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Antibacterial mildew-proof polyethylene composition and foamed beads, preparation method thereof, and molded body

A technology of polyethylene foaming, antibacterial and anti-mildew, which is applied in the preparation of anti-bacterial and anti-mildew polyethylene foam beads, and the field of anti-bacterial and anti-mildew polyethylene foam beads, which can solve the problems of product shape and particle size control. Good, cumbersome steps, complex process and other problems, to achieve the effects of excellent antibacterial and mildew resistance, uniform pore size distribution, and simple production and operation

Inactive Publication Date: 2019-12-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It can be seen from the above patent documents that the conditions for preparing guanidinium salt polymer powder in CN101037503A and CN1350022A are relatively harsh and the process is relatively complicated; in CN1445270A and US7282538B2, it is necessary to make guanidinium salt polymer into antibacterial masterbatch, the steps are cumbersome and the cost is high; CN102453315A, CN102453316A need to use sodium pyrithione, and the cost is relatively high; CN102453273A needs to operate at a certain temperature in the process of preparing antibacterial agent, the energy consumption is large, and the shape and particle size of the product after drying and crushing are not well controlled

Method used

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  • Antibacterial mildew-proof polyethylene composition and foamed beads, preparation method thereof, and molded body
  • Antibacterial mildew-proof polyethylene composition and foamed beads, preparation method thereof, and molded body
  • Antibacterial mildew-proof polyethylene composition and foamed beads, preparation method thereof, and molded body

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preparation example Construction

[0050] According to the present invention, the preparation method of described guanidinium salt composite antibacterial agent comprises the following steps:

[0051] 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;

[0052] 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;

[0053] 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.

[0054] Wherein, the latex can be determined according to the type of final required powder rubber, and the latex can be styrene-butadiene latex, carboxylated styrene-butadiene latex, nitrile latex, carboxylated nitrile latex, acrylate latex, ethylene vinyl acetate latex, silicon At least one of rubber latex and styr...

Embodiment 1

[0103] (1) Preparation of guanidinium salt composite antibacterial agent

[0104] a, polyhexamethyleneguanidine hydrochloride (Shanghai Gaoju Industrial Co., Ltd.) 1000.0g is dissolved in water and is mixed with the aqueous solution of mass concentration 20%; It is the aqueous solution of 25% mass concentration that 50.0g zinc sulfate is mixed with, 125.0 The g 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 to the latex solution, and stir while adding until the mixture is uniform. Then, add 5.0 g of anti-migration agent (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-sp...

Embodiment 2

[0125] (1) Preparation of guanidinium salt composite antibacterial agent

[0126] a, polyhexamethylene guanidine propionate (Shanghai Gaoju Industrial Co., Ltd.) 1000.0g is dissolved in water and is mixed with the aqueous solution of mass concentration 40%; 100.0g zinc acetate is mixed with the aqueous solution that mass concentration is 15%, 150.0 The g 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 to the latex solution, and stir while adding until the mixture is uniform. Then, add 5.0 g of anti-migration agent (Covestro 2794XP). d. The mixture obtained in step c is dried by a spray dryer to obtain a solid powder; the obtained solid powder is transferred to a high-speed mixe...

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Abstract

The invention belongs to the field of antibacterial materials and products thereof, and relates to an antibacterial mildew-proof polyethylene composition and foamed beads, a preparation method thereof, and a molded body. The antibacterial and mildewproof polyethylene composition contains polyethylene base resin, a guanidine salt composite antibacterial agent, a mildewproof agent and an auxiliary agent, wherein the auxiliary agent contains a foam nucleating agent and an optional antioxidant; based on 100 parts by weight of the polyethylene base resin, the content of the guanidine salt compositeantibacterial agent is 0.05-2.0 parts by weight, the content of the mildew preventive is 0.01-5.0 parts by weight, the content of the foam nucleating agent is 0.01-10 parts by weight, and the contentof the antioxidant is 0-10 parts by weight. The antibacterial and mildewproof polyethylene composition is good in antibacterial and mildewproof effects, the water resistance is also improved, the foamed beads prepared from the antibacterial and mildewproof polyethylene composition have impact resistance and low molding temperature, and the obtained molded product is excellent in antibacterial andmildewproof performance and high in compression strength.

Description

technical field [0001] The invention belongs to the field of antibacterial materials and products thereof, and more specifically relates to the preparation of an antibacterial and antimold polyethylene composition, an antibacterial and antimold polyethylene foam beads, and an antibacterial and antimold polyethylene foam beads method, and an antibacterial and antifungal polyethylene foamed bead molded body. Background technique [0002] Today, large-scale industrial production of polyethylene foam products usually uses extrusion foaming technology. Compared with the traditional extrusion foaming method, when preparing polyethylene foam products by the reactor immersion method, there is no high-shear screw extrusion of the extrusion method acting on the polyethylene melt, and the entanglement of the polymer chains ensures that the melt has enough strength. During the cell growth process, the biaxial stretching of the cell wall is not easy to break; at the same time, the PE c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L79/00C08J9/12
CPCC08J9/0061C08J9/122C08J2203/06C08J2323/08C08J2479/00C08J2203/182
Inventor 郭鹏吕明福徐耀辉张师军初立秋李杰张琦尹华
Owner CHINA PETROLEUM & CHEM CORP
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