High-stability and broad-spectrum antibacterial PMMAASA alloy material based on molecular online self-assembly technology and preparation method thereof

A self-assembly technology and high-stability technology, applied in the field of polymer materials, can solve the problems of poor broad-spectrum of inorganic antibacterial agents, lack of antibacterial properties of materials, poor antibacterial stability, etc., to achieve apparent viscosity reduction, Increased impact strength, long-lasting and stable effect

Pending Publication Date: 2021-11-19
华合新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although organic antibacterial agents have obvious advantages in terms of broad spectrum, stability, and durability, their characteristics of not being resistant to high temperature and shearing in the process of melt blending are technical difficulties that need to be solved urgently. Therefore, the existing In the antibacterial solution of PMMA, CN201911012396.0 adopts the surface coating treatment of antibacterial coating, but the loss of the surface coating during use will easily lead to the loss of antibacterial performance of the material, and its long-term antibacterial stability is not good; CN201911012396. 0 uses an inorganic nano-silver antibacterial agent system that is more resistant to high temperature and shear. Although the processing performance is stable, the broad-spectrum of the inorganic antibacterial agent itself is not good.

Method used

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  • High-stability and broad-spectrum antibacterial PMMAASA alloy material based on molecular online self-assembly technology and preparation method thereof
  • High-stability and broad-spectrum antibacterial PMMAASA alloy material based on molecular online self-assembly technology and preparation method thereof
  • High-stability and broad-spectrum antibacterial PMMAASA alloy material based on molecular online self-assembly technology and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Take by weighing ASA terpolymer, guanidine polymer antibacterial agent by the data of embodiment 1 shown in table 1 and mix homogeneously, obtain mixed raw material A; Take PMMA resin, auxiliary dispersant by described weight fraction, mix homogeneously , to obtain mixed raw material B.

[0038] The mixed raw material A is fully dried, and then placed in the main feeding bin of a closely meshing co-rotating twin-screw extruder, and fed into the barrel of the extruder through the feeding screw, and the isothilones antibacterial agent The aqueous solution is delivered to the barrel of the extruder through the feeding hole of the second section of the barrel through the high-precision liquid metering pump; the diameter of the twin-screw extruder used is 35mm, the length-to-diameter ratio L / D is 56, and the main barrel is fed from The temperature settings of each zone from the mouth to the outlet of the machine head are: 160°C, 200°C, 210°C, 215°C, 220°C, 220°C, 220°C, 220°...

Embodiment 2

[0041] Take by weighing ASA terpolymer, guanidine polymer antibacterial agent by the data of embodiment 2 shown in table 1 and mix homogeneously, obtain mixed raw material A; Take PMMA resin, auxiliary dispersant by described weight, mix homogeneously , to obtain mixed raw material B.

[0042] The mixed raw material A is fully dried, and then placed in the main feeding bin of a closely meshing co-rotating twin-screw extruder, and fed into the barrel of the extruder through the feeding screw, and the isothilones antibacterial agent The aqueous solution is delivered to the barrel of the extruder through the feeding hole of the second section of the barrel through the high-precision liquid metering pump; the diameter of the twin-screw extruder used is 35mm, the length-to-diameter ratio L / D is 56, and the main barrel is fed from The temperature settings of each zone from the mouth to the outlet of the machine head are: 160°C, 200°C, 210°C, 215°C, 220°C, 220°C, 220°C, 220°C, 220°C,...

Embodiment 3

[0048] Take by weighing ASA terpolymer, guanidine polymer antibacterial agent by the data of embodiment 3 shown in table 1 and mix homogeneously, obtain mixed raw material A; Take by weighing PMMA resin, co-dispersant by described weight, mix homogeneously , to obtain mixed raw material B.

[0049] The mixed raw material A is fully dried, and then placed in the main feeding bin of a closely meshing co-rotating twin-screw extruder, and fed into the barrel of the extruder through the feeding screw, and the isothilones antibacterial agent The aqueous solution is delivered to the barrel of the extruder through the feeding hole of the second section of the barrel through the high-precision liquid metering pump; the diameter of the twin-screw extruder used is 35mm, the length-to-diameter ratio L / D is 56, and the main barrel is fed from The temperature settings of each zone from the mouth to the outlet of the machine head are: 160°C, 200°C, 210°C, 215°C, 220°C, 220°C, 220°C, 220°C, 2...

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Abstract

The invention relates to a high-stability and broad-spectrum antibacterial PMMAASA alloy material based on a molecular online self-assembly technology and a preparation method thereof, and the high-stability and broad-spectrum antibacterial PMMAASA alloy material specifically comprises the following raw materials by weight: 40-80 parts of polymethyl methacrylate resin, 15-30 parts of an acrylonitrile-styrene-acrylate terpolymer, 1-5 parts of a guanidine polymer antibacterial agent, 0.5-3 parts of an isothiazone antibacterial agent, and 1-3 parts of a dispersing aid. According to the preparation method, online molecular self-assembly of active substances of an isothiazone antibacterial agent with excellent antibacterial performance and a guanidine polymer antibacterial agent with excellent antifungal performance is realized through a tandem type double-order extrusion modification process method, and then secondary online melting and mixing with a PMMA resin matrix, a dispersing aid and the like are performed. The molecular self-assembly technology based on polar groups can ensure the high activity, broad spectrum and stability of the antibacterial system, and the adopted double-order online melt extrusion process can also well avoid inactivation, degradation, failure and other unstable conditions caused by water cooling or contact with the external environment of the active antibacterial system.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high-stability, broad-spectrum antibacterial PMMA\ASA alloy material based on molecular online self-assembly technology and a preparation method thereof. Background technique [0002] In recent years, with the continuous development and improvement of modern society and living standards, the concept of green, environmental protection and healthy life has been deeply rooted in the hearts of the people, and people have higher and higher requirements for the health of the working and living environment. The high-performance and high-functionalization of biomaterials put forward new requirements, and antibacterial plastics are a typical example of functionalized polymer materials. [0003] Polymethyl methacrylate (referred to as PMMA resin) is a kind of thermoplastic polymer material with a flexible long molecular chain structure, and its relative molecular ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/12C08L51/00C08L79/00C08K5/47B29B9/06
CPCC08L33/12B29B9/06C08L2205/03C08L51/003C08L79/00C08K5/47
Inventor 徐凯华徐小虎王凡张欣付飞管卫华
Owner 华合新材料科技股份有限公司
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