I-Polyethylene yoxinzelelo oluphezulu (i-HDPE): Iipropati zeMathiriyeli kunye nezicelo
I-High-Density Polyethylene (HDPE) yipolymer ye-thermoplastic esetyenziswa ngokubanzi ethandwa ngamashishini ahlukeneyo ngenxa yeempawu zayo ezibalaseleyo zomzimba kunye nokuzinza kweekhemikhali. Kule nqaku, siya kukhangela kwiipropati ze-HDPE, inkqubo yayo yokuvelisa kunye noluhlu olubanzi lwezicelo zokunceda ukuqonda kangcono le nto ebalulekileyo.
I. Inkcazo kunye neempawu zesakhiwo se-HDPE
Uxinaniso oluphezulu lwe-polyethylene (i-HDPE) yipolymer ehambelanayo eveliswe ngokongezwa kwe-polymerisation ye-ethylene monomer. Inomgangatho ophezulu we-crystallinity kunye noxinzelelo oluphezulu (ngaphezulu kwe-0.940 g / cm³), ehambelana nenani eliphantsi lamaketane e-branched kwisakhiwo sayo se-molecular.Ilungiselelo elisondeleyo lamaketanga eemolekyuli ze-HDPE linika amandla agqwesileyo omatshini kunye nokuqina, ngelixa ligcina ukuguquguquka okuhle kunye ne-ductility.
II. IiPropati zePhysical and Chemical of HDPE
I-HDPE inoluhlu lwezinto ezibalaseleyo zomzimba kunye neekhemikhali ezenza ukuba zikhuphisane kakhulu kwizicelo zamashishini:

Ukumelana nemichiza: I-HDPE inozinzo oluphezulu phantsi kwesenzo seekhemikhali ezininzi, i-acids, i-alkalis kunye ne-solvents ye-organic, kwaye ngoko ifanelekile ukugcinwa kunye nokuthutha ulwelo olubi.
Amandla aphezulu kunye nokuchasana kwempembelelo: Ubunzima bayo obuphezulu bemolekyuli bunika i-HDPE amandla agqwesileyo okuqina kunye nokumelana nempembelelo, ngoko ihlala isetyenziselwa ukwenza imibhobho, izikhongozeli kunye nezinto zokupakisha.
Ukufunxwa kwamanzi asezantsi kunye nokugquma okulungileyo: I-HDPE inokufunxeka kwamanzi aphantsi kakhulu kunye neempawu ezigqwesileyo zokugquma umbane, iyenza ilungele ukushela intambo kunye nokugquma.
Ukumelana nobushushu: inokugcina uzinzo lweempawu zomzimba kuluhlu lobushushu obuphakathi -40 ℃ ukuya kuma-80 ℃.

Okwesithathu, inkqubo yokuvelisa i-polyethylene ephezulu
I-HDPE iveliswa ikakhulu ngeendlela ezintathu zepolymerisation: indlela yesigaba segesi, indlela yesisombululo kunye nendlela yokumiswa. Umahluko phakathi kwezi ndlela ulele kumahluko phakathi kwendlela yokusabela kunye neemeko zokusebenza:

Indlela yesigaba segesi: nge-polymerising igesi ye-ethylene ngokuthe ngqo phantsi kwesenzo se-catalyst, le ndlela inexabiso eliphantsi kunye nokusebenza okuphezulu, kwaye okwangoku yinkqubo esetyenziswa kakhulu.
Indlela yesisombululo: i-ethylene ichithwa kwi-solvent kunye ne-polymerised phantsi koxinzelelo oluphezulu kunye ne-catalyst, imveliso ebangelwayo inobunzima be-molecular kwaye ifanelekile ukulungiselela i-HDPE ephezulu yokusebenza.
Indlela yokunqunyanyiswa: i-polymerisation iqhutywa ngokumisa i-ethylene monoma kwindawo yolwelo, le ndlela inokulawula ngokuthe ngqo iimeko ze-polymerization kwaye ifanelekile ukuveliswa kobunzima be-molecular HDPE.

IV. Iindawo ezingundoqo zesicelo se-HDPE
Ngenxa yokusebenza kwayo okugqwesileyo, iHDPE isetyenziswa ngokubanzi kumashishini aliqela:

Izinto zokupakisha: I-HDPE isetyenziswa ngokuqhelekileyo xa kusenziwa izinto zokupakisha ezifana neebhotile, imigqomo, iikhonteyina kunye neefilimu, ingakumbi izikhongozeli zodidi lokutya ngenxa yezinto ezingenayo ityhefu, ezingenavumba kunye ne-corrosion.
Ulwakhiwo kunye neziseko ezingundoqo: I-HDPE isetyenziselwa ukwenziwa kwemibhobho (umz. imibhobho yamanzi nerhasi), apho ukumelana nokuhlwa kwayo, ukuxhathisa kwe-UV kunye nokufakelwa lula kuyenze yaduma kushishino lokwakha.
Umzi-mveliso wekhebula: Iimpawu zokugquma umbane ze-HDPE ziyenza ilungele ukusetyenziswa njengemathiriyeli yokufaka ibhatyi yentambo kunye nokugquma.
Impahla yabathengi: I-HDPE ikwasetyenziswa kakhulu ekuveliseni iimpahla zabathengi bemihla ngemihla ezifana neengxowa zeplastiki, izinto zokudlala, izikhongozeli zendlu kunye nefenitshala.

V. Imingeni yokusiNgqongileyo kunye noPhuhliso lweKamva lweHDPE
Ngaphandle koluhlu olubanzi lwezicelo, ubume be-HDPE be-non-biodegradable bubeka imingeni yokusingqongileyo. Ukuze kuncitshiswe impembelelo yenkunkuma yeplastiki kokusingqongileyo, zininzi iinkampani eziye zaqalisa ukufunda ukurisayikilishwa nokusetyenziswa kwakhona kweteknoloji ye-HDPE. Okwangoku, amazwe amaninzi kunye nemimandla iye yaseka iinkqubo zokuphinda zisetyenziswe ukuphinda zisetyenziselwe izixhobo zeHDPE ezisetyenzisiweyo kwiimveliso ezintsha ukukhuthaza ukusetyenziswa okuzinzileyo kwemithombo.
Kwixesha elizayo, imveliso ezinzileyo kunye nokusetyenziswa kwe-HDPE iya kuba yinto entsha ekugxilwe kuyo uphando njengoko ulwazi lokusingqongileyo lukhula kunye nokuqhubela phambili kweteknoloji. Amanyathelo abandakanya uphuhliso lwe-HDPE esekwe kwi-bio kunye neendlela eziphuculweyo zokuphinda zisetyenziswe ziya kunceda ukunciphisa impembelelo embi yokusingqongileyo kwesi sixhobo ngelixa igcina indawo yayo ebalulekileyo kwimarike.
Ukuqukumbela
I-polyethylene ephezulu yoxinaniso (HDPE) ibe yinxalenye ebalulekileyo yoshishino lwanamhlanje kunye nobomi ngenxa yeempawu zayo ezizodwa ze-physicochemical kunye noluhlu olubanzi lwezicelo. I-HDPE iya kuqhubeka idlala indima ebalulekileyo kwimarike kwixesha elizayo ngokuphucuka okuqhubekayo kwiinkqubo zemveliso kunye nokwandiswa kokusebenza kokusingqongileyo.
Olu hlalutyo olucwangcisiweyo lubonelela ngombono obanzi ngakumbi we-HDPE kwaye lunceda nokuphucula ukusebenza komxholo kwiinjini zokukhangela kunye nokuphucula iziphumo ze-SEO.