NL1018215C2 - Applying a flame-retardant powder coating onto an object comprises heating the object and spraying a powder material onto the object through an electric field - Google Patents
Applying a flame-retardant powder coating onto an object comprises heating the object and spraying a powder material onto the object through an electric field Download PDFInfo
- Publication number
- NL1018215C2 NL1018215C2 NL1018215A NL1018215A NL1018215C2 NL 1018215 C2 NL1018215 C2 NL 1018215C2 NL 1018215 A NL1018215 A NL 1018215A NL 1018215 A NL1018215 A NL 1018215A NL 1018215 C2 NL1018215 C2 NL 1018215C2
- Authority
- NL
- Netherlands
- Prior art keywords
- powder coating
- electric field
- applying
- powder
- spraying
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K21/00—Fireproofing materials
-
- 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
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
- C09D5/032—Powdery paints characterised by a special effect of the produced film, e.g. wrinkle, pearlescence, matt finish
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
Abstract
Description
BRANDWERENDE POEDERCOATINGFIRE-RESISTANT POWDER COATING
De uitvinding betreft een werkwijze voor het aanbrengen van een brandwerende poedercoating op een object.The invention relates to a method for applying a fire-resistant powder coating to an object.
Bij bekende poedercoat technieken wordt een 5 electrisch veld rond een object aangebracht, waarna een poederraateriaal op het object gespoten wordt. Doordat de poederdeeltjes door het electrisch veld heengaan worden ze electrisch geladen en kleven daardoor aan het object. Vervolgens wordt het object door een oven geleid alwaar 10 het poedermateriaal verwarmd wordt, zodat het kan smelten en aldus een vaste laag kan vormen.With known powder coating techniques, an electric field is applied around an object, after which a powder material is sprayed onto the object. Because the powder particles pass through the electric field, they are electrically charged and therefore stick to the object. The object is then passed through an oven where the powder material is heated, so that it can melt and thus form a solid layer.
Objecten, zoals stalen balken, die van een dergelijke poedercoating zijn voorzien hebben echter het nadeel dat warmte gemakkelijk door de poedercoatlaag in 15 het object komt. Deze warmte kan bijvoorbeeld ontstaan door brand. Door dit warmtetransport door de poedercoating heen kan het object een zodanig temperatuur krijgen waardoor andere aangrenzende objecten kunnen ontvlammen.Objects, such as steel beams, which are provided with such a powder coating, however, have the disadvantage that heat easily enters the object through the powder coating layer. This heat can for example be caused by fire. Through this heat transfer through the powder coating, the object can get such a temperature that other adjacent objects can ignite.
20 Hiertoe kan een brandwerende poedercoating gebruikt worden, die bij hoge temperaturen expandeert waardoor het een isolatielaag vormt. Bij een shockbelasting, bijvoorbeeld directe blootstelling aan 1000°C is de expansietijd relatief lang waardoor te veel 25 warmte in het object dringt.A fire-resistant powder coating can be used for this purpose, which expands at high temperatures, forming an insulating layer. With a shock load, for example direct exposure to 1000 ° C, the expansion time is relatively long, as a result of which too much heat penetrates the object.
Het is een doel van de uitvinding een poedercoatlaag te voorzien, die dit warmtetransport bij shockbelasting vermindert.It is an object of the invention to provide a powder coating layer which reduces this heat transfer under shock loading.
' Dit· doel wordt bereikt met een werkwijze 30 volgens de aanhef, welke werkwijze de stappen omvat: - het verwarmen van het object; - het aanbrengen van een electrisch veld rond het object; 1 Π 1 2 - het door het electrisch veld op het object spuiten van een poedermateriaal.This object is achieved with a method according to the preamble, which method comprises the steps of: - heating the object; - applying an electric field around the object; 1 Π 1 2 - spraying a powder material through the electric field on the object.
Doordat het object allereerst verwarmd wordt, waarna het poedermateriaal op het object gespoten wordt, 5 zullen de poederdeeltjes direct bij contact met het object met elkaar versmelten. Doordat dit reeds tijdens het spuiten plaats vindt, ontstaat een ruwe poedercoatlaag waarin met lucht gevulde holtes zijn opgenomen. Door deze insluiting van lucht vormt de 10 poedercoatlaag een isolatielaag rond het object, waardoor de warmte als gevolg van de shockbelasting minder makkelijk overgaat in het object en waardoor het brandwerende poeder voldoende tijd krijgt te expanderen.Because the object is first of all heated, after which the powder material is sprayed onto the object, the powder particles will fuse together immediately upon contact with the object. Because this already takes place during spraying, a rough powder coating layer is created in which cavities filled with air are included. Due to this inclusion of air, the powder coating layer forms an insulating layer around the object, as a result of which the heat due to the shock load is less easily transferred to the object and as a result of which the fire-resistant powder is given sufficient time to expand.
Bij voorkeur wordt het object verwarmd tot een 15 temperatuur in het gebied van 80°C - 150°C. Bij deze temperaturen zijn de poederdeeltjes kleverig (taaivloeibaar) waardoor ze aan elkaar hechten. De temperaturen zijn echter wel zodanig laag dat de poederdeeltjes niet in elkaar overvloeien.Preferably the object is heated to a temperature in the range of 80 ° C - 150 ° C. At these temperatures, the powder particles are sticky (tough), so they stick to each other. However, the temperatures are so low that the powder particles do not overflow into each other.
20 In een voorkeursuitvoeringsvorm van een werkwijze volgens de uitvinding ligt de laagdikte van het poedermateriaal in het gebied van 700/xm - 2000μτη.In a preferred embodiment of a method according to the invention, the layer thickness of the powder material is in the range of 700 µm - 2000 µτη.
Hierdoor ontstaat een goede poedercoatinglaag met een brosse structuur waarin holtes aanwezig zijn waarin lucht 25 is ingesloten.This results in a good powder coating layer with a brittle structure in which cavities are present in which air is enclosed.
Volgens een andere uitvoeringsvorm van de werkwijze volgens de uitvinding omvat het poedermateriaal een gasvormend middel. Hierbij valt te denken aan een middel, dat bij verwarming gasvormig wordt, waardoor bij 30 contact met het object een schuimwerking ontstaat waardoor aldus een laag met ingesloten holtes gevormd wordt.According to another embodiment of the method according to the invention, the powder material comprises a gas-forming agent. In this connection, one may think of a means which, when heated, becomes gaseous, so that upon contact with the object a foaming action is created, thus forming a layer with enclosed cavities.
De uitvinding omvat verder een poedercoating, die aan elkaar gehechte poederdeeltjes omvat, waarbij de 35 deeltjes zodanig aan elkaar gehecht zijn, dat tussen de deeltjes lucht is ingesloten.The invention further comprises a powder coating comprising powder particles adhered to each other, the particles being adhered to each other in such a way that air is enclosed between the particles.
Ten opzichte van de gebruikelijke poedercoatings heeft een poedercoating volgens de ':ï tv.·!,.... ·, 3 uitvinding een hogere isolatiewaarde, waardoor warmteoverdracht vanaf buiten naar het object toe verminderd wordt.Compared to the usual powder coatings, a powder coating according to the invention has a higher insulation value, whereby heat transfer from outside to the object is reduced.
( * · ? -(* ·? -
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1018215A NL1018215C2 (en) | 2001-06-06 | 2001-06-06 | Applying a flame-retardant powder coating onto an object comprises heating the object and spraying a powder material onto the object through an electric field |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1018215 | 2001-06-06 | ||
NL1018215A NL1018215C2 (en) | 2001-06-06 | 2001-06-06 | Applying a flame-retardant powder coating onto an object comprises heating the object and spraying a powder material onto the object through an electric field |
Publications (1)
Publication Number | Publication Date |
---|---|
NL1018215C2 true NL1018215C2 (en) | 2002-12-10 |
Family
ID=19773492
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL1018215A NL1018215C2 (en) | 2001-06-06 | 2001-06-06 | Applying a flame-retardant powder coating onto an object comprises heating the object and spraying a powder material onto the object through an electric field |
Country Status (1)
Country | Link |
---|---|
NL (1) | NL1018215C2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1029137C2 (en) * | 2005-03-22 | 2006-09-25 | Kick Off Ltd | Coating structure. |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03192664A (en) * | 1989-12-20 | 1991-08-22 | Sanyo Electric Co Ltd | Nonaqueous electrolyte battery |
DE19533858A1 (en) * | 1995-09-13 | 1997-07-03 | Ihd Inst Fuer Holztechnologie | Electrostatic coating of wood or wood products |
US5877231A (en) * | 1994-04-20 | 1999-03-02 | Herberts Powder Coatings, Inc. | Radiation curable powder coatings for heat sensitive substrates |
-
2001
- 2001-06-06 NL NL1018215A patent/NL1018215C2/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03192664A (en) * | 1989-12-20 | 1991-08-22 | Sanyo Electric Co Ltd | Nonaqueous electrolyte battery |
US5877231A (en) * | 1994-04-20 | 1999-03-02 | Herberts Powder Coatings, Inc. | Radiation curable powder coatings for heat sensitive substrates |
DE19533858A1 (en) * | 1995-09-13 | 1997-07-03 | Ihd Inst Fuer Holztechnologie | Electrostatic coating of wood or wood products |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Section Ch Week 199140, Derwent World Patents Index; Class L03, AN 1991-291041, XP002197213 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1029137C2 (en) * | 2005-03-22 | 2006-09-25 | Kick Off Ltd | Coating structure. |
NL1028589C2 (en) * | 2005-03-22 | 2006-09-25 | Kick Off Ltd | Coating structure for protecting object such as steel beam against effects of fire comprises fire-resistant layer of foamable powder, and non-foamable powder layer which covers fire-resistant layer |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR940006427A (en) | Method for Forming Coating by Plasma Spray Treatment of Magnetic-Cermet Dielectric Composite Particles | |
RU98103746A (en) | METHOD AND DEVICE FOR APPLICATION OF POWDER COATING | |
NL1018215C2 (en) | Applying a flame-retardant powder coating onto an object comprises heating the object and spraying a powder material onto the object through an electric field | |
GB2229941A (en) | Method for applying water based metallic paint | |
US6887314B2 (en) | System for coating a substrate | |
EE9800047A (en) | Method of powder coating surfaces and powder for use in this method | |
RU98103745A (en) | METHOD FOR APPLYING POWDER COATING AND POWDER FOR USE IN THE SPECIFIED METHOD | |
WO2001028306A3 (en) | Process for preparing an aqueous powder coating dispersion | |
EP2450109A1 (en) | Powder coating | |
JP3024939B2 (en) | Reverse painting method | |
US20020114888A1 (en) | Method of applying a coating to a concrete surface and product related thereto | |
Abrams et al. | Powder coating of sheet molding compound (SMC) body panels | |
US10777982B2 (en) | Electrical box | |
US6248408B1 (en) | Method for simultaneously curing powder underlayer coating and PVD deposition of thin film layer | |
JPH05271900A (en) | Heating and pressurizing method of thermally sprayed film | |
JP4677838B2 (en) | Painting method | |
Delloro et al. | Characterization of mechanical behaviour of aluminum powders under fast dynamic conditions | |
JPS61103580A (en) | Coating process of deal | |
EP2162560A2 (en) | Metallization device and method | |
RU1799886C (en) | Composition for heat protective coatings | |
JPH05306185A (en) | Method for resin-coating on tile surface | |
Ezato et al. | Molecular dynamics simulation of atomic beam bombardment on a solid surface | |
JPH10182860A (en) | Transparent plastic board | |
JPS61228936A (en) | Bonding of foamed polystyrene and metal | |
JPH0440271A (en) | Drying method after degreasing and cleaning |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PD2B | A search report has been drawn up | ||
VD1 | Lapsed due to non-payment of the annual fee |
Effective date: 20060101 |