CN104047180A - Hyperbranched waterborne polyurethane/organophosphorus soft segment flame-retardant modified waterborne polyurethane coating agent and preparation method of coating agent - Google Patents
Hyperbranched waterborne polyurethane/organophosphorus soft segment flame-retardant modified waterborne polyurethane coating agent and preparation method of coating agent Download PDFInfo
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Abstract
The invention relates to a hyperbranched waterborne polyurethane/organophosphorus soft segment flame-retardant modified waterborne polyurethane coating agent and a preparation method of the coating agent, belonging to the technical field of textile chemical engineering. By virtue of the preparation method of the coating agent, a blended emulsion is prepared by using a hyperbranched polyurethane emulsion and organophosphorus modified waterborne polyurethane; the fluidity and the mechanical property of the organophosphorus modified waterborne polyurethane can be improved by using the waterborne hyperbranched polyurethane; the prepared blended emulsion is taken as a fabric coating agent, so that the fabric is good in flame retardant property and hydrostatic pressure resistance; the stability of the existing organophosphorus soft segment flame-retardant modified waterborne polyurethane coating agent is improved; the viscosity is reduced; the solid content is increased; the mechanical property is improved.
Description
Technical field
The present invention relates to soft section of flame-retardant modified Aqueous Polyurethane Coating Agent of a kind of super branched polyurethane/organophosphor and preparation method thereof, belong to technical field of textile chemical engineering.
Background technology
Along with improving constantly that people require Fire-proof Finishing Agents for Textile, flame-retardant modified aqueous polyurethane has become an important kind of functional form aqueous polyurethane.Reaction-type flame-retarding modified aqueous polyurethane has the advantages such as coating is transparent, fire retardant addition is little, water-fastness, difficult migration.Dissaving polymer is the large molecule that a class has highly branched structure, because it contains a large amount of outside functional groups, and without features such as winding, amorphisms, aqueous hyperbranched polyurethane can improve aqueous polyurethane emulsion mobility and mechanical property, being applied in extinguishing waterborn polyurethane is one of aqueous hyperbranched polyurethane developing direction, and the preparation of aqueous hyperbranched polyurethane/flame-retardant modified Aqueous Polyurethane Coating Agent and properties research are just had to positive realistic meaning.
Patent CN103590254A discloses soft section of flame-retardant modified Aqueous Polyurethane Coating Agent of organophosphor and preparation method thereof for a kind of terylene, the hydroxyl that activity hydrogen is contained at the flame-retardant modified polyalcohol of the organophosphor two ends of this invention, can partly replace polyalcohol and isocyanate reaction and generate carbamate, in this polyurethane, in macromolecular chain, introduce the fire-retardant intermediate of organophosphor, formed environmental protection, Halogen, the large molecule of low-poison and combustion-resisting, be applied on dacron, wearability impact on dacron is less, dacron after applying coating agent has higher fire resistance, under high temperature, halogen discharges, nontoxic, low cigarette.Patent CN102220700A has announced flame-retardant modified Waterborne Polyurethane Fabric Coatings of a kind of environment friendly non-halogen organophosphor and preparation method thereof, has environmental protection, nontoxic, low cigarette, and flame retardant effect outstanding feature; Adopt this extinguishing waterborn polyurethane textile coating agent to carry out after rear arrangement fabric, coating is transparent, and fabric look diminishes, tack-free, does not affect fabric feeling, and resistance to soaping simultaneously can be by the B1 level in GB/T5455-1997 textile combustion performance test normal beam technique.Patent CN101381445 has announced a kind of environment friendly non-halogen reacting fire-retardant aqueous polyurethane and preparation method thereof, adopts this aqueous polyurethane to carry out after rear arrangement fabric, and coating is transparent, and tack-free, does not affect fabric feeling, and flame retardant effect is remarkable.
But generally the anti-flaming function modification majority of aqueous polyurethane is accompanied by one of problem that the flame-retardant modified aqueous polyurethane of being declined to become of aqueous polyurethane emulsion and coating performance is difficult to overcome.
Patent CN102924689B has announced a kind of hyperbranched aqueous polyurethane (SWHBPU) emulsion and preparation method thereof.That this emulsion has is stable, viscosity is low, the simple advantage of addition manner, solves hyperbranched aqueous polyurethane stability of emulsion poor, and the problem that viscosity is large, can be used for preparing high solid content aqueous polyurethane emulsion.This hyperbranched aqueous polyurethane coating is when TENSILE STRENGTH improves, and elongation at break also obtains lifting, has solved the problem that when hyperbranched aqueous polyurethane TENSILE STRENGTH improves, elongation at break declines, and can be used for preparing high-performance water-based polyurethane coating.
Patent CN102851987 has announced a kind of terminal hydroxy group sealing hyperbranched aqueous polyurethane (AWHBPU) emulsion and preparation method thereof.Thereby the crosslinked problem of avoiding terminal hydroxy group to bring.That this emulsion has is stable, viscosity is low, the simple advantage of addition manner, solves hyperbranched aqueous polyurethane stability of emulsion poor, and the problem that viscosity is large, can be used for preparing high solid content aqueous polyurethane emulsion.
Summary of the invention
The present invention seeks to stability in order to improve soft section of flame-retardant modified Aqueous Polyurethane Coating Agent of existing organophosphor, reduce viscosity, improve solid content, improve mechanical property, soft section of flame-retardant modified Aqueous Polyurethane Coating Agent of a kind of hyperbranched aqueous polyurethane/organophosphor and preparation method thereof is provided.
The present invention seeks to be achieved through the following technical solutions.
Soft section of flame-retardant modified Aqueous Polyurethane Coating Agent of hyperbranched aqueous polyurethane/organophosphor, comprising:
A preparation method for soft section of flame-retardant modified Aqueous Polyurethane Coating Agent of hyperbranched aqueous polyurethane/organophosphor, concrete preparation process is as follows:
Step 1, oligomer polyol, vulcabond and emulsifying agent are put into container; Pass into inert gas; In temperature, be to react 1～2h under the condition of 80～100 ℃, add fire retardant, while approaching theoretical value to the content of the NCO of one of product, stop reaction;
Step 2, be then cooled to 30～45 ℃, then add hyperbranched aqueous polyurethane; Obtain mixture A;
Step 3, in the mixture A of step 3 gained, add neutralizer; The performed polymer obtaining after reacting completely;
Step 4, to being added with the performed polymer of pouring step 3 gained in the container of deionized water into, use high speed shear dispersion emulsifying machine emulsification 5～15min simultaneously, after emulsification, revolve and steam except desolventizing, obtain soft section of flame-retardant modified Aqueous Polyurethane Coating Agent of hyperbranched aqueous polyurethane/organophosphor (FWPU).
In step 2, solvent can also be added to regulate the viscosity of mixture A.
Fire retardant phosphorus contained multicomponent alcohols halogen-free flame retardants described in described step 1, preferential ExolitOP550.
Oligomer polyol described in described step 1 is polyester polyol, preferably polypropylene glycol.
Vulcabond described in described step 1 is toluene di-isocyanate(TDI) TDI, isophorone diisocyanate IPDI, methyl diphenylene diisocyanate MDI, hexamethylene diisocyanate HDI, 2, a kind of in 6 one vulcabond methyl caproate LDI, is preferably vulcabond and is selected from toluene di-isocyanate(TDI) TDI, isophorone diisocyanate IPDI.
Emulsifying agent described in described step 1 is dihydromethyl propionic acid (DMPA).
Reaction temperature described in described step 1 is at 80～100 ℃, preferably 90 ℃.
Hyperbranched aqueous polyurethane described in described step 2 is a kind of of SWHBPU or AWHBPU or two kinds of mixtures.
Temperature described in described step 2 is 30～45 ℃, preferably 45 ℃.
Described solvent is the one or more mixture in butanone, acetone, ethyl acetate, oxolane, toluene, ethyl acetate.
Neutralizer described in described step 3 is selected from one or more the mixture in triethylamine, tri-n-butylamine, NaOH, potassium hydroxide, calcium hydroxide, preferably triethylamine.
The neutralization reaction time described in described step 3 is 7～15min, preferably 10min.
Beneficial effect
1, soft section of flame-retardant modified Aqueous Polyurethane Coating Agent of a kind of super branched polyurethane/organophosphor of the present invention compared with other extinguishing waterborn polyurethanes, and coating agent prepared by the present invention has good fire resistance, and oxygen index (OI) can reach 32.3%; And owing to adding super branched polyurethane emulsion, make blend aqueous polyurethane emulsion viscosity reduced viscosity, thus solid content improved, and the TENSILE STRENGTH of coating agent can reach 5.3MPa, and elongation at break can be up to 812%.This coating agent is applied to textile coating agent, and coated fabric, except having good fire resistance, also has good resistance to hydrostatic pressure simultaneously, resistance to hydrostatic pressure is up to 21.3KPa, after soaping, also can keep good fire resistance, before and after soaping, all reach the B1 level in normal beam technique.
2, soft section of flame-retardant modified Aqueous Polyurethane Coating Agent of a kind of super branched polyurethane/organophosphor of the present invention and preparation method thereof, utilize aqueous hyperbranched polyurethane can improve the features such as aqueous polyurethane emulsion mobility and mechanical property, by itself and extinguishing waterborn polyurethane blend, prepare good stability, viscosity is low, solid content is high, the Aqueous Polyurethane Coating Agent of good mechanical properties, with after its coated fabric, except having good fire resistance, also there is resistance to hydrostatic pressure performance good, the resistance to advantage such as soap.This preparation method simply, easily implements.
The specific embodiment
Below in conjunction with embodiment, the present invention will be further described.
The preparation method of AWHBPU and SWHBPU is as follows:
(1) WHBPU's is synthetic
1. dihydromethyl propionic acid 1: 4 in mass ratio～5 is dissolved in DMF (DMF), then this mixed liquor is added drop-wise in the isophorone diisocyanate of 50～80 ℃, reaction 5～15h;
2. above-mentioned reacting liquid temperature is down to-25～0 ℃, adds diethanol amine (DEOA), reaction 2～6h;
3. above-mentioned reacting liquid temperature is raised to 80～110 ℃, and according to accounting for gross mass, be that 0.1～5% proportionate relationship is added drop-wise in this reaction system by dibutyl tin laurate or stannous octoate, continue reaction 1～5h, obtain WHBPU solution, decompression distillation sloughs solvent, after dry required WHBPU.
(2) AWHBPU's is synthetic
The WHBPU that (1) is obtained mixes with end-capping reagent, the mol ratio of WHBPU and end-capping reagent is 1:0.8～2, then catalyst drops is added in reaction system, catalyst accounts for and adds 0.5～5% of rear gross mass, again above-mentioned mixed liquor is joined to 4～5 times in the pyridine of mixed liquor quality, at 50～120 ℃, react 0.5～5h, obtain AWHBPU crude product, decompression distillation sloughs solvent, after dry required AWHBPU.
Wherein said end-capping reagent is a kind of in formic acid, acetic acid, acetic anhydride;
Wherein said catalyst is the concentrated sulfuric acid or p-methyl benzenesulfonic acid.
(3) SWHBPU's is synthetic
The WHBPU that (1) is obtained mixes with end-capping reagent, hydroxyl in WHBPU and the mol ratio of end-capping reagent are 1:1～2, then catalyst A is added drop-wise in reaction system, catalyst A accounts for and adds 0.5～5% of rear gross mass, again above-mentioned mixed liquor is joined to 4～5 times in the pyridine of mixed liquor quality, at 80～120 ℃, react 2～6h, obtain SWHBPU crude product, decompression distillation sloughs solvent, after dry required SWHBPU;
Wherein said end-capping reagent is a kind of in stearic acid, palmitic acid, myristic acid, laurate, oleic acid, linoleic acid;
Wherein said catalyst A is the concentrated sulfuric acid or p-methyl benzenesulfonic acid.
Embodiment 1
Agitator is being housed, and reflux condensing tube, adds 30gExolitOP550 in the container of thermometer,, 20g gathers 1,4 butanediols, 30gHDI and 1gDMPA, in 80 ℃ at N
2the lower reaction 4h of protection; React and to NCO content, approach theoretical value and be cooled to 45 ℃, add the SWHBPU of 15g, by 10ml acetone regulation system viscosity; Then add 4g triethylamine neutralization reaction 10min, obtain performed polymer; In container, add deionized water, then slowly add performed polymer, use high speed shear dispersion emulsifying machine emulsification 10min simultaneously, after emulsification, revolve and steam except desolventizing, obtain FWPU.
Embodiment 2
Agitator is being housed, and reflux condensing tube, adds 15gExolitOP550 in the container of thermometer, 32g polyethylene glycol, and 38gMDI and 2gDMPA react 2h in 90 ℃ under N2 protection; React and to NCO content, approach theoretical value and be cooled to 30 ℃, add the SWHBPU of 10g, by 10ml toluene regulation system viscosity; Then add 2g NaOH neutralization reaction 15min, obtain performed polymer; In container, add deionized water, then slowly add performed polymer, use high speed shear dispersion emulsifying machine emulsification 15min simultaneously, after emulsification, revolve and steam except desolventizing, obtain FWPU.
Embodiment 3
Agitator is being housed, and reflux condensing tube, adds 10gExolitOP550 in the container of thermometer, 40g polypropylene glycol, and 35gIPDI and 2gDMPA react 1h in 100 ℃ under N2 protection; React and to NCO content, approach theoretical value and be cooled to 35 ℃, add the SWHBPU of 10g, by 30ml oxolane regulation system viscosity; Then add 3g tri-n-butylamine neutralization reaction 7min, obtain performed polymer; In container, add deionized water, then slowly add performed polymer, use high speed shear dispersion emulsifying machine emulsification 5min simultaneously, after emulsification, revolve and steam except desolventizing, obtain FWPU.
Embodiment 4
Agitator is being housed, and reflux condensing tube, adds 5gExolitOP935 in the container of thermometer, 50g polypropylene glycol, and 32gLDI and 1gDMPA react 3h in 80 ℃ under N2 protection; React and to NCO content, approach theoretical value and be cooled to 40 ℃, add the SWHBPU of 11g, by 5ml butanone regulation system viscosity; Then add 2g calcium hydroxide neutralization reaction 15min, obtain performed polymer; In container, add deionized water, then slowly add performed polymer, use high speed shear dispersion emulsifying machine emulsification 7min simultaneously, after emulsification, revolve and steam except desolventizing, obtain FWPU.
Embodiment 5
Agitator is being housed, and reflux condensing tube, adds 15gExolitOP550 in the container of thermometer, 16g polyethylene glycol, and 45gTDI and 4gDMPA react 3h in 85 ℃ under N2 protection; React and to NCO content, approach theoretical value and be cooled to 45 ℃, add the SWHBPU of 18g, by 20ml acetic acid second regulation system viscosity; Then add 2g triethylamine neutralization reaction 10min, obtain performed polymer; In container, add deionized water, then slowly add performed polymer, use high speed shear dispersion emulsifying machine emulsification 8min simultaneously, after emulsification, revolve and steam except desolventizing, obtain FWPU.
Embodiment 6
Agitator is being housed, and reflux condensing tube, adds 20gExolitOP550 in the container of thermometer, 16g polypropylene glycol, and 35gIPDI and 3gDMPA react 4h in 90 ℃ under N2 protection; React and to NCO content, approach theoretical value and be cooled to 45 ℃, add the SWHBPU of 25g; Then add 2g potassium hydroxide neutralization reaction 12min, obtain performed polymer; In container, add deionized water, then slowly add performed polymer, use high speed shear dispersion emulsifying machine emulsification 10min simultaneously, after emulsification, revolve and steam except desolventizing, obtain FWPU.
Embodiment 7
Agitator is being housed, and reflux condensing tube, adds 5gExolitOP935 in the container of thermometer, 50g polypropylene glycol, and 32gLDI and 1gDMPA react 3h in 80 ℃ under N2 protection; React and to NCO content, approach theoretical value and be cooled to 40 ℃, add the AWHBPU of 11g, by 5ml butanone regulation system viscosity; Then add 1g calcium hydroxide and 1g potassium hydroxide neutralization reaction 15min, obtain performed polymer; In container, add deionized water, then slowly add performed polymer, use high speed shear dispersion emulsifying machine emulsification 7min simultaneously, after emulsification, revolve and steam except desolventizing, obtain FWPU.
Embodiment 8
Agitator is being housed, and reflux condensing tube, adds 15gExolitOP550 in the container of thermometer, 16g polyethylene glycol, and 45gTDI and 4gDMPA react 3h in 85 ℃ under N2 protection; React and to NCO content, approach theoretical value and be cooled to 45 ℃, add the AWHBPU of 18g, by 20ml acetic acid second regulation system viscosity; Then add 2g triethylamine neutralization reaction 10min, obtain performed polymer; In container, add deionized water, then slowly add performed polymer, use high speed shear dispersion emulsifying machine emulsification 10min simultaneously, after emulsification, revolve and steam except desolventizing, obtain FWPU.
Embodiment 9
Agitator is being housed, and reflux condensing tube, adds 20gExolitOP550 in the container of thermometer, 16g polypropylene glycol, and 36gIPDI and 3gDMPA react 4h in 90 ℃ under N2 protection; React and to NCO content, approach theoretical value and be cooled to 45 ℃, add the AWHBPU of 22g; Then add 3g potassium hydroxide neutralization reaction 12min, obtain performed polymer; In container, add deionized water, then slowly add performed polymer, use high speed shear dispersion emulsifying machine emulsification 10min simultaneously, after emulsification, revolve and steam except desolventizing, obtain FWPU.
The FWPU of embodiment 1 to embodiment 9 gained is prepared to film forming, coated fabric;
The preparation of membrane sample: by AFWPU emulsion casting film-forming in mould, the about 0.5mm of thickness, air dry one week, is placed in vacuum drying oven interior in 60 ℃ of vacuumizes to constant weight, and taking-up is placed in drier standby.
The preparation of coated fabric sample: emulsion adds thickener TF-601 thickening, is used coating machine coating, and coated baking temperature is 170 ℃, and the coated baking time is 45s, and two are coated with two dries.
Coated fabric fire resistance test: measure after flame time, the time of glowing, char length by GB/T5455-1997 vertical combustion method.
Resistance to soaping property flame retardant test: first carry out by AATCC135modify standard, take out cloth specimen after repeated washing 5 times, dry, then survey vertical combustion method by GB/T-5455-1997 vertical combustion method and measure after flame time, the time of glowing, char length.
Hydrostatic pressing test: press GB/T4744-1997 standard and carry out.
Table 1 glue film performance test result
Table 2 coated fabric the performance test results
Claims (7)
1. soft section of flame-retardant modified Aqueous Polyurethane Coating Agent of hyperbranched aqueous polyurethane/organophosphor, is characterized in that: comprising:
2. a preparation method for soft section of flame-retardant modified Aqueous Polyurethane Coating Agent of hyperbranched aqueous polyurethane/organophosphor, is characterized in that: concrete preparation process is as follows:
Step 1, fire retardant, oligomer polyol, vulcabond and emulsifying agent are put into container; Pass into inert gas; Under temperature is the condition of 80～100 ℃, react while approaching theoretical value to the content of the NCO of one of product, stop reaction;
Step 2, be then cooled to 30～45 ℃, then add hyperbranched aqueous polyurethane; Obtain mixture A;
Step 3, in the mixture A of step 3 gained, add neutralizer; The performed polymer obtaining after reacting completely;
Step 4, to being added with the performed polymer of pouring step 3 gained in the container of deionized water into, use high speed shear dispersion emulsifying machine emulsification 5～15min simultaneously, after emulsification, revolve and steam except desolventizing, obtain soft section of flame-retardant modified Aqueous Polyurethane Coating Agent of hyperbranched aqueous polyurethane/organophosphor.
3. the preparation method of soft section of flame-retardant modified Aqueous Polyurethane Coating Agent of a kind of hyperbranched aqueous polyurethane/organophosphor as claimed in claim 1 or 2, is characterized in that: the aqueous hyperbranched polyurethane described in described step 2 is a kind of of SWHBPU or AWHBPU or two kinds of mixtures.
4. the preparation method of soft section of flame-retardant modified Aqueous Polyurethane Coating Agent of a kind of hyperbranched aqueous polyurethane/organophosphor as claimed in claim 2, is characterized in that: in step 2, can also add solvent to regulate the viscosity of mixture A.
5. the preparation method of soft section of flame-retardant modified Aqueous Polyurethane Coating Agent of a kind of hyperbranched aqueous polyurethane/organophosphor as claimed in claim 4, it is characterized in that: described solvent is the one or more mixture in butanone, acetone, ethyl acetate, oxolane, toluene, ethyl acetate.
6. the preparation method of soft section of flame-retardant modified Aqueous Polyurethane Coating Agent of a kind of hyperbranched aqueous polyurethane/organophosphor as claimed in claim 1 or 2, is characterized in that: the fire retardant described in described step 1 is organophosphor polyalcohol; Oligomer polyol described in described step 1 is polyester polyol; Vulcabond described in described step 1 is a kind of in toluene di-isocyanate(TDI) TDI, isophorone diisocyanate IPDI, methyl diphenylene diisocyanate MDI, hexamethylene diisocyanate HDI, 2,6 one vulcabond methyl caproate LDI; Emulsifying agent described in described step 1 is dihydromethyl propionic acid.
7. the preparation method of soft section of flame-retardant modified Aqueous Polyurethane Coating Agent of a kind of hyperbranched aqueous polyurethane/organophosphor as claimed in claim 1 or 2, is characterized in that: the neutralizer described in described step 3 is selected from one or more the mixture in triethylamine, tri-n-butylamine, NaOH, potassium hydroxide, calcium hydroxide.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105821671A (en) * | 2016-03-30 | 2016-08-03 | 苏州纳锦新材料科技有限公司 | Preparation method for fabric flame-retardant coating material |
| CN106977681A (en) * | 2017-04-07 | 2017-07-25 | 北京理工大学 | A kind of hyperbranched blending modified chain extension extinguishing waterborn polyurethane of hard section |
| CN107099132A (en) * | 2017-04-07 | 2017-08-29 | 北京理工大学 | A kind of hyperbranched blending modified chain extension extinguishing waterborn polyurethane of soft segment |
| CN107099131A (en) * | 2017-04-07 | 2017-08-29 | 北京理工大学 | A kind of hyperbranched common modified chain extension extinguishing waterborn polyurethane of blending soft and hard segments |
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2014
- 2014-06-24 CN CN201410287467.9A patent/CN104047180A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105821671A (en) * | 2016-03-30 | 2016-08-03 | 苏州纳锦新材料科技有限公司 | Preparation method for fabric flame-retardant coating material |
| CN105821671B (en) * | 2016-03-30 | 2019-06-21 | 苏州纳锦新材料科技有限公司 | A kind of preparation method of fabric fire-resisting coating material |
| CN106977681A (en) * | 2017-04-07 | 2017-07-25 | 北京理工大学 | A kind of hyperbranched blending modified chain extension extinguishing waterborn polyurethane of hard section |
| CN107099132A (en) * | 2017-04-07 | 2017-08-29 | 北京理工大学 | A kind of hyperbranched blending modified chain extension extinguishing waterborn polyurethane of soft segment |
| CN107099131A (en) * | 2017-04-07 | 2017-08-29 | 北京理工大学 | A kind of hyperbranched common modified chain extension extinguishing waterborn polyurethane of blending soft and hard segments |
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Application publication date: 20140917 |