DE102010029116A1 - Producing thick calibrated adhesive sample, comprises e.g. covering at least two mold plates with high heat applied non-adhesive coating, inserting adhesive composition in between the coated mold surfaces and compressing together - Google Patents
Producing thick calibrated adhesive sample, comprises e.g. covering at least two mold plates with high heat applied non-adhesive coating, inserting adhesive composition in between the coated mold surfaces and compressing together Download PDFInfo
- Publication number
- DE102010029116A1 DE102010029116A1 DE102010029116A DE102010029116A DE102010029116A1 DE 102010029116 A1 DE102010029116 A1 DE 102010029116A1 DE 102010029116 A DE102010029116 A DE 102010029116A DE 102010029116 A DE102010029116 A DE 102010029116A DE 102010029116 A1 DE102010029116 A1 DE 102010029116A1
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- DE
- Germany
- Prior art keywords
- mold
- adhesive
- mold plates
- plates
- sample
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/68—Release sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/52—Heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/08—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means for dielectric heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren und ein Formwerkzeug zum Herstellen einer dickenkalibrierten Klebstoffprobe, nach dem Oberbegriff des Patentanspruchs 1 bzw. 6.The invention relates to a method and a mold for producing a thick-calibrated adhesive sample, according to the preamble of
Um die Kenndaten von Klebstoffsystemen z. B. warmhärtenden Strukturklebstoffen für Karosseriebauteile im Zugversuch zu ermitteln, werden exakt dimensionierte, plattenförmige Klebstoffproben im ausgehärteten Zustand benötigt. Zu diesem Zweck wird üblicherweise eine Klebstoffmasse im zähflüssigen Zustand in einem Formwerkzeug,, welches an den Formflächen mit einem Trennmittel oder einer Antihaftfolie, etwa aus Polytetrafluorethylen, belegt ist, mit einer vorgegebenen Klebstoffdicke verpresst und ausgehärtet. Dabei wirken sich jedoch die entstehenden Oberflächenfehler, Dickenvariationen, Blasenbildungen und/oder ein Wärmeverzug an den fertig gestellten Klebstoffproben verfälschend auf das Messergebnis aus, so dass die ermittelten Kennwerte stark toleranzbehaftet sind.To the characteristics of adhesive systems z. B. to determine thermosetting structural adhesives for body parts in the tensile test, exactly sized, plate-shaped adhesive samples are required in the cured state. For this purpose, an adhesive mass in the viscous state is usually pressed in a mold, which is coated on the mold surfaces with a release agent or a non-stick film, such as polytetrafluoroethylene, with a predetermined adhesive thickness and cured. However, the resulting surface defects, thickness variations, blistering and / or thermal distortion on the finished adhesive samples have a falsifying effect on the measurement result, so that the determined characteristic values have a high degree of tolerance.
Aufgabe der Erfindung ist es, ein Verfahren und ein Formwerkzeug der eingangs genannten Art zu schaffen, mit denen formgenaue, fehlerfreie Klebstoffproben problemlos herzustellen sind,The object of the invention is to provide a method and a mold of the type mentioned, with which accurate, error-free adhesive samples are easy to manufacture,
Diese Aufgabe wird erfindungsgemäß durch das im Patentanspruch 1 gekennzeichnete Verfahren bzw. das im Patentanspruch 6 gekennzeichnete Formwerkzeug gelöst.This object is achieved by the method characterized in claim 1 or characterized in
Aufgrund der thermisch und mechanisch lastfesten Bindung der Antihaftschicht an den Formplatten zusammen mit dem Verpressen der zähflüssigen Klebstoffmasse in einem sich bis auf eine definierte Klebstoffdicke verengenden Formspalt werden erfindungsgemäß qualitativ hochwertige Klebstoffproben erhalten, die von den üblichen, messwertverfälschenden Fehlstellen frei sind und so eine exakte Kenndatenermittlung des jeweiligen Klebstoffsystems ermöglichen.Due to the thermally and mechanically load-resistant bonding of the non-stick layer to the mold plates together with the compression of the viscous adhesive composition in a narrowing to a defined adhesive thickness mold gap high-quality adhesive samples are obtained according to the invention, which are free of the usual, verwertwertverfälschenden defects and so an exact identification of characteristics allow the respective adhesive system.
In besonders bevorzugter Ausgestaltung der Erfindung wird der Formspalt zwischen den Formplatten in seitlicher Richtung zumindest stellenweise begrenzungsfrei ausgebildet und dadurch die Klebstoffmasse quer zur Dickenerstreckung ausweichfähig gehalten, so dass der Klebstoffüberschuss beim Schließen der Formplatten zwischen diesen ausgequetscht wird und Volumenänderungen während des Aushärtvorgangs vor allem von warmhärtenden Klebstoffsystemen ausgeglichen werden und daher ohne Einfluss auf die Formgenauigkeit der Klebstoffprobe bleiben.In a particularly preferred embodiment of the invention, the mold gap between the mold plates in the lateral direction formed at least in places limitless and thereby held the adhesive composition transversely to the thickness extension evasive, so that the excess adhesive is squeezed when closing the mold plates between them and volume changes during the curing process, especially of thermosetting Adhesive systems are compensated and therefore remain without influence on the dimensional accuracy of the adhesive sample.
Zweckmäßigerweise wird die Klebstoffprobe nach dem Aushärten noch bis zum abgekühlten Zustand zwischen den Formplatten belassen und erst danach entformt. Hierdurch wird ein Wärmeverzug der Klebstoffprobe wirksam verhindert, während zugleich durch die hochfeste Antihaftbeschichtung der Formplatten sichergestellt ist, dass sich die Klebstoffprobe auch im abgekühlten Zustand problemlos und frei von Oberflächenfehlern von den Formplatten lösen lässt.Advantageously, the adhesive sample is left after hardening until the cooled state between the mold plates and only then removed from the mold. As a result, a heat distortion of the adhesive sample is effectively prevented, while at the same time ensured by the high-strength non-stick coating of the mold plates that the adhesive sample can be solved easily and free of surface defects from the mold plates even in the cooled state.
Bei der praktischen Erprobung der Erfindung hat sich eine Antihaftschicht in Form einer eingebrannten Polytetrafluorethylen- oder auch einer hocherhitzt aufgebrachten, siliziumbasierten Solgelbeschichtung als besonders günstig erwiesen.In the practical testing of the invention, an anti-adhesion layer in the form of a baked-on polytetrafluoroethylene or else a superheated, silicon-based sol gel coating has proved to be particularly favorable.
Die Erfindung wird nunmehr anhand zweier Ausführungsbeispiele in Verbindung mit den Zeichnungen näher erläutert. Es zeigen in stark schematisierter Darstellung:The invention will now be explained in more detail with reference to two embodiments in conjunction with the drawings. It shows in a highly schematic representation:
Das in
Zur Herstellung einer Klebstoffprobe
Bei der nachfolgenden Warmhärtung werden Volumenänderungen der Klebstofffüllung dadurch ausgeglichen, dass sich die Klebstoffmasse
Das in
Im Rahmen der Erfindung sind zahlreiche Abwandlungen möglich. So können die Formplattenbeschichtungen
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010029116.1A DE102010029116B4 (en) | 2010-05-19 | 2010-05-19 | Method and mold for making an adhesive sample |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010029116.1A DE102010029116B4 (en) | 2010-05-19 | 2010-05-19 | Method and mold for making an adhesive sample |
Publications (2)
Publication Number | Publication Date |
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DE102010029116A1 true DE102010029116A1 (en) | 2011-11-24 |
DE102010029116B4 DE102010029116B4 (en) | 2021-10-14 |
Family
ID=44900528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102010029116.1A Active DE102010029116B4 (en) | 2010-05-19 | 2010-05-19 | Method and mold for making an adhesive sample |
Country Status (1)
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DE (1) | DE102010029116B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011078296A1 (en) | 2011-06-29 | 2013-01-03 | Bayerische Motoren Werke Aktiengesellschaft | Method for determining rheological characteristics at particular unhardened adhesive sample, involves introducing adhesive composition in free-flowing state between two nonstick mold plates, and compressing mold plates |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3627608A (en) * | 1969-06-16 | 1971-12-14 | Woodall Industries Inc | Method of forming a panel having a compound curvature |
JPS62234696A (en) * | 1986-04-02 | 1987-10-14 | Matsushita Electric Works Ltd | Cushion material for molding press |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0740378B2 (en) | 1984-12-07 | 1995-05-01 | 株式会社日立製作所 | Method and device for duplicating information record carrier |
DE102005037338A1 (en) | 2005-08-04 | 2007-02-08 | Starnberger Beschichtungen Gmbh | Producing a nonstick coating on a substrate comprises applying a primer coat having inclusions, applying a top coat and heat-treating the top coat |
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2010
- 2010-05-19 DE DE102010029116.1A patent/DE102010029116B4/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3627608A (en) * | 1969-06-16 | 1971-12-14 | Woodall Industries Inc | Method of forming a panel having a compound curvature |
JPS62234696A (en) * | 1986-04-02 | 1987-10-14 | Matsushita Electric Works Ltd | Cushion material for molding press |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011078296A1 (en) | 2011-06-29 | 2013-01-03 | Bayerische Motoren Werke Aktiengesellschaft | Method for determining rheological characteristics at particular unhardened adhesive sample, involves introducing adhesive composition in free-flowing state between two nonstick mold plates, and compressing mold plates |
DE102011078296B4 (en) | 2011-06-29 | 2019-03-28 | Bayerische Motoren Werke Aktiengesellschaft | Test method for uncured adhesives |
Also Published As
Publication number | Publication date |
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DE102010029116B4 (en) | 2021-10-14 |
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