CN104673170A - Long-opening-time primer and preparation method thereof - Google Patents
Long-opening-time primer and preparation method thereof Download PDFInfo
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- CN104673170A CN104673170A CN201510074310.2A CN201510074310A CN104673170A CN 104673170 A CN104673170 A CN 104673170A CN 201510074310 A CN201510074310 A CN 201510074310A CN 104673170 A CN104673170 A CN 104673170A
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Abstract
The invention relates to a long-opening-time primer and a preparation method thereof. The primer is matched with a single-component moisture-curing polyurethane sealant. The primer comprises the following components in percentage by mass: 15-35% of silane terminated polymer, 2-10% of bonding accelerator, 0.1-2% of stabilizing agent, 1-10% of plasticizer, 3-15% of colorant, 0.3-1.5% of dispersing agent, 0.1-2.5% of antioxidant, 0.1-2.5% of ultraviolet absorbent, 0.1-2.5% of light stabilizer and 30-70% of solvent. The primer can be used for enhancing the bonding stability of the single-component polyurethane adhesive when being used for glass assembly and elastic bonding. The system is free of isocyanate, lowers the reaction speed, prolongs the opening time of the primer, has favorable adhesion with ink glass, common primers and finish coats, and enhances the medium resistance and bonding performance of the silane terminated polymer.
Description
Technical field
The present invention relates to caking agent, especially silane coupling agent of a kind of long open hour and preparation method thereof is related to, this silane coupling agent and mono-component polyurethane caking agent support the use, use for when the windshield assembling in facilities for transport and communication manufacture and other elastic adhesives, be used for improving bonding stability on differing materials surface of mono-component polyurethane caking agent and aging after performance, make up the defect of windshield ink layer simultaneously, improve bonding ageing-resistant performance.
Background technology
Along with the requirements of transportation and communication to comfortableness and security such as automobile, rail vehicle, passenger vehicle, steamer are more and more higher, the glass in its wheel house and compartment generally adopts the method for elastic adhesive to be connected with car body to replace India-rubber strip to seal, not only overall tightness improves, and adopt bonding method, glass connects together with car body, rigidity increases, and security improves.Initial resilient glue material is thiorubber caking agent, generally two-pack or three components, mixing difficulty during use, viscosity is high, use inconvenience, smell is large in addition, does not adopt at present, current commonplace employing be single-component moisture curing polyurethane caking agent, mono-component polyurethane caking agent intensity is high, easy to use.Also have and adopt silane-terminated polyether or polyurethane material, because its tensile strength is lower than polyurethane material, is only limited to safety coefficient and requires lower occasion.
The novel process that Foreign Automobile production to start to develop the seventies with wet-solidifying single-component polyurethane caking agent and the bonding automobile wind shield glass of seal gum.What adopt at first is the U.S., and the auto vendor of the developed country such as Japan, West Europe also adopts this technique to assemble windshield one after another subsequently.Almost the passenger car of 100% adopts poly-cruel caking agent adhesive car window glass at present, and commercial car, rail vehicle also progressively adopt mono-component polyurethane adhesive technology to substitute India-rubber strip sealing.Compared with common rubber weather strip, single-component polyurethane technique for sticking has easy, that reliability is high advantage, windshield and vehicle body can be made to be combined into an entirety securely, sealing property is obviously improved, and the vehicle body that improve automobile is just overall, add conservation rate during glass breaking, the security of automobile is increased substantially.
Polyurethane material is containing the base polymer repeating carbamate (-NHCOO-) segment on macromolecular main chain, have that intensity is high, tear strength be strong, flexibility and wear resistance is good, paracentesis resistance is excellent, oil resistant and the plurality of advantages such as medium corrosion resistance is good, be widely used in the fields such as elastomerics, coating, tackiness agent or seal gum.But due to requirement high strength, high elongation at tear for elastic adhesives such as glass assemblings, so wherein flexible polyether segment ratio is high, the isocyanate content playing bonding effect is low.Low isocyanate content causes one component room temperature curing urethane caking agent to the bonding difference of glass and ink layer, generally needs corresponding agent of the supporting end to improve the bonding state with bonding plane.
Silane coupling agent uses as the pretreating agent of polyurethane adhesive sealing agent, by the use of silane coupling agent, the bonding reliability of polyurethane adhesive sealing agent to ground improved greatly.
Polyurethane adhesive sealing agent refers to a kind of polyurethane adhesive of the monocomponent moisture cure containing isocyano, wherein contains the prepolymer that polyethers or polyester polyol and polyisocyanates reaction are formed; Preferred single-component moisture curing polyurethane caking agent is TONSAN 1956 polyurethane adhesive.
Being generally used for the end agent supporting with wet-solidifying single-component polyurethane caking agent is solvent borne polyurethane system, containing isocyanic ester, there is after wet gas very high reactive behavior, self-crosslinking speed is fast, cause with the reaction times of polyurethane sealant short, open hour (remaining valid the active time) are short, and due to its moisture cure characteristics, can be shorter at hectic fever weather, this requires user in the coating of end agent and the applying glue of wet-solidifying single-component polyurethane caking agent is bonding must coordinate closely, easily adhesive failure is there is at high-temperature high humidity season, for traffic transport industry automobile, train, give to exercise during the glass assemblings such as boats and ships and bring hidden danger safely.The end agent of long open hour can give user's scheduling of production more flexibly, reduces weather to the impact of producing.
The end agent of general isocyanate systems comprises a kind of film-forming resin, isocyanate prepolymer and catalyzer, filler, dispersion agent, UV light absorber and photostabilizer, solvent etc.Its film-forming resin refers to the thermoplasticity organic resin good to sticking power such as metal and ink glass, comprising: polyester, thermoplastic propene's acid esters, epoxy resin etc.
In order to reach comparatively ideal sticking power, the existing silane coupling agent supporting with polyurethane adhesive sealing agent generally also will add the resin of high isocyanate content, improves the bonding force with wet-solidifying single-component polyurethane caking agent; Because isocyanic ester is easy and water in air is reacted, so short based on the end agent general open hour of the resin of high isocyanate content.
Simultaneously for improving end agent ageing-resistant performance, silane coupling agent generally adopts the resin of the aliphatic isocyanates of ageing-resistant performance excellence as adhesion promoter resin.Simultaneously in order to improve further in glass and the bond failure state of the material surface such as ink layer, automobile finish thereof and the stability under different aging condition, general silane coupling agent also can add silane coupling agent and improve stability to aging; Silane coupling agent also contains black pigment as the important means improving light aging resisting, generally with the colour black that weather resistance is good; For improving the toughness after silane coupling agent film forming, softening agent generally also can be added to improve the toughness of silane coupling agent.For improving the ageing-resistant performance of silane coupling agent film, affecting the adhesiveproperties of polyurethane adhesive after avoiding photoaging, also can add uv-absorbing agent and photostabilizer.Existing silane coupling agent formula system belongs to moisture curing system, needs to add catalyzer to improve moisture curing speed of response, and conventional catalyzer comprises organic tin, tertiary amines etc.; In order to improve the mechanical property after silane coupling agent film forming further, needing to add the filler compatible with polyurethane system, requiring low moisture content, generally will through surface treatment.In order to ensure that in silane coupling agent, pigment and filler are disperseed fully, also add dispersion agent in system; In order to ensure the heatproof oxidation performance energy of silane coupling agent, prevent oxidative degradation, the use of oxidation inhibitor is necessary, and oxidation inhibitor can use Hinered phenols free radical chain encapsulant, or thioesters and phosphorous acid esters peroxide decomposer.In order to adjusting viscosity, convenient brushing, must use solvent, require that solvent is the compound of the not reactive hydrogen such as hydroxyl, amino, require that the content of moisture is lower than 500ppm, is preferably lower than 200ppm.
Summary of the invention
The object of this invention is to provide the base polymer of a kind of Silante terminated aliphatic isocyanates performed polymer as long operating time primary coat, synthesize a kind of adhesion promoters simultaneously, improve the bonding force of end agent and mono-component polyurethane caking agent, improve medium-resistance and the adhesiveproperties of silane-terminated polymer.
In order to realize object of the present invention, following technical scheme is proposed:
The silane coupling agent of long open hour, described silane coupling agent and single-component moisture curing polyurethane sealing agent support the use, and described silane coupling agent comprises following component by mass percentage:
Silane-terminated polymer 15%-35%;
Adhesion promoters 2%-10%
Stablizer 0.1%-2%;
Softening agent 1%-10%;
Tinting material, 3%-15%;
Dispersion agent, 0.3%-1.5%.；
Oxidation inhibitor; 0.1%-2.5%;
Uv-absorbing agent 0.1%-2.5%
Photostabilizer 0.1%-2.5%;
Solvent 30%-70%;
Described silane-terminated polymer is Silante terminated aliphatic isocyanates performed polymer;
Described adhesion promoters is the silane coupling agent of synthesis;
Described stablizer is silane coupling agent, comprises vinyltrimethoxy silane, vinyltriethoxysilane, methyltrimethoxy silane, methyltrimethoxy silane or tetraethoxy;
Described softening agent is phthalate, alkyl sulfonates, tritolyl phosphate, clorafin etc.As dibutyl phthalate, diisononyl phthalate, dioctyl phthalate (DOP) or Di Iso Decyl Phthalate;
Described tinting material is colour black, comprises acidity and alkaline carbon black, and the oil-absorption(number) of described colour black is greater than 50g/100 g DBP;
Described dispersion agent contains pigment affinity groups polymer copolymerization body, the Disperbyk 180 of such as BYK company, Disperbyk 182, Disperbyk 2000;
The described outer absorption agent of described purple is salicylate class, benzophenone class, benzotriazole category, group-substituted acrylonitrile or triazines, UV-3638, UV-2337, UV-5365, UV-5411, UV-24, UV-531, UV-9, UV-1084, UV-1164 of such as Qing Te company or Ciba product Tinuvin P, Tinuvin 1130, Tinuvin 99-2, Tinuvin 928, Tinuvin 326, Tinuvin 327, Tinuvin 329;
Described photostabilizer is hindered amine light stabilizer, special Products UV-3346, UV-3529, UV-3581, UV-3853, UV-3853S, the UV-2908 of such as cyanogen and Ciba product Tinuvin 770, Tinuvin 292, Tinuvin 5050, Tinuvin 5055, Tinuvin 5151, Tinuvin 5060;
Described oxidation inhibitor is Hinered phenols antioxidant, such as Ciba product: Irganox 245, Irganox 1010, Irganox 1035 or Irganox 1076;
Described solvent comprises ethyl acetate, propyl acetate, butylacetate, toluene, dimethylbenzene or propylene glycol monomethyl ether acetate, described solvent point content lower than 500ppm, preferably lower than 200 ppm.
Described silane-terminated polymer passes through polyol compound and the reaction of excessive aliphatic isocyanates compound of hydroxyl, usual OH/NCO=1/1.5 ~ 1/5, then by α or γ parahelium propyl group or mercapto hydroxypropyl methyl trimethoxy Silante terminated, its main component is:
(1) the polyol compound of functionality 2 or more;
(2) aliphatic isocyanates compound or oligopolymer;
(3) α or γ parahelium propyl group or mercapto propyl silane end-blocking are as end-capping reagent;
(4) organotin is as catalysts.
Described polyol compound comprises: polyether glycol, as polyoxypropylene polyol; Modified polyether polylol; Polyester polyol, as condensation polyester polyol, open loop polyester polyol, polycarbonate polyol; Polyacrylate polyol; Polyolefin polyhydric alcohol; The epoxy resin of grease polyvalent alcohol or hydroxyl.
Described aliphatic isocyanates compound comprises 1, hexamethylene-diisocyanate, dicyclohexyl methane diisocyanate, isophorone diisocyanate, Methylcyclohexyl diisocyanate, Isosorbide-5-Nitrae-cyclohexyl diisocyanate, cyclohexanedimethyleterephthalate vulcabond and trimethylammonium-1,6-hexamethylene diisocyanate; Described oligopolymer comprises trimerization hexamethylene diisocyanate, hexamethylene diisocyanate biuret and trimerization isophorone diisocyanate.
Described silane coupling agent comprises α-aminomethyl dimethoxysilane, γ-aminopropyl dimethoxy silane, α-thiopurine methyltransferase methyl dimethoxysilane, γ-mercapto hydroxypropyl methyl dimethoxysilane, phenylamino propyldimethoxy-silane; γ-aminopropyltrimethoxysilane, α-thiopurine methyltransferase Trimethoxy silane, γ-mercaptopropyl trimethoxysilane or phenylamino propyl trimethoxy silicane.
Described organotin catalysts mainly comprises: dibutyltin bisacetate, dibutyltin dilaurate, stannous octoate or dibutyltin oxide.
The silane coupling agent of the described synthesis as adhesion promoters is prepared by the epoxy reaction in the amino of aminosilane and epoxy radicals silicone hydride, and its main component is:
(1) primaryamino-silane or two aminosilane;
(2) epoxy radicals silicone hydride.
Described primaryamino-silane comprises: α-aminomethyl dimethoxysilane, γ-aminopropyl dimethoxy silane, γ-aminopropyltrimethoxysilane, α-aminomethyl diethoxy silane, γ-aminopropyl diethoxy silane or γ-aminopropyl three second methoxy silane; Described pair of aminosilane comprises N-(2-aminoethyl)-3-aminopropyltriethoxy dimethoxysilane, N-(2-aminoethyl)-3-aminopropyl trimethoxysilane, N-(2-aminoethyl)-3-aminopropyltriethoxy diethoxy silane or N-(2-aminoethyl)-3-aminopropyl triethoxysilane.
Described epoxy radicals silicone hydride comprises: (3-epoxypropoxy) Trimethoxy silane, (3-epoxypropoxy) methyl dimethoxysilane, (3-epoxypropoxy) triethoxyl silane, (3-epoxypropoxy) methyldiethoxysilane, 2-(3,4-epoxycyclohexyl) ethyl trimethoxy silane or 2-(3,4-epoxycyclohexyl) ethyl triethoxysilane.
The present invention also proposes the method for the silane coupling agent of the long open hour described in preparation, wherein, the preparation method of described Silante terminated aliphatic isocyanates performed polymer is: at room temperature in stirring tank, order adds polyether glycol, aliphatic isocyanates compound, catalyzer and to be incubated to mixture isocyano-content after being heated to 40 DEG C-60 DEG C and to stablize, then active group Trimethoxy silane is being added as end-capping reagent, continuing insulation reaction to isocyanate content is 0, can obtain Silante terminated aliphatic isocyanates performed polymer;
The preparation method of described adhesion promoters is: at room temperature in stirring tank, order adds aminosilane, epoxy silane, stirs, and is incubated after being then heated to 70 DEG C-90 DEG C under nitrogen protection, and reaction, to ammonia value stabilization wherein, can obtain adhesion promoters;
Above-mentioned Silante terminated aliphatic isocyanates performed polymer, adhesion promoters, stablizer, softening agent, colour black and dispersion agent, uv-absorbing agent, photostabilizer, oxidation inhibitor and organotin catalysts are added in grinding plant; under drying nitrogen protection, grinding 3 ~ 4 hours, is ground and obtains the silane coupling agent of long open hour.
The silane coupling agent of long open hour of the present invention comprises a kind of Silante terminated resin, synthesis a kind of adhesion promoters, catalyzer, filler, UV light absorber and stablizer etc., obtain the glass cementation silane coupling agent of a kind of long operating time of monocomponent moisture cure, when can be used for glass assembling and elastic adhesive, improve the bonding stability of mono-component polyurethane caking agent.Wherein, by synthetic fat race Isocyanate prepolymers body, and by γ, amino-silane terminated or γ sulfydryl oxosilane carries out whole end-blocking to Isocyanate prepolymers body, system is not containing isocyanic ester, reduce speed of response, extend the open hour of end agent, and with ink glass and general priming paint and finish paint, all there is good sticking power; Simultaneously by a kind of adhesion promoters of synthesis, improve the bonding force of end agent and mono-component polyurethane caking agent, improve medium-resistance and the adhesiveproperties of silane-terminated polymer.It is long that end agent based on this full terminated prepolymer and adhesion promoters has the open hour, with the feature that glass and ink layer, acrylic acid-polyurethane finish paint are bonding.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, the present invention is described in more detail.
Embodiment
Silante terminated aliphatic isocyanates performed polymer is prepared as follows:
Polyoxytrimethylene trivalent alcohol 350 grams (molecular-weight average 350) joins in the reactor with mechanical stirring, nitrogen protection and heating unit.Be heated to 50 DEG C under nitrogen protection; then 1512 gram 1 is added; hexamethylene-diisocyanate biuret; stir; add 1 gram of dibutyltin dilaurate; be incubated 70 DEG C and stir 4h, then add mercaptopropyl trimethoxysilane 1176g, continue insulation 50 DEG C reaction 4h and namely obtain Silante terminated aliphatic isocyanates performed polymer.
Adhesion promoters is prepared as follows:
N-(2-aminoethyl)-3-aminopropyl triethoxysilane 269 grams joins in the reactor with mechanical stirring, nitrogen protection and heating unit.Be heated to 80 DEG C under nitrogen protection, then add (3-epoxypropoxy) Trimethoxy silane 236 grams, stir, continue insulation 80 DEG C reaction 4h and obtain adhesion promoters.
The preparation method of long operating time silane coupling agent is:
At room temperature add Silante terminated aliphatic isocyanates performed polymer 300 grams to order in grinding still, adhesion promoters 50 grams, stablizer vinyltrimethoxy silane 10g, plasticizer phthalic acid two isodecyl ester 50 grams, colour black 60 grams, Disperbyk 180 dispersion agent 6 grams, , Tinuvin 327 UV light absorber 3 grams, Tinuvin 770 ultra-violet stabilizer 3 grams, after catalyzer dibutyltin dilaurate 5 grams, mix under vacuum protection, then dried butylacetate 513 grams is added, be ground under nitrogen protection outward appearance fineness qualified after i.e. obtained silane coupling agent.
comparative example
Aliphatic isocyanates performed polymer is prepared as follows:
Polyoxytrimethylene trivalent alcohol 350 grams (molecular-weight average 350) joins in the reactor with mechanical stirring, nitrogen protection and heating unit.Be heated to 50 DEG C under nitrogen protection, then add 1512 grams of hexamethylene diisocyanate biurets, stir, add 1 gram of dibutyltin dilaurate, be incubated 70 DEG C of stirring 4h and namely obtain aliphatic isocyanates performed polymer.
The preparation method of silane coupling agent is:
At room temperature add thermoplastic acrylic resin 50 grams to order in grinding still, aliphatic isocyanates performed polymer 250 grams, adhesion promoters 50 grams, stablizer vinyltrimethoxy silane 10g, plasticizer phthalic acid two isodecyl ester 50 grams, colour black 60 grams, Disperbyk 180 dispersion agent 6 grams, , Tinuvin 327 UV light absorber 3 grams, Tinuvin 770 ultra-violet stabilizer 3 grams, after catalyzer dibutyltin dilaurate 5 grams, mix under vacuum protection, then dried butylacetate 513 grams is added, be ground under nitrogen protection outward appearance fineness qualified after i.e. obtained silane coupling agent.
Prepared by sample:
The toughened glass model choosing band ink layer conventional in automobile production and the finish paint steel plate obtained according to vehicle coating process, use special activation clean-out system clean activation ink layer and finish paint surface, coolly put 15 minutes, then silane coupling agent obtained in embodiment and comparative example is applied respectively, after placing the different time, single-component moisture curing polyurethane caking agent is extruded in even strip-shaped on silane coupling agent surface, after following condition solidification, the method for lancinating is used to carry out the test of cohesive failure rate.
In table 1 embodiment and comparative example, silane coupling agent contrasted in the ink glass surface open hour
In table 2 embodiment and comparative example, silane coupling agent contrasted in the finish paint surface open time
Although the present invention is own with preferred embodiment openly as above, they are not that the content that protection scope of the present invention should define with the claims of the application is as the criterion for limiting the present invention.Anyly have the knack of the art person, without departing from the spirit and scope of the present invention, the various change done or equivalently to replace, all should belong to protection scope of the present invention.
Claims (10)
1. the silane coupling agent of long open hour, described silane coupling agent and single-component moisture curing polyurethane sealing agent support the use, and it is characterized in that, described silane coupling agent comprises following component by mass percentage:
Silane-terminated polymer 15%-35%;
Adhesion promoters 2%-10%
Stablizer 0.1%-2%;
Softening agent 1%-10%;
Tinting material, 3%-15%;
Dispersion agent, 0.3%-1.5%;
Oxidation inhibitor; 0.1%-2.5%;
Uv-absorbing agent 0.1%-2.5%
Photostabilizer 0.1%-2.5%;
Solvent 30%-70%;
Described silane-terminated polymer is Silante terminated aliphatic isocyanates performed polymer;
Described adhesion promoters is the silane coupling agent of synthesis;
Described stablizer is silane coupling agent, comprises vinyltrimethoxy silane, vinyltriethoxysilane, methyltrimethoxy silane, methyltrimethoxy silane or tetraethoxy;
Described softening agent is phthalate, alkyl sulfonates, tritolyl phosphate, clorafin etc.;
As dibutyl phthalate, diisononyl phthalate, dioctyl phthalate (DOP) or Di Iso Decyl Phthalate;
Described tinting material is colour black, comprises acidity and alkaline carbon black, and the oil-absorption(number) of described colour black is greater than 50g/100g DBP;
Described dispersion agent is containing pigment affinity groups polymer copolymerization body;
The described outer absorption agent of described purple comprises salicylate class, benzophenone class, benzotriazole category, group-substituted acrylonitrile or triazines;
Described photostabilizer is hindered amine light stabilizer;
Described oxidation inhibitor is Hinered phenols antioxidant;
Described solvent comprises ethyl acetate, propyl acetate, butylacetate, toluene, dimethylbenzene or propylene glycol monomethyl ether acetate, described solvent point content lower than 500ppm, preferably lower than 200 ppm.
2. the silane coupling agent of long open hour according to claim 1, it is characterized in that, described silane-terminated polymer passes through polyol compound and the reaction of excessive aliphatic isocyanates compound of hydroxyl, usual OH/NCO=1/1.5 ~ 1/5, then by α or γ parahelium propyl group or mercapto hydroxypropyl methyl trimethoxy Silante terminated, its main component is:
(1) the polyol compound of functionality 2 or more;
(2) aliphatic isocyanates compound or oligopolymer;
(3) α or γ parahelium propyl group or mercapto propyl silane end-blocking are as end-capping reagent;
(4) organotin is as catalysts.
3. the silane coupling agent of long open hour according to claim 2, is characterized in that, described polyol compound comprises: polyether glycol, as polyoxypropylene polyol; Modified polyether polylol; Polyester polyol, as condensation polyester polyol, open loop polyester polyol, polycarbonate polyol; Polyacrylate polyol; Polyolefin polyhydric alcohol; The epoxy resin of grease polyvalent alcohol or hydroxyl.
4. the silane coupling agent of long open hour according to claim 2, it is characterized in that, described aliphatic isocyanates compound comprises hexamethylene diisocyanate, dicyclohexyl methane diisocyanate, isophorone diisocyanate, Methylcyclohexyl diisocyanate, Isosorbide-5-Nitrae-cyclohexyl diisocyanate, cyclohexanedimethyleterephthalate vulcabond and trimethylammonium-1,6-hexamethylene diisocyanate; Described oligopolymer comprises trimerization hexamethylene diisocyanate, hexamethylene diisocyanate biuret and trimerization isophorone diisocyanate.
5. the silane coupling agent of long open hour according to claim 2, it is characterized in that, described silane coupling agent comprises α-aminomethyl dimethoxysilane, γ-aminopropyl dimethoxy silane, α-thiopurine methyltransferase methyl dimethoxysilane, γ-mercapto hydroxypropyl methyl dimethoxysilane, phenylamino propyldimethoxy-silane; γ-aminopropyltrimethoxysilane, α-thiopurine methyltransferase Trimethoxy silane, γ-mercaptopropyl trimethoxysilane or phenylamino propyl trimethoxy silicane.
6. the silane coupling agent of long open hour according to claim 2, is characterized in that, described organotin catalysts mainly comprises: dibutyltin bisacetate, dibutyltin dilaurate, stannous octoate or dibutyltin oxide.
7. according to the silane coupling agent of the long open hour of claim 1-6 described in one of them, it is characterized in that, the silane coupling agent of the described synthesis as adhesion promoters is prepared by the epoxy reaction in the amino of aminosilane and epoxy radicals silicone hydride, and its main component is:
(1) primaryamino-silane or two aminosilane;
(2) epoxy radicals silicone hydride.
8. the silane coupling agent of long open hour according to claim 7, it is characterized in that, described primaryamino-silane comprises: α-aminomethyl dimethoxysilane, γ-aminopropyl dimethoxy silane, γ-aminopropyltrimethoxysilane, α-aminomethyl diethoxy silane, γ-aminopropyl diethoxy silane or γ-aminopropyl three second methoxy silane; Described pair of aminosilane comprises N-(2-aminoethyl)-3-aminopropyltriethoxy dimethoxysilane, N-(2-aminoethyl)-3-aminopropyl trimethoxysilane, N-(2-aminoethyl)-3-aminopropyltriethoxy diethoxy silane or N-(2-aminoethyl)-3-aminopropyl triethoxysilane.
9. the silane coupling agent of long open hour according to claim 1, it is characterized in that, described epoxy radicals silicone hydride comprises: (3-epoxypropoxy) Trimethoxy silane, (3-epoxypropoxy) methyl dimethoxysilane, (3-epoxypropoxy) triethoxyl silane, (3-epoxypropoxy) methyldiethoxysilane, 2-(3,4-epoxycyclohexyl) ethyl trimethoxy silane or 2-(3,4-epoxycyclohexyl) ethyl triethoxysilane.
10. preparation is as the method for the silane coupling agent of the long open hour of claim 1-9 as described in one of them, it is characterized in that,
The preparation method of described Silante terminated aliphatic isocyanates performed polymer is: at room temperature in stirring tank, order adds polyether glycol, aliphatic isocyanates compound, catalyzer and to be incubated to mixture isocyano-content after being heated to 40 DEG C-60 DEG C and to stablize, then active group Trimethoxy silane is being added as end-capping reagent, continuing insulation reaction to isocyanate content is 0, can obtain Silante terminated aliphatic isocyanates performed polymer;
The preparation method of described adhesion promoters is: at room temperature in stirring tank, order adds aminosilane, epoxy silane, stirs, and is incubated after being then heated to 70 DEG C-90 DEG C under nitrogen protection, and reaction, to ammonia value stabilization wherein, can obtain adhesion promoters;
Above-mentioned Silante terminated aliphatic isocyanates performed polymer, adhesion promoters, stablizer, softening agent, colour black and dispersion agent, uv-absorbing agent, photostabilizer, oxidation inhibitor and organotin catalysts are added in grinding plant; under drying nitrogen protection, grinding 3 ~ 4 hours, is ground and obtains the silane coupling agent of long open hour.
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Application publication date: 20150603 |