DD244102A1 - RELEASE AGENTS FOR METAL PARTS WHEN PAINTING STEEL PRODUCTS - Google Patents

RELEASE AGENTS FOR METAL PARTS WHEN PAINTING STEEL PRODUCTS Download PDF

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Publication number
DD244102A1
DD244102A1 DD85283998A DD28399885A DD244102A1 DD 244102 A1 DD244102 A1 DD 244102A1 DD 85283998 A DD85283998 A DD 85283998A DD 28399885 A DD28399885 A DD 28399885A DD 244102 A1 DD244102 A1 DD 244102A1
Authority
DD
German Democratic Republic
Prior art keywords
weight
release agent
water
metal parts
coating
Prior art date
Application number
DD85283998A
Other languages
German (de)
Inventor
Kurt Mueller
Klaus-Dieter Lechte
Original Assignee
Bauakademie Ddr
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 Bauakademie Ddr filed Critical Bauakademie Ddr
Priority to DD85283998A priority Critical patent/DD244102A1/en
Priority to DE19863640029 priority patent/DE3640029A1/en
Priority to CS868895A priority patent/CS889586A1/en
Publication of DD244102A1 publication Critical patent/DD244102A1/en

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    • 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
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B05D7/16—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using synthetic lacquers or varnishes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/38—Treating surfaces of moulds, cores, or mandrels to prevent sticking
    • B28B7/384—Treating agents
    • 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
    • C09D101/00—Coating compositions based on cellulose, modified cellulose, or cellulose derivatives
    • C09D101/08—Cellulose derivatives
    • C09D101/26—Cellulose ethers
    • C09D101/28—Alkyl ethers
    • C09D101/286—Alkyl ethers substituted with acid radicals
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M103/00—Lubricating compositions characterised by the base-material being an inorganic material
    • C10M103/04—Metals; Alloys
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M103/00—Lubricating compositions characterised by the base-material being an inorganic material
    • C10M103/06—Metal compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
    • C10M125/10—Metal oxides, hydroxides, carbonates or bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
    • C10M125/26—Compounds containing silicon or boron, e.g. silica, sand
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
    • C10M145/40—Polysaccharides, e.g. cellulose
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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    • C10M169/04—Mixtures of base-materials and additives
    • C—CHEMISTRY; METALLURGY
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    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
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    • C10M173/00—Lubricating compositions containing more than 10% water
    • C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/015—Anti-corrosion coatings or treating compositions, e.g. containing waterglass or based on another metal
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    • C10M2201/02—Water
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    • C10M2201/04—Elements
    • C10M2201/05—Metals; Alloys
    • C10M2201/053—Metals; Alloys used as base material
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    • C10M2201/0603—Metal compounds used as base material
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    • C10M2201/061—Carbides; Hydrides; Nitrides
    • C10M2201/0613—Carbides; Hydrides; Nitrides used as base material
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    • C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
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    • C10M2201/0623—Oxides; Hydroxides; Carbonates or bicarbonates used as base material
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    • C10M2201/065—Sulfides; Selenides; Tellurides
    • C10M2201/0653—Sulfides; Selenides; Tellurides used as base material
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    • C10M2201/0863—Chromium oxides, acids or salts used as base material
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    • C10M2201/0873—Boron oxides, acids or salts used as base material
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Abstract

Die Erfindung betrifft ein Trennmittel fuer Metallteile, insbesondere Transport- und Montagehilfsmittel bei der Pulverlackierung (Wirbelsintern, elektrostatisches oder elektrokinetisches Beschichten) von Bewehrungsstahl fuer Silikatbetone. Mit der Erfindung soll ein billiges, leicht verstellbares Trennmittel auf der Basis eines wasserloeslichen Bindemittels entwickelt werden, dessen Haftung zum Metall kleiner ist als die Haftung zum Lackueberzug, das keine Gesundheitsgefaehrdung fuer die mit diesen Mitteln in Kontakt kommenden Menschen darstellt und den brandschutztechnischen Anforderungen entspricht. Erfindungsgemaess wird die Aufgabe geloest durch eine homogene Mischung, bestehend aus 1,4 bis 2,5 Ma.-% Celluloseglykolsaeure44,0 bis 52,5 Ma.-%eines inerten anorganischen Pulverswie Schiefermehl, Talkum, Kreide,46,0 bis 53,5 Ma.-%Wasser.Das erfindungsgemaesse Trennmittel ist allgemein zum Entformen von Metallgegenstaenden aus einem Formenwerkzeug einsetzbar. Temperaturen bis zu 200C beeintraechtigen den Trennprozess nur positiv.The invention relates to a release agent for metal parts, in particular transport and assembly aids in the powder coating (vortex sintering, electrostatic or electro-kinetic coating) of reinforcing steel for silicate concrete. With the invention, a cheap, easily adjustable release agent based on a water-soluble binder is to be developed, the adhesion to the metal is smaller than the liability for Lackueberzug, which represents no health risk for coming into contact with these agents people and meets the fire safety requirements. According to the invention, the object is achieved by a homogeneous mixture consisting of 1.4 to 2.5% by weight of cellulose glycolic acid 44.0 to 52.5% by weight of an inert inorganic powder, such as shale meal, talc, chalk, 46.0 to 53, 5% by weight of water. The release agent according to the invention can generally be used for removing metal objects from a mold. Temperatures up to 200C only affect the separation process positively.

Description

eine homogene Mischung bilden.form a homogeneous mixture.

AnwendungebietAnwendungebiet

Die Erfindung betrifft ein Trennmittel für Metallteile, insbesondere Transport- und Montagehilfsmittel bei der Pulverlackierung (Wirbelsintern, elektrostatisches oder elektrokinetisches Beschichten) von Bewehrungsstahl für Silikatbetone.The invention relates to a release agent for metal parts, in particular transport and assembly aids in the powder coating (vortex sintering, electrostatic or electro-kinetic coating) of reinforcing steel for silicate concrete.

Charakteristik der bekannten technischen LösungenCharacteristic of the known technical solutions

Bei der Herstellung von bewehrten Silikatbetonen nimmt der Korrosionsschutz des bewehrten Stahls eine dominierende Stellung ein, da mit der hydrothermalen Härtung des Betons ein Milieu entsteht, welches keine dauerhafte Passivierung des Stahls gewährleistet. Der Stahl wird mit einem pulverförmigen Korrosionsschutzrnittel beschichtet. Bei diesem Prozeß werden Maschinenteile, Transport- und Montagehilfsmittel wie Fixier- und Haltestähle mitbeschichtet, deren Wiederverwendung einer aufwendigen, ständigen Reinigung, d.h. Entfernung des Korrosionsschutzmittels, bedarf.In the production of reinforced silicate concrete, the corrosion protection of the reinforced steel occupies a dominant position, since the hydrothermal hardening of the concrete creates an environment which does not ensure permanent passivation of the steel. The steel is coated with a powdered anti-corrosion agent. In this process machine parts, transport and assembly aids such as fixing and holding steels are co-coated, their reuse of a complex, permanent cleaning, i. Removal of corrosion inhibitor, required.

Es sind eine Reihe von Trennmitteln zum Entformen von Gegenständen aus einem Formenwerkzeug bekannt, die sich vorwiegendauf das Herstellen von Gegenständen aus einem bestimmten Werkstoff begrenzen (DE-PS Nr. 2440110, DE-OS Nr.2702 930, DE-AS Nr. 27 25209). Sie bieten für o.g. Eisen-oder Stahlerzeugnisse keine Trennmittelschicht, da sie meistens bei den geforderten Temperaturen von etwa 180°C nicht beständig sind.There are known a number of release agents for demolding articles from a mold tool, which are predominantly limited to the manufacture of articles made of a specific material (DE-PS No. 2440110, DE-OS No. 2,702,930, DE-AS No. 27 25209 ). They offer for o.g. Iron or steel products no release agent layer, as they are usually not resistant to the required temperatures of about 180 ° C.

Im DD-AP Nr.44606 wird ein Verfahren zum Herstellen von Schichten aus Polyvinylalkohol auf beispielsweise Metall, Holz, Papier, Gewebe und plastischen Materialien beschrieben, das unter anderem auch die Bildung von Filmen durch Beschichten von Trägern ermöglicht, auf denen der Polyvinylalkoholfilm, wenn er einmal getrocknet ist, keinerlei Haftfähigkeit besitzt. Man kann dann leicht den Überzug von seinem Träger trennen. Es werden Polyvinylalkoholdispersionen mit einer bestimmten Verseifungszahl hergestellt und verwendet. Versuche mit diesem Trennmittelfilm auf Stahl- bzw. Eisenteilen als Schutz gegen das pulverförmige Korrosionsschutzmittel, aufgetragen durch Wirbelsintern, zeigte keine zufriedenstellende Lösung.DD-AP No.44606 describes a process for producing layers of polyvinyl alcohol on, for example, metal, wood, paper, fabric and plastic materials, which also enables the formation of films by coating carriers on which the polyvinyl alcohol film, if Once dried, it has no adhesiveness. One can then easily separate the coating from its carrier. Polyvinyl alcohol dispersions having a specific saponification number are prepared and used. Experiments with this release film on steel or iron parts as protection against the powder corrosion inhibitor, applied by vortex sintering, showed no satisfactory solution.

Das DD-WP Nr. 139808 beinhaltet einmal eine Trennmittel-Lösung von 2,5-Celluloseacetat. Da dieses Acetat in Wasser unlöslich und nur in speziell zusammengesetzten Lösungsmittelgemischen löslich ist, wird die Verwendung eines Gemisches aus Methylethylketon und Methylenchlorid vorgeschlagen.DD-WP No. 139808 once contains a release agent solution of 2,5-cellulose acetate. Since this acetate is insoluble in water and soluble only in specially composed solvent mixtures, the use of a mixture of methyl ethyl ketone and methylene chloride is suggested.

Beide Substanzen sind sowohl medizinisch als auch brandschutztechnisch mit erheblichen Risiken belastet.Both substances are burdened with considerable risks, both medically and as regards fire protection.

Ziel der ErfindungObject of the invention

Mit der Erfindung soll ein Trennmittel für Metallteile^ie Montage- und Transporthilfsmittel bei der Pulverlackierung von Bewehrungsstahl für Silikatbetone zur Anwendung kommen, das billig und leicht herstellbar ist, keine Gesundheitsgefährdung für die mit diesen Mitteln in Kontakt kommenden Menschen darstellt und den brandschutztechnischen Anforderungen entspricht.With the invention, a release agent for metal parts ^ ie mounting and transport aids in the powder coating of reinforcing steel for silicate concrete is used, which is cheap and easy to manufacture, no health hazard for people coming in contact with these agents and meets the fire safety requirements.

Wesen der ErfindungEssence of the invention

Der Erfindung liegt die Aufgabe zugrunde, ein Trennmittel auf der Basis eines wasserlöslichen Bindemittels zu entwickeln, dessen Haftung zum Metall kleiner ist als die Haftung zum Pulverlacküberzug, das Trennmittel nicht qualitätsmindernd auf den Pulverlack einwirkt und durch seine gute Haftung zur Pulverlackmasse mit diesem im Silikatbeton verbleiben kann. Erfindungsgemäß wird die Aufgabe gelöst durch eine homogene Mischung, bestehend ausThe invention has for its object to develop a release agent based on a water-soluble binder whose adhesion to the metal is smaller than the adhesion to the powder coating, the release agent does not affect the quality of the powder coating and remain due to its good adhesion to the powder coating composition with this in silicate concrete can. According to the invention the object is achieved by a homogeneous mixture consisting of

1,4 bis 2,5Ma.-%Celluloseglykolsäure1.4 to 2.5% by weight of cellulose glycolic acid

44,0 bis 52,6 Ma.-% eines inerten anorganischen Pulvers wie Schiefermehl, Talkum, Kreide, Kaolin, Quarzmehl 46,0 bis 53,5 Ma.-% Wasser.44.0 to 52.6 mass% of an inert inorganic powder such as slate, talc, chalk, kaolin, quartz flour 46.0 to 53.5 mass% of water.

Ausführungsbeispielembodiment Beispiel 1:Example 1:

Bei Raumtemperatur werden 1,4 Masseteile Celluloseglykolsäure in 46,0 Masseteilen Wasser unter Einsatz eines Rührers gelöst. Nach Abschluß des Lösungsvorganges werden 52,6 Masseteile eines anorganischen inerten Pulvers, z. B. Schiefermehl, zugefügt und eingearbeitet. Die Stahlstäbe werden in diesen Beschichtungsstoff eingetaucht. Nach einer einmaligen Tauchung und Trocknung verbleibt ein Trennmittelfilm mit einer Schichtdicke von 250 bis 300μ,ιη.At room temperature, 1.4 parts by weight of cellulose glycolic acid are dissolved in 46.0 parts by weight of water using a stirrer. After completion of the dissolution process, 52.6 parts by mass of an inorganic inert powder, for. B. slate flour, added and incorporated. The steel bars are immersed in this coating material. After a single immersion and drying remains a release agent film with a layer thickness of 250 to 300μ, ιη.

Beispiel 2:Example 2:

Analog Beispiel 1 werden 2,5 Masseteile Celluloseglykolsäure in 53,5 Masseteilen Wasser gelöst. Danach erfolgt die Zugabe von 44 Masseteilen Quarzmehl. Die Schichtdicke des auf dem Stahlstab getrockneten Trennmittelfilms liegt zwischen 300 undAs in Example 1, 2.5 parts by weight of cellulose glycolic acid are dissolved in 53.5 parts by weight of water. This is followed by the addition of 44 parts by mass of quartz flour. The layer thickness of the release agent film dried on the steel rod is between 300 and

Beispiel 3:Example 3:

Es werden 2,0 Masseteile Celluloseglykolsäure in 49,0 Masseteilen Wasser gelöst. In diese Lösung werden unter Rühren 49,0 Masseteile Talkum eingearbeitet. Diese Suspension ergibt auf dem Stahlstab eine Trennschicht mit einer Dicke von ebenfalls2.0 parts by weight of cellulose glycolic acid are dissolved in 49.0 parts by weight of water. In this solution 49.0 parts by weight of talc are incorporated with stirring. This suspension gives on the steel rod a release layer with a thickness of also

In weiteren Versuchen wurden die Stoffe Kaolin und Kreide getestet. Dabei wurde festgestellt, daß die im Patentanspruch genannten anorganischen Stoffe innerhalb der erfindungsgemäßen Grenzen für die Zusammensetzung den erwünschten Trenneffekt erbringen.In further experiments, the substances kaolin and chalk were tested. It has been found that the inorganic substances mentioned in the claim provide the desired separation effect within the limits of the invention for the composition.

Claims (1)

Patentanspruch:Claim: Trennmittel für Metallteile bei der Lackierung von Stahlerzeugnissen, insbesondere bei der Pulverlackierung von Stahlbewehrungen für Silikatbetone auf wäßriger Basis, dadurch gekennzeichnet, daßRelease agents for metal parts in the coating of steel products, in particular in the powder coating of steel reinforcements for aqueous-based silicate concretes, characterized in that 1,4bis 2,5Ma.-%Celluloseglykolsäure1.4 to 2.5 mass% cellulose glycollic acid 44,0 bis 52,6Ma.-% eines inerten anorganischen Pulvers wie Schiefermehl, Talkum, Kreide, Kaolin, Quarzmehl 46,0 bis 53,5 Ma.-% Wasser44.0 to 52.6 Ma .-% of an inert inorganic powder such as slate, talc, chalk, kaolin, quartz flour 46.0 to 53.5 Ma .-% water
DD85283998A 1985-12-09 1985-12-09 RELEASE AGENTS FOR METAL PARTS WHEN PAINTING STEEL PRODUCTS DD244102A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DD85283998A DD244102A1 (en) 1985-12-09 1985-12-09 RELEASE AGENTS FOR METAL PARTS WHEN PAINTING STEEL PRODUCTS
DE19863640029 DE3640029A1 (en) 1985-12-09 1986-11-24 Release agent for metal components in the coating of steel products
CS868895A CS889586A1 (en) 1985-12-09 1986-12-04 Separating substance for metallic parts during steel products' varnishing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD85283998A DD244102A1 (en) 1985-12-09 1985-12-09 RELEASE AGENTS FOR METAL PARTS WHEN PAINTING STEEL PRODUCTS

Publications (1)

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DD244102A1 true DD244102A1 (en) 1987-03-25

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CS (1) CS889586A1 (en)
DD (1) DD244102A1 (en)
DE (1) DE3640029A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3905973C1 (en) * 1989-02-25 1990-02-22 Hebel Gmbh Holding, 8089 Emmering, De
DE4134898C2 (en) * 1991-10-18 1995-10-12 Oberspree Habelwerk Gmbh Use of a talc suspension as a wet powder for corrosion-protected strand-like bodies
DE19711002C2 (en) * 1997-03-17 1999-12-30 Suspa Spannbeton Gmbh Prefabricated tension member, especially as a circumferential tendon for large concrete containers

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935291A (en) * 1973-08-28 1976-01-27 The Goodyear Tire & Rubber Company Method of molding polyurethane articles in a mold coated with three mold release agents
DE2725209C3 (en) * 1977-06-03 1981-01-29 Rhein-Chemie Rheinau Gmbh, 6800 Mannheim Lubricants and mold release agents for curable molding compounds
DD139808A1 (en) * 1978-11-06 1980-01-23 Rudolf Bergner SEPARATING AND COATING AGENT FOR POLYURETHANEFORM KOERPER

Also Published As

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CS889586A1 (en) 1989-08-14
DE3640029A1 (en) 1987-06-11

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