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Polypropylene composite material as well as preparation method and application thereof

A technology of composite materials and polypropylene, applied in the field of polypropylene composite materials and its preparation, can solve the problems of air marks on the surface of parts, decomposition of antifungal agents, poor antioxidants, etc., and achieve good inhibition effect and acceptable appearance Effect

Active Publication Date: 2022-04-19
TIANJIN KINGFA NEW MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the combined use of general antifungal agents and silver-loaded antibacterial agents will improve the antibacterial effect of parts against Staphylococcus aureus and Escherichia coli, but there are two problems in use: (1) conventional silver-loaded antibacterial agents and antibacterial agents When the mold agent is used, it will be affected by the antioxidant in the formula system. The antioxidant with poor compatibility with the system will easily migrate to the surface of the workpiece, and form a competitive relationship with the antibacterial agent and antifungal agent, thereby affecting the quality of the material. overall antibacterial effect
(2) When the conventional silver-loaded antibacterial agent and antifungal agent are used, the antifungal agent is easy to decompose during the subsequent injection molding process (injection molding temperature exceeds 230°C), causing air marks on the surface of the part, which is not very good at present. the solution

Method used

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  • Polypropylene composite material as well as preparation method and application thereof
  • Polypropylene composite material as well as preparation method and application thereof
  • Polypropylene composite material as well as preparation method and application thereof

Examples

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Embodiment 1-15 and comparative example 1-8

[0036] Example and proportional polypropylene composite material components and weight selection is shown in Table 1, Table 2, wherein the embodiment and the preparation method of the proportional polypropylene composite material, comprising the following steps:

[0037] (1) Weigh various raw materials according to the proportion;

[0038] (2) The various raw materials in step (1) are added to the mixer to mix uniformly to obtain the mixed material; in step (2), the temperature of the mixer is 60-70 ° C, and the speed of the mixer is 120-140r / min;

[0039] (3) The mixed material obtained in step (2) is added to the twin screw extruder for extrusion granulation to obtain the polypropylene composite material; wherein the temperature of the twin screw extruder from the feeding section to the machine head is: 80 °C, 190 °C, 190 °C, 190 °C, 190 °C, 190 °C, 190 °C, 190 °C, 190 °C, 190 °C, screw speed of 450 r / min, screw length-to-diameter ratio of 48:1.

[0040] Table 1

[0041]

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Abstract

The invention discloses a polypropylene composite material as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The invention provides a polypropylene composite material. The polypropylene composite material is prepared from the following components in parts by weight: 59-94 parts of polypropylene resin, 5-40 parts of talcum powder, 0.3-2 parts of an antibacterial agent, 0.3-2 parts of an organic mildew preventive and 0.1-0.6 part of an antioxidant, wherein the antibacterial agent is at least one of a silver-loaded aluminum oxide antibacterial agent and a silver-loaded silicon oxide antibacterial agent; the organic mildew preventive is a mixture of thiabendazole, 2-n-octyl-4-isothiazolin-3-one and N-n-butyl-1, 2-benzisothiazolin-3-one, and the organic mildew preventive is a mixture of thiabendazole, 2-n-octyl-4-isothiazolin-3-one and N-n-butyl-1, 2- And the antioxidants are phosphite ester antioxidants and hindered phenol antioxidants. The polypropylene composite material provided by the invention not only can realize an inhibition effect on escherichia coli and staphylococcus aureus, but also has a very good inhibition effect on candida albicans.

Description

Technical field [0001] The present invention relates to the field of polymer material technology, in particular a polypropylene composite material and preparation method and application thereof. Background [0002] Polypropylene because of its wide range of sources, easy to process, is widely used injection molding into automobiles, home appliances, production supplies and other parts, some of which are used in the medical industry, so in addition to the need for materials with certain mechanical properties, but also need materials to have a certain resistance to common pathogenic bacteria, common pathogenic bacteria are Staphylococcus aureus, E. coli, etc., but for infants, gynecological and other medical parts, but also need to have a certain resistance to Candida albicans. [0003] At present, the composite use of general antifungal agents and silver-carrying antibacterial agents will improve the antibacterial effect of the parts on Staphylococcus aureus, E. coli, etc., but t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K3/34C08K9/12C08K3/08C08K3/22C08K5/47C08K5/46C08K5/13C08K5/526
CPCC08K3/34C08K9/12C08K3/08C08K3/22C08K5/47C08K5/46C08K5/13C08K5/526C08K2003/2227C08K2003/0806C08L23/12
Inventor 徐昌竹陈平绪叶南飚陈延安陈桂吉钱文轩陶四平王中林
Owner TIANJIN KINGFA NEW MATERIAL
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