Qeb: Polyamide yog dab tsi?
Polyamide, tseem hu ua nylon, yog cov khoom siv hluavtaws uas siv dav hauv ntau qhov kev lag luam vim nws cov khoom siv zoo heev, tshuaj lom neeg, thiab kav ntev. Nws yog thawj zaug tsim nyob rau xyoo 1930 los ntawm ib pab pawg kws tshawb fawb ntawm DuPont, coj los ntawm Wallace Carothers, thiab txij li ntawd los tau dhau los ua ib qho tseem ceeb tshaj plaws engineering plastics hauv ntiaj teb.
Polyamide yog ib hom thermoplastic polymer uas yog tsim los ntawm kev sib xyaw diamine thiab dicarboxylic acid los ntawm cov txheej txheem hu ua polycondensation. Lub resulting polymer muaj arepeating unit ntawm amide pawg (-CO-NH-) uas muab nws cov yam ntxwv yam ntxwv. Cov polyamide feem ntau yog nylon 6,6, uas yog tsim los ntawm hexamethylenediamine thiab adipic acid.
Polyamide muaj ntau yam khoom tshwj xeeb uas ua rau nws zoo tagnrho rau ntau yam kev siv. Nws yog cov khoom siv muaj zog thiab ruaj khov uas tuaj yeem tiv taus qhov kub thiab txias, ua rau nws tsim nyog siv rau hauv kev ua haujlwm siab xws li cov khoom siv tsheb, cov khoom siv hluav taws xob, thiab cov tshuab ua haujlwm. Nws kuj tseem tiv taus cov tshuaj lom neeg, kev puas tsuaj, thiab kev cuam tshuam, ua rau nws yog qhov kev xaiv nrov rau cov khoom uas yuav tsum tau tiv taus qhov hnyav.
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm polyamide yog nws cov versatility. Nws tuaj yeem yooj yim molded rau hauv ntau yam duab thiab ntau thiab tsawg, ua rau nws haum rau siv nyob rau hauv ntau yam khoom. Nws tseem tuaj yeem ntxiv dag zog nrog lwm cov ntaub ntawv xws li iav fibers lossis carbon fibers los txhim kho nws lub zog thiab tawv.
Polyamide yog siv nyob rau hauv ntau yam kev lag luam, xws li tsheb, aerospace, electronics, thiab cov khoom siv. Hauv kev lag luam automotive, nws yog siv los ua cov khoom xws li lub cav npog, cua nkag manifolds, thiab roj tso tsheb hlau luam. Hauv kev lag luam aerospace, nws yog siv los ua cov khoom xws li aircraft cav qhov chaw thiab cov khoom siv. Hauv kev lag luam hluav taws xob, nws yog siv los ua cov khoom siv xws li cov khoom sib txuas, cov khoom siv hluav taws xob, thiab cov khoom siv hluav taws xob. Hauv kev lag luam khoom siv, nws yog siv los ua cov khoom lag luam xws li khaub ncaws, lub nra, thiab cov khoom ua si.
Polyamide kuj tau siv hauv kev lag luam kho mob rau ntau yam kev siv. Nws yog siv los ua cov sutures, catheters, thiab lwm yam khoom siv kho mob vim nws biocompatibility thiab muaj peev xwm tiv taus cov txheej txheem kom tsis muaj menyuam.
Hauv kev xaus, polyamide yog ntau yam thiab ruaj khov hluavtaws polymer uas muaj ntau yam kev siv hauv ntau yam lag luam. Nws cov khoom tshwj xeeb ua rau nws yog cov khoom siv zoo tshaj plaws rau kev ua haujlwm siab uas xav tau lub zog, ua haujlwm ntev, thiab tshuaj lom neeg ua haujlwm. Raws li thev naus laus zis txuas ntxiv mus, nws zoo li polyamide tseem yuav ua lub luag haujlwm tseem ceeb hauv kev tsim cov khoom tshiab thiab thev naus laus zis.
Nylon (polyamide) hom thiab daim ntawv thov kev taw qhia
1. Polyamide resin (polyamide), hu ua PA, feem ntau hu ua Nylon 2. Lub ntsiab naming method: raws li tus naj npawb ntawm carbon atoms nyob rau hauv txhua repepawg amide. Thawj tus lej ntawm nomenclature hais txog cov pa roj carbon atoms ntawm diamine, thiab cov lej hauv qab no yog hais txog cov pa roj carbon atoms ntawm dicarboxylic acid. 3. Hom nylon: 3.1 Nylon-6 (PA6) Nylon-6, tseem hu ua polyamide-6, yog polycaprolactam. Translucent los yog opaque milky dawb resin. 3.2Nyeem ntxiv…
Nylon fiber ntau yog dab tsi?
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