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Antibacterial antistatic foamed elastomer material and preparation method thereof

An elastomer material, anti-static technology, applied in the field of foamed elastic materials, can solve the problems of bacteria breeding, poor long-term performance, poor dispersion of antibacterial agents, etc., and achieve excellent antibacterial effect

Active Publication Date: 2020-05-12
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the foamed elastomer made of ethylene-vinyl acetate copolymer (EVA), due to the presence of various microorganisms in its use environment, can easily cause bacteria to grow on the surface or inside of the EVA foam, seriously affecting the appearance and performance of the material; and EVA foam The material itself is not conductive, and the surface is easy to accumulate static electricity, which seriously affects the use
Usually the liquid antistatic agent added to EVA foam or the antibacterial agent sprayed on the surface has poor dispersion and poor long-term effect; ordinary solid conductive agent usually uses superconducting carbon black, which cannot be used for light-colored EVA products, and quaternary phosphonium salt modified Antimony tin oxide can be used to prepare antibacterial, antistatic, light-colored polymer materials

Method used

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  • Antibacterial antistatic foamed elastomer material and preparation method thereof
  • Antibacterial antistatic foamed elastomer material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0020] The embodiment of the present invention provides a preparation method of an antibacterial quaternary phosphonium salt modified tin antimony oxide conductive filler and a hybrid EVA foamed elastomer thereof. It includes the following steps:

[0021] (1) Weigh 15g of nano-antimony tin oxide, heat at 60°C for 4 hours, dry, and grind to obtain antimony tin oxide powder (average particle size 0.05 μm);

[0022] (2) Mix 100g of dodecyloxymethyltributylphosphorous chloride and 0.15g of polyvinyl alcohol into an aqueous solution with a concentration of quaternary phosphonium salt of 4mg / mL, and place tin antimony oxide in it to absorb to saturation (quaternary phosphonium Salt is kept in excess), filtered, heated at 60°C for 4 hours, dried, and ground to obtain quaternary phosphonium salt modified tin antimony oxide conductive filler;

[0023] (3) Then add a solution of 1.5 g of vinyl triperoxy-tert-butylsilane and 30 g of ethanol (the mass ratio of silane to quaternary phosph...

Embodiment 2

[0027] The embodiment of the present invention provides a preparation method of an antibacterial quaternary phosphonium salt modified tin antimony oxide conductive filler and a hybrid EVA foamed elastomer thereof. It includes the following steps:

[0028] (1) Weigh 15g of nano-antimony tin oxide, heat and dry at 60°C for 4 hours, and obtain tin antimony oxide powder after grinding;

[0029] (2) Weigh 100g of tetradecyltributylphosphorus chloride and 0.25g of polyvinyl alcohol to prepare an aqueous solution with a concentration of quaternary phosphonium salt of 4mg / mL, and place tin antimony oxide in it to absorb to saturation (quaternary phosphonium salt keeps Excessive amount), after filtering, fully wash with deionized water, heat at 60°C for 4 hours, dry, and grind to obtain quaternary phosphonium salt modified tin antimony oxide conductive filler;

[0030] (3) Then add a solution mixed with 1.5g of titanate coupling agent and 30g of ethanol (the mass ratio of titanate to ...

Embodiment 3

[0034] The embodiment of the present invention provides a preparation method of an antibacterial quaternary phosphonium salt modified tin antimony oxide conductive filler and a hybrid EVA foamed elastomer thereof. It includes the following steps:

[0035] (1) Weigh 15g of nano-antimony tin oxide, heat and dry at 60°C for 4 hours, and obtain tin antimony oxide powder after grinding;

[0036] (2) According to the mass ratio of polyquaternary phosphonium salt / polyvinyl alcohol = 100 / 0.45, prepare an aqueous solution of polyquaternary phosphonium salt with a concentration of 6 mg / mL, and place tin antimony oxide in it to absorb to saturation (keep the excess of quaternary phosphonium salt) , after filtering, fully wash with deionized water, heat and dry at 60°C for 4 hours, and grind to obtain polyquaternary phosphonium salt modified tin antimony oxide conductive filler;

[0037] (3) Then add the solution mixed with aluminate coupling agent / ethanol=5 / 100 mass ratio (the mass rati...

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Abstract

The invention provides an antibacterial antistatic foamed elastomer material and a preparation method thereof, and belongs to the technical field of foamed elastic materials. The preparation method comprises the following steps: placing tin antimony oxide particles in a quaternary phosphonium salt solution until adsorbing saturation, washing the particles, and drying and grinding and the particlesto obtain quaternary phosphonium salt modified tin antimony oxide; modifying the quaternary phosphonium salt modified tin antimony oxide with a coupling agent, and uniformly mixing with a modified polymer blend, a foaming agent, a cross-linking agent and a modified compounding agent to obtain a rubber compound; and carrying out foaming cross-linking shaping on the rubber compound to obtain the antibacterial antistatic foamed elastomer material. The foamed elastomer prepared by the preparation method not only has an antistatic property, but also has an excellent antibacterial effect, and can effectively destroy bacteria in an EVA use environment; and after being modified with the coupling agent, the quaternary phosphonium salt doped tin antimony oxide can be uniformly dispersed in the EVAmatrix, has permanent antibacterial and antistatic effects, and can be used as a packaging material, a shoe material and other products.

Description

technical field [0001] The invention relates to the technical field of foamed elastic materials, in particular to an antibacterial and antistatic foamed elastic material and a preparation method thereof. Background technique [0002] In packaging or wearing materials in food, medicine, clothing and other industries, antibacterial and antistatic are two very critical but difficult properties to have at the same time. For example, the foamed elastomer made of ethylene-vinyl acetate copolymer (EVA), due to the presence of various microorganisms in its use environment, can easily cause bacteria to grow on the surface or inside of the EVA foam, seriously affecting the appearance and performance of the material; and EVA foam The material itself is not conductive, and the surface is easy to accumulate static electricity, which seriously affects the use. The liquid antistatic agent added to the EVA foam or the antibacterial agent sprayed on the surface is poorly dispersed and has p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L7/00C08L9/06C08L23/06C08K13/06C08K9/04C08K9/06C08K3/22C08K7/26C08K5/14C08K5/09C08K3/26C08J9/10
CPCC08J9/103C08J9/105C08J9/009C08J9/0066C08J9/0061C08J9/0023C08J2323/08C08J2423/08C08J2407/00C08J2409/06C08J2423/06C08K13/06C08K9/04C08K9/08C08K9/06C08K2003/2231C08K3/2279C08K7/26C08K5/14C08K2003/2296C08K5/09C08K2003/265C08J2203/04C08K2201/017
Inventor 翟俊学翟晋葶李想王琳肖建斌赵树高
Owner QINGDAO UNIV OF SCI & TECH
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