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Silver-loaded antibacterial master batch and application thereof

A silver-loaded antibacterial and masterbatch technology, applied in the field of antibacterial materials, can solve problems such as migration, precipitation, and poor antibacterial durability of thin films, and achieve the effects of high silver loading, good antibacterial properties, and good compatibility

Pending Publication Date: 2022-04-15
安徽海铭塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The antibacterial agent in this invention is the montmorillonite of modified loading zinc, although the montmorillonite of loading zinc is modified by silane surface, it can be uniformly dispersed in matrix resin, improve the processability of antibacterial functional polymer master batch, However, since the montmorillonite loaded with zinc is still an inorganic antibacterial agent, it is still easy to migrate and precipitate in the film matrix resin, resulting in poor antibacterial durability of the obtained film.

Method used

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  • Silver-loaded antibacterial master batch and application thereof
  • Silver-loaded antibacterial master batch and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Preparation of silver-loaded hyperbranched polyester:

[0031] Step A: Stir 0.1mol trishydroxymethylaminomethane and 80mL methyl sulfoxide evenly, then add 0.1mol triethylamine, stir for 1h, then add 0.085mol 2-chloro-5-nitrate under nitrogen atmosphere The dimethyl sulfoxide solution of pyridine was heated to 80°C, and reacted for 4 hours. After the reaction was completed, the reaction was rotary evaporated under reduced pressure, washed with deionized water for several times, and dried to obtain the trihydric alcohol compound;

[0032] Step B. Mix 27g of iron powder, 100mL of ethanol, 20mL of deionized water and 3mL of 36wt% hydrochloric acid, heat to 85°C, activate for 20min, cool down to 40°C, add 50g of trihydric alcohol compound, heat up to 85°C, and stir for reaction 6h, stop the reaction, filter, adjust the pH value of the filtrate to 8 with ammonia water, let stand for 12h, filter with suction, precipitate the filtrate with deionized water, filter, and dry to o...

Embodiment 2

[0037] Preparation of silver-loaded hyperbranched polyester:

[0038] Step A: Stir 0.1mol of trishydroxymethylaminomethane and 80mL of methyl sulfoxide evenly, then add 0.1mol of triethylamine, stir for 2 hours, and then add 0.09mol of 2-chloro-5-nitrate under a nitrogen atmosphere The dimethyl sulfoxide solution of pyridine was heated to 90°C, and reacted for 4 hours, and the reaction was terminated, and the reaction was rotary evaporated under reduced pressure, washed with deionized water several times, and dried to obtain the trihydric alcohol compound;

[0039] Step B. Mix 30g of iron powder, 100mL of ethanol, 20mL of deionized water and 5mL of 36wt% hydrochloric acid, heat to 85°C, activate for 20min, cool down to 45°C, add 60g of trihydric alcohol compound, heat up to 80°C, and stir for reaction 6h, stop the reaction, filter, adjust the pH value of the filtrate to 8 with ammonia water, let stand for 12h, filter with suction, precipitate the filtrate with deionized water,...

Embodiment 3

[0044] An antibacterial masterbatch:

[0045] Step 1, preparation comprises following raw material by weight: 15 parts of silver-loaded hyperbranched polyesters prepared in embodiment 1, 0.1 part of compatibilizer and 30 parts of carrier resins; Described compatibilizer is maleic anhydride grafted polyethylene; The carrier resin is polypropylene resin;

[0046] Step 2, mixing and granulating the silver-loaded hyperbranched polyester, a compatibilizer and a carrier resin to obtain an antibacterial masterbatch.

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Abstract

The invention relates to a silver-loaded antibacterial master batch and application thereof, and belongs to the technical field of antibacterial materials. The silver-loaded antibacterial master batch is prepared from the following raw materials in parts by weight: 15 to 25 parts of silver-loaded hyperbranched polyester, 0.1 to 1 part of compatibilizer and 30 to 40 parts of carrier resin. The silver-loaded hyperbranched polyester contains a large number of cavities, each cavity contains a pyridine ring, nitrogen atoms on the pyridine ring and silver ions form coordinate bonds, then silver loading is completed, and the high silver loading amount can be achieved; a siloxane chain contained in a molecular chain of the hyperbranched polyester has excellent wettability, so that the hyperbranched polyester and the carrier polyester have good compatibility, and a branched structure of the hyperbranched polyester promotes the hyperbranched polyester to be dispersed more uniformly in the carrier resin; the hyperbranched polyester contains a large number of terminal hydroxyl groups, so that the bonding property between the hyperbranched polyester and carrier resin is relatively strong. Therefore, the antibacterial master batch has good antibacterial property and durability of the antibacterial property.

Description

technical field [0001] The invention belongs to the technical field of antibacterial materials, and in particular relates to a silver-loaded antibacterial masterbatch and its application. Background technique [0002] Many material cycles in nature depend on the metabolism of microorganisms. Most microorganisms are harmless to humans, but some microorganisms can cause human diseases, such as pathogenic bacteria, fungi and viruses, which threaten human health. It can even be life-threatening. In recent years, with the improvement of people's living standards and the enhancement of health awareness, antibacterial materials, as a specific functional material, have been more and more used in people's lives, such as antibacterial fabrics, antibacterial plastics, antibacterial fibers, antibacterial ceramics and Antibacterial building materials, etc. The above-mentioned antibacterial materials often realize the antibacterial performance of the product through the addition of anti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L67/02C08L67/00C08L75/04C08K3/08C08J3/22D01F1/10D01F6/92
CPCY02A50/30
Inventor 张海侠张涛征义
Owner 安徽海铭塑业有限公司
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