CN105001755A - Brucite fiber reinforced nanopore super thermal insulation coating and preparation method therefor - Google Patents
Brucite fiber reinforced nanopore super thermal insulation coating and preparation method therefor Download PDFInfo
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- CN105001755A CN105001755A CN201510393561.7A CN201510393561A CN105001755A CN 105001755 A CN105001755 A CN 105001755A CN 201510393561 A CN201510393561 A CN 201510393561A CN 105001755 A CN105001755 A CN 105001755A
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Abstract
A brucite fiber reinforced nanopore super thermal insulation coating is prepared from the following raw materials in parts by weight: 34-38 parts of ethyl orthosilicate, a proper amount of hydrochloric acid, ammonia water, ethanol and deionized water, 4-5 parts of trimethylchlorosilane, 1-1.5 parts of 3-aminopropylsilanetriol, 0.2-0.3 part of glycidyl 3-(trimethoxysilyl)propyl ether, 2-3 parts of dimethylbenzene, 0.6-0.8 part of brucite fiber, 0.8-1.2 parts of triethyl citrate, 70-75 parts of E-12 epoxy resin, 9-12 parts of 1,4-butanediol diglycidyl ether and 6.5-7.6 parts of triethanolamine. According to the brucite fiber reinforced nanopore super thermal insulation coating provided by the invention, silicon dioxide aerogel microspheres are reinforced by the brucite fiber. Epoxidation treatment is carried out on the surface of the brucite fiber, so that the cohesive property of the microspheres and epoxy resin is increased, the microspheres are prevented from being separated from a film, the water absorption is reduced, the broken microspheres are reduced, and the coating film is robust and wear-resistant and extremely good in insulation property.
Description
Technical field
The present invention relates to thermal insulation coatings field, particularly relate to a kind of brucite fiber and strengthen nanoporous superthermal insulation thermal insulation coatings and preparation method thereof.
Background technology
Aerosil has nanoaperture, is a kind of porous solid material, has low density, the constructional feature of high porosity, have superthermal insulation performance.Utilize silica aerosil microballoon and coating membrane-forming materials combine, form the coating with super heat-insulating property.
Current aerosil utilizes sol-gel method mostly, by silicon source hydrolysis preparations such as tetraethoxys, the aerosil obtained the thus very easily moisture absorption, chance water ftractures, nano-pore structure is caused to be destroyed, affect the performance of aerogel, therefore in preparation process, usually will carry out necessary hydrophobically modified to silica dioxide gel, strengthen the hydrophobicity of aerogel.Its main means adopt specific hydrophobic modifier, silicone hydroxyl hydrophilic in silica wet gel is replaced with methyl, the non-polar group that methylene radical etc. are hydrophobic, thus strengthen the hydrophobicity of gelinite, the material being commonly used for hydrophobic modifier has trimethylchlorosilane, dimethyldiethoxysilane, methyl disilazane, methyltrimethoxy silane etc.
Crossing hydrophobic silica aerosil microballoon is a kind of good lagging material, but because its surface is containing a large amount of non-polar groups, the poor compatibility when it mixes with aqueous polymer systems, interface resistance is large, aerogel microball dispersion is simultaneously uneven, very easily reunites, causes the degradation of matrix material, therefore, suitable modification must be carried out to hydrophobic silica aerogel microballoon.
Aerosil airsetting colloid is crisp frangible, intensity is low, the performances such as resistance to compression are strong not, easily lose heat-insulating property, dimension needs the intensity increasing aerosil, and the method increasing aerosil intensity has interpolation skeleton, exactly modification is carried out to it in addition, increase the strength of joint between its molecule, also need other performances improving aerogel, as performances such as resistance to ultraviolets.Utilize aerosil to be combined the coating making high heat preservation performance with high-molecular coating, can mass energy be saved, also need to solve aerogel and high molecular bonding strength, just need to carry out suitable modification to aerogel.
Summary of the invention
The object of the present invention is to provide a kind of brucite fiber to strengthen nanoporous superthermal insulation thermal insulation coatings and preparation method thereof, this paint film is solid wear-resisting, and heat-insulating property is fabulous.
Technical scheme of the present invention is as follows:
A kind of brucite fiber strengthens nanoporous superthermal insulation thermal insulation coatings, it is characterized in that being made up of the raw material of following weight part: tetraethoxy 34-38, hydrochloric acid are appropriate, ammoniacal liquor is appropriate, appropriate amount of ethanol, deionized water are appropriate, trimethylchlorosilane 4-5,3-aminopropyl ortho-siliformic acid 1-1.5,3-glycydoxy Trimethoxy silane 0.2-0.3, dimethylbenzene 2-3, brucite fiber 0.6-0.8, triethyl citrate 0.8-1.2, E-12 epoxy resin 70-75, BDDE 9-12, trolamine 6.5-7.6;
Described brucite fiber strengthens the preparation method of nanoporous superthermal insulation thermal insulation coatings, it is characterized in that comprising the following steps:
(1) 3-glycydoxy Trimethoxy silane is mixed with dimethylbenzene, stir, add brucite fiber, be heated to 90-100 DEG C, stirring reaction 3-4 hour, filter, dry, obtain modification brucite fiber;
(2) by tetraethoxy: ethanol: hydromassage that is than 1:(8-12): (6-12) adds in container successively, under stirring at 350-400 rev/min, add hydrochloric acid alcoholic solution, adjustment pH value is 2-3, stir 10-13 hour, add the modification brucite fiber that (1) step obtains, mix, then add ammoniacal liquor alcoholic solution, adjustment pH value is 7-8.5, continue to stir 1-2 hour, pour mould into, at room temperature seal and leave standstill, form silica dioxide gel, carry out atomization process, obtain silica gel microspheres, particle diameter is at 1-300 μm; Described hydrochloric acid alcoholic solution is hydrochloric acid: ethanol contend ratio=1:49, and ammoniacal liquor alcoholic solution is ammoniacal liquor: ethanol contend ratio=1:49;
(3) get the ethanol of 30-40 weight part, add trimethylchlorosilane, stir, then add in silica gel microspheres, stir, aging two days at normal temperatures, by ethanol and deionized water by volume 1:1 mix, obtain aqueous ethanolic solution, get the aqueous ethanolic solution of 3 times of weight of silica gel microspheres, cleaning gel micro-ball 3 times, add 3-aminopropyl ortho-siliformic acid, stir, place 20-30 minute, at supercritical CO
2dry under condition, obtain improved silica aerogel microball;
(4) other remaining components are mixed, stir, then add the improved silica aerogel microball that (3) step obtains, stir, to obtain final product.
Beneficial effect of the present invention
Silica aerosil microballoon of the present invention make use of brucite fiber and strengthens, epoxidation process has been carried out on this brucite fiber surface, add the cohesiveness of microballoon and epoxy resin, prevent and be coated with membrane sepn, reduce water-absorbent, decrease microballoon fragmentation, paint film is solid wear-resisting, and heat-insulating property is fabulous.
Embodiment
A kind of brucite fiber strengthens nanoporous superthermal insulation thermal insulation coatings, be made up of the raw material of following weight part (kilogram): tetraethoxy 36, hydrochloric acid are appropriate, ammoniacal liquor is appropriate, appropriate amount of ethanol, deionized water appropriate, trimethylchlorosilane 4.5,3-aminopropyl ortho-siliformic acid 1.3,3-glycydoxy Trimethoxy silane 0.2, dimethylbenzene 2.5, brucite fiber 0.7, triethyl citrate 1, E-12 epoxy resin 73, BDDE 11, trolamine 7;
Described brucite fiber strengthens the preparation method of nanoporous superthermal insulation thermal insulation coatings, comprises the following steps:
(1) 3-glycydoxy Trimethoxy silane is mixed with dimethylbenzene, stir, add brucite fiber, be heated to 96 DEG C, stirring reaction 3.5 hours, filter, dry, obtain modification brucite fiber;
(2) by tetraethoxy: ethanol: hydromassage that adds in container successively than 1:10:9, under stirring at 350-400 rev/min, add hydrochloric acid alcoholic solution, pH value is regulated to be 2, stir 11 hours, add the modification brucite fiber that (1) step obtains, mix, then add ammoniacal liquor alcoholic solution, pH value is regulated to be 8, continue stirring 1 hour, pour mould into, at room temperature seal and leave standstill, form silica dioxide gel, carry out atomization process, obtain silica gel microspheres, particle diameter is at 1-300 μm; Described hydrochloric acid alcoholic solution is hydrochloric acid: ethanol contend ratio=1:49, and ammoniacal liquor alcoholic solution is ammoniacal liquor: ethanol contend ratio=1:49;
(3) get the ethanol of 35 weight parts, add trimethylchlorosilane, stir, then add in silica gel microspheres, stir, aging two days at normal temperatures, by ethanol and deionized water by volume 1:1 mix, obtain aqueous ethanolic solution, get the aqueous ethanolic solution of 3 times of weight of silica gel microspheres, cleaning gel micro-ball 3 times, add 3-aminopropyl ortho-siliformic acid, stir, place 25 minutes, at supercritical CO
2dry under condition, obtain improved silica aerogel microball;
(4) other remaining components are mixed, stir, then add the improved silica aerogel microball that (3) step obtains, stir, to obtain final product.
Experimental data
The applying coating of this embodiment is on steel plate, and thickness is 3mm, and thermal conductivity is 0.033W/mk(25 DEG C of environment after testing), film ablation surplus is 96%, resistance to 83 washings.
Claims (2)
1. a brucite fiber strengthens nanoporous superthermal insulation thermal insulation coatings, it is characterized in that being made up of the raw material of following weight part: tetraethoxy 34-38, hydrochloric acid are appropriate, ammoniacal liquor is appropriate, appropriate amount of ethanol, deionized water are appropriate, trimethylchlorosilane 4-5,3-aminopropyl ortho-siliformic acid 1-1.5,3-glycydoxy Trimethoxy silane 0.2-0.3, dimethylbenzene 2-3, brucite fiber 0.6-0.8, triethyl citrate 0.8-1.2, E-12 epoxy resin 70-75, BDDE 9-12, trolamine 6.5-7.6.
2. brucite fiber strengthens the preparation method of nanoporous superthermal insulation thermal insulation coatings according to claim 1, it is characterized in that comprising the following steps:
(1) 3-glycydoxy Trimethoxy silane is mixed with dimethylbenzene, stir, add brucite fiber, be heated to 90-100 DEG C, stirring reaction 3-4 hour, filter, dry, obtain modification brucite fiber;
(2) by tetraethoxy: ethanol: hydromassage that is than 1:(8-12): (6-12) adds in container successively, under stirring at 350-400 rev/min, add hydrochloric acid alcoholic solution, adjustment pH value is 2-3, stir 10-13 hour, add the modification brucite fiber that (1) step obtains, mix, then add ammoniacal liquor alcoholic solution, adjustment pH value is 7-8.5, continue to stir 1-2 hour, pour mould into, at room temperature seal and leave standstill, form silica dioxide gel, carry out atomization process, obtain silica gel microspheres, particle diameter is at 1-300 μm; Described hydrochloric acid alcoholic solution is hydrochloric acid: ethanol contend ratio=1:49, and ammoniacal liquor alcoholic solution is ammoniacal liquor: ethanol contend ratio=1:49;
(3) get the ethanol of 30-40 weight part, add trimethylchlorosilane, stir, then add in silica gel microspheres, stir, aging two days at normal temperatures, by ethanol and deionized water by volume 1:1 mix, obtain aqueous ethanolic solution, get the aqueous ethanolic solution of 3 times of weight of silica gel microspheres, cleaning gel micro-ball 3 times, add 3-aminopropyl ortho-siliformic acid, stir, place 20-30 minute, at supercritical CO
2dry under condition, obtain improved silica aerogel microball;
(4) other remaining components are mixed, stir, then add the improved silica aerogel microball that (3) step obtains, stir, to obtain final product.
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| CN201510393561.7A CN105001755A (en) | 2015-07-08 | 2015-07-08 | Brucite fiber reinforced nanopore super thermal insulation coating and preparation method therefor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105754558A (en) * | 2016-04-08 | 2016-07-13 | 东南大学 | Anti-leakage and flame-retardant type composite phase change material and preparation method thereof |
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| JP4955335B2 (en) * | 2006-08-07 | 2012-06-20 | 一般財団法人石油エネルギー技術センター | Anticorrosion paint and metal material coated with the same |
| CN104478395A (en) * | 2014-11-14 | 2015-04-01 | 刘吉海 | Composite SiO2 aerogel heat insulation material and preparation method thereof |
| CN104610846A (en) * | 2015-02-03 | 2015-05-13 | 芜湖市宝艺游乐科技设备有限公司 | Anti-UV super thermal insulation coating and preparation method thereof |
| CN104629583A (en) * | 2015-02-03 | 2015-05-20 | 芜湖市宝艺游乐科技设备有限公司 | Super heat insulation coating containing polyimide aerogel microspheres and preparation method thereof |
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- 2015-07-08 CN CN201510393561.7A patent/CN105001755A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4955335B2 (en) * | 2006-08-07 | 2012-06-20 | 一般財団法人石油エネルギー技術センター | Anticorrosion paint and metal material coated with the same |
| CN104478395A (en) * | 2014-11-14 | 2015-04-01 | 刘吉海 | Composite SiO2 aerogel heat insulation material and preparation method thereof |
| CN104610846A (en) * | 2015-02-03 | 2015-05-13 | 芜湖市宝艺游乐科技设备有限公司 | Anti-UV super thermal insulation coating and preparation method thereof |
| CN104629583A (en) * | 2015-02-03 | 2015-05-20 | 芜湖市宝艺游乐科技设备有限公司 | Super heat insulation coating containing polyimide aerogel microspheres and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105754558A (en) * | 2016-04-08 | 2016-07-13 | 东南大学 | Anti-leakage and flame-retardant type composite phase change material and preparation method thereof |
| CN105754558B (en) * | 2016-04-08 | 2019-07-12 | 东南大学 | A kind of anti-leak, flame retardant type composite phase-change material and preparation method thereof |
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