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

A technology of melt-blown polypropylene and polypropylene, applied in the field of modified polypropylene, which can solve problems such as unstable adsorption of peroxide, collapse of cells, and high cost of dual-functional masterbatches

Active Publication Date: 2021-05-11
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the foaming carrier needs to use a special plasticizing device and is prepared through a complicated process, and there is a risk of cell collapse. The cost of the prepared dual-functional masterbatch is high and the adsorption effect of peroxide is unstable.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～10

[0049] See Table 1 for the content of each component of the melt-blown polypropylene material in Examples 1-10.

[0050] Its preparation method is:

[0051] S1. Stir and blend the peroxide initiator, copolymerized polypropylene elastomer, and antioxidant at 80-120°C under the protection of an inert gas, and prepare the peroxide masterbatch through underwater granulation;

[0052] S2. After mixing the peroxide masterbatch and polypropylene, add them to a twin-screw extruder, and melt and granulate to obtain a melt-blown polypropylene material.

[0053] The screw length-to-diameter ratio of the twin-screw extruder is 48:1~64:1, the extrusion temperature is 180~250°C, and the screw speed is 200~500rpm. Underwater granulation is to melt and mix peroxide initiator, copolymerized polypropylene elastomer, and antioxidant, scrape off by blades in the melt state, and solidify into particles after cooling by circulating water, which is used for underwater granulation The equipment is ...

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Abstract

The invention discloses a melt-blown polypropylene material as well as a preparation method and application thereof. The melt-blown polypropylene material comprises the following components in parts by weight: 90-95 parts of polypropylene, 5-10 parts of a co-polypropylene elastomer, 0.3-0.8 part of a peroxide initiator and 0.1-0.4 part of an antioxidant, wherein the melt index of the co-polypropylene elastomer is greater than or equal to 1000g / 10min, and the melting point of the co-polypropylene elastomer is less than or equal to 100 DEG C. The polypropylene, the co-polypropylene elastomer, the peroxide initiator and the antioxidant are matched with one another to prepare the melt-blown polypropylene material, so that the peroxide initiator can be uniformly dispersed under the condition of extremely small addition amount, and the combustion explosion risk of the low-flash-point peroxide initiator is effectively avoided; and the melt-blown polypropylene material can be produced by using a common mixer process.

Description

technical field [0001] The invention relates to the technical field of modified polypropylene, and more specifically, relates to a melt-blown polypropylene material, a preparation method and an application thereof. Background technique [0002] Melt-blown cloth is mainly made of polypropylene. The fiber diameter of melt-blown cloth is ultra-fine and the arrangement is disorderly. The fiber diameter is about 1 to 5 microns. It has a three-dimensional microporous structure, large specific surface area, small pore size, and high porosity. , Bendable, shapeable, high efficiency and low resistance. Therefore, the application characteristics of filterability, shielding, heat insulation and oil absorption of melt-blown cloth are difficult for non-woven fabrics produced by other independent processes. Meltblown cloth is widely used in medical and industrial masks, thermal insulation materials, filter materials, medical and sanitary materials, oil-absorbing materials, wiping cloths,...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L23/08C08K5/14C08K5/134C08K5/526D01F6/46D01F1/10D04H3/007D04H1/544D04H3/14
CPCC08L23/12D01F6/46D01F1/10D04H1/544D04H3/14D04H3/007C08L2203/12C08L2207/14C08L23/14C08K5/14C08K5/1345C08K5/526C08L23/0815
Inventor 陈锬黄险波叶南飚陈平绪刘乐文郑明嘉杨志骅雷小均
Owner KINGFA SCI & TECH CO LTD
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