Kusiyana Pakati pa Nylon ndi PTFE

Nayiloni ndi PTFE ndi ma polima opangidwa ndi manmade omwe amagwiritsidwa ntchito kwambiri pamakampani a polima.Nayiloni ndi polyamide ndipo polima ndi polima wa fluoro.Onsewa ali ndi kulemera kwakukulu kwa maselo ndipo ndi thermoplastics.PTFEndi phobic yamadzi, zinthu zosasunthika zomwe zimakhala ndi machulukidwe apamwamba amagetsi, komanso kugunda kwapansi kwambiri.Nayiloni ndi nsalu ya silky ndipo ndi njira ina yopangira zitsulo komanso zopanda zitsulo, kuphatikizapo mkuwa, bronze, matabwa, mapulasitiki, ndi mphira.

Kodi Nylon ndi chiyani

Nayiloni ndi polima aliphatic, polyamide yomwe imagwiritsidwa ntchito kwambiri m'mafakitale ambiri.Nayiloni ndi thermoplastics.Amagwiritsidwa ntchito ngati chonyamulira, komanso kuvala zinthu.Kugwiritsiridwa ntchito kofala kwa nayiloni kumakhala m'malo mwa bronze, mkuwa, chitsulo, ndi aluminiyamu.Kuphatikiza apo, itha kugwiritsidwa ntchito ngati zinthu zina zamatabwa, mapulasitiki, ndi mphira.

Nayiloni ndi zinthu za silky zomwe zinayamba kupangidwa ndi Wallace Carothers mu 1935. Nylons amapangidwa kuchokera ku hexamethylenediamine ndi adicarboxylic acid (1: 1 chiŵerengero) pamaso pa madzi, mu riyakitala.

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Ulusi wa nayiloni umagwiritsidwa ntchito kupanga zotchinga zaukwati, zingwe mu zida zoimbira, makapeti, mapaipi, mahema, ndi zovala.Nayiloni yolimba imagwiritsidwanso ntchito m'mafakitale ena kupanga zisa ndi zida zamakina kuphatikiza magiya ndi zomangira zamakina.Extrusion, kuponyera, ndi kuumba jekeseni ndi njira zomwe zimagwiritsidwa ntchito popanga ma nayiloni amtundu wa engineering.

PTFE ndi chiyani?

PTFE ndi fluoropolymer yopanga yomwe imadziwikanso kuti polytetrafluoroethylene (PTFE).Ndi zinthu zomwe zidapezeka mwangozi ndi katswiri wamankhwala a Dupont, Dr. Roy Plunkett mu 1960, pomwe amafufuza zinthu zina zoziziritsira.

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Ili ndi zinthu zambiri zomwe zimagwiritsidwa ntchito pazamalonda chifukwa cha mawonekedwe ake apadera amthupi komanso mankhwala.Ndi zinthu za hydrophobic.Chifukwa chake, ngakhale madzi kapena njira zomwe zili ndi madzi sizinganyowetse polima.polima amagwiritsidwa ntchito kwambiri muzophika zopanda ndodo ngati zokutira.Izi zimagwiritsidwanso ntchito ngati lubricant chifukwa zimachepetsa kukangana.Kugwirizana kwa PTFE ndikokhazikika;choncho, ali ndi otsika reactivity mankhwala ndi mkulu kuwira mfundo.Komanso, ali wabwino madutsidwe magetsi.polima ndi zinthu za thermoplastic, zomwe zikutanthauza kuti katundu wake amasintha akatenthedwa kapena kuzizira.PTFE ili ndi zinthu zonsezi zothandiza chifukwa cha kapangidwe kake ka maselo.

Kodi pali kusiyana kotani pakati pa nayiloni ndi PTFE?

• Mankhwala omwe amapezeka mu polima nayiloni ndi Carbon, Hydrogen, Oxygen, and Nitrogen.polima ili ndi Carbon ndi Fluorine kokha.

• Nayiloni ndi PTFE zonse zili ndi mphamvu za intramolecular, pomwe nayiloni ndi "hydrogen bonds" ndipo ya polima ndi "London dispersion forces."

• Monomer (gawo lobwereza) la nayiloni ndi (-NH--[CH2]5-CO-) ndipo la PTFE ndi (-F2-CC-F2).

• Nayiloni ndi hydrophilic material pamene PTFE ndi hydrophobic material.

PS: Lumikizanani nafe PTFE anamaliza mankhwala free chitsanzo