High- uburemere bw’ibintu vyinshi (HDPE), nk’ipulasitike y’ubuhinga bwa none, ikoreshwa cane mu nganda, mu kwubaka no mu vy’ubuhinga bw’imiti. Ivyiza vyayo vyiza cane vy’umubiri n’ivy’imiti be n’ibiranga ubuhinga bwo gutunganya ibintu bituma iba ikintu nyamukuru co guhitamwo mu mirima myinshi. Iki kiganiro kizodondora neza ibiranga ubuhinga bw’urubaho rwa HDPE bivanye n’imiterere y’ubuhinga, ugushikama kw’imiti, ubushobozi bwo guhagarika imihangayiko mu bidukikije, n’ugukora neza.
1.Imitunganirize nziza
Igipande ca HDPE gifise uburemere bwinshi (mu bisanzwe hagati ya 0.94-0.97 g/cm3), ivyo bikaba biguha ubukomezi bwiza cane, ubushobozi bwo guhangana n’ingaruka, n’ubushobozi bwo guhangana n’ugusha. Inkomezi zayo z’ugukomera zishika kuri 20-35 MPa, kandi inkomezi zayo z’ugukomera ni nyinshi, bigatuma ishobora kwihanganira imizigo iremereye y’ubuhinga. Ikindi kandi, uruzitiro rwa HDPE rufise urugero ruto rw’ugushikana (nk’ibice 0.05-0.1) n’imiterere myiza cane yo kwigirako, bikaba bibereye ku bikorwa bisaba ko habaho ukugabanya, nk’inzira z’uburongozi n’imikanda itwara.
2.Ubushobozi bwiza cane
Igipande ca HDPE kigaragaza ubushobozi bwiza cane bwo guhangana n’aside nyinshi, alkalis, umunyu, n’ibintu vy’ibinyabuzima, kandi ntikigira ico gikoze n’imiti yose iri mu bushuhe bwo mu cumba. Ico kibanza caratumye gikoreshwa cane mu bikorwa vy’ubuhinga bwo gusukura amazi, ibidukikije n’amazi mabi, nk’ugusenya-bashobora kwicarana n’ivyuma vy’amazi. Ariko rero, ubushobozi bwa HDPE bwo guhangana n’aside zimwe zimwe zikomeye zikoresha oxidition (nk’aside nitric na aside y’ikibiriti) buragabanuka ku bushuhe bwinshi (mu bisanzwe burengeye 60℃), rero ukwiyubara kurahanurirwa iyo ubikoresheje mu bidukikije bikomeye cane.
3. Ubushobozi bwiza cane bwo guhagarika ibikorwa vy'ibidukikije (ESCR)
Igipande ca HDPE gifise uburemere bwinshi bw’amamolekule n’uburemere bw’amabuye y’agaciro, ivyo bikaba bishoboza kuguma bifise ubushobozi bwiza cane bwo guhangana n’imizingi mbere n’igihe kirekire - igihe kirekire. Ivyo bituma bibereye ku bikorwa vyerekanwa ku muzigo w’igihe kirekire - ijambo ry’inguvu canke imibabaro y’ibidukikije, nk’uburyo bwo gukoresha amatiyo n’imirongo y’ibitoro. Ugereranije na polyetylene isanzwe, urupapuro rwa HDPE rwerekana igihe kirekire cane ESCR, rikaba ryaragutse ubuzima bwayo.
4. Uburyo bwiza bwo gukora
Igipande ca HDPE gishobora gutunganirizwa no kubumbwa hakoreshejwe uburyo butandukanye, harimwo no gukanda, gusohoka, no kubumbabumba. Ni ikintu gishobora guhinduka cane kandi gishobora gukorwa mu buryo butandukanye, ubunini n’imiterere. Ubushuhe bwayo bw’ugushonga ni nk’ibice 130-137 , bitanga uburemere bwiza cane mu gihe co gukora, kworoha gubumbabumba be n’ugushikama kw’ingero nyinshi. Ikindi, impapuro za HDPE zishobora gukoreshwa biciye mu gusudira, mu gukora imashini, no mu bundi buryo bwo gushitsa ivyo bikenewe mu bikorwa bitandukanye vyo gukoresha.
5. Ibindi bimenyetso vy'ubuhinga
1.Ukurinda: HDPE impapuro zitanga ubushobozi bwiza cane bwo guhangana n’imishwarara ya UV, ariko kwongerako umuti urwanya - ni vyiza ku bijanye n’ikoreshwa ry’inyuma - ijambo hanze kugira ngo haboneke ubushobozi bwo gukomeza.
2.Inyungu: HDPE ni ikintu ciza cane co gukingira gifise inkomezi nyinshi z’umuyagankuba, ivyo bikaba bibereye ibihimba vy’umuyagankuba.
3.Nta n'imwe mu nzira n'ibidukikije: HDPE ihuye n'ivyokurya- igabanwa n'ingingo mfatirwako kandi nta n'imwe itekanye kandi nta -
Ivyuma vya HDPE vyacitse ikintu nyamukuru mu nganda nyinshi kubera imiterere yavyo nziza cane y’ubuhinga, ugushikama kw’imiti, ukurwanya ugusaduka ku bidukikije, n’imiterere myiza cane yo gutunganya. Kubera ko ubuhinga bw’ibikoresho bwateye imbere, ibikorwa vya HDPE birabandanya gutera imbere, kandi bizogira uruhara runini mu bikorwa vyinshi muri kazoza.
