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Preparation method of high-barrier polypropylene particle and thin film

A polypropylene film and high-barrier technology, applied in the field of preparation of high-barrier polypropylene particles and films, can solve problems such as poor gas barrier properties

Inactive Publication Date: 2017-01-25
ZHEJIANG MODERN TEXTILE IND RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main application of PP is film for packaging. The barrier property of PP film is better than that of polyethylene, and its water vapor transmission rate is equivalent to that of high-density polyethylene, but its gas barrier property is poor. improve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: A kind of preparation method of high-barrier polypropylene particle adopts following steps:

[0037] A) Get 2.0 parts by mass parts of calcium carbonate whiskers whose characteristic parameters have a diameter of 0.5 μm and a length of 5 μm, 0.2 parts of nanoscale talcum powder, 4.0 parts of a mass fraction of 20% sodium bicarbonate aqueous solution, and 0.2 parts of a characteristic parameter diameter Aluminum borate whiskers with a length of 0.5 μm and a length of 10 μm, 0.2 parts of concavo-convex rod crystals with a length of 0.5 μm and a width of 0.01 μm, and 2.0 parts of muscovite flakes with a thickness of 1 μm and 250 meshes are mixed in a superheated steam reactor at 140 ° C Stir and steam for 45 minutes, irradiate vacuum microwave at 300°C for 2.5h, then immerse in 80 parts of sulfamic acid solution with a mass fraction of 30% for vacuum moisture absorption treatment, heat to 60°C and ultrasonically disperse for 0.5h after absorption, and then St...

Embodiment 2

[0045] Embodiment 2: A kind of preparation method of high-barrier polypropylene particle adopts the following steps:

[0046] A) Get 3.0 parts by mass parts of calcium carbonate whiskers whose characteristic parameter diameter is 1.5 μm and length of 15 μm, 0.3 parts of nanoscale talcum powder, 5.0 parts by mass fraction of 25% sodium bicarbonate aqueous solution, 0.3 parts of characteristic parameter diameter Aluminum borate whiskers with a length of 0.7 μm and a length of 15 μm, 0.3 parts of concave-convex rod crystals with a length of 2.5 μm and a width of 0.05 μm, and 3.0 parts of muscovite flakes with a thickness of 2 μm and 300 meshes are mixed in a superheated steam reactor at 150 ° C Stir and steam for 50 minutes, irradiate with vacuum microwave for 3 hours at 350°C, then immerse in 100 parts of sulfamic acid solution with a mass fraction of 30% for vacuum moisture absorption treatment, heat to 75°C and ultrasonically disperse for 1 hour after absorption, and then stir ...

Embodiment 3

[0054] Embodiment 3: a kind of preparation method of high barrier polypropylene particle, adopt following steps:

[0055] A) get 4.0 parts of calcium carbonate whiskers with a diameter of 3 μm and a length of 20 μm by mass parts, 0.4 parts of nanoscale talcum powder, 6.0 parts of a mass fraction of 30% sodium bicarbonate aqueous solution, and 0.4 parts of a characteristic parameter with a diameter of 20 μm. Aluminum borate whiskers with a length of 1 μm and a length of 20 μm, 0.4 parts of concave-convex rod crystals with a length of 5 μm and a width of 0.10 μm, and 4.0 parts of muscovite flakes with a thickness of 3 μm and 350 meshes were mixed and steamed in a superheated steam reactor at 160 ° C. React for 60 minutes, irradiate with vacuum microwave for 3.5 hours at 400°C, then immerse in 120 parts of sulfamic acid solution with a mass fraction of 30% for vacuum moisture absorption treatment, heat to 95°C and ultrasonically disperse for 1.5 hours after absorption, then stir a...

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Abstract

The invention relates to a preparation method of a high-barrier polypropylene particle and a thin film, and belongs to the technical field of plastic preparation. The preparation method includes steps of mixing and stirring nanoscale talcum powder, sodium bicarbonate water solution, aluminium borate whisker, attapulgite crystal, calcium carbonate whisker and isinglass, and performing microwave radiation; and then immersing mixture in sulfamic acid to dehumidify, heat and stir; taking upper suspended solids to filter, wash and dry; mixing, stirring and drying the obtained material with ethylene / vinyl alcohol copolymer, nanoscale organic montmorillonite, and silane coupling agent; adding polypropylene plastics powder, polyvinylidene chloride, PP-g-MAH and mixing; mulling by a dual-screw and obtaining the high-barrier polypropylene particle; smelting and stretching propylene particles in both directions and obtaining a high-barrier polypropylene film. Compared with the prior art, barrier materials are added in the polypropylene plastics, thus the prepared polypropylene particle and polypropylene thin film have advantages of high intensity and high barrier.

Description

technical field [0001] The invention relates to a preparation method of high-barrier polypropylene particles and films, belonging to the technical field of plastic preparation. Background technique [0002] Polypropylene (PP) is a semi-crystalline thermoplastic with high strength, high hardness, wear resistance, heat resistance, high temperature, excellent moisture resistance and chemical resistance, easy processing and molding, and low price. Polypropylene is usually translucent, odorless and non-toxic, with a melting point of about 164-170°C and a density of 0.91g / cm, which is currently the lightest plastic. The main application of PP is film for packaging. The barrier property of PP film is better than that of polyethylene, and its water vapor transmission rate is equivalent to that of high-density polyethylene, but its gas barrier property is poor. improve. [0003] The remarkable feature of EVOH (ethylene / vinyl alcohol copolymer) is that it has excellent gas barrier a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L27/08C08L29/04C08L51/06C08K13/06C08K9/04C08K9/02C08K7/08C08K3/34C08K3/36
CPCC08L23/12C08J5/18C08J2323/12C08J2427/08C08K2201/003C08K2201/004C08K2201/011C08K2201/014C08L2203/16C08L2205/035C08L27/08C08L29/04C08L51/06C08K13/06C08K9/04C08K9/02C08K7/08C08K3/34C08K3/346C08K3/36
Inventor 陈聪
Owner ZHEJIANG MODERN TEXTILE IND RES INST
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