CN116463857B - A durable, antibacterial, flame-retardant, multifunctional silk product and its preparation method - Google Patents
A durable, antibacterial, flame-retardant, multifunctional silk product and its preparation methodInfo
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- CN116463857B CN116463857B CN202310480477.3A CN202310480477A CN116463857B CN 116463857 B CN116463857 B CN 116463857B CN 202310480477 A CN202310480477 A CN 202310480477A CN 116463857 B CN116463857 B CN 116463857B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
- D06M13/282—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing phosphorus
- D06M13/292—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/10—Animal fibres
- D06M2101/12—Keratin fibres or silk
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/30—Flame or heat resistance, fire retardancy properties
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Abstract
本发明公开了一种耐久抗菌阻燃多功能真丝制品及其制备方法，将聚六亚甲基双胍、含苯二醛加入醇溶液中加热一段时间，控制聚六亚甲基双胍和含苯二醛之间发生醛胺缩合反应，然后加入亚磷酸酯，制得反应型抗菌阻燃整理液，然后将真丝面料浸入整理液中，通过浸渍法制得耐久抗菌阻燃多功能真丝面料。本发明制备的真丝面料具有协同抗菌、高效膨胀阻燃体系、耐水洗等优势。
This invention discloses a durable, antibacterial, and flame-retardant multifunctional silk product and its preparation method. Polyhexamethylene biguanide and phenylene dialdehyde are added to an alcohol solution and heated for a period of time to control the aldehyde-amine condensation reaction between the polyhexamethylene biguanide and phenylene dialdehyde. Then, phosphite is added to prepare a reactive antibacterial and flame-retardant finishing solution. The silk fabric is then immersed in the finishing solution, and the durable, antibacterial, and flame-retardant multifunctional silk fabric is obtained by impregnation. The silk fabric prepared by this invention has advantages such as synergistic antibacterial properties, a highly efficient intumescent flame-retardant system, and water resistance.
Description
Technical Field
The invention belongs to the technical field of textile processing, and particularly relates to a preparation method of a durable, antibacterial and flame-retardant multifunctional silk product.
Background
The silk fiber has good hygroscopicity, soft luster and soft hand feeling, and has special silk ringing feel, and is known as 'fiber queen'. China is a large country of silk, and the real silk yield is in the forefront of the world. Silk products are widely applied to high-grade textile fabrics, such as silk night clothes, cheongsam, scarf, bedding and the like. These fields have high requirements for the antibacterial performance and flame retardant performance of textiles. However, the antibacterial property of the silk fabric is poor, bacteria can be easily bred, nutrition and energy are provided for bacterial breeding, and the physical health of people is finally endangered. In addition, the real silk belongs to combustible fibers, and the Limiting Oxygen Index (LOI) of the product is only 23% -24%, so that the product is extremely easy to burn. Therefore, the antibacterial and flame-retardant multifunctional finishing significance for the silk products is great.
The polyhexamethylene biguanide is a better guanidine salt antibacterial agent applied at present, and mainly causes the bacterial cell membrane to be destroyed through electrostatic adsorption effect of positive charge and negatively charged bacterial cell membrane, thereby playing an antibacterial effect and being widely applied to the fields of medical appliances, public environments, home furnishings, fabrics, foods and the like. However, polyhexamethylene biguanide is a cationic polymer, has a repulsive interaction with amino groups of silk fibers, has high water solubility, and is poor in washing resistance of modified silk products, so that practical application requirements are difficult to meet.
The Chinese patent CN107724075A discloses a special flame retardant finishing agent for finishing ramie fabric, which adopts phosphorus-nitrogen flame retardant, chitosan, zirconium phosphate and zinc hydroxystannate coated halloysite nanotube and cerium phenylphosphonate as flame retardants, and is compounded with dimethylol ethylene urea, phosphoric acid, diethylene glycol, carboxyl silicone oil, epoxy silicone oil, octadecylamine polyoxyethylene ether, soybean lecithin, sodium tripolyphosphate, polyhexamethylene biguanide, nano zinc oxide sol, aloin, diethyl phosphoryl ethyl triethoxysilane and the like, and then the ramie fabric is subjected to flame retardant, antibacterial and ultraviolet-resistant multifunctional finishing, however, the using amount of the flame retardant is extremely high, and the finishing agent and the ramie fabric cannot be combined in a differential stable manner, so that the water washing resistance of the finished fabric is poor.
The static self-assembly of polyhexamethylene biguanide hydrochloride on cotton fabric and its antibacterial performance [ J ]. Textile school, 2012,33 (4): 86-90.) builds polyhexamethylene biguanide hydrochloride and sodium polystyrene sulfonate on cotton fiber surface by static self-assembly, the layer-by-layer static self-assembly method improves the washing resistance of polyhexamethylene biguanide hydrochloride antibacterial cotton fabric, however, the method needs multiple assembly to deposit anionic and cationic compound on fabric surface, the technological process is complicated, and the hand feeling of the fabric is seriously affected, and the method can not be applied to durable function modification of silk products.
In addition, the silk product has the advantages of low consumption of the antibacterial finishing agent required by antibacterial finishing, low concentration and high efficiency compared with flame-retardant finishing, and high consumption of the flame retardant required by flame-retardant finishing. Developing a finish agent having both flame retardant and antimicrobial functions without making the effective concentration of the antimicrobial groups too high is a difficult problem. At present, the problem is solved by adopting a mode of compounding an antibacterial finishing agent and a flame retardant, but the compatibility between the antibacterial finishing agent and the flame retardant and the durability of multifunctional modification are considered. Developing a highly efficient flame retardant system is one of the effective ways to reduce the content of flame retardant groups and match antibacterial groups.
Disclosure of Invention
In order to solve the problems, the invention provides a multifunctional real silk product which has excellent antibacterial performance and flame retardant performance, excellent washability, mild preparation conditions, simple operation and important practical application value.
The first object of the invention is to provide a preparation method of durable, antibacterial and flame-retardant multifunctional silk product, which comprises the following steps:
S1, carrying out aldehyde-amine condensation reaction on polyhexamethylene biguanide and benzene-containing dialdehyde, and adding phosphite ester after the reaction is finished to obtain an antibacterial flame-retardant finishing liquid;
s2, finishing the silk product by adopting the antibacterial flame-retardant finishing liquid to obtain the durable antibacterial flame-retardant multifunctional silk product.
Further, the benzene-containing dialdehyde is selected from one or more of terephthalaldehyde, 1, 3-benzaldehyde, 2, 5-dihydroxyterephthalaldehyde, 2-hydroxy isophthalaldehyde and 2, 5-dihydroxyterephthalaldehyde.
Further, in the step S1, the reaction temperature of the aldehyde-amine condensation reaction is 75-85 ℃, the reaction time is 30-60 min, and the rising temperature is favorable for promoting dissolution of the phthalaldehyde-containing material and promoting the condensation reaction of the polyhexamethylene biguanide and the phthalaldehyde-containing material.
Further, in step S1, the aldol condensation reaction is performed in the presence of an alcohol solution.
Further, the alcohol accounts for 5% -10% of the volume ratio of the alcohol solution system, the benzene-containing dialdehyde is difficult to dissolve in cold water, and the addition of the alcohol is helpful for promoting the dissolution of the benzene-containing dialdehyde.
Further, in the step S2, the mass ratio of the silk product to the antibacterial flame-retardant finishing liquid is 1:30-40.
Further, in the step S2, the finishing temperature is 75-85 ℃ and the finishing time is 40-60 min. In the finishing process, covalent bond grafting reaction can be carried out on aldehyde groups of polyhexamethylene biguanide/phthalaldehyde-containing condensate, aldehyde groups of phthalaldehyde-containing condensate, amino groups of silk fiber and P-H bonds of phosphite ester, and the temperature rise is helpful for promoting the reaction and enabling the antibacterial flame-retardant modification to be more uniform.
Further, silk products include, but are not limited to, silk fibers, silk fabrics, and the like.
The second object of the present invention is to provide a silk product obtained by the above preparation method.
The third object of the invention is to provide an antibacterial flame-retardant finishing method for silk fabrics, which comprises the following steps:
S1, carrying out aldehyde-amine condensation reaction on polyhexamethylene biguanide and benzene-containing dialdehyde, and adding phosphite ester after the reaction is finished to obtain an antibacterial flame-retardant finishing liquid;
S2, immersing the silk product into the antibacterial flame-retardant finishing liquid for finishing.
Preferably, the dosage of the polyhexamethylene biguanide is 0.5-3 g/L, and the increase of the dosage of the polyhexamethylene biguanide is helpful for further improving the antibacterial effect of silk products, but is wasteful if the dosage of the polyhexamethylene biguanide is too high.
Preferably, the dosage of the phenyldialdehyde is 3-7 g/L, the aldehyde group containing the phenyldialdehyde can be subjected to condensation reaction with the guanidine group of the polyhexamethylene biguanide, and can be subjected to Schiff base reaction with the amino group of the silk fiber, the dosage of the phenyldialdehyde is increased, the promotion of the reaction is facilitated, and the excessive use is wasted.
Preferably, the phosphite ester is one or more of diethyl phosphite or dimethyl phosphite, the using amount of the phosphite ester is 15-30 g/L, the increasing of the using amount of the phosphite ester is beneficial to improving the flame retardant effect of finishing the real silk product, and in the range provided by the patent, the finishing of the real silk product can obtain better flame retardant effect.
The invention provides an antibacterial flame-retardant finishing agent for silk fabrics, which is obtained by performing aldehyde-amine condensation reaction on polyhexamethylene biguanide and phthalaldehyde-containing aldehyde, and then adding phosphite ester at 75-85 ℃ for reaction.
In the invention, the guanidine group of polyhexamethylene biguanide and aldehyde group containing phthalaldehyde are subjected to condensation reaction, and mixed with phosphite ester to prepare reactive antibacterial flame-retardant finishing liquid, in the multifunctional finishing process, P-H bond of phosphite ester can be subjected to Pudovik addition reaction with imine C=N double bond of polyhexamethylene biguanide/phthalaldehyde-containing condensate, aldehyde group of polyhexamethylene biguanide/phthalaldehyde-containing condensate can be subjected to reaction with amino group of silk fiber to generate Schiff base C=N structure, aldehyde group of polyhexamethylene biguanide/phthalaldehyde-containing condensate, aldehyde group of silk fiber, amino group of silk fiber and P-H bond of phosphite ester can be subjected to Kabachnik-Fields reaction, and antibacterial group and flame-retardant group are grafted on silk fiber through chemical bond, so that the antibacterial flame-retardant multifunctional silk product is endowed with excellent water washing resistance.
The polyhexamethylene biguanide serving as a cationic antibacterial finishing agent mainly adsorbs bacteria through electrostatic action so that the bacteria cannot be split and propagated, activity is lost, meanwhile, the Schiff base structure generated in the crosslinking process of the finishing agent and the real silk also has antibacterial performance, and the antibacterial performance of the finished real silk product can be further improved through a synergistic effect with the antibacterial finishing agent.
The polyhexamethylene biguanide is rich in nitrogen elements and the phthalaldehyde is rich in aromatic groups, and can be organically combined with the phosphorus flame-retardant groups of phosphite esters to construct a high-efficiency intumescent flame-retardant system through a synergistic flame-retardant effect. In the heating process, the phosphorus-containing flame-retardant group of the system can promote the decomposition of the benzene-containing dialdehyde and the silk fiber into carbon, and the thermal decomposition of the nitrogen-containing group can generate a large amount of nonflammable gas, so that the carbon layer is rapidly expanded, and the thermal stability of the expanded carbon residue is high due to the high thermal stability of the aromatic ring and the imine C=N structure, so that the heat and oxygen can be effectively isolated, and the flame retardant property of the silk product is improved. Therefore, the flame-retardant system developed by the invention has higher flame-retardant efficiency, thereby reducing the consumption of the phosphorus-containing flame-retardant groups and realizing matching with antibacterial finishing.
The invention has the beneficial effects that:
(1) The reactive antibacterial flame-retardant finishing liquid prepared by the invention has excellent antibacterial effect by means of the synergistic antibacterial performance of the polyhexamethylene biguanide and Schiff base structure, and simultaneously has higher flame-retardant efficiency, and can improve the flame retardant property of real silk products through an intumescent flame-retardant mechanism;
(2) The aldehyde group of the polyhexamethylene biguanide/phthalaldehyde-containing condensate reacts with the phthalaldehyde-containing condensate, the silk fiber and the phosphite ester to form covalent bond combination, so that the antibacterial flame-retardant multifunctional silk product has excellent washing resistance;
(3) The preparation method disclosed by the invention is simple in preparation process, mild in reaction condition, short in flow, and wide in application prospect and important in practical application value.
Drawings
FIG. 1 is a vertical burning test picture of an antibacterial flame retardant multifunctional silk product and an unfinished silk product in example 1 of the present invention;
FIG. 2 shows the antibacterial rate of the antibacterial flame-retardant multifunctional silk products of example 1 and comparative example 1 after washing;
FIG. 3 shows the carbon length of the antibacterial flame-retardant multifunctional silk product of example 1 and comparative example 1 after water washing.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.
Example 1
A preparation method of durable antibacterial flame-retardant multifunctional silk product comprises the following specific steps:
Adding polyhexamethylene biguanide and terephthalaldehyde into distilled water/ethanol solution, wherein ethanol accounts for 8% of the volume ratio of the distilled water/ethanol system, the concentration of polyhexamethylene biguanide is 2g/L, the concentration of terephthalaldehyde is 5g/L, heating to 80 ℃, the reaction time is 50min, adding diethyl phosphite and the concentration of diethyl phosphite to 25g/L, obtaining antibacterial flame-retardant finishing liquid, immersing the real silk double-crepe fabric into the antibacterial flame-retardant finishing liquid, the mass ratio of the real silk double-crepe fabric to the antibacterial flame-retardant finishing liquid is 1:35, carrying out oscillation heat preservation at 80 ℃ for 50min, and carrying out water washing and drying to obtain the antibacterial flame-retardant multifunctional real silk double-crepe fabric.
Example 2
A preparation method of high-efficiency durable antibacterial silk fabric comprises the following specific steps:
Adding polyhexamethylene biguanide and 2, 5-dihydroxyterephthalaldehyde into distilled water/ethanol solution, wherein ethanol accounts for 6% of the volume ratio of the distilled water/ethanol system, the concentration of polyhexamethylene biguanide is 1g/L, the concentration of 2, 5-dihydroxyterephthalaldehyde is 4g/L, heating to 85 ℃ for 30min, adding dimethyl phosphite and the concentration of dimethyl phosphite are 20g/L, obtaining an antibacterial flame-retardant finishing liquid, immersing silk crepe satin fabric into the antibacterial flame-retardant finishing liquid, the mass ratio of the silk crepe satin fabric to the antibacterial flame-retardant finishing liquid is 1:30, oscillating and preserving heat at 85 ℃ for 40min, and washing and drying to obtain the antibacterial flame-retardant multifunctional silk crepe satin fabric.
Example 3
A preparation method of high-efficiency durable antibacterial silk fabric comprises the following specific steps:
Adding polyhexamethylene biguanide and 2-hydroxy isophthalaldehyde into distilled water/ethanol solution, wherein ethanol accounts for 7% of the volume ratio of the distilled water/ethanol system, the concentration of polyhexamethylene biguanide is 1.5g/L, the concentration of 2-hydroxy isophthalaldehyde is 5g/L, heating to 83 ℃, the reaction time is 45min, then adding diethyl phosphite, the concentration of diethyl phosphite is 23g/L, obtaining antibacterial flame-retardant finishing liquid, immersing the real silk double-crepe fabric into the antibacterial flame-retardant finishing liquid, the mass ratio of the real silk double-crepe fabric to the antibacterial flame-retardant finishing liquid is 1:33, carrying out oscillation heat preservation for 55min at 79 ℃, and carrying out water washing and drying to obtain the antibacterial flame-retardant multifunctional real silk double-crepe fabric.
Example 4
A preparation method of high-efficiency durable antibacterial silk fabric comprises the following specific steps:
Adding polyhexamethylene biguanide and 2, 5-dihydroxyterephthalaldehyde into distilled water/ethanol solution, wherein ethanol accounts for 10% of the volume ratio of the distilled water/ethanol system, the concentration of polyhexamethylene biguanide is 3g/L, the concentration of 2, 5-dihydroxyterephthalaldehyde is 7g/L, heating to 82 ℃ for 50min, adding diethyl phosphite and the concentration of diethyl phosphite to 30g/L to obtain an antibacterial flame-retardant finishing liquid, immersing the real silk double-crepe fabric into the antibacterial flame-retardant finishing liquid, the mass ratio of the real silk double-crepe fabric to the antibacterial flame-retardant finishing liquid is 1:38, oscillating and preserving heat at 78 ℃ for 60min, and washing and drying to obtain the antibacterial flame-retardant multifunctional real silk double-crepe fabric.
Comparative example 1
A preparation method of durable antibacterial flame-retardant multifunctional silk product is basically the same as that of example 1, except that terephthalaldehyde is not added, namely that the antibacterial flame-retardant finishing liquid only contains polyhexamethylene biguanide and diethyl phosphite, and no terephthalaldehyde is contained.
The antibacterial property, the flame retardant property and the washing resistance of the antibacterial flame retardant silk fabrics prepared in examples 1 to 4 and the antibacterial flame retardant silk fabrics prepared in comparative example 1 were tested.
The antibacterial performance of the antibacterial flame-retardant real silk fabric on escherichia coli and staphylococcus aureus is tested by referring to GB/T20944.3-2008, section 3 of evaluation of antibacterial performance of textiles, vibration method.
The Limiting Oxygen Index (LOI) of the antibacterial flame-retardant real silk fabric is measured according to GB/T5454-1997 standard of oxygen index method for experimental combustion performance of textiles.
The damage length of the antibacterial flame-retardant real silk fabric is measured according to GB/T5455-2014 'measurement of smoldering and continuous burning time of damage length of textile combustion performance in the vertical direction'.
The washing method of the antibacterial flame-retardant real silk fabric is carried out by referring to AATCC 61-2006 accelerated test of washing fastness for household and commercial use.
Finally, the antibacterial performance and the flame retardant performance of the antibacterial flame retardant real silk fabric are measured as shown in the following table 1:
As can be seen from Table 1, the antibacterial effect of the non-finished real silk fabric is poor, the antibacterial rate of the non-finished real silk fabric to escherichia coli and staphylococcus aureus is only 22.3% and 21.1%, the LOI of the non-finished real silk fabric is 23.6%, the non-finished real silk fabric is completely burnt in a vertical burning test, and the carbon length is 30cm, so that the flame retardant property of the non-finished real silk fabric is poor. The antibacterial rate of the silk product finished by the antibacterial flame-retardant finishing liquid disclosed by the invention on escherichia coli and staphylococcus aureus is respectively increased to 95.1% and 94.0%. After the concentration of the antibacterial finishing liquid is increased, the antibacterial rate of the antibacterial finishing liquid to escherichia coli and staphylococcus aureus can reach 99.9%, which shows that the finished silk product has excellent antibacterial effect. The LOI of the silk product finished by the antibacterial flame-retardant finishing liquid is increased to 29.0%, the carbon length is reduced to 10.9cm, and the flame retardant property of the multifunctional finished silk product is further increased along with the increase of the concentration of the antibacterial finishing liquid, so that the finished silk product has excellent flame retardant property.
As shown in fig. 2 and 3, the antibacterial and flame retardant properties of the finished silk fabrics gradually decrease as the number of water washing increases, because antibacterial and flame retardant groups are re-dissolved in the washing liquid during the water washing, resulting in reduced functionality. However, after 20 times of water washing, the antibacterial rate of the finished silk fabric on escherichia coli and staphylococcus aureus is still higher than 93.2% and 92.0%, the damage length is still lower than 15cm, and the requirement of B 1 -level flame retardant property in GB/T17591-2006 flame retardant fabric is met, which shows that the finished silk fabric has excellent water washing resistance.
The results show that the silk product finished by the method has excellent antibacterial performance, flame retardant performance and washing resistance.
As can be seen from comparing example 1 with comparative example 1, the finishing silk fabric in comparative example 1 can obtain good antibacterial effect and flame retardant effect, but after 20 times of washing, the antibacterial rate to escherichia coli and staphylococcus aureus is reduced to 62.5% and 60.3%, the carbon length is increased to 30cm, and the antibacterial effect and flame retardant effect are lost, because the polyhexamethylene biguanide and phosphite ester cannot generate stable covalent bond combination with silk fiber, and the polyhexamethylene biguanide is easily dissolved in water, easily falls off from silk products in the washing process, and is not resistant to washing.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (9)
1. The preparation method of the durable, antibacterial and flame-retardant multifunctional silk product is characterized by comprising the following steps of:
S1, carrying out aldehyde-amine condensation reaction on polyhexamethylene biguanide and benzene-containing dialdehyde, and adding phosphite ester after the reaction is finished to obtain an antibacterial flame-retardant finishing liquid;
S2, finishing the silk product by adopting the antibacterial flame-retardant finishing liquid to obtain the durable antibacterial flame-retardant multifunctional silk product, wherein the benzene-containing dialdehyde is selected from one or more of terephthalaldehyde, 1, 3-terephthalaldehyde, 2, 5-dihydroxyterephthalaldehyde, 2-hydroxy isophthalaldehyde and 2, 5-dihydroxyterephthalaldehyde.
2. The method of claim 1, wherein the aldol reaction temperature in step S1 is 75-85 ℃.
3. The process according to claim 1, wherein in step S1, the aldol reaction is carried out in the presence of an alcohol solution.
4. The method according to claim 1, wherein in the step S2, the mass ratio of the silk product to the antibacterial flame-retardant finishing liquid is 1:30-40.
5. The method of claim 1, wherein the finishing temperature is 75-85 ℃.
6. The method of claim 1, wherein the finishing time is 40-60 min in step S2.
7. A silk product obtained by the method of any one of claims 1 to 6.
8. The antibacterial flame-retardant finishing method for the silk fabric is characterized by comprising the following steps of:
S1, carrying out aldehyde-amine condensation reaction on polyhexamethylene biguanide and benzene-containing dialdehyde, and adding phosphite ester after the reaction is finished to obtain an antibacterial flame-retardant finishing liquid, wherein the benzene-containing dialdehyde is selected from one or more of terephthalaldehyde, 1, 3-phthalaldehyde, 2, 5-dihydroxyterephthalaldehyde, 2-hydroxy isophthalaldehyde and 2, 5-dihydroxyterephthalaldehyde;
S2, immersing the silk product into the antibacterial flame-retardant finishing liquid for finishing.
9. The antibacterial flame-retardant finishing agent for the silk fabric is characterized in that the antibacterial flame-retardant finishing agent is obtained by carrying out aldehyde-amine condensation on polyhexamethylene biguanide and benzene-containing dialdehyde, and then adding phosphite ester for reaction at 75-85 ℃, wherein the benzene-containing dialdehyde is selected from one or more of terephthalaldehyde, 1, 3-benzaldehyde, 2, 5-dihydroxyterephthalaldehyde, 2-hydroxy isophthalaldehyde and 2, 5-dihydroxyterephthalaldehyde.
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| CN117603271A (en) * | 2023-10-31 | 2024-02-27 | 苏州宝丽迪材料科技股份有限公司 | A linear phosphorus-nitrogen flame retardant and its preparation method and application |
| CN117661310A (en) * | 2023-11-17 | 2024-03-08 | 南通和顺兴纺织科技有限公司 | Modified cotton fabric and preparation method and application thereof |
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| GB884785A (en) * | 1956-05-04 | 1961-12-20 | Bradford Dyers Ass Ltd | Flame-proofing process |
| CN113089319A (en) * | 2021-04-09 | 2021-07-09 | 苏州大学 | Phosphorus/nitrogen/sulfur synergistic flame retardant and application thereof in flame retardant finishing of protein fiber products |
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| CN112442894B (en) * | 2020-11-02 | 2022-03-15 | 苏州大学 | A kind of preparation method of durable flame retardant silk product |
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| GB884785A (en) * | 1956-05-04 | 1961-12-20 | Bradford Dyers Ass Ltd | Flame-proofing process |
| CN113089319A (en) * | 2021-04-09 | 2021-07-09 | 苏州大学 | Phosphorus/nitrogen/sulfur synergistic flame retardant and application thereof in flame retardant finishing of protein fiber products |
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