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High-antibacterial polypropylene material as well as preparation method and application thereof

A polypropylene material and polypropylene technology, applied in the field of high antibacterial polypropylene material and its preparation, can solve the problems of reduced sterilization efficiency, easy decomposition or inactivation, and inability to antibacterial performance, and achieve broad application prospects and good antibacterial performance , the effect of reducing the contact temperature

Active Publication Date: 2022-03-11
广东烽业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, inorganic antibacterial agents mainly use metals such as silver, copper, and zinc to release good bactericidal properties. However, metal elements are inevitably used in such antibacterial agents. When used to prepare non-woven masks that directly contact with human respiratory organs, etc. products, the presence of metals can cause potential hazards
Organic antibacterial agents or natural antibacterial agents do not contain metal elements, but their own stability is poor, because polypropylene is mixed and extruded at high temperature, it is easy to decompose or inactivate, so that it cannot play its own antibacterial properties well. performance, reducing sterilization efficiency

Method used

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  • High-antibacterial polypropylene material as well as preparation method and application thereof
  • High-antibacterial polypropylene material as well as preparation method and application thereof
  • High-antibacterial polypropylene material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0025] The preparation method of polypropylene material in embodiment 1-5, comparative example 1-4, comprises the following steps: the polypropylene that isotacticity is greater than 90%, the low isotactic polypropylene that isotacticity is 40-60%, composite After the antibacterial agent and processing aid are mixed in proportion, the material is first heated to 160°C for banburying for 10-20 minutes, and then extruded and granulated by a screw extruder to obtain the polypropylene composite material, wherein the screw extruded The machine includes 12 temperature control zones, the temperature of the temperature control zone 1 is 120-130°C, the temperature of the temperature control zone 2 is 160-190°C, the temperature of the temperature control zone 3 is 200-210°C, and the temperature of the temperature control zone 4 is 210-220°C ℃, the temperature of temperature control zone 5 is 215-220 ℃, the temperature of temperature control zone 6 to temperature control zone 12 is 180-20...

Embodiment 4

[0038]The antibacterial performance test results of Example 4 and Examples 6-10 are shown in Table 4 below.

[0039] Table 4. The antibacterial performance test results of embodiment 4, embodiment 6-10 (inhibition rate: %)

[0040]

[0041] As can be seen from Tables 3 and 4, the antibacterial performance of the polypropylene material prepared by Example 4 and Example 6-10 is good, wherein, phenylglycine, chitosan and ethylenediaminetetraacetic acid in the composite antibacterial agent of Example 8 The weight ratio of phenylglycine: chitosan: ethylenediaminetetraacetic acid = 2:1:1, the corresponding polypropylene material has the highest antibacterial rate against the four kinds of bacteria, indicating that under this ratio, the composite antibacterial agent can Play the best antibacterial and antibacterial effect. The weight ratio of phenylglycine, chitosan and ethylenediaminetetraacetic acid in the composite antibacterial agent of embodiment 6 and embodiment 10 is not w...

Embodiment 11

[0043] The raw material composition and preparation method of this embodiment and embodiment 4 are basically the same, the only difference is: the melt mass flow rate of the low isotactic polypropylene used in this embodiment is 390 g / 10min.

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Abstract

The invention provides a high-antibacterial polypropylene material as well as a preparation method and application thereof, and relates to the technical field of general-purpose plastics. The polypropylene material provided by the invention comprises the following components in parts by weight: 70-85 parts of polypropylene of which the isotacticity is greater than 90%, 5-30 parts of low isotactic polypropylene, 1-2 parts of a composite antibacterial agent and 2-5 parts of a processing aid, and the composite antibacterial agent is a compound of phenylglycine, chitosan and ethylenediaminetetraacetic acid. Phenylglycine, chitosan and ethylenediaminetetraacetic acid are compounded to serve as a composite antibacterial agent, low isotactic polypropylene with a certain proportion is introduced into the raw materials, the prepared polypropylene material has good antibacterial performance on candida albicans, escherichia coli, klebsiella pneumoniae and staphylococcus aureus, and the antibacterial rate can reach 99% or above. A metal antibacterial agent is not adopted, the content of heavy metal in the prepared polypropylene material is lower than the lowest industrial standard, and the application safety of the polypropylene material is greatly improved.

Description

technical field [0001] The invention relates to the technical field of general plastics, in particular to a high antibacterial polypropylene material and its preparation method and application. Background technique [0002] Mask non-woven materials are required to have good antibacterial and bactericidal properties. Currently commonly used antibacterial agents include inorganic antibacterial agents, organic antibacterial agents and natural antibacterial agents. Among them, inorganic antibacterial agents mainly use metals such as silver, copper, and zinc to release good bactericidal properties. However, metal elements are inevitably used in such antibacterial agents. When used to prepare non-woven masks that directly contact with human respiratory organs, etc. When using products, the presence of metals can cause potential hazards. Organic antibacterial agents or natural antibacterial agents do not contain metal elements, but their own stability is poor, because polypropyle...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L5/08C08K5/17D01F8/06D01F1/10
CPCC08L23/12D01F8/06D01F1/103C08K2201/014C08L2203/12C08L5/08C08K5/175
Inventor 许慈芸
Owner 广东烽业科技有限公司