DE908714C - Brake and clutch linings - Google Patents
Brake and clutch liningsInfo
- Publication number
- DE908714C DE908714C DEF5729A DEF0005729A DE908714C DE 908714 C DE908714 C DE 908714C DE F5729 A DEF5729 A DE F5729A DE F0005729 A DEF0005729 A DE F0005729A DE 908714 C DE908714 C DE 908714C
- Authority
- DE
- Germany
- Prior art keywords
- brake
- clutch linings
- silicic acid
- polyesters
- clutch
- 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.)
- Expired
Links
- 239000011230 binding agent Substances 0.000 claims description 7
- 229920000728 polyester Polymers 0.000 claims description 7
- 235000012239 silicon dioxide Nutrition 0.000 claims description 5
- 239000010425 asbestos Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910052895 riebeckite Inorganic materials 0.000 claims description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical class O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 3
- -1 silicic acid ester Chemical class 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000007711 solidification Methods 0.000 claims 1
- 230000008023 solidification Effects 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012765 fibrous filler Substances 0.000 description 1
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- CWBIFDGMOSWLRQ-UHFFFAOYSA-N trimagnesium;hydroxy(trioxido)silane;hydrate Chemical compound O.[Mg+2].[Mg+2].[Mg+2].O[Si]([O-])([O-])[O-].O[Si]([O-])([O-])[O-] CWBIFDGMOSWLRQ-UHFFFAOYSA-N 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/021—Composition of linings ; Methods of manufacturing containing asbestos
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Braking Arrangements (AREA)
Description
Brems- und Kupplungsbeläge Brems- und Kupplungsbeläge werden bekanntlich in der Weise hergestellt, daß faserige Füllstoffe, insbesondere Asbest oder auch Metallwolle, zusammen mit verschiedenen kleineren Zusätzen weiterer Füllstoffe, wie Eisenoxyd, Talkum, Messingspänen usf., mit einem Bindemittel, wie synthetischem Kautschuk, Kunstharz, z. B. Phenolformaldehyd, unter Druck und bei erhöhter Temperatur gebunden und verformt werden.Brake and clutch linings Brake and clutch linings are known Manufactured in such a way that fibrous fillers, especially asbestos or also Metal wool, together with various smaller additions of other fillers, such as iron oxide, talc, brass shavings, etc., with a binder such as synthetic Rubber, synthetic resin, e.g. B. phenol formaldehyde, under pressure and at elevated temperature bound and deformed.
Diese bekannten Massen haben den Nachteil, daß das organische Bindeharz sich infolge der hohen, an der Oberfläche entstehenden Reibungswärme zersetzt, wobei Glanzkohlenstoff abgeschieden wird, der seinerseits die metallische Gegenfläche mechanisch stark abnutzt.These known compositions have the disadvantage that the organic binder resin decomposes as a result of the high frictional heat generated on the surface, whereby Bright carbon is deposited, which in turn is the metallic counter surface mechanically heavily worn.
Es wurde nun gefunden, daß man Brems- und Kupplungsbeläge in der Weise herstellen kann, daß man als Bindemittel für die Füllstoffe Kieselsäureester bzw. Polyester benutzt. Die Massen werden vorzugsweise derart gehärtet und geformt, daß sie unter Druck auf erhöhte Temperaturen erhitzt werden. Dabei findet eine Kondensation des Bindemittels bis zu hochpolymeren, S'02 -reichen Polyestern oder bis zur reinen Kieselsäure statt. Der gewünschte Grad der Kondensation kann durch Behandlungsdauer und Höhe der Temperatur eingestellt werden.It has now been found that you can brake and clutch linings in the way can produce that one as a binder for the fillers silicic acid esters or Polyester used. The masses are preferably hardened and shaped in such a way that they are heated to elevated temperatures under pressure. A condensation takes place of the binder up to high polymer, S'02 -rich polyesters or up to the pure Silica instead. The desired degree of condensation can be achieved by treatment time and the level of the temperature can be set.
Gegenüber dem bisherigen Stand der Technik haben diese neuen Beläge den Vorzug, daß sie entweder gar keine oder nur noch sehr wenig organische Anteile enthalten. Bei ihrer Verwendung entfallen also die vorgenannten, aus der thermischen Unbeständigkeit organischer Bindeharze resultierenden Schwierigkeiten. Andererseits sind zu ihrer Herstellung keine prinzipiell anderen Mittel erforderlich als bei den bisher üblichen Belägen, abgesehen davon, daß cum Härten der erfindungsgemäßen Massen höhere Temperaturen als beispielsweise bei Phenolformaldehydharz gebundenen Massen, nämlich ungefähr 3oo bis 4oo° C, erforderlich sind.Compared to the previous state of the art, these have new coverings the advantage that they either have no or only very little organic components contain. When they are used, the aforementioned, from the thermal one, are omitted Inconsistency of organic binder resins results in difficulties. on the other hand In principle, no other means are required for their production than for the previously usual coverings, apart from that cum hardening the Compositions according to the invention have higher temperatures than, for example, phenol-formaldehyde resin Bound masses, namely about 3oo to 4oo ° C, are required.
Beispiele I. 6o Gewichtsteile Chrysotilasbest werden mit 4o Gewichtsteilen eines gelartigen Kieselsäuremethylpolyesters mit einem Gehalt von 6I % SiO2 in einem Knetapparat gemischt. Die gründlich homogenisierte Mischung wird in einer heizbaren Matrize unter einem Druck von 2oo kg/cm2 bei 4oo°C während I5 Minuten verformt und gehärtet. Der entstandene Preßkörper wird als Bremsbelag verwendet.Examples I. 60 parts by weight of chrysotile asbestos are mixed with 40 parts by weight a gel-like silicic acid methyl polyester with a content of 61% SiO2 in one Mixing kneader. The thoroughly homogenized mixture is in a heatable The die is deformed under a pressure of 2oo kg / cm2 at 4oo ° C for 15 minutes and hardened. The resulting pressed body is used as a brake lining.
2. 6o Gewichtsteile Asbestgewebe in Form mehrerer Lagen werden mit 4o Gewichtsteilen eines Kieselsäurebutylpolyesters getränkt und I5 Minuten bei I5o° C vorgetrocknet. Das Schichtenpaket wird sodann in einer geeigneten heizbaren Matrize unter einem Druck von 2oo kg/cm2 I5 Minuten auf 4oo° C erhitzt und dabei verformt und gehärtet. Es entsteht ein Schichtpreßstöff dichter Struktur, dessen Festigkeitswerte noch besser sind als diejenigen der nach Beispiel I hergestellten Körper und der ebenfalls als Brems- und Kupplungsbelag geeignet ist.2. 6o parts by weight of asbestos fabric in the form of several layers are included 40 parts by weight of a silicic acid butyl polyester impregnated and 15 minutes at 15o ° C pre-dried. The stack of layers is then placed in a suitable heatable die heated to 400 ° C for 15 minutes under a pressure of 2oo kg / cm2 and deformed in the process and hardened. The result is a laminate with a dense structure, its strength values are even better than those of the body produced according to Example I and the is also suitable as a brake and clutch lining.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF5729A DE908714C (en) | 1951-03-09 | 1951-03-09 | Brake and clutch linings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF5729A DE908714C (en) | 1951-03-09 | 1951-03-09 | Brake and clutch linings |
Publications (1)
Publication Number | Publication Date |
---|---|
DE908714C true DE908714C (en) | 1954-04-08 |
Family
ID=7084717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEF5729A Expired DE908714C (en) | 1951-03-09 | 1951-03-09 | Brake and clutch linings |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE908714C (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2048799A (en) * | 1931-10-22 | 1936-07-28 | Du Pont | Silicon esters of modified polyhydroxy alcohols |
-
1951
- 1951-03-09 DE DEF5729A patent/DE908714C/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2048799A (en) * | 1931-10-22 | 1936-07-28 | Du Pont | Silicon esters of modified polyhydroxy alcohols |
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