CN101805436B - Bi-component reaction-type flame-retardant waterborne polyurethane and preparation method thereof - Google Patents
Bi-component reaction-type flame-retardant waterborne polyurethane and preparation method thereof Download PDFInfo
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Abstract
The invention discloses bi-component reaction-type flame-retardant waterborne polyurethane and a preparation method thereof. Although the present single-component waterborne polyurethane has convenient construction, multiple performances of the present single-component waterborne polyurethane such as water resistance, solvent resistance, chemicals resistance, abrasion resistance, hardness and the like cannot reach the requirement of the performance of the solvent-type polyurethane. The bi-component reaction-type flame-retardant waterborne polyurethane consists of a component A and a component B, wherein the mass ratio of the components A and B is 5 to 15:1, the component A is obtained by dispersing prepolymer which is synthesized by non-flame-retardant polyalcohol, flame-retardant polyalcohol, diisocyanate, hydrophilic chain extender and catalyst into neutralizer water solution, and the component B is of hydrophilia polyisocyanates curing cross-linking agent. The polyisocyanates is used as the cross-linking agent for crosslink and curing, so the crosslink density of the waterborne polyurethane is greatly improved, and the performance of the water borne polyurethane can be equaled to that of the solvent polyurethane coat.
Description
Technical field
The present invention relates to a kind of bi-component reaction-type flame-retardant waterborne polyurethane and preparation method thereof.
Background technology
Mostly the surfacecti proteon that is used for woodworks such as wood furniture, woodenware structure, timber floor at present is the solvent-borne type paint, and the solvent-borne type paint needs to add a large amount of volatile organic solvents in production, construction and solidification process, environment is polluted.In recent years, countries in the world had all been paid attention to the hazardness of volatile organic matter in the organic exhaust gas (VOC) gradually, and day by day severe about the rules of control VOC, some developed country of west has clearly stipulated organic discharging kind, quantity discharged.Aqueous polyurethane is medium with water, and water do not fire, not quick-fried, nontoxic, tasteless, do not pollute the environment, and execution conditions is good, produces and application safety, can not endanger construction and health of operators; Simultaneously, water is cheap, be easy to get, thus can significantly reduce the cost of product, thereby more and more cause people's attention.
At present both at home and abroad about the preparation of extinguishing waterborn polyurethane mainly aspect the mono-component aqueous urethane.Application number is the one Chinese patent application of 200510122057.X, and it adopts dibromoneopentyl glycol is flame-retardant composition, and it is incorporated in the aqueous polyurethane molecule as chainextender, obtains self-flame-retardant aqueous polyurethane.Application number is 200410025154.2 one Chinese patent application, and it adopts the polyvalent alcohol that contains phosphorus and bromine atoms in the structure simultaneously is flame-retardant composition, and it is synthesized in the aqueous polyurethane, processes case type extinguishing waterborn polyurethane.Application number is 200510030113.7 one Chinese patent application; It adopts phosphorus antimony chlorine ternary phosphoric acid ester polyether glycol; Or the mixture of phosphoric acid ester polyether glycol and dibromoneopentyl glycol, chloro polyether glycol is flame-retardant composition, processes reacting fire-retardant aqueous polyurethane.Above-mentioned patented claim relates to is mono-component aqueous urethane.Mono-component aqueous urethane easy construction, but still can not reach the performance of solvent borne polyurethane at aspects such as many performances such as water tolerance, solvent resistance, chemical-resistant, wear resistance, hardness.
Summary of the invention
Technical problem to be solved by this invention is to overcome the defective that above-mentioned prior art exists; A kind of extinguishing waterborn polyurethane of bi-component reaction-type is provided; It is linked into flame-retardant composition in the polyurethane macromolecular through polyreaction, and release formaldehyde does not produce a large amount of volatile organic solvents; Satisfying the raising to fire-retardant and environmental requirement such as furniture industry, paper industry and building industry, and the range of application of expanding water based polyurethane.
For this reason; The present invention adopts following technical scheme: a kind of bi-component reaction-type flame-retardant waterborne polyurethane; It is characterized in that: this extinguishing waterborn polyurethane is made up of component A and B component; The mass ratio of component A: B is 5-15: 1, and component A is obtained by the aqueous solution that non-flame-proof polyol, flame-proof polyol, vulcabond, hydrophilic chain extender and catalyzer synthetic performed polymer are dispersed in neutralizing agent, and B component is the hydrophilic polyisocyanate cure-crosslinking agent.
Above-mentioned bi-component reaction-type flame-retardant waterborne polyurethane, flame-proof polyol are a kind of organophosphorus polyvalent alcohol, or a kind of Halogen polyvalent alcohol, or the mixture of a kind of organophosphorus polyvalent alcohol and a kind of Halogen polyvalent alcohol.
Above-mentioned bi-component reaction-type flame-retardant waterborne polyurethane; The mass percent of each raw material is following in the performed polymer of component A: vulcabond 10-40%, non-flame-proof polyol 30-60%, organophosphorus polyvalent alcohol 0%-20%; Halogen polyvalent alcohol 0%-40%; Hydrophilic chain extender 4%-6%, catalyzer 0.01%-0.3%, neutralizing agent account for the 3%-4.5% of performed polymer weight.
Above-mentioned bi-component reaction-type flame-retardant waterborne polyurethane; Vulcabond is selected tolylene diisocyanate, isophorone diisocyanate, diphenylmethanediisocyanate, naphthalene-1 for use; 5-vulcabond, hexamethylene diisocyanate, 2; 6-vulcabond methyl caproate, 4,4 '-methylene radical-dicyclohexyl two isocyanates, xylylene diisocyanate, 1, any in the 12-dodecyl vulcabond or the mixture more than two kinds.
Above-mentioned bi-component reaction-type flame-retardant waterborne polyurethane, non-flame-proof polyol are selected the mixture of a kind of in polyether glycol, the polyester polyol or two kinds for use.Polyether glycol comprises: polyoxypropyleneglycol, polyoxytrimethylene triol, PTMG, polyoxytrimethylene-castor oil polyhydric alcohol etc.; Polyester polyol comprises: polycarbonate diol, polyethylene glycol adipate glycol, gather hexanodioic acid glycol ether esterdiol, propenoate polyvalent alcohol, polycaprolactone glycol etc.
Above-mentioned bi-component reaction-type flame-retardant waterborne polyurethane, hydrophilic chain extender are selected the divalent alcohol that contains carboxyl structure for use, or contain the divalent alcohol of sulfonic acid structure, or the former two's mixture.
Above-mentioned bi-component reaction-type flame-retardant waterborne polyurethane, neutralizing agent are selected any or the mixture more than two kinds in triethylamine, tri-n-butylamine, sodium hydroxide, the Pottasium Hydroxide for use.
Above-mentioned bi-component reaction-type flame-retardant waterborne polyurethane, catalyzer are selected stannous octoate, dibutyl tin laurate, N-methylmorpholine, 1 for use, any in the 4-lupetazin or the mixture more than two kinds.
The preparation method of above-mentioned bi-component reaction-type flame-retardant waterborne polyurethane, its step is following:
1) vulcabond, non-flame retardant resistance polyvalent alcohol, hydrophilic chain extender and flame-proof polyol are carried out prepolymerization earlier under catalyst action, react completely dissolve, obtain performed polymer to NCO; In reaction, need to stir and use N
2Protection, temperature of reaction is 60-90 ℃;
2) will go up the performed polymer that obtains of step with its viscosity of an amount of solvent adjustment, be cooled to then below 60 ℃ or 60 ℃;
3) neutralizing agent is made into the aqueous solution, joins then in the performed polymer, carry out the emulsification neutralization immediately, obtain the water dispersion of performed polymer, rotary evaporation removes and desolvates, and obtains component A;
4) before the use component A is mixed with B component, stir, promptly get bi-component reaction-type flame-retardant waterborne polyurethane.
Above-mentioned bi-component reaction-type flame-retardant waterborne polyurethane, it is applied in the fire-retardant finish of furniture wood lacquer, and flame retardant effect is remarkable, and objectionable impurities such as release formaldehyde is not the fire-retardant varnish of environment-friendly type, has vast market prospect.
The present invention has following beneficial effect: extinguishing waterborn polyurethane have transparent, not release formaldehyde, do not produce the characteristics of a large amount of volatile organic solvents; After adopting this aqueous polyurethane that furniture etc. is carried out blade coating; Coating has water tolerance, wear resistance preferably; Simultaneously according to National Standard finishing fire retardant paint general technical specifications " measure anti-combustion time>=20min, flame propagation ratio≤30; Through using POLYMETHYLENE POLYPHENYLISOCYANATE as the linking agent crosslinking curing, improved the commissure density of aqueous polyurethane greatly, performance can compare favourably with solvent borne polyurethane coating.
Through embodiment the present invention is described further below.
Embodiment
Embodiment 1
The prescription of component A is following:
| Raw material | Quality/g |
| Tolylene diisocyanate (TDI) | 12.88 |
| Organophosphorus polyvalent alcohol (hydroxyl value 170mgKOH/g) | 19.43 |
| Polyether glycol (PPG, hydroxyl value 109-115mgKOH/g) | 60.00 |
| Dimethylol propionic acid (DMPA) | 4.86 |
| Triethylamine (TEA) | 3.29 |
| Stannous octoate (T9) | 0.15 |
| Deionized water | 402 |
Preparation process is following:
(1) whisking appliance is being housed, reflux condensing tube, order adds PPG, TDI, DMPA and organophosphorus polyvalent alcohol in N in the four-hole boiling flask of TM
2React to NCO completely dissolve (available ir spectra detects it) under the protection, obtain performed polymer;
(2) be cooled to 40 ℃, regulate performed polymer viscosity with the 30g butanone;
(3) TEA is dissolved in the 402g deionized water, joins in the performed polymer, in emulsify at a high speed equipment, carry out in the emulsification immediately and 5-10min, rotary evaporation is removed butanone, obtains bi-component reaction-type aqueous polyurethane component A;
(4) in component A, add B component hydrophilic polyisocyanate cure-crosslinking agent (WT2102) 34.33g, even with water conservancy project or mechanical stirring, be product of the present invention.
Press CNS, the dual-component aqueous polyurethane among the embodiment is tested, the result is: sticking power: 1 grade (cross-hatching); Surface drying time: 7h; Do solid work the time: 24h; Hardness: 2H; Shock-resistance: 50cm; Snappiness: 2 grades; Glossiness: 53%; Water tolerance/48h: slightly turn white; The anti-combustion time: 26min; Flame propagation ratio: 28.
Embodiment 2
The prescription of component A is following:
| Raw material | Quality/g |
| Isophorone diisocyanate (IPDI) | 42.61 |
| Halogen polyvalent alcohol (hydroxyl value 428mgKOH/g) | 54.48 |
| Polyester polyol (PEA, hydroxyl value 105-115mgKOH/g) | 60.00 |
| Dimethylol propionic acid (DMPA) | 7.78 |
| Triethylamine (TEA) | 5.28 |
| Stannous octoate (T9) | 0.23 |
| Deionized water | 484 |
Preparation process is following:
(1) whisking appliance is being housed, reflux condensing tube, order adds PEA, IPDI, DMPA and Halogen polyvalent alcohol in the four-hole boiling flask of TM, at N
2React to NCO completely dissolve (available ir spectra detects it) under the protection, obtain performed polymer;
(2) be cooled to 40 ℃, regulate performed polymer viscosity with the 40g butanone;
(3) TEA is dissolved in the 484g deionized water, joins in the performed polymer, in emulsify at a high speed equipment, carry out in the emulsification immediately and 5-10min, rotary evaporation is removed butanone, obtains bi-component reaction-type aqueous polyurethane component A;
(4) in component A, add B component hydrophilic polyisocyanate cure-crosslinking agent (Byhydur2319) 93.97g, even with water conservancy project or mechanical stirring, be product of the present invention.
Press CNS, the dual-component aqueous polyurethane among the embodiment is tested, the result is: sticking power: 1 grade (cross-hatching); Surface drying time: 8h; Do solid work the time: 26h; Hardness: 2H; Shock-resistance: 50cm; Snappiness: 1 grade; Glossiness: 90%; Water tolerance/48h: no change; The anti-combustion time: 23min; Flame propagation ratio: 30.
Embodiment 3
The prescription of component A is following:
| Raw material | Quality/g |
| Diphenylmethane diisocyanate (MDI) | 32.32 |
| Organophosphorus polyvalent alcohol (hydroxyl value 170mgKOH/g) | 12.31 |
| Polyether glycol (PPG, hydroxyl value 109-115mgKOH/g) | 60 |
| Halogen polyvalent alcohol (hydroxyl value 428mgKOH/g) | 12.31 |
| Dimethylol propionic acid (DMPA) | 6.15 |
| Triethylamine (TEA) | 4.17 |
| Dibutyl tin laurate (T12) | 0.21 |
| Deionized water | 467 |
Preparation process is following:
(1) whisking appliance is being housed, reflux condensing tube, order adds PPG, TDI, DMPA and organophosphorus polyvalent alcohol and Halogen polyvalent alcohol in the four-hole boiling flask of TM, at N
2React to NCO completely dissolve (available ir spectra detects it) under the protection, obtain performed polymer;
(2) be cooled to 40 ℃, regulate performed polymer viscosity with the 40g butanone;
(3) TEA is dissolved in the 467g deionized water, joins in the performed polymer, in emulsify at a high speed equipment, carry out in the emulsification immediately and 5-10min, rotary evaporation is removed butanone, obtains bi-component reaction-type aqueous polyurethane component A;
(4) in component A, add B component hydrophilic polyisocyanate cure-crosslinking agent (Byhydur3100) 67.00g, even with water conservancy project or mechanical stirring, be product of the present invention.
Press CNS, the dual-component aqueous polyurethane among the embodiment is tested, the result is: sticking power: 1 grade (cross-hatching); Surface drying time: 6h; Do solid work the time: 20h; Hardness: 2H; Shock-resistance: 50cm; Snappiness: 1 grade; Glossiness: 73%; Water tolerance/48h: no change; The anti-combustion time: 35min; Flame propagation ratio: 24.
Embodiment 4
The prescription of component A is following:
| Raw material | Quality/g |
| Tolylene diisocyanate (TDI) | 6.44 |
| Isophorone diisocyanate (IPDI) | 8.21 |
| Organophosphorus polyvalent alcohol (hydroxyl value 170mgKOH/g) | 19.43 |
| Polyether glycol (PPG, hydroxyl value 109-115mgKOH/g) | 30.00 |
| Polyester polyol (PEA, hydroxyl value 105-115mgKOH/g) | 30.00 |
| Dimethylol propionic acid (DMPA) | 4.86 |
| Triethylamine (TEA) | 3.29 |
| Stannous octoate (T9) | 0.15 |
| Deionized water | 405 |
Preparation process is following:
(1) whisking appliance is being housed, reflux condensing tube, order adds PPG, PEA, IPDI, TDI, DMPA and organophosphorus polyvalent alcohol in N in the four-hole boiling flask of TM
2React to NCO completely dissolve (available ir spectra detects it) under the protection, obtain performed polymer;
(2) be cooled to 40 ℃, regulate performed polymer viscosity with the 30g butanone;
(3) TEA is dissolved in the 405g deionized water, joins in the performed polymer, in emulsify at a high speed equipment, carry out in the emulsification immediately and 5-10min, rotary evaporation is removed butanone, obtains bi-component reaction-type aqueous polyurethane component A;
(4) in component A, add B component hydrophilic polyisocyanate cure-crosslinking agent (WT2102) 34.33g, even with water conservancy project or mechanical stirring, be product of the present invention.
Press CNS, the dual-component aqueous polyurethane among the embodiment is tested, the result is: sticking power: 1 grade (cross-hatching); Surface drying time: 8h; Do solid work the time: 28h; Hardness: 2H; Shock-resistance: 50cm; Snappiness: 2 grades; Glossiness: 53%; Water tolerance/48h: slightly turn white; The anti-combustion time: 24min; Flame propagation ratio: 27.
Embodiment 5
The prescription of component A is following:
| Raw material | Quality/g |
| Tolylene diisocyanate (TDI) | 12.88 |
| Organophosphorus polyvalent alcohol (hydroxyl value 170mgKOH/g) | 19.43 |
| Polyether glycol (PPG, hydroxyl value 109-115mgKOH/g) | 60.00 |
| 1,4-butyleneglycol 2-sodium sulfonate | 6.96 |
| Triethylamine (TEA) | 3.29 |
| Stannous octoate (T9) | 0.15 |
| Deionized water | 402 |
Preparation process is following:
(1) whisking appliance is being housed, reflux condensing tube, order adds PPG, TDI, DMPA and organophosphorus polyvalent alcohol in N in the four-hole boiling flask of TM
2React to NCO completely dissolve (available ir spectra detects it) under the protection, obtain performed polymer;
(4) be cooled to 40 ℃, regulate performed polymer viscosity with the 30g butanone;
(5) TEA is dissolved in the 402g deionized water, joins in the performed polymer, in emulsify at a high speed equipment, carry out in the emulsification immediately and 5-10min, rotary evaporation is removed butanone, obtains bi-component reaction-type aqueous polyurethane component A;
(4) in component A, add B component hydrophilic polyisocyanate cure-crosslinking agent (WT2102) 34.33g, even with water conservancy project or mechanical stirring, be product of the present invention.
Press CNS, the dual-component aqueous polyurethane among the embodiment is tested, the result is: sticking power: 1 grade (cross-hatching); Surface drying time: 7h; Do solid work the time: 24h; Hardness: 2H; Shock-resistance: 50cm; Snappiness: 2 grades; Glossiness: 45%; Water tolerance/48h: slightly turn white; The anti-combustion time: 26min; Flame propagation ratio: 28.
The above only is preferred embodiment of the present invention, is not technical scheme of the present invention is done any pro forma restriction.Every foundation technical spirit of the present invention all falls in protection scope of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (6)
1. bi-component reaction-type flame-retardant waterborne polyurethane; It is characterized in that: this extinguishing waterborn polyurethane is made up of component A and B component; The mass ratio of component A: B is 5-15: 1; Component A is dispersed in by non-flame-proof polyol, flame-proof polyol, vulcabond, hydrophilic chain extender and catalyzer synthetic performed polymer in the aqueous solution of neutralizing agent and obtains, and B component is the hydrophilic polyisocyanate cure-crosslinking agent;
Described flame-proof polyol is a kind of organophosphorus polyvalent alcohol, or a kind of Halogen polyvalent alcohol, or the mixture of a kind of organophosphorus polyvalent alcohol and a kind of Halogen polyvalent alcohol;
The mass percent of each raw material is following in the performed polymer of component A: vulcabond 10-40%; Non-flame-proof polyol 30-60%, organophosphorus polyvalent alcohol 0%-20%, Halogen polyvalent alcohol 0%-40%; Hydrophilic chain extender 4%-6%; Catalyzer 0.01%-0.3%, neutralizing agent account for the 3%-4.5% of performed polymer weight, and the content of organophosphorus polyvalent alcohol and Halogen polyvalent alcohol can not be zero simultaneously;
Described catalyzer is selected stannous octoate, dibutyl tin laurate, N-methylmorpholine, 1 for use, any in the 4-lupetazin or the mixture more than two kinds.
2. bi-component reaction-type flame-retardant waterborne polyurethane according to claim 1; It is characterized in that described vulcabond selects tolylene diisocyanate, isophorone diisocyanate, diphenylmethanediisocyanate, naphthalene-1 for use; 5-vulcabond, hexamethylene diisocyanate, 2; 6-vulcabond methyl caproate, 4; 4 '-methylene radical-dicyclohexyl two isocyanates, xylylene diisocyanate, 1, any in the 12-dodecyl vulcabond or the mixture more than two kinds.
3. bi-component reaction-type flame-retardant waterborne polyurethane according to claim 1 is characterized in that described non-flame-proof polyol selects the mixture of a kind of in polyether glycol or the polyester polyol or two kinds for use.
4. bi-component reaction-type flame-retardant waterborne polyurethane according to claim 1 is characterized in that described hydrophilic chain extender selects the divalent alcohol that contains carboxyl structure for use, or contains the divalent alcohol of sulfonic acid structure, or the former two's mixture.
5. bi-component reaction-type flame-retardant waterborne polyurethane according to claim 1 is characterized in that described neutralizing agent selects any or the mixture more than two kinds in triethylamine, tri-n-butylamine, sodium hydroxide, the Pottasium Hydroxide for use.
6. according to the preparation method of each described bi-component reaction-type flame-retardant waterborne polyurethane of claim 1-5, it comprises the steps:
1) vulcabond, non-flame retardant resistance polyvalent alcohol, hydrophilic chain extender and flame-proof polyol are carried out prepolymerization earlier under catalyst action, react completely dissolve, obtain performed polymer to NCO; In reaction, need to stir and use N
2Protection, temperature of reaction is 60-90 ℃;
2) will go up the performed polymer that obtains of step with its viscosity of solvent adjustment, be cooled to then below 60 ℃ or 60 ℃;
3) neutralizing agent is made into the aqueous solution, joins then in the performed polymer, carry out the emulsification neutralization immediately, obtain the water dispersion of performed polymer, rotary evaporation removes and desolvates, and obtains component A;
4) before the use component A is mixed with B component, stir, promptly get bi-component reaction-type flame-retardant waterborne polyurethane.
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| CN101805436A (en) | 2010-08-18 |
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Address after: 311215 Xiaoshan economic and Technological Development Zone, Hangzhou, Zhejiang Patentee after: The mass of Limited by Share Ltd Address before: 311215 Xiaoshan economic and Technological Development Zone, Hangzhou, Zhejiang Patentee before: Chuanhua Co., Ltd., Zhejiang |
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Effective date of registration: 20210519 Address after: 311215 Xiaoshan Economic and Technological Development Zone, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: TRANSFAR ZHILIAN Co.,Ltd. Patentee after: Zhejiang ChuanHua functional new material Co.,Ltd. Patentee after: HANGZHOU TRANSFAR FINE CHEMICAL Co.,Ltd. Address before: 311215 Xiaoshan economic and Technological Development Zone, Zhejiang, Hangzhou Patentee before: TRANSFAR ZHILIAN Co.,Ltd. |