Polyvinyl chloride (PVC) yog ib qho polymer ua los ntawm kev polymerization ntawm vinyl chloride monomer (VCM) nyob rau hauv qhov muaj cov initiators xws li peroxides thiab azo compounds lossis los ntawm lub tshuab ntawm cov dawb radical polymerization nyob rau hauv qhov kev ua ntawm lub teeb lossis cua sov. PVC yog ib qho khoom siv polymer uas siv cov chlorine atom los hloov cov hydrogen atom hauv polyethylene, thiab vinyl chloride homopolymers thiab vinyl chloride copolymers yog hu ua vinyl chloride resins.
Cov saw hlau PVC muaj cov chlorine atoms polar nrog cov zog intermolecular siab, uas ua rau cov khoom PVC tawv dua, tawv, thiab zoo rau kev kho tshuab, thiab muaj kev tiv thaiv hluav taws zoo heev (kev tiv thaiv hluav taws yog hais txog cov khoom uas ib yam khoom muaj lossis cov khoom siv muaj tom qab kev kho kom qeeb qhov kev sib kis ntawm hluav taws); txawm li cas los xij, nws cov dielectric tas mus li thiab dielectric poob lub kaum sab xis tangent tus nqi loj dua li cov ntawm PE.
Cov tshuaj PVC muaj cov khoom me me ntawm cov khoom sib txuas ob npaug, cov saw hlau thiab cov khoom seem pib uas tseem tshuav nyob rau hauv qhov kev sib xyaw ua ke, ntxiv rau cov chlorine thiab hydrogen atoms ntawm ob lub carbon atoms uas nyob ib sab, uas yooj yim dechlorinated, ua rau cov tshuaj tiv thaiv kev puas tsuaj ntawm PVC yooj yim nyob rau hauv qhov kev ua ntawm lub teeb thiab cua sov. Yog li ntawd, cov khoom PVC yuav tsum ntxiv cov khoom siv cua sov, xws li calcium-zinc heat stabilizer, barium-zinc heat stabilizer, lead salt heat stabilizer, organic tin stabilizer, thiab lwm yam.
Cov ntawv thov tseem ceeb
PVC muaj ntau hom sib txawv thiab tuaj yeem ua tiav ntau txoj hauv kev, suav nrog kev nias, extruding, txhaj tshuaj, thiab txheej. Cov yas PVC feem ntau siv rau hauv kev tsim cov yeeb yaj kiab, tawv tsiaj, rwb thaiv tsev ntawm cov xov hlau thiab cov cables, cov khoom ruaj khov, pem teb, rooj tog, cov khoom siv kis las, thiab lwm yam.
Cov khoom PVC feem ntau muab faib ua 3 pawg: tawv, ib nrab tawv thiab mos. Cov khoom tawv thiab ib nrab tawv raug ua tiav yam tsis muaj lossis nrog me ntsis ntawm cov yas, thaum cov khoom mos raug ua tiav nrog ntau cov yas. Tom qab ntxiv cov yas, qhov kub hloov iav tuaj yeem txo qis, uas ua rau nws yooj yim dua rau kev ua tiav ntawm qhov kub qis dua thiab ua rau muaj kev ywj pheej thiab kev ywj pheej ntawm cov saw hlau molecular, thiab ua rau nws muaj peev xwm ua cov khoom mos uas ywj pheej ntawm chav tsev kub.
1. Cov ntaub ntawv PVC
Feem ntau yog siv los ua qhov rooj thiab qhov rai thiab cov ntaub ntawv txuag hluav taws xob.
2. Cov kav dej PVC
Cov kav dej PVC muaj ntau yam, kev ua tau zoo heev thiab ntau yam kev siv, thiab nyob hauv txoj haujlwm tseem ceeb hauv kev ua lag luam.
3. Cov yeeb yaj kiab PVC
PVC tuaj yeem ua rau cov zaj duab xis pob tshab lossis xim ntawm qhov tuab tshwj xeeb los ntawm kev siv daim ntawv qhia hnub, thiab cov zaj duab xis tsim los ntawm txoj kev no hu ua zaj duab xis calendered. Cov khoom siv raw PVC granular kuj tuaj yeem raug tshuab rau hauv zaj duab xis siv cov tshuab tshuab pwm, thiab cov zaj duab xis tsim los ntawm txoj kev no hu ua zaj duab xis tshuab pwm. Cov zaj duab xis tuaj yeem siv rau ntau lub hom phiaj thiab tuaj yeem ua tiav rau hauv hnab, tsho tiv nag, ntaub pua rooj, ntaub thaiv qhov rais, cov khoom ua si inflatable, thiab lwm yam los ntawm kev txiav thiab cua sov-kaw. Cov zaj duab xis pob tshab dav tuaj yeem siv los tsim cov tsev cog khoom thiab cov tsev cog khoom yas, lossis siv ua cov zaj duab xis hauv pem teb.
4. Rooj tsavxwm PVC
Ntxiv nrog rau stabilizer, roj nplua nyeem thiab filler, thiab tom qab sib tov, PVC tuaj yeem raug extruded rau hauv ntau yam caliber kav dej tawv, cov kav dej zoo li tus thiab cov kav dej corrugated nrog extruder, thiab siv ua downpipe, yeeb nkab dej haus, hluav taws xob hlau casing lossis ntaiv ntaiv. Cov ntawv calendered yog overlapped thiab kub nias kom ua cov ntawv tawv ntawm ntau yam thicknesses. Cov ntawv tuaj yeem txiav rau hauv cov duab xav tau thiab tom qab ntawd welded nrog cua kub siv PVC vuam rods rau hauv ntau yam tshuaj-resistant tanks, ducts thiab thawv, thiab lwm yam.
5. Cov khoom mos mos PVC
Siv lub tshuab extruder, nws tuaj yeem raug extruded rau hauv cov hoses, cables, xov hlau, thiab lwm yam; siv lub tshuab txhaj tshuaj molding nrog ntau yam pwm, nws tuaj yeem ua rau hauv cov khau yas, cov khau hauv qab, cov khau khiab, cov khoom ua si, cov khoom siv hauv tsheb, thiab lwm yam.
6. Cov ntaub ntawv ntim khoom PVC
Cov khoom PVC rau kev ntim khoom feem ntau yog rau ntau yam thawv, zaj duab xis thiab daim ntawv tawv. Cov thawv PVC feem ntau yog tsim rau dej ntxhia, dej haus, lub raj mis tshuaj pleev ib ce, tab sis kuj rau kev ntim roj refined.
7. PVC siding thiab pem teb
PVC siding feem ntau yog siv los hloov aluminium siding, PVC pem teb vuas, tsuas yog ib feem ntawm PVC resin, cov khoom seem yog cov khoom siv rov ua dua tshiab, cov nplaum, cov khoom sau thiab lwm yam khoom, feem ntau yog siv rau hauv pem teb tshav dav hlau thiab lwm qhov chaw ntawm av tawv.
8. Cov khoom siv PVC
Cov khoom PVC tuaj yeem pom txhua qhov chaw hauv peb lub neej txhua hnub. PVC yog siv los ua ntau yam tawv cuav rau cov hnab nqa khoom, cov khoom ua si xws li pob tawb, pob ncaws pob thiab pob rugby. Nws kuj tseem siv los ua cov khaub ncaws thiab cov khoom siv tiv thaiv tshwj xeeb. Cov ntaub PVC rau cov khaub ncaws feem ntau yog cov ntaub nqus dej (tsis tas yuav muaj txheej) xws li ponchos, ris tsho menyuam yaus, lub tsho tawv cuav thiab ntau yam khau looj nag. PVC kuj tseem siv rau hauv ntau yam khoom ua si thiab kev lom zem xws li cov khoom ua si, cov ntaub ntawv thiab cov khoom ua si.
Lub sijhawm tshaj tawm: Lub Xya Hli-19-2023