Ama-70% omphezulu wehlabathi lulwandle. Ukususela kwiidokhi zolwandle ukuya kwiibhulorho ezintle zaselunxwemeni kunye nezolimo zamanzi zaselwandle zanamhlanje, abantu baye badala ubutyebi obungenakubalwa besebenzisa olu lwandle lukhulu. Nangona kunjalo, izixhobo ezilungileyo zibalulekile ukuze kuphumelele. Izinto eziqhelekileyo ezifana nomthi, intsimbi, kunye nekhonkrithi zihlala zineendleko eziphezulu kakhulu zokulungisa kunye nobomi obulinganiselweyo. Ukufumana izinto ezintsha ezinokumelana nokugqwala kwamanzi olwandle, ukuvezwa yi-UV, ukukhukuliseka kwamaza, kunye nokubola kwe-biofouling ixesha elide kubalulekile. I-polyethylene enoxinano oluphezulu (i-HDPE), iplastiki yobunjineli, ivele ngokusebenza kwayo okuphantse kube semgangathweni, yaba zizinto ezifanelekileyo zokwakha izakhiwo zaselwandle.
Kutheni i-HDPE iye yaba yeyona nto ifanelekileyo?
1. Ukumelana Nokugqwala: I-HDPE ibonakalisa uzinzo oluphezulu kwi-asidi, ii-alkalis, kunye neetyuwa, iyamelana nokugqwala kwamanzi olwandle, kwaye ayigqwali njengentsimbi eqhelekileyo okanye ibole njengomthi.
2. Ihlala ixesha elide kwaye ayichaphazeli mpembelelo: Nokuba kwi -40 degrees Celsius,Amaphepha e-HDPEzigcina ukuqina kwazo, zikhusela ngempumelelo iimpembelelo ezivela kwiinqanawa kwaye zinyamezele ukukhukuliseka kwexesha elide ngenxa yodaka.
3. Amandla Okunganamatheli: Umphezulu ogudileyo kakhulu weeshiti zeHDPE wenza kube nzima ukuba uninzi lwezinto eziphilayo zasemanzini zinamathele ngokuqinileyo.
4. Ilula kwaye iguquguqukayo kakhulu: Amaphepha e-HDPE anobunzima obungaphantsi kwamanzi, nto leyo eyenza kube lula ukuwafaka nokuwathutha. Angadityaniswa ngaphandle komthungo nge-hot-melt welding ukuze enze isakhiwo esomeleleyo nesidibeneyo.
5. Iluhlaza kwaye inobuhlobo nokusingqongileyo, ingasetyenziswa kwakhona nge-100%:Izinto zeHDPEingasetyenziswa kwakhona ngokupheleleyo, nto leyo eyenza ukuba ibe yinto eluhlaza ngokwenene kwaye inobuhlobo nokusingqongileyo.
6. Ubomi obude benkonzo kunye neendleko eziphantsi zokugcinwa: Amaphepha e-HDPE awadingi phantse ukulungiswa kokulwa nokugqwala okanye ukukhuselwa kwezinambuzane kulo lonke ixesha lawo lobomi, nto leyo ebangela iindleko zokugcinwa eziphantsi kakhulu.
Idokhi esebenzisa iifendi zomthi oqinileyo, emva kweminyaka eliqela, yaqhekeka ngenxa yemijikelo ephindaphindayo yokomisa emanzini kunye nokuntywiliselwa emanzini olwandle ixesha elide, nto leyo eyafuna ukutshintshwa rhoqo. Kwasetyenziswa iifendi zeHDPE endaweni yoko. Ukuqina kwayo kuyivumela ukuba ifunxe kwaye isasaze amandla okungqubana avela kwindawo yokubeka iinqanawa, kwaye ukumelana kwayo nokugqwala kunye nokumelana ne-UV kuqinisekisa ukuba amaphepha eHDPE agcina umbala wawo ixesha elide, angafuni kulungiswa ixesha elide kwaye anciphise iindleko zokusebenza kwedokhi.
Kwiifama zesalmon zase-UK, uninzi lwazoIphepha le-HDPEiifreyimu zenza iindawo ezininzi zokulima ezivulekileyo kunye nomgangatho wamanzi ongcono. Iifreyimu zeshiti azidli mhlwa, kwaye iindawo zazo ezigudileyo zisusa isidingo sokucoca iidiphozithi.
Ukususela kwiifendi zeenqanawa ukuya kwizibonelelo zezolimo zaselwandle, izinto zeHDPE zibonakalise ukusebenza kwazo okuphezulu njengezinto ezifanelekileyo kwindalo esingqongileyo yaselwandle enzima. Ngophuhliso olukhulayo loqoqosho lwaselwandle, amaphepha eHDPE, aneempawu zawo ezikhuselekileyo, ezihlala ixesha elide, ezinobuhlobo nokusingqongileyo, kunye neempawu zazo ezinoqoqosho oluphezulu, aza kudlala indima engenakutshintshwa kuqoqosho olukhula ngokukhawuleza, kuquka amaqonga e-photovoltaic aselwandle kwixesha elizayo kunye needoksi ezinobuhlobo nokusingqongileyo.
Ixesha leposi: Disemba-02-2025
