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A kind of antibacterial flame-retardant cellulose and its preparation and application

A technology of flame retardant cellulose and cellulose, applied in fiber processing, biochemical fiber processing, textiles and papermaking, etc., can solve problems such as building damage, national economic construction, loss of people's lives and property, and low limiting oxygen index.

Active Publication Date: 2021-11-02
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] On the other hand, most textiles are currently flammable products, and their limiting oxygen index (LOI) is low, which is extremely flammable in the atmospheric environment. According to incomplete statistics, casualties caused by fire accidents occur almost every year in my country. and building damage, causing immeasurable losses to national economic construction and people's lives and property

Method used

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  • A kind of antibacterial flame-retardant cellulose and its preparation and application
  • A kind of antibacterial flame-retardant cellulose and its preparation and application
  • A kind of antibacterial flame-retardant cellulose and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 0.2 g of NaOH was weighed and dissolved in 1 L of deionized water to prepare NaOH aq with a pH of 11.7 as a reaction solution for the Michael addition reaction.

[0045] Weigh 0.1g cotton fiber and immerse in a single-necked flask with 20mL NaOH aq, then add 40wt% KH (0.04g, n(Si)=0.16mmol), 7wt% PEI (0.007g, n(N )=0.1628mmol), a one-necked flask was used as a reaction vessel and placed in a magnetic heating stirrer, and heated to 30° C. for 12 hours. After the reaction, the modified cotton fibers were ultrasonically cleaned for 10 min, and rinsed with deionized water to fully remove the substances that were not chemically grafted on the surface of the fibers. After cleaning, they were dried in a blast oven at 60°C to obtain the product (I).

[0046] The product (I) was submerged in 20 mL of deionized water, and diluted HCl was added to adjust the pH between 2-3, and then 10 wt% of KH (0.01 g, n(Si)=0.04 mmol), 20 wt % of VA ( 0.02 g, n(P) = 0.185 mmol), 5 wt% of MAPH...

Embodiment 2

[0049] 0.2 g of NaOH was weighed and dissolved in 1 L of deionized water to prepare NaOH aq with a pH of 11.7 as a reaction solution for the Michael addition reaction.

[0050] Weigh 0.1g cotton fiber and immerse in a single-necked flask with 20mL NaOH aq, then add 40wt% KH (0.04g, n(Si)=0.16mmol), 7wt% PEI (0.007g, n(N )=0.1628mmol), a one-necked flask was used as a reaction vessel and placed in a magnetic heating stirrer, and heated to 30° C. for 12 hours. After the reaction, the modified cotton fibers were ultrasonically cleaned for 10 min, and rinsed with deionized water to fully remove the substances that were not chemically grafted on the surface of the fibers. After cleaning, they were dried in a blast oven at 60°C to obtain the product (I).

[0051] The product (I) was submerged in 20 mL of deionized water, and diluted HCl was added to adjust the pH between 2-3, and then 10 wt% of KH (0.01 g, n(Si)=0.04 mmol), 20 wt % of VA ( 0.02g, n(P)=0.185mmol), 5 wt% of CDMA (0....

Embodiment 3

[0054] 0.2 g of NaOH was weighed and dissolved in 1 L of deionized water to prepare NaOH aq with a pH of 11.7 as a reaction solution for the Michael addition reaction.

[0055] Weigh 0.1g of cellulose pulp, immerse in a single-necked flask equipped with 20mL NaOH aq, then add 40wt% KH (0.04g, n(Si)=0.16mmol), 7wt% PEI (0.007g, n(N)=0.1628mmol), a one-necked flask was used as a reaction vessel and placed in a magnetic heating stirrer, and heated to 30° C. for 18 hours. After the reaction, the modified pulp was ultrasonically cleaned for 10 minutes, rinsed with deionized water to fully remove the substances that were not chemically grafted on the surface of the cellulose pulp, and dried in a blast oven at 60°C after cleaning. The product (I) is obtained.

[0056] The product (I) was submerged in 20 mL of deionized water, and diluted HCl was added to adjust the pH between 2-3, and then 10 wt% of KH (0.01 g, n(Si)=0.04 mmol), 20 wt % of VA ( 0.02g, n(P)=0.185mmol), 5 wt% of MAPH...

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PUM

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Abstract

The invention relates to an antibacterial and flame-retardant cellulose and its preparation and application. The raw material components include: cellulose, 3-(methacryloyloxy)propyltrimethoxysilane KH, polyethyleneimine PEI, vinylphosphonic acid VA , antibacterial agent, initiator. Compared with the original cellulose material, the modified cellulose of the present invention can reduce the maximum heat release rate to about 50% of the original, and the total heat release can drop to about 67% of the raw material; The bacteria all have excellent antibacterial effect, and still have 98% antibacterial rate after 30 times of washing.

Description

technical field [0001] The invention belongs to the field of functional cellulose and its preparation and application, in particular to an antibacterial and flame-retardant cellulose and its preparation and application. Background technique [0002] With the continuous progress of society and the rapid development of science and technology, people's demand for materials is no longer limited to traditional fields such as clothing and home textiles, but requires the materials used to have certain specific functions to meet the needs generated during use, such as anti-mildew , antibacterial, filtering, adsorption, anti-ultraviolet, radiation protection, waterproof and moisture-permeable, antistatic, dustproof, antifouling, flame retardant and other functions. [0003] In addition, with the scarcity of fossil resources and the increasingly serious environmental problems caused by waste chemical fiber products, the use of natural renewable fiber materials has become particularly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M14/04C08F251/02C08F230/02C08F230/08
CPCC08F251/02D06M14/04D06M16/00C08F230/02C08F230/08
Inventor 吴德群赵文静李娜李发学王学利俞建勇
Owner DONGHUA UNIV
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