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Crosslinked polyolefin foaming material with antibacterial function and preparation method thereof

A cross-linked polyolefin and foaming material technology, which is applied in the field of polyolefin foaming materials, can solve the problems of large amount of antibacterial agent, poor antibacterial effect, and decomposition of antibacterial agent, and achieve high antibacterial efficiency, good antibacterial effect, and improved The effect of foaming efficiency

Inactive Publication Date: 2018-11-16
HUBEI XIANGYUAN NEW MATERIAL TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problem that the decomposition temperature of the organic foaming agent in the prior art is between 200-230°C, and the decomposition temperature of the organic antibacterial agent is 180-200°C. In the normal foaming process, the foaming temperature needs to reach the decomposition temperature of the foaming agent. It is easy to cause the antibacterial agent to decompose and escape, resulting in a large amount of antibacterial agent added, and the defect of poor antibacterial effect

Method used

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  • Crosslinked polyolefin foaming material with antibacterial function and preparation method thereof
  • Crosslinked polyolefin foaming material with antibacterial function and preparation method thereof
  • Crosslinked polyolefin foaming material with antibacterial function and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0076] The raw material of the cross-linked polyolefin foam material 1 with antibacterial function comprises 40 parts of low-density polyethylene LDPE, 20 parts of metallocene polyethylene mLDPE, 20 parts of ethylene copolymer by weight and number ratio, 5 parts modified foaming agent, 0.5 parts of 2-(4-pyridine) benzimidazole with a particle diameter D50 of 5 μm, 1 part of coupling agent and 1 part of antioxidant; wherein, the modified foam The agent is composed of azodicarbonamide with a particle size D50 of 30 μm and zinc oxide with a particle size of 2 μm, and the zinc oxide accounts for 0.5% of the weight of the modified blowing agent.

[0077] Preparation method of cross-linked polyolefin foam material 1:

[0078] 1) Mixing azodicarbonamide and zinc oxide to prepare a modified blowing agent;

[0079] 2) Weigh low-density polyethylene LDPE, metallocene polyethylene mLDPE, ethylene copolymer, modified foaming agent, 2-(4-pyridine)benzimidazole, coupling agent and antioxid...

Embodiment 2

[0087] The raw material of the cross-linked polyolefin foam material 2 with antibacterial function comprises 25 parts of low-density polyethylene LDPE, 20 parts of metallocene polyethylene mLDPE, 25 parts of linear low-density polyethylene LLDPE, 15 parts of ethylene copolymer, 5 parts of modified blowing agent, 0.1 part of dichlorophenoxychlorophene, 0.1 part of N-octylisothiazolinone, 0.5 part of coupling agent, 0.8 part of antioxidant agent, 0.1 parts of coloring agent and 1.2 parts of lubricant; wherein, the modified foaming agent has a particle diameter of D 50 Azodicarbonamide with a particle size of 20 μm and zinc oxide with a particle size of 1 μm, zinc oxide accounts for 6% of the weight of the modified blowing agent; the particle size of dichlorophenoxychlorophen and N-octylisothiazolinone Both are 5 μm.

[0088] The method for the above-mentioned cross-linked polyolefin foam material 2 with antibacterial function comprises the following steps:

[0089] 1) Mixing a...

Embodiment 3

[0098] The raw material of cross-linked polyolefin foam material 3 with antibacterial function comprises 45 parts of low-density polyethylene LDPE, 30 parts of ethylene copolymer, 20 parts of modified blowing agent, 0.8 part of granular Diameter D 50 10 μm of 2-pyridylphenol-1-sodium oxide and 0.4 parts of coupling agent; wherein, the modified foaming agent has a particle size of D 50 40μm OBSH blowing agent and particle size D 50 It is composed of 4 μm citric acid, and the catalyst accounts for 10% of the weight of the modified blowing agent;

[0099] The method for the above-mentioned cross-linked polyolefin foam material 3 with antibacterial function comprises the following steps:

[0100] 1) The particle size D 50 40μm OBSH blowing agent and particle size D 50 A modified foaming agent is prepared by mixing 4 μm citric acid, wherein the catalyst accounts for 10% of the weight of the modified foaming agent;

[0101] 2) Weigh low-density polyethylene LDPE, ethylene copol...

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Abstract

The invention discloses a crosslinked polyolefin foaming material with an antibacterial function and a preparation method thereof. The crosslinked polyolefin foaming material is prepared from the following raw materials in parts by weight: 45 to 91.5 parts of polyethylene resin, 5 to 30 parts of an ethylene copolymer, 2 to 20 parts of a modified foaming agent, 0.05 to 0.8 part of an antibacterialagent and 0.4 to 3 parts of a processing aid. The method comprises the following steps: firstly, mixing and granulating one part of the polyethylene resin, one part of the ethylene copolymer, the modified foaming agent and the processing aid to obtain spherulites A; secondly, mixing and granulating the rest part of the polyethylene resin, the rest part of the ethylene copolymer and the antibacterial agent to obtain spherulites B; mixing the spherulites A and the spherulites B, and extruding the mixture to obtain a sheet; and treating the sheet through high-energy electron irradiation crosslinking and a foaming process to obtain the crosslinked polyolefin foaming material. The foaming material disclosed by the invention is extremely good in antibacterial effect and high in antibacterial efficiency.

Description

technical field [0001] The invention relates to the field of polyolefin foam materials, in particular to a cross-linked polyolefin foam material with antibacterial function and a preparation method thereof. Background technique [0002] More and more polyolefin foam materials have penetrated into various fields of national economic construction, and their role in economic construction is becoming more and more important. Foam material concerns are especially important when the field of application is related to humans and animals. Foam materials are especially prone to bacteria and mold growth when used in sweat, or in damp and dark environments. Although the polyolefin material itself cannot provide nutrients for the growth and reproduction of bacteria and molds, some other small molecular components in the formula, as well as the use environment and other factors create an atmosphere suitable for the growth of bacteria and molds, bringing health benefits to users. threat...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08J9/10
CPCC08J9/0095C08J9/103C08J9/105C08J9/107C08J2203/04C08J2323/06C08J2423/06C08J2423/08
Inventor 段建平魏琼
Owner HUBEI XIANGYUAN NEW MATERIAL TECH INC
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