I-Rotomolding iyindlela ekhethwayo yokukhiqiza imikhiqizo eminingi yepulasitiki eyize esetshenziswa ekuphileni kwethu kwansuku zonke, futhi empeleni ingenye yezimboni ezikhula ngokushesha embonini yepulasitiki kule minyaka eyishumi edlule.
Ngokungafani nezinye izindlela zokucubungula, izigaba zokufudumeza, ukuncibilika, ukubumba, nokupholisa kokubunjwa okujikelezayo kwenzeka ngemva kokuba i-polymer ifakwe ekubunjweni, okusho ukuthi akukho ukucindezela kwangaphandle okudingekayo ngesikhathi sokubumba.
Isikhunta ngokwaso ngokuvamile senziwe nge-aluminium ekhonjiwe, i-CNC machined aluminium, noma insimbi. Uma kuqhathaniswa nesikhunta esisetshenziswa kwezinye izindlela (njengomjovo noma ukubunjwa kokushaywa), isikhunta asibizi kakhulu.
Inqubo yokubumba ejikelezayo ilula, kodwa iguquguquka ngokwedlulele. Okokuqala, umgodi ugcwaliswa nge-polymer eyimpuphu (okuxoxwe ngayo esigabeni esilandelayo).
Ihhavini libe selibaselwa ku-300°C (572°F) kuyilapho isikhunta sizungeza ezimbazweni ezimbili ukuze kusabalalise ngokulinganayo i-polymer. Isimiso esiyisisekelo siwukuthi izinhlayiya zempushana (imvamisa ezingaba ngu-150-500 microns) zizohlangana ukuze zenze umkhiqizo ophelile oqhubekayo. Umphumela wokugcina womkhiqizo uncike kakhulu ngobukhulu bezinhlayiya ze-powder.
Ekugcineni, isikhunta sipholile futhi umkhiqizo ukhishwa ukuze uqedwe. Isikhathi somjikelezo wenqubo eyisisekelo ye-rotomolding singahluka kusuka emaminithini angu-20 kuya ku-1 ihora, kuye ngokuthi ubukhulu kanye yinkimbinkimbi yomkhiqizo.
Ngokuya ngomkhiqizo wokugcina owufunayo, izinhlobo ezahlukahlukene zama-polymers epulasitiki zingasetshenziswa ekwenzeni i-rotomolding.
Ipulasitiki eyodwa evame ukusetshenziswa yi-polyethylene (PE) ngoba ikwazi ukumelana namazinga okushisa aphezulu isikhathi eside futhi ishibhile. Ukwengeza, i-PE ye-low density flexible futhi imelana nokuqhekeka.
Abakhi besikhunta bavame ukusebenzisa i-ethylene-butyl acrylate ngoba le nto inokumelana nokuqhekeka namandla emazingeni okushisa aphansi. Njengama-thermoplastics amaningi, inenzuzo eyengeziwe yokuba lula ukuyigaya kabusha
Nakuba i-polypropylene iyipulasitiki esetshenziswa kakhulu, akuyona inketho yokuqala yabakhi abaningi bokubumba. Isizathu siwukuthi le nto iba brittle eduze kwegumbi lokushisa, ngakho abakhiqizi banesikhathi esincane sokubumba umkhiqizo.
Imikhiqizo eminingi yansuku zonke ikhiqizwa kusetshenziswa izindlela zokubumba ezijikelezayo, njengemikhiqizo eyenziwe ngokwezifiso. Ezinye izibonelo zinikezwe ngezansi:
I-Rotomolding iyindlela ephumelela kakhulu yokubumba, evumela abakhiqizi ukuthi bangagcini nje ukukhiqiza imikhiqizo ehlala isikhathi eside enezingqinamba ezincane zokuklama, kodwa futhi bakhiqize ngendlela evumelana nemvelo ngezindleko eziphansi. Ngaphezu kwalokho, imikhiqizo emikhulu ingenziwa kalula ngendlela eyongayo, ngokumoshwa okuncane kakhulu.
I-Rotomolding ingasethwa ngokushesha, engahlangabezana nezidingo ezingalindelekile futhi ikhiqize ngamaqoqo amancane. Kuyasiza ukunciphisa i-inventory kanye nokuphinda kusetshenziswe kabusha okungaba khona, kukwenze ngokuvamile kushibhile uma kuqhathaniswa nokukhiqiza, i-fiberglass, umjovo, ivacuum, noma izindlela zokubumba i-blow.
Ukuguquguquka kokubumba okujikelezayo nakho kungenye yezinzuzo zako eziyinhloko. Inika amandla imikhiqizo ukuthi idalwe ngaphandle kwemigqa ye-polymer weld, enezendlalelo eziningi nezitayela ezahlukahlukene, imibala nokuqedwa kwendawo. I-Rotomolding ayikwazi ukwamukela okufakiwe kuphela, kodwa futhi namalogo, ama-grooves, ama-nozzles, abaphathi neminye imisebenzi ukuze kuhlangatshezwane nezidingo ezidingekayo zokuklama nezobunjiniyela. Ngaphezu kwalokho, ukusebenzisa le ndlela kungakha izinhlobo ezahlukene zemikhiqizo ndawonye emshinini owodwa.
U-Gary uphothule eNyuvesi yaseManchester ngeziqu ze-honours zesigaba sokuqala ku-geochemistry kanye neziqu ze-master in geoscience. Ngemva kokusebenza embonini yezimayini yase-Australia, uGary wanquma ukulengisa amabhuzu akhe e-geology futhi aqale ukubhala esikhundleni salokho. Lapho engathuthukisi okuqukethwe kwezihloko kanye nolwazi, ngokuvamile ungabona u-Gary edlala isiginci sakhe asithandayo, noma ubukele i-Aston Villa Football Club iwina futhi ihlulwa.
I-Rotating Process Machines, Inc. (Meyi 7, 2019). I-Rotomolding ekukhiqizeni ipulasitiki-izindlela, izinzuzo kanye nokusetshenziswa. AZoM. Kubuyiswe kusukela ku-https://www.azom.com/article.aspx?ArticleID=8522 ngo-December 10, 2021.
I-Rotating Process Machines, Inc. "Ukubumba Okuzungezayo ku-Plastics Production-Izindlela, Izinzuzo kanye Nezicelo". AZoM. Disemba 10, 2021.
I-Rotating Process Machines, Inc. "Ukubumba Okuzungezayo ku-Plastics Production-Izindlela, Izinzuzo kanye Nezicelo". AZoM. https://www.azom.com/article.aspx?ArticleID=8522. (Kufinyelelwe ngoDisemba 10, 2021).
I-Rotating Process Machines, Inc. 2019. Ukubumba okujikelezayo ezindleleni zokukhiqiza zepulasitiki, izinzuzo nokusetshenziswa. I-AZoM, ibukwe ngoDisemba 10, 2021, https://www.azom.com/article.aspx?ArticleID=8522.
Kule ngxoxo, uDkt.-Ing. U-Tobias Gustmann unikeze ukuqonda okusebenzayo mayelana nezinselele zocwaningo lokukhiqiza izithasiselo zensimbi.
I-AZoM kanye noProfesa Guihua Yu weNyuvesi yaseTexas e-Austin baxoxa ngohlobo olusha lweshidi le-hydrogel elingaguqula ngokushesha amanzi angcolile abe amanzi ahlanzekile okuphuza. Le nqubo yenoveli ingase ibe nomthelela omkhulu ekwehliseni ukushoda kwamanzi emhlabeni jikelele.
Kule ngxoxo, i-AZoM noJurgen Schawe abavela ku-METTLER TOLEDO bakhulume ngokuskena okusheshayo kwe-chip calorimetry kanye nezinhlelo zokusebenza zayo ezihlukahlukene.
Amathuluzi okuhlola i-MicroProf® DI optical surface yezinhlelo zokusebenza ze-semiconductor angahlola amawafa ahlelekile futhi angahlelekile kuyo yonke inqubo yokukhiqiza.
I-StructureScan Mini XT iyithuluzi eliphelele lokuskena ukhonkolo; ingakwazi ukubona ngokunembile nangokushesha ukujula kanye nendawo yezinto zensimbi nezingezona ezensimbi kukhonkolo.
I-Miniflex XpC iyi-X-ray diffractometer (XRD) eyakhelwe ukulawula ikhwalithi ezitshalweni zikasimende nokunye ukusebenza okudinga ukulawulwa kwenqubo ye-inthanethi (njengemithi namabhethri).
Ucwaningo olusha e-China Physics Letters luphenye i-superconductivity kanye namaza okuminyana kweshaja ezintweni ezinongqimba olulodwa ezitshalwe kuma-graphene substrates.
Lesi sihloko sizohlola indlela entsha eyenza kube nokwenzeka ukuklama ama-nanomaterials ngokunemba okungaphansi kuka-10 nm.
Lesi sihloko sibika ngokulungiswa kwama-BCNT okwenziwa nge-catalytic thermal chemical vapor deposition (CVD), okuholela ekudlulisweni kweshaja okusheshayo phakathi kwe-electrode ne-electrolyte.
Isikhathi sokuthumela: Dec-10-2021