Melt-blown polypropylene material composition and preparation method thereof

A technology of melt-blown polypropylene and material composition, which is applied in the directions of single-component polyolefin rayon filament, rayon manufacturing, fiber chemical characteristics, etc. prone to breakage

Pending Publication Date: 2021-05-18
广东国恩塑业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While satisfying high fluidity, the toughness of the material usually drops significantly. The produced melt-blown cloth feels hard and brittle. On the one hand, it is prone to fracture problems during the production process, which affects production efficiency. In addition, the masks produced by using hard-feeling melt-blown cloth are also

Method used

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  • Melt-blown polypropylene material composition and preparation method thereof
  • Melt-blown polypropylene material composition and preparation method thereof
  • Melt-blown polypropylene material composition and preparation method thereof

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Experimental program
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Embodiment and

[0035] Embodiment and comparative example:

[0036] Preparation of meltblown material:

[0037] (1) Polypropylene, free radical initiator, nucleating agent, antioxidant, and lubricant are placed in a mixer and mixed evenly, the mixer speed is 100rpm, and the mixing time is 5min;

[0038] (2) Melt and mix the mixed raw materials through a twin-screw extruder, and extrude and granulate to obtain melt-blown polypropylene. The screw speed of the twin-screw extruder is 400rpm, and the melting temperature of the extruder is set at 180~ 260°C.

[0039] Preparation of electret masterbatch:

[0040] (1) According to the ratio in Table 1, put melt-blown polypropylene, waterproof and oil-repellent agent, softener, inorganic electret powder, organic electret powder, stearate, hindered amine weather resistance agent, and antioxidant into the mixture Mix evenly in the machine, the speed of the mixer is 200rpm, and the mixing time is 10min;

[0041] (2) Melt and mix the mixed raw materials

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PUM

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Abstract

The invention discloses a melt-blown polypropylene material composition and a preparation method thereof. The melt-blown polypropylene material composition comprises 95-99 parts of a melt-blown polypropylene material and 1-5 parts of electret master batch. The melt-blow polypropylene material is prepared from the following components in parts by weight: 98 to 99.85 parts of polypropylene, 0.1 to 1 part of free radical type initiator, 0.05 to 0.3 part of nucleating agent, 0 to 0.1 part of antioxidant and 0 to 0.3 part of lubricant. The electret master batch comprises the following components: 40-69.5 parts of melt-blown polypropylene, 2-5 parts of a waterproof and oil-proof agent, 5-10 parts of a softener, 10-15 parts of inorganic electret powder, 10-20 parts of organic electret powder, 1-3 parts of stearate, 1-3 parts of a hindered amine weather-resistant agent, 0.5-1 part of an antioxidant and 1-3 parts of a coupling agent. As the waterproof and oil-proof agent, the softener, the hindered amine weather-proof agent and the antioxidant can react with the free radical initiator in the melt-blown material system, the melt-blown polypropylene and the electret master batch are independently produced and mixed for use. According to the preparation method, a UV lamp box is placed before pelletizing, material strips are irradiated by a UV lamp, peroxide residues which do not react completely are completely cleaned, and zero peroxide residues are achieved.

Description

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Claims

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Application Information

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Owner 广东国恩塑业发展有限公司
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