CN116254637A - Waterproof flame-retardant polyester fabric - Google Patents
Waterproof flame-retardant polyester fabric Download PDFInfo
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- CN116254637A CN116254637A CN202310255008.1A CN202310255008A CN116254637A CN 116254637 A CN116254637 A CN 116254637A CN 202310255008 A CN202310255008 A CN 202310255008A CN 116254637 A CN116254637 A CN 116254637A
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
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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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/68—Polyesters containing atoms other than carbon, hydrogen and oxygen
- C08G63/692—Polyesters containing atoms other than carbon, hydrogen and oxygen containing phosphorus
- C08G63/6924—Polyesters containing atoms other than carbon, hydrogen and oxygen containing phosphorus derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/6926—Dicarboxylic acids and dihydroxy compounds
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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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/07—Addition of substances to the spinning solution or to the melt for making fire- or flame-proof filaments
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/513—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads heat-resistant or fireproof
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/527—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads waterproof or water-repellent
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
- D04B1/16—Other fabrics or articles characterised primarily by the use of particular thread materials synthetic threads
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
Abstract
The invention discloses a waterproof flame-retardant polyester fabric, which belongs to the technical field of functional fabrics and is woven by modified polyester fibers, wherein the modified polyester fibers comprise the following raw materials in parts by weight: 50 parts of PET slice, 25-30 parts of modified PET, 1.8-2 parts of silane coupling agent and 6-7 parts of nano aluminum oxide. The modified polyester fiber is woven by using PET and modified PET as base materials, the modified PET is copolyester, and a block of a flame-retardant monomer and a long-chain alkyl monomer is introduced into the original PET molecular chain, so that the flame-retardant monomer can produce a synergistic flame-retardant effect with nano aluminum oxide, and the modified polyester fiber has safe, efficient, stable and durable flame-retardant characteristics; the long-chain alkyl monomer can improve the hydrophobic property of the modified PET, and is shown as the enhancement of the waterproof property of the modified polyester fiber. The obtained fabric has the functional characteristics of water resistance and flame retardance, and has wide application value in the field of characteristic clothing.
Description
Technical Field
The invention belongs to the technical field of functional fabrics, and particularly relates to a waterproof flame-retardant polyester fabric.
Background
Polyester is an important variety in synthetic fibers, is a commodity name of polyester fibers, and is a fiber prepared from polyethylene terephthalate (PET), which is a fiber-forming polymer prepared by esterification or transesterification and polycondensation reactions with Polyethylene Terephthalate (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (MEG) as raw materials, and is spun and post-treated. From the molecular composition of terylene, it is composed of short aliphatic hydrocarbon chain, ester group, benzene ring and alcohol-terminated hydroxyl, and the terylene has no other polar groups except two alcohol-terminated hydroxyl groups, so the terylene fiber has extremely poor hydrophilicity. The polyester molecules also contain aliphatic hydrocarbon chains, which can lead the polyester molecules to have certain flexibility, but because the polyester molecules also contain benzene rings which can not rotate inwards, the polyester macromolecules are basically rigid molecules, and the molecular chains are easy to keep linear, so the polyester macromolecules can easily form crystallization under the condition, and the crystallinity and the orientation of the polyester are higher.
The limiting oxygen index of the terylene face fabric is only 20-22%, the flame retardance is poor, and molten drips can be formed during combustion, so that flame propagation and secondary injury are caused. Therefore, the improvement of the flame retardant property of the polyester fabric is very necessary in the development of the polyester fabric. In the related art, the flame-retardant polyester fabric is mainly added with a flame-retardant auxiliary agent in the after-finishing and softening process, the auxiliary agent is attached to the surface of the fiber, and absorbs heat in a combustion domain under the condition of fabric combustion, dilutes and isolates air, so that combustion is prevented, but as a flame-retardant main machine is attached to the surface of the fiber, the washing auxiliary agent is washed off for many times, and the flame-retardant performance of the polyester fabric is weakened.
In addition, when the polyester fabric is used for special clothing of outdoor staff, the fabric is required to have good waterproof performance, so that the polyester fabric has the waterproof and flame-retardant functional characteristics at the same time, and meets the high requirements on the special clothing fabric.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a waterproof flame-retardant polyester fabric.
The modified polyester fiber is woven by using PET and modified PET as base materials, the modified PET is copolyester, and a block of a flame-retardant monomer and a long-chain alkyl monomer is introduced into an original PET molecular chain, so that the flame-retardant monomer can produce a synergistic flame-retardant effect with nano aluminum oxide, and the modified polyester fiber has safe, efficient, stable and durable flame-retardant characteristics; the long-chain alkyl monomer can improve the hydrophobic property of the modified PET, thus representing the enhancement of the waterproof property of the modified polyester fiber.
The aim of the invention can be achieved by the following technical scheme:
a waterproof flame-retardant polyester fabric is woven by modified polyester fibers;
the modified polyester fiber comprises the following raw materials in parts by weight: 50 parts of PET slice, 25-30 parts of modified PET, 1.8-2 parts of silane coupling agent and 6-7 parts of nano aluminum oxide;
the raw materials are mixed according to a certain proportion and spun by a melt spinning method to obtain the modified polyester fiber.
Further, the silane coupling agent is HD-111 or KH570; the silane coupling agent can improve the interfacial compatibility of the nano aluminum oxide and the PET matrix and promote dispersion.
Further, the modified PET is prepared by the steps of:
s1, adding 4-hydroxybenzaldehyde, ethanolamine and ethanol into a three-neck flask with a stirrer and a reflux condenser, heating and raising the temperature, carrying out reflux reaction for 12 hours at the constant temperature of 85 ℃, removing solvent ethanol by rotary evaporation after the reaction is finished, adding distilled water into a product, mixing uniformly, extracting with diethyl ether, taking an organic phase, and removing the solvent diethyl ether by rotary evaporation to obtain an intermediate 1; the dosage ratio of the 4-hydroxybenzaldehyde, the ethanolamine and the ethanol is 0.1mol:0.11mol:350mL;
-CHO on 4-hydroxybenzaldehyde molecule and-NH on ethanolamine molecule 2 Chemical reaction is carried out to generate Schiff base to obtain an intermediate 1, and the reaction process is as follows:
s2, adding DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide), an intermediate 1 and DMF (N, N-dimethylformamide) into a three-necked flask with a stirrer and a reflux condenser, introducing nitrogen to replace air in the flask, heating the system to 90 ℃ under the protection of nitrogen and under the stirring condition for three times, keeping the temperature for 55-60min (fully dissolving DOPO), heating to 130 ℃ for reaction for 6h, ending the reaction, pouring a large amount of distilled water into an ice water bath to precipitate after the product is cooled to room temperature, carrying out reduced pressure suction filtration, repeatedly washing a filter cake with petroleum ether for 3 times, and drying in a vacuum oven at 80 ℃ for 10h to obtain a flame-retardant monomer; the ratio of DOPO, intermediate 1 and DMF was 21.6g:16.5g:150mL;
the reactive P-H of DOPO and-C=N-on the intermediate 1 molecule undergo an addition reaction to obtain a flame-retardant monomer, wherein the flame-retardant monomer is a diol compound, and a branched chain contains DOPO substituent groups, and the reaction process is as follows:
s3, adding N-octylamine and acetone into a dry three-neck flask with a stirring device and a reflux condensing device, vacuumizing and introducing N at normal temperature 2 Repeating the operation for three times, heating to raise the temperature, and stabilizing the temperature at 50-55deg.C in N 2 Slowly dripping acetone solution (with concentration of 1 mol/L) dissolved with propylene oxide into a flask under the protection and stirring, continuously stirring at the constant temperature of 50-55 ℃ for 2 hours after the dripping is finished, and removing acetone by rotary evaporation after the reaction is finished to obtain a long-chain alkyl monomer; the ratio of the amounts of n-octylamine, acetone and propylene oxide in acetone solution was 0.1mol:100mL:210mL;
-NH on propylene oxide and n-octylamine molecules 2 The method is characterized in that a ring-opening reaction is carried out to obtain a long-chain alkyl monomer which is also a diol compound, and a molecular branched chain contains straight long-chain alkyl, wherein the reaction process is as follows:
s4, adding terephthalic acid, ethylene glycol and antimony trioxide into a reaction kettle, reacting for 2 hours at the temperature of 240 ℃ and the pressure of 0.35MPa, adding a flame-retardant monomer and a long-chain alkyl monomer into the reaction system, performing a preshrinking reaction for 1 hour at the temperature of 260 ℃ and the vacuum degree of 1000Pa, then heating to 280 ℃ and reacting for 2 hours at the vacuum degree of 100Pa, finally discharging to a water tank, rapidly cooling, and performing granulation and drying procedures to obtain the modified PET; the dosage ratio of terephthalic acid, ethylene glycol, antimony trioxide, flame retardant monomer and long chain alkyl monomer is 100g to 50-60g to 0.05g to 8-10g to 4-5g;
the polymerization reaction occurs as follows:
according to the invention, a series of chemical reactions are adopted to synthesize the flame-retardant monomer and the long-chain alkyl monomer which are glycol compounds, the glycol compounds are used as functional monomers to participate in the PET copolymerization process to obtain the modified PET, the obtained modified PET is copolyester, the block of the flame-retardant monomer and the long-chain alkyl monomer is introduced into the original PET molecular chain, and the side chain of the block of the flame-retardant monomer contains DOPO substituent groups, so that the flame-retardant PET belongs to safe and nontoxic flame-retardant components, and can endow the modified PET with certain flame-retardant characteristics, and the flame-retardant components react with the PET matrix through chemical bonding, so that the modified PET has the advantages of high fastness and washing fastness, and has safe, nontoxic, stable and durable flame-retardant properties; the side chain of the long-chain alkyl monomer block contains long-chain alkyl (hydrophobic group) which is directionally arranged in the PET macromolecular chain, so that a structure that the hydrophobic group is arranged outside the PET molecular chain is formed, and the modified PET hydrophobicity is enhanced;
it is further described that the DOPO flame-retardant component in the flame-retardant monomer block is positioned on a side chain, so that the structural regularity of the main chain is not excessively affected, the performance is not greatly reduced, and the DOPO in the flame-retardant monomer block and the added nano aluminum oxide generate a synergistic flame-retardant effect, and the DOPO and the added nano aluminum oxide realize flame retardance respectively from different mechanisms, so that the modified polyester fiber has comprehensive and efficient flame retardance;
the modified PET and the PET slice also have excellent compatibility, and the modified PET and the PET slice are combined for use, so that the degree of performance influence on the polyester fiber caused by the damage of the regular chain structure of the modified PET can be overcome, the mechanical property of the polyester fabric is maintained, and the polyester fiber can also have durable functional characteristics.
The invention has the beneficial effects that:
the fabric is woven by modified polyester fibers, PET and modified PET are used as base materials in the modified polyester fibers, the modified PET is copolyester, and a block of a flame-retardant monomer and a long-chain alkyl monomer is introduced into an original PET molecular chain, so that the flame-retardant monomer can produce a synergistic flame-retardant effect with nano aluminum oxide, and the modified polyester fibers have safe, efficient, stable and durable flame-retardant characteristics; the long-chain alkyl monomer can improve the hydrophobic property of the modified PET, so that the waterproof property of the modified polyester fiber is enhanced; therefore, the obtained fabric has the functional characteristics of water resistance and flame retardance, and has wide application value in the field of characteristic clothing.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Preparation of modified PET:
s1, adding 0.1mol of 4-hydroxybenzaldehyde, 0.11mol of ethanolamine and 350mL of ethanol into a three-necked flask with a stirrer and a reflux condenser, heating and heating, carrying out reflux reaction for 12 hours at a constant temperature of 85 ℃, removing solvent ethanol by rotary evaporation after the reaction is finished, adding distilled water into a product, mixing uniformly, extracting with diethyl ether, taking an organic phase, and removing the solvent diethyl ether by rotary evaporation to obtain an intermediate 1;
s2, adding 21.6g of DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide), 16.5g of intermediate 1 and 150mL of DMF (N, N-dimethylformamide) into a three-necked flask with a stirrer and a reflux condenser, introducing nitrogen to replace air in the flask, heating the system to 90 ℃ for 55min under the protection of nitrogen and stirring conditions after the replacement operation, heating to 130 ℃ for reaction for 6h, ending the reaction, pouring a large amount of distilled water into an ice water bath after the product is cooled to room temperature, precipitating and filtering under reduced pressure, repeatedly washing a filter cake with petroleum ether for 3 times, and drying in a vacuum oven at 80 ℃ for 10h to obtain a flame-retardant monomer;
s3, adding 0.1mol of N-octylamine and 100mL of acetone into a dry three-neck flask with a stirring device and a reflux condensing device, vacuumizing and introducing N at normal temperature 2 Repeating the operation for three times, heating to raise the temperature, and stabilizing the temperature at 50 ℃ to N 2 Under the protection and stirring, slowly dripping 210mL of acetone solution (with the concentration of 1 mol/L) dissolved with propylene oxide into a flask, continuously stirring at the constant temperature of 50 ℃ for 2 hours after the dripping is finished, and removing acetone by rotary evaporation after the reaction is finished to obtain a long-chain alkyl monomer;
s4, adding 100g of terephthalic acid, 50g of ethylene glycol and 0.05g of antimony trioxide into a reaction kettle, reacting for 2 hours at the temperature of 240 ℃ and the pressure of 0.35MPa, adding 8g of flame-retardant monomer and 4g of long-chain alkyl monomer into the reaction system, performing a preshrinking reaction for 1 hour at the temperature of 260 ℃ and the vacuum degree of 1000Pa, then heating to 280 ℃ and reacting for 2 hours at the vacuum degree of 100Pa, discharging to a water tank, cooling quickly, and performing granulating and drying procedures to obtain the modified PET.
Example 2
Preparation of modified PET:
s1, adding 0.1mol of 4-hydroxybenzaldehyde, 0.11mol of ethanolamine and 350mL of ethanol into a three-necked flask with a stirrer and a reflux condenser, heating and heating, carrying out reflux reaction for 12 hours at a constant temperature of 85 ℃, removing solvent ethanol by rotary evaporation after the reaction is finished, adding distilled water into a product, mixing uniformly, extracting with diethyl ether, taking an organic phase, and removing the solvent diethyl ether by rotary evaporation to obtain an intermediate 1;
s2, adding 21.6g of DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide), 16.5g of intermediate 1 and 150mL of DMF (N, N-dimethylformamide) into a three-necked flask with a stirrer and a reflux condenser, introducing nitrogen to replace air in the flask, heating the system to 90 ℃ for 60min under the protection of nitrogen and stirring conditions after the replacement operation, heating to 130 ℃ for reaction for 6h, ending the reaction, pouring a large amount of distilled water into an ice water bath after the product is cooled to room temperature, precipitating and filtering under reduced pressure, repeatedly washing a filter cake with petroleum ether for 3 times, and drying in a vacuum oven at 80 ℃ for 10h to obtain a flame-retardant monomer;
s3, adding 0.1mol of N-octylamine and 100mL of acetone into a dry three-neck flask with a stirring device and a reflux condensing device, vacuumizing and introducing N at normal temperature 2 Repeating the operation for three times, heating to raise the temperature, and stabilizing the temperature at 55 ℃ to N 2 Under the protection and stirring, slowly dripping 210mL of acetone solution (with the concentration of 1 mol/L) dissolved with propylene oxide into a flask, continuously stirring at the constant temperature of 55 ℃ for 2 hours after the dripping is finished, and removing acetone by rotary evaporation after the reaction is finished to obtain a long-chain alkyl monomer;
s4, adding 100g of terephthalic acid, 60g of ethylene glycol and 0.05g of antimony trioxide into a reaction kettle, reacting for 2 hours at the temperature of 240 ℃ and the pressure of 0.35MPa, adding 10g of flame-retardant monomer and 5g of long-chain alkyl monomer into the reaction system, performing a preshrinking reaction for 1 hour at the temperature of 260 ℃ and the vacuum degree of 1000Pa, then heating to 280 ℃ and reacting for 2 hours at the vacuum degree of 100Pa, discharging to a water tank, cooling quickly, and performing granulation and drying procedures to obtain the modified PET.
Example 3
The modified polyester fiber comprises the following raw materials in parts by weight: 50 parts of PET slices, 25 parts of modified PET prepared in example 1, and 6 parts of nano aluminum oxide, wherein the silane coupling agent is HD-1111.8 parts;
the raw materials are mixed according to a certain proportion, and then spun by a melt spinning method to prepare modified polyester fibers, and finally the modified polyester fibers are spun into the fabric.
Example 4
The modified polyester fiber comprises the following raw materials in parts by weight: 50 parts of PET slice, 27.5 parts of modified PET prepared in example 2, 5701.9 parts of silane coupling agent KH and 6.5 parts of nano aluminum oxide;
the raw materials are mixed according to a certain proportion, and then spun by a melt spinning method to prepare modified polyester fibers, and finally the modified polyester fibers are spun into the fabric.
Example 5
The modified polyester fiber comprises the following raw materials in parts by weight: 50 parts of PET slice, 30 parts of modified PET prepared in example 1, HD-1112 parts of silane coupling agent and 7 parts of nano aluminum oxide;
the raw materials are mixed according to a certain proportion, and then spun by a melt spinning method to prepare modified polyester fibers, and finally the modified polyester fibers are spun into the fabric.
Comparative example
The modified PET in example 3 was replaced with a plain PET chip, and the rest of the raw materials and the preparation process were unchanged.
The fabrics obtained in examples 3-5 and comparative example were subjected to the following performance tests:
limiting oxygen index: detecting limiting oxygen index of the terylene fabric according to GB/T5454-1997 oxygen index method for textile combustion performance test;
water contact angle: testing the contact angle of the sample by adopting a contact angle measuring instrument;
burst strength: the method comprises the steps of detecting the bursting strength of 110g/m of the terylene fabric according to GB/T19976-2005 'determination of bursting strength of textiles Steel ball method';
rebound rate: detecting the rebound rate of the polyester fabric according to FZ/T70006-2004 test method of tensile elastic recovery rate of knitted fabric;
| example 3 | Example 4 | Example 5 | Comparative example | |
| Limiting oxygen index/% | 33.1 | 33.5 | 33.4 | 28.3 |
| Water contact angle/° | 128.2 | 128.9 | 128.5 | 92.5 |
| Burst strength/N | 316 | 320 | 318 | 327 |
| Rebound rate/% | 96.6 | 96.9 | 96.8 | 97.9 |
As can be seen from the data in the table, the polyester fabric obtained by the invention has the bursting strength and the rebound rate which meet the requirements, namely the polyester fabric has the mechanical properties which meet the requirements; the obtained polyester fabric has a limiting oxygen index of more than 33% and a water contact angle of more than 128 degrees, which indicates that the polyester fabric has high-efficiency flame retardant property and good waterproof performance; it is known from the data of comparative examples that the introduction of modified PET can achieve effective improvement of flame retardant properties and waterproof properties.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative and explanatory of the invention, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.
Claims (7)
1. The waterproof flame-retardant polyester fabric is woven by modified polyester fibers, and is characterized by comprising the following raw materials in parts by weight: 50 parts of PET slice, 25-30 parts of modified PET, 1.8-2 parts of silane coupling agent and 6-7 parts of nano aluminum oxide;
wherein the modified PET is prepared by the following steps:
s1, adding 4-hydroxybenzaldehyde, ethanolamine and ethanol into a three-neck flask with a stirrer and a reflux condenser, heating and raising the temperature, carrying out reflux reaction for 12 hours at the constant temperature of 85 ℃, removing solvent ethanol by rotary evaporation after the reaction is finished, adding distilled water into a product, mixing uniformly, extracting with diethyl ether, taking an organic phase, and removing the solvent diethyl ether by rotary evaporation to obtain an intermediate 1;
s2, adding DOPO, an intermediate 1 and DMF into a three-necked flask with a stirrer and a reflux condenser, introducing nitrogen to replace air in the flask, after three times of replacement operation, heating the system to 90 ℃ under the protection of nitrogen and stirring conditions, preserving heat for 55-60min, heating to 130 ℃ to react for 6h, ending the reaction, pouring a large amount of distilled water into an ice water bath to precipitate after the product is cooled to room temperature, decompressing and filtering, repeatedly washing a filter cake with petroleum ether for 3 times, and drying in a vacuum oven at 80 ℃ for 10h to obtain a flame-retardant monomer;
s3, preparing a long-chain alkyl monomer;
s4, adding terephthalic acid, ethylene glycol and antimony trioxide into a reaction kettle, reacting for 2 hours at the temperature of 240 ℃ and the pressure of 0.35MPa, adding a flame-retardant monomer and a long-chain alkyl monomer into the reaction system, performing a preshrinking reaction for 1 hour at the temperature of 260 ℃ and the vacuum degree of 1000Pa, then heating to 280 ℃ and reacting for 2 hours at the vacuum degree of 100Pa, finally discharging to a water tank, rapidly cooling, and performing granulation and drying procedures to obtain the modified PET.
2. The waterproof flame-retardant polyester fabric according to claim 1, wherein the dosage ratio of 4-hydroxybenzaldehyde, ethanolamine and ethanol in the step S1 is 0.1mol:0.11mol:350mL.
3. The waterproof flame-retardant polyester fabric according to claim 1, wherein the dosage ratio of DOPO, intermediate 1 and DMF in the step S2 is 21.6g:16.5g:150mL.
4. The waterproof flame-retardant polyester fabric as claimed in claim 1, wherein the specific preparation process of the long-chain alkyl monomer is as follows: adding N-octylamine and acetone into a dry three-neck flask with a stirring device and a reflux condensing device, vacuumizing and introducing N at normal temperature 2 Repeating the operation for three times, heating to raise the temperature, and stabilizing the temperature at 50-55deg.C in N 2 Slowly dripping acetone solution containing propylene oxide into flask under protection and stirring, and continuing at 50-55deg.CStirring and reacting for 2 hours at constant temperature, and removing acetone by rotary evaporation after the reaction is finished to obtain the long-chain alkyl monomer.
5. The waterproof flame-retardant polyester fabric according to claim 4, wherein the dosage ratio of the n-octylamine to the acetone solution of acetone to propylene oxide is 0.1mol:100mL:210mL; the concentration of the acetone solution of propylene oxide was 1mol/L.
6. The waterproof flame-retardant polyester fabric according to claim 1, wherein the dosage ratio of terephthalic acid, ethylene glycol, antimony trioxide, flame-retardant monomers and long-chain alkyl monomers in the step S4 is 100g:50-60g:0.05g:8-10g:4-5g.
7. The waterproof flame-retardant polyester fabric according to claim 1, wherein the silane coupling agent is HD-111 or KH570.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116623428A (en) * | 2023-07-25 | 2023-08-22 | 江苏恒力化纤股份有限公司 | Preparation method of durable flame-retardant anti-dripping polyester fabric |
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2023
- 2023-03-16 CN CN202310255008.1A patent/CN116254637A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116623428A (en) * | 2023-07-25 | 2023-08-22 | 江苏恒力化纤股份有限公司 | Preparation method of durable flame-retardant anti-dripping polyester fabric |
| CN116623428B (en) * | 2023-07-25 | 2023-09-22 | 江苏恒力化纤股份有限公司 | Preparation method of durable flame-retardant anti-dripping polyester fabric |
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