EP2836312A1 - Installation et procédé pour l'application par air comprimé d'un matériau de revêtement poreux sur un substrat - Google Patents

Installation et procédé pour l'application par air comprimé d'un matériau de revêtement poreux sur un substrat

Info

Publication number
EP2836312A1
EP2836312A1 EP13714914.2A EP13714914A EP2836312A1 EP 2836312 A1 EP2836312 A1 EP 2836312A1 EP 13714914 A EP13714914 A EP 13714914A EP 2836312 A1 EP2836312 A1 EP 2836312A1
Authority
EP
European Patent Office
Prior art keywords
coating material
compressed air
inlet
water
bore
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13714914.2A
Other languages
German (de)
English (en)
Other versions
EP2836312B1 (fr
Inventor
Michael Petry
Thorsten Adebahr
Joachim Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Worlee Chemie GmbH
Original Assignee
Worlee Chemie GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Worlee Chemie GmbH filed Critical Worlee Chemie GmbH
Priority to EP13714914.2A priority Critical patent/EP2836312B1/fr
Publication of EP2836312A1 publication Critical patent/EP2836312A1/fr
Application granted granted Critical
Publication of EP2836312B1 publication Critical patent/EP2836312B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0093—At least a part of the apparatus, e.g. a container, being provided with means, e.g. wheels or casters for allowing its displacement relative to the ground
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1431—Arrangements for supplying particulate material comprising means for supplying an additional liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1463—Arrangements for supplying particulate material the means for supplying particulate material comprising a gas inlet for pressurising or avoiding depressurisation of a powder container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1481—Spray pistols or apparatus for discharging particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/005—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 mounted on vehicles or designed to apply a liquid on a very large surface, e.g. on the road, on the surface of large containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2601/00—Inorganic fillers
    • B05D2601/20—Inorganic fillers used for non-pigmentation effect
    • B05D2601/22—Silica
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
    • E04F21/06—Implements for applying plaster, insulating material, or the like
    • E04F21/08—Mechanical implements
    • E04F21/12—Mechanical implements acting by gas pressure, e.g. steam pressure

Definitions

  • the present invention relates to a system and a procedural ⁇ ren for applying a liquid to paste-like and porous coating material to a substrate, in particular by means druckluftquaintem spraying of the coating material so ⁇ as a part of the plant which is used for controlling conveyance of the coating material, so that his preserving the porosity of ⁇ -causing properties. Furthermore, the present invention relates to the use of a porous coating material for spray application to a substrate.
  • liquid to pasty coating ⁇ materials are known to contain highly porous solid particles, which are based for example on aerogels or xerogels based on silicon dioxide (silica).
  • coating materials may additionally contain gas bubbles which produce a foam-like structure.
  • Such solids may be particles ⁇ according to known sol-gel method and special drying process can be obtained and are commercially available and industrially available. Due to their large pore volumes of up to more than 90% they are interesting as Isolierma ⁇ terialien, especially for heat, cold or sound insulation. Liquid to pasty Be Anlagenungsmateria ⁇ materials of the aforementioned type are also referred to below as porous coating materials.
  • the surfaces to be insulated are coated with the materials, so that the desired insulating ⁇ effect is achieved, for.
  • roofs, exterior and interior walls of buildings or containers such as containers, tanks, pipelines, etc. vehicle parts, ship components, plant components of the chemical industry and other industries.
  • the application of coating materials is generally done by rolling, trowelling or spraying.
  • the coating material is generally from a storage container via a suitable conduit of a spray apparatus such as a spray gun will be supplied ⁇ leads, by means of which it is then applied to one or more FLAE ⁇ chen (substrate) of an article.
  • pressure vessels are used as reservoirs and for conveying coating material for an injection technical application known.
  • the material ⁇ promote the coating material is ge fills ⁇ into a container and this applied after sealing with compressed air, whereby the material through an outlet from the container into an associated conduit and connected thereto before ⁇ devices for processing and application of the material is transported on substrates.
  • nachtei ⁇ lig that forms a funnel or V-shaped space in the pressure vessel after pressurization, whereby the coating material is pressed against the container walls, which is associated with an undesirable compression and damage to the porous structure.
  • the formation of the funnel or V-shaped space prevents the promotion of the coating material.
  • the pressure vessel may also called follower plate with a so-called printing plate, are verses ⁇ hen, which divides the container into a pressure medium chamber and a material space.
  • the pressure medium chamber is pressurized and the pressure plate then presses the Beschich ⁇ processing material evenly in the direction of the outlet.
  • too high pressures occur so that the porous structure is compressed, impaired or destroyed.
  • DE 20 2007 017 944 U1 describes a plastering machine with a pipeline for conveying the plastering material by means of a pump.
  • the system has a compressed air circle up. This serves to control valves on a spray lance as well as in the conveying line for the plastering material.
  • a mixer in which the dry airgel mixed with binder and moved in a so- ⁇ th dense stream on to the spray nozzle and the mixture is then applied under pressure from directly to the spray nozzle supplied compressed air to the application surface.
  • DE 39 16 319 AI relates to a spray head on a plaster ⁇ machine for processing mortar.
  • the mortar is conveyed by means of a mortar pump.
  • the spray head has an air supply, is supplied via the compressed air in the mouth region of the spray head before leakage of the mortar.
  • US 4,117,551 relates to a spray gun for applying urethane foam.
  • the individual components of the foam are supplied separately from storage containers of the spray gun and mixed within the spray gun and from there to a Substrate applied as a foam.
  • the structure of the spray gun is shown in particular in Figures 2 to 6.
  • Against the above background of the present invention has the object of providing a plant and a method ⁇ controzu, which contain materials that porous solids such as in particular aerogels and xerogels based on silicon dioxide, can be efficiently applied to a variety of different substrates without the key for the iso ⁇ -regulating effect of the porosity Be Schweizerungsma- lost terialien.
  • the object of the invention is achieved by a method for compressed air controlled application of a porous coating material a plant and to a substrate, wherein a) at least one pressure vessel is fed via an inlet with po ⁇ rettem coating material, b) the coating material through an outlet of min ⁇ least c) wherein the coating material is passed through a Ventilein ⁇ unit, which downstream of the at least ei ⁇ nen pressure vessel and upstream of the Spritzappara ⁇ tur is arranged and in which the coating material with is mixed compressed air and optionally water or wasserhal ⁇ current additives, d) is passed, the coating material thus treated in a one ⁇ let the spray apparatus, e) the spray apparatus is fed through a further inlet compressed air and f) the coating material servo-assisted zer stäubt ⁇ and is applied to a substrate.
  • the system according to the invention for the compressed-air-controlled application of porous coating material to a substrate comprises at least one pressure vessel for charging with coating material, the pressure vessel having an inlet and an outlet for the coating material, a spraying apparatus for applying the porous coating material to a substrate, wherein the spraying apparatus has an inlet comprises for the coating material, a further inlet for the supply of compressed air and a nozzle arrangement, a line connecting the Be Mrsungsmaterialauslass the print ⁇ container with the coating material inlet of the spray gun ⁇ temperature, a valve unit, which is connected to the conduit and downstream of the outlet the pressure vessel and upstream ⁇ of the inlet of the injection apparatus is arranged, wherein the valve unit has at least one extending in the longitudinal direction through the valve unit bore having a Passage channel forms for transporting the coating material comprises at least one lateral bore, the leave one A ⁇ forms for the supply of compressed air, the given ⁇ optionally is mixed with water or water containing additives, wherein the at least one lateral bore with the longitudinally
  • valve unit for controlling the promotion of a porous coating material in a system according to the invention, wherein the valve unit has at least one ver ⁇ in the longitudinal direction through the valve ⁇ running bore, which forms a passage for Trans ⁇ port of the coating material, at least one lateral Having bore which forms an inlet for the supply of compressed air, which is optionally mixed with water or aqueous additives, wherein the at least one lateral bore with the longitudinal bore is connected so that the coating material can be mixed in the passageway with the compressed air , and optionally at least one further lateral bore on ⁇ which forms an inlet for water for cleaning purposes and which is also connected to the longitudinally extending bore, wherein the lateral bores each with remindschlagv are provided.
  • the invention relates to the use of a coating material as defined herein for injection technical on ⁇ brin supply to a substrate as defined herein.
  • the invention relates to a method for the isolation of an object, in which are defined to be insulated coated surfaces of the object after OF INVENTION ⁇ to the invention process as described herein as a substrate one or several ⁇ r.
  • the method according to the invention and the system according to the invention comprise further features in addition to the features mentioned in the patent claims.
  • inventive method and the inventive system from the consist in the patent claims and the present specification ⁇ features disclosed. The same applies mutatis mutandis to the part of the system according to the invention, which serves to control the promotion of the coating material.
  • the system according to the invention does not comprise pumps for conveying the coating material.
  • the porous coating material is conveyed by means of compressed air. It is in the valve unit according to the invention, which can also be referred to as a mixing unit, mixed with compressed air and, if necessary, water or water-containing additives.
  • the porous structure of the coating material can be obtained.
  • the present invention is thus characterized in particular by the advantage that no pumps are used to convey the coating material. Instead, the coating material is conveyed with compressed air and especially in the modern fiction, ⁇ valve or mixing unit with compressed air and, if necessary, water water / water-containing additives mixed before then the coating material compressed air assisted by means of a spray ⁇ apparatus is applied to a surface to be coated.
  • FIG. 1 shows an overall view of the installation according to the invention.
  • FIG. 2 shows a pressure vessel according to the invention with pressure plate, outlet and outlet valve.
  • valve unit 3 shows a valve unit of the invention with through ⁇ let channel for the coating material and side Zumoni ⁇ implications for compressed air.
  • FIG. 4 shows a side view of a spraying apparatus in the form of a manual spray gun.
  • FIG. 5 shows a sectional view of the handgun.
  • Figure 6 shows a front view, a side view and a plan view of a system according to the invention, which is arranged on a trolley, and a picture of an operator with the system to illustrate a possible dimensioning.
  • Figure 7 shows a three dimensional view of a modern fiction, ⁇ system with two pressure vessels, which is arranged on a trolley.
  • FIG. 1 shows an overall view of the system according to the invention, comprising a pressure vessel 1, a spraying apparatus 2, a valve unit 3 according to the invention, a pressure regulating valve and pressure gauge arrangement 5 for the regulation of the compressed air supply and the corresponding lines 4a, 4b, 6, 7 , 8 for compressed air and coating material delivery.
  • a pressure regulating valve and pressure gauge arrangement 5 for the regulation of the compressed air supply and the corresponding lines 4a, 4b, 6, 7 , 8 for compressed air and coating material delivery.
  • FIG. 1 shows an overall view of the system according to the invention, comprising a pressure vessel 1, a spraying apparatus 2, a valve unit 3 according to the invention, a pressure regulating valve and pressure gauge arrangement 5 for the regulation of the compressed air supply and the corresponding lines 4a, 4b, 6, 7 , 8 for compressed air and coating material delivery.
  • another container for receiving liquid, in particular water or wasserhal ⁇ term liquids, and a conduit with which the container is connected to the compressed air line 7, so that in the valve unit 3 supplied
  • step (a) of the method according to the invention the pressure vessel 1 is charged via an inlet with porous coating material.
  • the inlet can be formed for example by ei ⁇ NEN removable cover of the container, which is closed after loading of the container again with this pressure-resistant.
  • the inlet may be in the form of an opening at a suitable location on the container provided with a suitable valve connected to a conduit through which coating material is supplied.
  • the coating material ⁇ according to step (b) of the method according to the invention by pressurizing the outlet ld (see Figure 2), which is provided with a valve for opening and closing the outlet, from the container into the line ( 4a, 4b), to which a spraying apparatus 2 is connected.
  • the pressure vessel which uses a pressure plate 9 (see FIG. 2)
  • the pressure vessel is subdivided into a coating material space le and a pressure medium space lf.
  • the pressure middle space with supplied via line 6 compressed air ⁇ se is set in motion, so that the coating material from the coating material space le in line 4a, 4b is conveyed.
  • the pressure plate can be moved mechanically or hydraulically.
  • more than one pressure vessel can be used and can be removed from this simultaneously or successively coating material. There are then other lines and valves that regulate the simultaneous or successive transport of the coating material from these containers.
  • the coating material according to step (c) of the OF INVENTION ⁇ to the invention process, after exit from the pressure vessel and entering line 4a passed through an inventive Ventilein ⁇ uniform.
  • the valve unit has a longitudinal bore which forms a passageway 3a for the coating material. This is connected with lateral prepared holes ⁇ gen 3b and 3c, the inlets for compressed air form, so that the coating material in the through-flow channel is mixed with the compressed air and is fluidized by this.
  • the inlet are provided with check valves 3e, 3f.
  • the compressed air is optionally a liquid, in particular water or water-containing materials ⁇ added, and optionally further additives to be added to the coating material and the compressed air can be transported.
  • a suitable Vernebier (not shown in Figure 1) can be used.
  • valve unit 3 can connect via a short line section 4a or directly to the pressure vessel.
  • the coating material is further conveyed by compressed air through line 4b to the injection apparatus.
  • the line 4a, 4b may be wholly or partly formed of rigid or flexible pressure-resistant material.
  • the conduit 4a may be made of stainless steel and the conduit 4b of a pressure-resistant flexible hose based on, for example, polyvinyl chloride.
  • the conduit 4b of a pressure-resistant flexible hose based on, for example, polyvinyl chloride.
  • Schläu ⁇ che are suitable on the basis of mixtures of PVC and silicone, which are in particular double-walled.
  • the Schlauchmateri ⁇ alien are characterized in that they are smooth-walled, and do not absorb moisture.
  • hose lengths are 1 to 50 m, preferably 10 to 40 m, z. B. 12 or 15 to 20 m.
  • the inner diameter of the lines of the system according to the invention can be in the range of a few mm to cm, depending on the overall dimensioning of the system.
  • For the line 4a, 4b for conveying the coating material of the inner ⁇ diameter is for example 10 to 20 mm.
  • a tube of the above type can be used, wherein the inner diameter is 13 mm.
  • Cables used for compressed air supply have diameters within the same order of magnitude as described above.
  • a line 8 for supplying compressed air to the injection apparatus from a conduit such as a hose with an inner diameter in the range of 5 to 20 mm, in particular 5 to 15 mm such as 9 mm exist.
  • step (d) of the process according to the invention the loading coating material is directed into an inlet of an injection apparatus 2, which may be formed for example as a manual or automatic injection ⁇ gun having a nozzle assembly 2a, an operating lever 2b and a pistol grip 2c.
  • the injection apparatus has a further inlet 2d for the supply of compressed air.
  • the compressed air is then brought to the loading coating material in contact, that it may be atomized through due ⁇ nozzle arrangement 2a and applied to the substrate to be coated in a suitable beam such as a flat jet or an omnidirectional beam.
  • the pressure control valve and pressure gauge 5 By the pressure control valve and pressure gauge 5, the pressures in the pressure vessel 1, in the coating material line 4a, 4b and in the compressed air lines 7 to the valve unit and 8 to the injection apparatus separately controllable, so that in each case the desired operating conditions can be adjusted.
  • the working pressures in the pressure vessel are generally in the range between 2 and 5 bar, in particular 2 to 4.5 bar, in the valve unit according to the invention in the range between 2 and 4 bar, in particular 2 to 3 bar, and in the injection apparatus in Range from 2 to 5 bar.
  • the working pressure in the pressure vessel and the pressure for the additional compressed air supply in the valve unit according to the invention between 1.5 and 3.0 bar, the pressure for the additional compressed air supply equal to or lower than the working pressure in Pressure vessel is.
  • the flow rate of the coating material is generally 0.25 to 10 kg / min., This value being dependent on the pressures used in the individual plant areas and the dimensioning of the nozzle arrangement in the spraying apparatus.
  • the process according to the invention is generally carried out at room temperature, i. H. carried out in a temperature range between 15 and 25 ° C. However, it may also be carried out at lower or higher temperatures as long as the conveyance of the coating material is given, e.g. in a temperature range of 5 to 15 ° C.
  • FIG 2 shows an embodiment of the pressure vessel according to the invention with pressure plate 9 and outlet ld, which leads into a coating material line 4b, which is connected to a valve lb for controlling the outflow from the pressure vessel 1.
  • the pressure vessel is divided into a coating material space le and a pressure medium space lf.
  • the pressure plate is moved towards the outlet be ⁇ and thus conveyed the coating material in line 4b.
  • FIG 3 shows an enlarged view of an embodiment of the valve unit according to the invention, which is connected upstream via the valve lb to a line 4a, in which the coating material from the outlet of the pressure vessel ⁇ occurs.
  • a line 4b On the downstream side of the Ventilein ⁇ integrated is connected to a line 4b which leads to the spray apparatus.
  • the valve unit has a passage 3 a, which is laterally connected to bores 3 b and 3 c, which are provided on their outer side respectively with check valves 3 e and 3 f, are connected to the lines 7 a and 7 b, takes place via the compressed air supply.
  • the compressed air with liquid especially water, water-containing materials or other additives, which are conveyed by compressed air, are added.
  • the lateral bores 3b and 3c are arranged so that the supply of compressed air, the promotion of the material downstream of the injection apparatus supports.
  • the holes are arranged in the ⁇ particular at an angle ⁇ 90 °, preferably at an angle in the range of 20 to 60 °, in particular 30 to 50 °, such as 35 to 45 °.
  • the lateral bores are arranged opposite one another. A particularly Güns ⁇ term mixing and loosening of the material is achieved.
  • FIG. 3 shows a further connection, which may be mounted on top of the valve unit and serving the supply of cleaning agent and / or water after the end of the operation of the plant according to the invention, so that these ge ⁇ purified and can be freed from the coating material residues .
  • This further feed line is also provided with a ge ⁇ suitable valve such as a check valve.
  • Figure 4 shows a side view of a spray apparatus in the form of a hand-held spray gun which is equipped with a nozzle assembly 2a, egg ⁇ nem operating lever 2b, an inlet for the coating material 2c and another inlet for compressed air 2d ⁇ .
  • the handgun also has a suspension hook 2f.
  • Figure 5 shows a lateral sectional view through the hand ⁇ zpistole sprit of Figure 4.
  • the cerium ⁇ atomization for example by means known in the art of commercially available spray guns which have suitable nozzles assemblies having inner andconcentrzerstäubung.
  • Figure 6 shows an embodiment of the system according to the invention, in which this is arranged on a trolley.
  • a ge ⁇ suitable embodiment of the trolley has a width 10 of 70 to 100 cm, a height 11 of 70 to 100 cm and a length 12 of 80 to 100 cm.
  • On the bottom plate of the rolling ⁇ cart a housing is applied, within which he ⁇ inventive valve unit 3 is housed.
  • On the upper side of the housing there are two pressure vessels, each having an outlet with adjoining material line, which are brought together to form a conduit which is connected to the valve unit (not shown in FIG. 6).
  • connection 14 to se ⁇ hen, to which a line 4 for conveying the coating material can be connected to a spray apparatus.
  • Line 4 is designed in the embodiment shown in Figure 6 as a flexible hose, which is shown in its storage position.
  • a container 15 is arranged on the trolley, in which a liquid such as water for humidification ⁇ tion of the compressed air is stored and to a compressed air line 7 (not shown in Figure 6) can be connected, which leads to the valve unit according to the invention.
  • the plant according to the invention can also be stationary, i. permanently in a certain place.
  • FIG. 7 shows a three-dimensional view of the trolley according to FIG. 6, in which, in particular, inlet valves for the supply of compressed air to the pressure vessels 1 are shown.
  • the pressure vessels 1 have on their upper side also via pressure gauges, which indicate the pressure in the pressure medium space. Otherwise, reference may be made to the explanations regarding FIG. 7.
  • the plant according to the invention has been described above with respect to its use for applying a porous coating material.
  • the system and in particular the arrangement of the valve unit according to the invention can also be used for other purposes in which a material delivery and compressed air supply are beneficial, as the plant of the invention allows.
  • the system can also be used to apply non-porous materials to substrates or to treat surfaces with materials which can be conveyed and applied by the system according to the invention, even if no permanent connection between the material and the treated substrate is associated with the application. z. B. because there is only a cleaning or polishing effect to be achieved.
  • porous coating materials which can be conveyed with the system according to the invention and applied to substrates as well as their preparation are described, for example, in EP 1 697 671 A1 and WO 2003/097227 A1.
  • Other suitable materials are commercially available, e.g. From Worlee-Chemie GmbH, Hamburg, Germany.
  • porous, liquid to pasty coating materials are generally present as aqueous dispersions of porous, ie having pore-containing solid particles.
  • a coating material according to the invention comprises a liquid phase in which porous solid particles are dispersed.
  • the consistency of this dispersion can be described as liquid to pasty, depending on the Antei ⁇ len of the solid and liquid components of the respective dispersion.
  • these coating materials may additionally contain gas bubbles (eg air-filled or air-containing Gasbla ⁇ sen), which produce a foam-like structure.
  • gas bubbles eg air-filled or air-containing Gasbla ⁇ sen
  • the coating material according to the invention has a viscosity of 10,000 to 100,000 mPas, in particular 30,000 to 100,000 mPas, preferably 50,000 to 90,000 mPas, measured with a haake VT 500 viscometer, measuring device E 100, shear stress about 91 S _1 .
  • the coating materials in addition to the constituents that make up the porosity, more solid or liquid ingredients are added to give the desired properties such.
  • the substrates to be coated may form or form part of items such as roofs, exterior and interior walls of buildings or containers such as containers, tanks, pipelines, vehicle parts, marine components, plant components of the chemical industry and other industries. Before applying the coating according to the invention, they may already have been coated with other materials, for example with paints.
  • the substrate comprises or consists of a material selected from the group consisting of glass, wood and wood-based materials, metals, in particular iron, steel and aluminum, in particular anodized aluminum, mineral building materials such as concrete, cement materials, tiles, stones, such as For example, sand-lime brick, ytone stone, ceramics, and plastics, in particular polyethylene and copolymers thereof and suitable for use as coatings ⁇ polymers such as alkyd resins, and Kom ⁇ combinations thereof.
  • the porous solid particles of the coating material may be formed from airgel or xerogel particles of organic or inorganic materials, e.g. Resorcinol-formaldehyde or melamine-formaldehyde airgel particles or metal oxide airgel particles (e.g., silica, titania and alumina aerogels). Furthermore, other porous solid particles of organic or inorganic nature, for. B. be used on zeolite.
  • airgel or xerogel particles of organic or inorganic materials e.g. Resorcinol-formaldehyde or melamine-formaldehyde airgel particles or metal oxide airgel particles (e.g., silica, titania and alumina aerogels).
  • other porous solid particles of organic or inorganic nature for. B. be used on zeolite.
  • the porous coating material which can be processed according to the invention preferably contains porous solid particles based on silica aerogels or xerogels, which may optionally be chemically modified. Also suitable are other inorganic or organic porous solids. In particular ⁇ sondere the surface of the aero- or xerogels is hydrophobically modified, in particular by silanization.
  • silica-based aerogels are hereafter also short Silica aerogels, suitable according to the invention. These materials have a density in the range of 100 to 140 kg / m 3 and a porosity of> 80%, in particular of> 90%.
  • the Po ⁇ rosity is accompanied by a high inner surface of about 600 to 800 g / m 2 , measured as BET surface area, and a high oil absorption of about 500 to 700 g DBP (dibutyl phthalate) per 100 g of solid particles.
  • DBP dibutyl phthalate
  • the percentage of the pore volume at Intelvo ⁇ lumen of the porous material is meant by porosity or Porosi ⁇ tuschsgrad.
  • An inventively ver ⁇ aillebares porous coating material based on silicon ca aerogels or xerogels preferably has the following parameters relating to the material as a starting material, ie, the method described before application to substrates by means of the herein and subsequent drying to form an insulating layer.
  • the density of the material is generally 0.3 to 0.8 g / cm 3 , in particular 0.4 to 0.6 g / cm 3 , in particular 0.5 g / cm 3 .
  • the pH is generally in the range of 7 to 10, preferably 8 to 10, especially 8.3 to 8.5.
  • the total solids content ie the content of the dispersions of porous and non-porous solids, is generally in the range of about 50 to 90 wt .-%, preferably 60 to 80 wt .-%, in particular 65 to 75 wt .-% as about 67% by weight.
  • the content of porous solid particles is generally in the range of about 8 to 30 wt .-%, preferably 10 to 20 wt .-%, in particular 10 to 15 wt .-%.
  • the gas bubble content is generally in the range of 0 vol .-% to 50 vol .-%, preferably 10 vol .-% to 40 vol .-%, in particular 20 vol .-% to 30 vol .-%.
  • the gas bubble content he ⁇ pays off in which the volume of the total formulation (calculated from mass * density) the volume fraction of Formulie ⁇ approximately constituents is taken off and is set in relation to the overall volume of.
  • the water content of the formulation of the coating material is generally in the range of 20 to 50 wt .-%, preferably 25 to 40 wt .-%, in particular 30 to 35 wt .-% such as 32 wt .-%.
  • porous solid component and a dispersion ⁇ medium, particularly water, containing the coating material is generally as further components at least one polymer or copolymer, and in particular acrylate and gegebe ⁇ appropriate, other ingredients such as emulsifiers, stabilizers, surfactants, pigments, flame retardant additives, anti-corrosion ⁇ medium etc.
  • the porous coating material is applied by means of the method according to Invention ⁇ generally in layer thicknesses of up to 30 mm on a substrate.
  • the layer thickness is in the range of 10 mm to 100 pm, in particular 5 mm to 500 pm, based on the dried state, which is generally achieved by drying at room temperature within 24 hours after application. It can also be dried at elevated temperatures, for example at temperatures up to 120 ° C. In the not yet dried, ie wet state, the layer thicknesses are usually about 10 to 20% larger.
  • a coating material was prepared according to the following formula.
  • component 1 and component 2 were initially charged and homogenized with stirring. Then, constituent 3 and constituent 4 were slowly interspersed in portions without stirring, and then dispersed with the dispersant under high shear. Thereafter, ingredient 5 was slowly interspersed in portions with slow stirring and homogenized using low gravitational forces. Subsequently, constituent 6 was slowly interspersed in portions with slow stirring and homogenized using low gravitational forces. Finally inventory ⁇ part 7 and part 8 was allowed to flow under slow stirring and homogenized using low shear forces. Subsequently, an amount of about 5kg the coating material was introduced into a pressure vessel shown of an installation as in Figure 6 and ⁇ sheet as the substrate by means of this system on a steel.
  • the porous coating material Before the porous coating material was filled in the system, it was filled with water and rinsed. In addition to the pre-moistening of the pressure vessel 1 and the tubes 4a, 4b, the function of the individual components can be checked in this case.
  • the container or containers 1 were designed so that they could be filled with 2 liters of water each and then sealed.
  • the containers were pressurized with 0.5 bar.
  • the outlet valve lb of the pressure vessel and the invention shown SSE valve unit 3 have been opened and the lever 2b of the spray gun 2 is actuated. The water was pushed through the system and exited the gun nozzle.
  • the compressed air supply via line 7 was opened, also with 0.5 bar.
  • the water was enriched with air from the nozzle.
  • the atomizing air supply 8 was opened and also set at 0.5 bar.
  • the air-assured angerei ⁇ water entered from atomized from the nozzle to the gun. 2 This process can serve both the pre-moistening of all relevant parts and the function check. After the container (s) were drained, the pressure was released.
  • the coating material into the pressure vessels or the ⁇ ter 2 is filled. Thereafter, the pressure plate 9 was placed on the material and the container / 2 closed. The material pressure and the compressed air supply 7 were set to 2.5 bar. Since ⁇ after the exhaust valve lb was opened and the gun lever 2b actuated. If the material exits at the nozzle of the pistol le 2, the atomizing air was set at 3.0 bar and the material was applied to a substrate.
  • suitable specimens were produced from the coating material and the heat transfer coefficient and the thermal conductivity were measured.
  • the coating material was applied to a non-adhesive surface (eg made of Teflon) (wet about 12 mm layer thickness, dry about 10 mm layer thickness). After drying, the coating was removed from the substrate and square test specimens with 29 cm edge length were cut.
  • a non-adhesive surface eg made of Teflon
  • the heat transfer coefficient indicates the amount of heat that passes through 1 m 2 of a substance with a certain layer thickness when the temperature difference is 1 K.
  • the ⁇ ser value is therefore dependent on the layer thickness. It was measured according to the method described in DIN EN 12664. Thereafter, the heat transfer coefficient was at a 10 mm with a di ⁇ CKEN layer of insulating material above coated sample 4.7 W / (m 2 x K).
  • the thermal conductivity is the ability of a substance thermi ⁇ specific energy by means of thermal conduction in the form of heat to trans port ⁇ . As a material constant, this value is independent of the layer ⁇ thick.
  • the thermal conductivity of the above-ge ⁇ called sample layer was 0, 046 W / (m 2 x K) measured by the method described in DIN EN 12664 method. LIST OF REFERENCE NUMBERS

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Nozzles (AREA)

Abstract

La présente invention concerne une installation et un procédé pour l'application par air comprimé d'un matériau de revêtement poreux sur un substrat, selon lequel un matériau de revêtement poreux est introduit par un orifice d'entrée dans au moins un réservoir à fluide sous pression, le matériau de revêtement est transporté par un orifice de sortie dudit réservoir et introduit dans une conduite à laquelle un appareil de pulvérisation est raccordé. Le matériau de revêtement est guidé à travers une unité soupape qui est disposée en aval dudit réservoir à fluide sous pression et en amont de l'appareil de pulvérisation et dans laquelle le matériau de revêtement est mélangé à de l'air comprimé et éventuellement à de l'eau ou à des additifs contenant de l'eau. Le matériau de revêtement ainsi traité est guidé dans un orifice d'entrée de l'appareil de pulvérisation, ce dernier est alimenté en air comprimé par un autre orifice d'entrée et le matériau de revêtement est atomisé à l'aide d'air comprimé et appliqué sur un substrat. L'invention concerne également l'unité soupape de l'installation. L'invention concerne en outre l'utilisation d'un matériau de revêtement poreux à appliquer par la technique de pulvérisation ainsi qu'un procédé pour isoler un objet.
EP13714914.2A 2012-04-13 2013-04-05 Installation et procédé d'application à commande pneumatique d'un matériau de revêtement poreux sur un substrat Not-in-force EP2836312B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13714914.2A EP2836312B1 (fr) 2012-04-13 2013-04-05 Installation et procédé d'application à commande pneumatique d'un matériau de revêtement poreux sur un substrat

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12164096 2012-04-13
PCT/EP2013/057254 WO2013153006A1 (fr) 2012-04-13 2013-04-05 Installation et procédé pour l'application par air comprimé d'un matériau de revêtement poreux sur un substrat
EP13714914.2A EP2836312B1 (fr) 2012-04-13 2013-04-05 Installation et procédé d'application à commande pneumatique d'un matériau de revêtement poreux sur un substrat

Publications (2)

Publication Number Publication Date
EP2836312A1 true EP2836312A1 (fr) 2015-02-18
EP2836312B1 EP2836312B1 (fr) 2017-08-16

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EP13714914.2A Not-in-force EP2836312B1 (fr) 2012-04-13 2013-04-05 Installation et procédé d'application à commande pneumatique d'un matériau de revêtement poreux sur un substrat

Country Status (2)

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EP (1) EP2836312B1 (fr)
WO (1) WO2013153006A1 (fr)

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CN108722719A (zh) * 2018-06-28 2018-11-02 芜湖市三山龙城新材料有限公司 一种用于建筑涂料的高压喷涂装置
DE102018001800A1 (de) 2018-03-07 2019-09-12 Smart Material Printing B.V. Verfahren und Vorrichtung zur Reinigung von Gasen von Ammoniak oder Ammoniak und Noxen

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CN106013743A (zh) * 2016-07-07 2016-10-12 洛阳高昌机电科技有限公司 一种可同时喷涂多种建筑涂料的喷涂装置
CN106824596A (zh) * 2016-12-28 2017-06-13 芜湖顺景自动化设备有限公司 一种带防腐蚀层的建筑涂装机装置
CN106866013B (zh) * 2017-01-20 2020-03-31 伊科纳诺（北京）科技发展有限公司 一种雾化吸附提高二氧化硅气凝胶水相分散性的方法
CN108816601A (zh) * 2018-07-05 2018-11-16 安徽知之信息科技有限公司 一种新能源汽车制造用节能喷漆装置
CN108952109B (zh) * 2018-07-24 2020-07-03 郑广耀 一种墙面涂料喷涂装置
CN111411762B (zh) * 2020-03-31 2021-06-01 重庆工程职业技术学院 用于建筑装饰的喷涂装置
CN112252676A (zh) * 2020-10-23 2021-01-22 湖南欧龙艺墅建筑材料有限公司 一种真石漆喷射装置

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DE3916319A1 (de) 1989-05-19 1990-11-29 Harry Reinhardt Spritzkopf an einer putzmaschine
DE10211331B4 (de) 2002-03-14 2006-02-02 Sto Ag Verfahren zum Herstellen einer aerogelhaltigen Dämmschicht auf einer Außenwand eines Gebäudes
AU2003241488B2 (en) 2002-05-15 2008-01-24 Cabot Corporation Aerogel and hollow particle binder composition, insulation composite, and method for preparing the same
DE602004028865D1 (de) 2003-11-12 2010-10-07 Burchill Jr Zusammensetzung für wärmeisolierschicht
FR2910511A1 (fr) 2006-12-21 2008-06-27 Lucien Vidal Machine a projeter de l'enduit

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
DE102018001800A1 (de) 2018-03-07 2019-09-12 Smart Material Printing B.V. Verfahren und Vorrichtung zur Reinigung von Gasen von Ammoniak oder Ammoniak und Noxen
CN108722719A (zh) * 2018-06-28 2018-11-02 芜湖市三山龙城新材料有限公司 一种用于建筑涂料的高压喷涂装置

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WO2013153006A1 (fr) 2013-10-17

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