Nke mb?, ka any? mara ihe ab?? a:
Kedu ihe b? PC ihe?
Na ?l? ?r? ah?, a na-akp? polycarbonate (polycarbonate) PC. N'ezie, ihe PC b? otu n'ime plastik ar?p?tara any?. Ihe kpatara eji eji ya eme ihe n'?t?t? ebe na-emep?ta ya kpamkpam site na njirimara ya. PC nwere uru p?r? iche nke fireproof, na-ad?gh? egbu egbu na colorable. Isi ihe b? na ? nwere nnukwu ike ?gbasawanye, okpom?k? d? elu na nguzogide d? ala, yana ezigbo extensibility. Isi ihe b? na àgwà nke ngwaah?a emechara d? mma. Nd? a agh?wo nh?r? maka ?t?t? ngwá ?l? ?h?r? PC d? ka ak?r?ngwa. Otu ihe kpatara ya.
Kedu ihe b? PP ihe?
PP b? mbiri nke polypropylene (Polypropylene), ? b?kwa ihe any? na-akp?kar? plastic Fold-fold, nke b?kwa ?d? plastik mmep?ta ihe. PP b? ngwaah?a r?ba s?ntet?t, mana ? nwekwara uru na ?gh?m ya. A ga-eji ihe PP mee ?t?t? karama ?m?aka n'ihi na ? na-eguzogide okpom?k? d? elu ma d? mma kar?a 100 degrees Celsius, n'ihi ya, ? d? mma maka mkpa nke mmiri na-esi na mmiri na-ekpo ?k? ugboro ugboro nke karama ?m?aka. Nkw?si ike nke PP d?t? mma.
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Ya mere, g?n? kpatara na ?l? ?r? ngwá ?l?, ihe nd? PC ji nway?? nway?? dochie ihe PP? Ihe kpatara ya b? nd? a:
Ihe na-eri
?n? ego ?z?ta ak?r?ngwa nke resin PC d? elu kar?a nke PP. Ngwa ngwa kachas? nj? nke PC kar?r? ton 20,000, ?n? ah?a ak?r?ngwa nke PP b? 10,000. PP b?kwa otu n'ime ?r? nd? a na-ejikar? eme ihe.
Echiche ejiji
N'ihe gbasara nnyefe ?k? nke plastik, resin PC na-emeri. PC b? otu n'ime plastic transperent at? nwere ezigbo nnyefe ?k?. Ngwongwo nd? emechara b? uzo na enwegh? agba. The permeability nke pp d? nn?? ogbenye, na PP na-emebu na-enwe mmet?ta d? egwu nke foogu, nke na-eme ka ?d?d? nke ihe ah? d?kwuo mma ma na-eme ka agba ya d?kwuo mma, nke na-eme ka ? d?kwuo elu. Nh?r? nke ?t?t? agba agh?wokwa ?kacha mmas? maka ya. Ihe kpatara nnabata. Nh?r? bara ?ba, ? b?gh? otu d? ka ihe PC.
Njirimara ihe onwunwe
Isi ike na ike nke plastik ab?? a d? iche. PC nwere ezigbo isi ike, PP nwere ike d? ala na ?l? okpom?k?, ? p?kwara ?d? mfe nr?r? ma gbadaa site na ike mp?ga. Agbanyegh?, PP nwere ezigbo isi ike, nke a na-akp?kar? Baizhe gluu, a na-ejikwa ya na ar?a ?l?. Isi ike ya na-eme ka ? d?kwuo ike ma nwee ikike ibu ibu ka mma.
Nr?p?ta
Mmiri mmiri nke injection PP d? ezigbo mma ma d? mfe ?mep?ta, ebe mmiri mmiri nke PC ad?gh? mma na ? na-esiri ike ?kwaga gluu. Na mgbakwunye, PC d? mfe ire ere ma gbanwee agba na oke okpom?k? na ?kp?zi injection, na ?kp?zi injection ch?r? ?ghasa PC ahaziri iche. Ya mere, n'eziokwu, ?n?ah?a nhazi nke ngwaah?a PC d? elu. N'otu oge ah?, mgbe PC injection ngwaah?a na-mere, n'ihi na ha transperent àgwà na mfe ?h? egosip?ta na ad?gh? ?cha n'ime, mkp?r? b? nn?? ala. ? b?r? na ? b? ah?a d? elu, ? na-esiri ike ?ch?kwa àgwà nke ngwaah?a PC, nke na-eme ka ?n? ah?a mmep?ta ihe d?kwuo ukwuu.
Ihe nchekwa
Ngwaah?a PC nwere ike imebi bisphenol A, nke na-emer? ah? ike mmad?. Oke okpom?k? PC anagh? emep?ta bisphenol A, mana bisphenol A b? ak?r?ngwa maka imep?ta plastik PC. Mgbe njik? nke bisphenol A gas?r?, a na-emep?ta PC. Mgbe njik? kem?kal? gas?r?, bisphenol A mb? ad?kwagh? ebe ah?. ? b? naan? na usoro njik? a b? usoro, yana nd?iche d? na usoro ah?, ? na-esiri ike 100% mmeghachi omume zuru oke, ma enwere ike ?nwe residual bisphenol A (ikekwe). Mgbe PC zutere oke okpom?k?, ? ga-eme ka bisphenol A si na r?ba p?ta. Ya mere, ? b?r? na enwere bisphenol A nke f?d?r? na ihe ah?, ma mmiri ozuzo na-ekpo ?k? na mmiri oyi ga-ad?, na oyi na-at? na-ad? ngwa ngwa.
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N'ihe niile, ar?m?r? nke PC na PP d? iche, na ? gagh? ekwe omume nan? ikpebi onye d? mma na onye d? nj?. ? ka d? mkpa ?h?r? ngwaah?a kacha mma maka oke ojiji. Na PP na-ejikar? eme ihe n'?h?a ngwá ?l?, nke mere na ngwá ?l? PP ji nway?? nway?? dochie ngwá ?l? PC.
Aj?j? ? b?la biko kp?t?r? mAndrew@sinotxj.com
Oge nzipu: Mee-24-2022