CN101948651A - Aluminium silicate nano composite insulation coating and preparation method thereof - Google Patents
Aluminium silicate nano composite insulation coating and preparation method thereof Download PDFInfo
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Abstract
The invention discloses an aluminium silicate nano composite insulation coating and a preparation method thereof. The composite insulation coating comprises the following components of 10 to 40% of nano aluminium silicate, 15 to 30% of vinegar acrylic emulsion or acrylic emulsion, 30 to 50% of water, 2 to 6% of nano silicon dioxide, 2 to 6% of nano aluminum oxide, 2 to 5% of nano zinc oxide, 2 to 5% of nano titanium oxide or titanium white, 0.1 to 2% of film forming assistant, 0.1 to 2% of defoaming agent, 0.1 to 2% of wet dispersing agent, 0.5 to 2% of antifreeze and 0.1 to 2% of flatting agent. The preparation method comprises the following steps of stirring the water, the nano aluminium silicate, the wet dispersing agent and a half of the defoaming agent at high speed in a low speed stirring mode to be fully dispersed; adding other inorganic nano powder in the course of stirring; stirring on a multi-function disperser at high speed; slowly adding the emulsion at low stirring speed; adding the rest defoaming agent, the film forming assistant, the antifreeze and the flatting agent to be stirred at low speed; and finally canning to prepare the finished coating product. The invention can ensure that the surface of building materials is coated with a layer of coating of the thickness lower than 1mm; the heat conductivity coefficient of the building materials coated with the coating is reduced by 0.07 W/m.K when the temperature is 100 DEG C relative to the building materials without the coating.
Description
Technical field
The invention belongs to the lagging material preparing technical field, be specifically related to a kind of pure aluminium silicate nano composite heat insulation coating and preparation method thereof.
Background technology
The water-based energy-saving coatings is low, the production and construction safety of a kind of organic volatile content, and nonflammable, avirulent green coating meets the modern development direction of coating technology, society, environment and economic benefit height.Therefore, the water-based energy-saving coatings has great importance applying aspect equipment and the building.Advantages such as easy to use because of the heat-insulation and heat-preservation material in equipment, the energy-saving building materials, good heat-insulation effect and economically feasible more and more are subjected to people's favor, and development prospect is wide, will be expected to promote the expansion of coating market and lagging material Application Areas.
Nanotechnology and nano raw material are applied in the coating, can utilize two vegetables principles of lotus leaf and nano effects such as " zero convection current ", improve heat insulation property, water tolerance and the anti-fungi performance of coating.Pure aluminium silicate is a kind of good high temperature resistant, material that heat-proof quality is good, and the nanometer pure aluminium silicate is not owing to little, the narrow diameter distribution of particle diameter, have the precipitated and separated phenomenon, so suspension stability is good, can improve simultaneously the dispersiveness and the fineness index of coating, make coating appearance, glossiness, hardness and dispersiveness that good effect all be arranged.In coating, adopt the nanometer pure aluminium silicate, can make coating produce nano effects such as " zero convection current ", greatly reduce the thermal heat transfer capability of material, can be used as a kind of good heat-insulation and heat-preservation material, remedy that the water-absorbent that exists in traditional heat insulating coating material for wall is big, easily aging, volumetric shrinkage causes the low and hollowing cracking of product later strength to reduce phenomenons such as thermal insulation coatings performance greatly, easily, it is inflammable simultaneously to have remedied polyphenylene granule heat-insulating coating again, defectives such as fire line difference high temperature generation obnoxious flavour and Nai Hou are low, and bounce-back property is big.In addition, moulding is firm, cohesive force is strong, easy construction is fast, effective reduction of erection time, and be not subjected to the restriction of warmed body geometrical shape, be specially adapted to the inner, external wall insulation of buildings, various device is as supply air system under the central air-conditioning and special-shaped surfaces insulation, can stop the traditional material slit and reveal and expended energy, constitute integral sealing.
At present, what play insulation effect in most equipment and the building heat preserving coating mainly is compositions such as porous plastics, pearlstone and cenosphere, utilize the hole and the gap between particles of granule interior, stop the transmission and the radiative transfer of hot-fluid, and obtained certain heat insulation effect.But, only depend on above-mentioned different materials obviously can not satisfy the demands along with the energy-conservation requirement of country to equipment and buildings.(number of patent application: mainly be to be raw material with micron-sized silicon oxide, magnesium oxide, aluminum oxide 200810230718.4), raw material need be pulverized grinding to Chinese invention patent " a kind of powdery composite insulation paint ", and production process is complicated.(patent No.: 87102864) raw material of Cai Yonging mainly is the fibrous material of aqueous neusilin to Chinese invention patent " composite silicate thermal insulation paint and production method thereof ".Also someone's method of adding nano-component improves the quality of coating, it as the patent No. 03118030.2 patent of invention, it just is base-material with the pure-acrylic emulsion, add nano level zinc oxide, silicon oxide and titanium oxide etc., though have wash-resistant property, antibiosis and self-cleaning functions preferably, but heat insulating effect is relatively poor, and production process is also complicated.
Summary of the invention
The objective of the invention is by being selected to the good base-material of film properties, rational auxiliary agent of the selection of science and filler, and feed composition is optimized design, introduce the functional nano component, provide a kind of production technique simple, nano-component and emulsion, auxiliary agent and filler component have good consistency, dispersiveness and stable, and have pure aluminium silicate nano composite heat insulation coating of good heat insulation property, abrasion resistance and antibiosis and self-cleaning functions and preparation method thereof.Smear the coating that a layer thickness is lower than 1mm on the surface of material of construction, with respect to the material of construction of daub not, in the time of 100 ℃, its thermal conductivity can reduce 0.07W/mK.
The composition and the mass percent thereof of pure aluminium silicate nano composite heat insulation coating provided by the present invention are as follows:
Nanometer pure aluminium silicate 10-40%, acrylate and vinyl acetate emulsion or benzene emulsion 15-30%, water 30-50%, nano silicon 2-6%, nano aluminium oxide 2-6%, nano zine oxide 2-5%, nanometer titanium dioxide 2-5%, film coalescence aid 0.1-2%, defoamer 0.1-2%, wetting dispersing agent 0.1-2%, frostproofer 0.5-2%, flow agent 0.1-2%.
The preparation method of pure aluminium silicate nano composite heat insulation coating of the present invention is as follows:
Under stirring at low speed earlier with water, nanometer pure aluminium silicate, wetting dispersing agent, half defoamer high-speed stirring 1-3 hour, make it abundant dispersion, under agitation add inorganic nanometer powder: nano silicon, nano aluminium oxide, nano zine oxide, nanometer titanium dioxide, on multi-functional dispersion machine high-speed stirring 1-3 hour, it is uniformly dispersed by high speed shear.Slowly drip emulsion then under low stirring velocity, added remaining defoamer, film coalescence aid, frostproofer, flow agent stirring at low speed subsequently 3-10 hour, last tinning promptly gets the coating finished product.
Inorganic nanometer powder of the present invention: the size of nano silicon, nano aluminium oxide, nano zine oxide, nanometer titanium dioxide is lower than 100 nanometers.
The solid content of acrylate and vinyl acetate emulsion of the present invention or benzene emulsion is greater than 40%, less than 60%, minimum film-forming temperature 1-10 ℃.
Wetting dispersing agent of the present invention is 10% sodium hexametaphosphate solution.
Film coalescence aid of the present invention is 2,2,4-trimethylammonium-1.3 pentanediol only son acid esters.
Frostproofer of the present invention is an ethylene glycol.
Defoamer of the present invention is a tributyl phosphate.
Flow agent of the present invention is a urethane.
Preparation process of the present invention adopts multi-functional dispersion machine to stir.
The present invention is by selecting rational function nano component and filler, with the nanometer pure aluminium silicate is basic nano raw material, nano-component is carried out the composition optimization design, adopt multi-functional dispersion machine that nano-component is carried out long dispersion treatment, can guarantee the abundant dispersion of nano-component, can make nano-component and emulsion, auxiliary agent and filler in the coating have good consistency and stability.Except adding has the nanometer pure aluminium silicate of better heat preservation and insulation, also design adds multiple functional nano-component, the synergy and the performance complement of each nano-component can have been given play to, the deficiency that weakens or avoided one-component to cause has improved the over-all propertieies such as heat insulating characteristic, abrasion resistance and self-cleaning antibacterial of coating.Preparation process of the present invention is simple, raw materials used all to be the nano-oxide of using always, having produced in batches, raw material sources are abundant, the equal environmentally safe of raw material and preparation process, the development of modern industry direction of compliance with environmental protection requirements, can realize the low-cost mass preparation of pure aluminium silicate nano composite heat insulation coating, be a kind of high-performance and multifunction green insulation environment-friendly type coating.
Description of drawings
Fig. 1 is the XRD diffracting spectrum of the pure aluminium silicate nano composite heat insulation coating of the present invention's preparation.
By retrieval, the pure aluminium silicate nano composite heat insulation coating of the present invention's preparation is made of mutually multiple thing as can be known, pure aluminium silicate (the JCPDS card that mainly comprises three biassed fabrics, card number: 25-0021), aluminum oxide (the JCPDS card of diamond structure, card number: 46-1212), oblique silicon-dioxide (the JCPDS card of square structure, card number: 42-1401), the titanium dioxide of tetragonal (JCPDS card, card number: 65-1118), zinc oxide (JCPDS card, the card number: 36-1451) of hexagonal structure.
Fig. 2 is the SEM image of the benzene emulsion pure aluminium silicate nano composite heat insulation coating of the present invention's preparation.
Can find out the surface compact of benzene emulsion pure aluminium silicate nano composite heat insulation coating from Fig. 2 (a), the SEM image of higher multiple (Fig. 2 (b)) demonstration particle size is a nano level.
Fig. 3 is the SEM image of the acrylate and vinyl acetate emulsion pure aluminium silicate nano composite heat insulation coating of the present invention's preparation.
Can find out from Fig. 3 (a) to be similar to benzene emulsion pure aluminium silicate nano composite heat insulation coating that the surface compact of acrylate and vinyl acetate emulsion pure aluminium silicate nano thermal insulation coating, the SEM image of higher multiple (Fig. 3 (b)) show that particulate is of a size of nano level.
Embodiment
Embodiment 1: the mass percent of determining the pure aluminium silicate nano composite heat insulation coating is composed as follows: nanometer pure aluminium silicate 15%, acrylate and vinyl acetate emulsion 25%, water 41%, nano silicon 6%, nano aluminium oxide 3%, nano zine oxide 3%, nano-titanium oxide 3%, film coalescence aid 0.5%, defoamer 1%, wetting dispersing agent 1%, frostproofer 1%, flow agent 0.5%.Preparation process is as follows: under stirring at low speed earlier with water, nanometer pure aluminium silicate, wetting dispersing agent, half defoamer high-speed stirring 2 hours, make it abundant dispersion, under agitation add other inorganic nanometer powders, high-speed stirring is 3 hours on multi-functional dispersion machine, by high speed shear it is uniformly dispersed.Slowly drip emulsion then under low stirring velocity, added remaining defoamer, film coalescence aid, frostproofer, flow agent stirring at low speed subsequently 3 hours, last tinning promptly gets the coating finished product.
Embodiment 2: the mass percent of determining the pure aluminium silicate nano composite heat insulation coating is composed as follows: nanometer pure aluminium silicate 20%, benzene emulsion 25%, water 38%, nano silicon 5%, nano aluminium oxide 2%, nano zine oxide 3%, nano-titanium oxide 3%, film coalescence aid 0.5%, defoamer 1%, wetting dispersing agent 1%, frostproofer 1%, flow agent 0.5%.Preparation process is as follows: under stirring at low speed earlier with water, nanometer pure aluminium silicate, wetting dispersing agent, half defoamer high-speed stirring 2 hours, make it abundant dispersion, under agitation add other inorganic nanometer powders, high-speed stirring is 2 hours on multi-functional dispersion machine, by high speed shear it is uniformly dispersed.Slowly drip emulsion then under low stirring velocity, added remaining defoamer, film coalescence aid, frostproofer, flow agent stirring at low speed subsequently 4 hours, last tinning promptly gets the coating finished product.
Embodiment 3: nanometer pure aluminium silicate 25%, acrylate and vinyl acetate emulsion 23%, water 38%, nano silicon 4%, nano aluminium oxide 2%, nano zine oxide 2%, nano-titanium oxide 2%, film coalescence aid 0.5%, defoamer 1%, wetting dispersing agent 1%, frostproofer 1%, flow agent 0.5%.Preparation process is as follows: under stirring at low speed earlier with water, nanometer pure aluminium silicate, wetting dispersing agent, half defoamer high-speed stirring 2 hours, make it abundant dispersion, under agitation add other inorganic nanometer powders, high-speed stirring is 3 hours on multi-functional dispersion machine, by high speed shear it is uniformly dispersed.Slowly drip emulsion then under low stirring velocity, added remaining defoamer, film coalescence aid, frostproofer, flow agent stirring at low speed subsequently 6 hours, last tinning promptly gets the coating finished product.
Embodiment 4: nanometer pure aluminium silicate 10%, benzene emulsion 25%, water 42%, nano silicon 5%, nano aluminium oxide 4%, nano zine oxide 5%, nano-titanium oxide 5%, film coalescence aid 0.5%, defoamer 1%, wetting dispersing agent 1%, frostproofer 1%, flow agent 0.5%.Preparation process is as follows: under stirring at low speed earlier with water, nanometer pure aluminium silicate, wetting dispersing agent, half defoamer high-speed stirring 2 hours, make it abundant dispersion, under agitation add other inorganic nanometer powders, high-speed stirring is 2 hours on multi-functional dispersion machine, by high speed shear it is uniformly dispersed.Slowly drip emulsion then under low stirring velocity, added remaining defoamer, film coalescence aid, frostproofer, flow agent stirring at low speed subsequently 8 hours, last tinning promptly gets the coating finished product.
Embodiment 5: nanometer pure aluminium silicate 30%, benzene emulsion 18%, water 40%, nano silicon 2%, nano aluminium oxide 2%, nano zine oxide 2%, nano-titanium oxide 2%, film coalescence aid 0.5%, defoamer 1%, wetting dispersing agent 1%, frostproofer 1%, flow agent 0.5%.Preparation process is as follows: under stirring at low speed earlier with water, nanometer pure aluminium silicate, wetting dispersing agent, half defoamer high-speed stirring 1 hour, make it abundant dispersion, under agitation add other inorganic nanometer powders, high-speed stirring is 2 hours on multi-functional dispersion machine, by high speed shear it is uniformly dispersed.Slowly drip emulsion then under low stirring velocity, added remaining defoamer, film coalescence aid, frostproofer, flow agent stirring at low speed subsequently 10 hours, last tinning promptly gets the coating finished product.
Claims (9)
1. pure aluminium silicate nano composite heat insulation coating is characterized in that the component of this pure aluminium silicate nano composite heat insulation coating and mass percent are as follows:
Nanometer pure aluminium silicate 10-40%, acrylate and vinyl acetate emulsion or benzene emulsion 15-30%, water 30-50%, nano silicon 2-6%, nano aluminium oxide 2-6%, nano zine oxide 2-5%, nano-titanium oxide or titanium dioxide 2-5%, film coalescence aid 0.1-2%, defoamer 0.1-2%, wetting dispersing agent 0.1-2%, frostproofer 0.5-2%, flow agent 0.1-2%.
2. the preparation method of pure aluminium silicate nano composite heat insulation coating according to claim 1 is characterized in that this preparation method is specific as follows:
Under stirring at low speed earlier with water, nanometer pure aluminium silicate, wetting dispersing agent, half defoamer high-speed stirring 1-3 hour, make it abundant dispersion, under agitation add inorganic nanometer powder: nano silicon, nano aluminium oxide, nano zine oxide, nanometer titanium dioxide, on multi-functional dispersion machine high-speed stirring 1-3 hour, by high speed shear it is uniformly dispersed, under low stirring velocity, slowly drip emulsion then, add remaining defoamer, film coalescence aid, frostproofer, flow agent subsequently, stirring at low speed 3-10 hour, last tinning promptly got the coating finished product.
3. according to the described pure aluminium silicate nano composite heat insulation coating of claim 1, the solid content that it is characterized in that described acrylate and vinyl acetate emulsion or benzene emulsion is greater than 40%, less than 60%, minimum film-forming temperature 1-10 ℃.
4. according to the described pure aluminium silicate nano composite heat insulation coating of claim 1, it is characterized in that the size of described nano silicon, nano aluminium oxide, nano zine oxide, nanometer titanium dioxide is lower than 100 nanometers.
5. according to the described pure aluminium silicate nano composite heat insulation coating of claim 1, it is characterized in that described wetting dispersing agent is 10% sodium hexametaphosphate solution.
6. according to the described pure aluminium silicate nano composite heat insulation coating of claim 1, it is characterized in that described film coalescence aid is 2,2,4-trimethylammonium-1.3 pentanediol only son acid esters.
7. according to described pure aluminium silicate nano composite heat insulation coating of claim 1 and preparation method thereof, it is characterized in that: described frostproofer is an ethylene glycol.
8. according to the described pure aluminium silicate nano composite heat insulation coating of claim 1, it is characterized in that described defoamer is a tributyl phosphate.
9. according to the described pure aluminium silicate nano composite heat insulation coating of claim 1, it is characterized in that described flow agent is a urethane.
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| CN102504661A (en) * | 2011-11-21 | 2012-06-20 | 沈阳化工大学科亚学院 | Nanometer heat isolation paint and preparation method thereof |
| CN102604472A (en) * | 2012-03-01 | 2012-07-25 | 江苏科技大学 | Environment-friendly high-temperature resistant coating and preparation method thereof |
| CN102807326A (en) * | 2012-08-20 | 2012-12-05 | 宁波荣山新型材料有限公司 | Polymer-modified low temperature foaming glass thermal insulation material and preparation method thereof |
| CN103756466A (en) * | 2013-12-31 | 2014-04-30 | 广西吉顺能源科技有限公司 | Composite heat-insulation coating and preparation method thereof |
| CN104530850A (en) * | 2015-01-26 | 2015-04-22 | 重庆索利特涂料有限公司 | Inner wall latex paint with room temperature regulating function and preparation method thereof |
| CN105907199A (en) * | 2016-06-12 | 2016-08-31 | 安徽快来防水防腐有限公司 | Scrubbing resistance two-component acetic acrylic polymer modified cement-base waterproof coating and preparation method thereof |
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| CN109679492A (en) * | 2018-12-05 | 2019-04-26 | 湖南悟空信息科技有限公司 | A kind of wear-resistant anti-spread coated paint of electronic device resistant to high temperature and preparation method thereof |
| CN109777213A (en) * | 2019-03-07 | 2019-05-21 | 南京淳彩建材有限公司 | A kind of dirt-resistant self-cleaning emulsion paint and preparation method thereof |
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| CN102504661A (en) * | 2011-11-21 | 2012-06-20 | 沈阳化工大学科亚学院 | Nanometer heat isolation paint and preparation method thereof |
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| CN105907199A (en) * | 2016-06-12 | 2016-08-31 | 安徽快来防水防腐有限公司 | Scrubbing resistance two-component acetic acrylic polymer modified cement-base waterproof coating and preparation method thereof |
| CN108859109A (en) * | 2018-08-21 | 2018-11-23 | 珠海天威飞马打印耗材有限公司 | three-dimensional printer and its working method |
| CN109679492A (en) * | 2018-12-05 | 2019-04-26 | 湖南悟空信息科技有限公司 | A kind of wear-resistant anti-spread coated paint of electronic device resistant to high temperature and preparation method thereof |
| CN109777213A (en) * | 2019-03-07 | 2019-05-21 | 南京淳彩建材有限公司 | A kind of dirt-resistant self-cleaning emulsion paint and preparation method thereof |
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