Nano-antibacterial sponge with strong water absorption and preparation method thereof

A water-absorbing sponge and nanotechnology, applied in the field of polymer materials, can solve the problems of affecting water absorption and short antibacterial time, and achieve the effect of improving water absorption, fast sterilization rate and long-term antibacterial effect

Inactive Publication Date: 2021-08-24
石家庄恒华聚氨酯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a production process of a nano-antibacterial strong water-absorbing sponge with long antibacterial effect and does not affect water absorption, so as to solve the problem that traditional antibacterial sponges are generally coated with antibacterial agents on the surface of the sponge, and the short antibacterial effect also affects water absorption.

Method used

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  • Nano-antibacterial sponge with strong water absorption and preparation method thereof
  • Nano-antibacterial sponge with strong water absorption and preparation method thereof
  • Nano-antibacterial sponge with strong water absorption and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Accurately weigh 0.2 parts of silicone oil, 0.6 parts of solid amine, 6 parts of water and 3 parts of dimethyl ether, mix and stir evenly;

[0033] (2) 55 parts of polypropylene oxide trihydric alcohol were dehydrated in vacuum at 110°C for 0.5 hours, cooled to 40°C, added to the substance of step (1), and then 0.3 parts of stannous octoate were added, 70°C, 250r / min Stir evenly, cool to 30°C for use;

[0034] (3) Add 30 parts of toluene diisocyanate, 1 part of American Dow Corning DOWSIL7344 additive antibacterial agent and 10 parts of chitosan to the substance of step (2), after stirring at 1400r / min, add 8 parts of sodium alginate, and stir evenly at the same speed and curing at room temperature to obtain the nano antibacterial strong water-absorbing sponge.

Embodiment 2

[0036] (1) Accurately weigh 0.5 parts of silicone oil, 0.5 parts of solid amine, 8 parts of water and 4 parts of dimethyl ether, mix and stir evenly;

[0037] (2) Vacuum dehydrate 60 parts of polyethylene oxide trihydric alcohol at 115°C for 0.8 hours, cool down to 40°C, add to the substance of step (1), then add 0.8 parts of stannous octoate, 75°C, 250r / min Stir evenly, cool to 35°C for use;

[0038] (3) Add 25 parts of toluene diisocyanate, 1 part of American Dow Corning DOWSIL7344 additive antibacterial agent and 12 parts of chitosan to the substance of step (2), after stirring at 1400r / min, add 10 parts of sodium alginate, and stir evenly at the same speed and curing at room temperature to obtain the nano antibacterial strong water-absorbing sponge.

Embodiment 3

[0040] (1) Accurately weigh 1.5 parts of silicone oil, 3 parts of solid amine, 9 parts of water and 5 parts of dimethyl ether, mix and stir evenly;

[0041] (2) Vacuum dehydrate 70 parts of polypropylene oxide triol at 120°C for 0.5 hours, cool down to 50°C, add to the substance of step (1), then add 1.5 parts of stannous octoate, 80°C, 300r / min Stir well, cool to 40°C for use;

[0042] (3) Add 35 parts of toluene diisocyanate, 1 part of American Dow Corning DOWSIL7344 additive antibacterial agent and 15 parts of chitosan to the substance of step (2), after stirring at 1500r / min, add 12 parts of sodium alginate, and stir evenly at the same speed and curing at room temperature to obtain the nano antibacterial strong water-absorbing sponge.

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Abstract

The invention discloses a nano-antibacterial sponge with strong water absorption and a preparation method thereof, and belongs to the technical field of high polymer materials. The nano-antibacterial sponge comprises the following components in parts by mass: 50-70 parts of polyether polyol, 25-40 parts of isocyanate, 5-9 parts of water, 0.2-2 parts of silicone oil, 0.3-2 parts of stannous octoate, 0.5-4 parts of solid amine, 1-3 parts of a nano antibacterial agent, 3-5 parts of dimethyl ether, 10-15 parts of chitosan and 8-12 parts of sodium alginate. In the preparation process of the nano-antibacterial sponge with strong water absorption, generation of sponge from polyether polyol and isocyanate and the cross-linking process of chitosan and sodium alginate are synchronously carried out, a spatial three-dimensional net-shaped structure is formed, and the antibacterial timeliness is enhanced by adding the nano-antibacterial agent.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a nano antibacterial strong water-absorbing sponge and a preparation method thereof. Background technique [0002] Polyurethane is a synthetic polymer whose molecular chain is composed of repeating carbamate groups. The molecular chains are composed of soft segments composed of oligomer diols and hard segments such as diisocyanate and small molecular chain extenders. During the reaction process of polyurethane, urea, biuret and other groups will also be reacted. In addition to the above-mentioned materials, the molecular chain segment of waterborne polyurethane is also added with ionic groups or hydrophilic groups composed of hydrophilic oligomer polyols. The hydrophilic group provides water solubility for the polyurethane chain segment. With the Coulomb force, the water-based polyurethane can be dispersed and emulsified in water to form a solution, emulsion or disper...

Claims

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Application Information

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IPC IPC(8): C08G18/64C08G18/48C08G101/00
CPCC08G18/4081C08G18/4829C08G18/6484C08G2101/00C08G2110/0083
Inventor 庄建家
Owner 石家庄恒华聚氨酯科技有限公司
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