to poor toughness, and the produced melt-blown cloth is easy to tear and has low strength.
The degradation of peroxide is not complete, the melt flow rate of meltblown material varies widely, the molecular weight distribution is wide, and meltblown fluctuations occur. The residue of peroxide will cause the produced meltblown cloth to have a strong smell and make people feel uncomfortable.
Additional addition of electret masterbatch will also lead to uniform distribution of electret, poor electret effect, and low filter efficiency of melt blown cloth

Method used

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  • Low-odor, high-toughness and high-electret polypropylene melt-blown material and preparation method thereof
  • Low-odor, high-toughness and high-electret polypropylene melt-blown material and preparation method thereof
  • Low-odor, high-toughness and high-electret polypropylene melt-blown material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The polypropylene is Satellite Petrochemical PPH225 with a melt index of 25g / 10min. The antioxidant is composed of antioxidant 1010 and antioxidant 168 in a mass ratio of 2:1. The halogen absorbent is calcium stearate. The peroxide degrader is BIPB. The electret is tourmaline powder with an average particle size of 0.3um. The toughening agent is ExxonMobil POE8880, the viscosity at 190°C is 1200cP.

[0037] The preparation method of polypropylene melt-blown material. Choose a three-screw extruder with a length-to-diameter ratio of 45:1, and the arrangement of the three-screw meshing areas is in the shape of a "one", such as figure 1 As shown, there are feeding section, conveying section, melting section, exhaust section and homogenizing section. There are three precision weight loss scales at the feeding section, which are the first weight loss scale, the second weight loss scale and the third weight loss scale. There are two vacuum systems in the gas section, and ...

Embodiment 2

[0039] The polypropylene is Satellite Petrochemical PPH225 with a melt index of 25g / 10min. The antioxidant is composed of antioxidant 1010 and antioxidant 168 in a mass ratio of 2:1. The halogen absorbent is zinc stearate. The peroxide degrader is BIPB. The electret is a mixture of tourmaline powder and EBS (N,N'-ethylene bisstearamide) at a mass ratio of 2:1, and the average particle size of tourmaline powder is 0.3um. The toughening agent is ExxonMobil POE8880, the viscosity at 190°C is 1200cP.

[0040] The preparation method is the same as that of the polypropylene melt-blown material in Example 1.

Embodiment 3

[0042]The polypropylene is Satellite Petrochemical PPH225 with a melt index of 25g / 10min. The antioxidant is composed of antioxidant 1010 and antioxidant 168 in a mass ratio of 2:1. The halogen absorbent is calcium stearate. The peroxide degrader is DTBP. The electret is a mixture of tourmaline powder and EBS (N,N'-ethylene bisstearamide) at a mass ratio of 2:1, and the average particle size of tourmaline powder is 0.3um. The toughening agent is ExxonMobil POE8880, the viscosity at 190°C is 1200cP.

[0043] The preparation method is the same as that of the polypropylene melt-blown material in Example 1.

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Abstract

The invention discloses a low-odor, high-toughness and high-electret polypropylene melt-blown material and a preparation method thereof. The low-odor, high-toughness and high-electret polypropylene melt-blown material comprises 100 parts of polypropylene, 0.1-0.5 part of an antioxidant, 0.05-0.5 part of a halogen absorbent, 0.2-0.8 part of a peroxide degradation agent, 0.05-0.5 part of an electretagent and 2-8 parts of a flexibilizer. The invention also provides a preparation method of the low-odor, high-toughness and high-electret polypropylene melt-blown material. The polypropylene melt-blown material provided by the invention has the characteristic of low odor, and the melt-blown cloth prepared from the melt-blown material has good toughness and electret effect.

Description

technical field [0001] The invention belongs to the field of polypropylene modification processing, in particular to a low-odor, high-toughness, high-electret polypropylene melt-blown material and a preparation method thereof. Background technique [0002] In the context of the continuous raging of the new crown virus and the unrelenting protection against the epidemic, wearing a mask as an important means of protection can greatly reduce the transmission rate of the new crown virus, and it is also one of the essential protective tools for people to travel now. With the normalization of epidemic protection, people's requirements for masks are getting higher and higher. Polypropylene melt blown material is used as the raw material for the core layer of masks. Only high-quality polypropylene melt blown material can produce good filtering effect, low odor, Melt blown cloth with high toughness. [0003] At present, the polypropylene melt-blown material on the market is mainly b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L23/08C08K13/02C08K5/134C08K5/526C08K5/098C08K5/14C08K3/38C08K5/20D01D1/00
CPCC08L23/12C08L23/14D01D1/00C08L2205/02C08K2003/387C08L2203/12C08L23/0815C08K13/02C08K5/1345C08K5/526C08K5/098C08K5/14C08K3/38C08K5/20
Inventor 徐力群胡号蒋城科刘飞任杰金林赵汉超王永辉
Owner ZHEJIANG JAVA SPECIALTY CHEM CO LTD
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