Ubhidwe zizo zonke iinketho zokufakwa kweplastiki? Ukukhetha okungalunganga kunokukhokelela ekulibazisekeni kweprojekthi, ukuvuza, kunye nokulungiswa kweendleko. Ukuqonda ukufakwa kwePP ngundoqo ekukhetheni indawo elungileyo.

Izixhobo zePP ziziqhagamshelo ezenziwe kwi-polypropylene, i-thermoplastic enzima kunye ne-versatile. Ngokuyintloko zisetyenziselwa ukujoyina imibhobho kwiinkqubo ezifuna ukunyamezela ubushushu obuphezulu kunye nokuchasana okugqwesileyo kwiikhemikhali, ezizenza zilungele ushishino, i-laboratory, kunye nezicelo zamanzi ashushu.

Kutshanje ndiye ndafowunelwa noBudi, umphathi wokuthenga e-Indonesia. Uyingcaphephe kwiPVC kodwa unomthengi omtsha ocelayo “Ufakelo loxinzelelo lwePP"Ukulungiswa kwebhubhoratri. UBudi wayengaqinisekanga ngokupheleleyo malunga nokungafani okuphambili kunye nexesha lokuncoma iPP phezu kwePVC uyazi kakuhle. Wayenexhala malunga nokubonelela ngeengcebiso ezingalunganga. Imeko yakhe ixhaphakile. Uninzi lweengcali ziqhelana nolunye uhlobo okanye ezimbini zezinto zombhobho kodwa zifumanisa iindidi ezininzi zeeplastiki zigqithise. Yaphula into eyenza ukuba iifakelo zePP zibe licandelo elibalulekileyo kwimibhobho yanamhlanje.

Yintoni ukufakwa kwePP?

Kufuneka uqhagamshele imibhobho yomsebenzi onzima, kodwa awuqinisekanga ukuba iPVC inokusingatha. Ukusebenzisa imathiriyeli engalunganga kuya kukhokelela ekungaphumeleli kwenkqubo kunye nokusebenza kwakhona okubiza imali eninzi.

Ukufakwa kwePP sisiqwenga soqhagamshelo esenziwe kwiplastiki yepolypropylene. Iimpawu zayo eziphambili zizinzo lobushushu obuphezulu (ukuya kuthi ga kwi-180 ° F okanye i-82 ° C) kunye nokumelana okuphezulu neeasidi, iialkali, kunye nezinye iikhemikhali ezidliwayo, yiyo loo nto ikhethwa ngaphezu kwePVC eqhelekileyo kwiindawo ezithile.

Xa sijonga ngokusondeleyo kwi-PP efanelekileyo, sijonge ngokwenene kwiipropathi ze-polypropylene ngokwayo. NgokungafaniyoI-PVC, enokuthi ibe yi-brittle kunye neekhemikhali ezithile okanye ikhubaze kumaqondo aphezulu aphezulu, i-PP igcina ingqibelelo yayo yesakhiwo. Oku kwenza kube yinto yokuya kwizinto ezifana nemigca yenkunkuma yeekhemikhali kwilebhu yeyunivesithi okanye iilophu zokujikeleza kwamanzi ashushu kwisakhiwo sorhwebo. Ndamchazela Budi ukuba ngoxa zombini PVC kunyeIzixhobo zePPukudibanisa imibhobho, imisebenzi yabo yahluke kakhulu. Usebenzisa iPVC kwimibhobho yamanzi abandayo ngokubanzi. Usebenzisa iPP xa ubushushu okanye iikhemikhali zibandakanyeka. Waqonda ngoko nangoko. Ayithethi malunga nokuba yeyiphi “engcono,” kodwa yeyiphiisixhobo esifanelekileyongomsebenzi othile ekufuneka umthengi wakhe awenze.

I-PP vs. Izixhobo zePVC: Uthelekiso oluKhawulezayo

Ukwenza ukhetho lucace ngakumbi, nantsi ukuchithwa okulula apho impahla nganye ikhanya khona.

Ithetha ukuthini iPP kwimibhobho?

Uyababona oonobumba “PP” kwikhathalogu yemveliso, kodwa bathetha ukuthini ngokwenene kwinkqubo yakho? Ukungahoyi iikhowudi eziphathekayo kunokukhokelela ekuthengeni imveliso engafanelekanga.

Kwimibhobho, iPP imele iPolypropylene. Ligama lepolymer ye-thermoplastic esetyenziselwa ukwenza umbhobho okanye ukufaneleka. Le leyibhile ikuxelela ukuba imveliso yakhelwe ukuhlala ixesha elide, ukumelana neekhemikhali, kunye nokusebenza kumaqondo obushushu aphakamileyo, iyahlula kwezinye iiplastiki ezifana nePVC okanye i-PE.

I-Polypropylene yinxalenye yentsapho yezinto ezibizwathermoplastics. Ngamagama alula, oku kuthetha ukuba ungayifudumeza ukuya kwindawo yokunyibilika, uyipholise, kwaye uphinde uyifudumeze kwakhona ngaphandle kokuthotywa okubalulekileyo. Le propathi yenza kube lula ukwenza iimilo ezintsonkothileyo ezifana nokufakwa kweeti, iingqiniba, kunye neadaptha ngokubumba inaliti. Kumphathi wokuthenga njengoBudi, ukwazi "PP" kuthetha ukuba i-polypropylene yinyathelo lokuqala. Okulandelayo kukuqonda ukuba kukho iindidi ezahlukeneyo zePP. Ezona ziqhelekileyo zimbiniPP-H(I-Homopolymer) kunye ne-PP-R (i-Random Copolymer). I-PP-H iqinile kwaye isoloko isetyenziselwa izicelo zoshishino. I-PP-R iguquguquka ngakumbi kwaye isemgangathweni kwiinkqubo zombini zemibhobho yamanzi ashushu nabandayo kwizakhiwo. Olu lwazi lumnceda abuze abathengi bakhe imibuzo engcono ukuqinisekisa ukuba bafumana eyona mveliso bayifunayo.

Iintlobo zePolypropylene kwiPiping

Yintoni umbhobho wePP?

Udinga umbhobho wamanzi ashushu okanye umgca wekhemikhali kwaye ufuna ukuphepha ukubola kwesinyithi. Ukukhetha imathiriyeli yombhobho engalunganga kunokukhokelela kungcoliseko, ukuvuza, kunye nobomi obufutshane benkonzo.

Umbhobho wePP ngumbhobho owenziwe ngeplastiki yepolypropylene, eyenzelwe ngokukodwa ukuthutha ulwelo olushushu, amanzi okusela, kunye neekhemikhali ezahlukeneyo ngokukhuselekileyo. Ikhaphukhaphu, ayidleki, kwaye ibonelela ngomphezulu ogudileyo wangaphakathi omelana nokwakhiwa kwesikali, iqinisekisa ukuhamba okungaguqukiyo ekuhambeni kwexesha.

Imibhobho yePP isetyenziswa kunye nokufakwa kwePP ukwenza inkqubo epheleleyo, elinganayo. Enye yeenzuzo ezinkulu yindlela ezidityaniswa ngayo. Ukusebenzisa indlela ebizwaukuwelda ukudibanisa ubushushu, umbhobho kunye nokufakelwa kushushu kwaye kuhlanganiswe ngokusisigxina. Oku kudala ukuqina,ukuvuza-proof jointoko kunamandla njengombhobho ngokwawo, ukuphelisa iindawo ezibuthathaka ezifumaneka kwi-glued (PVC) okanye i-threaded (intsimbi) iinkqubo. Ndakha ndasebenza nomxhasi kwindawo entsha yokulungisa ukutya. Bakhetha ngokupheleleyoInkqubo yePP-Rngamanzi abo ashushu kunye nemigca yokucoca. Ngoba? Ngenxa yokuba izinto aziyi kuvula naziphi na iikhemikhali emanzini, kwaye amajoyinti adibeneyo athetha ukuba akukho migodi yokukhula kwebhaktheriya. Oku kwaqinisekisa ukucoceka kwemveliso yabo kunye nokhuseleko lwenkqubo yabo. Kubo, izibonelelo zombhobho wePP zahamba ngaphaya kwemibhobho elula; ibingumba wolawulo lomgangatho.

Ziziphi izixhobo zePB?

Uva malunga nokufakelwa kwe-PB kwaye uyazibuza ukuba ngaba yenye ye-PP. Ukubhidanisa ezi zixhobo zimbini kunokuba yimpazamo enkulu, njengoko ubani enembali yokusilela ngokubanzi.

Ufakelo lwe-PB ziziqhagamshelo zemibhobho yePolybutylene (PB), imathiriyeli yemibhobho ebhetyebhetye xa iqhelekile kwimibhobho yokuhlala. Ngenxa yezinga eliphezulu lokungaphumeleli kokuphuka kweekhemikhali, imibhobho ye-PB kunye nokufakelwa kwayo ayisavunywa ngobuninzi beekhowudi zemibhobho kwaye ithathwa njengento ephelelwe yisikhathi kwaye ingathembekanga.

Eli linqaku elibalulekileyo lemfundo kuye nabani na okwishishini. Ngoxa i-PP (i-Polypropylene) yinto yangoku, ethembekileyo, i-PB (Polybutylene) yingxaki eyandulelayo. Ukusukela ngeminyaka yoo-1970 ukuya koo-1990, iPB yafakelwa ngokubanzi imigca yamanzi ashushu nabandayo. Nangona kunjalo, kwafunyaniswa ukuba iikhemikhali eziqhelekileyo kumanzi kamasipala, njengeklorini, zihlasele i-polybutylene kunye nezixhobo zayo zeplastiki, zizenza zibe brittle. Oku kwakhokelela kwiintanda ngequbuliso kunye nokuvuza okuyintlekele, okubangele iibhiliyoni zeedola kumonakalo wamanzi kumakhaya angenakubalwa. Xa uBudi efumana isicelo ngamaxesha athile sofakelo lwePB, iqhelekile ukuba ilungiswe. Ndimqeqeshe ukuba acebise ngokukhawuleza umthengi malunga nemingcipheko yenkqubo yonke ye-PB kwaye acebise ukutshintshwa okupheleleyo kunye nezinto ezizinzileyo, zanamhlanje ezifanaPP-R or I-PEX. Ayikokwenza intengiso enkulu; imalunga nokukhusela umthengi kwintsilelo yexesha elizayo.

Ipolypropylene (PP) vs. Polybutylene (PB)

Ukuqukumbela

Izixhobo zePP, ezenziwe kwi-polypropylene ehlala ixesha elide, yindlela yokukhetha amanzi ashushu kunye neenkqubo zeekhemikhali. Ziyisisombululo samanje, esithembekileyo, ngokungafaniyo nezinto ezindala, ezingaphumeleliyo ezifana ne-polybutylene.