I-Polyvinyl chloride (PVC) yi-polymer eyenziwe yi-polymerization ye-vinyl chloride monomer (VCM) xa kukho izinto eziqalayo ezifana nee-peroxides kunye nee-azo compounds okanye ngendlela ye-free radical polymerization phantsi kwesenzo sokukhanya okanye ubushushu. I-PVC yinto ye-polymer esebenzisa i-atom ye-chlorine ukutshintsha i-atom ye-hydrogen kwi-polyethylene, kwaye ii-homopolymers ze-vinyl chloride kunye nee-copolymers ze-vinyl chloride zibizwa ngokuba zii-vinyl chloride resins.
Iitsheyini ze-PVC zemolekyuli ziqulathe iiathom ze-polar chlorine ezinamandla kakhulu ezinamandla aphezulu phakathi kweemolekyuli, ezenza iimveliso zePVC zibe lukhuni ngakumbi, ziqine, kwaye zisebenze kakuhle, kwaye zinobuqhetseba obuhle bomlilo (ubuqhetseba bomlilo bubhekisa kwipropati enezinto okanye into enayo emva konyango ukuze ilibazise kakhulu ukusasazeka komlilo); nangona kunjalo, amaxabiso ayo e-dielectric constant kunye ne-dielectric loss angle tangent makhulu kunee-PE.
I-resin ye-PVC iqulethe inani elincinci leebhondi eziphindwe kabini, iityathanga ezinamasebe kunye neentsalela ze-initiator ezishiyekileyo kwi-polymerization reaction, kunye nee-athomu ze-chlorine kunye ne-hydrogen phakathi kwee-athomu ezimbini zekhabhoni ezikufutshane, ezisuswa lula kwi-chlorine, nto leyo ebangela ukuba i-PVC ilahleke lula phantsi kwesenzo sokukhanya nobushushu. Ke ngoko, iimveliso ze-PVC kufuneka zongeze izinto ezizinzisa ubushushu, ezifana ne-calcium-zinc heat stabilizer, i-barium-zinc heat stabilizer, i-lead salt heat stabilizer, i-organic tin stabilizer, njl.
Izicelo eziphambili
I-PVC iza ngeendlela ezahlukeneyo kwaye ingacutshungulwa ngeendlela ezahlukeneyo, kuquka ukucinezela, ukukhupha, ukujova, kunye nokugquma. Iiplastiki ze-PVC zisetyenziswa kakhulu ekwenzeni iifilimu, ulusu olungeyolwenziweyo, ukufudumala kweengcingo kunye neentambo, iimveliso eziqinileyo, umgangatho, ifenitshala, izixhobo zemidlalo, njl.
Iimveliso zePVC zihlala zahlulwe zibe ziindidi ezi-3: eziqinileyo, eziqinileyo nezithambileyo. Iimveliso eziqinileyo neziqinileyo zicutshungulwa ngaphandle okanye ngeplastiki encinci, ngelixa iimveliso ezithambileyo zicutshungulwa ngeplastiki eninzi. Emva kokongeza iiplastiki, ubushushu botshintsho lweglasi bunokwehliswa, nto leyo eyenza kube lula ukuyicubungula kubushushu obuphantsi kwaye yonyusa ukuguquguquka kunye nokuqina kwekhonkco leemolekyuli, kwaye yenza kube nokwenzeka ukwenza iimveliso ezithambileyo eziguquguqukayo kubushushu begumbi.
1. Iiprofayili zePVC
Isetyenziswa kakhulu ekwenzeni iingcango neefestile kunye nezinto ezonga umbane.
2. Imibhobho yePVC
Iipayipi zePVC zineentlobo ngeentlobo, zisebenza kakuhle kwaye zisetyenziswa ngeendlela ezahlukeneyo, kwaye zinendawo ebalulekileyo kwimarike.
3. Iifilimu zePVC
I-PVC inokwenziwa ibe yifilimu ecacileyo okanye enemibala enobukhulu obuthile ngokusebenzisa ikhalenda, kwaye ifilimu eveliswa yile ndlela ibizwa ngokuba yifilimu ekwikhalenda. Izinto eziluhlaza ze-PVC eziziigranular zingavuthelwa kwifilimu kusetyenziswa oomatshini bokubumba, kwaye ifilimu eveliswa yile ndlela ibizwa ngokuba yifilimu yokubumba. Ifilimu ingasetyenziselwa iinjongo ezininzi kwaye ingacutshungulwa ibe ziingxowa, ii-raincoats, amalaphu etafile, amakhethini, izinto zokudlala ezifuthwayo, njl.njl. ngeendlela zokusika kunye nokuvala ubushushu. Iifilimu ezibanzi ezicacileyo zingasetyenziselwa ukwakha ii-greenhouse kunye nee-greenhouse zeplastiki, okanye zisetyenziswe njengeefilimu zomgangatho.
4. Ibhodi yePVC
Kongezwe nge-stabilizer, i-lubricant kunye ne-filler, kwaye emva kokuxuba, i-PVC ingakhutshwa kwiipayipi ezahlukeneyo ze-caliber hard, iipayipi ezimile okweemibhobho kunye neepayipi ezirhabaxa nge-extruder, kwaye isetyenziswe njenge-downpipe, ipayipi yamanzi okusela, i-electric wire casing okanye i-stairrail handrail. Amaphepha afakwe kwi-calended ayagqunywa kwaye acinezelwe ngobushushu ukwenza amaphepha aqinileyo anobukhulu obahlukeneyo. Amaphepha anganqunyulwa abe ziimo ezifunwayo aze emva koko adityaniswe ngomoya oshushu kusetyenziswa iintonga ze-PVC zokuwelda kwiitanki ezahlukeneyo zokugcina ezinganyangekiyo ngamakhemikhali, ii-ducts kunye nezikhongozeli, njl.njl.
5. Iimveliso ezithambileyo zePVC
Ukusebenzisa i-extruder, ingafakwa kwiipayipi, iintambo, iingcingo, njl.njl.; kusetyenziswa umatshini wokubumba inaliti oneentlobo ngeentlobo zeenkuni, ingenziwa ngeesandali zeplastiki, izihlangu, iislipper, iithoyi, iindawo zeemoto, njl.njl.
6. Izixhobo zokupakisha zePVC
Iimveliso zePVC zokupakisha ikakhulu kwiintlobo ngeentlobo zeekhonteyina, ifilimu kunye nephepha eliqinileyo. Iikhonteyina zePVC zenzelwe ikakhulu amanzi aneminerali, iziselo, iibhotile zokuhombisa, kodwa zikwasetyenziselwa ukupakisha ioyile ecociweyo.
7. Iiplanga zePVC kunye nomgangatho
I-PVC siding isetyenziswa kakhulu endaweni ye-aluminium siding, iithayile zomgangatho wePVC, ngaphandle kwenxalenye ye-resin yePVC, ezinye izinto zizinto ezisetyenzisiweyo, izincamathelisi, izizalisi kunye nezinye izinto, ezisetyenziswa kakhulu kumgangatho wesiphelo sesikhululo seenqwelo-moya nakwezinye iindawo zomhlaba oqinileyo.
8. Iimveliso zabathengi bePVC
Iimveliso zePVC zinokufumaneka kuyo yonke indawo kubomi bethu bemihla ngemihla. IPVC isetyenziselwa ukwenza izikhumba ezahlukeneyo zokwenziwa zeengxowa zemithwalo, iimveliso zemidlalo ezifana neebhola zebhasikithi, iibhola zebhola ekhatywayo kunye neebhola zeragbi. Ikwasetyenziselwa ukwenza iiyunifomu kunye neebhanti zezixhobo ezikhethekileyo zokuzikhusela. Amalaphu ePVC eempahla ngokubanzi ngamalaphu afunxayo (akufuneki ngubo) afana neeponchos, iibhulukhwe zabantwana, iijakethi zesikhumba zokwenziwa kunye neebhutsi zemvula ezahlukeneyo. IPVC ikwasetyenziswa kwiimveliso ezininzi zemidlalo nezolonwabo ezifana neethoyi, iirekhodi kunye neempahla zemidlalo.
Ixesha lokuthumela: Julayi-19-2023