Teflono priedai alyvoms

Teflono priedai alyvoms

Rūšis

Klampumas prie 40ºC, mm2 /s

Teflono koncentracija, %

Pagrindas

Panaudojimas, savybės

 

 

Molyduval

Additive PTFE 10

Additive PTFE 30

Additive PTFE 50

 

 

 

15 – 22

680

680

 

 

 

10

30

50

 

 

 

PAO + Ester +PTFE

 

Sintetinės alyvos nešiklio PTFE priedai.

Saujųjų teflono (PTFE) tepiklių suspensija sintetinėje alyvoje kaip priedas reduktorinėms, vakuuminėms, optikos ir elektronikos alyvoms. Pagerina tepimo efektą esant aukštoms temperatūroms ir slėgiams.

 

PTFE priedų guolių tepalai.

Teflonas (PTFE) : Polytetrafluorethylene 

Polytetrafluorethylene (PTFE) is widely used as an additive in lubricating oils and greases. Due to the low surface energy of PTFE, stable unflocculated dispersions of PTFE in oil or water can be produced. Contrary to the other solid lubricants discussed, PTFE does not have a layered structure. The macro molecules of PTFE slip easily along each other, similar to lamellar structures. PTFE shows one of the smallest coefficients of static and dynamic friction, down to 0.04. Operating temperatures are limited to about 260°C.

PTFE tepiklių kompozitai : Composites

Self lubricating composites: Solid lubricants as PTFE, graphite, MoS2 and some other anti friction and anti wear additives are often compounded in polymers and all kind of sintered materials. MoS2 for example is compounded in materials for sleeve bearings, elastomere O-rings, carbon brushes etc. Solid lubricants are compounded in plastics to form a "self-lubricating" or "internally lubricated" thermoplastic composite. PTFE particles for example compounded in the plastic form a PTFE film over the mating surface resulting in a reduction of friction and wear. MoS2 compounded in nylon reduces wear, friction and stick-slip. Furthermore it acts as a nucleating agent effecting in a very fine crystalline structure. The primary use of graphite lubricated thermoplastics is in applications operating in aqueous environments.

Dispersijos su PTFE :  Spraying/dipping/brushing

Dispersion of solid lubricant as an additive in oil, water or grease is most common used. For parts that are inaccessible for lubrication after assembly a dry film lubricant can be sprayed. After the solvent evaporates, the coating cures at room temperature to form a solid lubricant. Pastes are grease like lubricants containing a high percentage of solid lubricants used for assembly and lubrication of highly loaded, slow moving parts. Black pastes generally contain MoS2. For high temperatures above 500°C pastes are composed on the basis of metal powders to protect metal parts from oxidation necessary to facilitate disassembly of threaded connections and other assemblies