CN104099059B - A kind of silicone sealant for side windshield of automobile and preparation method thereof - Google Patents
A kind of silicone sealant for side windshield of automobile and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of silicone sealant preparation method for side windshield of automobile.The method comprises the following steps: 1) join in kneader by 100 weight part α, alpha, omega-dihydroxy polysiloxane, 10-60 weight part KH550 coupling agent and sodium stearate improved silica, and 110 ~ 140 DEG C, mixing dehydration 30 ~ 360 minutes under vacuum tightness 0.06 ~ 0.1MPa, cooling obtains base-material; 2) methyl-silicone oil of 0.5-2 parts by weight of crosslinking agent, 0.1-0.5 part by weight of catalyst, 5-20 weight part is joined in high force dispersion machine successively, mix with above-mentioned base-material, under room temperature, vacuum tightness is 0.06 ~ 0.1MPa, and rotating speed 600rpm mixing obtains silicone sealant in 30 ~ 120 minutes.This seal gum is easy to use, good with various substrate bonding, have good weathering resistance, quick solidifying.
Description
Technical field
The present invention relates to a kind of silicone sealant for side windshield of automobile and preparation method thereof.
Background technology
The installation of automobile wind shield glass, equipment, traditional method adopts mechanical bar formula installation method, and this installation method needs a lot of labor forces and time of setting-up, also can bring a lot of troubles during maintenance simultaneously.
In earlier 1960s, General Motors Overseas Corporation (GM) first changes the mechanical bar formula installation method of its car windshield, directly windshield is bonded on car body with multi-component polysulfide sealant (PS), both can save time, money and labor force, can increase again the intensity of car body.The each large automobile manufacturing enterprise of other companies of the U.S. and the world also imitates GM and adopts SSG method to install windshield, now nearly all superior automobile all makes in this way, and all kinds of luxury bus its car body covering except windshield also abandons traditional riveting and uses the method for structural sealant glazing.
In prior art, the seal gum for side windshield of automobile needs very strong cohesive force, and major part adopts two component, to strengthen cohesive force.But in the maintenance industry of automobile, the automobile of nearly 20% is had to need because of various reasons to change windshield according to statistics every year, adopt two component can bring very large inconvenience, this area needs a kind of easy to use, good with various substrate bonding, have good weathering resistance, quick-setting seal gum product.
Summary of the invention
The object of this invention is to provide a kind of easy to use, good with various substrate bonding, there is good weathering resistance, quick-setting seal gum product.
" silicone sealant ", " silicone adhesive " and " silicon sealant " are used interchangeably in this application.
For achieving the above object, a kind of silicone sealant for side windshield of automobile, with parts by weight, comprises following component:
α, alpha, omega-dihydroxy polysiloxane 100 weight part
Improved silica 10-60 weight part
Linking agent 0.5-2 weight part
Catalyzer 0.1-0.5 weight part
Softening agent 5-20 weight part
Described α, alpha, omega-dihydroxy polysiloxane, its viscosity is 5000cp ~ 500000cp, and between different viscosity, need rational Match to use, its ratio is 5000cp ~ 30000cp: 30000cp ~ 500000cp=1: (0.1 ~ 20), to increase its polymerization degree to put forward intensity and the hardness of seal gum.
Described silicon-dioxide can be aerosil and/or precipitated silica.Wherein aerosil can be inactive, also can be through surface treatment agent process such as organochlorosilane, silane coupling agent, alcohol compound, aminated compounds, stearate.
Preferably, described coupling agent is the organoalkoxysilane that active function groups (sulfydryl, epoxy group(ing), acyloxy, amino etc.) replaces, specifically can be aminopropyl trimethoxysilane, mercapto propyl group three second/methoxy silane, γ-(2.3 epoxy third oxygen) propyl trimethoxy silicane, at least one in γ-(methacryloxypropyl) propyl trimethoxy silicane etc.
Preferably, described stearate is selected from one or more in sodium stearate, Magnesium Stearate, calcium stearate, Zinic stearas, potassium stearate.
Preferably, silane coupling agent and/or stearate process silicon-dioxide is selected.
More preferably, described silicon-dioxide specific surface area is (60 ~ 195) m2/g, and different surfaces needs rational Match between amassing, its weight ratio is (60 ~ 150) m2/g: (150 ~ 195) m2/g=(1 ~ 10): (10 ~ 1).
In general, described linking agent is general formula R '-Si (R ")
3compound,
Wherein R ' is alkyl, such as C1-C10 alkyl, as methyl, ethyl, propyl group, butyl, amyl group, 2-ethylhexyl, octyl group, decyl, thiazolinyl, such as C2-C6 alkenyl, as vinyl, allyl group, hexenyl, or cycloalkyl, such as C3-C8 cycloalkyl, as cyclopentyl, cyclohexyl and suberyl, aryl, such as C6-C8 aromatic hydrocarbyl, as phenyl, tolyl and xylyl; R " be alkoxyl group, such as C1-C6 alkoxyl group, as methoxyl group, oxyethyl group, propoxy-, butoxy, pentyloxy, aminooxy, C1-C4 acyloxy, C2-C5 alkene oxygen base group or C1-C5 alkyl ketone oximido.
The present invention's " alkyl " used refers to the completely saturated alkyl of straight or branched, can be C1-C10 alkyl, preferred C1-C8 alkyl, more preferably C1-C7 alkyl, particularly preferably C1-C6 alkyl, most preferably C1-C6 alkyl.Example includes but not limited to methyl, ethyl, propyl group, normal-butyl, isobutyl-etc.
The present invention's " thiazolinyl " used refers to the alkyl comprising one or more double bond in side chain or straight chain hydrocarbon chain, can be C2-C6 thiazolinyl, preferred C2-C5 thiazolinyl, more preferably C2-C4 thiazolinyl, particularly preferably C2-C3 thiazolinyl, most preferably vinyl.Example includes but not limited to vinyl, allyl group, 1-propenyl, 2-propenyl, hexenyl etc.
The present invention's " cycloalkyl " used refers to completely saturated hydrocarbon ring, can be the cycloalkyl of the cycloalkyl of C3-C8, preferred C4-C7.The example of group of naphthene base includes but not limited to cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl etc.
The present invention's " alkoxyl group " used refers to the alkoxyl group of side chain or straight chain.Can be C1-C6 alkoxyl group, preferred C1-C4 alkoxyl group, example includes but not limited to methoxyl group, oxyethyl group, propoxy-, butoxy, isobutoxy, pentyloxy etc.
Described linking agent, linking agent is many alkoxyl silicones alkanes preferably, such as methyltrimethoxy silane, vinyltrimethoxy silane, Union carbide A-162, vinyltriethoxysilane, tetramethoxy-silicane, tetraethoxysilane, tetrapropoxysilane, four butoxy silanes, phenyltrimethoxysila,e or phenyl triethoxysilane, with ketoximinosilanes class, such as methyl tributanoximo silane, vinyl tributyl ketoximyl silane, methyl three (mibk oximido) silane, vinyl three (mibk oximido) silane, methyl tri acetylacetonate oximino silane, phenyl tributanoximo silane, phenyl trimethicone isobutyl ketone oximino silane, phenyl tri acetylacetonate oximino silane, four Diacetylmonoxime base silanes or tetramethyl-isobutyl ketone oximino silane.
Described linking agent is more preferably ketoximinosilanes class, particularly preferably is the one or two or more be selected from methyl tributanoximo silane, vinyl tributyl ketoximyl silane, methyl three (mibk oximido) silane, vinyl three (mibk oximido) silane, methyl tri acetylacetonate oximino silane, phenyl tributanoximo silane, phenyl trimethicone isobutyl ketone oximino silane, phenyl tri acetylacetonate oximino silane, four Diacetylmonoxime base silanes or tetramethyl-isobutyl ketone oximino silane.
Preferably, described catalyzer is organo-tin compound.Further preferably, described organo-tin compound is selected from dibutyl tin laurate, tin dilaurate diamyl tin, tin dilaurate dihexyl tin, tin dilaurate dioctyl tin, dibutyltin diacetate, two acetic acid diamyl tin, two acetic acid dihexyl tin, two acetic acid dioctyl tins, dimethoxy dibutyl tin, dimethoxy diamyl tin, dimethoxy dihexyl tin, dimethoxy dioctyl tin, diethoxy dibutyl tin, diethoxy diamyl tin, diethoxy dihexyl tin, diethoxy dioctyl tin, dipropoxy dibutyl tin, dipropoxy diamyl tin, dipropoxy dihexyl tin, dipropoxy dioctyl tin, dibutoxy dibutyl tin, dibutoxy diamyl tin, dibutoxy dihexyl tin, dibutoxy dioctyl tin, dibutyl tin diacetyl acetonate, any one in stannous octoate, two kinds or more of.
Organo-tin compound be more preferably in dibutyl tin laurate, dibutyltin diacetate, tin dilaurate dioctyl tin any one.
Described its viscosity of hydroxy-end capped polydimethylsiloxane is 5000cp ~ 500000cp, and between different viscosity, need rational Match to use, its ratio is 5000cp ~ 30000cp: 30000cp ~ 500000cp=1: (0.1 ~ 20), to increase its polymerization degree to put forward intensity and the hardness of seal gum.
Described softening agent is alkyl-blocked polydimethylsiloxane, and its viscosity is 50cp ~ 5000cp.Be specifically as follows methyl-silicone oil, ethyl silicon oil, phenyl silicone oil, methyl phenyl silicone oil etc.
In addition, the described silicone sealant for side windshield of automobile, also comprises fire retardant.
As for inorganic fire-retarded compound of the present invention, this inorganic fire-retarded compound at high temperature has good heat absorption capacity, simultaneously non-combustible, play fp effect, particularly, for hydroxide form inorganic combustion inhibitor, oxide type inorganic combustion inhibitor, boric acid salt form fire retardant, stannic acid salt form fire retardant, antimony type fire retardant, they can be used alone or use with two or more the array configurations of planting.
Further, as hydroxide form fire retardant, the example that can enumerate comprises aluminium hydroxide, magnesium hydroxide, magnesium basic carbonate, ventilation breather, hydrotalcite type complex metal hydroxide, the product of hydrotalcite type complex metal hydroxide drying.
Further, as oxide type fire retardant, the example that can enumerate, comprises product, the rare earth oxide of aluminum oxide, magnesium oxide, cupric oxide, Red copper oxide, ferric oxide, zinc oxide, stannic oxide, the calcining of hydrotalcite type complex metal hydroxide.
Further, fire-retardant as boric acid salt form, the example that can enumerate comprises zinc borate, barium borate, lime borate, zinc metaborate, barium metaborate.
Further, as stannic acid type fire retardant, the example that can enumerate comprises zinc, barium stannate, alkali formula zinc, alkali formula barium stannate.
Further, as antimony type fire retardant, the example that can enumerate, comprising: ANTIMONY TRIOXIDE SB 203 99.8 PCT, antimony pentaoxide, sodium antimonate, potassium antimonate.
As flame retardant inorganic compound, preferably, hydroxide form fire retardant of the present invention, or the oxide type fire retardant that hydroxide form fire retardant is arranged in pairs or groups a small amount of.
Preferably, inorganic combustion inhibitor of the present invention selects the mixture of magnesium hydroxide or aluminium hydroxide or aluminium hydroxide and cerium oxide.
In order to better compatible with material of main part of the present invention, also in order to inorganic combustion inhibitor can be good at dispersion, effectively save the energy being in preparation, the average particulate diameter of inorganic combustion inhibitor of the present invention between 0.05-20 μm, preferred 0.1-20 μm.
Further, in order to obtain better dispersiveness, silicone oil or silane coupling agent or tensio-active agent process inorganic combustion inhibitor also can be used.
More preferably, the consumption of the inorganic combustion inhibitor of the silicone sealant for side windshield of automobile of the present invention is the 30%-200% of α, alpha, omega-dihydroxy polysiloxane quality.Again more preferably, be the 50%-150% of α, alpha, omega-dihydroxy polysiloxane quality.
In addition, for the silicone sealant of side windshield of automobile, the polysiloxanediol containing sulfydryl or end sulfydryl polysiloxane is also comprised.
Be shown below, the polysiloxanediol containing sulfydryl:
In addition, because part fire retardant has good water-absorbent, also the water molecules of part fire retardant containing crystallization itself is had, there is the ability of release water molecules, the water molecules of fire retardant or the water molecules discharged can have a strong impact on quality guaranteed period and the solidification quality of silicone sealant, in order to obtain better fire-retardant and solidification effect:
The described silicone sealant for side windshield of automobile, also comprise filler/fire retardant plural components, described filler/fire retardant plural components is coupling agent modified silicon-dioxide/hydrated aluminum oxide Nano Composite Particles, described silicon-dioxide/hydrated aluminum oxide Nano Composite Particles is nucleocapsid structure, silicon-dioxide is kernel, and hydrated aluminum oxide is shell.
The preparation method of coupling agent modified silicon-dioxide/hydrated aluminum oxide Nano Composite Particles is:
By ultrasonic disperse 5 ~ 30min in 10 weight part nano silica powders, 30 weight part aluminum chloride deionized water solutions, 1 weight part KH550 coupling agent, obtain emulsion.
After the emulsion of gained is stirred 5 ~ 30min at 50 ~ 90 DEG C, slowly drip 30 weight part volatile salt precipitant solution, continue reaction 2 ~ 4h, obtain precursor sol;
The precursor sol obtained respectively washs 4 times with deionized water, dehydrated alcohol respectively after centrifugation, then at 90 DEG C, dry acquisition precursor powder.
Calcine 2 ~ 3h at dried precursor powder is placed on 150 ~ 200 DEG C and obtain coupling agent modified silicon-dioxide/hydrated aluminum oxide Nano Composite Particles.
Because inorganic combustion inhibitor has very strong water-absorbent, silicone sealant the moisture absorption inorganic fire-retarded under, degradation is very fast.
The present invention, by the compound to filler and fire retardant, reaches abundant fusion therebetween.Also improve inorganic combustion inhibitor simultaneously and there is very strong absorptive feature.By the modification of coupling agent to filler and fire retardant, between organosilicon and filler/fire retardant plural components, there is very strong consistency.
For a silicone sealant preparation method for side windshield of automobile,
1) 100 weight part α, alpha, omega-dihydroxy polysiloxane, 10-60 weight part KH550 coupling agent and sodium stearate improved silica are joined in kneader, and 110 ~ 140 DEG C, mixing dehydration 30 ~ 360 minutes under vacuum tightness 0.06 ~ 0.1MPa, cooling obtains base-material;
2) methyl-silicone oil of 0.5-2 parts by weight of crosslinking agent, 0.1-0.5 part by weight of catalyst, 5-20 weight part is joined in high force dispersion machine successively, mix with above-mentioned base-material, under room temperature, vacuum tightness is 0.06 ~ 0.1MPa, and rotating speed 600rpm mixing obtains silicone sealant in 30 ~ 120 minutes.
The preparation method of described KH550 coupling agent and sodium stearate improved silica:
In a kettle., the sodium stearate of 15 weight parts, the silicon-dioxide powdery of 100 parts are added the acetone of 1000 weight parts, in 15 weight part distilled water, then disperse 30 minutes, then add 15 weight part KH550 coupling agents, continue dispersion 5 minutes, centrifugation afterwards, Air drying 8 hours in vacuum drying oven, obtains KH550 coupling agent and sodium stearate improved silica.
Beneficial effect of the present invention:
Combined modified by KH550 coupling agent and sodium stearate, reduces silicon-dioxide reunion probability, reduces the molecule distance between base-material, enhance the mechanical strength of seal gum.
Due to the existence of sodium stearate and KH550, sealing agent can realize bonding on different substrate materials, enhances the adhesive property of seal gum.
The present invention adopts single-component, at room temperature just can solidify.
By silicon-dioxide to organosilyl protection, can the weathering resistance of lift-off seal agent.
By the compound to filler and fire retardant, reach abundant fusion therebetween.Also improve inorganic combustion inhibitor simultaneously and there is very strong absorptive feature.By the modification of coupling agent to filler and fire retardant, between organosilicon and filler/fire retardant plural components, there is very strong consistency.
Embodiment
Embodiment 1
The silicone sealant of the present embodiment, composed as follows:
α, alpha, omega-dihydroxy polysiloxane 100 weight part
Improved silica 60 weight part
Vinyltriethoxysilane 1 weight part
Butyl (tetra) titanate 0.3 weight part
Methyl-silicone oil 15 weight part
Improved silica is KH550 silane coupling agent and sodium stearate improved silica.
The preparation method of this silicone sealant is:
1) 100 weight part α, alpha, omega-dihydroxy polysiloxane, 60 weight part KH550 coupling agents and sodium stearate improved silica are joined in kneader, and 110 ~ 140 DEG C, mixing dehydration 360 minutes under vacuum tightness 0.06 ~ 0.1MPa, cooling obtains base-material;
2) methyl-silicone oil of 1 parts by weight of ethylene ethyl triethoxy silicane alkane, 0.3 weight part butyl (tetra) titanate, 15 weight parts is joined in high force dispersion machine successively, mix with above-mentioned base-material, under room temperature, vacuum tightness is 0.06 ~ 0.1MPa, and rotating speed 600rpm mixes 120 minutes and obtains silicone sealant.
Embodiment 2
The silicone sealant of the present embodiment, composed as follows:
α, alpha, omega-dihydroxy polysiloxane 100 weight part
Improved silica 10 weight part
Vinyltriethoxysilane 1.5 weight part
Butyl (tetra) titanate 0.5 weight part
Methyl-silicone oil 5 weight part
Improved silica is sodium stearate improved silica.
The preparation method of this silicone sealant is:
1) 100 weight part α, alpha, omega-dihydroxy polysiloxane, 10 weight part sodium stearate improved silicas are joined in kneader, and 110 ~ 140 DEG C, mixing dehydration 30 minutes under vacuum tightness 0.06 ~ 0.1MPa, cooling obtains base-material;
2) methyl-silicone oil of 1.5 parts by weight of ethylene ethyl triethoxy silicane alkane, 0.5 weight part butyl (tetra) titanate, 5 weight parts is joined in high force dispersion machine successively, mix with above-mentioned base-material, under room temperature, vacuum tightness is 0.06 ~ 0.1MPa, and rotating speed 600rpm mixes 30 minutes and obtains silicone sealant.
Embodiment 3
The silicone sealant of the present embodiment, composed as follows:
α, alpha, omega-dihydroxy polysiloxane 100 weight part
Improved silica 60 weight part
Vinyltriethoxysilane 2 weight part
Butyl (tetra) titanate 0.1 weight part
Methyl-silicone oil 20 weight part
Improved silica is potassium stearate improved silica.
The preparation method of this silicone sealant is:
1) 100 weight part α, alpha, omega-dihydroxy polysiloxane, 60 weight part potassium stearate improved silicas are joined in kneader, and 110 ~ 140 DEG C, mixing dehydration 120 minutes under vacuum tightness 0.06 ~ 0.1MPa, cooling obtains base-material;
2) methyl-silicone oil of 2 parts by weight of ethylene ethyl triethoxy silicane alkane, 0.1 weight part butyl (tetra) titanate, 20 weight parts is joined in high force dispersion machine successively, mix with above-mentioned base-material, under room temperature, vacuum tightness is 0.06 ~ 0.1MPa, and rotating speed 600rpm mixes 60 minutes and obtains silicone sealant.
Embodiment 4
The silicone sealant of the present embodiment, composed as follows:
α, alpha, omega-dihydroxy polysiloxane 100 weight part
Improved silica 40 weight part
Vinyltriethoxysilane 0.5 weight part
Butyl (tetra) titanate 0.3 weight part
Methyl-silicone oil 10 weight part
Aluminium hydroxide 38
Improved silica is silane coupling agent containing sulfydryl and sodium stearate improved silica.
The preparation method of this silicone sealant is:
1) silane coupling agent and the sodium stearate improved silica that 100 weight part α, alpha, omega-dihydroxy polysiloxane, 40 weight parts are contained sulfydryl join in kneader, and 110 ~ 140 DEG C, mixing dehydration 240 minutes under vacuum tightness 0.06 ~ 0.1MPa, cooling obtains base-material;
2) methyl-silicone oil of 0.5 parts by weight of ethylene ethyl triethoxy silicane alkane, 0.3 weight part butyl (tetra) titanate, 10 weight parts is joined in high force dispersion machine successively, mix with above-mentioned base-material, under room temperature, vacuum tightness is 0.06 ~ 0.1MPa, and rotating speed 600rpm mixes 120 minutes and obtains silicone sealant.
Embodiment 5
The silicone sealant of the present embodiment, composed as follows:
α, alpha, omega-dihydroxy polysiloxane 100 weight part
Improved silica 40 weight part
Vinyltriethoxysilane 0.5 weight part
Butyl (tetra) titanate 0.3 weight part
Methyl-silicone oil 10 weight part
Filler/fire retardant plural components 30
Filler/fire retardant plural components is coupling agent modified silicon-dioxide/hydrated aluminum oxide Nano Composite Particles, and preparation method as previously mentioned.
Improved silica is KH550 coupling agent and sodium stearate improved silica.
The preparation method of this silicone sealant is:
1) 100 weight part α, alpha, omega-dihydroxy polysiloxane, 40 weight part KH550 coupling agents and sodium stearate improved silica are joined in kneader, and 110 ~ 140 DEG C, mixing dehydration 240 minutes under vacuum tightness 0.06 ~ 0.1MPa, cooling obtains base-material;
2) methyl-silicone oil of 0.5 parts by weight of ethylene ethyl triethoxy silicane alkane, 0.3 weight part butyl (tetra) titanate, 10 weight parts is joined in high force dispersion machine successively, mix with above-mentioned base-material, under room temperature, vacuum tightness is 0.06 ~ 0.1MPa, and rotating speed 600rpm mixes 120 minutes and obtains silicone sealant.
Comparative example
The silicone sealant of this comparative example, composed as follows:
α, alpha, omega-dihydroxy polysiloxane 100 weight part
Silicon-dioxide 60 weight part
Vinyltriethoxysilane 1 weight part
Butyl (tetra) titanate 0.3 weight part
Methyl-silicone oil 15 weight part
The preparation method of this silicone sealant is:
1) 100 weight part α, alpha, omega-dihydroxy polysiloxane, 60 parts by weight of silica are joined in kneader, and 110 ~ 140 DEG C, mixing dehydration 360 minutes under vacuum tightness 0.06 ~ 0.1MPa, cooling obtains base-material;
2) methyl-silicone oil of 1 parts by weight of ethylene ethyl triethoxy silicane alkane, 0.3 weight part butyl (tetra) titanate, 15 weight parts is joined in high force dispersion machine successively, mix with above-mentioned base-material, under room temperature, vacuum tightness is 0.06 ~ 0.1MPa, and rotating speed 600rpm mixes 120 minutes and obtains silicone sealant.
Embodiment of the present invention silicone sealant is used for automotive windshields glass, according to tensile bond strength and the fire resistance of GBl6776, GB23864-2009 standard detection embodiment 1-5 and comparative example.Its performance index are as shown in the table:
In GB23864-2009 standard, the criterion of acceptability of fire performance was: higher than 1 hour.Can find out, the silicone sealant containing filler/flame retardant combination material has good flame retardant properties.
Claims (5)
1. for a silicone sealant for side windshield of automobile, it is characterized in that, with parts by weight, comprise following component:
α, alpha, omega-dihydroxy polysiloxane 100 weight part;
Improved silica 10-60 weight part;
Linking agent 0.5-2 weight part;
Catalyzer 0.1-0.5 weight part;
Methyl-silicone oil 5-20 weight part;
Described improved silica is KH550 coupling agent and sodium stearate improved silica, described silicone sealant, also comprise filler/fire retardant plural components, described filler/fire retardant plural components is coupling agent modified silicon-dioxide/hydrated aluminum oxide Nano Composite Particles, described improved silica/hydrated aluminum oxide Nano Composite Particles is nucleocapsid structure, silicon-dioxide is kernel, and hydrated aluminum oxide is shell.
2. a kind of silicone sealant for side windshield of automobile according to claim 1, it is characterized in that, described linking agent is selected from methyltrimethoxy silane, vinyltrimethoxy silane, Union carbide A-162, vinyltriethoxysilane, tetramethoxy-silicane, tetraethoxysilane, tetrapropoxysilane, four butoxy silanes, phenyltrimethoxysila,e, phenyl triethoxysilane, methyl tributanoximo silane, vinyl tributyl ketoximyl silane, methyl three (mibk oximido) silane, vinyl three (mibk oximido) silane, methyl tri acetylacetonate oximino silane, phenyl tributanoximo silane, phenyl trimethicone isobutyl ketone oximino silane, phenyl tri acetylacetonate oximino silane, four Diacetylmonoxime base silanes, one or more in tetramethyl-isobutyl ketone oximino silane.
3. a kind of silicone sealant for side windshield of automobile according to claim 1, it is characterized in that, described catalyzer is selected from dibutyl tin laurate, tin dilaurate diamyl tin, tin dilaurate dihexyl tin, tin dilaurate dioctyl tin, dibutyltin diacetate, two acetic acid diamyl tin, two acetic acid dihexyl tin, two acetic acid dioctyl tins, dimethoxy dibutyl tin, dimethoxy diamyl tin, dimethoxy dihexyl tin, dimethoxy dioctyl tin, diethoxy dibutyl tin, diethoxy diamyl tin, diethoxy dihexyl tin, diethoxy dioctyl tin, dipropoxy dibutyl tin, dipropoxy diamyl tin, dipropoxy dihexyl tin, dipropoxy dioctyl tin, dibutoxy dibutyl tin, dibutoxy diamyl tin, dibutoxy dihexyl tin, dibutoxy dioctyl tin, dibutyl tin diacetyl acetonate, any one in stannous octoate, two kinds or more of.
4. a kind of silicone sealant for side windshield of automobile according to claim 1, it is characterized in that, described silicone sealant, also comprise fire retardant, described fire retardant be selected from hydroxide form inorganic combustion inhibitor, oxide type inorganic combustion inhibitor, boric acid salt form fire retardant, stannic acid salt form fire retardant, antimony type fire retardant one or more.
5. a kind of silicone sealant preparation method for side windshield of automobile according to claim 1, is characterized in that, comprise the following steps:
1) by 100 weight part α, alpha, omega-dihydroxy polysiloxane, 10-60 weight part KH550 coupling agent and sodium stearate improved silica join in kneader, and 110 ~ 140 DEG C, mixing dehydration 30 ~ 360 minutes under vacuum tightness 0.06 ~ 0.1MPa, cooling obtains base-material;
2) methyl-silicone oil of 0.5-2 parts by weight of crosslinking agent, 0.1-0.5 part by weight of catalyst, 5-20 weight part is joined in high force dispersion machine successively, mix with above-mentioned base-material, under room temperature, vacuum tightness is 0.06 ~ 0.1MPa, and rotating speed 600rpm mixing obtains silicone sealant in 30 ~ 120 minutes.
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| CN104387961A (en) * | 2014-12-08 | 2015-03-04 | 江苏诺飞新材料科技有限公司 | Organic silicon pressure-sensitive surface coating |
| CN105038689B (en) * | 2015-07-03 | 2018-05-11 | 黑龙江省科学院石油化学研究院 | A kind of solvent-free normal temperature crosslinked organic pressure-sensitive gel and preparation method thereof |
| CN105838317B (en) * | 2016-04-27 | 2018-07-10 | 勃乐氏密封系统（太仓）有限公司 | A kind of high-performance single-component de-alcoholized room temperature vulcanized silicone rubber fluid sealant and preparation method thereof |
| CN107936562B (en) * | 2017-11-06 | 2021-05-11 | 浙江衢州硅宝化工有限公司 | Non-corrosive ketoxime type room temperature curing silicone rubber and preparation method thereof |
| CN112457819A (en) * | 2019-09-09 | 2021-03-09 | 广州以恒有机硅有限公司 | High-adhesion silicone sealant |
| CN118516044B (en) * | 2024-05-28 | 2025-02-07 | 广州信粤新材料科技有限公司 | Anticorrosive organosilicon coating spray and preparation method thereof |
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| CN101629063A (en) * | 2009-08-24 | 2010-01-20 | 陈世龙 | Expanding type flame-resistant silicone sealant and preparation method thereof |
| CN101747859A (en) * | 2010-01-29 | 2010-06-23 | 浙江凌志精细化工有限公司 | Silicone fireproof sealant for construction and preparation method thereof |
| CN102504754A (en) * | 2011-10-26 | 2012-06-20 | 佛山市日丰企业有限公司 | Deacidified silicone sealant for buildings and preparation method thereof |
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