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Environment-friendly antibacterial sponge and preparation process thereof

A preparation process and technology for sponges, applied in the field of sponges, can solve the problems of poor mechanical properties of low-density sponges that cannot meet the standards of seat cushion sponges, high production costs of high-density sponges, and difficulty in degrading artificial polymers, and achieve high bonding stability. , the effect of improved softness and low compression set value

Inactive Publication Date: 2018-02-02
德清舒华泡沫座椅有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the high production cost of the above-mentioned high-density sponge, the poor mechanical properties of the low-density sponge cannot meet the standard of seat cushion sponge, and the pollution generated in the preparation process of the sponge is relatively large, the artificial high polymer is difficult to degrade, and the foaming agent is In order to solve the problems of harm to people, pollution to the environment and no antibacterial properties during the soaking process, it provides a composition that is naturally degradable and digestible in nature without causing environmental pollution. The preparation method is safe and harmless and has good resilience and permanent compression. Environmentally friendly antibacterial sponge with low deformation value and excellent antibacterial performance and its preparation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Preparation of small molecule chitosan:

[0035] a) Chitosan is dissolved in dilute acetic acid solution, the acetic acid concentration of the dilute acetic acid solution is 5%, and the amount of dilute acetic acid solution is used to control the chitosan concentration to be 1%, so as to obtain chitosan acetic acid solution;

[0036] b) Ultrasonic radiation is applied to the chitosan acetic acid solution obtained in step a) for 6 hours, and a small molecule chitosan acetic acid solution is obtained after the radiation is completed;

[0037] c) Neutralize the small molecule chitosan acetic acid solution obtained in step b) with ammonia water to neutrality, then slowly add ammonia water dropwise until the small molecule chitosan is no longer precipitated, and suction filter and dry the small molecule chitosan;

[0038] A kind of preparation technology of environment-friendly and degradable antibacterial sponge, described preparation technology comprises following preparat...

Embodiment 2

[0046] Preparation of small molecule chitosan:

[0047] a) dissolving chitosan in dilute acetic acid solution, the concentration of acetic acid in the dilute acetic acid solution is 10%, and the amount of dilute acetic acid solution is used to control the concentration of chitosan to be 1-2%, so as to obtain chitosan acetic acid solution;

[0048] b) Ultrasonic radiation is applied to the chitosan acetic acid solution obtained in step a) for 6 hours, and a small molecule chitosan acetic acid solution is obtained after the radiation is completed;

[0049] c) Neutralize the small molecule chitosan acetic acid solution obtained in step b) with ammonia water to neutrality, then slowly add ammonia water dropwise until the small molecule chitosan is no longer precipitated, and suction filter and dry the small molecule chitosan;

[0050] A kind of preparation technology of environment-friendly and degradable antibacterial sponge, described preparation technology comprises following p...

Embodiment 3

[0058] Preparation of small molecule chitosan:

[0059] a) Chitosan is dissolved in dilute acetic acid solution, the acetic acid concentration of dilute acetic acid solution is 10%, and the amount of dilute acetic acid solution is used to control the chitosan concentration to be 2%, so as to obtain chitosan acetic acid solution;

[0060] b) Applying ultrasonic radiation to the chitosan acetic acid solution obtained in step a) for 8 hours, and obtaining a small molecule chitosan acetic acid solution after the radiation is finished;

[0061] c) Neutralize the small molecule chitosan acetic acid solution obtained in step b) with ammonia water to neutrality, then slowly add ammonia water dropwise until the small molecule chitosan is no longer precipitated, and suction filter and dry the small molecule chitosan;

[0062] A kind of preparation technology of environment-friendly and degradable antibacterial sponge, described preparation technology comprises following preparation step...

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Abstract

The invention relates to an environment-friendly antibacterial sponge and a preparation process thereof, wherein the sponge is natural, degradable, safe and harmless in preparation method, good in rebound elasticity and low in permanent compression deformation value, can be digested by nature, cannot pollute environments and has excellent antibacterial properties. The sponge has the advantages that used raw materials are free from pollution and more environmentally friendly, high molecular weight chitosan is crushed into small molecular chitosan by an ultrasonic crushing method, the sponge formed by the small molecular chitosan is higher in combined stability and can avoid the problems of hardening, crisping, poor toughness and the like as compared with the sponge formed by the high molecular weight chitosan, elasticity and deformation restorability of the sponge are improved, softness of the sponge is greatly improved, the prepared sponge is high in softness and rebound elasticity, low in permanent compression set value and has good mechanical properties and antimicrobial properties, the prepared sponge has the functions of inhibiting and killing bacterium, and articles prepared by the sponges are more sanitary.

Description

technical field [0001] The invention relates to the field of sponges, in particular to an environment-friendly antibacterial sponge with natural degradable ingredients, digestible in nature without causing environmental pollution, safe and harmless preparation method, good resilience, low compression set value, and excellent antibacterial properties and its preparation process. Background technique [0002] Sponge is a very common porous material with good water absorption, some of which have good elasticity, deformation recovery and other properties, and can be used to clean items or to produce some comfortable and soft seat cushions. [0003] Commonly used sponges are made from wood cellulose fibers or expanded plastic polymers. Alternatively, there are natural sponges made from spongy animals, and most natural sponges are used for body cleaning or painting. In addition, there are three types of synthetic sponges made of other materials, namely low-density polyether (non...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L5/08C08L5/00C08K3/38C08J9/30C08J9/04
CPCC08J9/0061C08J9/0066C08J9/04C08J9/30C08J2305/08C08J2405/00C08K3/38
Inventor 卢伟
Owner 德清舒华泡沫座椅有限公司
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