CN103774448A - Method for flame-proof treatment of textiles based on light curing method - Google Patents
Method for flame-proof treatment of textiles based on light curing method Download PDFInfo
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Abstract
The invention discloses a method for flame-proof treatment of textiles based on a light curing method, belongs to the technical field of treatment and processing of textiles, and aims to overcome the defects that in the traditional after treatment and processing process, the curing temperature is high, the energy consumption in production is large, and the processing efficiency is low, so as to realize flame-proof treatment of the textiles under the light curing conditions. The main technology comprises the steps as follows: 1, firstly, synthesizing a urethane acrylate prepolymer, specifically, performing a reaction on isocyanate and hydroxyl acrylate at an equivalent molar ratio, and adding a polyether glycol long chain for further reaction to obtain the prepolymer; 2, blending an inorganic flame retardant with a light-cured resin system prepared from the urethane acrylate prepolymer, a reactive diluent, a photoinitiator and a solvent, and irradiating the textiles subjected to coating and roll compacting for a certain time under the UV-light, so as to complete curing of resin on the surfaces of textiles. According to the invention, the processed textiles are improved in flame-proof performance and less reduced in strength. Compared with a traditional thermal curing chemical treatment method, the method has the advantage that flame-proof treatment of the textiles based on the light curing method saves energy, is efficient, and has a short process.
Description
Technical field
The present invention relates to a kind of Fire-proof Finishing Agents for Textile method for sorting based on photocuring method, particularly a kind of high-energy ultraviolet light that utilizes has the polyurethane acrylate prepolymer of antiflaming finishing agent to be solidificated in fabric face blend, give the method for sorting of Fire-proof Finishing Agents for Textile, belong to textile finishing processing technique field.
Background technology
Along with decorative textile product consumption figure increases rapidly, the fire being caused by textiles constantly increases in recent years, wherein on fire as one of the main reasons with cloth take bedding, home decoration.After the textiles of burning contacts with human body, gently cause skin burn, heavy threat to life.In textile combustion, also entail dangers to people's health of a large amount of pernicious gases that discharge, comprises as the multiple gases such as carbon monoxide, carbon dioxide, hydrogen cyanide and aldehydes all can cause people to be choked to death and dying.Therefore, when fire preventing occurs, how to improve Fire-proof Finishing Agents for Textile performance, alleviate the loss that fire causes, day by day become the important topic of finishing functions of textile fabrics working research.
Flame-proof treatment is to reduce the combustibility of fibrous material in flame by antiflaming finishing agent, delays the rate of fire travel, or textiles can be very fast from putting out after flame is removed.It is divided into fire retardant by element kind: halogen system, phosphorus system, halogen-phosphorus system, nitrogen system, silicon system, high purity alumina-magnesia etc.; Be divided into inorganic combustion inhibitor, organic fire-retardant, high molecular weight flame retardant etc. by chemical constitution; By fire retardant be divided into addition type and reactive flame retardant by fire proofing relation.In different flame retardant, inorganic combustion inhibitor has cheap, and wide material sources are nontoxic, corrosion-free, does not cause the advantages such as secondary pollution when burning, in the flame retardant textiles of plastics macromolecular material and the requirement of non-washability arranges, is used widely.
Traditional textile flame-proof treatment bakes under condition and carries out at high temperature, and finishing agent is by anchoring at fiber surface with fiber-reactive or by means of binder, and in production process, energy consumption is large, and efficiency is low.Photocuring technology is-process technology of clean, environmental protection, there is efficient, energy-conservation and oligosaprobic advantage.In recent years, both at home and abroad in hardening with radiation technique and application project, the research aspect combining increases increasingly, and photocuring technology also receives publicity in the application of field of textiles.The principle of photocuring is to utilize high-octane ultraviolet light that carbon-carbon double bond in unsaturated-resin is ruptured, and produces free radical and then causes resin solidification.Both there are some researches show, the technology based on ultraviolet light polymerization and research and development achievement have potential advantages at after-finishing of textile products manufacture field, and for textile finishing processing provides a kind of new selection, the efficient functionalization of textiles that can realize based on this arranges processing.Therefore, if the structure with anti-flaming function is incorporated in polyurethane acrylate prepolymer, maybe will have finishing agent and the polyurethane acrylate prepolymer blend of anti-flaming function, bonded fabric coating and roll compacting arrange, and can improve the fire resistance of textiles.
The present invention, with inorganic combustion inhibitor and polyurethane acrylate prepolymer blend, is aided with reactive diluent, light trigger etc. and prepares light-cured resin system, and fabric carries out respectively photocuring processing after coating and roll compacting again, and Fire-proof Finishing Agents for Textile finishing effect improves.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of efficient, energy-conservation Fire-proof Finishing Agents for Textile method for sorting.Have compared with high flame retardant through the textiles of this method processing, solved the technical problem that during traditional chemical method arranges, energy consumption is high, working (machining) efficiency is low, improved product quality.
For solving the problems of the technologies described above, the present invention is by inorganic combustion inhibitor and the light-cured resin system blend take polyurethane acrylate prepolymer as main raw material, and coating and roll compacting, at fabric face, make its polymerization by means of ultraviolet light, have improved Fire-proof Finishing Agents for Textile.
Concrete technology is as follows:
(1) polyurethane acrylate prepolymer preparation:
1. isocyanates is reacted to 0.1～2.0%, 40～80 ℃ of 2～12 hours lower reaction time of condition that catalyst amount is inventory under catalyst condition with crylic acid hydroxy ester;
2. in above-mentioned reaction system, add polyether Glycols long-chain, in 40～80 ℃ of 2～12 hours lower reaction time of condition, making two end groups is the polyurethane acrylate prepolymer of two keys.
(2) fire retardant and the blend of light-cured resin system
By inorganic combustion inhibitor and the blend of light-cured resin system, wherein amount of flame-retardant agent is 2%～20%, performed polymer content is 20%～50%, reactive diluent content is 0～20%, solvent load is 20%～40%, light trigger 1%～5%; Fully stir evenly rear coating and roll compacting at fabric face.
(3) photocuring processing
Fabric irradiation under high-energy uviol lamp after coating, makes resin system at fabric face generation polymerization curing reaction, and uviol lamp intensity is 2000W left and right, exposure time 2～20s.
A kind of based on photocuring method Fire-proof Finishing Agents for Textile method for sorting, during polyurethane acrylate prepolymer is synthetic, isocyanates used comprises aromatic isocyanate, aliphatic isocyanates etc., and crylic acid hydroxy ester used can comprise multiple crylic acid hydroxy ester; In light-cured resin system, light trigger comprises the free radical photo-initiations such as all kinds of carbonyls classes, azo-compound; In light-cured resin system, reactive diluent can be selected the low molecule acrylate of different structure, and solvent can be selected the small molecular organic solvents such as ethyl acetate; Comprise magnesium hydroxide, aluminium hydroxide etc. with the inorganic combustion inhibitor of light-cured resin blend.
Useful consequence of the present invention
The present invention utilizes photocuring method, makes polyurethane acrylate prepolymer embedding inorganic combustion inhibitor anchor at textile surface, reaches the object that improves Fire-proof Finishing Agents for Textile performance, bake method with traditional heat compared with, the present invention has the following advantages:
(1) power consumption of polymer processing is low, and photocuring power consumption of polymer processing is only 20% of traditional heat cure;
(2) reaction speed is fast, and light-cured resin reaction speed exceedes traditional heat and bakes the more than 10 times of reaction;
(3) environmentally friendly, photocuring performed polymer and suitable reactive diluent are used in combination, and can reduce solvent consumption in reaction, slow down atmosphere pollution and to harm;
(4) base material wide adaptability, in photocuring reaction, performed polymer used can be coated with and the textile surface of roll compacting in different material, different tissues structure, all can obtain the flame retardant effect of certain washability.
The specific embodiment
Chemical & blended fabric first carries out coating and roll compacting with magnesium hydroxide and polyurethane acrylate prepolymer resin system, then carries out photocuring processing, to improve Fire-proof Finishing Agents for Textile.Specific embodiment is as follows:
Implement 1: this implements selected chemical & blended fabric is polyester pongee.
(1) polyurethane acrylate prepolymer preparation: equivalent TDI is reacted with HEA, and dibutyl tin laurate consumption 0.2% adds polyether Glycols long-chain after 60 ℃ of 4 hours reaction time, continues reaction 2 hours.
(2) light-cured resin of anti-flaming function coating and roll compacting: in light-cured resin system, performed polymer content is 30%, TPGDA 25%, ethyl acetate consumption be 30%, light trigger consumption 1%, magnesium hydroxide 14%, after stirring evenly in cloth cover coating and roll compacting.
(3) photocuring processing: fabric exposure time 5s under uviol lamp intensity 2000W after coating.
After photocuring is processed, polyester pongee fabric limited oxygen index is 26.5%, and compared with blank sample, fabric ultimate strength declines and is less than 5%.
Implement 2: this implements selected chemical & blended fabric is Nylon Taffeta.
(1) polyurethane acrylate prepolymer preparation: equivalent TDI is reacted with HEA, and dibutyl tin laurate consumption 0.6% adds polyether Glycols long-chain after 60 ℃ of 6 hours reaction time, continues reaction 4 hours.
(2) light-cured resin of anti-flaming function coating and roll compacting: in light-cured resin system, performed polymer content is 30%, TPGDA 20%, ethyl acetate consumption be 36%, light trigger consumption 2%, magnesium hydroxide 12%, after stirring evenly in cloth cover coating and roll compacting.
(3) photocuring processing: fabric exposure time 6s under uviol lamp intensity 2000W after coating.
After photocuring is processed, Nylon Taffeta fabric and limited oxygen index are 27.0%, and compared with blank sample, fabric ultimate strength declines and is less than 10%.
Claims (6)
1. a photocuring method Fire-proof Finishing Agents for Textile method for sorting, is characterized in that utilizing high-energy ultraviolet light that the polyurethane acrylate prepolymer that is embedded with inorganic combustion inhibitor is solidificated in to fabric face, gives the method for sorting of Fire-proof Finishing Agents for Textile.
2. method according to claim 1, is characterized in that concrete steps are as follows:
(1) polyurethane acrylate prepolymer preparation:
1. isocyanates is reacted to 0.1～2.0%, 40～80 ℃ of 2～12 hours lower reaction time of condition that catalyst amount is inventory under catalyst condition with crylic acid hydroxy ester;
2. in above-mentioned reaction system, add polyether Glycols long-chain, in 40～80 ℃ of 2～12 hours lower reaction time of condition, making two end groups is the polyurethane acrylate prepolymer of two keys.
(2) fire retardant and the blend of light-cured resin system
By inorganic combustion inhibitor and the blend of light-cured resin system, wherein amount of flame-retardant agent is 2%～20%, performed polymer content is 20%～50%, reactive diluent content is 0～20%, solvent load is 20%～40%, light trigger 1%～5%; Fully stir evenly rear coating and roll compacting at fabric face.
(3) photocuring processing
Fabric irradiation under high-energy uviol lamp after coating, makes resin system occur to solidify, and uviol lamp intensity is 2000W left and right, exposure time 2～20s.
3. method according to claim 2, it is characterized in that described polyurethane acrylate prepolymer synthetic in isocyanates used comprise aromatic isocyanate, aliphatic isocyanates etc., crylic acid hydroxy ester used can comprise multiple crylic acid hydroxy ester.
4. method according to claim 2, is characterized in that in described light-cured resin system, light trigger comprises the free radical photo-initiations such as all kinds of carbonyls classes, azo-compound.
5. method according to claim 2, is characterized in that reactive diluent in light-cured resin system can select the low molecule acrylate of different structure, and solvent can be selected the small molecular organic solvents such as ethyl acetate.
6. method according to claim 2, is characterized in that comprising magnesium hydroxide, aluminium hydroxide etc. with the inorganic combustion inhibitor of light-cured resin blend.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109825967A (en) * | 2019-02-25 | 2019-05-31 | 浙江久大纺织科技有限公司 | A kind of preparation method of flame retardant type yarn |
| FR3086289A1 (en) * | 2018-09-25 | 2020-03-27 | Clipso Productions | PHOTORETICULABLE COMPOSITIONS FOR TEXTILES |
| CN112323157A (en) * | 2020-10-20 | 2021-02-05 | 江阴市华宏化纤有限公司 | Preparation method of polyester chemical fiber flame retardant |
| CN112411172A (en) * | 2020-11-24 | 2021-02-26 | 苏州浩纳新材料科技有限公司 | Cloth with infrared heating function and preparation method thereof |
| CN114808469A (en) * | 2021-12-30 | 2022-07-29 | 南京大学 | Method for fixing heparin on polyester fabric artificial blood vessel by using ultraviolet curing method and application |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR3086289A1 (en) * | 2018-09-25 | 2020-03-27 | Clipso Productions | PHOTORETICULABLE COMPOSITIONS FOR TEXTILES |
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| CN109825967A (en) * | 2019-02-25 | 2019-05-31 | 浙江久大纺织科技有限公司 | A kind of preparation method of flame retardant type yarn |
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| CN112411172A (en) * | 2020-11-24 | 2021-02-26 | 苏州浩纳新材料科技有限公司 | Cloth with infrared heating function and preparation method thereof |
| CN112411172B (en) * | 2020-11-24 | 2022-03-22 | 苏州浩纳新材料科技有限公司 | Cloth with infrared heating function and preparation method thereof |
| WO2022109896A1 (en) * | 2020-11-24 | 2022-06-02 | 苏州浩纳新材料科技有限公司 | Fabric having infrared heating function and preparation method therefor |
| CN114808469A (en) * | 2021-12-30 | 2022-07-29 | 南京大学 | Method for fixing heparin on polyester fabric artificial blood vessel by using ultraviolet curing method and application |
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Application publication date: 20140507 |