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Stiffness increasing master batch, preparation method thereof, polyolefin film and BOPP film

A masterbatch and stiffening agent technology, used in BOPP film, stiffening masterbatch and its preparation, polyolefin film field, can solve problems such as incomplete improvement, improve stiffness and light transmittance, uniform motion, compatibility good effect

Active Publication Date: 2021-12-31
SUZHOU DUCHAMPS ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The modified polyhedral silsesquioxane is achieved by dispersion (tetrahydrofuran) to achieve good dispersion in polypropylene, and its aromatic ketone and polyhedral silsesquioxane grafts are actually not compatible with polypropylene , during the melt co-extrusion process, with the volatilization of the solvent, the viscosity of polyhedral silsesquioxane and polypropylene gradually increases, and phase separation gradually occurs, which cannot completely improve the compatibility between polyhedral silsesquioxane and polymer. Happening

Method used

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  • Stiffness increasing master batch, preparation method thereof, polyolefin film and BOPP film
  • Stiffness increasing master batch, preparation method thereof, polyolefin film and BOPP film
  • Stiffness increasing master batch, preparation method thereof, polyolefin film and BOPP film

Examples

Experimental program
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preparation example Construction

[0050] Specifically, the preparation method of stiffening masterbatch comprises the following steps:

[0051](1) Graphene oxide was prepared by the Hummers method.

[0052] Place the reaction bottle in an ice-water bath, add 100mL of 98% (mass fraction) concentrated sulfuric acid, add a solid mixture of graphite powder and sodium nitrate under magnetic stirring, then slowly add potassium permanganate, stir for 2 hours in an ice bath, and then take it out , stirring and reacting at 40~60°C for 24~72h.

[0053] The product after the above reaction was treated with 5% (mass fraction) of H 2 SO 4 Dilute the solution, add 60 mL H at 90~100℃ 2 o 2 , stirred for 8-12min, the solution turned bright yellow, and centrifuged. The yellow-brown precipitate obtained by centrifugation is graphite oxide, and a large number of carboxyl, hydroxyl, and epoxy active groups are plugged on the surfaces of both sides of the sheet.

[0054] Graphite powder is natural graphite powder with a part...

Embodiment 1

[0077] Embodiment 1 and embodiment 4 respectively provide the preparation method of the stiffening agent, and the stiffening agent is a cage polysilsesquioxane-g-graphene@SiO with a three-dimensional structure 2 .

[0078] Example 1

[0079] The preparation method comprises the following steps:

[0080] (1) Graphene oxide was prepared by the Hummers method.

[0081] Place the reaction bottle in an ice-water bath, add 100mL of concentrated sulfuric acid with a mass fraction of 98%, add a solid mixture of 20g of graphite powder and 10g of sodium nitrate under magnetic stirring, then slowly add 50g of potassium permanganate, and stir in an ice bath Take it out after 2h, and stir and react at 40~60℃ for 24~72h.

[0082] The product after above-mentioned reaction is with the H of massfraction 5% 2 SO 4 Dilute the solution, add 60 mL H at 90~100℃ 2 o 2 , stirred for 8-12min, the solution turned bright yellow, and centrifuged. The yellow-brown precipitate obtained by centrifu...

Embodiment 2

[0097] The difference between this example and Example 1 is that the cage polysilsesquioxane is a cage polysilsesquioxane with full functional groups of hydroxyl groups, the mass of which is 1g, and the graphene@SiO2 The mass is 3g, and the amide condensation reaction is carried out.

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Abstract

The invention discloses a stiffness increasing master batch which comprises a stiffness increasing agent, and the stiffness increasing agent is polyhedral oligomeric silsesquioxane-g-graphene coated SiO2; the polyhedral oligomeric silsesquioxane is amino or hydroxyl full functional group polyhedral oligomeric silsesquioxane; the graphene coated SiO2 is of a core-shell structure of graphene coated silica; the amino group or hydroxyl group of the polyhedral oligomeric silsesquioxane reacts with the carboxyl group on the surface of the graphene coated SiO2 to obtain the polyhedral oligomeric silsesquioxane-g-graphene coated SiO2 with a three-dimensional network structure. A polyhedral oligomeric silsesquioxane-g-graphene coated SiO2 three-dimensional network structure is introduced into the PP matrix to serve as the stiffness increasing agent, PP, the compatilizer and the stiffness increasing agent form a molten community through chemical bonding force, a synergistic effect is generated, the structure is stable, compatibility is good, and the phenomena of phase splitting, precipitation and the like in the processing and using process are avoided.

Description

technical field [0001] The invention relates to the technical field of films, in particular to a stiffening masterbatch and a preparation method thereof, a polyolefin film and a BOPP film. Background technique [0002] Biaxially oriented polypropylene film (BOPP) is a flexible packaging material developed in the 1960s. It is also a high-transparency packaging material with excellent performance and belongs to a type of polypropylene film. [0003] Biaxially oriented polypropylene film (BOPP) is a multi-layer co-extruded film, which is obtained by co-extruding polypropylene particles to form a sheet, and then stretching in both vertical and horizontal directions. Biaxially oriented polypropylene film has the advantages of light weight, non-toxic, odorless, moisture-proof, high mechanical strength, good dimensional stability, good printing performance, good transparency, etc., and is widely used in food, candy, cigarettes, tea , fruit juice, milk, textiles, etc., has the repu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L51/06C08K9/10C08K9/06C08K3/36C08K3/04C08J5/18
CPCC08L23/12C08J5/18C08J2323/12C08J2423/12C08J2451/06C08K2201/017C08L51/06C08K9/10C08K9/06C08K3/36C08K3/042
Inventor 罗吉江符书臻
Owner SUZHOU DUCHAMPS ADVANCED MATERIALS CO LTD