Cov khoom siv nylonyog dav siv, me me mus rau nylon stockings, loj rau lub tsheb cav peripheral qhov chaw, thiab lwm yam., tau them tag nrho cov yam ntawm peb lub neej.Cov chaw sib txawv, cov kev xav tau rau cov khoom siv nylon kuj txawv, xws li kub tsis kam, hnav tsis kam thiab cuam tshuam, tshuaj lom neeg ua haujlwm, pob tshab thiab resilience.
Pa nylon, feem ntau yog hais txog PA6, PA66 ob hom ntau yam.Cov pa nylon hauv kev txhim kho, nplaim hluav taws kub thiab lwm yam kev hloov kho yuav tseem muaj qhov tsis zoo, xws li muaj zog hydrophilicity, kub tsis kam, tsis zoo pob tshab thiab lwm yam, txwv tsis pub siv ntau dua.
Yog li ntawd, txhawm rau txhim kho qhov tsis txaus thiab ua kom cov yam ntxwv tshiab, feem ntau los ntawm kev qhia cov khoom siv hluavtaws tshiab, peb tuaj yeem tau txais cov nylon tshwj xeeb nrog cov yam ntxwv sib txawv uas tuaj yeem ua tau raws li kev siv sib txawv, feem ntau muab faib uakub nylon, ntev carbon saw nylon, pob tshab nylon, bio-based cov ntaub ntawv nylon thiab nylon elastomer thiab lwm yam.
Tom qab ntawd, cia peb tham txog pawg ntawm nylon tshwj xeeb, lawv cov yam ntxwv thiab kev siv.
Classification thiab daim ntawv thov piv txwv ntawmtshwj xeeb nylon
1. Kub kub tsis kam - siab kub nylon
Ua ntej ntawm tag nrho cov, high-temperature nylon hais txog cov ntaub ntawv nylon uas tuaj yeem siv rau hauv ib puag ncig siab tshaj 150 ° C rau lub sijhawm ntev.
Lub siab kub tsis kam ntawm qhov kub siab nylon feem ntau tau los ntawm kev qhia cov khoom tsis muaj ntxhiab monomers.Piv txwv li, tag nrho-aromatic nylon, feem ntau yog DuPont's Kevlar, uas yog npaj los ntawm cov tshuaj tiv thaiv ntawm p-benzoyl chloride nrog p-phenylenediamine los yog p-amino-benzoic acid, hu ua PPTA, tuaj yeem tuav lub zog zoo ntawm 280 °. C rau 200 h.
Txawm li cas los xij, tag nrho cov aromatic siabkub nylonNws tsis yog qhov zoo rau kev ua haujlwm thiab nyuaj rau kev ua tiav kev txhaj tshuaj molding, yog li lub semi-aromatic siab kub nylon ua ke nrog aliphatic thiab aromatic yog nyiam dua.Tam sim no, feem ntau cov nylon kub kub ntau yam, xws li PA4T, PA6T, PA9T, PA10T, thiab lwm yam, yog ib txwm muaj zog semi-aromatic high-kub nylon polymerized los ntawm cov saw ncaj aliphatic diamine thiab terephthalic acid.
High kub nylon yog dav siv nyob rau hauv automotive qhov chaw, mechanical qhov chaw thiab hluav taws xob / hluav taws xob qhov chaw.
2. High toughness - ntev carbon saw nylon
Qhov thib ob yog ntev carbon saw nylon, uas feem ntau yog hais txog cov ntaub ntawv nylon nrog ntau tshaj 10 methylene hauv cov saw hlau molecular.
Ntawm ib sab, ntev carbon saw nylon muaj ntau pawg methylene, yog li nws muaj siab toughness thiab softness.Ntawm qhov tod tes, qhov txo qhov ntom ntawm amide pawg ntawm cov saw molecular zoo heev txo cov hydrophilicity thiab txhim kho nws qhov ruaj khov, thiab nws cov ntau yam yog PA11, PA12, PA610, PA1010, PA1212 thiab lwm yam.
Raws li ntau yam tseem ceeb ntawm engineering plastics, ntev carbon saw nylon muaj qhov zoo ntawm kev nqus dej tsawg, zoo kub tsis kam, ruaj khov loj, zoo toughness, hnav-resistant shock absorption, thiab yog dav siv nyob rau hauv tsheb, kev sib txuas lus, machinery. , cov khoom siv hluav taws xob, aerospace, khoom ntaus pob tesniv thiab lwm yam haujlwm.
3. High transparency - pob tshab nylon
Cov pa nylon feem ntau yog translucent tsos, lub teeb transmittance ntawm 50% thiab 80%, thiab pob tshab nylon lub teeb transmittance feem ntau yog ntau tshaj 90%.
Pob tshab nylon tuaj yeem hloov kho los ntawm kev siv lub cev thiab tshuaj.Lub cev txoj kev yog ntxiv nucleating tus neeg sawv cev thiab txo nws cov qoob loo loj rau qhov pom qhov ntev ntawm qhov pom kom tau txais microcrystalline pob tshab nylon.Cov txheej txheem tshuaj yog ua kom paub cov monomer uas muaj cov pab pawg sab nraud lossis cov qauv nplhaib, rhuav tshem qhov tsis tu ncua ntawm cov saw hlau molecular, thiab tau txais amorphous pob tshab nylon.
Cov pob tshab nylon tuaj yeem siv rau cov dej haus thiab ntim khoom noj, tab sis kuj tuaj yeem tsim cov khoom siv kho qhov muag thiab cov khoom siv hauv computer, kev tsim khoom ntawm kev soj ntsuam Windows, X-ray ntsuas qhov rais, ntsuas ntsuas, electrostatic tshuab luam ntawv tsim tawm, tshwj xeeb teeb npog, cov tais diav thiab cov khoom noj khoom haus. .
4. Sustainability – Bio-raws liKhoom siv nylon
Tam sim no, feem ntau ntawm cov hluavtaws monomers ntawm nylon ntau yam yog los ntawm cov roj av refining txoj kev, thiab cov hluavtaws monomer ntawm bio-based cov ntaub ntawv nylon yog los ntawm cov khoom siv roj ntsha extraction, xws li Arkema los ntawm cov roj castor extraction txoj kev kom tau txais cov amino undecanoic. acid thiab ces hluavtaws nylon 11.
Piv nrog rau cov khoom siv roj-raws li nylon, cov ntaub ntawv bio-based nylon tsis tsuas yog muaj cov pa roj carbon tsawg thiab ib puag ncig zoo, tab sis kuj tuaj yeem ua tau raws li qhov sib txawv ntawm cov kev xav tau ntawm kev daws teeb meem, xws li Shandong Kaisai bio-based PA5X series, Arkema. Rilsan series hauv cov khoom siv tsheb, cov khoom siv hluav taws xob thiab 3D luam ntawv kev lag luam thiab lwm yam tau ua tiav tiav.
5.High elasticity - nylon elastomer
Nylon elastomerhais txog cov nylon ntau yam uas muaj siab resilience, lub teeb yuag thiab lwm yam ntxwv, tab sis nws yog tsim nyog hais tias cov molecular saw muaj pes tsawg leeg ntawm nylon elastomer tsis yog tag nrho cov polyamide saw ntu, thiab polyether los yog polyester saw segments, feem ntau coj mus muag ntau yam yog polyether block amide. (PEB).
Cov yam ntxwv ntawm PEBA yog lub zog tensile siab, zoo elastic rov qab, siab kub tsis tshua muaj kev cuam tshuam lub zog, zoo heev kub tsis kam, zoo heev antistatic kev ua tau zoo, thiab lwm yam., uas yog siv nyob rau hauv mountaineering khau, caij ski khau looj plab hlaub, silencing iav thiab kho mob catheters.
Post lub sij hawm: Dec-27-2023