Kwayedza pane zvivakwa zve 3D kudhinda dhiri ne hydroxypropyl methylcellose

1.1Zvishandiso zvakagadzirwa

SEMENT ANOGONESA P · 52.5 CEMENT (PC) neNanjing PoMeny Comment Spineslose, 0.05%, 0,10%, 0.20%, 0.30%, zvichiteerana; Iyo yakanaka Aggregate izhaka yekota ine size yehukuru hwe1212 ~ 0.425 mm.

1.2muedzo nzira

1.2.1Kugadzirira Kwenyama

Uchishandisa musanganiswa weMuenzaniso weMuenzaniso JJ-5, Chekutanga Sanganisa HPMC, SEENT NEGELLE SEATLY, Sanganisa YEMAHARA YEMADZIMAI), uye bvunzo yekuita inoitwa nekukurumidza mushure mekusanganisa.

1.2.2Anodhinda Performance Kuongororwa

Kudhindwa kwemutya kunonyanya kuzivikanwa nekuwedzera uye kusungwa.

Kuparadzanisa kwakanaka ndiko kweruzivo rwekuziva 3D kudhinda, uye duri rinodikanwa kuti rive nyoro uye kusavhara pombi panguva yekuwedzera. Kuendesa zvinodiwa. Achitaura nezveGB / T 2419-2005 "Kutsunga kwekutsvedza kweiyo SPENT MOTO", iyo Fleidity yeMutya rakasiiwa rakamira

Kubata kwakanaka ndiko kiyi yekuziva kudhinda 3D Izvo zvinodikanwa kuti dura rakadhindwa haridurwe kana kuremara zvakanyanya pasi pehuremu hwayo uye nekumanikidzwa kweiyo yepamusoro. Chimiro chetention chengeta uye kuparara kwekuparadzira pasi pehuremu hwayo kunogona kushandiswa kusanzwisisana nehuremu hwekutora kwe3D kudhinda.

Chimiro chetention chichava pasi pehuremu hwayo chinoratidza huwandu hwekusvibisa chezvinyorwa pasi pehuremu hwayo, chinogona kushandiswa kuongorora mashandiro e3D ekudhinda ekudhinda. Iyo yakakwira chimiro chengetedza chiyero, zvidiki kusvibiswa kwemutema pasi pehuremu hwayo, izvo zvinonyanya kubudikidza kudhinda. Reference, isa dhaka mune cylindrical kuumbwa uye kukwirira kwemamita zana, gondohwe uye simudza kumusoro kwechigadzirwa kuti uwedzere kubereka, uye muzana zvaro nekukwirisa kwekutanga ndeyekutanga chimiro chacho. Nzira iri pamusoro yakanga ichishandiswa kuyedza iyo chimiro chengetedza huwandu hwerara mushure mekumira kwe 0, 20, 40, uye 60 min zvichiteerana.

Mitezo ye3D yekudhinda inodhinda yakanangana nekumisikidza nekuomarara kwezvinhu pachayo, saka nzira yekuparadza yeiyo, saka maitiro ekuvakira ekusimudzira kana maitiro ekuvaka emisangano panguva yekugadzirisa, kuitira kuti zviite zvisina kujairika. Tarisa kuJGJ 70 - 2009 "nzira yekuyedza kwekutanga kwekuita mucheche" kuyedza kuparara kuparara kwemutumbi.

Mukuwedzera, prantry furtmter yakashandiswa kuendesa uye kudhinda rondedzero yeimwe-layer cube nehurefu hwekudhinda kwemazana mazana maviri, uye upamhi hwenzvimbo yepamusoro, uye upamhi hwemucheto hwepasi hwakaidzwa. Iyo yekudhinda layer gobvu ndeye 8 mm, uye iyo printer kufamba kumhanya ndeye 1 500 mm / min.

1.2.3Rheological genlology kuongororwa

Iyo rheological paramende yakakosha ongororo yeratidziro yekuita shanduko uye kushanda kweiyo slurry, iyo inogona kushandiswa kufanotaura maitiro ekuyerera e3D yekudhinda simbe. Iyo yekuona inooneka inoratidza kupokana kwemukati pakati pezvikamu zviri mumatare uye kunogona kuongorora kuramba kweiyo slurry kune deformation kuyerera. Iko kugona kweHPMC kuratidza mhedzisiro yeHPMC pane yekuwedzera kwe3D kudhinda kudhinda. REAITIDZE KUTI UVELIO RATIO MUKADZI 2 KUGADZIRA CEMEN PASTE P-H0, P-H0.30, Shandisa Brookfield Dvnext Viscometer neAdapta kuti vaedze zvivakwa zvacho. Iyo yekuedza nharaunda tembiricha ndeye (20 ± 2) ° C. Iyo yakachena slurry is pre-yakajekeswa kwe10.0 S-1 yekuita kuti slurry yakagoverwa, uyezve iyo sheera inowedzera kubva ku0,4 kusvika 60.

Iyo Bingham modhi inoratidzwa muEQ. (1.

τ = τ0 + μγ (1).

Kushushikana kupi; τ0 kushushikana kwekubereka; μ ndiyo plastiki viscasity; γ ndiyo ruva.

Kana iyo SEMENT-BASA REMAKARA MUTSVENE, iyo PLUCATIME μ inomiririra degree rekunetseka kweiyo cogsidal system kutadza, uye kushushikana kwechibereko Zvinyorwa zvinongoyerera chete apo kushushikana kweshekisi kupfuura kupfuura

1.2.4Muchina Muedzo wezvivakwa

Achitaura nezveGB / T 176719991

Iko hakuna yakakodzera mwero weiyo bvunzo nzira yekubatanidza simba pakati pezvikamu zvezvikamu zve 3D kudhinda mucheche. Muchidzidzo ichi, nzira yekuparadzanisa yakashandiswa bvunzo. Iyo 3D inodhinda mertar fungidziro yakarapwa ye 28 d, wobva wagura kuita zvikamu zvitatu, anonzi A, B, c. , sezvakaratidzwa mumufananidzo 2 (a). Iyo CMT-4204 Universal Testing Machine (Range Machine (Rudzi rwezasi 1, Kubhadhara Rate 0.08 MM

Iyo Interlomar Bond Simba PB yeiyo fungidziro inoverengerwa zvichienderana neye inotevera formula:

PB = 2FπA = 0.637 FA (2)

Iko F ndiko kutadza kutakura kweiyo fungidziro; A inzvimbo yekuparadzaniswa kwepamusoro yeiyo fungidziro.

1.2.5Microrphology

Iyo microscopic morphology yemifananidzo pa3 d yakaonekwa neQuQua 200 Scanning Electron Microscope (SEM) kubva kuFE Company, USA.