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Strengthened and toughened antibacterial polypropylene material as well as preparation method and application thereof

An antibacterial polypropylene, strengthening and toughening technology, applied in the field of reinforced and toughened antibacterial polypropylene material and its preparation, can solve the problems that do not involve the mechanical properties and antibacterial properties of polypropylene, achieve rapid antibacterial, broaden the application range, and improve mechanical properties Effect

Inactive Publication Date: 2018-03-13
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned patents report the toughening modification of polypropylene, the published research does not involve the research on the mechanical properties and antibacterial properties of polypropylene

Method used

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  • Strengthened and toughened antibacterial polypropylene material as well as preparation method and application thereof
  • Strengthened and toughened antibacterial polypropylene material as well as preparation method and application thereof
  • Strengthened and toughened antibacterial polypropylene material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1). Surface modification of inorganic antibacterial agents

[0040] With ethanol as the dispersion medium, heat to 60 o C. Add silane coupling agent KH550 to disperse for 5 minutes, then add inorganic antibacterial agent zinc oxide to disperse for 30 minutes, dry, grind, and sieve to obtain modified zinc oxide, wherein the dosage of KH550 is 0.5%. figure 1 It is the TEM picture of KH550 modified nano zinc oxide powder in Example 1.

[0041] 2). Preparation of ultra-high molecular weight polyethylene masterbatch

[0042] Mix 30% ultra-high molecular weight polyethylene, 40% linear low-density polyethylene, 15% calcium carbonate, and 15% liquid paraffin in a high-speed mixer. The mixture is extruded and granulated by a twin-screw extruder for later use. The ultra-high molecular weight polyethylene has a molecular weight of 1.5 million, and the extrusion process is: the temperature in the first zone is 190 o C, the temperature in the second zone is 190 o C, the tempera...

Embodiment 2

[0046] 1). Surface modification of inorganic antibacterial agents

[0047] With ethanol as the dispersion medium, heat to 60 o C. Add silane coupling agent KH550 to disperse for 5 minutes, then add inorganic antibacterial agent zinc oxide to disperse for 30 minutes, dry, grind, and sieve to obtain modified zinc oxide, wherein the dosage of KH550 is 0.5%.

[0048] 2). Preparation of ultra-high molecular weight polyethylene masterbatch

[0049] Mix 50% ultra-high molecular weight polyethylene, 30% linear low-density polyethylene, 10% calcium carbonate, and 10% liquid paraffin in a high-speed mixer. The mixture is extruded and granulated by a twin-screw extruder for later use, wherein the ultra-high molecular weight polyethylene has a molecular weight of 1.5 million, and the extrusion process is: the temperature in the first zone is 200 o C, the temperature in the second zone is 200 o C, three zone temperature 210 o C, four zone temperature 210 o C, five zone temperature 210...

Embodiment 3

[0053] 1). Surface modification of inorganic antibacterial agents

[0054] Heat to 70°C with isopropanol as dispersion medium o C. Add silane coupling agent DL602 to disperse for 5 minutes, then add inorganic antibacterial agent zinc oxide to disperse for 30 minutes, dry, grind, and sieve to obtain modified zinc oxide, in which the amount of DL602 is 2%.

[0055] 2). Preparation of ultra-high molecular weight polyethylene masterbatch

[0056] Mix 30% ultra-high molecular weight polyethylene, 40% linear low-density polyethylene, 15% talc, and 15% liquid paraffin in a high-speed mixer. The mixture is extruded and granulated by a twin-screw extruder for later use. The ultra-high molecular weight polyethylene has a molecular weight of 1.5 million, and the extrusion process is: the temperature in the first zone is 190 o C, the temperature in the second zone is 190 o C, the temperature in the third zone is 200 o C, four zone temperature 200 o C, five zone temperature 200 o C, ...

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Abstract

The invention relates to a strengthened and toughened antibacterial polypropylene material as well as a preparation method and application thereof. The strengthened and toughened antibacterial polypropylene material consists of the following raw materials in percentage by weight: 54-87.7% of polypropylene, 0.5-5% of an inorganic antibacterial agent, 10-30% of ultra high molecular weight polyethylene master batch, 1-8% of grafted polypropylene, 0.2-1% of a stabilizer, 0.2-1% of a dispersant and 0.4-1% of an antioxidant. The preparation method comprises the following steps: preparing master batch from ultra high molecular weight polyethylene, and further performing high-speed mixing extrusion on the surface modified inorganic antibacterial agent, polypropylene, the ultra high molecular weight polyethylene master batch and the grafted polypropylene, thereby obtaining the polypropylene composite material which is high in strength, good in toughness and good in antibacterial property. On premise that the polypropylene is excellent in antibacterial activity because of the inorganic antibacterial agent, the polypropylene is strengthened and toughened through organic super-long chain macromolecules. Therefore, the polypropylene material provided by the invention is not only excellent in antibacterial property, but also outstanding in mechanical property.

Description

technical field [0001] The invention relates to a reinforced and toughened antibacterial polypropylene material and its preparation method and application, belonging to the technical field of polymer materials. Background technique [0002] The data show that various germs are contaminated and breed on the surface of various plastic products that are in contact with in daily life. For example, the bacteria on toilets in hotels and restaurants include Escherichia coli, Staphylococcus aureus, Staphylococcus albus, Bacillus subtilis, Tetralococcus, etc., with 40 colonies; public telephone microphones with 50 colonies; door handles of hospitals and hotels The number of colonies can even be as high as 200 or more. With the improvement of people's material living standards, everyone's requirements for hygiene and health are getting higher and higher. Since the 1990s, developed countries represented by Japan have carried out research, development and production of antibacterial m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L23/06C08L23/08C08L51/06C08K13/06C08K9/06C08K3/22C08J3/22B29B9/06B29C47/92B29C48/92
CPCC08L23/12B29B9/06B29C48/92B29C2948/92514B29C2948/9259B29C2948/92704C08J3/226C08J2323/12C08J2323/14C08J2423/06C08J2423/08C08K2003/2241C08K2003/2296C08K2201/011C08L23/14C08L2205/035C08L2207/068C08L23/06C08L23/0815C08L51/06C08K13/06C08K9/06C08K3/22
Inventor 何丹农林琳陈超金彩虹
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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