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Antibacterial master batch containing high-dispersity inorganic antibacterial agent, and preparation method thereof

A technology of inorganic antibacterial agent and antibacterial masterbatch, applied in the field of preparation of antibacterial masterbatch, can solve the problems of natural environment pollution, poor dispersibility of inorganic antibacterial agent, uneven content of antibacterial masterbatch, etc.

Pending Publication Date: 2021-09-03
无菌时代复合新材料(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] 1. Silver-containing antibacterial agents, although the antibacterial effect is good, but the price of silver-containing antibacterial agents is generally high, and silver is a heavy metal, which has certain potential safety risks after accumulating in organisms, and may affect the natural environment such as soil and water. create pollution
At the same time, with the extension of time, the silver antibacterial agent is easy to change color, which affects the color of the product and the transparency of downstream products such as films and plastic bottles.
[0019] 2. Poor dispersion of inorganic antibacterial agents in matrix resin
Therefore, the antibacterial agent content of the final antibacterial masterbatch is uneven, which affects the uneven antibacterial effect of downstream products
[0020] 3. Inorganic antibacterial agents are usually powders with very small particle sizes, and do not contain moisture after drying. Therefore, stirring and mixing with other raw materials in a mixer will inevitably produce a lot of dust flying problems
On the one hand, it causes waste of antibacterial agents, on the other hand, it also causes air pollution, and the production site environment is harsh

Method used

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  • Antibacterial master batch containing high-dispersity inorganic antibacterial agent, and preparation method thereof
  • Antibacterial master batch containing high-dispersity inorganic antibacterial agent, and preparation method thereof
  • Antibacterial master batch containing high-dispersity inorganic antibacterial agent, and preparation method thereof

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preparation example Construction

[0056] The following exemplifies the preparation method of the present invention.

[0057] Weigh the required number of raw materials, for example, if the mass of all raw materials is 100 parts, you can choose 60-90 parts of matrix resin, inorganic antibacterial agent: 1-30 parts, binder: 0.5-5 parts, dispersant: 0 ~5 servings. All raw materials are preferably dried and anhydrous treated in advance, for example by oven drying.

[0058]Firstly, the base resin and the binder are subjected to the first mixing treatment, so that the binder can spread on the surface of the base resin. The spreading described here refers to making the binder wet at least part of the base resin surface, preferably uniformly throughout the resin The surface spreads to form a binder layer. The first mixing process can be carried out at normal temperature using conventional mixing equipment (for example: low-speed mixer, high-speed mixer), the mixing speed is 30 to 3000 rpm, preferably 60 to 300 rpm, ...

Embodiment 1

[0079] Embodiment 1: preparation of polyamide 6 (PA6) antibacterial masterbatch

[0080] The first step: remove the moisture in the drying equipment for the required raw material matrix resin PA6, inorganic antibacterial agent nano-zinc oxide ZnO and dispersant polyethylene wax, and weigh the raw materials according to the following parts by mass: 87.5 parts of dried matrix resin PA6, 10 parts of dry inorganic antibacterial agent nano zinc oxide ZnO, 1 part of dry dispersant polyethylene wax.

[0081] Step 2: Mixing of matrix resin PA6 and binder anhydrous glycerin: Weigh the dried matrix resin PA6 and dispersant polyethylene wax, add 0.5 part of binder anhydrous glycerin, and mix evenly in a mixing device to obtain "The mixture of matrix resin and binder" is called "A particle". Mixing equipment speed: 150 rpm, mixing time 20 minutes.

[0082] The third step: adding 5 parts of inorganic antibacterial agent nano-zinc oxide ZnO into the "mixture of matrix resin and binder" an...

Embodiment 2

[0086] Embodiment 2: preparation of polypropylene (PP) antibacterial masterbatch

[0087] The first step: the required raw material matrix resin PP, inorganic antibacterial agent nano-titanium dioxide TiO 2 and dispersant oxidized polyethylene wax to remove moisture in drying equipment, and take raw materials according to the following parts by mass: 80 parts of dry matrix resin PP, 15 parts of dry inorganic antibacterial agent nano-titanium dioxide TiO 2 , 1.5 parts dry dispersant oxidized polyethylene wax.

[0088] Step 2: Mixing of matrix resin PP and binder liquid paraffin (distillation temperature>300°C): Weigh the dried matrix resin PP and dispersant oxidized polyethylene wax, add binder liquid paraffin (distillation temperature >300°C) 2.0 parts, mixed uniformly in the mixing equipment to obtain "a mixture of matrix resin and binder", which is called "A particle". Mixing equipment speed: 150 rpm, mixing time 20 minutes.

[0089] The third step: 5 parts of inorganic a...

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Abstract

The invention relates to an antibacterial master batch containing a high-dispersity inorganic antibacterial agent, and a preparation method thereof. The preparation method comprises the following steps: step A, carrying out first mixing treatment on matrix resin particles and a binder to make the binder spread on at least part of the surfaces of the mixed matrix resin particles; and step B, carrying out second mixing treatment on the matrix resin particles of which at least part of the surfaces are spread with the binder and an antibacterial material so as to adhere the antibacterial material to the surfaces of the matrix resin particles to form the antibacterial master batch.

Description

technical field [0001] The invention relates to a preparation method of an antibacterial masterbatch, in particular to an antibacterial masterbatch containing a highly dispersed inorganic antibacterial agent and a preparation method thereof. Background technique [0002] Composite various inorganic antibacterial agents with the matrix resin, so that the inorganic antibacterial agents are highly uniformly dispersed in the matrix resin, so that antibacterial masterbatches can be obtained. Antibacterial masterbatch is a kind of concentrated body. Further antibacterial masterbatch and ordinary resin slices / particles without antibacterial agent are mixed evenly according to a certain mass ratio, and some downstream products with antibacterial effect can be obtained by further processing and molding. Because this product contains certain A large amount of inorganic antibacterial agent, so that the downstream products have antibacterial function. [0003] Downstream products may i...

Claims

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Application Information

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IPC IPC(8): C08J3/22C08J3/20C08J3/00C08L77/02C08L23/06C08L23/12C08L23/30C08L91/06C08L67/02C08K3/22C08K5/053C08K9/06
CPCC08J3/226C08J3/203C08J3/005C08K2201/003C08J2477/02C08J2423/06C08J2423/12C08J2423/30C08J2491/06C08K2201/011C08K2003/2296C08K5/053C08K2003/2241C08J2467/02C08K9/06
Inventor 张兴光王威鄢军张瑾
Owner 无菌时代复合新材料(苏州)有限公司
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