CN103911687A - Preparation method for modified alumina fiber used for heat-insulation anticorrosive coating - Google Patents

Preparation method for modified alumina fiber used for heat-insulation anticorrosive coating Download PDF

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CN103911687A
CN103911687A CN201410061541.5A CN201410061541A CN103911687A CN 103911687 A CN103911687 A CN 103911687A CN 201410061541 A CN201410061541 A CN 201410061541A CN 103911687 A CN103911687 A CN 103911687A
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preparation
heat
alumina fiber
modified oxidized
carrying
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牛双蛟
尹荔松
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Wuyi University
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Abstract

The invention discloses a preparation method for a modified alumina fiber used for a heat-insulation anticorrosive coating. The preparation method comprises the following steps: (1) adding distilled water into a beaker, carrying out magnetic stirring at normal temperature, adding aluminum nitrate and urea and allowing aluminum nitrate and urea to be completely dissolved so as to obtain a mixed liquid; (2) slowly adding a surfactant and carrying out uniform mixing with stirring; (3) pouring the mixed liquid prepared in the step (2) into a hydro-thermal reaction vessel so as to obtain a white precipitate; (4) washing the white precipitate a plurality of times and successively carrying out ultrasonic treatment, pumping filtration, drying and grinding so as to obtain white powder; (5) putting the white powder into a corundum crucible and carrying out high temperature calcining in a high temperature furnace so as to obtain an alumina fiber with a certain length-diameter ratio; (6) mixing the alumina fiber with a coupling agent and toluene, carrying out electric stirring and reflux and then successively carrying out centrifugation, washing and drying so as to obtain a pretreated alumina fiber; and (7) mixing the pretreated alumina fiber with an epoxy resin and diglycol and carrying out electric stirring and reflux so as to obtain the modified alumina fiber. The modified alumina fiber has a high length-diameter ratio.

Description

A kind of preparation method of the modified oxidized aluminum fiber for heat-insulating anti-corrosive coating
Technical field
The present invention relates to a kind of preparation method of the modified oxidized aluminum fiber for heat-insulating anti-corrosive coating, relate in particular to a kind of products obtained therefrom and there is corrosion resistance, be applied to matrix surface effect of heat insulation obvious, toughness is high, the preparation method of the modified oxidized aluminum fiber that corrosion resistance is strong, draw ratio is high.
Background technology
On the solar radiation storage tank such as chemical industry, oil out of doors, even if generally adopt aluminium paint anticorrosion, its surface temperature still can reach 60~70 DEG C, and the design of the storage tanks such as propylene, liquefied gas is saturated vapour pressure during taking 50 DEG C as foundation, therefore in the time that exceeding 30 DEG C, temperature will carry out chilling spray to tank body, to reduce material volatilization, ensure storage tank safety.But water spray had both been wasted power and water, aggravate again tank body corrosion.Although developed in recent years heat-insulating anti-corrosive coating, heat-proof quality still needs to improve, and the combination properties such as the feature of environmental protection, adhesive force, corrosion-resistant, weatherability are further improved.
Alumina fibre has the performances such as corrosion resistance, high temperature resistant, high strength, high-modulus, there is high reflectance at solar spectrum wave band, by composite modified for coating to itself and epoxy resin, can improve intensity, heat-resisting quantity, the corrosion resistance of coating matrix, reduce coated article surface temperature, solve coating material because of the problem containing a large amount of organic solvent contaminated environment simultaneously.Use this coating of modified oxidized aluminum fiber also to there is the features such as strong adhesion, weather resistance be good.
Summary of the invention
Technical problem to be solved by this invention is the defect that overcomes prior art, a kind of preparation method of the modified oxidized aluminum fiber for heat-insulating anti-corrosive coating is provided, the modified oxidized aluminum fiber of preparation has the performances such as corrosion resistance, high temperature resistant, anti-combustion, high strength, high-modulus, the technology content that this preparation method has overcome the existing alumina fibre preparation method existence of China is not high, the defect problem that product grade is low, meets the modern industry requirement that becomes more meticulous as much as possible.It is high that this method is prepared products obtained therefrom draw ratio, is applied to matrix surface effect of heat insulation obvious, and toughness is high, and corrosion resistance is strong, strong adhesion, and weather resistance is good.
The technical solution adopted for the present invention to solve the technical problems is: a kind of preparation method of the modified oxidized aluminum fiber for heat-insulating anti-corrosive coating, comprises the following steps:
(1) measuring 30~50ml distilled water with graduated cylinder joins in 250ml beaker, be put into normal temperature magnetic agitation on magnetic stirring apparatus, rotating speed is controlled at 200~300r/min, taking aluminum nitrate 0.01~0.03mol with electronic balance joins in 250ml beaker, until dissolve completely, then take urea 0.05~0.3mol and add in beaker, until dissolve completely, obtain mixing material;
(2) take 0.05~0.3mmol surfactant and slowly add in step (1) 250ml beaker, stir;
(3) mixing material step (2) being made is poured 80ml hydrothermal reaction kettle into, puts into electric furnace, at 140~220 DEG C, reacts 12~36h, obtains white depositions;
(4) distilled water, the absolute ethanol washing for white depositions that step (3) are obtained are for several times, with the ultrasonic 5~20min of supersonic wave cleaning machine, for several times, the sediment then suction filtration being obtained is put into drying box to suction filtration, and at 80~100 DEG C, dry 16~24h obtains white powder after grinding;
(5) white powder is put into corundum crucible, put into high temperature furnace, be raised to 1200 DEG C from room temperature, 5 DEG C/min of programming rate is incubated 2h at 1200 DEG C, obtains having the alumina fibre of certain draw ratio;
(6) taking the alumina fibre 5.0g and the KH560 coupling agent 1.0~4.0g that obtain joins in the there-necked flask that fills 100ml toluene successively, electric stirring under 200~300r/min, 90~100 DEG C of 2~5h that reflux, centrifugal rear with acetone washing several, put into vacuum drying chamber vacuumize 1~3h, obtain preliminary treatment alumina fibre;
(7) preliminary treatment alumina fibre is joined in the flask that fills 50g epoxy resin, 0.1~1.0g diglycol, electric stirring under 300~500r/min, 80~100 DEG C of 1~3h that reflux, obtain modified oxidized aluminum fiber.
Further, in described step (1): the amount of distilled water is 36ml, magnetic agitation rotating speed is 260r/min, and the amount of aluminum nitrate and urea is respectively 0.02mol and 0.1mol, and inorganic aluminate can be more than one or more in aluminum nitrate, aluminium chloride, aluminum sulfate.
Further, in described step (2): the amount of surfactant is 0.1mmol, surfactant can be more than one or more in neopelex, Macrogol 6000, polyvinylpyrrolidone, softex kw, lauryl sodium sulfate, dodecylphosphoric acid monoesters di-potassium, CMC.
Further, in described step (3): hydrothermal reaction kettle is put into SX2-4-13 type experimental electric furnace, temperature is controlled at 200 DEG C, and the reaction time is 24h.
Further, in described step (4): sediment is put into drying box, and temperature is controlled at 100 DEG C, and the reaction time is 24h.
Further, in described step (6): KH560 coupling dosage is 3.0g, the 2h that refluxes at 90 DEG C, rotating speed is 260r/min.
Further, in described step (7): in flask, the amount of diglycol is 0.2g, 80 DEG C of backflow 1h, rotating speed is 400r/min.
In sum, the modified oxidized aluminum fiber that utilizes the preparation method of a kind of modified oxidized aluminum fiber for heat-insulating anti-corrosive coating of the present invention to make has following advantage:
The alumina fibre particle diameter obtaining is 0.2~0.3 μ m>96%, draw ratio 30~35>90%, and specific area is 300>m 2/ g; The raising that adds the coating toughness of modified oxidized aluminum fiber and do not add is more than 40%, and impact strength improves more than 60%, and decay resistance improves more than 20%, and effect of heat insulation improves more than 15%.It is high that this method is prepared products obtained therefrom draw ratio, is applied to matrix surface effect of heat insulation obvious, and toughness is high, and corrosion resistance is strong, strong adhesion, and weather resistance is good.
Detailed description of the invention
By specific embodiment given below, can further have a clear understanding of the present invention.
Embodiment 1
The preparation method of a kind of modified oxidized aluminum fiber for heat-insulating anti-corrosive coating that the present embodiment 1 is described, comprises the following steps:
(1) measuring 36ml distilled water with graduated cylinder joins in 250ml beaker, be put into normal temperature magnetic agitation on magnetic stirring apparatus, rotating speed is controlled at 250r/min, taking aluminum nitrate 0.02mol with electronic balance joins in 250ml beaker, until dissolve completely, then take urea 0.2mol and add in 250ml beaker, until dissolve completely, obtain mixing material;
(2) take 0.1mmol surfactant polyethylene 6000 and slowly add in step (1) 250ml beaker, stir;
(3) mixing material step (2) being made is poured 80ml hydrothermal reaction kettle into, puts into SX2-4-13 type experimental electric furnace, at 200 DEG C, reacts 24h, obtains white depositions;
(4) distilled water, the absolute ethanol washing for white depositions that step (3) are obtained are for several times, with the ultrasonic 10min of supersonic wave cleaning machine, for several times, the sediment then suction filtration being obtained is put into drying box to suction filtration, and at 100 DEG C, dry 24h obtains white powder after grinding;
(5) white powder is put into corundum crucible, put into high temperature furnace, be raised to 1200 DEG C from room temperature, 5 DEG C/min of programming rate is incubated 2h at 1200 DEG C, obtains having the alumina fibre of certain draw ratio;
(6) taking the alumina fibre 5.0g and the KH560 coupling agent 3.0g that obtain joins in the there-necked flask that fills 100ml toluene successively, electric stirring under 250r/min, 90 DEG C of backflow 2h, centrifugal rear with acetone washing several, put into vacuum drying chamber vacuumize 1h, obtain preliminary treatment alumina fibre;
(7) preliminary treatment alumina fibre is joined in the flask that fills 50g epoxy resin, 0.1g diglycol, electric stirring under 400r/min, 80 DEG C of backflow 1h, obtain modified oxidized aluminum fiber.
Embodiment 2
The preparation method of a kind of modified oxidized aluminum fiber for heat-insulating anti-corrosive coating that the present embodiment 2 is described, comprises the following steps:
(1) measuring 30ml distilled water with graduated cylinder joins in 250ml beaker, be put into normal temperature magnetic agitation on magnetic stirring apparatus, rotating speed is controlled at 200r/min, taking aluminum nitrate 0.01mol with electronic balance joins in 250ml beaker, until dissolve completely, then take urea 0.05mol and add in 250ml beaker, until dissolve completely, obtain mixing material;
(2) take 0.05mmol surfactant polyethylene 6000 and slowly add in step (1) 250ml beaker, stir;
(3) mixing material step (2) being made is poured 80ml hydrothermal reaction kettle into, puts into SX2-4-13 type experimental electric furnace, at 140 DEG C, reacts 12h, obtains white depositions;
(4) distilled water, the absolute ethanol washing for white depositions that step (3) are obtained are for several times, with the ultrasonic 10min of supersonic wave cleaning machine, for several times, the sediment then suction filtration being obtained is put into drying box to suction filtration, and at 80 DEG C, dry 16h obtains white powder after grinding;
(5) white powder is put into corundum crucible, put into high temperature furnace, be raised to 1200 DEG C from room temperature, 5 DEG C/min of programming rate is incubated 2h at 1200 DEG C, obtains having the alumina fibre of certain draw ratio;
(6) taking the alumina fibre 5.0g and the KH560 coupling agent 1.0g that obtain joins in the there-necked flask that fills 100ml toluene successively, electric stirring under 200r/min, 90 DEG C of backflow 2h, centrifugal rear with acetone washing several, put into vacuum drying chamber vacuumize 1h, obtain preliminary treatment alumina fibre;
(7) preliminary treatment alumina fibre is joined in the flask that fills 50g epoxy resin, 0.1g diglycol, electric stirring under 200r/min, 80 DEG C of backflow 2h, obtain modified oxidized aluminum fiber.
Embodiment 3
The preparation method of a kind of modified oxidized aluminum fiber for heat-insulating anti-corrosive coating that the present embodiment 3 is described, comprises the following steps:
(1) measuring 50ml distilled water with graduated cylinder joins in 250ml beaker, be put into normal temperature magnetic agitation on magnetic stirring apparatus, rotating speed is controlled at 300r/min, taking aluminum nitrate 0.03mol with electronic balance joins in 250ml beaker, until dissolve completely, then take urea 0.3mol and add in 250ml beaker, until dissolve completely, obtain mixing material;
(2) take 0.3mmol surfactant polyethylene 6000 and slowly add in step (1) 250ml beaker, stir;
(3) mixing material step (2) being made is poured 80ml hydrothermal reaction kettle into, puts into SX2-4-13 type experimental electric furnace, and at 220 DEG C, anti-36h, obtains white depositions;
(4) distilled water, the absolute ethanol washing for white depositions that step (3) are obtained are for several times, with the ultrasonic 10min of supersonic wave cleaning machine, for several times, the sediment then suction filtration being obtained is put into drying box to suction filtration, and at 90 DEG C, dry 20h obtains white powder after grinding;
(5) white powder is put into corundum crucible, put into high temperature furnace, be raised to 1200 DEG C from room temperature, 5 DEG C/min of programming rate is incubated 2h at 1200 DEG C, obtains having the alumina fibre of certain draw ratio;
(6) taking the alumina fibre 5.0g and the KH560 coupling agent 4.0g that obtain joins in the there-necked flask that fills 100ml toluene successively, electric stirring under 300r/min, 100 DEG C of backflow 5h, centrifugal rear with acetone washing several, put into vacuum drying chamber vacuumize 3h, obtain preliminary treatment alumina fibre;
(7) treated alumina fibre is joined in the flask that fills 50g epoxy resin, 1.0g diglycol, electric stirring under 500r/min, 100 DEG C of backflow 2h, obtain modified oxidized aluminum fiber.
The above, be only preferred embodiment of the present invention, not technical scheme of the present invention done to any pro forma restriction.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all still belong in the scope of technical scheme of the present invention.

Claims (7)

1. for a preparation method for the modified oxidized aluminum fiber of heat-insulating anti-corrosive coating, it is characterized in that, comprise the following steps:
(1) measuring 30~50ml distilled water with graduated cylinder joins in 250ml beaker, be put into normal temperature magnetic agitation on magnetic stirring apparatus, rotating speed is controlled at 200~300r/min, taking aluminum nitrate 0.01~0.03mol with electronic balance joins in 250ml beaker, until dissolve completely, then take urea 0.05~0.3mol and add in beaker, until dissolve completely, obtain mixing material;
(2) take 0.05~0.3mmol surfactant and slowly add in step (1) 250ml beaker, stir;
(3) mixing material step (2) being made is poured 80ml hydrothermal reaction kettle into, puts into electric furnace, at 140~220 DEG C, reacts 12~36h, obtains white depositions;
(4) distilled water, the absolute ethanol washing for white depositions that step (3) are obtained are for several times, with the ultrasonic 5~20min of supersonic wave cleaning machine, for several times, the sediment then suction filtration being obtained is put into drying box to suction filtration, and at 80~100 DEG C, dry 16~24h obtains white powder after grinding;
(5) white powder is put into corundum crucible, put into high temperature furnace, be raised to 1200 DEG C from room temperature, 5 DEG C/min of programming rate is incubated 2h at 1200 DEG C, obtains having the alumina fibre of certain draw ratio;
(6) taking the alumina fibre 5.0g and the KH560 coupling agent 1.0~4.0g that obtain joins in the there-necked flask that fills 100ml toluene successively, electric stirring under 200~300r/min, 90~100 DEG C of 2~5h that reflux, centrifugal rear with acetone washing several, put into vacuum drying chamber vacuumize 1~3h, obtain preliminary treatment alumina fibre;
(7) preliminary treatment alumina fibre is joined in the flask that fills 50g epoxy resin, 0.1~1.0g diglycol, electric stirring under 300~500r/min, 80~100 DEG C of 1~3h that reflux, obtain modified oxidized aluminum fiber.
2. the preparation method of a kind of modified oxidized aluminum fiber for heat-insulating anti-corrosive coating according to claim 1, it is characterized in that, in described step (1): the amount of distilled water is 36ml, magnetic agitation rotating speed is 260r/min, the amount of aluminum nitrate and urea is respectively 0.02mol and 0.1mol, and inorganic aluminate can be more than one or more in aluminum nitrate, aluminium chloride, aluminum sulfate.
3. the preparation method of a kind of modified oxidized aluminum fiber for heat-insulating anti-corrosive coating according to claim 1, it is characterized in that, in described step (2): the amount of surfactant is 0.1mmol, surfactant can be more than one or more in neopelex, Macrogol 6000, polyvinylpyrrolidone, softex kw, lauryl sodium sulfate, dodecylphosphoric acid monoesters di-potassium, CMC.
4. the preparation method of a kind of modified oxidized aluminum fiber for heat-insulating anti-corrosive coating according to claim 1, it is characterized in that, in described step (3): hydrothermal reaction kettle is put into SX2-4-13 type experimental electric furnace, temperature is controlled at 200 DEG C, and the reaction time is 24h.
5. the preparation method of a kind of modified oxidized aluminum fiber for heat-insulating anti-corrosive coating according to claim 1, is characterized in that, in described step (4): sediment is put into drying box, and temperature is controlled at 100 DEG C, and the reaction time is 24h.
6. the preparation method of a kind of modified oxidized aluminum fiber for heat-insulating anti-corrosive coating according to claim 1, is characterized in that, in described step (6): KH560 coupling dosage is 3.0g, and the 2h that refluxes at 90 DEG C, rotating speed is 260r/min.
7. the preparation method of a kind of modified oxidized aluminum fiber for heat-insulating anti-corrosive coating according to claim 1, is characterized in that, in described step (7): in flask, the amount of diglycol is 0.2g, and 80 DEG C of backflow 1h, rotating speed is 400r/min.
CN201410061541.5A 2014-02-24 2014-02-24 Preparation method for modified alumina fiber used for heat-insulation anticorrosive coating Pending CN103911687A (en)

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CN111848058A (en) * 2020-08-17 2020-10-30 康亚男 Building energy-saving heat-insulating material and preparation method thereof
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Application publication date: 20140709