Chitoliro cha PTFE chokana kutentha kwambiri cha chosindikizira cha 3D

Kodi PTFE ndi chiyani?

PTFE yomwe imadziwika kuti "mfumu ya pulasitiki", ndi polima ya polymer yopangidwa ndi tetrafluoroethylene ngati monomer. Inapezeka ndi Dr. Roy Plunkett mu 1938. Mwina mukumvabe zachilendo ndi chinthuchi, koma kodi mukukumbukira poto yosamatira yomwe tidagwiritsa ntchito? Mpoto yosamatira imakutidwa ndi PTFE pamwamba pa poto, kotero kuti chakudya sichimamatira pansi pa poto, zomwe zimasonyeza kukana kutentha kwambiri kwa PTFE komanso makhalidwe ake opaka mafuta ambiri. Masiku ano, zinthu zopangira ufa wa PTFE zimapangidwa kukhala zinthu zamitundu yosiyanasiyana, monga machubu a PTFE, filimu yopyapyala ya PTFE, mipiringidzo ya PTFE, ndi mbale za PTFE, zomwe zimagwiritsidwa ntchito m'magawo osiyanasiyana. Kenako, tikambirana za kugwiritsa ntchito machubu a PTFE muzipangizo zosindikizira za 3D.

Kodi PTFE ndi yoopsa?

Nkhani yoti PTFE ndi poizoni ndi yotsutsana ndipo PTFE si poizoni kwenikweni.

Koma PFOA (Perfluorooctanoic Acid) itawonjezeredwa kale ku zosakaniza za PTFE, poizoniyo amatulutsidwa akagwiritsidwa ntchito kutentha kwambiri. PFOA ndi yovuta kuiwononga kuchokera ku chilengedwe, ndipo ingalowe mwa anthu ndi zamoyo zina kudzera mu zinthu zakuthupi, mpweya ndi madzi, ndipo pakapita nthawi ingayambitse kuchepa kwa kubereka ndi matenda ena a chitetezo chamthupi. Koma tsopano PFOA yaletsedwa ndi akuluakulu kuti ayiwonjezere ku zosakaniza za PTFE. Malipoti athu onse oyesera zinthu zopangira akuwonetsanso kuti palibe gawo la PFOA.

N’chifukwa chiyani ma printer a 3D amagwiritsa ntchito machubu a PTFE?

Ndi chitukuko chachangu cha The Times, chosindikizira cha 3D ndi ukadaulo wopangira zinthu mwachangu, womwe umadziwikanso kuti kupanga zowonjezera. Ndi njira yolumikizira kapena kuchiritsa zinthu motsogozedwa ndi makompyuta kuti apange zinthu zamitundu itatu, nthawi zambiri pogwiritsa ntchito mamolekyu amadzimadzi kapena tinthu ta ufa kuti tigwirizane ndikumanga zinthuzo wosanjikiza ndi wosanjikiza. Pakadali pano, ukadaulo wopangira zinthu wa 3D nthawi zambiri umaphatikizidwa: njira yosungunula zinthu, monga kugwiritsa ntchito thermoplastic, zinthu zachitsulo za crystal system, liwiro lake lopanga zinthu limachedwa, ndipo kusungunuka kwa zinthu kumakhala bwino;

Komabe, makina osindikizira a 3D ali ndi mbiri yakale ya mutu, wosavuta kuulumikiza! Ngakhale kuti kulephera kwa makina osindikizira a 3D kuli kochepa, zikachitika, sizingokhudza khalidwe losindikiza, komanso zimawononga nthawi ndi zinthu zosindikizira, komanso zimawononga makinawo. Anthu ambiri amaganiza kuti chubu cha pakhosi chinali chotentha kwambiri chifukwa chinapangidwa ndi chowonjezera. Chifukwa chakuti zipangizo zamagetsi zimafuna kutentha kosalekeza, zofunikira pazigawo zake zimakhala zapamwamba kwambiri. Chifukwa chake, makina osindikizira a 3D amagwiritsa ntchito chubu cha PTFE ngati chubu chodyetsera. Zipangizo zambiri ziyenera kunyamulidwa kupita ku mutu wa makina osindikizira pamene akusungunuka, ndipo chubu chonyamulira chiyenera kukwaniritsa zofunikira za malo a makina osindikizira, kotero tsopano opanga ambiri akusintha kupita ku chubu cha chinjoka chachitsulo cha fluorine chomangidwa mkati, chinjoka chachitsulo cha fluorine ndi kutentha kwachitsulo chosapanga dzimbiri ndizochepa, zimatha kuchepetsa kutentha kwa chubu cha pakhosi, ndi chubu cha chinjoka chachitsulo cha fluorine, kuchuluka kwa kulephera kwa makina kumachepa kwambiri. Chifukwa chake iyi ndiye chisankho chabwino kwambiri cha makina osindikizira a 3D.