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LDPE (low-density polyethylene) antibacterial plastic and preparation method thereof

A technology of antibacterial plastics and antibacterial agents, which is applied in the field of LDPE plastics, can solve problems such as short service life, poor heat resistance, and poor safety, and achieve the effects of easy processing, improved mechanical properties, and improved flexibility

Inactive Publication Date: 2019-03-01
NANTONG YIXUAN IND DESIGN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic antibacterial agents have a fast sterilizing speed, and some can effectively kill and inhibit mold. However, in addition to poor safety in use, they also have problems such as poor heat resistance, easy hydrolysis, and short service life.

Method used

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  • LDPE (low-density polyethylene) antibacterial plastic and preparation method thereof
  • LDPE (low-density polyethylene) antibacterial plastic and preparation method thereof
  • LDPE (low-density polyethylene) antibacterial plastic and preparation method thereof

Examples

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Effect test

preparation example Construction

[0036] A preparation method of LDPE antibacterial plastic includes the following steps:

[0037] 1) Premix the antibacterial agent and zinc stearate to obtain a premix;

[0038] 2) Mix the premix obtained in step (1) with low-density polyethylene, polyamide fiber, compatibilizer and germanium oxide. After mixing uniformly, add plasticizer, copper dialkyl dithiophosphate and iso Mix the thiazolinone thoroughly to obtain a mixture;

[0039] 3) The mixture obtained in the above step (2) is granulated and dried at a temperature of 160-180°C to obtain an antibacterial plastic.

Embodiment 1

[0042] An LDPE antibacterial plastic, mainly composed of the following parts by weight of raw materials:

[0043]

[0044] The number average molecular weight of the ethylene-tetrafluoroethylene copolymer is 2000 g / mol.

[0045] A preparation method of LDPE antibacterial plastic includes the following steps:

[0046] 1) Premixing 2-methoxy-N-acetoacetylaniline, zinc oxide and zinc stearate to obtain a premix;

[0047] 2) Mix the premix obtained in step (1) with low-density polyethylene, polyamide fiber, ethylene-tetrafluoroethylene copolymer and germanium oxide, and after mixing uniformly, add trioctyl citrate, dialkyl two Copper thiophosphate and isothiazolinone are mixed thoroughly to obtain a mixture;

[0048] 3) The mixture obtained in the above step (2) is granulated and dried at a temperature of 160° C. to obtain an antibacterial plastic.

Embodiment 2

[0050] An LDPE antibacterial plastic, mainly composed of the following parts by weight of raw materials:

[0051]

[0052] The number average molecular weight of the ethylene-tetrafluoroethylene copolymer is 2100 g / mol.

[0053] A preparation method of LDPE antibacterial plastic includes the following steps:

[0054] 1) Premixing 2-methoxy-N-acetoacetylaniline, zinc oxide and zinc stearate to obtain a premix;

[0055] 2) Mix the premix obtained in step (1) with low-density polyethylene, polyamide fiber, ethylene-tetrafluoroethylene copolymer and germanium oxide, and after mixing uniformly, add trioctyl citrate, dialkyl two Copper thiophosphate and isothiazolinone are mixed thoroughly to obtain a mixture;

[0056] 3) The mixture obtained in the above step (2) is granulated and dried at a temperature of 170° C. to obtain an antibacterial plastic.

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Abstract

The invention discloses LDPE (low-density polyethylene) antibacterial plastic, which is mainly prepared from the following raw materials in parts by weight: 100 parts of LDPE, 4-8 parts of an antibacterial agent, 2-3 parts of zinc stearate, 3-5 parts of a compatilizer and 1-2 parts of a plasticizer. The LDPE antibacterial plastic adopts 2-methoxy-N-acetoacetyl aniline and zinc oxide as the antibacterial agent, and through reasonable compatibility, the best pathogenic microorganism killing effect and growth inhibiting effect can be achieved; the LDPE is used as a main body, and the zinc stearate can improve the thermostability of the LDPE; an ethylene-tetrafluoroethylene copolymer is used as the compatilizer; the flexibility and easy-processing performance of the LDPE are improved by addingacetyl trioctyl citrate; the antioxidant performance of the LDPE is improved by adding dialkyl copper dithiophosphate; mechanical properties, heat resistance, abrasion resistance, chemical resistance, flame retardance and easy-processing performance of the LDPE are improved by adding polyamide fibers.

Description

Technical field [0001] The invention relates to an LDPE plastic, in particular to an LDPE antibacterial plastic and a preparation method thereof. Background technique [0002] At present, plastic products occupy a very important position in people's daily life and industrial and agricultural production. However, with the change of people's health concept, it is gradually realized that a large number of various kinds of disease-curing bacteria harmful to human health will grow on the surface of plastic products. In order to effectively prevent and kill the bacteria attached to the plastic surface, antibacterial agents are usually added to the plastic to make antibacterial plastics, so that the plastic itself has antibacterial properties, and can kill or kill bacteria contaminated on the plastic within a certain period of time. Inhibition, compared with conventional chemical and physical methods, the use of antibacterial plastics has a long sterilization time, which is economical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08L77/00C08K13/02C08K5/098C08K5/18C08K3/22C08K5/11C08K5/47
CPCC08K2003/2296C08L23/06C08L2201/02C08L2201/08C08L2203/16C08L2205/03C08L2205/08C08L2205/16C08L2207/066C08L23/0892C08L77/00C08K13/02C08K5/098C08K5/18C08K3/22C08K5/11C08K5/47
Inventor 戴世元
Owner NANTONG YIXUAN IND DESIGN CO LTD
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