Uvavanyo kwiipropathi zodaka lwe-3D oluPhezulu lwe-Hydroxypropyl Methylcelcelce

1.1iimpahla ezingekasilwa

Isamente yamkela i-PATION 52.5 I-CATION (PC) I-ENJJE CATE STAT, i-Hydroxypropyl Methylcelcelgalose, i-White Powdeous, i-25 yexabiso le-ART. I-0.05%, i-0.10%, i-0.20%, i-0.30%, ngokulandelelana; I-Aggregate entle ye-quartz i-quartz isandre ye-0.212 ~ 0.425 mm.

1.2Indlela yovavanyo

1.2.1Ukulungiselela izinto

Sebenzisa umxube wemodeli ye-JJ-5, okokuqala xuba i-HPMC, isamente kunye nesanti kunye nokuxuba ngesantya esiphezulu), kwaye uvavanyo lwentsebenzo luqhutywa ngokukhawuleza emva kokuxuba.

1.2.2Uvavanyo lweNtsebenzo ePrintayo

Ushicilelo lodaka lubonakaliswa ikakhulu kukuphuculwa kunye nokubekwa.

Ukuqhubela phambili sisiseko sokuqonda ukuprinta oku-3d, kwaye udaka kufuneka lubetheke kwaye ungabuthinteli umbhobho ngexesha lenkqubo yokuphumelela. Iimfuno zokuhambisa. Ibhekisa kwi-GB / T 2419-2005 "Ukuzimisela kwe-Femidity yodaka lwesamente", ubuqhophololo wodaka olushiyekileyo luye kuma-0, 20, 40, ne-60 min yavavanywa ngovavanyo lwetafile.

Isitayile esihle sisitshixo sokuqonda i-3D printa. Kuyafuneka ukuba umaleko oshicilelweyo akawanga okanye aphembelele phantsi kobunzima bayo kunye noxinzelelo lomaleko ophezulu. Ireyithi yokugcina izilwanyana kunye nokunganyangeki kweTy

Iqondo lokugcina imilo phantsi kobunzima bayo libonisa inqanaba lezinto ezisisiseko phantsi kwesisindo esiphantsi kwesisindo sayo, ezinokusetyenziselwa ukuvavanya ukuprinta izinto ze-3D. Ukuphakama kwenqanaba lokugcina imilo, incinci ilahleko yodaka phantsi kobunzima bayo, okokongaphezulu kokuprinta. Isalathiso, sibeke udaka kwi-cylindricrical ye-cylindricrical ye-seameter kunye nokuphakama kwe-100 mm, i-RAM kwaye iphakamise umbungu wokuvavanya umgangatho wokugcinwa komgangatho. Le ndlela ingentla yayisetyenziselwa ukuvavanya inqanaba lokugcina izilwanyana zodaka lodaka emva kokumbona 0, 20, 40, nengama-60 ngokwahlukeneyo.

Ukuqhekeka komphumo we-3D kunxulumene ngokuthe ngqo nokuseta kunye nenkqubo yokuqalisa izinto, ukuze indlela yokunganyangeki isetyenziselwa ukufumana izinto ezilukhuni, ukuze kubonakale ngokungathanga ngqo. Jonga kwi-JGJ 70-2009 "Indlela yovavanyo yentsebenzo esisiseko yokwakha udaka" ukuvavanya ukunyangwa kwentywili.

Ukongeza, umshicileli wesakhelo se-Gantry wayedla ngokuza kuprintwa kwaye aprinte uluhlu lwe-cube ye-cube ye-200 ye-200 mm, kunye neeparamitha eziPhezulu, kunye nobubanzi bomphetho ongezantsi kwavavanywa. Ubungqingqwa bokuprinta ubukhulu buyi-8 mm, kwaye isantya sokuhamba somshicileli siyi-1 500 mm / min.

1.2.3Uvavanyo lwePropathi yePropathi

Ipharamitha ye-ROOOLOTRY yiparamitha ebalulekileyo yokuvavanya ukufaka ishwangusha kunye nokusebenza kwesilayidi, esinokusetyenziselwa ukuqikelela indlela yokuhamba kwe-3D yesamente. I-viscofity ebonakalayo ibonakalisa ukuxabana lwangaphakathi phakathi kwamasuntswana kwi-slicry kwaye kungavavanya ukuxhathisa kwe-slicry ekufumaneni ukuhamba kwengxaki. Isakhono se-HPMC ukubonisa ifuthe le-HPMC kwi-super yodaka lwe-3D. Jonga umlinganiso wokuxuba kwiTheyibhile 2 Ukulungiselela iCote Paste Paste P-H0, P-H0.20, P-H0.30, sebenzisa i-adapter i-adaptha yokuvavanya iipropathi zayo ze-rook. Imo enobushushu yendawo yovavanyo (i-20 ± 2) ° C. I-slidery ecocekileyo ihleliwe i-10 s ukuya kwi-60 s-1 ye-sl-1 ukwenza i-slurry isasazwe ngokulinganayo, kwaye emva koko inqunyulwe i-10 s, kwaye emva koko i-Sheare inyuke ukusuka kwi-0.1 s-1 kwaye emva koko inciphise kwi-0.1 S-S-S-S-1.

Imodeli ye-bingham iboniswe kwi-Eq. .

τ = τ0 + γγ (1).

apho τ luxinzelelo localucalulo; τ0 yimeko yokuziphatha gwenxa; μ luhlobo lweplastiki; γ ngumgangatho wechiza.

Xa izinto ezisekwe kwisamente zikwimeko ye-quitric, i-viscofity yeplastiki imela ubungakanani benkqubo yokungaphumeleli kwenkqubo, kunye noxinzelelo lwe-τ-τ-chano τ0 lubhekisa kubuncinci obufunekayo ukuze ahambe. Izinto ezihamba kuphela xa uxinzelelo lwe-shear liphezulu kune-τ0 lenzeka, ukuze isetyenziselwe ukubonisa impembelelo ye-HPMC kwi-STAPE YESI-3D Printa udaka lwe-3D.

1.2.4Uvavanyo lwepropathi yoomatshini

Ukubhekisa kwi-GB / T 17671-1999

Akukho mgangatho ufanelekileyo wendlela yovavanyo yamandla aphezulu phakathi kodaka lwe-3D. Kolu phononongo, indlela yokwahlulahlula yasetyenziselwa uvavanyo. I-3D iprintaring right inyangelwe nge-28 D, emva koko inqumle ibe ngama-3, igama elithi, B, C ngokwahlukeneyo. , njengoko kubonisiwe kumzobo 2 (a). I-CMT-4204 yomatshini wovavanyo lwe-CMT-4204 (Uluhlu lwe-20n, iKlasi ye-1, i-0.08 mm / min) yayisetyenziselwa ukulayisha i-Nqunulo leCandelo le-Interlather ukuya kwi-Spring Stop, njengoko kubonisiwe kumzobo 2 (b).

Amandla e-plarphamira ye-PB ye-PB ye-Specimen ibalwa ngokwefom yefomula:

Pb = 2fπ = 0.637 Fa (2)

apho f ingumthwalo osilelayo we-timemen; I-A yindawo yomgangatho owahluliweyo we-staten.

1.2.5I-micromorphology

I-microsphology ye-microscopic yemodeli ye-3 D yaqwalaselwa nge-Scan ye-SCOAS ScanORCOP (i-SEM) kwinkampani ye-feli, e-USA.