PAB 6
PA6 hlau qws yog ib tug semi crystalline thermoplastic polymer, uas yog ib qho ntawm feem ntau siv nylon nyob rau hauv lub ntiaj teb no. Lub melting point ntawm PA6 yog 220 degree, uas tuaj yeem ua tiav los ntawm ntau cov txheej txheem ib txwm ua, thiab vim nws qhov kev ua tau zoo thiab tus nqi sib piv, nws tau siv dav hauv ntau yam. Nyob rau hauv xyoo tas los no, nws tau maj mam ua nrov hauv kev lag luam 3D luam ntawv. Piv nrog cov qauv yas xws li PLA lossis ABS, PA6 yog cov khoom siv nyuaj dua rau 3D luam ntawv. Nws qhov kub thiab txias ua haujlwm yog 250-270 degree C, yog li nws yog ib qho tsim nyog los xyuas kom meej qhov chaw ua haujlwm tsim nyog kom nws tsis ntsws.
PA6 yog tsim los ntawm lub nplhaib qhib polymerization, uas yog ib qho ntawm cov txheej txheem hluavtaws ntawm ntau cov polymers. Qhov no ua rau nws tshwj xeeb ntawm kev sib piv ntawm condensation (tag nrho cov monomer molecule ua ib feem ntawm cov polymer) thiab ntxiv (cov monomer molecule poob ib feem thaum nws dhau los ua ib feem ntawm cov polymer). Thaum txheeb xyuas qhov cuam tshuam ib puag ncig ntawm polyamide 6 thiab txhim kho rau cov khoom siv ruaj khov dua, ob qho tseem ceeb yuav tsum tau xav txog. Ua ntej, cov txheej txheem tsim khoom siv kom tau txais cov khoom siv, ua raws li cov khoom siv raw nrog rau cov txheej txheem hloov dua siab tshiab; Ob leeg yuav txiav txim siab cov pa roj carbon hneev taw ntawm polyamide no.
PA11 thiab PA12
Hauv chemistry, PA11 thiab PA12 zoo sib xws, lawv tsuas yog txawv ntawm ib qho atom ntawm cov saw tseem ceeb. Txawm li cas los xij, lub atom no ua rau muaj qhov sib txawv loj hauv txoj kev uas cov polymer tau teeb tsa. PA11 yog ib qho semi crystalline biobased polymer, uas yog, nws yog tsim los ntawm cov khoom siv txuas ntxiv los ntawm cov nroj tsuag derivatives, feem ntau cov roj castor. Nws yog tsuas yog siv rau qhov zoo tshuaj tiv thaiv, yoog raws, tsis tshua muaj permeability thiab seem stability.
PA12 yog cov hmoov hluavtaws zoo, uas feem ntau muab rho tawm los ntawm roj av. Nws cov yam ntxwv tseem ceeb yog muab los ntawm cov qauv tshuaj ntawm polyamide nws tus kheej thiab cov additives lossis fibers ntxiv rau cov khoom xyaw. Nws cov yam ntxwv tseem ceeb tshaj plaws yog kev ua haujlwm siab rau cov tshuaj lom neeg, ib puag ncig thiab kev cuam tshuam, kev nqus dej tsawg, kev ua haujlwm siab, thiab thaum kawg zoo hnav tsis kam thiab zawv zawg tsis kam. Hauv nws cov ntawv thov tseem ceeb, cov yas no yog siv hauv kev lag luam siab heev, xws li tsheb lossis aviation.
Txhawm rau kom paub txog kev tiv thaiv ib puag ncig, fisap S3 tuam txhab tsim cov nylon PA11 HP raws li cov khoom siv roj ntsha. "Peb PA11 HP yog tsim los ntawm 100 feem pua txheej txheem biomass peev txheej. Peb muab cov noob Castor los ntawm cov nroj tsuag castor thiab tig mus rau hauv cov roj. Tom qab ntawd, cov roj hloov mus rau hauv monomer (11 aminoundecanoic acid) thiab thaum kawg polymerized rau PA11 HP. siv los hloov PA11 thiab PA12. Nuno Neves, tus thawj coj tsim qauv, tau hais.
Thaum xub thawj siab ib muag, lom nylon yog ib puag ncig zoo dua li roj av raws nylon, tab sis Nevis tau hais tias: "kom txiav txim siab seb cov nylon lom neeg puas muaj txiaj ntsig zoo rau ib puag ncig dua li cov nylon tsoos, peb yuav tsum xav txog ntau yam hauv tag nrho lub neej voj voog ntawm ob. hom nylon, suav nrog kev tsim khoom, tso pa tawm hauv tsev cog khoom thiab rov ua dua tshiab.
Zoo li lwm cov khoom siv hluavtaws, nylon tsis yog cov khoom siv uas tuaj yeem ua rau ib puag ncig. Yog li ntawd, txoj hauv kev zoo tshaj plaws los daws cov yas yog rov siv dua thiab hloov nws. Txawm li cas los xij, tam sim no, ntau lub nroog tsis muaj cov cuab yeej siv los cuam tshuam nrog bioplastics, xws li PA11, uas ua rau nws nyuaj rau kev siv bioplastics tam sim no. Xav tias bioplastics tuaj yeem degrade, feem ntau bioplastics thaum kawg tau muab pov tseg thiab tsim methane. Lub tsev xog paj no muaj 23 npaug ntau dua li cov pa roj carbon dioxide, uas yuav ua rau ozone depletion ntau dua li cov yas yas.
Hauv kev lag luam 3D luam ntawv, SLS 3D luam ntawv muaj qhov txiaj ntsig tseem ceeb. Tsis tas yuav muaj kev txhawb nqa ntxiv thaum luam ntawv. Cov hmoov nyob ib ncig ntawm cov khoom tuaj yeem ua lub luag haujlwm txhawb nqa, thiab txog li 70 feem pua ntawm cov hmoov tsis muaj hmoov nplej tuaj yeem rov qab siv rau yav tom ntej luam ntawv. Nws txuag cov ntaub ntawv ntau dua li txheej txheem FDM.
Nws yog qhov pom tseeb tias tag nrho cov ntaub ntawv siv hauv kev tsim khoom yuav muaj qee yam cuam tshuam rau ib puag ncig, txawm tias los ntawm emission ntawm gases los yog recyclability ntawm cov khoom. Nyob rau hauv lub sij hawm ntev, bio-based nylon yuav ua rau ib puag ncig zoo dua li roj av raws nylon.