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Hydrophobic durable antibacterial polypropylene composite material and preparation method thereof

An antibacterial polypropylene and composite material technology, which is applied in the field of polypropylene composite materials, can solve the problems of antibacterial materials such as difficult antibacterial effect, antibacterial agent failure, and antibacterial agent difficulty, etc., to achieve easy removal, good stain resistance, and good self-cleaning sexual effect

Pending Publication Date: 2022-03-22
上海日之升科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These pollutions will make it difficult for the antibacterial agent on the surface of the material to exert an effective antibacterial effect. In addition, the bacteria killed on the surface of the antibacterial material will continue to deposit and cover the antibacterial agent, which will cause the antibacterial agent to fail. For example, dust It will cover the surface of the material or the killed bacteria will deposit on the surface of the material, which will also make it difficult for the antibacterial material to effectively exert its antibacterial effect

Method used

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  • Hydrophobic durable antibacterial polypropylene composite material and preparation method thereof
  • Hydrophobic durable antibacterial polypropylene composite material and preparation method thereof
  • Hydrophobic durable antibacterial polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment provides a hydrophobic and durable antibacterial polypropylene composite material, the specific steps of its preparation method are as follows:

[0033] (1) Weigh 98 parts of polypropylene resin, 0.4 parts of antibacterial agent, 2 parts of silicone oil, and 0.8 parts of auxiliary agent according to the weight ratio, and stir and mix in a mixer for 5 minutes.

[0034] (2) Add the above-mentioned mixed materials into a twin-screw extruder, melt, extrude, granulate, and dry to obtain a durable antibacterial hydrophobic self-cleaning polypropylene composite material. The rotational speed of the twin-screw extruder is 400 rpm, and the processing temperature is 200°C.

[0035] The antibacterial rate of Escherichia coli and Staphylococcus aureus of the prepared hydrophobic and durable antibacterial polypropylene composite material is 95%; the antibacterial attenuation period of the durable antibacterial polypropylene composite material is 4 months. The hydrop...

Embodiment 2

[0037] This embodiment provides a hydrophobic and durable antibacterial polypropylene composite material, the specific steps of its preparation method are as follows:

[0038] (1) Preparation of hydrophobic functional masterbatch

[0039] Mix polyethylene, ethylene-octene copolymer, PTFE and hydrophobic agent in a mixer for ten minutes and wait until they are uniform, then put the mixed material into a twin-screw extruder, and undergo melting, extrusion, granulation, The hydrophobic functional masterbatch is obtained by drying, and its SEM image is as follows figure 1 shown.

[0040]Among them, the mass ratio of polyethylene, ethylene-octene copolymer, PTFE and hydrophobic agent is: 100:17:10:15; the speed of the twin-screw extruder is 400 rpm, and the processing temperature is 180°C;

[0041] (2) Weigh 93 parts of polypropylene resin, 0.4 part of antibacterial agent, 5 parts of hydrophobic functional masterbatch, 2 parts of silicone oil and 0.8 part of auxiliary agent accor...

Embodiment 3

[0045] This embodiment provides a hydrophobic and durable antibacterial polypropylene composite material, the specific steps of its preparation method are as follows:

[0046] (1) Preparation of hydrophobic functional masterbatch

[0047] Mix polyethylene, ethylene-octene copolymer and hydrophobic agent in a mixer for ten minutes and wait until they are uniform, then put the mixed material into a twin-screw extruder, and process it through melting, extrusion, granulation, and drying. Obtain hydrophobic functional masterbatch.

[0048] Among them, the mass ratio of polyethylene, ethylene-octene copolymer, PTFE and hydrophobic agent is: 100:17:10:15; the speed of the twin-screw extruder is 400 rpm, and the processing temperature is 180°C;

[0049] (2) Weigh 93 parts of polypropylene resin, 0.8 parts of antibacterial agent, 2 parts of silicone oil, 5 parts of functional hydrophobic masterbatch and 0.8 parts of auxiliary agent according to the weight ratio, stir and mix in the mi...

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Abstract

The invention relates to a hydrophobic durable antibacterial polypropylene composite material and a preparation method thereof. The hydrophobic lasting antibacterial polypropylene composite material provided by the invention comprises the following components in parts by mass: 75-100 parts of polypropylene; 5-15 parts of functional hydrophobic master batch; 0.3-0.8 part of a silver ion antibacterial agent taking phosphate glass as a carrier; 1-3 parts of silicone oil; and 0.5-1 part of an auxiliary agent. The functional hydrophobic master batch comprises an ethylene-octylene copolymer, low-density polyethylene, PTFE (Polytetrafluoroethylene) and a hydrophobic agent in a mass ratio of (15-20): 100: 15: (5-15). The polarity of the surface of the prepared polypropylene compound is improved, and due to the structural characteristics of the composite polypropylene material, the antibacterial property in the material can continuously migrate to the surface, so that the condition that an antibacterial agent loses efficacy in a complex environment is overcome.

Description

technical field [0001] The invention belongs to the technical field of polypropylene composite materials, and in particular relates to a hydrophobic and durable antibacterial polypropylene composite material and a preparation method thereof. Background technique [0002] Due to its low density, easy processing, good transparency and gloss, excellent acid and alkali resistance, and excellent resistance to organic solvent corrosion, polypropylene is widely used in medical equipment, automobiles, home appliances, kitchen and bathroom, and clothing industries. However, the surface of polypropylene material is easy to breed bacteria during long-term contact with a humid environment, which will cause food safety and hygiene problems during use by consumers. Most of the existing antibacterial materials on the market use organic or inorganic antibacterial agents for antibacterial modification. However, the attenuation of the antibacterial effect in the later stage due to the migrati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/06C08L23/08C08L27/18C08L83/04C08K9/12
CPCC08L23/12C08L83/04C08K9/12C08L23/06C08L23/0815C08L27/18
Inventor 侯江松陈晓东张浩徐东东申维新
Owner 上海日之升科技有限公司
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