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Method for preparing solid aldehyde cloth through two-step method

A solid-state, aldehyde cloth technology, applied in textiles and papermaking, fiber treatment, plant fibers, etc., can solve the problems of weak killing effect on bacterial spores, poor stability of solid aldehyde, low content of aldehyde groups, etc., to meet the stability requirements, Avoid hardening and brittleness and improve stability

Pending Publication Date: 2022-02-08
邯郸派瑞电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2% enhanced acidic glutaraldehyde uses polyoxyethylene fatty alcohol ether as a strengthening agent, which can enhance the bactericidal effect of glutaraldehyde. Its pH is lower than 5, and its stability is better than that of alkaline glutaraldehyde, which can inactivate viruses. The effect is stronger than that of alkaline glutaraldehyde, but the killing effect on bacterial spores is weaker than that of alkaline glutaraldehyde
This method uses heavy metal salts in the preparation process of the amine-based carrier, which has certain toxicity, and the aldehyde group is only loaded by stirring at room temperature. mmol / g

Method used

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  • Method for preparing solid aldehyde cloth through two-step method

Examples

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Comparison scheme
Effect test

Embodiment 1

[0028] A two-step method for preparing solid aldehyde cloth, the specific steps of the method are as follows:

[0029] (1) Add 1g of ethylene glycol diglycidyl ether to 100ml of polyvinylamine aqueous solution with a mass fraction of 5%, mix well to obtain a mixed solution; then soak 5g of spunlace non-woven fabric in the mixed solution for 5min, take it out and roll Extrude and dehydrate the car to keep the liquid-carrying rate at 100%; heat and solidify in an oven at 70°C to obtain a polyvinylamine modified spunlace nonwoven fabric, and the mass of the spunlace nonwoven fabric is increased to 8g, and the sample is tested at this time The liquid pick-up rate was 20%.

[0030] (2) Soak 8g of polyvinylamine modified spunlace nonwoven fabric in 65g of 5% glutaraldehyde aqueous solution for 5min, the aldehyde group in glutaraldehyde and the amine in polyvinylamine modified spunlace nonwoven fabric The base molar ratio was 2:1, and the solution temperature was kept at 10°C. Afte...

Embodiment 2

[0032] A two-step method for preparing solid aldehyde cloth, the specific steps of the method are as follows:

[0033] (1) Add 5g of polyethylene glycol diglycidyl ether to 100ml of triethylenetetramine aqueous solution with a mass fraction of 20%, mix well to obtain a mixed solution; then soak 2g of apocynum in the above solution for 10min, take it out and centrifuge Dehydration, the liquid-carrying rate is 300%; it is placed in an oven at 100° C. for heating and curing to obtain triethylenetetramine-modified apocynum, and the mass of the apocynum is increased to 5 g, and the liquid-carrying rate is 10% at this time for sampling test.

[0034] (2) 5g triethylenetetramine modified apocynum is soaked in 30g mass fraction and is 20min in the succinic dialdehyde solution of 50%, and the aldehyde group in the succinic dialdehyde and the amine group molar ratio in the triethylenetetramine are 5:1, Keep the solution temperature at 20 °C. After taking it out, rinse it with distilled...

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Abstract

The invention relates to a method for preparing solid aldehyde cloth through a two-step method, and belongs to the technical field of high polymer material manufacturing. The method comprises the following steps: soaking a hydrophilic fiber product in a mixed solution of polyamine and a cross-linking agent, and heating and curing at 70-100 DEG C to obtain a polyamine modified matrix material; and soaking the material in a polyaldehyde aqueous solution with the solution temperature of 10-20 DEG C for 5-20 minutes, taking out the material, washing the material with water to remove free aldehyde groups, and vacuumizing to 0.3 Mpa to obtain the solid aldehyde cloth. The cross-linking agent is a substance with nitrogen rings at both ends of a molecular skeleton, oxygen rings at both ends of the molecular skeleton or lipid groups at both ends of the molecular skeleton. According to the solid aldehyde cloth prepared through the method, a large number of aldehyde groups are fixed to the surface of the base material, the content of the aldehyde groups can reach 6.1 mmol / g, stability is good, harm caused by volatilization of polyaldehyde to the human body is avoided, the steps are simple, the reaction conditions are mild, energy consumption is low, and the method is suitable for industrial large-scale production.

Description

technical field [0001] The invention relates to a two-step method for preparing solid aldehyde cloth, which belongs to the technical field of polymer material manufacturing. Background technique [0002] Aldehyde disinfectants mainly rely on the alkylation reaction between the aldehyde group and the sulfhydryl group, hydroxyl group, carboxyl group and amino group of the bacterial protein, so that the protein coagulates and achieves the purpose of disinfection and sterilization. Among the known aldehydes, glutaraldehyde is the best protein cross-linking agent. The cross-linking features are high activity, fast reaction, high binding capacity, stable product, and strong resistance to boiling water, acid, and enzymes. The sterilizing concentration of glutaraldehyde is 2%. There are mainly two types of glutaraldehyde on the market: 2% alkaline glutaraldehyde and 2% fortified acid glutaraldehyde. Glutaraldehyde has the strongest bactericidal effect when the pH is 7.5-8.5. The s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/61D06M13/11D06M13/123D06M13/332D06M15/53D06M101/06D06M101/12D06M101/16
CPCD06M15/61D06M13/11D06M13/123D06M13/332D06M15/53D06M2101/06D06M2101/12D06M2101/16
Inventor 陈兆文苗雷孙世操刘彦洋白亚楠
Owner 邯郸派瑞电器有限公司
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