Iindaba
Kutheni sikhetha iivalvu zePVDF, izifakelo zemibhobho nemibhobho?
Kutheni sikhetha iivalvu zePVDF, izifakelo zemibhobho nemibhobho?
Kukho i-UPVC, i-CPVC, i-PPH, i-PVDF, ii-valve ze-FRPP, izixhobo zepayipi kunye nemibhobho kwimarike. Kutheni sikhetha imathiriyeli yePVDF? Okokuqala kufuneka sazi olu phawu lulandelayo lwePVDF:
Yintoni iMathiriyeli yePVDF yeempawu?
I-Polyvinylidene fluoride, ekubhekiselwa kuyo njenge-PVDF, yi-monomer eyenziwe yi-trifluoroethylene, i-hydrofluoric acid kunye ne-zinc powder, kwaye emva kwe-polymerization ukuvelisa i-crystalline emhlophe eqinile.
Emva kwe-welding eshushu yokunyibilika kwe-butt, isinxibelelanisi siya kulungiswa kumatshini wokuwelda we-butt we-melt, kunye nokupholisa isinxibelelanisi ngokwexesha lokupholisa elichazwe kwimimiselo yogcino loxinzelelo kunye nokupholisa umatshini we-welding we-butt oshushu onyibilikayo. Emva kokupholisa, nciphisa uxinzelelo kwi-zero, uze ususe umbhobho odibeneyo / izixhobo.
Yintoni iiPropati zePVDF zoMzi?
| Into | Iyunithi | Ixabiso eliMgangatho | Umgangatho |
| Ukuxinana | kg/m³ | 1770-1790 | ISO 1183 |
| Vicat | ℃ | ≥165 | ISO 2507 |
| Tensile strength | MPa | ≥40 | ISO 6259 |
| Amandla empembelelo (23 ℃) | KJ/m² | ≥160 | ISO 179 |
| Ireyishini yokurhoxa ngokuthe nkqo (150 ℃) | % | ≤2 | ISO 2505 |
1.Ukumelana nobushushu:
Inkqubo yombhobho ye-PVDF inozinzo oluhle lwe-thermal, inokugcina ukusebenza okuzinzile kuluhlu olubanzi lwamaqondo okushisa, ukusetyenziswa kwexesha elide lobushushu ukuya kwi-150 ° C okanye kunjalo.
2.Amandla omatshini:
Xa kuthelekiswa nezinye izinto zeplastiki, iivali zePVDF, izifakelo zemibhobho kunye nemibhobho zinamandla amakhulu okuqina, ukuxhathisa impembelelo kunye nokuxhathisa i-abrasion, kwaye inokugcina ukuqina okulungileyo kunye nokuqina nakwiqondo lokushisa eliphantsi.
3.Uzinzo lweDimensional:
Iiplanga ze-PVDF, izixhobo zombhobho kunye nemibhobho ibonisa i-coefficient encinci yokwandiswa kwe-thermal xa iphantsi kobushushu okanye ibanda, ngoko iyakwazi ukugcina ukuchaneka okuzinzile kwe-dimensional.
4. Ukuqina kunye nobungqongqo:
ubulukhuni obuphezulu kunye nokuqina okulungileyo, okwenza umbhobho ungabi lula ukukhubaza kwaye kulula ukuyifaka.
Yintoni iipropati zeekhemikhali ze-PVDF?
1.Ukumelana nomhlwa kwiChemical:
I-PVDF i-vales, i-pipe fittings kunye nemibhobho ine-inertness ephezulu yeekhemikhali kwii-asidi ezininzi, i-alkalis, iityuwa kunye nezinyibilikisi ezininzi ze-organic, eyona nto ifanelekileyo yombhobho yokuhambisa imidiya eyonakalisayo kwishishini lemichiza.
2.Ukungancamathiseli:
ubuso obugudileyo, akulula ukubambelela kwizinto eziphathekayo, ezinokunciphisa ukuqokelelwa kwesikali kunye nokuvala isiganeko kwinkqubo yokuhambisa.
Yintoni indlela yokudibanisa iimveliso zePVDF?
Ngokufanayo ne-PPH, inkqubo yombhobho ye-PVDF ibotshelelwa kukunyibilika okushushu, nayo inokwahlulwa ibe yiwelding eshushu ye-socket ye-socket kunye ne-hot melt butt welding. Amanyathelo athile e-socket ye-socket welding eshushu efana ne-PPH nayo.
Amanyathelo athile ashushu anyibilikayo anyibilikayo kwi-butt ye-PVDF efana ne-PPH nayo, kodwa kukho okwahlukileyo kwireferensi yenkqubo, iinkcukacha zingezantsi:
| Udonga oluqhelekileyo ubukhulu/MM | Ukulungelelanisa | Ukufudumeza | Ukudluliselwa | Ukuwelda | |
| 240℃±8℃ icandelo lokufudumezaiqondo lobushushu 240℃±8℃ | |||||
| Ukuphakama kweflap kwi ishushu inxalenye ekupheleni ixesha lolungelelaniso (min) (ulungelelwaniso p=0.01N/mm2)/mm | ixesha lokufudumeza≈10e+40s | Ixesha lokutshintshela (ubuninzi)/s | Uxinzelelo lwe-Welding ixesha/amaxesha okuqulunqa | Ixesha lokupholisa phantsiukuwelda uxinzelelo (min)[p(0.10+0.01)N/ mm2 t≈1.2e+2min]/min | |
| 6.0-10.0 | 0.5 ~ 1.0 | 95-140 | I-USD 4.00 | 5 ～7 | 8.5-14 |
| 10.0-15.0 | 1.0-1.3 | 140 ~190 | I-USD 4.00 | 7; 9 | 14 ~ 19 |
| 15.0-20.0 | 1.3-1.7 | 190-240 | I-USD 5.00 | 9 ～11 | 19 ~ 25 |
| 20.0-25.0 | 1.7-2.0 | 240-290 | I-USD 5.00 | 11 ~ 13 | 25 ~ 32 |
Uthelekiso lweNkalo:
Umahluko kwiimveliso ze-U-PVC, i-PPH kunye ne-C-PVC kwiqondo lokushisa elisebenzayo kunye nendlela yokudibanisa
| Umahluko kwiimveliso ze-U-PVC, i-PPH kunye ne-C-PVC kwiqondo lokushisa elisebenzayo kunye nendlela yokudibanisa | |||
| Izinto eziphathekayo | Ubushushu bokusebenza obukhulu | Ubushushu bokusebenzisa rhoqo kufuneka bube ngezantsi | Idityaniswe ngu |
| UPVC | 60℃ | 45℃ (0~45℃) | Isamente |
| PPH | 110℃ | 90℃ (0~90℃) | Ukuwelda kwisokethi eshushu ye meld kunye nokuwelda ngeempundu |
| CPVC | 110℃ | 95℃ (0~95℃) | Isamente |
| PVDF | 200℃ | 150℃ (-30~150℃) | Ukuwelda kwisokethi eshushu ye meld kunye nokuwelda ngeempundu |
Zeziphi izicelo zoshishino zeevalvu zePVDF, izifakelo zemibhobho kunye nemibhobho?
1. Ishishini lemichiza:
Isetyenziswe ngokubanzi kwiinkqubo zeekhemikhali ezahlukeneyo kwinkqubo yokuhanjiswa kwamanzi, njengokuthutha i-asidi, izisombululo ze-alkali, i-oxidants, i-solvents kunye nezinye izinto ezinobungozi.
2. ISemiconductor kunye neshishini lombane:
Kwimeko yegumbi elicocekileyo lenkqubo yokuhanjiswa kwamanzi e-ultrapure, kunye nokugcinwa kweekhemikhali kunye nenkqubo yokusabalalisa njengeyona nto ikhethiweyo yokubhobhoza.
3. Ubunjineli bokhuseleko lokusingqongileyo:
Iivali ze-PVDF, izifakelo zemibhobho kunye nemibhobho isetyenziswa ngokubanzi ukuxhathisa ukuhlwa kunye nokuhambelana kwebhayoloji kunyango lwamanzi amdaka, ukukhutshwa kwetyuwa emanzini olwandle, kunye namanqanaba onyango lwangaphambili kunye nasemva konyango lweenkqubo zokubuyela umva kwe-osmosis membrane.
4. Amachiza kunye ne-biotechnology:
Kwinkqubo yemveliso ifuna ulawulo olungqongqo longcoliseko kunye nothintelo lwezihlandlo zokuzalanisa kwamagciwane, umbhobho wePVDF ngenxa yokucoceka kwawo okuphezulu, okungeyotyhefu nokunuka kakubi kwaye kusetyenziselwa ukuhambisa amanzi acocekileyo, amayeza aphakathi amayeza okanye ezinye izinto ezingamanzi.
5. Amandla kunye neshishini lenyukliya:
Ngenxa yokuxhathisa kwayo ngemitha kunye nokuxhathisa ubushushu obuphezulu, ikwasetyenziswa kwinkqubo yamanzi okupholisa yezinye iindawo zamandla enyukliya kunye nezinye izibonelelo zamandla.
Ngamafutshane, i-polyvinylidene fluoride piping iye yaba lolona khetho lufanelekileyo lwemibhobho kwizicelo ezininzi ezikumgangatho ophezulu kunye neziqatha ngenxa yokuxhathisa kwayo kwemichiza, ukomelela okuphezulu, ukumelana nobushushu obugqwesileyo kunye neempawu ezilungileyo zokugquma umbane.