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Antibacterial polypropylene composition, microporous antibacterial polypropylene foamed sheet, preparation method thereof and foamed sheet

A technology of antibacterial polypropylene and foamed sheet, which is applied in the preparation of microporous antibacterial polypropylene foamed sheet, and in the field of microporous antibacterial polypropylene foamed sheet, which can solve the problem of low foaming ratio of foamed sheet and foaming of foamed sheet. Large pore diameter, uneven cell shape, etc., to achieve the effect of excellent antibacterial performance, low moisture absorption, fine and dense surface of the sheet, and tear resistance

Active Publication Date: 2020-05-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the foamed sheet obtained by using carbon dioxide as a foaming agent has a large cell diameter (about 500 μm) and a high porosity (≥50%), poor mechanical properties, and the material is brittle and cannot be cut into sheets; The obtained foamed sheet has a low foaming ratio (about 5 times), the weight loss is not obvious, the shape of the cells is uneven, and it is extremely difficult to cut

Method used

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  • Antibacterial polypropylene composition, microporous antibacterial polypropylene foamed sheet, preparation method thereof and foamed sheet
  • Antibacterial polypropylene composition, microporous antibacterial polypropylene foamed sheet, preparation method thereof and foamed sheet
  • Antibacterial polypropylene composition, microporous antibacterial polypropylene foamed sheet, preparation method thereof and foamed sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0041] According to a preferred embodiment, the preparation method of the guanidinium salt composite antibacterial agent comprises the following steps:

[0042] a, the aqueous solution of guanidinium salt polymer is contacted with the aqueous solution of zinc salt and / or copper salt, forms transparent liquid mixture;

[0043] b. mixing the liquid mixture obtained in step a with the latex solution crosslinked by radiation, and then adding an anti-migration agent to obtain a mixture;

[0044] c. Spray-dry the mixture obtained in step b to obtain a solid powder, which is then mixed with a dispersant to obtain the guanidinium salt composite antibacterial agent.

[0045] According to the present invention, the mass concentration of the aqueous solution of the guanidinium salt polymer is 10%-40%, preferably 15%-25%; the mass concentration of the aqueous solution of the zinc salt and / or copper salt is 15%-30%, Preferably it is 20%-25%; the mass concentration of the latex solution is...

preparation example 1

[0085] a. Dissolve 1000.0 g of polyhexamethyleneguanidine hydrochloride in water to prepare an aqueous solution with a mass concentration of 20%; prepare 50.0 g of zinc sulfate to prepare an aqueous solution with a mass concentration of 25%. 125.0 g of styrene-butadiene latex solution was directly used after radiation crosslinking, and the concentration was 40%. b. Add the prepared guanidinium salt polymer aqueous solution into the container containing the zinc-containing aqueous solution, and stir while adding until uniformly mixed to form a transparent liquid mixture. c. Add the liquid mixture in step b into the latex solution, and stir while adding until the mixture is uniform. Then, 5.0 g of anti-migration agent a (Covestro 2794XP). d. Dry the mixture obtained in step c with a spray dryer to obtain a solid powder; transfer the obtained solid powder to a high-speed mixer, add 5.0 g of fumed silica as a dispersant, and mix and disperse at a high speed to obtain the presen...

preparation example 2

[0087] a. Dissolve 1000.0 g of polyhexamethylene guanidine propionate in water to make an aqueous solution with a mass concentration of 40%; prepare 100.0 g of zinc acetate to make an aqueous solution with a mass concentration of 15%. 150.0g of nitrile latex solution was directly used after radiation crosslinking, and the concentration was 30%. b. Add the prepared guanidinium salt polymer aqueous solution into the container containing the zinc-containing aqueous solution, and stir while adding until uniformly mixed to form a transparent liquid mixture. c. Add the liquid mixture in step b into the latex solution, and stir while adding until the mixture is uniform. Then, 5.0 g of anti-migration agent a was added to the mixture. d. Dry the mixture obtained in step c with a spray dryer to obtain a solid powder; transfer the obtained solid powder to a high-speed mixer, add 15.0 g of nano-calcium carbonate as a dispersant, and mix and disperse at a high speed to obtain the powder o...

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Abstract

The invention belongs to the field of antibacterial materials and products thereof, and discloses an antibacterial polypropylene composition, a microporous antibacterial polypropylene foamed sheet, apreparation method thereof and a foamed sheet. The antibacterial polypropylene composition contains polypropylene base resin, a guanidine salt composite antibacterial agent and an auxiliary agent, wherein the auxiliary agent contains a cell nucleating agent and an antioxidant, and based on 100 parts by weight of the polypropylene base resin, the content of the guanidine salt composite antibacterial agent is 0.05-2.0 parts by weight, the content of the cell nucleating agent is 0.01-10 parts by weight, and the content of the antioxidant is 0.01-10 parts by weight. The prepared foamed board / sheethas the characteristics of being easy to slice, excellent in mechanical property, antibacterial, simple and convenient in preparation process, large in multiplying power adjustable range, good in thermal insulation property and the like.

Description

technical field [0001] The invention belongs to the field of antibacterial materials and products thereof, and more specifically relates to an antibacterial polypropylene composition, a microporous antibacterial polypropylene foamed sheet, a preparation method of a microporous antibacterial polypropylene foamed sheet, and a A microporous antibacterial polypropylene foam sheet. Background technique [0002] Polypropylene foam material has excellent heat resistance, insulation, heat preservation, cold resistance, oil resistance, chemical resistance, barrier properties and easy recycling. Therefore, compared with the common expanded polystyrene (EPS or XPS) or expanded polyurethane (EPU) on the market, polypropylene foam material has a very broad development and application prospect, and can be applied to logistics cold chain transportation insulation layer, automobile , passenger cars and rail transit vehicles, armrest seats, ceiling floors, heat insulation of internal and ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/12C08L23/16C08L23/06C08L79/00C08K13/02C08K3/34C08K3/26C08J9/12
CPCC08J9/122C08J9/0061C08J9/0071C08J9/0066C08J2203/06C08J2203/08C08J2205/044C08J2323/14C08J2323/12C08J2423/16C08J2423/06C08J2479/00
Inventor 徐耀辉吕明福郭鹏初立秋李杰张师军邵静波吕芸侴白舸白弈青
Owner CHINA PETROLEUM & CHEM CORP
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