CN105482764A - Antibacterial flame retardant polyurethane pouring sealant - Google Patents
Antibacterial flame retardant polyurethane pouring sealant Download PDFInfo
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- CN105482764A CN105482764A CN201511016678.XA CN201511016678A CN105482764A CN 105482764 A CN105482764 A CN 105482764A CN 201511016678 A CN201511016678 A CN 201511016678A CN 105482764 A CN105482764 A CN 105482764A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/206—Applications use in electrical or conductive gadgets use in coating or encapsulating of electronic parts
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Abstract
The invention discloses an antibacterial flame retardant polyurethane pouring sealant. The pouring sealant comprises the following raw materials: polyether polyol, hexamethylene diisocyanate, methyl cyclohexyl diisocyanate, a catalyst, nano-zinc oxide, nano-titania, nano aluminium hydroxide, organically modified montmorillonite, carbon nanotubes, cetyltrimethyl ammonium chloride, nano-silver, bamboo charcoal powder, quaternary ammonium salt, tricresyl phosphate, dipropylene glycol dibenzoate, dipropylene glycol phthalate, 8-hydroxyquinolinone, vinyl-terminated silicone oil and a vinyltriethoxysilane-platinum complex. The antibacterial flame retardant polyurethane pouring sealant provided by the invention has excellent antibacterial properties, good flame retardant property, high bonding strength and long service life.
Description
Technical field
The present invention relates to joint sealant technical field, particularly relate to a kind of antibacterial flame-retardant polyurethane pouring sealant.
Background technology
Joint sealant is mainly used in the bonding of field of electronic components in electronic equipment; also known as electronic pastes; it belongs to liquid before uncured; there is mobility; waterproof and dampproof, dust-proof, insulation, heat conduction can be played after solidification, maintain secrecy, protection against corrosion, heatproof, shockproof effect, can be used for bonding, the sealing of electronic devices and components, embedding and coating protection.What current use was maximum mainly contains epoxy resin embedding adhesive, silicone resin joint sealant and polyurethane pouring sealant.
Urethane can have higher elasticity and intensity in wider durometer level; it has excellent wear resistance, oil-proofness, resistance to fatigue, anti-vibration resistance, water tolerance, electrical insulating property, cheap price in addition, and its sealing at the components and parts in various field and protection field are widely used.Along with the development of society, the performance of people to polyurethane pouring sealant is had higher requirement, its germ resistance of existing polyurethane pouring sealant can not meet the requirement of society, need to improve, in addition, the combustionvelocity of urethane is fast, and can produce toxic gas in combustion processes, it is not good enough that this just causes existing most of polyurethane pouring sealant flame retardant properties in the process used, and limits the application of polyurethane pouring sealant.
Summary of the invention
Based on the technical problem that background technology exists, the present invention proposes a kind of antibacterial flame-retardant polyurethane pouring sealant, its anti-microbial property is excellent, and flame retardant properties is good, and cohesive strength is high, long service life.
A kind of antibacterial flame-retardant polyurethane pouring sealant that the present invention proposes, its raw material comprises following component by weight: polyether glycol 150-200 part, hexamethylene diisocyanate 20-35 part, Methylcyclohexyl diisocyanate 30-45 part, catalyzer 0.2-0.6 part, nano zine oxide 3-10 part, nano titanium oxide 2-8 part, nano-aluminum hydroxide 2-6 part, organic modification montmonrillonite 3-8 part, carbon nanotube 2-10 part, palmityl trimethyl ammonium chloride 1-5 part, nanometer silver 1-5 part, bamboo charcoal powder 2-8 part, quaternary ammonium salt 8-15 part, Tritolyl Phosphate 3-12 part, dipropylene glycol dibenzoate 5-15 part, dipropyl phthalic diol ester 8-15 part, oxine ketone 1-2.5 part, vinyl-terminated silicone fluid 5-15 part, vinyltriethoxysilane-platinum complex 2-8 part.
Preferably, in its raw material, the weight ratio of polyether glycol, hexamethylene diisocyanate, Methylcyclohexyl diisocyanate is 170-190:26-33:36-42.
Preferably, its raw material comprises following component by weight: polyether glycol 180-186 part, hexamethylene diisocyanate 29-31 part, Methylcyclohexyl diisocyanate 38-41 part, catalyzer 0.5-0.6 part, nano zine oxide 6.5-7.2 part, nano titanium oxide 5.6-6.2 part, nano-aluminum hydroxide 4.3-5 part, organic modification montmonrillonite 5.5-6 part, carbon nanotube 7-9 part, palmityl trimethyl ammonium chloride 2.6-3.1 part, nanometer silver 3-4 part, bamboo charcoal powder 5.3-6 part, quaternary ammonium salt 10-13 part, Tritolyl Phosphate 6-9 part, dipropylene glycol dibenzoate 8-11 part, dipropyl phthalic diol ester 9-12 part, oxine ketone 1.6-2.1 part, vinyl-terminated silicone fluid 8-10 part, vinyltriethoxysilane-platinum complex 3.5-5 part.
Preferably, its raw material comprises following component by weight: polyether glycol 185 parts, hexamethylene diisocyanate 30 parts, Methylcyclohexyl diisocyanate 40 parts, catalyzer 0.55 part, nano zine oxide 7 parts, nano titanium oxide 6 parts, nano-aluminum hydroxide 4.5 parts, organic modification montmonrillonite 5.8 parts, carbon nanotube 8 parts, palmityl trimethyl ammonium chloride 3 parts, nanometer silver 3.6 parts, bamboo charcoal powder 5.6 parts, quaternary ammonium salt 12 parts, Tritolyl Phosphate 8 parts, dipropylene glycol dibenzoate 10 parts, dipropyl phthalic diol ester 10 parts, oxine ketone 2 parts, vinyl-terminated silicone fluid 8.5 parts, vinyltriethoxysilane-platinum complex 4 parts.
Preferably, described quaternary ammonium salt is prepared according to following technique: in autoclave, pass into nitrogen, then γ-chloropropyl triethoxysilane and diisopropanolamine (DIPA) is added by the mol ratio of 1-2:3-8,10-18h is reacted at 115-125 DEG C, be chilled to room temperature after reaction terminates, after suction filtration, underpressure distillation obtains modified silane; Nitrogen is passed in reaction unit, then add 2-5 part modified silane and 10-25 part anhydrous methanol by weight, at 35-45 DEG C, add 2-3.5 part epoxy chloropropane, reaction 2-5h, be down to room temperature after reaction terminates, obtain described quaternary ammonium salt through rotary evaporation, anhydrous diethyl ether wash-out, vacuum-drying.
Preferably, described quaternary ammonium salt is prepared according to following technique: in autoclave, pass into nitrogen, then γ-chloropropyl triethoxysilane and diisopropanolamine (DIPA) is added by the mol ratio of 1.5:5,15h is reacted at 120 DEG C, be chilled to room temperature after reaction terminates, after suction filtration, underpressure distillation obtains modified silane; Nitrogen is passed in reaction unit, then add 3 parts of modified silanes and 20 parts of anhydrous methanols by weight, at 40 DEG C, add 3.2 parts of epoxy chloropropane, reaction 3h, be down to room temperature after reaction terminates, obtain described quaternary ammonium salt through rotary evaporation, anhydrous diethyl ether wash-out, vacuum-drying.
Preferably, described catalyzer is that dibutyl tin laurate, stannous octoate, stannous oleate are by weight the mixture for 1:4:3.
Preferably, the median size of described nano zine oxide is 20-35nm; The median size of described nano titanium oxide is 35-50nm; The median size of described nano-aluminum hydroxide is 15-30nm; The median size of described nanometer silver is 10-25nm.
In joint sealant of the present invention, with polyether glycol, hexamethylene diisocyanate and Methylcyclohexyl diisocyanate for raw material, give the corrosion-resistant and ageing resistance of joint sealant excellence, with the addition of nano zine oxide, nano titanium oxide, nano-aluminum hydroxide, organic modification montmonrillonite, carbon nanotube, nanometer silver, bamboo charcoal powder is filler, wherein, under the effect of palmityl trimethyl ammonium chloride, uniform filling is scattered in system, give the physical strength of joint sealant excellence, with Tritolyl Phosphate, vinyl-terminated silicone fluid, vinyltriethoxysilane-platinum complex has synergy after coordinating, significantly improve the flame retardant resistance of joint sealant, in optimal way, in the preparation process of quaternary ammonium salt, first have selected γ-chloropropyl triethoxysilane and diisopropanolamine (DIPA) is raw material, by regulating the condition of reaction, the chlorine atom in γ-chloropropyl triethoxysilane and the amino in diisopropanolamine (DIPA) is made to there occurs reaction, obtain modified silane, after mixing with epoxy chloropropane, there occurs quaternary ammonium reaction and obtain quaternary ammonium salt, added in system, with the nanometer silver in system, bamboo charcoal powder and nano zine oxide, the anti-microbial property of joint sealant excellence is given after nano titanium oxide coordinates, nano-aluminum hydroxide adds in system and has cooperative flame retardant effect with vinyltriethoxysilane-platinum complex, Tritolyl Phosphate, significantly improves the flame retardant resistance of joint sealant.
Embodiment
Below, by specific embodiment, technical scheme of the present invention is described in detail.
Embodiment 1
A kind of antibacterial flame-retardant polyurethane pouring sealant that the present invention proposes, its raw material comprises following component by weight: polyether glycol 200 parts, hexamethylene diisocyanate 20 parts, Methylcyclohexyl diisocyanate 45 parts, catalyzer 0.2 part, nano zine oxide 10 parts, nano titanium oxide 2 parts, nano-aluminum hydroxide 6 parts, organic modification montmonrillonite 3 parts, carbon nanotube 10 parts, palmityl trimethyl ammonium chloride 1 part, nanometer silver 5 parts, bamboo charcoal powder 8 parts, quaternary ammonium salt 15 parts, Tritolyl Phosphate 3 parts, dipropylene glycol dibenzoate 15 parts, dipropyl phthalic diol ester 8 parts, oxine ketone 2.5 parts, vinyl-terminated silicone fluid 5 parts, vinyltriethoxysilane-platinum complex 8 parts.
Embodiment 2
A kind of antibacterial flame-retardant polyurethane pouring sealant that the present invention proposes, its raw material comprises following component by weight: polyether glycol 150 parts, hexamethylene diisocyanate 35 parts, Methylcyclohexyl diisocyanate 30 parts, catalyzer 0.6 part, nano zine oxide 3 parts, nano titanium oxide 8 parts, nano-aluminum hydroxide 2 parts, organic modification montmonrillonite 8 parts, carbon nanotube 2 parts, palmityl trimethyl ammonium chloride 5 parts, nanometer silver 1 part, bamboo charcoal powder 2 parts, quaternary ammonium salt 8 parts, Tritolyl Phosphate 12 parts, dipropylene glycol dibenzoate 5 parts, dipropyl phthalic diol ester 15 parts, oxine ketone 1 part, vinyl-terminated silicone fluid 15 parts, vinyltriethoxysilane-platinum complex 2 parts.
Embodiment 3
A kind of antibacterial flame-retardant polyurethane pouring sealant that the present invention proposes, its raw material comprises following component by weight: polyether glycol 180 parts, hexamethylene diisocyanate 31 parts, Methylcyclohexyl diisocyanate 38 parts, catalyzer 0.6 part, nano zine oxide 6.5 parts, nano titanium oxide 6.2 parts, nano-aluminum hydroxide 4.3 parts, organic modification montmonrillonite 6 parts, carbon nanotube 7 parts, palmityl trimethyl ammonium chloride 3.1 parts, nanometer silver 3 parts, bamboo charcoal powder 6 parts, quaternary ammonium salt 10 parts, Tritolyl Phosphate 9 parts, dipropylene glycol dibenzoate 8 parts, dipropyl phthalic diol ester 12 parts, oxine ketone 1.6 parts, vinyl-terminated silicone fluid 10 parts, vinyltriethoxysilane-platinum complex 3.5 parts,
Wherein, the median size of described nano zine oxide is 20nm; The median size of described nano titanium oxide is 50nm; The median size of described nano-aluminum hydroxide is 15nm; The median size of described nanometer silver is 25nm;
Described quaternary ammonium salt is prepared according to following technique: in autoclave, pass into nitrogen, then γ-chloropropyl triethoxysilane and diisopropanolamine (DIPA) is added by the mol ratio of 2:3, at 125 DEG C, react 10h, be chilled to room temperature after reaction terminates, after suction filtration, underpressure distillation obtains modified silane; Nitrogen is passed in reaction unit, then add 5 parts of modified silanes and 10 parts of anhydrous methanols by weight, at 45 DEG C, add 2 parts of epoxy chloropropane, reaction 5h, be down to room temperature after reaction terminates, obtain described quaternary ammonium salt through rotary evaporation, anhydrous diethyl ether wash-out, vacuum-drying.
Embodiment 4
A kind of antibacterial flame-retardant polyurethane pouring sealant that the present invention proposes, its raw material comprises following component by weight: polyether glycol 186 parts, hexamethylene diisocyanate 29 parts, Methylcyclohexyl diisocyanate 41 parts, catalyzer 0.5 part, nano zine oxide 7.2 parts, nano titanium oxide 5.6 parts, nano-aluminum hydroxide 5 parts, organic modification montmonrillonite 5.5 parts, carbon nanotube 9 parts, palmityl trimethyl ammonium chloride 2.6 parts, nanometer silver 4 parts, bamboo charcoal powder 5.3 parts, quaternary ammonium salt 13 parts, Tritolyl Phosphate 6 parts, dipropylene glycol dibenzoate 11 parts, dipropyl phthalic diol ester 9 parts, oxine ketone 2.1 parts, vinyl-terminated silicone fluid 8 parts, vinyltriethoxysilane-platinum complex 5 parts,
Wherein, the median size of described nano zine oxide is 35nm; The median size of described nano titanium oxide is 35nm; The median size of described nano-aluminum hydroxide is 30nm; The median size of described nanometer silver is 10nm;
Described quaternary ammonium salt is prepared according to following technique: in autoclave, pass into nitrogen, then γ-chloropropyl triethoxysilane and diisopropanolamine (DIPA) is added by the mol ratio of 1:8, at 115 DEG C, react 18h, be chilled to room temperature after reaction terminates, after suction filtration, underpressure distillation obtains modified silane; Nitrogen is passed in reaction unit, then add 2 parts of modified silanes and 25 parts of anhydrous methanols by weight, at 35 DEG C, add 3.5 parts of epoxy chloropropane, reaction 2h, be down to room temperature after reaction terminates, obtain described quaternary ammonium salt through rotary evaporation, anhydrous diethyl ether wash-out, vacuum-drying.
Embodiment 5
A kind of antibacterial flame-retardant polyurethane pouring sealant that the present invention proposes, its raw material comprises following component by weight: polyether glycol 185 parts, hexamethylene diisocyanate 30 parts, Methylcyclohexyl diisocyanate 40 parts, catalyzer 0.55 part, nano zine oxide 7 parts, nano titanium oxide 6 parts, nano-aluminum hydroxide 4.5 parts, organic modification montmonrillonite 5.8 parts, carbon nanotube 8 parts, palmityl trimethyl ammonium chloride 3 parts, nanometer silver 3.6 parts, bamboo charcoal powder 5.6 parts, quaternary ammonium salt 12 parts, Tritolyl Phosphate 8 parts, dipropylene glycol dibenzoate 10 parts, dipropyl phthalic diol ester 10 parts, oxine ketone 2 parts, vinyl-terminated silicone fluid 8.5 parts, vinyltriethoxysilane-platinum complex 4 parts,
Wherein, described catalyzer is that dibutyl tin laurate, stannous octoate, stannous oleate are by weight the mixture for 1:4:3;
The median size of described nano zine oxide is 30nm; The median size of described nano titanium oxide is 45nm; The median size of described nano-aluminum hydroxide is 20nm; The median size of described nanometer silver is 15nm;
Described quaternary ammonium salt is prepared according to following technique: in autoclave, pass into nitrogen, then γ-chloropropyl triethoxysilane and diisopropanolamine (DIPA) is added by the mol ratio of 1.5:5, at 120 DEG C, react 15h, be chilled to room temperature after reaction terminates, after suction filtration, underpressure distillation obtains modified silane; Nitrogen is passed in reaction unit, then add 3 parts of modified silanes and 20 parts of anhydrous methanols by weight, at 40 DEG C, add 3.2 parts of epoxy chloropropane, reaction 3h, be down to room temperature after reaction terminates, obtain described quaternary ammonium salt through rotary evaporation, anhydrous diethyl ether wash-out, vacuum-drying.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (8)
1. an antibacterial flame-retardant polyurethane pouring sealant, it is characterized in that, its raw material comprises following component by weight: polyether glycol 150-200 part, hexamethylene diisocyanate 20-35 part, Methylcyclohexyl diisocyanate 30-45 part, catalyzer 0.2-0.6 part, nano zine oxide 3-10 part, nano titanium oxide 2-8 part, nano-aluminum hydroxide 2-6 part, organic modification montmonrillonite 3-8 part, carbon nanotube 2-10 part, palmityl trimethyl ammonium chloride 1-5 part, nanometer silver 1-5 part, bamboo charcoal powder 2-8 part, quaternary ammonium salt 8-15 part, Tritolyl Phosphate 3-12 part, dipropylene glycol dibenzoate 5-15 part, dipropyl phthalic diol ester 8-15 part, oxine ketone 1-2.5 part, vinyl-terminated silicone fluid 5-15 part, vinyltriethoxysilane-platinum complex 2-8 part.
2. antibacterial flame-retardant polyurethane pouring sealant according to claim 1, it is characterized in that, in its raw material, the weight ratio of polyether glycol, hexamethylene diisocyanate, Methylcyclohexyl diisocyanate is 170-190:26-33:36-42.
3. antibacterial flame-retardant polyurethane pouring sealant according to claim 1 or 2, it is characterized in that, its raw material comprises following component by weight: polyether glycol 180-186 part, hexamethylene diisocyanate 29-31 part, Methylcyclohexyl diisocyanate 38-41 part, catalyzer 0.5-0.6 part, nano zine oxide 6.5-7.2 part, nano titanium oxide 5.6-6.2 part, nano-aluminum hydroxide 4.3-5 part, organic modification montmonrillonite 5.5-6 part, carbon nanotube 7-9 part, palmityl trimethyl ammonium chloride 2.6-3.1 part, nanometer silver 3-4 part, bamboo charcoal powder 5.3-6 part, quaternary ammonium salt 10-13 part, Tritolyl Phosphate 6-9 part, dipropylene glycol dibenzoate 8-11 part, dipropyl phthalic diol ester 9-12 part, oxine ketone 1.6-2.1 part, vinyl-terminated silicone fluid 8-10 part, vinyltriethoxysilane-platinum complex 3.5-5 part.
4. antibacterial flame-retardant polyurethane pouring sealant according to any one of claim 1-3, it is characterized in that, its raw material comprises following component by weight: polyether glycol 185 parts, hexamethylene diisocyanate 30 parts, Methylcyclohexyl diisocyanate 40 parts, catalyzer 0.55 part, nano zine oxide 7 parts, nano titanium oxide 6 parts, nano-aluminum hydroxide 4.5 parts, organic modification montmonrillonite 5.8 parts, carbon nanotube 8 parts, palmityl trimethyl ammonium chloride 3 parts, nanometer silver 3.6 parts, bamboo charcoal powder 5.6 parts, quaternary ammonium salt 12 parts, Tritolyl Phosphate 8 parts, dipropylene glycol dibenzoate 10 parts, dipropyl phthalic diol ester 10 parts, oxine ketone 2 parts, vinyl-terminated silicone fluid 8.5 parts, vinyltriethoxysilane-platinum complex 4 parts.
5. antibacterial flame-retardant polyurethane pouring sealant according to any one of claim 1-4, it is characterized in that, described quaternary ammonium salt is prepared according to following technique: in autoclave, pass into nitrogen, then γ-chloropropyl triethoxysilane and diisopropanolamine (DIPA) is added by the mol ratio of 1-2:3-8,10-18h is reacted at 115-125 DEG C, be chilled to room temperature after reaction terminates, after suction filtration, underpressure distillation obtains modified silane; Nitrogen is passed in reaction unit, then add 2-5 part modified silane and 10-25 part anhydrous methanol by weight, at 35-45 DEG C, add 2-3.5 part epoxy chloropropane, reaction 2-5h, be down to room temperature after reaction terminates, obtain described quaternary ammonium salt through rotary evaporation, anhydrous diethyl ether wash-out, vacuum-drying.
6. antibacterial flame-retardant polyurethane pouring sealant according to any one of claim 1-5, it is characterized in that, described quaternary ammonium salt is prepared according to following technique: in autoclave, pass into nitrogen, then γ-chloropropyl triethoxysilane and diisopropanolamine (DIPA) is added by the mol ratio of 1.5:5,15h is reacted at 120 DEG C, be chilled to room temperature after reaction terminates, after suction filtration, underpressure distillation obtains modified silane; Nitrogen is passed in reaction unit, then add 3 parts of modified silanes and 20 parts of anhydrous methanols by weight, at 40 DEG C, add 3.2 parts of epoxy chloropropane, reaction 3h, be down to room temperature after reaction terminates, obtain described quaternary ammonium salt through rotary evaporation, anhydrous diethyl ether wash-out, vacuum-drying.
7. antibacterial flame-retardant polyurethane pouring sealant according to any one of claim 1-6, is characterized in that, described catalyzer is that dibutyl tin laurate, stannous octoate, stannous oleate are by weight the mixture for 1:4:3.
8. antibacterial flame-retardant polyurethane pouring sealant according to any one of claim 1-7, is characterized in that, the median size of described nano zine oxide is 20-35nm; The median size of described nano titanium oxide is 35-50nm; The median size of described nano-aluminum hydroxide is 15-30nm; The median size of described nanometer silver is 10-25nm.
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| CN110064419A (en) * | 2018-01-23 | 2019-07-30 | 中国石油天然气股份有限公司 | Naphtha reforming catalyst and preparation method thereof |
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| CN109880574A (en) * | 2019-03-06 | 2019-06-14 | 温州包鹿新材料有限公司 | Antibacterial flame-retardant modified glass glue and preparation method thereof |
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