CN113564924A - Finishing method for realizing self-adjustment of air permeability of polyester fabric - Google Patents
Finishing method for realizing self-adjustment of air permeability of polyester fabric Download PDFInfo
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- CN113564924A CN113564924A CN202110946409.2A CN202110946409A CN113564924A CN 113564924 A CN113564924 A CN 113564924A CN 202110946409 A CN202110946409 A CN 202110946409A CN 113564924 A CN113564924 A CN 113564924A
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- polyester
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- air permeability
- polyester fabric
- boron nitride
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- 239000004744 fabric Substances 0.000 title claims abstract description 93
- 229920000728 polyester Polymers 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 47
- 230000035699 permeability Effects 0.000 title claims abstract description 41
- 239000000835 fiber Substances 0.000 claims abstract description 38
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 21
- 238000010559 graft polymerization reaction Methods 0.000 claims abstract description 20
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 20
- 238000005406 washing Methods 0.000 claims abstract description 19
- 229920003213 poly(N-isopropyl acrylamide) Polymers 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 15
- QNILTEGFHQSKFF-UHFFFAOYSA-N n-propan-2-ylprop-2-enamide Chemical compound CC(C)NC(=O)C=C QNILTEGFHQSKFF-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims abstract description 13
- 230000008021 deposition Effects 0.000 claims abstract description 12
- 230000003197 catalytic effect Effects 0.000 claims abstract description 11
- -1 hydroxyl nano boron nitride Chemical compound 0.000 claims abstract description 11
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 6
- 229920004933 Terylene® Polymers 0.000 claims abstract description 5
- 230000007062 hydrolysis Effects 0.000 claims abstract description 5
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 20
- 229910052582 BN Inorganic materials 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 8
- 239000004753 textile Substances 0.000 claims description 8
- 239000002759 woven fabric Substances 0.000 claims description 8
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 5
- DCUFMVPCXCSVNP-UHFFFAOYSA-N methacrylic anhydride Chemical compound CC(=C)C(=O)OC(=O)C(C)=C DCUFMVPCXCSVNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- 238000005137 deposition process Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 230000001105 regulatory effect Effects 0.000 abstract 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 12
- 238000000151 deposition Methods 0.000 description 12
- 238000009792 diffusion process Methods 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 6
- 238000004321 preservation Methods 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002135 nanosheet Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229920004934 Dacron® Polymers 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000006886 vinylation reaction Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- 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
- D06M14/00—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials
- D06M14/08—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials on to materials of synthetic origin
- D06M14/12—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials on to materials of synthetic origin of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M14/14—Polyesters
-
- 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
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
-
- 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
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/80—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with boron or compounds thereof, e.g. borides
-
- 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
- D06M13/10—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 oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/203—Unsaturated carboxylic acids; Anhydrides, halides or salts thereof
-
- 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
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a finishing method for realizing self-adjustment of air permeability of a polyester fabric, and belongs to the technical field of functional finishing. Firstly, carrying out ester bond hydrolysis pretreatment on the surface of polyester, and grafting vinyl on the surface of the polyester to obtain a modified polyester fabric; then, catalyzing N-isopropyl acrylamide graft polymerization by using ammonium persulfate to form a codeposition layer of poly (N-isopropyl acrylamide) and hydroxyl nano boron nitride on the surfaces of the polyester fibers and the yarns; and finally, washing and drying to obtain the terylene fabric with automatically adjustable air permeability. The method comprises the following specific steps: (1) pretreating polyester fabrics; (2) fiber grafted vinyl; (3) catalytic graft polymerization deposition; (4) and (5) washing and drying. Compared with the traditional finishing method, the method has the advantages that the thermal diffusivity and the air permeability of the fabric can be self-regulated, the finishing effect is durable, and the sample damage is small.
Description
Technical Field
The invention relates to a finishing method for realizing self-adjustment of air permeability of a polyester fabric, and belongs to the technical field of functional finishing.
Background
The air permeability of the textile depends on the raw materials, weaving and dyeing and finishing processes of the fiber products. Generally, the thinner the yarn for fabric is, the lower the warp and weft density is, the lower the grammage of the fabric is, and the better the air permeability of the raw fabric is; the size of the air permeability of the fabric can be adjusted through dyeing and finishing, such as: the calendering treatment can flatten the circular fiber section, so that the intermittent quantity among warp and weft tissue points of the fabric is reduced, and the air permeability of the fabric is reduced; through coating finishing, a continuous interface can be formed on the surface of the fabric, so that the air permeability of the fabric is reduced to a great extent, and even the air permeability of the fabric is reduced to 0.
The garment material has relatively stable air permeability because the specification is relatively determined in the wearing process. On the other hand, consumers often expect that the air permeability of the garment material can be adaptively changed under different wearing environment temperatures. For example, in a hot outdoor environment, the fabric is expected to have good air permeability and meet the requirement of obtaining cool feeling by heat dissipation of a human body; on the contrary, in a low-temperature environment, the fabric is expected to have low air permeability, reduce the heat dissipation of a human body and further play a role in heat preservation. Therefore, the development of the fabric with environmental adaptability has potential market application prospect.
Poly (N-isopropylacrylamide) (PNIPAM) is a polymer with a temperature sensitive effect that shrinks in volume above the phase transition temperature (32 ℃); below the phase transition temperature, the polymer mentions swelling. According to the characteristics of the PNIPMA, a PNIPAM polymer layer can be formed on the surface of the fiber or yarn by an in-situ polymerization deposition method. On the basis, the polymer deposition layer on the surface of the yarn shrinks at high temperature, so that the air permeability of the garment fabric is increased, and the garment fabric is cool; on the contrary, the polymer expansion at low temperature can reduce the intermittent size of the tissue points, and the heat preservation effect is achieved. Meanwhile, if the boron nitride nanosheets with high thermal conductivity coefficients are added into the PNIPAM, aggregation of the boron nitride nanosheets can be promoted when the polymer shrinks, and the surface thermal diffusion performance of the fabric is improved, so that the heat dissipation performance of the fabric is accelerated, and the effect of improving the cool feeling of the clothes is achieved.
Disclosure of Invention
[ problem ] to provide a method for producing a semiconductor device
The technical problem to be solved by the invention is as follows: a finishing method for realizing self-adjustment of air permeability of polyester fabric.
[ technical solution ] A
Aiming at the technical problems, the invention aims to provide a finishing method for realizing self-adjustment of the air permeability of polyester fabric, which can improve the reactivity of the surface of polyester fiber by ester bond hydrolysis and graft vinylation modification of the surface of the polyester fiber; on the basis, through catalytic graft polymerization, a PNIPAM and hydroxyl nano boron nitride deposition layer is formed on the surface of the fiber, so that the polyester fabric has the function of automatically adjusting air permeability along with the change of environmental temperature.
The first purpose of the invention is to provide a finishing method for realizing self-adjustment of the air permeability of a polyester fabric, which comprises the steps of firstly carrying out ester bond hydrolysis pretreatment on the surface of polyester, and grafting vinyl on the surface of the polyester to obtain a modified polyester fabric; then, catalyzing N-isopropyl acrylamide graft polymerization by means of ammonium persulfate to form a PNIPAM and hydroxyl nano boron nitride codeposition layer on the surfaces of the polyester fibers and the yarns; and finally, washing and drying to obtain the terylene fabric with automatically adjustable air permeability.
In one embodiment of the invention, the method comprises the steps of:
(1) pretreating polyester fabrics: carrying out pretreatment on polyester fabric by using caustic soda to hydrolyze macromolecular ester bonds of polyester fibers to generate hydroxyl groups;
(2) fiber grafted vinyl: after the polyester fabric treated in the step (1) is washed, vinyl is grafted;
(3) catalytic graft polymerization deposition: soaking the polyester fabric treated in the step (2) in a mixed solution of N-isopropylacrylamide, nano-hydroxyl boron nitride and ammonium persulfate, and performing catalytic graft polymerization on the surfaces of the fibers and yarns to form a PNIPAM and nano-hydroxyl boron nitride co-deposition layer;
(4) water washing and drying treatment: and (4) washing the polyester fabric treated in the step (3) at room temperature, and drying to obtain the polyester fabric with the air permeability automatically adjusted.
In one embodiment of the invention, the polyester fabric pretreatment process formula and conditions are as follows: 0.5-1.5 g/L of caustic soda, 80-90 ℃ of temperature and 0.5-1 h of time.
In one embodiment of the invention, the fiber graft vinyl process recipe and conditions: 2-5 g/L of methacrylic anhydride, 10-20 ℃, 7-8 of pH and 6-12 hours of time;
in one embodiment of the present invention, the catalytic graft polymerization deposition process recipe and conditions: 5-7.5 g/L of ammonium persulfate, 15-30 g/L of N-isopropylacrylamide and 3-5 g/L of hydroxyl nano boron nitride, wherein the temperature is 60-80 ℃, the pH value is 6.5-8.5, and the time is 0.5-1 h.
In one embodiment of the invention, the water washing and drying process: the water washing temperature is 20-30 ℃, and the time is 5-10 min.
The second purpose of the invention is to provide a terylene fabric with self-adjustable air permeability prepared by the method.
The third purpose of the invention is to provide a textile containing the polyester fabric.
In one embodiment of the present invention, the textile includes any one of a polyester woven fabric, a knitted fabric, a carpet fabric, a garment, a clothing accessory, a home textile, or a special work garment.
The invention has the beneficial effects that:
according to the invention, ester bond hydrolysis pretreatment is carried out on the surface of the polyester, and vinyl is grafted on the surface of the polyester to obtain a modified polyester fabric; then, catalyzing N-isopropyl acrylamide graft polymerization by means of ammonium persulfate to form a PNIPAM and hydroxyl nano boron nitride codeposition layer on the surfaces of the polyester fibers and the yarns; and finally, washing and drying to obtain the terylene fabric with automatically adjustable air permeability. Compared with the traditional finishing method which only adopts the nanometer boron nitride for impregnation or only adopts the PNIPAM for graft polymerization, the method has the following advantages:
(1) the air permeability is self-adjusting. According to the polyester fabric prepared by the method, the volume of the codeposition layer of the PNIPAM and the boron nitride on the surfaces of the fibers and the yarns is shrunk at high temperature, so that the yarn interval is increased, the air permeability of the fabric is increased, and meanwhile, the thermal diffusivity of the fabric is increased due to the reduction of the spacing of boron nitride particles, so that good air permeability and cool feeling are obtained; under the condition of low temperature, the volume expansion of the codeposition layer leads to the reduction of the intermittent quantity among yarns, the air permeability of the fabric is reduced, and meanwhile, the mutual distance between boron nitride particles is increased, so that the thermal resistance of the fabric is increased, and the heat preservation effect of the polyester fabric at low temperature is realized.
(2) The finishing effect is durable. The vinyl-containing polyester fiber is prepared by the invention, the N-isopropyl acrylamide and the vinyl on the surface of the fiber are catalyzed by ammonium persulfate for graft polymerization, and the hydroxyl nano boron nitride is embedded on the surfaces of the fiber and the yarn to form a complete codeposit layer, so that the vinyl-containing polyester fiber has high binding fastness and lasting finishing effect.
(3) The fiber damage is small. The polyester fabric is pretreated by light alkali, the fiber damage is small in the treatment process, and the strength of the polyester fabric is not obviously changed compared with that of an untreated sample after a deposited layer is formed by catalytic graft polymerization.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of better illustrating the invention and is not intended to limit the invention thereto.
The surface thermal diffusion coefficient of the dacron fabric is measured by adopting a laser thermal conductivity tester, the air permeability of the fabric is measured by referring to GB/T5453-.
Example 1
The process and the method of the invention are used for finishing the polyester woven fabric in steps (1) to (4).
(1) Pretreating polyester fabrics: carrying out pretreatment on polyester woven fabric by using caustic soda to hydrolyze ester bonds on the surfaces of macromolecules of polyester fibers to generate hydroxyl groups, wherein the process formula and conditions are as follows: caustic soda 0.5 g/L, temperature 80 deg.C, time 0.5 h.
(2) Fiber grafted vinyl: after the polyester woven fabric treated in the step (1) is washed, vinyl is grafted, and the process formula and conditions are as follows: methacrylic anhydride 2 g/L, temperature 10 ℃, pH 7.5, time 6 h
(3) Catalytic graft polymerization deposition: soaking the polyester woven fabric treated in the step (2) in a mixed solution of N-isopropylacrylamide, boron nitride and ammonium persulfate, and performing graft polymerization on the surfaces of fibers and yarns to form a PNIPAM and boron nitride deposition layer, wherein the process formula and conditions are as follows: 5g/L of ammonium persulfate, 15 g/L of N-isopropylacrylamide, 3 g/L of hydroxyl nano boron nitride, 60 ℃ of temperature, 6.5 of pH and 0.5 h of time.
(4) Water washing and drying treatment: and (4) washing the polyester woven fabric treated in the step (3) with room temperature water, and drying for 5 min at the washing temperature of 20 ℃.
Example 2
The process and the method of the invention are used for finishing the polyester knitted fabric in steps (1) to (4).
(1) Pretreating polyester fabrics: carrying out pretreatment on polyester knitted fabric by using caustic soda to hydrolyze ester bonds on the surface of macromolecules of polyester fibers to generate hydroxyl groups, wherein the process formula and conditions are as follows: 1.5 g/L of caustic soda, the temperature is 90 ℃, and the time is 1 h.
(2) Fiber grafted vinyl: after the polyester knitted fabric treated in the step (1) is washed, vinyl is grafted, and the process formula and conditions are as follows: methacrylic anhydride 5g/L, temperature 20 ℃, pH 8, time 12 h
(3) Catalytic graft polymerization deposition: soaking the polyester knitted fabric treated in the step (2) in a mixed solution of N-isopropylacrylamide, boron nitride and ammonium persulfate, and performing graft polymerization on the surfaces of fibers and yarns to form a PNIPAM and boron nitride deposition layer, wherein the process formula and conditions are as follows: 7.5 g/L of ammonium persulfate, 30 g/L of N-isopropylacrylamide, 5g/L of hydroxyl nano boron nitride, 80 ℃ of temperature, 8.5 of pH and 1 h of time.
(4) Water washing and drying treatment: and (4) washing the polyester knitted fabric treated in the step (3) with room temperature water, and drying for 10 min at the washing temperature of 30 ℃.
Comparative example 1:
the processing in the steps (1) to (4) is not performed in the embodiment 1, and other conditions or parameters are consistent with those in the embodiment 1.
Comparative example 2:
the process of example 1 was not followed by the steps (1) and (2), and the other conditions or parameters were the same as those of example 1.
Comparative example 3:
the process of example 1 was not followed by the step (1), and the other conditions or parameters were the same as those of example 1.
Comparative example 4:
the processing in the steps (1) to (4) in the example 2 is not performed, and other conditions or parameters are consistent with those in the example 2.
Comparative example 5:
the process of example 2 was not conducted through the steps (1) and (2), and the other conditions or parameters were the same as those of example 2.
Comparative example 6:
the process of example 2 was not followed by the step (1), and the other conditions or parameters were the same as those of example 2.
The thermal diffusivity and air permeability of the surface of the polyester fabric at different temperatures (35 ℃ C., 20 ℃ C.) were measured for the polyester fabrics of examples 1 to 2 and comparative examples 1 to 6, and the fabric strength (the breaking strength of the woven fabric and the bursting strength of the knitted fabric) after the balance of the fabric was measured under standard atmospheric conditions was also measured, and the results are shown in Table 1.
TABLE 1
As can be seen from Table 1:
a. the samples modified by the method of the invention (example 1 and example 2) have higher thermal diffusivity at a high temperature of 35 ℃ and smaller thermal diffusivity at 20 ℃, and the difference between the two coefficients is caused by density change of nano boron nitride caused by shrinkage and expansion of a deposition layer on the surface of fibers and yarns in the polyester fabric. Under high temperature, the density of the contained nano boron nitride is increased due to the shrinkage of PNIPMA, and the heat diffusion effect of the surface of the fabric is improved; in terms of air permeability, the fabric air permeability is higher at high temperatures, which is a result of PNIPAM thermal shrinkage and cold expansion, causing intermittent growth of the yarns in the fabric. At low temperature, the air permeability of the fabric is reduced, and the thermal resistance is increased, so that the polyester fabric has a heat preservation effect.
b. The thermal diffusion coefficients of samples (comparative example 1 and comparative example 4) which are not treated at any temperature are smaller at high temperature and low temperature, and the air permeability of the fabric at low temperature is very high, which shows that the surface thermal diffusion performance of the fabric sample at high temperature is not ideal, the heat preservation effect of the fabric at low temperature is poor, and the fabric sample does not have the characteristic of self-regulation of the air permeability.
c. When the polyester fabric is not pretreated and vinyl is grafted on the surface, deposited layers of PNIPAM and boron nitride formed on the surfaces of the fibers and the yarns are less and are not firmly combined, so that the thermal diffusion coefficients of a comparative example 2 and a comparative example 5 are respectively lower than those of an example 1 and an example 2, and the air permeability difference between the high temperature and the low temperature is not obvious, which indicates that the polyester fabric needs to be pretreated and vinyl is grafted so as to be beneficial to the deposition of nano boron nitride and PNIPAM on the surfaces of the fibers and the yarns in subsequent catalysis.
d. When the polyester fabric is not pretreated, the number of hydroxyl groups on the surface of the fiber is small, the number of vinyl groups introduced into the surface of the fiber in subsequent methacrylic anhydride treatment is small, and the high-efficiency catalytic graft polymerization on the surface of the fiber is not facilitated to form a deposition layer, so that the differences of the thermal diffusion coefficient and the air permeability of the sample at different temperatures are not obvious.
It can also be seen from the above data that the strength of the polyester fabrics finished by the method of the present invention (examples 1 and 2) is similar to that of the untreated samples (comparative examples 1 and 4), indicating that no significant fiber damage occurs during the treatment by the method of the present invention.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A finishing method for realizing self-adjustment of air permeability of a polyester fabric is characterized by comprising the following steps of firstly carrying out ester bond hydrolysis pretreatment on the surface of polyester, and grafting vinyl on the surface of the polyester to obtain a modified polyester fabric; then, catalyzing N-isopropylacrylamide graft polymerization by means of ammonium persulfate to form a codeposition layer of poly-isopropylacrylamide and hydroxyl nano boron nitride on the surfaces of the polyester fibers and the yarns; and finally, washing and drying to obtain the terylene fabric with automatically adjustable air permeability.
2. The method according to claim 1, wherein the specific processes and steps are as follows:
(1) pretreating polyester fabrics: carrying out pretreatment on polyester fabric by using caustic soda to hydrolyze macromolecular ester bonds of polyester fibers to generate hydroxyl groups;
(2) fiber grafted vinyl: after the polyester fabric treated in the step (1) is washed, vinyl is grafted;
(3) catalytic graft polymerization deposition: soaking the polyester fabric treated in the step (2) in a mixed solution of N-isopropylacrylamide, nano-hydroxyl boron nitride and ammonium persulfate, and performing graft polymerization on the surfaces of fibers and yarns to form a co-deposition layer of poly (N-isopropylacrylamide) and hydroxyl nano-boron nitride;
(4) water washing and drying treatment: and (4) washing the polyester fabric treated in the step (3) at room temperature, and drying to obtain the polyester fabric with the air permeability automatically adjusted.
3. The method according to any one of claims 1-2, wherein the polyester fabric pretreatment process recipe and conditions are as follows: 0.5-1.5 g/L of caustic soda, 80-90 ℃ of temperature and 0.5-1 h of time.
4. The method of any of claims 1-3, wherein the fiber-grafted vinyl process recipe and conditions: 2-5 g/L of methacrylic anhydride, 10-20 ℃, 7-8 of pH and 6-12 hours of time.
5. The method of any of claims 1-4, wherein the catalytic graft polymerization deposition process recipe and conditions: 5-7.5 g/L of ammonium persulfate, 15-30 g/L of N-isopropylacrylamide and 3-5 g/L of hydroxyl nano boron nitride, wherein the temperature is 60-80 ℃, the pH value is 6.5-8.5, and the time is 0.5-1 h.
6. The method according to any one of claims 1 to 5, wherein the washing and drying treatment process conditions are as follows: the water washing temperature is 20-30 ℃, and the time is 5-10 min.
7. A breathable self-adjusting polyester fabric produced by the method of any one of claims 1 to 6.
8. A textile article comprising the polyester fabric of claim 7.
9. The textile of claim 8, wherein the textile comprises any one of a polyester woven fabric, a knitted fabric, a carpet fabric, a garment accessory, a home textile or a special work garment.
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| CN202110946409.2A CN113564924A (en) | 2021-08-18 | 2021-08-18 | Finishing method for realizing self-adjustment of air permeability of polyester fabric |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875518A (en) * | 2022-06-13 | 2022-08-09 | 江苏惠康特种纤维有限公司 | Antibacterial ES fiber for cool non-woven fabric and preparation method thereof |
| CN115256935A (en) * | 2022-07-27 | 2022-11-01 | 香港理工大学 | Method for improving adhesive property between 3D printing high molecular polymer and textile substrate |
-
2021
- 2021-08-18 CN CN202110946409.2A patent/CN113564924A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875518A (en) * | 2022-06-13 | 2022-08-09 | 江苏惠康特种纤维有限公司 | Antibacterial ES fiber for cool non-woven fabric and preparation method thereof |
| CN114875518B (en) * | 2022-06-13 | 2024-03-29 | 江苏惠康特种纤维有限公司 | Antibacterial ES fiber for cool non-woven fabric and preparation method thereof |
| CN115256935A (en) * | 2022-07-27 | 2022-11-01 | 香港理工大学 | Method for improving adhesive property between 3D printing high molecular polymer and textile substrate |
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