Acetal vs Polymer PTFE/FEP Mīkini

Hoʻohana ʻia nā Acetals i nā pūʻulu pale no nā pūʻulu carbonyl i ka synthesis organik no ka mea paʻa lākou e pili ana i ka hydrolysis e nā kumu a me ka mahalo i nā mea oxidizing a me nā mea hoʻemi.Hiki iā lākou ke pale i ka carbonyl i loko o kahi mole (ma ka hoʻololi ʻana iā ia me ka waiʻona) a i ʻole ka diol (ma ka hana ʻana me ka carbonyl).ʻO ia hoʻi, ʻo ka carbonyl, a i ʻole nā ​​ʻawaʻawa, a i ʻole nā ​​​​mea ʻelua i ʻāpana o ka mole e hoʻomalu ʻia ka reactivity.

Loaʻa iā PTFE nā waiwai mechanical pono mai nā mahana cryogenic ma 500 ° F (280 ° C) mau wela lawelawe mau.ʻOi aku ka haʻahaʻa o kona coefficient o friction ma mua o nā mea ʻē aʻe.Loaʻa iā ia kahi pae oxygen kiʻekiʻe.

Hoʻohālikelike i nā waiwai waiwai o ka Acetal a me ka Polymer PTFE/FEP

Noi Mea

ʻAcetal: Nā Bearings; Nā ʻāpana; Nā ʻāpana uila; Nā Gears; Nā ʻōwili; Pump & ʻāpana valve.

ʻO Polymer PTFE/FEP: Hoʻopili ʻana i nā kelepona; ʻAʻole lubricated bearings; O-rings; Sila; Capacitors; Hana Semiconductor; Nā ʻāpana uila wela kiʻekiʻe; Gaskets; Nā ʻāpana valve.

Mea Pono

Acetal: Haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa; ʻO ka ikaika mechanical kiʻekiʻe a me ka rigidity; Machinability; Paipai kemika maikaʻi; Ke kūpaʻa maikaʻi.

Polymer PTFE/FEP: ʻOi aku ka maikaʻi o nā waiwai dielectric; ʻAʻole i ka hapa nui o nā kemika; ʻO ka wela kiʻekiʻe a me ke kūpaʻa kemika; Haʻahaʻa haʻahaʻa haʻahaʻa o ka friction; ʻOi aku ka maikaʻi o ka pale ʻana i ka radiation; Zero moisture absorption; Pili ʻole i ka mana pinepine; Machinability.