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Preparation method of antibacterial and wear-resistant plastic used by children toys

A technology of children's toys and plastics, which is applied in the field of plastic product processing, can solve the problems of antibacterial safety performance not meeting the requirements, and achieve good antibacterial effect, improved friction performance, and good mechanical properties.

Inactive Publication Date: 2019-07-23
马鞍山卓凡新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is a common problem in children's plastic toy products that the antibacterial safety performance cannot meet the requirements

Method used

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  • Preparation method of antibacterial and wear-resistant plastic used by children toys

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Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of antibacterial and wear-resistant plastics for children's toys is characterized in that it comprises the following steps, and the following raw materials are calculated in parts by weight:

[0026] (1) Preparation of compound antibacterial agent:

[0027] Add 1 part of nano-titanium dioxide 1:10 into ethanol aqueous solution, high-speed shear fraction for 10 minutes, adjust pH to 8, disperse by ultrasonic oscillation for 20 minutes, add 0.15 parts of silane coupling agent dropwise, stir and reflux reaction in 70°C oil bath for 2 hours, centrifuge 1. Wash 3 times with absolute ethanol, and vacuum-dry to obtain coupling agent-modified nano-titanium dioxide, add it and 0.17 parts of chlorophyll cupric acid 1:10 to absolute ethanol, then add 2 parts of surface-modified nano-zinc oxide, magnetically stir Centrifuge after uniformity, and vacuum-dry at 80°C to obtain a composite antibacterial agent;

[0028] Wherein, the volume fraction of ethanol aqueo...

Embodiment 2

[0036] A preparation method of antibacterial and wear-resistant plastics for children's toys is characterized in that it comprises the following steps, and the following raw materials are calculated in parts by weight:

[0037] (1) Preparation of compound antibacterial agent:

[0038] Add 2 parts of nano-titanium dioxide 1:10 into ethanol aqueous solution, high-speed shear fraction for 20 minutes, adjust pH to 8, disperse by ultrasonic vibration for 30 minutes, add 0.3 parts of silane coupling agent dropwise, stir and reflux reaction in 75°C oil bath for 2 hours, centrifuge 1. Wash 5 times with absolute ethanol, and vacuum-dry to obtain coupling agent-modified nano-titanium dioxide, add it and 0.33 parts of chlorophyll cupric acid 1:10 in absolute ethanol, then add 4 parts of surface-modified nano-zinc oxide, magnetically stir Centrifuge after uniformity, and vacuum-dry at 85°C to obtain a composite antibacterial agent;

[0039] Wherein, the volume fraction of ethanol aqueous...

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Abstract

The invention discloses a preparation method of antibacterial and wear-resistant plastic used by children toys. The preparation method comprises the following steps: adding nano titanium dioxide intoan ethanol aqueous solution, carrying out high-speed shearing, adjusting the pH value, carrying out ultrasonic concussion for dispersing, dropwise adding a silane coupling agent, stirring for reflux reaction, performing centrifugation and ethanol washing, and drying to obtain a coupling agent modified nano titanium dioxide; adding coupling agent modified nano titanium dioxide and copper chlorophyll acid in anhydrous ethanol, adding surface modified nano zinc oxide, uniformly magnetically stirring, centrifuging, and drying to obtain a composite antimicrobial agent; dispersing carboxylated multi-walled carbon nanotubes in triethylenetetramine and dicyclohexylcarbodiimide, magnetically stirring for refluxing, cooling, carrying out pressure reduced suction filtration, washing with ethanol to obtain a neutral product, and drying to obtain amine-functionalized multi-walled carbon nanotubes; fully mechanically mixing polylactic acid, polycaprolactone, a bulking agent (acetyl tributyl citrate), grafting modified nano-hydroxyapatite, a compound antibacterial agent and the amine-functionalized multi-walled carbon nanotubes, melting and extruding through a twin-screw extruder, pelletizing, drying with lower blasting, and performing injection molding.

Description

technical field [0001] The invention belongs to the field of plastic product processing, and in particular relates to a preparation method of antibacterial and wear-resistant plastics for children's toys. Background technique [0002] In the process of children's growth, every parent has to choose some toys for their children more or less. In addition to being fun and educational, parents may be most concerned about the quality and safety of toys. Some toys made of low-quality plastic or leftover materials seriously endanger children's health. The failure of antibacterial safety performance to meet the requirements is a common problem in children's plastic toy products. Therefore, how to make strong antibacterial children's plastic toy products with excellent comprehensive performance under the condition of low antibacterial agent content is of great significance. Contents of the invention [0003] The purpose of the present invention is to address the existing problems ...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08K13/06C08K5/11C08K9/04C08K3/04C08K9/06C08K3/22C08K3/32C08K5/00
CPCC08K2003/2241C08K2003/2296C08K2003/325C08K2201/011C08L67/04C08L2205/025C08K13/06C08K5/11C08K9/04C08K3/041C08K9/06C08K3/22C08K3/32C08K5/0091
Inventor 郭坤
Owner 马鞍山卓凡新材料科技有限公司
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