Okokuqala, makhe sazi ezi zixhobo zimbini:
Yintoni impahla yePC?
Kwishishini, i-polycarbonate (i-Polycarbonate) ibizwa ngokuba yiPC. Ngapha koko, imathiriyeli yePC yenye yeeplastiki zethu zamashishini. Isizathu sokuba isetyenziswe ngokubanzi kwimveliso igqitywe ngokupheleleyo yimpawu zayo. I-PC ineenzuzo ezizodwa zokungatshi, ezingenatyhefu kunye nombala. Into ephambili kukuba inamandla amakhulu okwandisa, ubushushu obuphezulu kunye nokumelana nobushushu obuphantsi, kunye nokwandiswa okulungileyo. Into ephambili kukuba umgangatho wemveliso egqityiweyo ulungile. Ezi zibe lukhetho lwefenitshala emininzi yokukhetha iPC njengento ekrwada. Isizathu esibalulekileyo.
Yintoni imathiriyeli yePP?
I-PP sisishunqulelo se-polypropylene (i-Polypropylene), kwaye ikwayinto esiyibiza ngokuba yi-Fold-fold plastic, ekwaluhlobo lweplastiki yemveliso yemizi-mveliso. I-PP yimveliso yeplastiki yokwenziwa, kodwa nayo ineengenelo zayo kunye nokungalungi kwayo. Iibhotile ezininzi zomntwana ziya kwenziwa ngezinto zePP kuba ziyakwazi ukumelana nobushushu obuphezulu kwaye zilungile ngokupheleleyo ngaphezu kwe-100 degrees Celsius, ngoko ke ifanelekile kwiimfuno zokubulala iintsholongwane zamanzi rhoqo kwiibhotile zabantwana. Uzinzo lwePP lulungile.
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Ke kutheni kwishishini lefenitshala, izixhobo zePC zitshintshwa ngokuthe ngcembe zizinto zePP? Izizathu zezi zilandelayo:
Ixabiso factor
Iindleko zokuthengwa kwezinto ezikrwada zePC resin ziphezulu kakhulu kunezo zePP. Eyona nto imbi kakhulu ye-PC ingaphezulu kwe-20,000 itoni, kunye neendleko ze-PP ze-10,000. I-PP ikwayenye yeeprojekthi ezisetyenziswa kakhulu.
Ingqiqo yefashoni
Ngokumalunga nokuhanjiswa kokukhanya kweeplastiki, i-PC resin iphumelele. IPC yenye yeeplastiki ezintathu ezicacileyo ezinokuhanjiswa kokukhanya okugqwesileyo. Ifenitshala egqityiweyo iyabonakala kwaye ayinambala. I-permeability ye-pp ihlupheke kakhulu, kwaye i-PP eqhelekileyo inemvakalelo enqabileyo yenkungu, ephucula ukuthungwa kwezinto kwaye yenza umbala ube matte, okwenza kube phambili. Ukukhethwa kwemibala emininzi kuye kwaba yintandokazi kuyo. Izizathu zokwamkela. Ukhetho olutyebileyo, alufani nolunye njengezinto zePC.
Iimpawu zezinto eziphathekayo
Ukuqina kunye nokuqina kwezi plastiki zimbini zahlukile. IPC inobulukhuni obubalaseleyo, iPP inobulukhuni obuphantsi kakhulu kwiqondo lobushushu begumbi, kwaye inokukhubazeka ngokulula kwaye igotywe ngamandla angaphandle. Nangona kunjalo, iPP inokuqina okuhle kakhulu, eyaziwa ngokuba yiBaizhe glue, kwaye isetyenziswa kakhulu kwifanitshala. Ukuqina kwayo kuyenza yomelele kwaye ibe nomthamo ongcono wokuthwala umthwalo.
Ukwenziwa kwezinto
I-fluidity ye-injection ye-PP ilungile kakhulu kwaye kulula ukuyifaka, ngelixa i-fluidity ye-PC imbi kakhulu kwaye kunzima ukuhambisa iglue. Ukongeza, iPC kulula ukubola kunye nokutshintsha umbala kwiqondo lobushushu eliphezulu ekubumbeni inaliti, kunye nokubumba inaliti kufuna isikrufu sePC esenziwe ngokwezifiso. Ke eneneni, iindleko zokusetyenzwa kweemveliso zePC ziphezulu. Kwangaxeshanye, xa iimveliso zenaliti zePC zenziwe, ngenxa yeempawu zazo ezicacileyo kwaye kulula ukubona amaqamza kunye nokungcola ngaphakathi, isivuno siphantsi kakhulu. Ukuba imarike ephezulu, kunzima kakhulu ukulawula umgangatho weemveliso zePC, eziye zandisa kakhulu iindleko zemveliso.
Ukhuseleko factor
Iimveliso zePC zinokubola i-bisphenol A, eyingozi kwimpilo yabantu. Ubushushu obuphezulu bePC ayivelisi i-bisphenol A, kodwa i-bisphenol A yimathiriyeli ekrwada yokuveliswa kweeplastiki zePC. Emva kokwenziwa kwe-bisphenol A, iPC iyaveliswa. Emva kokwenziwa kweekhemikhali, i-bisphenol A yokuqala ayisekho. Kuphela nje le nkqubo yodibaniso yinkqubo, kwaye kukho ukutenxa kwinkqubo, kunzima ukuya ku-100% ukusabela okupheleleyo, kwaye kusenokubakho intsalela ye-bisphenol A (kunokwenzeka). Xa iPC idibana nobushushu obuphezulu, iya kubangela ukuba i-bisphenol A iphume eplastikini. Ke ngoko, ukuba kukho intsalela ye-bisphenol A kwimathiriyeli, zombini imvula eshushu kunye nemvula ebandayo ziya kubakho, kwaye imvula ebandayo icotha kakhulu.
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Lilonke, ukusebenza kwePC kunye nePP yahlukile, kwaye akunakwenzeka ukucacisa nje ukuba ngubani olungileyo kwaye ngubani ongalunganga. Kusafuneka ukuba ukhethe eyona mveliso ilungileyo kububanzi bokusetyenziswa. Kwaye iPP isetyenziswa ngokubanzi kwintsimi yefenitshala, yiyo loo nto ifenitshala yePP ithatha indawo yefenitshala yePC ngokuthe ngcembe.
Nawuphi na umbuzo nceda uqhagamshelane namAndrew@sinotxj.com
Ixesha lokuposa: May-24-2022