Site n'ịmụ mmetụta nke dị iche iche dosages nke hydroxypropyl methylcellulose (HPMC) na printability, rheological Njirimara na n'ibu Njirimara nke 3D ngwa ngwa obibi akwụkwọ, a tụlere usoro kwesịrị ekwesị nke HPMC, na-enyocha usoro mmetụta ya jikọtara ya na microscopic morphology. Nsonaazụ na-egosi na mmiri mmiri nke ngwa agha na-ebelata na mmụba nke ọdịnaya nke HPMC, ya bụ extrudability na-ebelata na mmụba nke ọdịnaya nke HPMC, mana ikike njide mmiri na-akawanye mma. Extrudability; udi njide ọnụego na penetration eguzogide n'okpuru onwe ibu-abawanye budata na-abawanye nke HPMC ọdịnaya, ya bụ, na-abawanye nke HPMC ọdịnaya, stackability mma na-ebi akwụkwọ oge na-agbatịkwu; site n'echiche nke rheology, na Site na mmụba nke ọdịnaya nke HPMC, viscosity pụtara ìhè, mkpụrụ nrụgide na plastic viscosity nke slurry mụbara nke ukwuu, na stackability mma; thixotropy mbụ mụbara wee belata site na mmụba nke ọdịnaya nke HPMC, na mbipụta ahụ ka mma; ọdịnaya nke HPMC mụbara Oke elu ga-eme ka porosity ngwa agha na-abawanye na ike A na-atụ aro na ọdịnaya nke HPMC ekwesịghị gafere 0.20%.
N'ime afọ ndị na-adịbeghị anya, mbipụta 3D (nke a makwaara dị ka "ichepụta ihe mgbakwunye") etolitela ngwa ngwa ma jiri ya mee ihe n'ọtụtụ ebe dị ka bioengineering, ikuku ikuku, na ihe okike. Usoro na-enweghị ebu nke teknụzụ obibi 3D emeela ka ihe dịkwuo mma yana Mgbanwe nke nhazi nhazi na usoro ihe owuwu ya na-akpaghị aka ọ bụghị nanị na-azọpụta ike mmadụ, kamakwa ọ dabara adaba maka ọrụ owuwu na gburugburu ebe dị egwu. Nchikota nke teknụzụ obibi akwụkwọ 3D na ebe a na-ewu ụlọ bụ ihe ọhụrụ na-ekwe nkwa. Ka ọ dị ugbu a, ihe ndị sitere na ciment 3D Usoro nnochite anya nke mbipụta bụ usoro nchịkọta extrusion (gụnyere usoro nhazi contour crafting) na usoro obibi akwụkwọ na ntụ ntụ (usoro D-ụdị). N'etiti ha, extrusion stacking usoro nwere uru nke obere dị iche iche si omenala ihe ịkpụzi usoro, elu feasibility nke nnukwu-size components na-ewu na-akwụ ụgwọ. Uru dị ala aghọwo ebe nyocha ugbu a nke teknụzụ mbipụta 3D nke ihe ndị sitere na ciment.
Maka ihe ndị sitere na ciment na-eji dị ka "ihe ink" maka mbipụta 3D, ihe ha chọrọ ịrụ ọrụ dị iche na nke ihe eji eme ciment n'ozuzu: n'otu aka ahụ, e nwere ihe ụfọdụ a chọrọ maka ịrụ ọrụ nke ihe ndị na-emepụta ciment a gwakọtara ọhụrụ, na usoro ihe owuwu ahụ kwesịrị izute ihe ndị a chọrọ maka extrusion dị nro, N'aka nke ọzọ, ihe ndị na-emepụta simenti na-eme ka ọ dị mkpa ka a na-edozi ya, ya bụ, ọ gaghị adaba ma ọ bụ gbanwee nke ọma n'okpuru omume nke ibu ya na nrụgide nke elu oyi akwa. Tụkwasị na nke ahụ, usoro lamination nke mbipụta 3D na-eme ka akwa dị n'etiti ọkwa dị iche iche iji hụ na ihe eji arụ ọrụ dị mma nke mpaghara interlayer interface, ihe ụlọ obibi 3D kwesịrị inwe ezigbo adhesion. Na nchịkọta, a na-emepụta atụmatụ nke extrudability, stackability, na akwa adhesion n'otu oge ahụ. Ihe eji eme ciment bụ otu n'ime ihe achọrọ maka itinye teknụzụ obibi akwụkwọ 3D n'ihe owuwu ụlọ. Idozi usoro hydration na akụrụngwa rheological nke ihe cimentious bụ ụzọ abụọ dị mkpa iji melite arụmọrụ mbipụta n'elu. Ndozi usoro hydration nke ihe cimenti siri ike mejuputa ya, ọ dịkwa mfe ịkpata nsogbu dịka nkwụsị nke ọkpọkọ; na ụkpụrụ nke ihe ndị na-emepụta ihe kwesịrị ịnọgide na-enwe mmiri mmiri n'oge usoro obibi akwụkwọ na nhazi ngwa ngwa mgbe a na-akpụzi extrusion. Na nyocha nke ugbu a, a na-ejikarị viscosity modifiers, mineral admixtures, nanoclays, wdg. ihe iji nweta arụmọrụ obibi akwụkwọ ka mma.
Hydroxypropyl methylcellulose (HPMC) bụ ihe na-ejupụta polymer. Enwere ike ijikọ hydroxyl na ether bond na molecular yinye na mmiri efu site na njikọ hydrogen. Ewebata ya n'ime ihe nwere ike imezi njikọ ya nke ọma. na njide mmiri. Ka ọ dị ugbu a, nchọpụta banyere mmetụta nke HPMC na ihe ndị dị na ciment na-elekwasị anya na mmetụta ya na mmiri mmiri, njide mmiri, na rheology, na obere nnyocha e mere na ihe onwunwe nke 3D na-ebipụta ciment. dị ka extrudability, stackability, wdg). Tụkwasị na nke ahụ, n'ihi enweghị ụkpụrụ otu maka mbipụta 3D, usoro nyocha maka ibipụta ihe ndị dabeere na ciment ka emebebeghị. A na-enyocha stackability nke ihe onwunwe site na ọnụ ọgụgụ nke ọkwa ndị a na-ebipụta nwere nrụrụ dị ịrịba ama ma ọ bụ elu mbipụta kacha elu. Ụzọ nyocha ndị a dị n'elu bụ isiokwu dị elu, ọdịdị ụwa na-adịghị mma, na usoro dị egwu. Usoro nleba anya arụmọrụ nwere nnukwu ikike na uru na ngwa injinia.
N'ime akwụkwọ a, a na-ewebata usoro ọgwụgwọ HPMC dị iche iche n'ime ihe ndị sitere na ciment iji meziwanye nbibi nke ngwa agha, na mmetụta nke usoro ọgwụgwọ HPMC na ihe eji ebi akwụkwọ 3D ka a tụlere n'ụzọ zuru ezu site n'ịmụ akwụkwọ, rheological Properties and mechanical Properties. Dabere na akụrụngwa dị ka fluidity Dabere na nsonaazụ nyocha, a na-ahọrọ ngwa agha ahụ na oke kacha mma nke HPMC maka nkwenye ibipụta, a nwalekwara paramita dị mkpa nke ụlọ obibi ebipụtara; dabere na nyocha nke ihe omimi nke microscopic nke ihe atụ, a na-enyocha usoro n'ime ime evolushọn nke ihe eji ebi akwụkwọ. N'otu oge ahụ, e guzobere 3D na-ebi akwụkwọ simenti. Usoro nleba anya zuru oke nke ịrụ ọrụ a na-ebipụta iji kwalite ngwa nke teknụzụ obibi akwụkwọ 3D n'ọhịa ihe owuwu.
Oge nzipu: Sep-27-2022