1. Daim ntawv PVC yog dab tsi?
Daim ntawv PVC yog cov khoom siv polymer ua los ntawm vinyl chloride ua cov khoom siv raw, nrog rau cov stabilizers, roj nplua nyeem, thiab cov khoom sau ntxiv. Nws ua rau pom kev ua haujlwm antioxidant zoo heev, tiv taus cov kua qaub thiab cov tshuaj redox muaj zog, muaj zog, ruaj khov zoo heev, thiab tsis kub hnyiab, ua rau nws muaj peev xwm tiv taus kev puas tsuaj los ntawm kev hloov pauv huab cua. Cov ntawv PVC feem ntau muaj xws li pob tshab, dawb, dub, xim, thiab grey.
2. Cov txiaj ntsig ntawm daim ntawv PVC yog dab tsi?
Cov ntawv PVC muab ntau yam txiaj ntsig, suav nrog kev tiv taus corrosion, tsis kub hnyiab, cov khoom rwb thaiv tsev, thiab kev tiv taus oxidation. Tsis tas li ntawd, lawv tuaj yeem rov ua dua tshiab thiab muaj cov nqi tsim khoom qis. Vim lawv qhov kev hloov pauv tau yooj yim thiab pheej yig, lawv tau tuav txoj haujlwm hauv kev lag luam ntawv yas.
3. Cov ntawv PVC siv rau dab tsi?
Cov ntawv PVC muaj ntau yam siv tau, muaj ntau hom xws li cov ntawv PVC ntshiab, cov ntawv PVC frosted, cov ntawv PVC ntsuab, cov ntawv PVC yob, thiab lwm yam. Ua tsaug rau lawv cov kev ua tau zoo, cov nqi tsim khoom qis, kev tiv thaiv corrosion, thiab cov khoom rwb thaiv tsev, cov ntawv PVC feem ntau siv los tsim cov ntawv npog PVC, daim npav PVC, cov yeeb yaj kiab PVC tawv, thiab cov ntawv PVC tawv.
4. Cov qhov tsis zoo ntawm cov ntawv PVC yog dab tsi?
Daim ntawv PVC yog ib hom yas uas siv ntau ua los ntawm polyvinyl chloride, nrog rau cov plasticizers thiab antioxidants. Nws tsis muaj tshuaj lom rau nws tus kheej, tab sis cov khoom siv tseem ceeb, xws li plasticizers thiab antioxidants, yog lom. Cov plasticizers siv hauv cov ntawv PVC txhua hnub feem ntau suav nrog dibutyl terephthalate thiab dioctyl phthalate, ob qho tib si yog tshuaj lom. Cov tshuaj antioxidant lead stearate siv hauv PVC kuj yog tshuaj lom. Cov ntawv PVC uas muaj cov ntsev lead tuaj yeem tso cov lead thaum lawv kov cov kuab tshuaj xws li ethanol thiab ether. Cov ntawv PVC nrog cov antioxidants ua los ntawm lead qee zaum siv rau kev ntim khoom noj, tab sis thaum lawv kov cov khoom noj xws li cov khob cij kib, ncuav mog qab zib kib, ntses kib, nqaij siav, ncuav mog qab zib, thiab khoom noj txom ncauj, cov molecules lead tuaj yeem diffuse mus rau hauv cov roj. Yog li ntawd, cov hnab yas PVC yuav tsum tsis txhob siv rau kev tuav cov khoom noj, tshwj xeeb tshaj yog cov khoom noj roj. Tsis tas li ntawd, ntawm qhov kub siab dua li 50 ° C, cov khoom yas polyvinyl chloride maj mam decompose, tso cov roj hydrogen chloride, uas yog teeb meem rau kev noj qab haus huv.
5. Cov Ntawv PVC puas muaj kev nyab xeeb rau zaub mov?
Cov ntawv PVC tuaj yeem muaj kev nyab xeeb rau zaub mov, tab sis tsuas yog tias tsim nrog PVC qib zaub mov thiab cov khoom ntxiv uas ua raws li txoj cai. Cov ntawv PVC qib zaub mov tsis muaj tshuaj lom, tsis muaj ntxhiab, thiab tsim nyog rau kev sib cuag ncaj qha lossis ncaj qha rau zaub mov, nyob ntawm lawv cov qauv thiab kev siv. Cov ntawv PVC no muaj kev nyab xeeb rau zaub mov feem ntau siv rau hauv cov ntim khoom noj, cov pob blister, cov yeeb yaj kiab cling, cov tais zaub mov, thiab cov hau tiv thaiv.
Txawm li cas los xij, tsis yog txhua daim ntawv PVC suav tias yog zaub mov muaj kev nyab xeeb. Cov ntawv PVC qib kev lag luam yuav muaj cov yas lossis cov khoom ntxiv uas tsis tau pom zoo rau kev sib cuag zaub mov. Txhawm rau kom muaj kev nyab xeeb, ib txwm xyuas kom meej tias daim ntawv PVC ua raws li FDA thiab EU (EC) cov cai sib cuag zaub mov, thiab thov cov ntaub ntawv kev nyab xeeb ntawm cov khoom siv ntawm cov chaw tsim khoom.
6. Cov Ntawv PVC puas tiv taus hluav taws?
Yog lawm, cov ntawv PVC yog cov nplaim taws ntuj tsim piv rau ntau lwm cov yas. Ua tsaug rau lawv cov ntsiab lus chlorine siab, PVC yog nws tus kheej tua hluav taws thaum lub qhov hluav taws sab nraud raug tshem tawm, uas txo qhov hluav taws kis tau zoo heev.
Cov ntawv PVC feem ntau siv rau hauv cov ntawv thov uas kev nyab xeeb hluav taws yog qhov tseem ceeb, xws li cov ntaub ntawv tsim kho, phab ntsa vaj huam sib luag, hluav taws xob rwb thaiv tsev, cov paib, thiab cov chaw kaw khoom lag luam. Hauv ntau qhov xwm txheej, cov ntawv PVC tuaj yeem ua tau raws li cov qauv hluav taws thoob ntiaj teb xws li UL94 V-0 / V-1 lossis zoo sib xws, nyob ntawm cov qauv.
Rau cov haujlwm nrog cov qauv kev nyab xeeb hluav taws nruj, cov ntawv PVC nplaim taws nrog kev ua tau zoo dua tuaj yeem hloov kho kom ua tau raws li cov cai tsim kho thiab cov kev xav tau tiv thaiv hluav taws.
