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Antibacterial TPE (Thermoplastic Elastomer) and preparation method thereof

A technology of antibacterial agent and flame retardant, which is applied in the field of antibacterial TPE and its preparation, can solve the problems of oxidative decomposition of antibacterial agent, decline of antibacterial effect, poor anti-oxidation effect, etc., and achieve the effect of slowing down the oxidation of antibacterial agent and preventing coloring

Inactive Publication Date: 2018-05-04
余姚优信塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of antibacterial agent cannot directly prevent the oxidation of quaternary ammonium salts or sorbic acid or chitosan, and the anti-oxidation effect is not good. As a result, the antibacterial plastics that use organic antibacterial agents or natural antibacterial agents increase with the use time, and the antibacterial agents gradually increase. Oxidative decomposition or even failure, the antibacterial effect is significantly reduced

Method used

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  • Antibacterial TPE (Thermoplastic Elastomer) and preparation method thereof
  • Antibacterial TPE (Thermoplastic Elastomer) and preparation method thereof
  • Antibacterial TPE (Thermoplastic Elastomer) and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A1: Heat 50 parts of SBES and 40 parts of PP in a high mixer while premixing;

[0044] A2: After premixing for 2 hours, keep the heating temperature and add 80 parts of white oil and stir at 165r / min for 5 minutes;

[0045] A3: Stop stirring and observe the oil filling of the material in the high mixer.

[0046] According to the heating temperature of 90°C, 95°C, 100°C and 105°C, the experiment results are as follows:

[0047]

[0048] It can be seen from the above table that there is a temperature range within the temperature range of 95-105°C so that the white oil is fully absorbed and the heating energy consumption is low, and the increase in the heating temperature in it is conducive to the absorption of the white oil.

Embodiment 2

[0050] temperature / ℃

Embodiment 3

[0052] B1: Heat 60 parts of SBES and 40 parts of PP in a high mixer while premixing;

[0053] B2: After premixing for 2 hours, add 60 parts of white oil while maintaining the heating temperature and stir at 165r / min for 5 minutes;

[0054] B3: Stop stirring and observe the oil filling of the material in the high mixer.

[0055] According to the heating temperature of 96°C, 97°C, 98°C, 99°C, 100°C, 101°C, 102°C, 103°C, the experiment results are as follows:

[0056]

[0057]

[0058] From the results of Examples 2 and 3, it can be seen that the ratio of SEBS and white oil in Example 2 reaches the minimum within the component requirements, and the white oil is completely absorbed when the heating temperature is 103°C; The white oil ratio reaches the maximum, and its absorption is complete when the heating temperature is 98°C, so when the heating temperature is preferably 98°C-103°C, the white oil is fully absorbed and the heating energy consumption is low.

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Abstract

The invention relates to antibacterial plastics and discloses an antibacterial TPE (Thermoplastic Elastomer) and a preparation method thereof. The antibacterial TPE comprises the following componentsin parts by weight: 50-60 parts of SBES, 20-60 parts of PP, 60-80 parts of white oil, 5-15 parts of an antibacterial agent, 0.1-20 parts of a flame retardant DOPO and 2-4 parts of a UV-resistant agent, wherein the antibacterial agent is composed of one or more than one of quaternary ammonium salt, chitosan and sorbic acid. The antibacterial TPE has an effect of retarding reduction of the antibacterial effect of the antibacterial TPE along with oxidation time.

Description

technical field [0001] The invention relates to antibacterial plastics, in particular to an antibacterial TPE and a preparation method thereof. Background technique [0002] Antibacterial plastics have the effect of inhibiting the growth of bacteria or fungi on the surface, so they are widely used in medical equipment and toy materials. The existing antibacterial plastics are all mixed with antibacterial agents, and the antibacterial agents are mainly organic antibacterial agents and natural antibacterial agents. Organic antibacterial agents include quaternary ammonium salts, phenol ethers and phenol, etc., while natural antibacterial agents are chitosan and Sorbic acid etc. [0003] However, organic antibacterial agents and natural antibacterial agents will be oxidized by oxygen in the air and decompose or even become invalid. Most of the existing antioxidants used for rubber and resins are aimed at free radical chain reactions, by reacting with free radicals R or RO2 to ...

Claims

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Application Information

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IPC IPC(8): C08L91/06C08L53/02C08L23/12C08K5/5313
CPCC08L53/025C08L91/06C08L2205/03C08L23/12C08K5/5313
Inventor 王伟俊
Owner 余姚优信塑业有限公司
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