CH507810A - Polyethylene-aluminium laminates bonded with an ethylene - copolymer adhesive - Google Patents
Polyethylene-aluminium laminates bonded with an ethylene - copolymer adhesiveInfo
- Publication number
- CH507810A CH507810A CH323569A CH323569A CH507810A CH 507810 A CH507810 A CH 507810A CH 323569 A CH323569 A CH 323569A CH 323569 A CH323569 A CH 323569A CH 507810 A CH507810 A CH 507810A
- Authority
- CH
- Switzerland
- Prior art keywords
- polyethylene
- copolymer
- ethylene
- tert
- composite body
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/04—Homopolymers or copolymers of ethene
- C09J123/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/28—Non-macromolecular organic substances
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
Metal-polyolefin laminates, esp. aluminium-polyethylene laminates, are obtained by bonding with an adhesive comprising a copolymer from ethylene and an aliphatic, ethylenically unsatd. carboxylic acid. Also present is 0.05-5% of a stabiliser for the polyethylene, esp. soot, 4:4'-thiobis-(3-methyl-6-tert.butyl phenol), and 2-(2'-hydroxy-3':5'-di-tert.butyl phenol)-5-chlorbenztriazole. These laminates, esp those comprising Al sheets and a polyethylene core, are lightweight and highly rigid making them suitable as constructional material for cars, boats, aircraft etc.
Description
Verbundkörper aus Metall und einem Polyolefin
Es ist bekannt, Verbundkörper, insbesondere Verbundplatten, durch Verkleben von Metall, insbesondere Aluminium, mit einem Polyolefin, insbesondere Poly äthylen, herzustellen. Als Klebemittel wird dabei eine Folie aus einem Kopolymerisat aus Athylen, einer aliphatischen äthylenisch ungesättigten Carbonsäure und eventuell weiteren in das Polymerisat eingebauten Zusätzen eingesetzt. Beim Verkleben unter Anwendung von Druck und Wärme schmilzt diese Folie und verbindet sich mit dem Metall und dem Polyolefin.
Zur Beurteilung der Haftfestigkeit des Verbundes wird an Verbundstreifen durch Abschälen der einen Schicht nach der ASTM-Vorschrift Nr. 1781 (American Society for Testing Materials) das Schälmoment bestimmt. An Verbundstreifen aus Polyäthylen und Aluminium werden dabei Werte um 20 kg/cm erhalten. Unter dem Einfluss des Wetters, insbesondere von Wasser und Wärme nehmen diese Werte mit der Zeit jedoch ab. Nach einer Lagerung von einem Jahr im Freien, die etwa einer Lagerung von 14 Tagen in Wasser von 700 C entspricht, beträgt das Schälmoment in den Randpartien des Verbundstreifens nur noch 10 bis 20% des Anfangswertes. Die Abnahme der Haftfestigkeit schreitet von den Kanten nach innen.
Die Erfindung betrifft einen Verbundkörper aus Metall und einem Polyolefin, dessen Schichten mit Hilfe eines Kopolymerisates aus Äthylen, einer aliphatischen äthylenisch ungesättigten Carbonsäure und eventuell weiteren in das Polymerisat eingebauten Zusätzen verklebt sind, und der eine hohe Beständigkeit der Haftfestigkeit des Verbundes aufweist. Erfindungsgemäss enthält das Kopolymerisat einen Zusatz von 0,05 bis 5 Gew.% eines Stabilisators für Polyäthylen. Bekannte Stabilisatoren sind z. B. Russ, gewisse Phenole, Amine, Salicylate und Benzophenonderivate und Benzotriazole.
Als besonders geeignet haben sich für den vorgesehenen Zweck Russ, Derivate des 3-Methyl-6-tert.-butylphenols und Benzotriazolderivate erwiesen, wie z. B.
4,4'-Thiobis-(3-methyl-6-tert.-butylphenol), 4,4'-Butylenbis-(3-methyl-6-tert.-butylphenol) und
2-(2'-Hydroxy-3',5'-di-tert.-butylphenol) 5-chlorbenzotriazol.
Die Erfindung ist besonders geeignet zur Herstellung von Verbundplatten aus einem Polyäthylenkern und beidseitigen Schichten aus Aluminiumfolie oder -blech. Solche Verbundplatten werden als Bauelemente für verschiedene Anwendungen eingesetzt, wie z. B.
im Bauwesen, Fahrzeug-, Schiff- und Flugzeugbau und im Behälterbau. Sie zeichnen sich durch ein leichtes Gewicht und hohe Steifigkeit aus.
Beispiel
Eine 3 mm dicke Polyäthylenplatte wurde mit einem Aluminiumblech von 0,5 mm Dicke verklebt unter Zwischenlage einer 100 ,um dicken Folie aus dem Kopolymerisat aus 88 Gewichtsteilen Athylen, 2,7 Gewichtsteilen Acrylsäure und 9,3 Gewichtsteilen tert.-Butylacrylat. Das Kopolymerisat wurde ohne und mit verschiedenen Zusätzen eingesetzt. An einzelnen Verbundproben wurde sofort nach der Verklebung und nach 2 bzw. 4 Wochen Lagerung in Wasser von 700 C das Schälmoment bestimmt. Die Resultate sind in nachfolgender Tabelle zusammengestellt.
Schälmoment in kg/cm/cm
Kopolymerisat
Nach Verklebung Nach 2 Wochen Nach 4 Wochen 1 ohne Zusatz 18 2 2 mit 3% Russ 19 19 18 3 mit 0,1% A 22 21 22 4 mit 0,1% B 17 18 17 A = 4,4'-Thiobis-(3-methyl-6-tert.-butylphenol) B = 2-(2'-Hydroxy-3',5'-di-tert.-butylphenol)-5 chlorbenzotriazol
Composite body made of metal and a polyolefin
It is known to produce composite bodies, in particular composite panels, by gluing metal, in particular aluminum, with a polyolefin, in particular poly ethylene. The adhesive used is a film made from a copolymer of ethylene, an aliphatic, ethylenically unsaturated carboxylic acid and possibly other additives built into the polymer. When glued using pressure and heat, this film melts and bonds with the metal and the polyolefin.
To assess the adhesive strength of the composite, the peel torque is determined on composite strips by peeling off one layer in accordance with ASTM regulation No. 1781 (American Society for Testing Materials). Values of around 20 kg / cm are obtained on composite strips made of polyethylene and aluminum. However, under the influence of the weather, especially water and heat, these values decrease over time. After storage for one year in the open air, which corresponds to storage for 14 days in water at 700 ° C, the peel torque in the edge areas of the composite strip is only 10 to 20% of the initial value. The decrease in adhesive strength progresses from the edges inwards.
The invention relates to a composite body made of metal and a polyolefin, the layers of which are bonded with the aid of a copolymer of ethylene, an aliphatic, ethylenically unsaturated carboxylic acid and possibly other additives built into the polymer, and which has a high level of adhesion of the composite. According to the invention, the copolymer contains an additive of 0.05 to 5% by weight of a stabilizer for polyethylene. Known stabilizers are z. B. soot, certain phenols, amines, salicylates and benzophenone derivatives and benzotriazoles.
Carbon black, derivatives of 3-methyl-6-tert-butylphenol and benzotriazole derivatives have proven to be particularly suitable for the intended purpose, e.g. B.
4,4'-thiobis (3-methyl-6-tert-butylphenol), 4,4'-butylenebis (3-methyl-6-tert-butylphenol) and
2- (2'-Hydroxy-3 ', 5'-di-tert-butylphenol) 5-chlorobenzotriazole.
The invention is particularly suitable for the production of composite panels from a polyethylene core and layers on both sides of aluminum foil or sheet. Such composite panels are used as components for various applications, such as. B.
in construction, vehicle, ship and aircraft construction and in container construction. They are characterized by their light weight and high rigidity.
example
A 3 mm thick polyethylene plate was bonded to an aluminum sheet 0.5 mm thick with a 100 .mu.m thick film made from the copolymer of 88 parts by weight of ethylene, 2.7 parts by weight of acrylic acid and 9.3 parts by weight of tert-butyl acrylate. The copolymer was used with and without various additives. The peel torque was determined on individual composite samples immediately after bonding and after storage in water at 700 ° C. for 2 or 4 weeks. The results are compiled in the table below.
Peeling moment in kg / cm / cm
Copolymer
After bonding After 2 weeks After 4 weeks 1 without addition 18 2 2 with 3% carbon black 19 19 18 3 with 0.1% A 22 21 22 4 with 0.1% B 17 18 17 A = 4,4'-thiobis (3-methyl-6-tert-butylphenol) B = 2- (2'-hydroxy-3 ', 5'-di-tert-butylphenol) -5 chlorobenzotriazole
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH323569A CH507810A (en) | 1969-03-04 | 1969-03-04 | Polyethylene-aluminium laminates bonded with an ethylene - copolymer adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH323569A CH507810A (en) | 1969-03-04 | 1969-03-04 | Polyethylene-aluminium laminates bonded with an ethylene - copolymer adhesive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH507810A true CH507810A (en) | 1971-05-31 |
Family
ID=4251565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH323569A CH507810A (en) | 1969-03-04 | 1969-03-04 | Polyethylene-aluminium laminates bonded with an ethylene - copolymer adhesive |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH507810A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7959755B2 (en) * | 2003-04-28 | 2011-06-14 | Nakamoto Packs Co., Ltd. | Manufacture of thermal laminate and apparatus therefor |
-
1969
- 1969-03-04 CH CH323569A patent/CH507810A/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7959755B2 (en) * | 2003-04-28 | 2011-06-14 | Nakamoto Packs Co., Ltd. | Manufacture of thermal laminate and apparatus therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |