DE1745149A1 - Process for the production of curable plastic casting compounds with a foam structure - Google Patents
Process for the production of curable plastic casting compounds with a foam structureInfo
- Publication number
- DE1745149A1 DE1745149A1 DE19641745149 DE1745149A DE1745149A1 DE 1745149 A1 DE1745149 A1 DE 1745149A1 DE 19641745149 DE19641745149 DE 19641745149 DE 1745149 A DE1745149 A DE 1745149A DE 1745149 A1 DE1745149 A1 DE 1745149A1
- Authority
- DE
- Germany
- Prior art keywords
- production
- foam structure
- plastic casting
- casting compounds
- curable plastic
- 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
- C08J9/02—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by the reacting monomers or modifying agents during the preparation or modification of macromolecules
Description
VerfahrensurHerstellunghärtbarerKunotstqffgießmassenmitSchaumstruktur Bei der Verarbeitung härtbarer Kunststoffgie#massen, z.B. Process for the production of curable plastic casting compounds with a foam structure When processing hardenable plastic casting compounds, e.g.
Lischungen aus flüssigen, polymeren Thioäthern und Spoxyverbindungen, kann das Bedürfnis entstehen, z. B. diese zum Zwecke der Materialersparnis oder zur Erzielung einer weicheren hausse mit einer Schaumstruktur zu versehen. Zur Her3tellung proräser Kunststoffe ist es bekannt, Harz, Härtungsmittel und Treibmittel miteinander zu mischen und durch mehr oder minder grosse Wärmezufuhr oder auch kalt zu verschäumen und gleichzeitig zu härten.Mixtures of liquid, polymeric thioethers and spoxy compounds, the need may arise, e.g. B. this for the purpose of saving material or to provide a foam structure to achieve a softer bull market. To manufacture In the case of synthetic plastics, it is known to combine resin, hardening agent and blowing agent with one another to be mixed and foamed by applying more or less heat or cold and harden at the same time.
Erfindungsgegenstand ist ein Verfahren zum Herstellen von Saumstoffen durch Harten von Formmassen, die eine flüssige, härtbare Epoxyverbindung und einen flüssigen polymeren Thioäther mit reaktionsfahigen SH-Gruppen sowie ein in enthalten. Das erfindungsgemässe Verfahren ist dadurch gekennzeichnet, da# man hassen aushärtet, die zusätzlich Polymethylhydrogensiloxane der Struktur enthalten.The subject of the invention is a process for the production of hem fabrics by hardening molding compounds which contain a liquid, hardenable epoxy compound and a liquid polymeric thioether with reactive SH groups and an in. The method according to the invention is characterized in that one cures the additional polymethylhydrogensiloxanes of the structure contain.
Di Zahl der Siloxaneinheiten in der Kette hat die für derartige Polysiloxanstrukturen übliche Grosse (vgl. W.Noll "Chemie u. Technologie der Silicone", 1960, S. 162-166, 372-373).The number of siloxane units in the chain has that for such polysiloxane structures Usual size (see W. Noll "Chemie u. Technologie der Silicones", 1960, pp. 162-166, 372-373).
Erfindungsgemäss reagiert das Polymethylhydrogensiloxan beim Zusatz zu einer Mischung aus flüssigem, polymerem Thioäther mit reaktionsfähigen SH-Gruppen und flüssigen Epoxyverbindungen mit darin enthaltenen alkalischen Substanzen unter Gasbildung.According to the invention, the polymethylhydrogensiloxane reacts when added to a mixture of liquid, polymeric thioether with reactive SH groups and liquid epoxy compounds with alkaline substances contained therein Gas formation.
Alkali ch reagierende Substanzen, die in dieser Weise unter Gasabspaltung mit dem Polysiloxan in Reaktion treten, sind die zur Härtung von Epoxyverbindungen üblichen und an sich bekannten Aminoverbindungen.Alkali ch reactive substances, which in this way with elimination of gas react with the polysiloxane are used to cure epoxy compounds customary and known amino compounds.
Die KunstatoffgieBmassen kann je nach den gewünschten Eigenschaften des geschäumten Endproduktes noch Füllstoffe enthalten. Das liaß der Aufschäumung kann durch die Art und Venge der zugegebenen, die Gasabspaltung bewirkenden Stoffe variiert werden. Es ist aber zweckmässig, die Schäumung nur so stark vorzunehmen, da# die Eigenfestigkeit des entstandenen Schaumes nicht zu weit absinkt. Um gleiohmässige. nicht zu grosse Poren im geschäumten Kunstatoffmaterial zu erzielen, ist es zweckmässig, die zuzusetzenden FUllstoffe in möglichst feine Verteilung zu bringen. Durch IrZahlen der mit den Füll-und Treibstoffen vereetzten Kunststoffmassen, z. B. auf einem Dreiwalzenstuhl, können die Voraussetzungen für beeanders feine Porenstruckturen geschaffen werden.The KunstatoffgieBmassen can depending on the desired properties the foamed end product still contain fillers. That left the frothing can be determined by the type and quantity of the substances that are added and cause the gas separation can be varied. However, it is advisable to make the foaming only as strong as because # the inherent strength of the resulting foam does not drop too far. To uniform. To achieve pores that are not too large in the foamed plastic material, it is advisable to to distribute the fillers to be added as finely as possible. By ir numbers the plastic masses interlaced with the fillers and fuels, e.g. B. on a three-roller mill, can qualify for beeanders fine pore structures be created.
Die nach dem erfindungsgemässen Verfahren hergestellten achaumstoffe finden beispielsweise Anwendung als isolierender Baustoff zur Wärme- und Schalldämmung, zum Ausschdumen schwer zugänglicher Hohlräume, ferner auch nur Herstellung leichter Modellformen guter Festigkeit.The foam materials produced by the process according to the invention are used, for example, as an insulating building material for heat and sound insulation, for evacuating hard-to-reach cavities, and also just making it easier to manufacture Good strength model molds.
Anhand des nachstehenden Beispiels wird die Erfindung naher erläutert : B e i s p i e 1 Zu einer Mischung von 100 Gewichtsteilen Epoxyd-Gie#harz (Epoxy-Äquivalent im Bereich von 225 bis 260), 80 bis 100 Gewichtsteilen ches @äillstoffes, wie aaolin, wuarzmehl, Kreide, und 2 bis 20 Gewicktsteilen eines Polymethylhydrogensilcxanes der Struktur werden 10 bis 100 Gewichtsteile eines flüssigen Pclysulfids der ungefähren Zusammensetzung HS (C2H4-O-CH2-O-C2H4-S-S)6-C2H4-O-CH2-O-C2H4-SH gegeben. Der entstandenen Lischung werden bie 10 Gewichtsteile Triäthy @ntetr@@in zugesetzt. Die unct läumung und Hdrtung setzt bei Raumtemperatur ein.The invention is explained in more detail using the following example: Example 1 To a mixture of 100 parts by weight of epoxy casting resin (epoxy equivalent in the range from 225 to 260), 80 to 100 parts by weight of ches @ aillstoffes, such as aaolin, hot meal, chalk , and 2 to 20 parts by weight of a polymethylhydrogensilcane of the structure 10 to 100 parts by weight of a liquid plysulfide of the approximate composition HS (C2H4-O-CH2-O-C2H4-SS) 6-C2H4-O-CH2-O-C2H4-SH are added. 10 parts by weight of triethy @ ntetr @ @ in are added to the resulting mixture. The unct leaning and hardening starts at room temperature.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM0076273 | 1964-09-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1745149A1 true DE1745149A1 (en) | 1971-08-12 |
Family
ID=7316926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19641745149 Pending DE1745149A1 (en) | 1964-09-15 | 1964-09-15 | Process for the production of curable plastic casting compounds with a foam structure |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1745149A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4352848A (en) * | 1979-08-28 | 1982-10-05 | Goodyear Aerospace Corporation | Transparencies produced from epoxy resins cured with adducts of trimethoxyboroxine and benzyl alcohol and interlayers of mercaptan resins |
| US4412052A (en) * | 1980-11-06 | 1983-10-25 | Goodyear Aerospace Corporation | Moisture permeation resistant resins from epoxy resins, polymercaptans, and aminosilanes |
-
1964
- 1964-09-15 DE DE19641745149 patent/DE1745149A1/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4352848A (en) * | 1979-08-28 | 1982-10-05 | Goodyear Aerospace Corporation | Transparencies produced from epoxy resins cured with adducts of trimethoxyboroxine and benzyl alcohol and interlayers of mercaptan resins |
| US4412052A (en) * | 1980-11-06 | 1983-10-25 | Goodyear Aerospace Corporation | Moisture permeation resistant resins from epoxy resins, polymercaptans, and aminosilanes |
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