WO1986004596A1 - Fluorocarbon polymers possessing filler materials - Google Patents
Fluorocarbon polymers possessing filler materials Download PDFInfo
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- WO1986004596A1 WO1986004596A1 PCT/DE1986/000029 DE8600029W WO8604596A1 WO 1986004596 A1 WO1986004596 A1 WO 1986004596A1 DE 8600029 W DE8600029 W DE 8600029W WO 8604596 A1 WO8604596 A1 WO 8604596A1
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- polymers
- titanate
- fluorocarbon polymers
- fluorocarbon
- filler materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/057—Metal alcoholates
Definitions
- the present invention relates to fluorocarbon polymers which contain organic titanates as fillers.
- Fluorocarbon polymers are being used to an increasing extent as materials with desired, selectively adjustable properties.
- fluorocarbon polymers can be simple polyfluorocarbons such as e.g. polymerized fluoroolefins or fluoroalkoxy polymers, copolymers such as e.g. Copolymers of fluorinated ethylene / propylene monomers or terpolymers or also block polymers such as e.g. those which consist of a polyfluorocarbon soft segment and a polyfluorocarbon hard segment which are bonded to one another by polymerisation.
- Such fluorocarbon polymers often also contain inorganic or organic fillers in order to influence the mechanical and / or electrical properties of the plastics.
- inorganic or organic fillers in order to influence the mechanical and / or electrical properties of the plastics.
- the use of such fillers has the disadvantage that other important properties of the plastics are adversely affected. For example, it has been found that the melt viscosity of the polyfluorocarbons is generally increased to such an extent by the addition of fillers that the plastics are difficult or impossible to extrude at all.
- the aim of the present invention is therefore fluorocarbon polymers which correspond in their mechanical and electrical properties to fluorocarbon polymers, but which have a lower melt viscosity than these. That goal will achieved according to the invention with polyfluorocarbons which contain organic titanates as fillers.
- JP-OS 58 16 9572 dated March 29, 1982 describes the production of water-repellent layers for clothing, in particular sports clothing, which can consist of fluorine-containing polymers with the addition of N-butyl titanate or 2-ethylhexyl titanate in combination with tripropoxy titanium stearate.
- the fluorocarbon polymers to which fillers in the form of organic titanates are added according to the invention can be any polyfluorocarbon plastics. examples for this are
- fluorinated olefins such as hexafluoroethylene, perfluoroalkoxy compounds, fluorinated vinyl or vinylidene compounds or other fluorocarbon monomers
- Block polymers e.g. Terblock polymers which can also consist of segments with completely different physical properties, for example a so-called soft segment and a so-called hard segment, which are connected to one another by chemical crosslinking;
- Block polymers mechanically blended with simple polyfluorocarbon compounds
- Polyfluorocarbon plastics that are or have been foamed using a blowing agent, as well as other fluorocarbon plastics.
- the organic titanates to be used according to the invention can be selected from a large number of titanates.
- suitable titanate compound classes are:
- alkoxy compounds such as neoalkoxytriisostearoyl titanate, isopropyltriisostearyl titanate, methacryldiisostearoyl titanate, di (cumylphenylate) oxyacetate;
- sulfonyl compounds such as dodecylbenzenesulfonyl titanate, tridodecylbenzenesulfonyl titanate;
- Phosphorus compounds such as tri (dioctylphosphato) titanate, tri (dioctyl pyrophosphate) titanate, tetraisopropyl di (dioctylphophito) titanate, tetraoctyloxititanium di- (ditridecylphosphite), tetra (2,2-diallyloxymethyl) -1,1-butoxytitanium -di (di-tridecyl phosphite),
- Chelate compounds other than those already mentioned above, such as tri (N-ethylamino-ethylamino) titanate;
- Quaternary titanates such as acrylic functional amines.
- organic titanates according to the invention lowers the melt viscosity of the fluorocarbon polymers, in particular those crosslinked with conventional fillers, to the extent that a melt extrusion is made possible.
- the melt viscosity is reduced to 1/6 of the original value, so that the material obtained can be easily extruded even if thin wall thicknesses are to be achieved.
- fluorocarbon polymers with inorganic additives are those with mineral fibers. These mineral fibers consist for example. Caicium aluminosilakates, are about 3 mm long and are contained in the plastic in an amount of about 25 wt .-%. By adding neoalkoxy-tri (N-ethylamino-ethylamino) titanate, the melt viscosity is reduced to about 1/5 of the original value, so that this material is suitable for injection molding even in very thin sections and sections.
- titanate additive according to the invention is that the elongation and tensile strength of the end product are often also increased.
- the titanate additives according to the invention can also be used for foamed fluorocarbon polymers.
- poly (ethylene tetrafluoro ethylene) (EFTE) using a blowing agent such as magnesium carbonate, azodicarbonamide, P-toluenesulfonyl compounds or the like. be foamed.
- EFTE poly (ethylene tetrafluoro ethylene)
- a blowing agent such as magnesium carbonate, azodicarbonamide, P-toluenesulfonyl compounds or the like.
- isopropyl tri (N-ethylamino-ethylamino) titanate not only achieves such a low melt viscosity that the material can be extruded, but it is additionally achieved that the size of the cells in the foam becomes smaller and the cells are distributed more evenly in the foamed material.
- the end product has much better mechanical and electrical properties than that without the addition of titanate.
- Fluorinated polyethylene / propylene is mixed with super conductive carbon black.
- This material will. e.g. used for EMI shielding, for low-noise coaxial cables or for heating cables with or without temperature control.
- carbon black has the consequence that the melt viscosity is increased in such a way that melt extrusion is difficult or impossible at all.
- melt viscosity is reduced so significantly that melt extrusion is possible without difficulty.
- ETFE 80 parts by weight of ETFE are mixed with 20 parts by weight of glass fibers in a drum.
- the mixture is then extruded at 290 ° C. in an extruder (compounding). All parts of the extruder that come into contact with the mixture consist of a metal that is not attacked by the mixture. Stainless steel, for example, is unsuitable for this. Hostalloy, for example, is suitable.
- the material obtained through compounding leaves the extruder in the form of an endless rod. This is cooled in a water bath and then cut into short pieces. In injection molding machines (or extruders), this material is again heated to about 290 ° C and injected into metal molds.
- Comparative example 2 is repeated with the difference that 0.5% by weight of neoalkoxytriisostearoyl titanate is added to the mixture of 80% ETFE and 20% glass fibers according to the invention. After thorough mixing in the drum, this material is extruded at 290 ° C. and cooled well in water and then cut into pieces. Laboratory tests show that by adding the organic titanate the melt viscosity to about 2.5 g / 10 min. has dropped.
- This material is heated to the thermoplastic temperature of 290 ° C in extruders or injection molding machines. Thanks to the low viscosity, the surface of the melt castings becomes smooth. The material flows well into the molds and also fills small and narrow parts of the mold; Cavities do not arise.
Abstract
New thermoplastic fluorocarbon polymers, which in respect of their mechanical and electrical properties correspond to conventional fluorocarbon polymers but display a lower melting viscosity, are obtained by the addition of organic titanates as filler materials. Fluorinated polymers, copolymers and bulk polymers can be used. By using at the same time a suitable expanding agent, such types of fluorocarbon polymers can also be obtained in a foam form.
Description
Mit Füllstoffen versehene Fluor-Kohlenstoff-PolymereFluorocarbon polymers with fillers
Beschreibungdescription
Die vorliegende Erfindung betrifft Fluorkohlenstoff-Polymere, die als Füllstoffe organische Titanate enthalten.The present invention relates to fluorocarbon polymers which contain organic titanates as fillers.
Fluorkohlenstoff-Polymere finden in steigendem Umfang Verwendung als Werkstoffe mit gewünschten, gezielt einstellbaren Eigenschaften. Solche Fluorkohlenstoff-Polymere können einfache Polyfluorkohlenstoffe ein, wie z.B. polymerisierte Fluorolefine oder Fluoralkoxypolymere, Copolymere wie z.B. Mischpolymere aus fluorierten Äthylen/Propylen-Monomeren oder Terpolymere oder auch Blockpolymere wie z.B. solche, die aus einem Polyfluorkohlenstoff-Weichsegment und aus einem Polyfluorkohlenstoff-Hartsegment bestehen, welche durch Polymersation miteinander verbünden sind.Fluorocarbon polymers are being used to an increasing extent as materials with desired, selectively adjustable properties. Such fluorocarbon polymers can be simple polyfluorocarbons such as e.g. polymerized fluoroolefins or fluoroalkoxy polymers, copolymers such as e.g. Copolymers of fluorinated ethylene / propylene monomers or terpolymers or also block polymers such as e.g. those which consist of a polyfluorocarbon soft segment and a polyfluorocarbon hard segment which are bonded to one another by polymerisation.
Häufig werden diese bekannten Polyfluorkohlenstoffe auch in verschäumter Form angewendet, wobei ein geeignetes Treibmittel verwendet wird.These known polyfluorocarbons are often also used in foamed form, using a suitable blowing agent.
Derartige Fluorkohlenstoff-Polymere enthalten häufig auch anorganische oder organische Füllstoffe, um die mechanischen und/oder elektrischen Eigenschaften der Kunststoffe zu beeinflussen. Die Verwendung solcher Füllstoffe bringt jedoch den Nachteil mit sich, daß andere wichtige Eigenschaften der Kunststoffe negativ beeinflußt werden. So hat sich beispielsweise herausgestellt, daß die Schmelzviskosität der Polyfluorkohlenstoffe durch den Zusatz von Füllstoffen in der Regel derart überhöht wird, daß die Kunststoffe nur schwer oder überhaupt nicht mehr extrudierbar sind.Such fluorocarbon polymers often also contain inorganic or organic fillers in order to influence the mechanical and / or electrical properties of the plastics. However, the use of such fillers has the disadvantage that other important properties of the plastics are adversely affected. For example, it has been found that the melt viscosity of the polyfluorocarbons is generally increased to such an extent by the addition of fillers that the plastics are difficult or impossible to extrude at all.
Ziel der vorliegenden Erfindung sind daher Fluorkohlenstoff-Polymere, die in ihren mechanischen und elektrisehen Eigenschaften Fluorkohlenstoff-Polymeren entsprechen, die jedoch eine niedrigere Schmelzviskosität als diese aufweisen. Dieses Ziel wird
erfindungsgemäß mit Polyfluorkohlenstoffen erreicht, die organische Titanate als Füllstoffe enthalten.The aim of the present invention is therefore fluorocarbon polymers which correspond in their mechanical and electrical properties to fluorocarbon polymers, but which have a lower melt viscosity than these. That goal will achieved according to the invention with polyfluorocarbons which contain organic titanates as fillers.
Die Verwendung von Titanaten in Fluorkohlenstoff-Polymeren ist bekannt. So beschreibt die JP-OS 58 16 9572 vom 29.3.1982 die Herstellung von wasserabstoßenden Schichten für Kleidung, insbesondere Sportkleidung, welche aus fluorhaltigen Polymeren mit einem Zusatz von N-Butyltitanat oder 2-Ethylhexyltitanat in Kombination mit Tripropoxy-Titanstearat bestehen können.The use of titanates in fluorocarbon polymers is known. JP-OS 58 16 9572 dated March 29, 1982 describes the production of water-repellent layers for clothing, in particular sports clothing, which can consist of fluorine-containing polymers with the addition of N-butyl titanate or 2-ethylhexyl titanate in combination with tripropoxy titanium stearate.
Die Fluorkohlenstoff-Polymere, die erfindungsgemäß mit Füllstoffen in Form von organischen Titanaten versetzt werden, können beliebige Polyfluorkohlenstoff-Kunststoffe sein. Beispiele hierfür sindThe fluorocarbon polymers to which fillers in the form of organic titanates are added according to the invention can be any polyfluorocarbon plastics. examples for this are
Polymere aus fluorierten Olefinen, wie Hexaf luoräthylen, Perfluoralkoxyverbindiingen, fluorierten Vinyl- oder Vinylidenverbindungen oder anderen Fluorkohlenstoff-Monomeren;Polymers from fluorinated olefins, such as hexafluoroethylene, perfluoroalkoxy compounds, fluorinated vinyl or vinylidene compounds or other fluorocarbon monomers;
Copolymere aus zwei, drei oder mehr der vorstehend genannten Monomeren;Copolymers of two, three or more of the above monomers;
Blockpolymere, z.B. Terblockpolymere, die auch aus Segmenten mit gänzlich verschiedenen physikalischen Eigenschaften bestehen können, beispielsweise aus einem sogenannten Weichsegment und einem sogenannten Hartsegment, die durch chemische Vernetzung miteinander verbunden sind;Block polymers, e.g. Terblock polymers which can also consist of segments with completely different physical properties, for example a so-called soft segment and a so-called hard segment, which are connected to one another by chemical crosslinking;
Blockpolymere, die mit einfachen Polyfluorkohlenstoffverbindungen mechanisch vermischt sind;Block polymers mechanically blended with simple polyfluorocarbon compounds;
Polyfluorkohlenstoff-Kunststoffe, die mit Hilfe eines Treibmittels verschäumt werden oder worden sind,
sowie andere Fluorkohlenstoff-Kunststoffe.Polyfluorocarbon plastics that are or have been foamed using a blowing agent, as well as other fluorocarbon plastics.
Als spezifische Beispiele seien, ohne Zuordnung zu den vorstehend genannten Verbindungsklassen, genannt:Specific examples, without being assigned to the above-mentioned classes of compounds, are:
Polyhexafluoräthylenpropylen, Polyäthylentetrafluoräthylen (ECTFE), Perfluoralkoxy-Polymere (PFA), Polymere aus fluoriertem Äthylenpropylen (FEP), Blockpolymere mit einem Poly(Vinylidenfluoridhexafluorpropylen)-Weichelement (Gum- mielement) und einem Hartsegment aus Polyvinylidenfluorid oder Vinylfluorid, -äthylentetrafluoräthylen (ETFE) oder -äthylenchlortrifluoräthylen; die vorstehend genannten Blockpolymere in Kombination mit mechanisch untergemischtem ETFE oder modifiziertem ETFE.Polyhexafluoräthylenpropylen, Polyäthylentetrafluoräthylen (ECTFE), perfluoroalkoxy polymers (PFA), polymers of fluorinated ethylene propylene (FEP), block polymers of poly (vinylidenefluoride) -Weichelement (rubber Miele ment) and a hard segment made of polyvinylidene fluoride or vinyl fluoride, -äthylentetrafluoräthylen (ETFE) or -ethylene chlorotrifluoroethylene; the above-mentioned block polymers in combination with mechanically mixed ETFE or modified ETFE.
Die erfindungsgemäß zu verwendenden organischen Titanate können aus einer Vielzahl von Titanaten ausgewählt werden. Beispiele für geeignete Titanat-Verbindungsklassen sind:The organic titanates to be used according to the invention can be selected from a large number of titanates. Examples of suitable titanate compound classes are:
1. AIkoxyverbindungen, wie Neoalkoxytriisostearoyltitanate, Isopropyltriisostearyl-Titanat, Methacryldiisostearoyl-Titanat, Di (Cumylphenylat)-Oxyacetat;1. alkoxy compounds, such as neoalkoxytriisostearoyl titanate, isopropyltriisostearyl titanate, methacryldiisostearoyl titanate, di (cumylphenylate) oxyacetate;
2. Sulfonylverbindungen, wie Dodecylbenzolsulfonyl-Titanat , Tridodecylbenzolsulfonyl-Titanat;2. sulfonyl compounds such as dodecylbenzenesulfonyl titanate, tridodecylbenzenesulfonyl titanate;
3. Phosphorverbindungen, wie Tri (dioctylphosphato)-Titanat, Tri(dioctylpyrophosphat )-Titanat, Tetraisopropyl-di(dioctylphophito)-Titanat, Tetraoctyloxititan-di-(ditridecylphosphit), Tetra (2,2-diallyloxymethyl)-1,1-butoxytitan-di(di-tridecylphosphit),3. Phosphorus compounds such as tri (dioctylphosphato) titanate, tri (dioctyl pyrophosphate) titanate, tetraisopropyl di (dioctylphophito) titanate, tetraoctyloxititanium di- (ditridecylphosphite), tetra (2,2-diallyloxymethyl) -1,1-butoxytitanium -di (di-tridecyl phosphite),
Titandi(dioctylphosphat)-oxyacetat und -di(dioctylpyrophosphat)-oxyacetat, Di(dioctylpyrophosphato)-äthylentitanat, Di(butylmethylpyrophosphato)-äthylentitanat-di(dioctylhydrogenphosphit);
4. Chelatverbindungen (andere als die vorstehend z.T. bereit genannten), wie Tri (N-ethylamino-ethylamino)-Titanat;Titanium di (dioctyl phosphate) oxyacetate and di (dioctyl pyrophosphate) oxyacetate, di (dioctyl pyrophosphato) ethylene titanate, di (butyl methyl pyrophosphato) ethylene titanate di (dioctyl hydrogen phosphite); 4. Chelate compounds (other than those already mentioned above), such as tri (N-ethylamino-ethylamino) titanate;
5. Quaternäre Titanate, wie acrylische funktionelle Amine.5. Quaternary titanates, such as acrylic functional amines.
Wie bereits erwähnt, wird durch den erfindungsgemäßen Zusatz von organischen Titanaten die Schmelzviskosität der Fluorkohlenstoffpolymeren, insbesondere der mit herkömmlichen Füll stoffen vernetzten soweit erniedrigt, daß eine Schmelzextrusi ermöglicht wird. Beispielsweise wird durch Zusatz von Isopropyltri(dioctylpyrophosphato)-Titanat die Schmelzviskosität auf 1/6 des ursprünglichen Wertes herabgesetzt, so daß das erhaltene Material sogar dann leicht extrudiertbar ist, wenn dünne Wandstärken erzielt werden sollen.As already mentioned, the addition of organic titanates according to the invention lowers the melt viscosity of the fluorocarbon polymers, in particular those crosslinked with conventional fillers, to the extent that a melt extrusion is made possible. For example, by adding isopropyl tri (dioctylpyrophosphato) titanate, the melt viscosity is reduced to 1/6 of the original value, so that the material obtained can be easily extruded even if thin wall thicknesses are to be achieved.
Ein Beispiel für mit anorganischen Zusätzen versetzte Fluorkohlenstoff-Polymere sind die mit Mineralfasern versehenen. Diese Mineralfasern bestehen z..B. aus Caiciumaluminosilakaten, sind etwa 3 mm lang und sind in dem Kunststoff in einer Menge von etwa 25 Gew.-% enthalten. Durch den Zusatz von Neoalkoxy-tri(N-ethylamino-ethylamino)-Titanat wird die Schmelzviskosität auf etwa 1/5 des ursprünglichen Wertes herabgesetz so daß dieses Material zum Spritzguß auch in sehr dünnen Sektionen und Abschnitten geeignet ist.An example of fluorocarbon polymers with inorganic additives are those with mineral fibers. These mineral fibers consist for example. Caicium aluminosilakates, are about 3 mm long and are contained in the plastic in an amount of about 25 wt .-%. By adding neoalkoxy-tri (N-ethylamino-ethylamino) titanate, the melt viscosity is reduced to about 1/5 of the original value, so that this material is suitable for injection molding even in very thin sections and sections.
Ein weiterer Vorteil des erfindungsgemäßen Titanat-Zusatzes besteht darin, daß häufig auch die Dehnung und Zugfestigkeit des Endproduktes erhöht wird.Another advantage of the titanate additive according to the invention is that the elongation and tensile strength of the end product are often also increased.
Wie bereits erwähnt, können die erfindungsgemäßen TitanatZusätze auch bei verschäumten Fluorkohlenstoff-Polymeren angewandt werden. Beispielsweise kann Poly(äthylentetrafluor
äthylen) (EFTE) mittels eines Treibmittels, wie Magnesiumcarbonat, Azodicarbonamid, P-Toluolsulfonylverbindungen o.ä. verschäumt werden. Durch einen Zusatz von Isopropyl-tri (N-ethylamino-ethylamino)-Titanat wird nicht nur eine derart niedrige Schmelzviskosität erreicht, daß das Material extrudierbar wird, sondern es wird zusätzlich erreicht, daß die Größe der Zellen in dem Schaum kleiner wird und die Zellen gleichmäßiger in dem verschäumten Material verteilt sind. Das Endprodukt weist wesentlich bessere mechanische und elektrische Eigenschaften als das ohne Titanat-Zusatz auf.As already mentioned, the titanate additives according to the invention can also be used for foamed fluorocarbon polymers. For example, poly (ethylene tetrafluoro ethylene) (EFTE) using a blowing agent such as magnesium carbonate, azodicarbonamide, P-toluenesulfonyl compounds or the like. be foamed. The addition of isopropyl tri (N-ethylamino-ethylamino) titanate not only achieves such a low melt viscosity that the material can be extruded, but it is additionally achieved that the size of the cells in the foam becomes smaller and the cells are distributed more evenly in the foamed material. The end product has much better mechanical and electrical properties than that without the addition of titanate.
Das nachstehende Beispiel erläutert die Erfindung.The following example illustrates the invention.
Ausführυngsbei spiel 1Execution example 1
Fluoriertes Polyäthylen/Propylen (FEP) wird mit superleitfähigem Ruß vermischt. Dieses Material wird. z.B. verwendet für EMI-Abschirmungen, für rauscharme Coaxialkabel oder für Heizkabel mit oder ohne Temperaturregulierung. Der Rußzusatz hat jedoch zur Folge, daß die Schmelzviskosität derart erhöht wird, daß eine Schmelzextrusion nur schwer oder gar nicht möglich ist.Fluorinated polyethylene / propylene (FEP) is mixed with super conductive carbon black. This material will. e.g. used for EMI shielding, for low-noise coaxial cables or for heating cables with or without temperature control. However, the addition of carbon black has the consequence that the melt viscosity is increased in such a way that melt extrusion is difficult or impossible at all.
Durch Zusatz von Isopropyltri(dioctylpyrophosphato)-Titanat wird die Schmelzviskosität so deutlich gesenkt, daß Schmelzextrusion ohne Schwierigkeit möglich ist.By adding isopropyl tri (dioctyl pyrophosphato) titanate, the melt viscosity is reduced so significantly that melt extrusion is possible without difficulty.
Vergleichsbeispiel 2Comparative Example 2
80 Gewichtsteile ETFE werden mit 20 Gewichtsteilen Glasfasern in einer Trommel vermischt. Anschließend wird das Gemisch bei 290°C in einem Extruder extrudiert (compounding).
Alle Teile des Extruders, die mit dem Gemisch in Verbindung kommen, bestehen aus einem Metall, das von dem Gemisch nicht angegriffen wird. Rostfreier Stahl z.B. ist hierfür ungeeignet. Geeignet dagegen ist z.B. Hostalloy.80 parts by weight of ETFE are mixed with 20 parts by weight of glass fibers in a drum. The mixture is then extruded at 290 ° C. in an extruder (compounding). All parts of the extruder that come into contact with the mixture consist of a metal that is not attacked by the mixture. Stainless steel, for example, is unsuitable for this. Hostalloy, for example, is suitable.
Das durch compounding gewonnene Material verläßt den Extruder in Form einer endlosen Stange. Diese wird in einem Wasserbad abgekühlt und danach in kurze Stücke zerschnitten. In Spritzgußmaschinen (oder auch Extrudern) wird dieses Material wiederum auf etwa 290°C erwärmt und in Metallformen gespritzt.The material obtained through compounding leaves the extruder in the form of an endless rod. This is cooled in a water bath and then cut into short pieces. In injection molding machines (or extruders), this material is again heated to about 290 ° C and injected into metal molds.
Reines ETFE läßt sich leicht verarbeiten. Nach der amerikanischen Spezifikation ASTM 3959 ist die Viskosität etwa 1 g/ 10 min. Die Oberfläche der Spritzgußteile ist glatt, und das Material fließt leicht in die Formen. Kavität kommt nicht vor.Pure ETFE is easy to process. According to the American specification ASTM 3959, the viscosity is about 1 g / 10 min. The surface of the injection molded parts is smooth and the material easily flows into the molds. There is no cavity.
Anders dagegen verhält es sich bei dem in diesem Vergleichsversuch gewonnenen Material aus 20 Gewichtsprozent Glasfaser und 80 Gewichtsprozent ETFE. Eine Labormessung ergibt, daß die Schmelzviskosität des ETFE durch den Zusatz der Glasfasern auf 10 g/ 10 min. gestiegen ist. Dies bewirkt, daß die Oberfläche des Spritzgußteiles rauh und unansehnlich ist. Da außerdem das Material nicht geschmeidig in die Formen fließt, entstehen Kavitäten. Insbesondere schmale und kleine Räume der Spritzgußform werden nicht mit Material gefüllt.However, the situation is different for the material obtained in this comparative test, consisting of 20 percent by weight of glass fiber and 80 percent by weight of ETFE. A laboratory measurement shows that the melt viscosity of the ETFE to 10 g / 10 min by adding the glass fibers. has risen. This causes the surface of the injection molded part to be rough and unsightly. In addition, since the material does not flow smoothly into the molds, cavities are created. In particular, narrow and small spaces in the injection mold are not filled with material.
Ausführungsbeispiel 2Embodiment 2
Das Vergleichsbeispiel 2 wir mit der Abweichung wiederholt, daß dem Gemisch aus 80 % ETFE und 20 % Glasfasern erfindungsgemäß 0,5 Gew.-% Neoalkoxytriisostearoyltitanat zugegeben werden Nach guter Durchmischung in der Trommel wird dieses Material bei 290°C extrudiert, in Wasser gut gekühlt und anschließend in Stücke zerschnitten.
Laborversuche zeigen, daß durch den Zusatz des organischen Titanats die Schmelzviskosität auf etwa 2,5 g/ 10 min. gesunken ist.Comparative example 2 is repeated with the difference that 0.5% by weight of neoalkoxytriisostearoyl titanate is added to the mixture of 80% ETFE and 20% glass fibers according to the invention. After thorough mixing in the drum, this material is extruded at 290 ° C. and cooled well in water and then cut into pieces. Laboratory tests show that by adding the organic titanate the melt viscosity to about 2.5 g / 10 min. has dropped.
Dieses Material wird in Extrudern oder Spritzgußmaschinen auf die thermoplastische Temperatur von 290°C erhitzt. Dank der niedrigen Viskosität wird die Oberfläche der Schmelzgußteile glatt. Das Material fließt gut in die Formen und füllt auch kleine und schmale Teile der Form aus; Kavitäten entstehen nicht.
This material is heated to the thermoplastic temperature of 290 ° C in extruders or injection molding machines. Thanks to the low viscosity, the surface of the melt castings becomes smooth. The material flows well into the molds and also fills small and narrow parts of the mold; Cavities do not arise.
Claims
1. Thermoplastische Fluorkohlenstoff-Polymere, dadurch gekennzeichnet, daß sie als Füllstoffe organische Titanate enthalten.1. Thermoplastic fluorocarbon polymers, characterized in that they contain organic titanates as fillers.
2. Polymere nach Anspruch 1, dadurch gekennzeichnet, daß sie Copolymere sind.2. Polymers according to claim 1, characterized in that they are copolymers.
3. Polymere nach Anspruch 1, dadurch gekennzeichnet, daß sie Blockpolymere sind.3. Polymers according to claim 1, characterized in that they are block polymers.
4. Polymere nach Anspruch 1, dadurch gekennzeichnet, daß sie verschäumte Polymere sind.4. Polymers according to claim 1, characterized in that they are foamed polymers.
5. Polymere nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß sie neben organischen Titanaten andere, herkömmliche Füllstoffe enthalten. 5. Polymers according to one of claims 1 to 4, characterized in that they contain other conventional fillers in addition to organic titanates.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853502994 DE3502994A1 (en) | 1985-01-30 | 1985-01-30 | FUELED FLUORED CARBON POLYMERS |
| DEP3502994.3 | 1985-01-30 |
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| Publication Number | Publication Date |
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| WO1986004596A1 true WO1986004596A1 (en) | 1986-08-14 |
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| PCT/DE1986/000029 WO1986004596A1 (en) | 1985-01-30 | 1986-01-29 | Fluorocarbon polymers possessing filler materials |
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| JP (1) | JPS62501849A (en) |
| DE (1) | DE3502994A1 (en) |
| WO (1) | WO1986004596A1 (en) |
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|---|---|---|---|---|
| CN101563375B (en) * | 2006-12-21 | 2011-10-05 | 纳幕尔杜邦公司 | Crosslinkable vinyl fluoride copolymers |
| CN108485138A (en) * | 2018-05-03 | 2018-09-04 | 泰州市亚星塑业有限公司 | A kind of polytetrafluoroethylene film formula and its preparation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1525418A (en) * | 1975-05-15 | 1978-09-20 | Kenrich Petrochemicals | Alkoxy titanate salts |
| US4424294A (en) * | 1981-07-15 | 1984-01-03 | Standard Oil Company, (Indiana) | Injection moldable amide-imide polymers and copolymers containing titanates |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1033638A (en) * | 1963-09-09 | 1966-06-22 | Du Pont | Polytetrafluoroethylene moulding powders and their preparation |
-
1985
- 1985-01-30 DE DE19853502994 patent/DE3502994A1/en not_active Ceased
-
1986
- 1986-01-29 JP JP50080486A patent/JPS62501849A/en active Granted
- 1986-01-29 WO PCT/DE1986/000029 patent/WO1986004596A1/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1525418A (en) * | 1975-05-15 | 1978-09-20 | Kenrich Petrochemicals | Alkoxy titanate salts |
| US4424294A (en) * | 1981-07-15 | 1984-01-03 | Standard Oil Company, (Indiana) | Injection moldable amide-imide polymers and copolymers containing titanates |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3502994A1 (en) | 1986-07-31 |
| JPH0115528B2 (en) | 1989-03-17 |
| JPS62501849A (en) | 1987-07-23 |
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