Babban zafin jiki na polystrackic acid (PLA) yana ɗaya daga cikin robobi mafi lalacewa waɗanda suka fi lalacewa don bincike da aikace-aikace.Danyen kayan sa sun fito ne daga filayen tsire-tsire masu sabuntawa, masara, kayan aikin noma, da sauransu, waɗanda ke da kyakkyawan yanayin halitta.PLA yana da kyawawan kaddarorin inji kuma yayi kama da filastik polypropylene.Yana iya maye gurbin PP da PET filastik a wasu filayen.A lokaci guda, yana da kyau mai sheki, nuna gaskiya, ji, da wasu bacteriostatic.
1. Matsayin samarwa na babban zafin jiki na polystraphin PLA
A halin yanzu, akwai nau'ikan hanyoyin haɗin PLA iri biyu.Daya shine hanyar tara kai tsaye.Lactic acid yana gab da cire ruwa kuma ya ragu a babban zafin jiki da ƙananan matsi.Tsarin samarwa yana da sauƙi kuma farashin yana da ƙasa, amma ingancin kwayoyin samfurin ba daidai ba ne kuma ainihin tasirin aikace-aikacen ba shi da kyau.Ɗayan shine cewa propylecly polymerization na Cyrne doka ne, wanda shine hanyar samar da kayan aiki na yau da kullum.Takamammen tsari shine kamar haka.
PLA doka ce, tare da ingantaccen samarwa, ingancin samfur mai kyau, da tsada mai tsada.
2. Rashin lalata na babban zafin jiki na polystraphin PLA
PLA ya fi tsayayye a zafin daki, amma yana da sauƙi a hanzarta ƙasƙantar da CO2 da ruwa a cikin yanayin zafi mafi girma, acid zuwa ƙoƙon zobe na ma'aikatar, da yanayin ƙananan ƙwayoyin cuta.Don haka, ana iya amfani da samfuran PLA don amfani da mahalli da filaye don a yi amfani da su cikin aminci yayin lokacin inganci, kuma ana iya lalata shi a lokaci ɗaya bayan watsi.
Abubuwan da ke shafar lalatawar PLA sun haɗa da ingancin kwayoyin halitta, yanayin crystalline, tsarin micro, zafin muhalli da zafi, ƙimar pH, lokacin haske da ƙananan ƙwayoyin cuta.
PLA da sauran kayan suna haɗe tare da wasu kayan da zasu iya rinjayar saurin lalacewa.Misali, PLA tana ƙara wani adadin foda na katako ko bambaro masara da fiber don haɓaka ƙimar lalacewa sosai.
3. juriya ga high zafin jiki polystrackic acid PLA
Toshewa yana nufin ikon hana iskar gas da tururin ruwa ta cikin kayan.Rarraba kayan toshewa yana da matukar mahimmanci don kayan tattarawa.A halin yanzu, mafi yawan yankan jakar filastik a kasuwa shine kayan hada kayan Plapbat.Juriya na fim din PLA na iya fadada filin aikace-aikacen.
Abubuwan da ke shafar toshewar PLA sun haɗa da abubuwan nasu (tsarin kwayoyin halitta da yanayin crystalline) da abubuwan waje (zazzabi, zafi, ƙarfin waje).
1. Dumama fim din PLA zai rage toshe shi, don haka PLA bai dace da kayan abinci ba a matsayin abincin da ake buƙatar zafi.
2 mikewa PLA tsakanin kewayon na iya ƙara juriya.Lokacin da ma'auni mai ƙarfi ya karu daga 1 zuwa 6.5, an inganta crystallization na PLA sosai, don haka an inganta toshewa.
3. Ƙara wasu toshewa (kamar yumbu da fiber) zuwa ma'auni na PLA na iya inganta toshewar PLA.Wannan shi ne saboda toshe hanyar lankwasawa na ruwa ko iskar gas na ƙananan ƙwayoyin cuta.
4. Pailoring jiyya a kan fuskar fim din PLA zai iya inganta juriya.
4. Aikin injiniya na PLA
PLA yana da ƙarfi mai kyau.Kayan aikin injiniya suna kama da PP, amma rashin ƙarfi yana da sauƙi don lanƙwasa da lalacewa, kuma yawanci yana buƙatar ƙarfafawa da gyarawa.Don tabbatar da haɓakar biodegradability na PLA, PLA da sauran ayyukan filastik galibi ana haɗe su da guduro mai iya lalacewa.PBAT, PBS, PCL, roba na halitta da sauran abubuwa na iya inganta taurin PLA.
5. Aikin gani na PLA
PLA yana da bayyananniyar bayyananniyar bayyananniyar haske da kyalli na sauran filastik masu lalata, wanda yayi daidai da takarda gilashi da PET, musamman dacewa don amfani (marufi na gani, tasirin ado mai kyau. Gabaɗaya, nuna gaskiya da haske na PLA baya buƙatar haɓakawa. A lura cewa sauran a cikin sauran yana cikin wasu.Kada ku rage kyakkyawan bayyanar da kyau gwargwadon iyawa don tabbatar da ganin marufi da tasirin ado.
Akwatin marufi na PLA
6. Ayyukan thermal na PLA
Tsawon yanayin zafi na kayan PLA daidai yake da PVC, amma ƙasa da PP, PE da PS.The aiki zafin jiki ne kullum sarrafawa tsakanin 170 ~ 230 ° C. Ya dace da allura, mikewa, extrusion, hurawa, 3D duka, da dai sauransu Essence
Farashin PLA
A cikin ainihin aiki, ƙimar crystallization PLA yana jinkirin kuma gabaɗaya yana buƙatar gyara.Saboda jinkirin da ƙarancin crystallization rate, zafi nakasar zafin jiki na PLA yana da ƙasa, wanda ke iyakance aikace-aikacen sa akan marufi na zafi -cike ko samfuran haifuwa na thermal.
Domin inganta ƙimar lu'ulu'u na PIA da crystallinity, ana iya inganta tsaftar gani na PLA gwargwadon yiwuwa yayin samarwa.Maganin antuction kuma hanya ce ta inganta crystallinity PA.Bugu da ƙari, ana iya ƙara shi tare da jami'an nukiliya don inganta halayen crystallization, inganta crystallinity, don haka inganta yanayin yanayin zafi, da inganta yanayin zafi.
Babban zafin jiki 3D bugu PLA
7. PLA's antibacterial aikin
PLA na iya samar da yanayi mai rauni na acid a saman samfurin, wanda ke da tasirin bacteriostatic da mildew.Idan an yi amfani da wakili na maganin rigakafi don isa fiye da 90% na adadin ƙwayoyin cuta, ana iya amfani dashi don marufi na samfurin.
PLA zuciya da jijiyoyin jini stent, antibacterial PLA ana amfani da sau da yawa a cikin likita filin
Abubuwan da aka saba amfani da su na ƙwayoyin cuta na inorganic sun fi azurfa, jan karfe, zinc da sauran karafa.Kwayoyin Hango na kwayoyin halitta da aka saba amfani da su sun haɗa da mahallin samuwar vanadal ko ethyl vanadal.Ana buƙatar nazarin lafiyar abinci na sauran magungunan kashe kwayoyin cuta.Gabaɗaya kwayoyin halitta wakili na ƙwayoyin cuta ba shi da kyau kuma lokacin inganci gajere ne.
8. Ayyukan lantarki na PLA
PLA na iya shirya ɓangarorin ɗabi'a irin su carbon baki (CB), carbon nanotubes (CNTS), fiber carbon (CFS), ko ringne na dutse.Ana amfani da kayan haɗaɗɗun kayan aikin polymer a ko'ina a cikin filastik anti-static, kayan kariya na lantarki na lantarki, zafin zafin jiki na sarrafa kai - kayan thermal, ingantattun kayan ingancin zafin jiki, da na'urori masu kula da muhalli.
CPCS, wanda ya dogara akan PLA, kuma yana da lalacewa da daidaituwa.Ana iya amfani da shi don marufi na musamman na anti-static, marufi na garkuwar lantarki, da marufi na hankali.Misali, ana iya amfani da polymer mai sarrafa tushe na PLA don gas ko na'urori masu auna ruwa don gano bayanan ingancin abinci.
Lokacin aikawa: Oktoba-08-2022