CN103509517B - A kind of porcelain fire-retardant fireproof silicone sealant and preparation method thereof - Google Patents
A kind of porcelain fire-retardant fireproof silicone sealant and preparation method thereof Download PDFInfo
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Abstract
The invention provides a kind of porcelain fire-retardant fireproof silicone sealant and preparation method thereof, by base polymer 100 parts, softening agent 3-40 part, filler 5-200 part, Vitrified powder 30-150 part, linking agent 1-15 part, stablizer 0.1-3 part, catalyzer 0.5-3 part, coupling agent 0.5-3 part forms, during preparation, above-mentioned raw materials is joined in high velocity dispersators in vacuum tightness 0.06-0.095MPa, rotating speed 20-600rpm carries out obtaining for stirring 60-180 minute, hard ceramic material is formed under the high temperature of sealing glue more than 500 DEG C continues ablation, fixing and sealing function can not be lost, play isolated flame, smog, fp effect, ensure that the safety of personnel escape in case of fire, in addition, the invention provides the preparation method of sealing glue, this preparation method is easy to operate.
Description
Technical field
The invention belongs to high molecule sealing materials technical field, be specifically related to a kind of porcelain fire-retardant fireproof silicone sealant and preparation method thereof.
Background technology
Silicone sealant has excellent ageing resistance, uvioresistant, shock resistance, high-low temperature resistant, can keep the features such as elasticity in harsh climate environment, is therefore widely used in industries such as building, automobile, electric, mechanical, chemical industry.Along with the usage quantity of the densely populated place district silicone sealants such as Highrise buildings, hospital, station and large-scale public place of entertainment increases, security against fire also more and more causes the attention of people, and this also makes the fire rating of building trade to seal gum require more and more higher.Although common flame-proof silicone sealant has flame retardant resistance and self-extinguishing, can inorganic powder be become under continuous high temperature ablation, thus lose fixing and sealing function.
Summary of the invention
The invention provides a kind of can high temperature continue ablation under form the porcelain fire-retardant fireproof silicone sealant of hard ceramic material, hard ceramic material is formed under the high temperature of sealing glue more than 500 DEG C continues ablation, fixing and sealing function can not be lost, play isolated flame, smog, fp effect, ensure that the safety of personnel escape in case of fire; In addition, the invention provides the preparation method of sealing glue, this preparation method is easy to operate.
For reaching above-mentioned purpose, the present invention by the following technical solutions:
A kind of porcelain fire-retardant fireproof silicone sealant, consists of the following composition, with parts by weight:
Described base polymer is the polydimethylsiloxane of hydroxyl-terminated injecting two methyl siloxane, trimethoxy end-blocking, and at least one in methyl dimethoxy oxygen base end-blocking polydimethylsiloxane, when 25 DEG C, viscosity is 0.5-200Pas.
Described filler is at least one in gas-phase silica, precipitated silica, nano-calcium carbonate, silicon powder, silica powder, organobentonite, and wherein the specific surface area of gas-phase silica is 100-300m2/g, and packing material size is 40-80nm.
Described Vitrified powder, through roasting, is 350 DEG C with maturing temperature, roasting 30 minutes, Vitrified powder roasting is dewatered, makes short texture between molecule, be easy to react with base polymer, make the dispersion of Vitrified powder more even., particle diameter is 0.01-10 μm; Described Vitrified powder is that aluminium sesquioxide, boron trioxide, silicon-dioxide, Lithium Oxide 98min, sodium oxide, potassium oxide, barium oxide, calcium oxide, magnesium oxide, oxidation are secret, one or two or more kinds in zirconium white.Described linking agent is at least one in methyltrimethoxy silane, vinyltrimethoxy silane or phenyltrimethoxysila,e.
Described catalyzer is isopropyl titanate, butyl (tetra) titanate, two (methyl aceto acetate) two (isopropoxy) titanic acid ester complex compound, two (methyl ethyl diketone) two (isopropoxy) titanic acid ester complex compound; At least one in the organo-metallic catalyst such as dibutyl tin laurate, dibutyltin diacetate
Described silane coupling agent is at least one in γ-aminopropyl triethoxysilane, β-aminoethyl-γ-aminopropyltrimethoxysilane, two (γ-trimethoxysilylpropyl) amine, glycidyl ether propyl trimethoxy silicane.
Described stablizer is at least one in carbimide propyl-triethoxysilicane, molecular sieve, calcium chloride, magnesium chloride.
Described softening agent is methyl-silicone oil, white oil, at least one in alkoxyl silicone oil that viscosity is moored in 50-500.
A kind of preparation method of porcelain fire-retardant fireproof Dealcoholization type silicone sealant comprises the steps:
1. base polymer 100 parts, filler 5-200 part, Vitrified powder 30-150 part are joined in vacuum kneader, and at 105-150 DEG C, vacuum tightness is dewatered the base-material of 2-3h, cooling system under 0.06-0.1MPa;
2. above-mentioned base-material, softening agent 3-40 part, linking agent 4-15 part, catalyzer 0.5-3 part, silane coupling agent 0.5-5 part are joined in planetary mixer, keep vacuum tightness-0.1-0.06MPa, stirring velocity is 20-80 rev/min, stir 0.5-3h, obtained porcelain fire-retardant fireproof silicone sealant.
The present invention by adding Vitrified powder in ordinary silicon ketone seal gum, under high temperature more than 500 DEG C continues ablation, ceramic material is formed after ashes after Vitrified powder and silicone sealant burn absorb heat, along with raising and the prolongation of ablation time of ablation temperature, the ceramic material formed can be more and more harder, avoid seal gum to lose fixing and sealing function, play isolated flame, smog, fp effect, ensure that the safety of personnel escape in case of fire; In addition, the present invention has good physical and mechanical property, porcelain fire-retardant fireproof performance, excellent cohesiveness and stability in storage.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment 1:
Mark by weight, it is the polydimethylsiloxane 100 parts of the trimethoxy end-blocking of 20000cps by viscosity, silicon powder 6 parts, aluminium sesquioxide 100 parts is put in kneader, keep temperature 150 DEG C, vacuum tightness is dewatered blended 2h between 0.06-0.09MPa, cross runner milling to mill 2 times, proceed to and be cooled to room temperature in high speed dispersion stirring tank and obtain base-material, at room temperature by methyltrimethoxy silane 6.5 parts, vinyltrimethoxy silane 1.5 parts, γ-aminopropyl triethoxysilane 0.8 part, glycidyl ether propyl trimethoxy silicane 0.8 part, methyl-silicone oil 20 parts joins in high speed dispersion stirring tank, mix with base-material, vacuum tightness remains on-0.1-0.06MPa, rotating speed remains on 250rpm, stir 1h, add 0.7 part, two (methyl aceto acetate) two (isopropoxy) titanic acid ester complex compound, stir, vacuum tightness remains on-0.1-0.06MPa, rotating speed remains on 250rpm, discharging tinning after stirring 1h.Obtained single-component porcelain fire-retardant fireproof Dealcoholization type silicone sealant.Product performance test result is in table 1.
Embodiment 2.
Mark by weight, it is the hydroxyl-terminated injecting two methyl siloxane 100 parts of 20000cps by viscosity, gas-phase silica 15 parts, silicon-dioxide 80 parts is put in kneader, keep temperature 150 DEG C, vacuum tightness is dewatered blended 2h between 0.06-0.09MPa, cross runner milling to mill 2 times, proceed to and be cooled to room temperature in high speed dispersion stirring tank and obtain base-material, at room temperature by methyltrimethoxy silane 8 parts, vinyltrimethoxy silane 1 part, carbimide propyl-triethoxysilicane 0.5 part, β-aminoethyl-γ-aminopropyltrimethoxysilane 0.6 part, methyl-silicone oil 20 parts joins in high speed dispersion stirring tank, mix with base-material, vacuum tightness remains on-0.1-0.06MPa, rotating speed remains on 250rpm, stir 1h, add isopropyl titanate 0.7 part, stir, vacuum tightness remains on-0.1-0.06MPa, rotating speed remains on 250rpm, discharging tinning after stirring 1h.Obtained single-component porcelain fire-retardant fireproof Dealcoholization type silicone sealant.Product performance test result is in table 1.
Embodiment three
Mark by weight, it is the methyl dimethoxy oxygen base end-blocking polydimethylsiloxane 100 parts of 20000cps by viscosity, nano-calcium carbonate 2, silicon powder 3, silica powder 1 part, potassium oxide 65, 35 parts, barium oxide is put in kneader, keep temperature 150 DEG C, vacuum tightness is dewatered blended 2h between 0.06-0.09MPa, cross runner milling to mill 2 times, proceed to and be cooled to room temperature in high speed dispersion stirring tank and obtain base-material, at room temperature by methyltrimethoxy silane 4.5 parts, vinyltrimethoxy silane 1.5 parts, γ-aminopropyl triethoxysilane 0.8 part, β-aminoethyl-γ-aminopropyltrimethoxysilane 0.8 part, alkoxyl silicone oil 20 parts, white oil 10 parts, join in high speed dispersion stirring tank, mix with base-material, vacuum tightness remains on-0.1-0.06MPa, rotating speed remains on 250rpm, stir 1h, add 0.5 part, two (methyl aceto acetate) two (isopropoxy) titanic acid ester complex compound, dibutyl tin laurate 0.2 part, stir, vacuum tightness remains on-0.1-0.06MPa, rotating speed remains on 250rpm, discharging tinning after stirring 1h.Obtained single-component porcelain fire-retardant fireproof Dealcoholization type silicone sealant.Product performance test result is in table 1.
Embodiment four
Mark by weight, it is the hydroxyl-terminated injecting two methyl siloxane 90 parts of 20000cps by viscosity, methyl dimethoxy oxygen base end-blocking polydimethylsiloxane 10 parts, gas-phase silica 6 parts, silica powder 5, organobentonite 4, silicon-dioxide 80 parts, Lithium Oxide 98min 10 parts, 10 parts, magnesium oxide is put in kneader, keep temperature 150 DEG C, vacuum tightness is dewatered blended 2h between 0.06-0.09MPa, cross runner milling to mill 2 times, proceed to and be cooled to room temperature in high speed dispersion stirring tank and obtain base-material, at room temperature by phenyltrimethoxysila,e 9 parts, carbimide propyl-triethoxysilicane 0.3 part, 0.2 part, calcium chloride, β-aminoethyl-γ-aminopropyltrimethoxysilane 0.6 part, methyl-silicone oil 15 parts, alkoxyl silicone oil 15 parts joins in high speed dispersion stirring tank, mix with base-material, vacuum tightness remains on-0.1-0.06MPa, rotating speed remains on 250rpm, stir 1h, add isopropyl titanate 0.5 part, dibutyl tin laurate 0.2 part, stir, vacuum tightness remains on-0.1-0.06MPa, rotating speed remains on 250rpm, discharging tinning after stirring 1h.Obtained single-component porcelain fire-retardant fireproof Dealcoholization type silicone sealant.Product performance test result is in table 1.
Table 1 test result
Claims (4)
1. a porcelain fire-retardant fireproof silicone sealant, it is characterized in that, by weight, it is the polydimethylsiloxane 100 parts of the trimethoxy end-blocking of 20000 cps by viscosity, silicon powder 6 parts, aluminium sesquioxide 100 parts is put in kneader, keep temperature 150 DEG C, vacuum tightness is dewatered blended 2 h between-0.06--0.09 MPa, cross runner milling to mill 2 times, proceed to and be cooled to room temperature in high speed dispersion stirring tank and obtain base-material, at room temperature by methyltrimethoxy silane 6.5 parts, vinyltrimethoxy silane 1.5 parts, γ-aminopropyl triethoxysilane 0.8 part, glycidyl ether propyl trimethoxy silicane 0.8 part, methyl-silicone oil 20 parts joins in high speed dispersion stirring tank, mix with base-material, vacuum tightness remains on-0.1--0.06 MPa, rotating speed remains on 250 rpm, stir 1 h, add 0.7 part, two (methyl aceto acetate) two (isopropoxy) titanic acid ester complex compound, stir, vacuum tightness remains on-0.1--0.06 MPa, rotating speed remains on 250 rpm, stir discharging tinning after 1 h, obtained single-component porcelain fire-retardant fireproof Dealcoholization type silicone sealant.
2. a porcelain fire-retardant fireproof silicone sealant, it is characterized in that, by weight, it is the hydroxyl-terminated injecting two methyl siloxane 100 parts of 20000 cps by viscosity, gas-phase silica 15 parts, silicon-dioxide 80 parts is put in kneader, keep temperature 150 DEG C, vacuum tightness is dewatered blended 2 h between-0.06--0.09 MPa, cross runner milling to mill 2 times, proceed to and be cooled to room temperature in high speed dispersion stirring tank and obtain base-material, at room temperature by methyltrimethoxy silane 8 parts, vinyltrimethoxy silane 1 part, carbimide propyl-triethoxysilicane 0.5 part, β-aminoethyl-γ-aminopropyltrimethoxysilane 0.6 part, methyl-silicone oil 20 parts joins in high speed dispersion stirring tank, mix with base-material, vacuum tightness remains on-0.1--0.06 MPa, rotating speed remains on 250 rpm, stir 1 h, add isopropyl titanate 0.7 part, stir, vacuum tightness remains on-0.1--0.06 MPa, rotating speed remains on 250 rpm, discharging tinning after stirring 1h, obtained single-component porcelain fire-retardant fireproof Dealcoholization type silicone sealant.
3. a porcelain fire-retardant fireproof silicone sealant, it is characterized in that, by weight, it is the methyl dimethoxy oxygen base end-blocking polydimethylsiloxane 100 parts of 20000 cps by viscosity, nano-calcium carbonate 2, silicon powder 3, silica powder 1 part, potassium oxide 65, 35 parts, barium oxide is put in kneader, keep temperature 150 DEG C, vacuum tightness is dewatered blended 2 h between-0.06--0.09 MPa, cross runner milling to mill 2 times, proceed to and be cooled to room temperature in high speed dispersion stirring tank and obtain base-material, at room temperature by methyltrimethoxy silane 4.5 parts, vinyltrimethoxy silane 1.5 parts, γ-aminopropyl triethoxysilane 0.8 part, β-aminoethyl-γ-aminopropyltrimethoxysilane 0.8 part, alkoxyl silicone oil 20 parts, white oil 10 parts, join in high speed dispersion stirring tank, mix with base-material, vacuum tightness remains on-0.1--0.06 MPa, rotating speed remains on 250 rpm, stir 1 h, add 0.5 part, two (methyl aceto acetate) two (isopropoxy) titanic acid ester complex compound, dibutyl tin laurate 0.2 part, stir, vacuum tightness remains on-0.1--0.06 MPa, rotating speed remains on 250 rpm, stir discharging tinning after 1 h, obtained single-component porcelain fire-retardant fireproof Dealcoholization type silicone sealant.
4. a porcelain fire-retardant fireproof silicone sealant, it is characterized in that, by weight, it is the hydroxyl-terminated injecting two methyl siloxane 90 parts of 20000 cps by viscosity, methyl dimethoxy oxygen base end-blocking polydimethylsiloxane 10 parts, gas-phase silica 6 parts, silica powder 5 parts, organobentonite 4 parts, silicon-dioxide 80 parts, Lithium Oxide 98min 10 parts, 10 parts, magnesium oxide is put in kneader, keep temperature 150 DEG C, vacuum tightness is dewatered blended 2 h between-0.06--0.09 MPa, cross runner milling to mill 2 times, proceed to and be cooled to room temperature in high speed dispersion stirring tank and obtain base-material, at room temperature by phenyltrimethoxysila,e 9 parts, carbimide propyl-triethoxysilicane 0.3 part, 0.2 part, calcium chloride, β-aminoethyl-γ-aminopropyltrimethoxysilane 0.6 part, methyl-silicone oil 15 parts, alkoxyl silicone oil 15 parts joins in high speed dispersion stirring tank, mix with base-material, vacuum tightness remains on-0.1--0.06 MPa, rotating speed remains on 250 rpm, stir 1 h, add isopropyl titanate 0.5 part, dibutyl tin laurate 0.2 part, stir, vacuum tightness remains on-0.1--0.06 MPa, rotating speed remains on 250 rpm, discharging tinning after stirring 1h, obtained single-component porcelain fire-retardant fireproof Dealcoholization type silicone sealant.
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Address after: Yangzhong City Development Zone, Jiangsu city of Zhenjiang province 212211 Hong Kong Road No. 568 Patentee after: JIANGSU TIANCHEN NEW MATERIALS CO., LTD. Address before: Yangzhong City Development Zone, Jiangsu city of Zhenjiang province 212200 Hong Kong Road No. 568 Patentee before: Jiangsu Tiancheng Silicon Co., Ltd. |