CN102229776A

CN102229776A - Liquid heat insulation film and preparation method thereof

Info

Publication number: CN102229776A
Application number: CN2011100661072A
Authority: CN
Inventors: 王高君
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-18
Filing date: 2011-03-18
Publication date: 2011-11-02

Abstract

The invention relates to a liquid heat insulation film and a preparation method thereof. The sunshine reflectivity of the heat insulation to a range of film far-infrared to visible light wave is great than 0.91, the thermal conductivity coefficient is less than 0.05W/(M.K), the temperature difference of the surface of the irradiated object and the surface of a blank sample can be achieved above 30 DEG C. The main heat insulation and reflection materials of the heat insulation film are nanometer silica hollow ball coated nickel powder, nanometer zirconia or nanometer titanium dioxide, and nanometer titanium dioxide chaperones, hollow closed pore balls containing more than 80% of silica and alumina, one type or more of mica powder and titanium dioxide; a main binder is one type or a plurality of aqueous epoxy resin, aqueous silicone-acrylate, aqueous fluorocarbon resin and aqueous polyester resin. The material can be coated on the cement surface, timber surface, various metals and metal oxide container surface, polymeric material surface and the like, the coating method can be scrape coating, roll coating, brush coating or spray coating.

Description

A kind of liquid thermal isolation film and preparation method

(1) technical field

The present invention relates to energy-saving building materials and application thereof, the heat insulation application and the protection of chemical storage tank surface and pipe surface.

(2) background technology

The sun makes all things on earth be grown and continue for the light and heat of the earth, and sun power is familiar with fully by the mankind as a kind of energy and constantly is used.All there is the effect of the pros and cons the same with anything, excessive sunlight heat has brought many troubles also for the earth, nature and the mankind, even formation disaster: the sun heat radiation of excess makes the appearance temperature of petrochemical complex storage tank reach seventy or eighty degree, and a large amount of raw materials loses because of " size is breathed " that temperature variation forms.In order to keep the safety in production, people have to thicken the steel plate thickness of storage tank, have to adopt spray water to be lowered the temperature to storage tank.Bad change process and even generation insect pest that the temperature of grain depot raises and quickened grain, the labor intensive of having to material resources shorten taking grain out of a granary to sun it the time of grain.The intensification of boats and ships, vehicle is having a strong impact on its performance performance, and refrigeration cool-down has expended the too much energy again, has also brought atmospheric pollution simultaneously.The intensification of factory building and dwelling house has consumed a large amount of electric energy so that people obtain nice and cool in, further aggravated the tropical island effect in city again.U.S. physicist of Chinese origin, incumbent USDOE minister's Steven Chu were said in the climate change symposial in London in 2009: if white is painted on all roofs, road surface and automobile use light application, reflected solar radiation heat in a large number just, use reducing Greenhouse effect, be equivalent to the carbon emission that all automobiles are in the world stopped minimizing in 11 years.

Existing thermal isolation film is mainly used in the heat insulation of the heat insulation or air material of glass surface, all is dispatch from the factory film or plate with regard to compression moulding, and manufacture difficulty is higher, is difficult to be applied to the rough and uneven in surface or big area in surface and decorates.And kind is single, can not satisfy the more market requirement.The present invention relates to a kind of liquid thermal isolation film material, can simply be coated on scraggly body surface, wide in variety, can select matched materials according to unlike material.The heat-proof quality excellence.

(3) summary of the invention

In order to overcome the application limitation of present thermal isolation film, the present invention adopts a kind of novel nano coating material: nano-silicon dioxide hollow sphere clad nano nickel powder, nano zircite or nano titanium oxide can reach extraordinary reflection, radiation effect; Adopt the closed pore ball of the hollow low water absorption of different-grain diameter, conduction that can trap heat; Simultaneously, the high titanium dioxide of selective light reflectivity is as reflection, absorbing material, the optimization of C design, and the coating thickness that makes has improved the dry film area of per kilogram material greatly 150 microns heat insulation and heat control effects that just can reach excellence, provides cost savings.Sunlight reflectivity is greater than 0.91 after testing, and thermal conductivity is less than 0.05W/ (M.K), and the shone thing surface can reach more than 30 degrees centigrade with the standard surface temperature difference.This technology is showing good effect at present by pilot scale aspect storage tank cooling, the building energy conservation.

1, a kind of liquid thermal isolation film and preparation method comprise two parts of primer and surface material:

1. primer: according to required applicator surface properties, preferred different sorts binding agent mainly consists of:

Nano silicon coated powder companion

Production technique: under condition of stirring, add above-mentioned materials successively, behind dispersion, grinding, homogeneous, obtain thick liquid.Above-mentioned nanometer companion needs to be uniformly dispersed through special process.

Preparation technology: can adopt blade coating, brush, roller coating or spraying coating process are constructed, and generally apply about 100 microns of dried film thickness two to four times.

2. surface material:, mainly consist of according to required applicator surface properties:

Nano silicon coated powder companion

Production technique: under condition of stirring, add above-mentioned materials successively, behind dispersion, grinding, homogeneous, obtain thick liquid.Above-mentioned companion need adopt special process to be uniformly dispersed in advance.

Preparation technology: the primer preparation is finished, and is dry more than 12 hours, carries out the surface material coating again, can adopt brushing, and roller coating or spraying coating process are constructed, and generally apply about 50 microns of dried film thickness two to three times.

2, be commercially available common deionized water according to the deionized water described in the summary of the invention 1, described defoamer is the FoamstarA36 and the A10 of Shenzhen Hai Chuan chemical industry; Dispersion agent is the H5040 of extra large river chemical industry and the TCP-8030N of Nuo Puke; Wetting agent is the H140 or the H875 of extra large river chemical industry; Nano silicon coated powder companion and nano titanium oxide companion produce for Beijing Saiterui Science ﹠ Technology Development Co., Ltd.; Reflecting material is the mixture of rutile titanium white powder R960, process white, infrared external reflection agent etc.; Film coalescence aid is the Texnoal of U.S. Yi Siman; Other functional agents are commercially available propylene glycol, Diethylene Glycol butyl ether, biocide mildewcide LXE, ADEKANOL UH420, the AP-10 of ROHM AND HAAS of the AMP95 of LG-DOW, Japan, the DSX3550 of extra large river chemical industry etc.; Binding agent is the pure acrylic resin emulsion K2 of ROHM AND HAAS, the BP-108 of Beijing Proview latex, the shake F500-1 of nation of Dalian, the PTFE of Daikin, Waterpoxy 1455 that German section is peaceful and solidifying agent Waterpoxy 751.

3, coating thickness of the present invention is about about 150 microns, and all material all adopts water-soluble environment protective material, safety non-toxic.But the firm attachment of originally filming is in various substrate surfaces, and not efflorescence more than 20 years does not come off.

(4) embodiment

Now the present invention will be further described in conjunction with specific embodiments.

1, primer preparation: if basic unit is the metal species surface, select for use aqueous epoxy resins or fluorocarbon resin as binding agent, it mainly consists of:

The A component

The B component

Aqueous epoxy resins 1000 (weight)

Production technique: under the situation of stirring at low speed, press formula ratio successively and add the 01-12 above-mentioned materials, 500 rev/mins of middling speeds stir, and change shredder over to and are ground to fineness change dispersion machine over to after 50 microns, add 12 thickening materials under the condition of stirring and regulate viscosity.Press A: B=1 during use: 1 mixed mechanical stirring is even, and adding suitable quantity of water adjusting viscosity again can be coated with, and needs after the mixing use up in 4-6 hour.About 100 microns of coating build is coated with in back 24 hours and avoids rainwater to drench, and can carry out the surface layer coating after 12 hours.

2, surface material preparation: select for use fluoro-resin emulsion as binding agent, mainly consist of:

Production technique: under the situation of stirring at low speed, press formula ratio successively and add the 01-11 above-mentioned materials, 500 rev/mins of middling speeds stir, and change shredder over to and are ground to fineness change dispersion machine over to after 30 microns, add to continue to stir behind the 12-14 material to get final product in 1 hour.The coating of surface layer must be finished at prime-coating and carry out about 50 microns of coating build after (25 ℃ ventilate) in 12 hours.

Reached 80% above performance in 3 days after the surface layer coating is finished, reached optimum performance in 7 days, always build is about 150 microns.Whole dry film leading indicator:

Claims

1. liquid thermal isolation film and preparation method, it is characterized in that this thermal isolation film to the sunlight reflectivity of far infrared in the visible light wave range greater than 0.91, thermal conductivity is less than 0.05W/ (M.K), the shone thing surface reaches more than 30 degrees centigrade with blank sample surface temperature difference.

2. thermal isolation film according to claim 1 is characterized in that mainly heat insulation, the reflecting material of thermal isolation film is: one or more of the nano-silicon dioxide hollow sphere clad nano nickel powder of content 1.0%-5.0% (weight), nano zircite, nano titanium oxide; The hollow low water absorption closed pore ball of content 5%-15% (weight) (particle diameter is between 10 microns-50 microns, contains silicon-dioxide and aluminium sesquioxide greater than 80%); One or more of wollastonite, rutile titanium dioxide, mica powder.

3. heat insulation, reflecting material according to claim 2 is characterized in that total content is the 20%-80% (weight) of thermal isolation film.

4. thermal isolation film according to claim 1, the main binding agent that it is characterized in that composition is an aqueous epoxy resins, waterborne organic silicon CALCIUM ACRYLATE, water-based fluorocarbon resin, one or more of aqueous polyester resin.

5. binding agent according to claim 4 is characterized in that total content is the 20%-80% (weight) of thermal isolation film.

6. according to the described thermal isolation film of claim 1-5, it is characterized in that about 200 microns of prepared build.

7. according to the described thermal isolation film of claim 1-6, it is characterized in that being mainly used in building roof, external wall energy-saving, chemical storage tank heat insulation and heat control, the heat insulation and protection of plate surface.