Antibacterial polycarbonate composite and preparation method thereof

Patent metadata

Field	Value
Publication number	US-12129376-B2
Application number	US-201917050833-A
Country	US
Kind code	B2
Filing date	Oct 30, 2019
Priority date	Nov 21, 2018
Publication date	Oct 29, 2024
Grant date	Oct 29, 2024

Abstract

An antibacterial polycarbonate composite includes the following components in parts by weight: 100 parts of a polycarbonate, 0.01-5 parts of a nanometer metal oxide, and 0.01-5 parts of a silicon-containing high-molecular polymer; and based on a total weight of the antibacterial polycarbonate composite, a content of a silver ion is 100-1200 ppm.

First claim

What is claimed is:

1. An antibacterial polycarbonate composite, comprising the following components:
100 parts of polycarbonate in parts by weight;
0.01-5 parts of nanometer metal oxide in parts by weight;
0.01-5 parts of silicon-containing high-molecular polymer in parts by weight; and
100-1200 ppm of a silver ion, based on a total weight of the antibacterial polycarbonate composite,
wherein the nanometer metal oxide is calcium oxide and a particle size D50 of the calcium oxide is 200 nm to 800 nm,
the silicon-containing high-molecular polymer is at least one selected from siloxane polymers, and
a molecular weight of the siloxane polymers is 200,000-300,000.

2. The antibacterial polycarbonate composite according to claim 1 , comprising the following components:
100 parts of the polycarbonate in parts by weight;
0.05-2.5 parts of the nanometer metal oxide in parts by weight;
0.1-2.5 parts of the silicon-containing high-molecular polymer in parts by weight; and
100-1200 ppm of the silver ion, based on a total weight of the antibacterial polycarbonate composite.

3. The antibacterial polycarbonate composite according to claim 2 , wherein the silver ion is derived from a silver ion antibacterial agent.

4. The antibacterial polycarbonate composite according to claim 2 , wherein the antibacterial polycarbonate composite further comprises 0-2 parts of a color powder in parts by weight.

5. The antibacterial polycarbonate composite according to claim 2 , wherein the antibacterial polycarbonate composite further comprises 0-5 parts of at least one of an antioxidant, a lubricant, a weather resistant agent and a release agent in parts by weight.

6. The antibacterial polycarbonate composite according to claim 1 , wherein the silver ion is derived from a silver ion antibacterial agent.

7. The antibacterial polycarbonate composite according to claim 1 , wherein the antibacterial polycarbonate composite further comprises 0-2 parts of a color powder in parts by weight.

8. The antibacterial polycarbonate composite according to claim 1 , wherein the antibacterial polycarbonate composite further comprises 0-5 parts of at least one of an antioxidant, a lubricant, a weather resistant agent and a release agent in parts by weight.

9. A preparation method of the antibacterial polycarbonate composite according to claim 6 , comprising the following steps:
the polycarbonate, the nanometer metal oxide, the silicon-containing high-molecular polymer and the silver ion antibacterial agent are mixed evenly in a high-speed mixing machine according to a ratio, then added to a twin-screw extruder, melted and mixed at a temperature of 240° C.-260° C., and then granulated, cooled and dried, to obtain the antibacterial polycarbonate composite.

10. A preparation method of the antibacterial polycarbonate composite according to claim 3 , comprising the following steps:
the polycarbonate, the nanometer metal oxide, the silicon-containing high-molecular polymer and the silver ion antibacterial agent are mixed evenly in a high-speed mixing machine according to a ratio, then added to a twin-screw extruder, melted and mixed at a temperature of 240° C.-260° C., and then granulated, cooled and dried, to obtain the antibacterial polycarbonate composite.

Assignees

• Kingfa Science & Technology Co

Inventors

• Ding Chao
• Li Mingkun
• Cen yin
• Peng minle
• Ai Junwei
• Wu Jun

Classifications

• C08J2483/04

  Polysiloxanes · CPC title

• C08J2369/00

  Characterised by the use of polycarbonates; Derivatives of polycarbonates · CPC title

• C08J3/203

  Solid polymers with solid and/or liquid additives · CPC title

• C08K2201/011

  Nanostructured additives · CPC title

• B29B9/12

  characterised by structure or composition · CPC title