DE1141435B - Process for roughening plastics which harden automatically and irreversibly, in particular castable polyester urethanes for the purpose of bonding - Google Patents

Process for roughening plastics which harden automatically and irreversibly, in particular castable polyester urethanes for the purpose of bonding

Info

Publication number
DE1141435B
DE1141435B DEP26167A DEP0026167A DE1141435B DE 1141435 B DE1141435 B DE 1141435B DE P26167 A DEP26167 A DE P26167A DE P0026167 A DEP0026167 A DE P0026167A DE 1141435 B DE1141435 B DE 1141435B
Authority
DE
Germany
Prior art keywords
roughening
plastics
irreversibly
mass
bonding
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.)
Pending
Application number
DEP26167A
Other languages
German (de)
Inventor
Dr Reinhard Fischer
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.)
Phoenix AG
Original Assignee
Phoenix Gummiwerke AG
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 Phoenix Gummiwerke AG filed Critical Phoenix Gummiwerke AG
Priority to DEP26167A priority Critical patent/DE1141435B/en
Publication of DE1141435B publication Critical patent/DE1141435B/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • 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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • B29C59/022—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing characterised by the disposition or the configuration, e.g. dimensions, of the embossments or the shaping tools therefor
    • B29C2059/023—Microembossing
    • 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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/026—Chemical pre-treatments
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7394—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset

Description

Verfahren zum Aufrauhen von selbsttätig irreversibel aushärtenden Kunststoffen, insbesondere von gießbaren Polyesterurethanen zum Zwecke des Verbindens Die Erfindung bezieht sich auf ein Verfahren zum Aufrauhen von vorzugsweise miteinander zu verbindenden Flächen von selbsttätig irreversibel aushärtenden Kunststoffen, insbesondere von gießbaren Polyesterurethanen.Process for roughening automatically irreversibly hardening Plastics, in particular of castable polyester urethanes for the purpose of bonding The invention relates to a method for roughening, preferably one another surfaces to be connected by automatically irreversibly hardening plastics, especially of castable polyester urethanes.

Beim Gießen von Artikeln aus Kunststoffen, insbesondere aus Polyesterurethan, erhalten diese eine glatte Oberfläche. Für einige Artikel und besonders bei Haftverfahren ist eine derartige Oberfläche jedoch unerwünscht. Soll eine derartige glatte Oberfläche beseitigt werden, ist eine Nachbehandlung durch Sandstrahlung oder durch Schleifvorgänge erforderlich. When casting articles from plastics, especially from polyester urethane, these get a smooth surface. For some articles and especially in detention proceedings however, such a surface is undesirable. Should have such a smooth surface can be removed is a post-treatment by sandblasting or by grinding processes necessary.

Diese Methoden erfordern nicht nur Arbeitsaufwand, sondern bringen gleichzeitig eine unbestimmte Materialverminderung mit sich, die bei hohen Anforderungen an die Toleranz nicht immer in Kauf genommen werden kann. Weiterhin sind diese Methoden nicht bei Gegenständen geeignet, die eine von der ebenen Fläche abweichende Oberfläche besitzen, da bei diesen Artikeln beim Schleifen in örtlichen Bereichen unkontrollierte Materialmengen abgenommen werden.These methods not only require labor, they bring in at the same time an indeterminate material reduction with it, which with high requirements the tolerance cannot always be accepted. Furthermore, these methods are Not suitable for objects that have a surface that deviates from the flat surface because these articles are uncontrolled when grinding in local areas Material quantities are removed.

Zur Vermeidung dieser Nachteile und zur verbesserten Lösung der gestellten Aufgabe ist in der Erfindung vorgesehen, daß auf die zur Haftung vorgesehene Fläche während der Aushärtung im Stadium eines zähviskosen Zustandes eine feinkörnige bis pulvrige Masse aufgestreut wird. Der genaue Zeitpunkt des Aufstreuens hängt zum Teil davon ab, wie groß das Korn der pulvrigen Masse ist. Außerdem hat die Kristallisationsform der Masse wegen der Kantenausbildung eine Bedeutung und schließlich ist auch das spezifische Gewicht bei der Wahl des Zeitpunktes zum Aufstreuen nicht ohne Wirkung. Der geeignete viskose Zustand liegt im allgemeinen in einem Stadium, in dem der Kunststoff zwar noch eine Klebrigkeit, aber dennoch schon eine gewisse Druckfestigkeit besitzt. To avoid these disadvantages and to improve the solution to the problem The object of the invention is that on the surface intended for adhesion during the hardening in a viscous state a fine-grained to powdery mass is sprinkled on. The exact time of sprinkling depends on the Part of it depends on how big the grain of the powdery mass is. In addition, has the crystallization form the mass because of the formation of the edges and ultimately that too specific gravity when choosing the point in time for sprinkling is not without effect. The suitable viscous state is generally at a stage in which the Plastic still has a stickiness, but still has a certain compressive strength owns.

Nach der Erfindung kann es auch vorgesehen sein, daß die pulvrige bis feinkörnige Masse mit der Oberfläche des Kunststoffes in Reaktion tritt oder völlig indifferent ist. Als indifferente Mittel können Kochsalz, Sägemehl, Quarzsand od. dgl. verwendet werden. According to the invention it can also be provided that the powdery until fine-grained mass reacts with the surface of the plastic or is completely indifferent. Table salt, sawdust, quartz sand can be used as indifferent means or the like. Can be used.

Als reaktionsfähige Mittel sind Zucker, Cellulose oder kristaliwasserhaltige Salze verwendbar. Sind diese Massen wasserlöslich, so können sie nach Aushärtung der Platten durch Abspülen wieder beseitigt werden.As reactive agents are sugar, cellulose or crystalline water containing Salts can be used. If these masses are water-soluble, they can after hardening the plates can be removed again by rinsing.

Sind die Massen nicht wasserlöslich, werden sie mechanisch, beispielsweise durch Abbürsten entfernt.If the masses are not water-soluble, they become mechanical, for example removed by brushing.

Sind die verwendeten Massen kapilaraktiv, so ist die Wirkung hinsichtlich der Schaffung einer rauhenOberfläche besonders groß, da ein tiefes Eindringen auch bei geringem spezifischen Gewicht in die zähviskose Oberfläche möglich ist. Weiterhin ist zu berücksichtigen, daß beim Schleudervorgang sich die Wirkung der pulverförmigen Massen entsprechend der Umfangsgeschwindigkeit der Schleuder infolge erhöhter Gravitation vergrößert.If the masses used are capillary-active, the effect is with regard to the creation of a rough surface is particularly great, since deep penetration is also great at low specific weight in the viscous surface is possible. Farther It must be taken into account that the effect of the powdery is reduced during the spinning process Masses corresponding to the circumferential speed of the slingshot due to increased gravity enlarged.

Die erfindungsgemäße Methode läßt sich auch bei Formartikeln anwenden, wenn die Form vor dem Einfüllen mit gießfähigem Kunststoff mit der pulverförmigen Masse eingepudert wird. In diesem Falle sind an die verwendeten Mengen besondere Ansprüche gestellt, damit eine zu tief greifende Veränderung der Oberfläche vermieden werden solIte, insbesondere, wenn es sich um Massen handelt, die eine Reaktionsbereitschaft zum aushärtenden Kunststoff zeigen. The method according to the invention can also be used for molded articles, if the mold before filling with pourable plastic with the powdery Mass is powdered. In this case, the amounts used are special Claims are made so that too profound changes to the surface are avoided Should be, especially when it comes to masses who are willing to react point to the hardening plastic.

Während eine mit Leder zu verklebende Oberfläche von Polyesterurethan in vorteilhafter Weise zur Aufrauhung mit Holzmehl bestreut wird, ist zur Haftung mit Gummi feinkörniges Zinkstearat besonders geeignet. Für die Haftung mit Steinmaterial ist die oberflächliche Behandlung mit Bleicherde oder Talkum, für die Haftung mit reaktionsfähigen Kunststoffen pulverisierter Polyvinylalkohol vorteilhaft. Die infolge der Reaktion mit der Oberfläche des Kunststoffes fest verbundenen Mittel können außerdem auch durch ihre Eigenstruktur eine Begünstigung der Haftung ergeben. While a surface made of polyester urethane to be glued with leather is advantageously sprinkled with wood flour for roughening, is for adhesion Fine-grain zinc stearate with rubber is particularly suitable. For adhesion with stone material is the superficial treatment with fuller's earth or talc, for adhesion with Reactive plastics, powdered polyvinyl alcohol is advantageous. The result the reaction with the surface of the plastic firmly connected means In addition, their own structure also promotes liability.

Beispiel Zur Herstellung einer klebefreudigen Oberfläche an einer Polyesterurethanplatte wird die Gießmasse 5 Minuten nach dem Eingießen in die heiße Schleudertrommel den geeigneten Viskositätsgrad erreichen. Example To produce a sticky surface on a Polyester urethane sheet becomes the casting compound 5 minutes after pouring reach the appropriate viscosity level in the hot centrifugal drum.

Anschließend wird Holzmehl, das durch ein Sieb von 120 Maschen pro qcm ausgesiebt ist, gleichmäßig in der Trommel während des Laufens verteilt. Pro 100 qcm Oberfläche sind dazu etwa 3 g Holzmehl erforderlich. Nach dem Aushärten wird das Holzmehl abgebürstet, die geschleuderte Platte weist dann eine Oberfläche auf, die einen ähnlichen Griff wie feines Sandpapier aufweist, und zur Haftung mit anderen Materialien gut geeignet ist.Then wood flour is passed through a sieve of 120 mesh per qcm is sifted out, evenly distributed in the drum while it is running. Per About 3 g of wood flour are required for a 100 square cm surface. After hardening If the wood flour is brushed off, the spun plate then has a surface that has a feel similar to fine sandpaper, and for adhesion with other materials is well suited.

Claims (4)

PATENTANSPRÜCHE: 1. Verfahren zum Aufrauhen von vorzugsweise miteinander zu verbindenden Flächen von selbst- tätig irreversibel aushärtenden Kunststoffen, insbesondere von gießbaren Polyesterurethanen, dadurch gekennzeichnet, daß auf die zur Haftung vorgesehene Fläche während der Aushärtung im Stadium eines zähviskosen Zustandes eine feinkörnige bis pulvrige Masse aufgestreut wird. PATENT CLAIMS: 1. Method for roughening, preferably with one another surfaces to be connected by self- active irreversibly hardening plastics, in particular of castable polyester urethanes, characterized in that on the surface intended for adhesion during hardening in the viscous stage State a fine-grained to powdery mass is sprinkled on. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die pulvrige bis feinkörnige Masse mit Polyesterurethan im Aushärtungszustand reagiert oder reaktionsfrei bleibt. 2. The method according to claim 1, characterized in that the powdery up to fine-grained mass reacts with polyester urethane in the hardening state or does not react remain. 3. Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die aufzustreuende Masse in Wasser löslich ist. 3. The method according to claims 1 and 2, characterized in that that the mass to be spread is soluble in water. 4. Verfahren nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß das Aufstreuen der Masse während des Schleudervorganges erfolgt. 4. The method according to claims 1 to 3, characterized in that that the spreading of the mass takes place during the spinning process.
DEP26167A 1960-12-05 1960-12-05 Process for roughening plastics which harden automatically and irreversibly, in particular castable polyester urethanes for the purpose of bonding Pending DE1141435B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP26167A DE1141435B (en) 1960-12-05 1960-12-05 Process for roughening plastics which harden automatically and irreversibly, in particular castable polyester urethanes for the purpose of bonding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP26167A DE1141435B (en) 1960-12-05 1960-12-05 Process for roughening plastics which harden automatically and irreversibly, in particular castable polyester urethanes for the purpose of bonding

Publications (1)

Publication Number Publication Date
DE1141435B true DE1141435B (en) 1962-12-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEP26167A Pending DE1141435B (en) 1960-12-05 1960-12-05 Process for roughening plastics which harden automatically and irreversibly, in particular castable polyester urethanes for the purpose of bonding

Country Status (1)

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DE (1) DE1141435B (en)

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