CN104987851B - One kind electrolysis door filling polyurethane cellular glue and preparation method thereof - Google Patents
One kind electrolysis door filling polyurethane cellular glue and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of chemical industry, a kind of electrolysis door filling polyurethane cellular glue and preparation method thereof is disclosed.The polyurethane cellular glue, is prepared from by the following component counted by weight：Make base polyurethane prepolymer for use as 80~100, foaming agent 150~180, foam stabiliser 2~5, tackifying resin 35~40 and active filler 50~80 by oneself.Polyurethane cellular glue environmental protection prepared by the present invention, nontoxic pollution-free, performance are good, the fine and smooth uniform, cost of foam is low, curing rate is reasonable；And the preparation method of the present invention is simple, it is easy to accomplish, it can be applied to electrolysis door field.
Description
Technical field
The invention belongs to the technical field of chemical industry, and in particular to one kind electrolysis door filling polyurethane cellular glue and its preparation
Method.
Background technology
It is a kind of new interior door technology of preparing to be electrolysed gate technique, and electrolysis door main material uses electrolytic zinc-coated steel sheet, interior filling polymerization
Thing, its have elegant in appearance, anticorrosion, resistance to deformation, it is durable the features such as.Should have pressure-resistant as the filler of electrolysis door and bond
The features such as power is strong.But in existing technology, filler typically contains the poisonous material for having a pollution of volatility, and its mechanics
Poor-performing.The built-in filler of current electrolysis door mainly uses polyurethane foam honeycomb adhesive.
Polyurethane foam honeycomb adhesive has excellent physical and mechanical properties, acoustical behavior, electric property and chemical-resistance
Etc. quality, its market is particularly applied than wide just in sustainable growth in building, automobile, steamer, insulation material industry.
Expansion type adhesive for polyurethane can water and moisture-curable, have after solidification with intensity as Plastic, it is again tough with class rubber
Property, at the same adhesion strength is high, oil resistant, water-fast, high temperature resistant, impact resistance, vibration resistance, good electrical insulating property the features such as, and be easily worked.
Being usually used in the diisocyanate of polyurethane foam glue has aliphatic acid and aromatic types.But the isocyanide of fatty acid type two
It is not apparent that acid esters, which improves adhesive cohesive strength,.Although aromatic series dicyanate can significantly improve cohesive strength,
It is typically conventional aroma type diisocyanate as toluene di-isocyanate(TDI), methyl diphenylene diisocyanate have different degrees of
It is not enough.Toluene di-isocyanate(TDI) has that vapour pressure is big, volatile feature, therefore its harmfulness is big.Methyl diphenylene diisocyanate
There is the advantage such as fast compared with the former small toxicity, reaction speed, but generally solid is inconvenient for use at normal temperatures for pure substance, it is lived in addition
Property the high dimer that easily formed produce gel.
Publication No. CN 102295910A Chinese patent discloses a kind of high-strength polyurethane honeycomb adhesive and its preparation side
Method, the polyurethane cellular adhesiveness that this method is prepared is stable, but the polyurethane foam honeycomb adhesive of this report mainly uses first
Phenylene diisocyanate is base-material with the performed polymer that self-control PPG is synthesized.Toluene di-isocyanate(TDI) high volatility, strong toxicity
The characteristics of, therefore the polyurethane cellular glue environmental-protecting performance is to be improved.In addition PPG complex process and application are made by oneself
The defect such as can have much room for improvement.
The content of the invention
In order to overcome the shortcoming and defect of prior art, primary and foremost purpose of the invention is that providing a kind of electrolysis door filling uses
Polyurethane cellular glue.The polyurethane cellular glue environmental-protecting performance of the present invention is high, and nontoxic pollution-free, bond strength are high, foam is fine and smooth
Even, cost is low, curing rate is reasonable；The environmental-protecting performance for overcoming existing product is poor, and adhesion strength is not high, curing rate is too fast etc.
Defect, meets the electrolysis door sector application requirement that growing environmental requirement is improved with technology.
Another object of the present invention is to provide the preparation method of above-mentioned electrolysis door filling polyurethane cellular glue.
The purpose of the present invention is achieved through the following technical solutions：
Polyurethane cellular glue is used in one kind electrolysis door filling, is prepared from by the following component counted by weight：
The self-control base polyurethane prepolymer for use as, which is prepared by the following method, to be obtained：
In nitrogen atmosphere, in 65~75 DEG C, PPG is instilled into the polyphenyl polymethylene containing catalyst many
In isocyanate solution, completion of dropping continues to react 2.5~3.5h, obtains making base polyurethane prepolymer for use as by oneself.
The weight ratio of the PPG and polyphenyl polymethylene polyisocyanates is (30~60)：(15~30)；
The polyphenyl polymethylene polyisocyanates solution is that polyphenyl polymethylene polyisocyanates are dissolved in organic solvent and are prepared into
Arrive, the weight ratio of polyphenyl polymethylene polyisocyanates and organic solvent is (15~30)：(15~40).The rate of addition
For 20~30 drops/min.
The PPG be hydroxyl value be 37~61mgKOH/g Polyoxyethylene glycols or hydroxyl value be 42~
One kind of 112mgKOH/g trimethylolpropanes-propylene oxide polyethers；The PPG is using being preceding heated to 120~140
DEG C, 60~80min of insulation reaction.
NCO mass fractions are 30~33% in the polyphenyl polymethylene polyisocyanates.
The catalyst is triethylenediamine, double (dimethyl amido ethyl) ethers, dimethyl cyclohexyl amine, dimethyl ethanol
One kind in amine, N, double (diimino propyl group) isopropanolamine, N-ethylmorpholine, dibutyl tin laurate or the stannous octoates of N-
More than.The weight ratio of the catalyst and polyphenyl polymethylene polyisocyanates is (0.03~0.07)：(15~30).
The organic solvent is ethyl acetate, propyl acetate, MEK, methyl isopropyl Ketone, ethylene glycol monoethyl ether, second two
Alcohol list propyl ether, toluene or dimethylbenzene more than one.
The foam stabiliser is stabilizer B8404, B8863Z, B8454, Silbk 9000, Silbk 9020 or Silbk
9204 one kind.
The foaming agent is more than one of pentamethylene, pentane, isopentane, iso-butane, normal butane or dichloromethane.
The tackifying resin is Petropols, terpene resin, coumarone indene resin, one kind of rosin resin；The oil tree
Fat is one or two in C5 resins or C9 resins.
The active filler is the mesh calcium carbonate of industrial light 325, industrial 1000 mesh kaolin, industrial 2000 mesh wollastonite
Powder, the industrial fine and smooth stone flour of 350 mesh, industrial 400 mesh muscovite, industrial 1000 mesh titanium dioxide, industrial 400 mesh blanc fixe or industry
1000 mesh carbon blacks more than one.
The electrolysis door filling preparation method of polyurethane cellular glue, specifically includes following steps：
(1) under the atmosphere of nitrogen, in 65~75 DEG C, foam stabiliser and tackifying resin are added into self-control polyurethane prepolymer
In body, 1~2h is stirred, finely dispersed system is obtained；
(2) system in step (1) is cooled to 30~40 DEG C, adds foaming agent and active filler, continue to stir 30~
40min, obtains polyurethane cellular glue.
The rotating speed stirred described in step (1) is 300~500r/min；The rotating speed stirred described in step (2) be 400~
600r/min。
Prepared polyurethane cellular glue is solid containing being 70%~80%, and 3000~4000mPas of viscosity, aluminium sheet bonds strong
Spend 1.5~2.0Mpa, 0.8~1.0Mpa of shear strength, elongation at break 60~80%, expansion ratio 12~15, grade of burning
B2 grades, surface drying 120~150min of hardening time.
The present invention uses polyphenyl polymethylene polyisocyanates, is methyl diphenylene diisocyanate polymer, activity
With vapour pressure, lower than methyl diphenylene diisocyanate, price is cheap compared with its.Under phase homogenous quantities, polyphenyl polymethylene is more
Isocyanates has more isocyanates foundation groups, in solidification with the more polyurethane-ureas of water reaction generation in air
Key, its own polyisocyanic acid root can be risen similar to self-crosslinking, therefore foamed glue formation molecular weight very big polymer.It is poly-
A large amount of polyurethane-urea keys have very strong polarity in compound, and macro manifestations are having very strong cohesive force with metal surface.This
Outer isocyanate content is high, and curing rate is fast, and the carbon dioxide produced with water, which is not diffused out, to be just cured in colloid layer,
Therefore the present invention foamed glue have while solidification while foam, the very fine and smooth uniform feature of foam.
Compared with prior art, the invention has the advantages that：
The polyurethane cellular colloidality of the present invention can be higher, environmental protection, nontoxic pollution-free, bond strength are high, foam is fine and smooth uniformly,
Cost is low, curing rate is reasonable；The preparation method of the present invention is simple, it is easy to accomplish；Environmental protection filling is consolidated with polyurethane cellular glue
Containing for 70%~80%, 3000~4000mPas of viscosity, aluminium sheet 1.5~2.0Mpa of adhesion strength, shear strength 0.8~
1.0Mpa, elongation at break 60~80%, expansion ratio 12~15, B2 grades of grade of burning, surface drying hardening time 120~
150min。
Embodiment
To more fully understand the present invention, with reference to embodiment, the present invention is further illustrated, but the reality of the present invention
Apply mode not limited to this.
Embodiment 1
Polyurethane cellular glue is used in one kind electrolysis door filling, is prepared by the following method and is obtained：
(1) 50 parts by weight hydroxyl values are heated to 120 DEG C for 37 Polyoxyethylene glycol, insulation reaction 80min makes polyethers
In moisture fully remove, obtain the polyether Glycols of water；
(2) polyphenyl polymethylene polyisocyanates and 30 parts by weight by the NCO mass fractions of 20 parts by weight for 30%
Ethyl acetate stir, add 0.05 parts by weight triethylenediamine, obtain the polyphenyl polymethylene containing catalyst many
Isocyanate solution；
(3) all polyphenyl polymethylene polyisocyanates solution containing catalyst of step (2) are warming up to 75 DEG C,
Under nitrogen atmosphere, all polyether Glycols of step (1) are instilled into (speed of dropwise addition please be 20 drops/min) molten to isocyanates
In liquid, after dripping, continue to react 3.5h, obtain homemade base polyurethane prepolymer for use as；
(4) at nitrogen atmosphere and 75 DEG C, added 2 parts by weight stabilizer B8404's with 35 parts by weight rosin resins
In 80 parts by weight step (3) homemade base polyurethane prepolymer for use as, stirring 2h (rotating speed of stirring is 300r/min) is uniformly dispersed
System；
(5) system of step (4) is cooled to 30 DEG C, adds dichloromethane, the pentamethylene of 50 parts by weight of 100 parts by weight
With the mesh calcium carbonate of industrial light 325 of 50 parts by weight, stirring 30min (rotating speed is 530r/min) obtains polyurethane cellular glue.
The polyurethane cellular adhesiveness 3150mPas, aluminium sheet adhesion strength 1.5Mpa, shear strength 1.0Mpa, foaming
Multiplying power 12, burn B2 grades of grade, surface drying hardening time 120min.
Implement row 2
Polyurethane cellular glue is used in one kind electrolysis door filling, is prepared by the following method and is obtained：
(1) it is that 56 Polyoxyethylene glycols are heated to 140 DEG C by 60 parts by weight hydroxyl values, insulation reaction 60min makes in polyethers
Moisture fully remove, obtain the polyether Glycols of water；
(2) polyphenyl polymethylene polyisocyanates and 15 parts by weight by the NCO mass fractions of 25 parts by weight for 30%
Toluene stir, add double (dimethyl amido ethyl) ethers of 0.03 parts by weight and 0.01 parts by weight triethylenediamine, obtain
To the polyphenyl polymethylene polyisocyanates solution containing catalyst；
(3) all polyphenyl polymethylene polyisocyanates solution containing catalyst of step (2) are warming up to 70 DEG C,
The polyether Glycols in step (1) are added dropwise in isocyanate solution (speed of dropwise addition is 30 drops/min) in nitrogen atmosphere,
After dripping, continue to react 2.5h, obtain homemade base polyurethane prepolymer for use as；
(4) at nitrogen atmosphere and 70 DEG C, 5 parts by weight stabilizer B8863Z and 40 parts by weight Petropols are added
In the homemade base polyurethane prepolymer for use as of 100 parts by weight steps (3), stirring 2h (rotating speed of stirring is 500r/min) is disperseed
Uniform system；
(5) system of step (4) is cooled to 30 DEG C, adds the pentamethylene of 180 parts by weight and the industry of 40 parts by weight
1000 mesh kaolin and the industrial 2000 mesh wollastonites in powder of 40 parts by weight, stirring 30min (rotating speed is 560r/min) obtain environmental protection poly-
Urethane honeycomb adhesive.
The environmental protection filling polyurethane cellular adhesiveness 3060mPas, aluminium sheet adhesion strength 1.6Mpa, shear strength
0.8Mpa, expansion ratio 15, burn B2 grades of grade, surface drying hardening time 150min.
Implement row 3
Polyurethane cellular glue is used in one kind electrolysis door filling, is prepared by the following method and is obtained：
(1) 40 parts by weight hydroxyl values are heated to 120 DEG C for 61 Polyoxyethylene glycol, insulation reaction 80min makes polyethers
In moisture fully remove, obtain the polyether Glycols of water；
(2) polyphenyl polymethylene polyisocyanates and 15 parts by weight by the NCO mass fractions of 25 parts by weight for 30%
Dimethylbenzene stir, add 0.03 parts by weight dimethyl cyclohexyl amine and 0.03 parts by weight dibutyl tin laurate, obtain
Polyphenyl polymethylene polyisocyanates solution containing catalyst；
(3) all polyphenyl polymethylene polyisocyanates solution containing catalyst of step (2) are warming up to 65 DEG C,
Under nitrogen atmosphere, the polyether Glycols in step (1) are added dropwise in isocyanate solution (speed of dropwise addition is 25 drops/min),
After dripping, continue to react 2.5h, obtain homemade base polyurethane prepolymer for use as；
(4) at nitrogen atmosphere and 65 DEG C, 5 parts by weight stabilizer B8454 and 35 parts by weight terpene resins are added 90
In the homemade base polyurethane prepolymer for use as of parts by weight step (3), stirring 1h (rotating speed of stirring is 400r/min) is uniformly dispersed
System；
(5) system of step (4) is cooled to 35 DEG C, adds the normal butane of 160 parts by weight and the industry 400 of 60 parts by weight
Mesh blanc fixe, stirring 35min (rotating speed of stirring is 480r/min), obtains environment-friendly polyurethane honeycomb adhesive.
The environmental protection filling polyurethane cellular adhesiveness 3258mPas, aluminium sheet adhesion strength 2.0Mpa, shear strength
1.0Mpa, expansion ratio 13, burn B2 grades of grade, surface drying hardening time 135min.
Implement row 4
Polyurethane cellular glue is used in one kind electrolysis door filling, is prepared by the following method and is obtained：
(1) it is that 42 trimethylolpropanes-propylene oxide polyethers is heated to 140 DEG C, insulation reaction by 50 parts by weight hydroxyl values
80min, makes the moisture in polyethers fully remove, and obtains the polyether Glycols of water；
(2) polyphenyl polymethylene polyisocyanates and 35 parts by weight by the NCO mass fractions of 15 parts by weight for 30%
Propyl acetate stir, add 0.07 parts by weight dimethylethanolamine, obtain the polyphenyl polymethylene containing catalyst many
Isocyanate solution；
(3) all polyphenyl polymethylene polyisocyanates solution containing catalyst of step (2) are warming up to 70 DEG C,
Under nitrogen atmosphere, the polyether-tribasic alcohol in step (1) is added dropwise in isocyanate solution (speed of dropwise addition is 23 drops/min),
Continue to react 3h, obtain homemade base polyurethane prepolymer for use as；
(4) at nitrogen atmosphere and 70 DEG C, 5 parts by weight stabilizer Silbk 9000 and 40 parts by weight coumarone trees are added
Fat is added in the homemade base polyurethane prepolymer for use as of 95 parts by weight steps (3), stirring 1.5h (rotating speed of stirring is 350r/min), is obtained
To finely dispersed system；
(5) system to step (4) is cooled to 40 DEG C, adds the iso-butane of 170 parts by weight and the industry 400 of 70 parts by weight
Mesh muscovite, stirring 38min (rotating speed of stirring is 550r/min), obtains environment-friendly polyurethane honeycomb adhesive.
The environmental protection filling polyurethane cellular adhesiveness 3368mPas, aluminium sheet adhesion strength 1.7Mpa, shear strength
0.9Mpa, expansion ratio 12, burn B2 grades of grade, surface drying hardening time 125min.
Implement row 5
Polyurethane cellular glue is used in one kind electrolysis door filling, is prepared by the following method and is obtained：
(1) it is that 67 trimethylolpropanes-propylene oxide polyethers is heated to 130 DEG C, insulation reaction by 55 parts by weight hydroxyl values
70min, makes the moisture in polyethers fully remove, and obtains the polyether Glycols of water；
(2) polyphenyl polymethylene polyisocyanates and 20 parts by weight by the NCO mass fractions of 25 parts by weight for 33%
MEK stir, add double (diimino propyl group) isopropanolamines of 0.03 parts by weight N, N-, obtain containing many of catalyst
Phenyl polymethylene polyisocyanate solution；
(3) all polyphenyl polymethylene polyisocyanates solution containing catalyst of step (2) are warming up to 75 DEG C,
Under nitrogen atmosphere, the PTMEG in step (1) is added dropwise in isocyanate solution (speed of dropwise addition is 26 drops/min), drop
Add, continue to react 2.5h, obtain homemade base polyurethane prepolymer for use as；
(4) at nitrogen atmosphere and 75 DEG C, by 2 parts by weight stabilizer Silbk 9020 and 37 parts by weight coumarone indene resins
In the homemade base polyurethane prepolymer for use as adding 85 parts by weight steps (3), stirring 2h (rotating speed of stirring is 450r/min) is divided
Dissipate uniform system；
(5) system of step (4) is cooled to 37 DEG C, adds the pentane of 175 parts by weight and the industry 400 of 60 parts by weight
Mesh blanc fixe, stirring 35min (rotating speed of stirring is 450r/min), obtain environment-friendly polyurethane honeycomb adhesive.
The environmental protection filling polyurethane cellular adhesiveness 3391mPas, aluminium sheet adhesion strength 1.8Mpa, shear strength
0.9Mpa, expansion ratio 15, burn B2 grades of grade, surface drying hardening time 130min.
Implement row 6
Polyurethane cellular glue is used in one kind electrolysis door filling, is prepared by the following method and is obtained：
(1) it is that 112 trimethylolpropanes-propylene oxide polyethers is heated to 130 DEG C, insulation reaction by 40 parts by weight hydroxyl values
75min, makes the moisture in polyethers fully remove, and obtains the polyether Glycols of water；
(2) polyphenyl polymethylene polyisocyanates and 25 parts by weight by the NCO mass fractions of 30 parts by weight for 32%
Methyl isopropyl Ketone stir, add 0.05 parts by weight N-ethylmorpholine, obtain the polyphenyl polymethylene containing catalyst
Polyisocyanate solution；
(3) all polyphenyl polymethylene polyisocyanates solution containing catalyst of step (2) are warming up to 67 DEG C,
Under nitrogen atmosphere, the polyether-tribasic alcohol in step (1) is added dropwise in isocyanate solution (speed of dropwise addition is 27 drops/min),
After dripping, continue to react 3h, obtain homemade base polyurethane prepolymer for use as；
(4) at nitrogen atmosphere and 67 DEG C, 5 parts by weight stabilizer Silbk 9204 and 40 parts by weight rosin resins are added
In the homemade base polyurethane prepolymer for use as adding 80 parts by weight steps (3), stirring 1.5h (rotating speed of stirring is 480r/min) is obtained
Finely dispersed system；
(5) system of step (4) is cooled to 35 DEG C, adds the dichloromethane of 180 parts by weight and the industry of 50 parts by weight
1000 mesh carbon blacks, stirring 40min (rotating speed is 500r/min), obtain environment-friendly polyurethane honeycomb adhesive.
The environmental protection filling polyurethane cellular adhesiveness 3658mPas, aluminium sheet adhesion strength 1.5Mpa, shear strength
0.9Mpa, expansion ratio 15, burn B2 grades of grade, surface drying hardening time 120min.
Implement row 7
Polyurethane cellular glue is used in one kind electrolysis door filling, is prepared by the following method and is obtained：
(1) it is that 112 trimethylolpropanes-propylene oxide polyethers is heated to 140 DEG C, insulation reaction by 30 parts by weight hydroxyl values
60min, makes the moisture in polyethers fully remove, and obtains the polyether Glycols of water；
(2) polyphenyl polymethylene polyisocyanates by the NCO mass fractions of 24 parts by weight for 31%, 30 parts by weight
Ethylene glycol monoethyl ether stirs with 10 parts by weight of xylene, adds 0.03 parts by weight dibutyl tin laurate, obtains containing and urges
The polyphenyl polymethylene polyisocyanates solution of agent；
(3) all polyphenyl polymethylene polyisocyanates solution containing catalyst of step (2) are warming up to 72 DEG C,
Under nitrogen atmosphere, the PTMEG in step (1) is added dropwise in isocyanate solution (velocity potential 28 of dropwise addition drips/min), dripped
After adding, continue to react 2.5h, obtain homemade base polyurethane prepolymer for use as；
(4) at nitrogen atmosphere and 72 DEG C, 4 parts by weight stabilizer B8404 and 40 parts by weight rosin resins are added 100
In the homemade base polyurethane prepolymer for use as of parts by weight step (3), stirring 1h (rotating speed of stirring is 360r/min) is uniformly dispersed
System；
(5) 32 DEG C are cooled to step (4), the iso-butane of 150 parts by weight of addition and industrial 350 mesh of 50 parts by weight are fine and smooth
Stone flour, stirring 40min (rotating speed of stirring is 600r/min), obtains environment-friendly polyurethane honeycomb adhesive.
The environmental protection filling polyurethane cellular adhesiveness 3720mPas, aluminium sheet adhesion strength 2.0Mpa, shear strength
0.8Mpa, expansion ratio 14, burn B2 grades of grade, surface drying hardening time 140min.
Implement row 8
Polyurethane cellular glue is used in one kind electrolysis door filling, is prepared by the following method and is obtained：
(1) it is that 112 trimethylolpropanes-propylene oxide polyethers is heated to 140 DEG C, insulation reaction by 30 parts by weight hydroxyl values
75min, makes the moisture in polyethers fully remove, and obtains the polyether Glycols of water；
(2) polyphenyl polymethylene polyisocyanates by the NCO mass fractions of 20 parts by weight for 31%, 20 parts by weight
Ethylene glycol monoethyl ether stirs with 20 weight part of ethylacetate, adds 0.05 parts by weight of octanoic acid stannous, obtains containing catalyst
Polyphenyl polymethylene polyisocyanates solution；
(3) all polyphenyl polymethylene polyisocyanates solution containing catalyst of step (2) are warming up to 68 DEG C,
Under nitrogen atmosphere, the PTMEG in step (1) is added dropwise in isocyanate solution (speed of dropwise addition is 22 drops/min), drop
After adding, continue to react 2.5h, obtain homemade base polyurethane prepolymer for use as；
(4) at nitrogen atmosphere and 68 DEG C, 4 parts by weight stabilizer B8404 and 40 parts by weight rosin resins are added 90
In the homemade base polyurethane prepolymer for use as of parts by weight step (3), stirring 2h (rotating speed of stirring is 460r/min) is uniformly dispersed
System；
(5) step (4) is cooled to 33 DEG C, adds the normal butane of 150 parts by weight and the industrial 1000 mesh titanium of 50 parts by weight
White powder, stirring 40min (rotating speed of stirring is 400r/min), obtains environment-friendly polyurethane honeycomb adhesive.
The environmental protection filling polyurethane cellular adhesiveness 3879mPas, aluminium sheet adhesion strength 1.6Mpa, shear strength
1.0Mpa, expansion ratio 13, burn B2 grades of grade, surface drying hardening time 145min.
The above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not to the present invention
Embodiment restriction.For those of ordinary skill in the field, it can also make on the basis of the above description
Other various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.It is all the present invention
Any modifications, equivalent substitutions and improvements made within spirit and principle etc., should be included in the protection of the claims in the present invention
Within the scope of.
Claims (8)
1. polyurethane cellular glue is used in one kind electrolysis door filling, it is characterised in that：Prepared by the following component counted by weight and
Into：
The self-control base polyurethane prepolymer for use as, which is prepared by the following method, to be obtained：
In nitrogen atmosphere, in 65~75 DEG C, PPG is instilled into many isocyanides of the polyphenyl polymethylene containing catalyst
In acid esters solution, completion of dropping continues to react 2.5~3.5h, obtains making base polyurethane prepolymer for use as by oneself；
The weight ratio of the PPG and polyphenyl polymethylene polyisocyanates is (30~60)：(15~30)；
The PPG is one kind of Polyoxyethylene glycol or trimethylolpropane-propylene oxide polyethers；The polyoxy
The hydroxyl value for changing ethylene glycol is 37~61mgKOH/g, the hydroxyl value of the trimethylolpropane-propylene oxide polyethers for 42~
112mgKOH/g；
NCO mass fractions are 30~33% in the polyphenyl polymethylene polyisocyanates；
The tackifying resin is one kind in Petropols, terpene resin, coumarone indene resin or rosin resin.
2. polyurethane cellular glue is used in the filling of electrolysis door according to claim 1, it is characterised in that：
The polyphenyl polymethylene polyisocyanates solution is that polyphenyl polymethylene polyisocyanates are dissolved in organic solvent system
It is standby to obtain；The weight ratio of the polyphenyl polymethylene polyisocyanates and organic solvent is (15~30)：(15~40)；
The weight ratio of the catalyst and polyphenyl polymethylene polyisocyanates is (0.03~0.07)：(15~30).
3. polyurethane cellular glue is used in the filling of electrolysis door according to claim 1, it is characterised in that：
The catalyst be triethylenediamine, double (dimethyl amido ethyl) ethers, dimethyl cyclohexyl amine, dimethylethanolamine,
In double (diimino propyl group) isopropanolamine, N-ethylmorpholine, dibutyl tin laurate or the stannous octoates of N, N- it is a kind of with
On；
The organic solvent is ethyl acetate, propyl acetate, MEK, methyl isopropyl Ketone, ethylene glycol monoethyl ether, ethylene glycol list
Propyl ether, toluene or dimethylbenzene more than one.
4. polyurethane cellular glue is used in the filling of electrolysis door according to claim 1, it is characterised in that：The rate of addition be 20~
30 drops/min；
The PPG is using being preceding heated to 120~140 DEG C, 60~80min of insulation reaction.
5. polyurethane cellular glue is used in the filling of electrolysis door according to claim 1, it is characterised in that：The foam stabiliser is steady
Determine agent B8404, B8863Z, B8454, Silbk 9000, Silbk 9020 or Silbk 9204 one kind；
The foaming agent is more than one of pentamethylene, pentane, isopentane, iso-butane, normal butane or dichloromethane.
6. polyurethane cellular glue is used in the filling of electrolysis door according to claim 1, it is characterised in that：The active filler is industry
The mesh calcium carbonate of lightweight 325, industrial 1000 mesh kaolin, industrial 2000 mesh wollastonite in powder, the industrial fine and smooth stone flour of 350 mesh, industry 400
Mesh muscovite, industrial 1000 mesh titanium dioxide, industrial 400 mesh blanc fixe or industrial 1000 mesh carbon black more than one.
7. according to the preparation method of any one of the claim 1~6 electrolysis door filling polyurethane cellular glue, its feature exists
In：Specifically include following steps：
(1) under the atmosphere of nitrogen, in 65~75 DEG C, foam stabiliser and tackifying resin are added into self-control base polyurethane prepolymer for use as
In, 1~2h is stirred, finely dispersed system is obtained；
(2) system in step (1) is cooled to 30~40 DEG C, adds foaming agent and active filler, continue to stir 30~
40min, obtains polyurethane cellular glue.
8. electrolysis door fills the preparation method with polyurethane cellular glue according to claim 7, it is characterised in that：Step (1)
Described in the rotating speed that stirs be 300~500r/min；The rotating speed stirred described in step (2) is 400~600r/min.
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|---|---|---|---|---|
| CN106380827A (en) * | 2016-09-23 | 2017-02-08 | 桐乡波力科技复材用品有限公司 | Gel red rubber for stroke bat |
| CN109456462A (en) * | 2018-10-29 | 2019-03-12 | 中海油能源发展股份有限公司 | For the composition of polyurethane foam, polyurethane foam and preparation method and purposes |
| CN109504338B (en) * | 2018-12-05 | 2021-03-26 | 深圳市天翔科技有限公司 | Polyurethane foaming heat-conducting electronic pouring sealant and preparation method thereof |
| CN113881384B (en) * | 2021-11-12 | 2023-03-21 | 成都市红宝丽新材料科技发展有限公司 | Single-component polyurethane foaming adhesive with strong bonding capability and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1528801A (en) * | 2003-09-28 | 2004-09-15 | 上海市合成树脂研究所 | Method for preparing perfomed polymer for monocomponent polyurethane foam gule |
| WO2014040992A1 (en) * | 2012-09-11 | 2014-03-20 | Sika Technology Ag | Structural polyurethane adhesive having a low glass transition temperature |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1528801A (en) * | 2003-09-28 | 2004-09-15 | 上海市合成树脂研究所 | Method for preparing perfomed polymer for monocomponent polyurethane foam gule |
| WO2014040992A1 (en) * | 2012-09-11 | 2014-03-20 | Sika Technology Ag | Structural polyurethane adhesive having a low glass transition temperature |
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