Izifakelo zemibhobho ye-PVC (i-Polyvinyl Chloride) zikho kuyo yonke indawo kwiziseko ezingundoqo zale mihla, imibhobho edibanisa imibhobho yamanzi, imibhobho yokuhambisa amanzi, unikezelo lwamanzi, kunye nothutho lolwelo lwamashishini. Udumo lwabo luvela kwiingenelo zendalo: ukumelana neekhemikhali, ukusebenza kakuhle kweendleko, kunye nokuqina kwesakhiwo. Nangona kunjalo, i-PVC ye-molecular structure-ebonakaliswe ngokuphindaphinda iiyunithi ze-vinyl chloride-iyenza ibe lula ekuthotyweni phantsi koxinzelelo lwe-thermal, oxidative, kunye ne-UV. KulaphoPVC izinzisizidlala indima ebalulekileyo: zithomalalisa ukuthotywa, ziqinisekisa ukuba izifakelo zemibhobho zigcina imfezeko yomatshini kunye nokusebenza kubomi babo benkonzo. Ngezantsi luhlalutyo olucacileyo lwezicelo zabo, iindlela, kunye neendlela zokukhetha kwiinkqubo zemibhobho yePVC.
1. KutheniYenza iPVCUkufakwa kwemibhobho kufuna izizinzisi
I-PVC ifumana ukonakaliswa okungenakulungiseka xa ibekwe kumaqondo obushushu aphakamileyo (esiqhelo kwi-extrusion okanye kwiinkqubo zokubumba iinaliti) okanye uxinzelelo olude lwendalo (umzekelo, ukukhanya kwelanga, ukufuma, okanye ukuvezwa kweekhemikhali). Indlela yokuqala yokuthotywa kwe-dehydrochlorination: ubushushu okanye amandla e-UV aphula iibhondi ze-C-Cl ezibuthathaka, ukukhulula i-hydrochloric acid (HCl) kunye nokuqalisa ukusabela kwekhonkco okukhokelela kwi-polymer chain scission. Oku kubonakala ngolu hlobo:
• Ukutshintsha kombala (utyheli okanye ube mdaka)
• Ukulahleka kwamandla empembelelo kunye nokuguquguquka
• Ukuqhekeka okanye ukonakala, ukubeka esichengeni ukuxhathisa ukuvuza
• Ukungcoliswa kolwelo oluthuthwayo (lubalulekile kwiinkqubo zamanzi aselwayo)
Izinzisi ziphazamisa le nkqubo, zibenza zibe yimfuneko kwimveliso yombhobho wePVC.
2. Iindlela zePVC zokuzinzisa kwiiFittings zePipe
Izinzisi zisebenza ngeendlela ezininzi zokusebenzisana ukukhusela iPVC:
•Ukucocwa kweHCl:I-Hydrochloric acid ikhutshiwe kwi-Neutralize, ukuyinqanda ekuqhubeni ukonakala.
•Isithintelo sasimahla seRadical:Ziphelise iintshukumo zamatsheyini eziqalwa bubushushu okanye iiradicals zasimahla ezenziwe yi-UV.
•Ukuhluthwa kwe-Metal ion:Ukubophelela ukungcola kwesinyithi (umzekelo, intsimbi, ubhedu) okukhawulezisa ukuwohloka.
•UVUkukhusela:Bonisa okanye ukufunxa imitha ye-UV, ebaluleke kakhulu kwimibhobho yangaphandle (umzekelo, umjelo ongaphezulu komhlaba).
•Uncedo lokuthambisa:Ezinye i-stabilizers (umzekelo, i-UV stabilizers), i-calcium stearate inciphisa ukungqubuzana ngexesha lokucubungula, ukuthintela ukushisa.
3. Iindidi zokuzinzisa ezisetyenziswa kwi-PVC Fittings Pipe
Ukukhethwa kwe-stabilizer kuxhomekeke kwiimeko zokucubungula, iimfuno zokuphela kokusetyenziswa, kunye nokuthotyelwa kokulawula. Iindidi eziqhelekileyo ziquka:
4. Iikhrayitheriya zokuKhetha eziBalulekileyo zokuFakelwa kwemibhobho
Xa uchaza izinzisi zokufakelwa kwemibhobho yePVC, abavelisi kufuneka baqwalasele:
•Ukulungiswa kweeParamitha:Ukushisa okukhuphayo / ukubumba (160-200 ° C kwimibhobho) kunye namaxesha okuhlala achaza ukuzinza okufunekayo kwe-thermal. Iinkqubo zobushushu obuphezulu (umzekelo, imibhobho yamanzi ashushu) ifuna izinzisi ezinokumelana nobushushu obuqinileyo (umz., i-organotin).
•Ukuphela kokusetyenziswa kwemeko-bume:Imibhobho yamanzi okusela ifuna isiqinisekiso se-NSF/ANSI 61 okanye i-WRAS, ekhethwayoCa-Znokanye i-organotin stabilizers. Imibhobho yangaphandle idinga izizinzisi ze-UV umz.
•Ukuthotyelwa koMgaqo:Izithintelo zehlabathi kwisinyithi esinzima (Pb, Cd) zityhalela ishishini kwindlela eco-friendly eco-friendly (Ca-Zn, izinzisi ezisekelwe kwi-organic-based).
•Iindleko vs. Ukusebenza:Ngelixa izinzisi ezisekelwe kwilothe zingabizi kakhulu, iindleko zexesha elide (umzekelo, izohlwayo zolawulo, imiceli mngeni yokurisayikilisha) zikhetha iindlela ezizinzileyo.
5. IiNdlela ezisakhulayo kwiTekhnoloji yokuZinzisa
Njengoko imimiselo yokusingqongileyo iqinisa kwaye uzinzo luzuza kuqala, ishishini lombhobho wePVC litshintshela:
•IiNkqubo zeCa-Zn eziFanelekileyo:Ukomelezwa kunye ne-co-stabilizers (umzekelo, iipolyols, i-zeolites) ukuhambelana nokusebenza kwe-thermal yeendlela ezizezinye ezisekelwe kwi-lead.
•Izinzinzisi eziSebenza ngokuNinzi:Ukudibanisa ukuzinza kwe-thermal, ukuxhathisa kwe-UV, kunye nokuthambisa kwisihlomelo esinye ukwenza lula ukwakheka.
•Izizinzisi eziSekwe kwi-Bio:Ithatyathwe kwimithombo ehlaziyekayo (umz., ii-esters ezisekwe kwiplanti), ukulungelelaniswa neenjongo zoqoqosho ezijikelezayo.
PVC izinzisizisisiseko sokusebenza kunye nobomi obude bokufakelwa kwemibhobho ye-PVC, okwenza ukuba ukusetyenziswa kwazo okukhuselekileyo nokuthembekileyo kuzo zonke iziseko ezingundoqo. Ukusuka ekuthinteleni ukuthotywa ngexesha lokwenziwa kwemveliso ukuya ekuqinisekiseni amashumi eminyaka enkonzo kwiindawo ezirhabaxa, indima yabo ayinakuthathelwa indawo. Njengoko i-industry ikhula, ukugxila kwi-low-toxicity, i-high-performance stabilizers-ingakumbi i-calcium-zinc complexes-iya kuqhuba izinto ezintsha, ukulinganisa ukusebenza kunye noxanduva lokusingqongileyo. Kwiinjineli kunye nabavelisi, ukukhetha isizinzisi esifanelekileyo ayilokhetho nje lobugcisa kodwa kukuzibophelela ekomeleleni, kukhuseleko, nasekuthobeleni imithetho.
Ixesha lokuposa: Sep-02-2025