DE1570925A1 - Process for the production of cold-hardened plastic casting compounds with a foam structure - Google Patents
Process for the production of cold-hardened plastic casting compounds with a foam structureInfo
- Publication number
- DE1570925A1 DE1570925A1 DE19611570925 DE1570925A DE1570925A1 DE 1570925 A1 DE1570925 A1 DE 1570925A1 DE 19611570925 DE19611570925 DE 19611570925 DE 1570925 A DE1570925 A DE 1570925A DE 1570925 A1 DE1570925 A1 DE 1570925A1
- Authority
- DE
- Germany
- Prior art keywords
- cold
- production
- plastic casting
- foam structure
- casting compounds
- 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
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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
-
- 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
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Description
Verfahren zur Herstellung kalthärtbarer Kunststoffgießmassen mit Schaumstruktur Bei der Verarbeitung kalthärtbarer Kunststoffgießmassen, z. B. Process for the production of cold-curable plastic casting compounds with Foam structure When processing cold-curable plastic casting compounds, e.g. B.
Epoxydharzen, kann das Bedürfnis entstehen, z. 3. diese zum Zwecke der Materialersparnis oder zur Erzielung einer weicheren Masse mit einer Schaumstruktur zu versehen. Zur Herstellung poröser Kunststoffe ist es bekannt, Harz, Härtungsmittel und Treibmittel miteinander su mischen und durch mehr oder minder große Temperaturzufuhr oder auch kalt zu verschäumen und gleichseitig zu härten.Epoxy resins, the need may arise, e.g. 3. this for the purpose the material savings or to achieve a softer mass with a foam structure to provide. For the production of porous plastics it is known to use resin, hardening agents Mix and propellants with one another and by applying a greater or lesser amount of temperature or cold foaming and hardening at the same time.
Es wurde nun gefunden, daß ein Verfahren @um Ver@chäumen und gleichzeitigen Härten von kalthärtbaren Kunststoffgießmassen taurin besteht, daß eine flüssige, härtbare Epoxyverbindung Dit einem Polymethylhydrogensiloxan der Struktur und einem Amin unter Bewegung und Formgebung versetzt und die Reaktion bei Raumtemperatur durchgeführt wird. in solches Polysiloxan, das s. Bo als wasserabsto@endes Imprägniermittel bekannt ist, ist @@@ Polymethylhydrogensiloxan der Struktur und reagi@@ im Zusatz zu einer flüssigen Epoxydharzmischung mit darin enthaltenen alkalischen Bubstanzen.It has now been found that a process for foaming and simultaneous curing of cold-curable plastic casting compounds consists of taurine, that a liquid, curable epoxy compound with a polymethylhydrogensiloxane has the structure and an amine is added with agitation and shaping and the reaction is carried out at room temperature. In such a polysiloxane, which is known as a water-repellent impregnating agent, is @@@ polymethylhydrogensiloxane of the structure and reagi @@ in addition to a liquid epoxy resin mixture containing alkaline substances.
Alkalisch reagierende Substanzen, die in dieser Weise unter Gasbildung mit des Polysiloxan in Reaktion treten, sind die zur Härtung von Epoxydharzen üblichen und an sich bekannten Amineverbindungen.Alkaline reacting substances that form gas in this way react with the polysiloxane are the usual methods for curing epoxy resins and amine compounds known per se.
Die Kunststoffgießmasse kann je nach den gewünschten Bigenschaften des geschunten Endproduktes noch Füllstoffe enthalten.The plastic casting compound can, depending on the desired properties of the pounded end product still contain fillers.
Da Maß der Aufschäumung kann durch die Art und Menge der zugegebenen, die Gasabspaltung bewirkenden Stoffe Varliert werden.The degree of foaming can be determined by the type and amount of added, the substances causing gas separation are varied.
Es ist aber zweckmäßig, die Schäunung nur so stark vorzunchmen, daß die Eigenfestigkeit des entstandenen Schammes nicht zu weit absinkt.It is advisable, however, to advance the fencing only so much that the inherent strength of the resulting scum does not drop too far.
Um gleichmäßige, nicht zu große Poren im geschäumten Kunststeffmaterial zu erzielen, ist es zweckmäßig, di. zuzusetzenden F@@letoffe in möglichst feine Verteilung zu bringen. Durch Maklen der mit den Füll- und Treibstoffen versetzten Kunststoffmassen, 1. @. auf einem Drei-Walzen-Stuhl, können die Voraussetzungen für besondere feine Porenst@kturen geschaffen werden.To ensure uniform, not too large pores in the foamed synthetic material to achieve, it is expedient to di. to be added F @@ letoffe in the finest possible Bring distribution. By brokering those mixed with the fillers and fuels Plastic compounds, 1. @. on a three-reel chair, the prerequisites can for particularly fine pore structures.
Anhand des nachstehenden Beispiels wird die Erfindung näher erläutert: Beispiel: Eine Mischung aus 100 Gewichtsteilen Epoxyd-Gießharz (Fpoxyd-Äquivalent im Bereich von 225 bis 260) und bis zu 100 Gewichtsteilen Füllstoff, wie Kaolin, Quarzmehl, Kreide, wird mit 2 bis 12 Gewichtsteilen eines Polyhydrogensiloxanz verzeitzt. Ein solches Polymethylhydrogensiloxan, wie es z. B. allgemein als Textilimprägniermittel Verwendung findet, hat die Struktur Zur Schäumung und Aushärtung werden dann 8 bis 10 Gewichtsteile eines polyfunktionellen Amins, wie Triäthylentetramin, zugegeben, wobei die Reaktion bei Raumtemperatur abläuft.The invention is explained in more detail using the following example: Example: A mixture of 100 parts by weight of epoxy casting resin (Fpoxy equivalent in the range from 225 to 260) and up to 100 parts by weight of filler, such as kaolin, quartz powder, chalk, is mixed with 2 to 12 Parts by weight of a polyhydrogensiloxane timed. Such a polymethylhydrogensiloxane as it is e.g. B. is generally used as a textile impregnation agent, has the structure For foaming and curing, 8 to 10 parts by weight of a polyfunctional amine, such as triethylenetetramine, are then added, the reaction taking place at room temperature.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM0063193 | 1961-03-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1570925A1 true DE1570925A1 (en) | 1970-03-26 |
Family
ID=7310698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19611570925 Pending DE1570925A1 (en) | 1961-03-16 | 1961-03-16 | Process for the production of cold-hardened plastic casting compounds with a foam structure |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1570925A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0290881A2 (en) * | 1987-05-09 | 1988-11-17 | Sto Aktiengesellschaft | Process for preparing lightweight construction elements |
-
1961
- 1961-03-16 DE DE19611570925 patent/DE1570925A1/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0290881A2 (en) * | 1987-05-09 | 1988-11-17 | Sto Aktiengesellschaft | Process for preparing lightweight construction elements |
| EP0290881A3 (en) * | 1987-05-09 | 1990-02-07 | Sto Ag | Process for preparing lightweight construction elements |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| SH | Request for examination between 03.10.1968 and 22.04.1971 |