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Plastic composition applied in children's toys and preparation method thereof

A technology for plastic composition and children's toys, applied in the field of polymer materials, can solve the problems of increased production cost, insufficient antibacterial effect, and inappropriate use of white toys in large quantities.

Inactive Publication Date: 2018-04-27
FUJIAN MEINKIND BABY PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silver ions have the strongest antibacterial performance, but their chemical properties are lively, and they are easily converted into brown silver oxide or black elemental silver, so they should not be used in large quantities in white toys
The antibacterial strength of zinc is only 1 / 1000 of that of silver; copper ions are colored, and a large amount of use will affect the appearance of the product
Although metal ions are quick to kill bacteria, the cost of using a large amount is high, and the release of heavy metal ions will have adverse effects on the environment and human health
The latter has high photocatalytic activity, strong antibacterial persistence, low price and non-toxicity, and strong self-cleaning function. Light exposure applications are limited
A variety of compound antibacterial agents have appeared on the market, but the antibacterial effect is still not good enough; moreover, the preparation methods of existing toy plastics are complicated, which increases the production cost

Method used

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  • Plastic composition applied in children's toys and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A plastic composition applied to children's toys, the raw material formula is:

[0038] 74 parts by weight of polyethylene or polypropylene;

[0039] 8 parts by weight of active calcium carbonate;

[0040] 9 parts by weight of antibacterial agent;

[0041] 3 parts by weight of phenyl salicylate;

[0042] 1.4 parts by weight of antioxidant;

[0043] 1.3 parts by weight of sodium benzoate;

[0044] 2 parts by weight of nanofibers;

[0045] The rest are plasticizers.

[0046] Preferably, the antibacterial agent is silicon dioxide and antibacterial masterbatch as a network support, with 22-26% elemental silver and 13-17% copper oxide as an active body, and the silicon dioxide contains 40 -50%, the rest is antibacterial masterbatch.

[0047] A preparation method for a plastic composition applied to children's toys, comprising the following steps:

[0048] 1) Add polyethylene or polypropylene to a plastic shredder for crushing and set aside;

[0049] 2) Add active ca...

Embodiment 2

[0055] A kind of preparation method that is applied to the plastic composition of children's toy as described in embodiment 1, wherein some steps can also adopt following technology:

[0056] In step 5), the stirring speed of the first stage of stirring is 140r / min, the stirring time is 23min, and the stirring temperature is 136°C; the stirring speed of the second stage of stirring is 350r / min, the stirring time is 21min, and the stirring temperature The stirring speed of the third stage of stirring is 380r / min, the stirring time is 26min, and the stirring temperature is 72°C.

[0057] In step 6), the extrusion temperature of the independent section is 255°C, the extrusion temperature of the filling section is 345°C, and the extrusion temperature of the meshing section is 304°C.

Embodiment 3

[0059] A kind of preparation method that is applied to the plastic composition of children's toy as described in embodiment 1, wherein some steps can also adopt following technology:

[0060] In step 5), the stirring speed of the first stage of stirring is 120r / min, the stirring time is 25min, and the stirring temperature is 150°C; the stirring speed of the second stage of stirring is 370r / min, the stirring time is 20min, and the stirring temperature The stirring speed of the third stage of stirring is 300r / min, the stirring time is 40min, and the stirring temperature is 80°C.

[0061] In step 6), the extrusion temperature of the independent section is 270°C, the extrusion temperature of the filling section is 290°C, and the extrusion temperature of the meshing section is 320°C.

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Abstract

The invention provides a plastic composition applied in children's toys and a preparation method thereof; in a formula, polyethylene or polypropylene is used as a main body, an antibacterial agent, sodium benzoate, nanofibers and the like are added, and during preparation, firstly, the antibacterial agent is combined with the antioxidant and sodium benzoate to obtain a second mixture, then the plastic main body, a plasticizer and the nanofibers are added on the basis of the second mixture, and at the same time, processing parameters such as speed, time, temperature and the like are strictly controlled so as to ensure the synergistic effect among the raw materials and greatly improve the performance of the product. In addition, active calcium carbonate and phenyl salicylate are also contained in the ingredients, therefore, the whiteness of the product can be improved, and the phenomenon of color darkening of the product surface after conversion of the antibacterial agent can be reduced;tests prove that the prepared plastic composition has all the metal element content, heavy metal content and the like in accordance with the national standards, and also has excellent antibacterial properties.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a plastic composition used in children's toys and a preparation method thereof. Background technique [0002] The core component of antibacterial plastics is antibacterial agent. Organic antibacterial agents are limited in their application due to their lack of safety, heat resistance, antibacterial persistence, and broad-spectrum antibacterial properties; natural antibacterial agents have low toxicity and are safe to use, but they have poor heat resistance and a wide range of applications. Narrow, poor antibacterial persistence and other shortcomings; inorganic antibacterial agents avoid the above shortcomings and make their application in the field of plastics more important. Inorganic antibacterial agents are mainly divided into two categories: metal ion series and titanium series. The antibacterial active ingredients used in the former mainly include metal ions such as silv...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08K13/04C08K7/02C08K3/26C08K5/134C08K5/098C08K3/36C08K3/08C08K3/22B29B13/10B29B7/00B29C45/78B29C45/76C08J3/22
CPCB29B7/002B29B13/10B29C45/76B29C45/78B29C2945/76498B29C2945/76531C08J3/223C08J2323/06C08J2323/12C08K3/08C08K3/22C08K3/26C08K3/36C08K5/098C08K5/1345C08K7/02C08K13/04C08K2003/0806C08K2003/2248C08K2003/265C08K2201/011C08L23/06C08L23/12
Inventor 陈治宇
Owner FUJIAN MEINKIND BABY PROD
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