CN109183412B - Polyester fabric water repellent finishing method based on graft copolymerization - Google Patents
Polyester fabric water repellent finishing method based on graft copolymerization Download PDFInfo
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- CN109183412B CN109183412B CN201811066103.2A CN201811066103A CN109183412B CN 109183412 B CN109183412 B CN 109183412B CN 201811066103 A CN201811066103 A CN 201811066103A CN 109183412 B CN109183412 B CN 109183412B
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- polyester
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- water repellent
- terylene
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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
- 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
- D06M14/18—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials using wave energy or particle radiation
- D06M14/26—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials using wave energy or particle radiation on to materials of synthetic origin
- D06M14/30—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials using wave energy or particle radiation on to materials of synthetic origin of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M14/32—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 System
-
- 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
- D06M13/11—Compounds containing epoxy groups or precursors 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
-
- 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
- D06M2200/10—Repellency against liquids
- D06M2200/12—Hydrophobic properties
Abstract
The invention discloses a polyester fabric water repellent finishing method based on graft copolymerization, which is characterized in that alkali pretreatment is carried out on polyester by using caustic soda, so that ester bonds on the surface of fibers are hydrolyzed to generate hydroxyl groups; introducing vinyl on polyester fibers through ring-opening addition reaction of hydroxyl on the polyester and vinyl ethylene oxide; with the help of ultraviolet irradiation and a photoinitiator, the grafting copolymerization of vinyl on the terylene and a fluorine-containing acrylate monomer is promoted, and the water repellent finishing of the terylene fabric is realized. The method comprises the following specific steps: (1) pretreating terylene by an alkaline method; (2) introducing vinyl into terylene; (3) preparing fluorine-containing acrylate emulsion; (4) and (5) performing water repellent finishing on the polyester fabric. Compared with the traditional high-temperature padding baking method, the method has the advantages of higher grafting copolymerization efficiency, low energy consumption in the finishing process and better water repellent finishing effect of the polyester fabric.
Description
Technical Field
The invention relates to a water repellent finishing method of a polyester fabric based on graft copolymerization, and belongs to the technical field of textile dyeing and finishing.
Background
The water repellent textile is widely applied to outdoor and industrial textiles for a long time, and along with the development of science and technology and the improvement of living standard in recent years, the requirements on the fabric for daily wear in autumn and winter and the fabric for household decoration are higher and higher, and a series of functions including water repellent effect are required. The terylene is a common synthetic fiber raw material and is widely applied to fabrics of sports and outdoor clothing; compared with natural cotton fiber, the polyester fabric has stronger fiber strength, smooth hand feeling and excellent shape-preserving effect, so that the polyester fabric is widely applied to the field of home textiles such as curtains, bedding and the like. Although the terylene has strong hydrophobicity, the textile processed by the terylene as the raw material can not meet the requirement of water repellent finishing, and has the problems of low hydrostatic pressure resistance, high capillary effect and the like of the textile. Therefore, in order to expand the application range of the polyester fabric, water repellent finishing is necessary.
At present, the water repellent finishing of polyester fabrics in textile dyeing and finishing processing mostly adopts a fabric after-finishing method, and the method can be divided into non-durable finishing and durable water repellent finishing according to the characteristics of a water repellent agent. The adopted process comprises padding baking, high-temperature bonding or coating finishing and the like, and the finishing agents can react with the polyester fiber or form a film on the surface of the polyester fiber, so that the polyester fiber has better washability. The durable water repellent finishing has higher treatment temperature, and has the defects of easy yellowing of fabrics, poor hand feeling and the like because the fiber strength is damaged in high-temperature baking while the fabric is endowed with the water repellent effect. Therefore, how to improve the water repellency of the polyester fabric and reduce the production energy consumption, the damage to fibers and other defects at the same time by optimizing the water repellent finishing process is the key point of research.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to solve the technical problem of providing a polyester fabric water repellent finishing method based on graft copolymerization, aiming at realizing polyester fabric finishing under the condition of slow reaction, not only obtaining a relatively durable finishing effect, but also reducing the production energy consumption.
The technical scheme is as follows: carrying out polyester alkaline pretreatment by using caustic soda to hydrolyze ester bonds on the surface of the fiber to generate hydroxyl groups; introducing vinyl on polyester fibers through ring-opening addition of hydroxyl on the polyester and epoxy end groups of vinyl ethylene oxide; with the help of ultraviolet irradiation and a photoinitiator, promoting the vinyl on the terylene to generate graft copolymerization with a fluorine-containing acrylate monomer, realizing the water repellent finishing of the terylene fabric, and comprising the following specific processes and steps:
(1) polyester alkaline pretreatment: carrying out pretreatment by using 0.5-2 g/L of caustic soda, wherein the treatment temperature is 90-100 ℃, the treatment time is 20-40 min, and the bath ratio is 1: 10;
(2) introducing vinyl into terylene: adding vinyl ethylene oxide emulsion into the reaction system in the step (1), and promoting the grafting of the polyester fiber with vinyl through ring-opening addition;
the processing process prescription and conditions are as follows: 2-5 g/L of vinyl ethylene oxide, 0.5-5 g/L of emulsifier, 90-100 ℃ of treatment temperature, 20-40 min of treatment time and 1:10 of bath ratio; after the treatment is finished, dehydrating and drying the polyester fabric;
(3) preparing a fluorine-containing acrylate emulsion: emulsifying a fluorine-containing acrylate monomer by using an emulsifier to prepare a fluorine-containing acrylate emulsion;
the processing process prescription and conditions are as follows: 0.25-2.5% of emulsifier and 1-6% of fluorine-containing acrylate monomer, stirring and emulsifying for 0.5-2 h at 20-30 ℃, and adding 0.5-2 g/L of ultraviolet initiator to prepare fluorine-containing acrylate emulsion;
(4) performing water repellent finishing on polyester fabrics: padding the polyester fabric treated in the step (2) into the fluorine-containing acrylate emulsion prepared in the step (3), and promoting graft copolymerization through ultraviolet irradiation;
the processing process prescription and conditions are as follows: the rolling residue rate is 80%, and the ultraviolet irradiation intensity is 50-200 mW/cm2And the irradiation time is 3-12 min.
A polyester fabric water repellent finishing method based on graft copolymerization is disclosed, wherein the emulsifier comprises polyoxyethylene phenol ether sulfate, fatty alcohol polyoxyethylene ether sulfate and aralkyl phenol polyoxyethylene ether sulfate; the fluorine-containing acrylate monomer comprises trifluoroethyl acrylate, trifluoroethyl methacrylate, hexafluorobutyl acrylate and hexafluorobutyl methacrylate.
Has the advantages that:
(1) the energy consumption in the finishing process is low, under the ultraviolet irradiation condition, the initiator is used for promoting the grafted vinyl on the terylene to be grafted and copolymerized with the fluorine-containing acrylate monomer so as to carry out water repellent finishing, thereby avoiding the problems of high energy consumption and easy reduction of fabric strength of the traditional high-temperature padding baking method;
(2) the finishing effect is good, more hydroxyl groups are introduced by means of alkaline pretreatment, and ring-opening addition of the hydroxyl groups and vinyl ethylene oxide is combined, so that more vinyl groups are promoted to be grafted on terylene and become anchor points for subsequent graft copolymerization with hydrophobic monomers, the finishing effect is improved, and the water repellency effect of the fabric is durable.
Detailed Description
The technical scheme is as follows: carrying out polyester alkaline pretreatment by using caustic soda to hydrolyze ester bonds on the surface of the fiber to generate hydroxyl groups; introducing vinyl on polyester fibers through ring-opening addition reaction of hydroxyl on the polyester and vinyl ethylene oxide; with the help of ultraviolet irradiation and a photoinitiator, promoting the vinyl on the terylene and the fluorine-containing acrylate monomer to generate graft copolymerization, realizing the water repellent finishing of the terylene fabric, and the specific embodiment is as follows:
wherein the waterproof performance of the polyester fabric is tested according to GB/T4744-2013, and the result is expressed by the antistatic pressure grade.
Example 1
Adopting terylene fabrics (70 g/m)2) In accordance with the inventionThe method comprises the following steps:
(1) polyester alkaline pretreatment: pretreating with caustic soda 1 g/L at 90 deg.C for 20 min at a bath ratio of 1: 10;
(2) introducing vinyl into terylene: adding vinyl ethylene oxide emulsion into the reaction system in the step (1), and promoting the grafting of the polyester fiber with vinyl through ring-opening addition;
the processing process prescription and conditions are as follows: 2 g/L of vinyl ethylene oxide, 0.5 g/L of polyoxyethylene phenol ether sulfate, the treatment temperature of 90 ℃, the treatment time of 20 min and the bath ratio of 1: 10; after the treatment is finished, dehydrating and drying the polyester fabric;
(3) preparing a fluorine-containing acrylate emulsion: emulsifying trifluoroethyl acrylate with polyoxyethylene phenol ether sulfate to prepare fluorine-containing acrylate emulsion;
the processing process prescription and conditions are as follows: 0.25 percent of polyoxyethylene phenol ether sulfate and 1 percent of trifluoroethyl acrylate are stirred and emulsified for 0.5 hour at the temperature of 20 ℃, and then 0.5 g/L of ultraviolet initiator is added to prepare fluorine-containing acrylate emulsion;
(4) performing water repellent finishing on polyester fabrics: padding the polyester fabric treated in the step (2) into the fluorine-containing acrylate emulsion prepared in the step (3), and promoting graft copolymerization through ultraviolet irradiation;
the processing process prescription and conditions are as follows: the rolling residue rate is 80 percent, and the ultraviolet radiation intensity is 50 mW/cm2And the irradiation time is 5 min.
Sample 1: is not finished
Sample 2: the treatment is carried out without the step (2) and only through the steps (1), (3) and (4)
Sample 3: processing by steps (1), (2), (3) and (4);
after the treatment by the process, respectively measuring the surface wetting contact angle, the fabric hydrostatic pressure resistance level and the fabric breaking strength of the sample 1-3; wherein the surface contact angle of the sample 1 is 0 degree, the antistatic water pressure grade is 1 grade, and the breaking strength is 650N; the surface contact angle of the sample 2 was 110 °, the hydrostatic pressure rating was 2, and the breaking strength was 652N; the surface contact angle of sample 3 was 134 °, the hydrostatic pressure rating was 4, and the breaking strength was 645N.
Example 2
Adopting terylene fabrics (100 g/m)2) The method for finishing the fabric comprises the following process steps:
(1) polyester alkaline pretreatment: pretreating with 2 g/L of caustic soda at 100 deg.C for 40 min at a bath ratio of 1: 10;
(2) introducing vinyl into terylene: adding vinyl ethylene oxide emulsion into the reaction system in the step (1), and promoting the grafting of the polyester fiber with vinyl through ring-opening addition;
the processing process prescription and conditions are as follows: 5 g/L of vinyl ethylene oxide, 5 g/L of aralkyl phenol polyoxyethylene ether sulfate, 100 ℃ of treatment temperature, 40 min of treatment time and 1:10 of bath ratio; after the treatment is finished, dehydrating and drying the polyester fabric;
(3) preparing a fluorine-containing acrylate emulsion: emulsifying hexafluorobutyl acrylate by using aralkyl phenol polyoxyethylene ether sulfate to prepare fluorine-containing acrylate emulsion;
the processing process prescription and conditions are as follows: 2.5 percent of aralkyl phenol polyoxyethylene ether sulfate and 6 percent of hexafluorobutyl acrylate are stirred and emulsified for 2 hours at the temperature of 30 ℃, and then 2 g/L of ultraviolet initiator is added to prepare fluorine-containing acrylate emulsion;
(4) performing water repellent finishing on polyester fabrics: padding the polyester fabric treated in the step (2) into the fluorine-containing acrylate emulsion prepared in the step (3), and promoting graft copolymerization through ultraviolet irradiation;
the processing process prescription and conditions are as follows: the rolling residue rate is 80 percent, and the ultraviolet radiation intensity is 200 mW/cm2And the irradiation time is 12 min.
Sample 4: unfinished polyester fabric
Sample 5: the treatment is carried out without the step (2) and only through the steps (1), (3) and (4)
Sample 6: processing by steps (1), (2), (3) and (4);
after the treatment by the process, respectively measuring the surface wetting contact angle, the fabric hydrostatic pressure resistance grade and the fabric breaking strength of the sample 4-6; wherein the surface contact angle of the sample 4 is 0 degree, the antistatic water pressure grade is 1 grade, and the breaking strength is 720N; the surface contact angle of the sample 5 was 114 °, the hydrostatic pressure rating was 2, and the breaking strength was 712N; the surface contact angle of sample 6 was 150 °, the hydrostatic pressure rating was 4, and the breaking strength was 723N.
Therefore, the water repellent effect of the polyester fabric which is not finished is poor; the sample which is subjected to terylene pretreatment, vinyl monomer grafting and graft copolymerization under the condition of ultraviolet irradiation has the best water repellent effect, and the fabric strength is not obviously changed, which shows that the method and the steps of the invention have better finishing effect when used for terylene water repellent finishing.
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 (2)
1. A terylene fabric water repellent finishing method based on graft copolymerization is characterized in that terylene alkaline pretreatment is carried out by caustic soda, so that ester bonds on the surface of fibers are hydrolyzed to generate hydroxyl groups; introducing vinyl on polyester fibers through ring-opening addition of hydroxyl on the polyester and epoxy end groups of vinyl ethylene oxide; the method for promoting the vinyl on the terylene to generate graft copolymerization with the fluorine-containing acrylate monomer by means of ultraviolet irradiation and a photoinitiator so as to realize the water repellent finishing of the terylene fabric comprises the following specific processes and steps:
(1) polyester alkaline pretreatment: carrying out pretreatment by using 0.5-2 g/L of caustic soda, wherein the treatment temperature is 90-100 ℃, the treatment time is 20-40 min, and the bath ratio is 1: 10;
(2) introducing vinyl into terylene: adding vinyl ethylene oxide emulsion into the reaction system in the step (1), and promoting the grafting of the polyester fiber with vinyl through ring-opening addition;
the processing process prescription and conditions are as follows: 2-5 g/L of vinyl ethylene oxide, 0.5-5 g/L of emulsifier, 90-100 ℃ of treatment temperature, 20-40 min of treatment time and 1:10 of bath ratio; after the treatment is finished, dehydrating and drying the polyester fabric;
(3) preparing a fluorine-containing acrylate emulsion: emulsifying a fluorine-containing acrylate monomer by using an emulsifier to prepare a fluorine-containing acrylate emulsion;
the processing process prescription and conditions are as follows: 0.25-2.5% of emulsifier and 1-6% of fluorine-containing acrylate monomer, stirring and emulsifying for 0.5-2 h at 20-30 ℃, and adding 0.5-2 g/L of ultraviolet initiator to prepare fluorine-containing acrylate emulsion;
(4) performing water repellent finishing on polyester fabrics: padding the polyester fabric treated in the step (2) into the fluorine-containing acrylate emulsion prepared in the step (3), and promoting graft copolymerization through ultraviolet irradiation;
the processing process prescription and conditions are as follows: the rolling residue rate is 80%, and the ultraviolet irradiation intensity is 50-200 mW/cm2And the irradiation time is 3-12 min.
2. The method of claim 1, wherein: the emulsifier comprises polyoxyethylene phenol ether sulfate, fatty alcohol-polyoxyethylene ether sulfate and aralkyl phenol polyoxyethylene ether sulfate; the fluorine-containing acrylate monomer comprises trifluoroethyl acrylate, trifluoroethyl methacrylate, hexafluorobutyl acrylate and hexafluorobutyl methacrylate.
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| CN201811066103.2A CN109183412B (en) | 2018-09-13 | 2018-09-13 | Polyester fabric water repellent finishing method based on graft copolymerization |
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| CN112647291A (en) * | 2020-12-21 | 2021-04-13 | 浙江彩蝶实业股份有限公司 | Method for performing terylene water repellent finishing through graft polymerization |
| CN112853754A (en) * | 2021-01-13 | 2021-05-28 | 扬州纪元纺织有限公司 | Water-repellent anti-ultraviolet polyester and preparation method thereof |
| CN114293384B (en) * | 2021-09-23 | 2023-11-21 | 海宁德易遮阳科技有限公司 | Processing method for preparing formaldehyde-removing sunshade material by grafting polymerization method |
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| JP2008115492A (en) * | 2006-11-02 | 2008-05-22 | Mitsubishi Rayon Co Ltd | Functional polyester-based fabric having excellent durability, and method for producing the same |
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Denomination of invention: A water repellent finishing method for polyester fabrics based on graft copolymerization Effective date of registration: 20230310 Granted publication date: 20210420 Pledgee: Jiangsu Changshu Rural Commercial Bank Co.,Ltd. Hai'an sub branch Pledgor: JIANGSU DATONG BAOFU TEXTILE TECHNOLOGY CO.,LTD. Registration number: Y2023980034320 |
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