Ease ntawm installation. Cov cuab yeej tseem ceeb uas feem ntau xav txog thaum xaiv cov yeeb nkab PVC yog lawv cov cua sov. Hauv tsab xov xwm no, peb yuav tshawb xyuas qhov kub ntawm cov kav dej PVC thiab yam uas tuaj yeem cuam tshuam rau nws.
PVC yeeb nkab Thaum tshav kub kub kuj
Lub tshav kub tsis kam ntawm cov kav dej PVC yog hais txog nws lub peev xwm los tiv thaiv qhov kub thiab txias ua ntej nws pib deform, tawg, lossis txhawb kev puas tsuaj. Cov kav dej PVC tuaj yeem tswj tau qhov kub thiab txias dua li lwm cov kav dej yas xws li polyethylene (PE) thiab polypropylene (PP). Cov kav dej PVC muaj qhov kub siab hloov pauv iav (Tg), uas yog qhov kub thiab txias uas nws hloov los ntawm ib qho nyuaj, iav lub xeev mus rau ib qho mos, rubbery.
Tg ntawm PVC yog nyob ib ncig ntawm 82 degrees Celsius (180 degrees Fahrenheit). Qhov no txhais tau hais tias cov kav dej PVC tuaj yeem tiv taus kub txog 82 degree yam tsis muaj deforming lossis tawg. Ntawm qhov kub siab tshaj Tg, cov kav dej PVC ua softer thiab hloov tau yooj yim, ua rau lawv yooj yim rau kev puas tsuaj lossis tsis ua haujlwm. Yog li ntawd, nws yog ib qho tseem ceeb uas yuav tsum xav txog qhov kub siab tshaj plaws ntawm cov kav dej PVC thaum tsim thiab txhim kho lawv hauv cov ntawv thov kub.
Cov yam ntxwv cuam tshuam rau PVC yeeb nkab Thaum tshav kub kub Resistance
Lub tshav kub tsis kam ntawm cov kav dej PVC tuaj yeem cuam tshuam los ntawm ntau yam uas tuaj yeem cuam tshuam rau lawv Tg thiab thermal stability. Cov hauv qab no yog qee yam uas tuaj yeem cuam tshuam qhov kub ntawm cov kav dej PVC:
1. Polymerization Degree:
Lub polymerization degree ntawm PVC tuaj yeem cuam tshuam nws cov cua sov. PVC nrog rau qib siab ntawm polymerization muaj ntau dua Tg, uas txhais tau tias nws tuaj yeem tiv taus qhov kub thiab txias dua yam tsis muaj deforming lossis tawg.
2. Plasticizer Cov ntsiab lus:
Cov kav dej PVC tuaj yeem muaj cov yas yas los txo lawv cov tawv nqaij thiab ua rau lawv hloov tau yooj yim. Txawm li cas los xij, lub xub ntiag ntawm plasticizers tuaj yeem txo Tg ntawm PVC, txo nws cov cua sov.
3. Kev laus:
Cov kav dej PVC tuaj yeem degrade dhau sijhawm vim raug cuam tshuam rau ib puag ncig xws li UV hluav taws xob, oxygen, thiab cua sov. Qhov degradation tuaj yeem ua rau txo qis hauv Tg ntawm PVC, ua rau nws yooj yim dua rau kev puas tsuaj lossis tsis ua haujlwm thaum raug kub siab.
4. Hydrolysis:
Cov kav dej PVC tuaj yeem raug hydrolysis thaum raug dej, chav dej, lossis dej noo. Hydrolysis tuaj yeem ua rau cov saw hlau PVC tawg, ua rau txo Tg thiab kub tsis kam ntawm PVC kav.
5. Tshuaj lom neeg:
Cov kav dej PVC tuaj yeem raug rau cov tshuaj uas tuaj yeem cuam tshuam nrog PVC polymer thiab txo nws cov Tg. Cov tshuaj xws li cov kua qaub, alkalis, thiab cov kuab tshuaj tuaj yeem cuam tshuam qhov kub ntawm cov kav dej PVC.
Daim ntawv thov yuav tsum tau ua kom muaj cua sov-ua haujlwm PVC yeeb nkab
Cov kav dej PVC feem ntau yog siv rau hauv ntau daim ntawv thov uas xav kom lawv tiv taus qhov kub thiab txias. Nov yog qee qhov kev siv uas feem ntau siv cov kav dej kub kub-tiv thaiv PVC:
1. Cov kav dej muaj:
Kev lag luam xws li tshuaj lom neeg, petrochemical, thiab roj thiab roj yuav tsum tau siv cov kav dej PVC uas tuaj yeem tuav cov kua dej kub thiab roj. Cov kav dej kub-kub PVC yog qhov tseem ceeb hauv kev txo qis kev pheej hmoo ntawm kev ua haujlwm tsis ua haujlwm, ua rau muaj kev sib tsoo.
2. Cov kav dej:
PVC kav dej yog ib qho kev xaiv rau cov kav dej vim lawv tsis kam tiv thaiv corrosion, yooj yim ntawm installation, thiab pheej yig. Cov kav dej kub-tiv thaiv PVC yog xav tau nyob rau hauv cov kav dej uas thauj cov dej kub lossis lwm cov kua dej kub.
3. Solar Energy Systems:
Cov kav dej PVC kuj tseem siv rau hauv lub hnub ci zog los thauj cov dej kub lossis lwm yam dej. High tshav kub-resistant PVC kav yuav tsum tau nyob rau hauv lub collector system, uas yog raug rau kub kub.
4. Geothermal Systems:
Geothermal systems siv cov kav dej PVC los thauj cov dej kub lossis chav dej los ntawm lub ntiaj teb pob zeb. High tshav kub-tiv taus PVC kav yuav tsum tau nyob rau hauv lub geothermal system lub tshav kub exchanger, uas yog raug rau kub kub.
Xaus
Hauv kev xaus, qhov kub tsis kam ntawm cov kav dej PVC yog ib qho khoom tseem ceeb uas yuav tsum tau txiav txim siab thaum xaiv cov khoom tsim nyog rau daim ntawv thov. Cov kav dej PVC tuaj yeem tiv taus qhov kub siab txog 82 degree ua ntej deforming lossis tawg. Txawm li cas los xij, yam xws li polymerization degree, cov ntsiab lus ntawm plasticizer, kev laus, hydrolysis, thiab tshuaj lom neeg tuaj yeem cuam tshuam rau cov cua sov ntawm cov kav dej PVC. Yog li ntawd, nws yog ib qho tseem ceeb los xaiv txoj cai ntawm cov yeeb nkab PVC uas tuaj yeem tiv taus cov ntawv thov tshwj xeeb kev ua haujlwm kub. Nrog rau kev xaiv thiab kev teeb tsa kom zoo, cov kav dej kub-resistant PVC tuaj yeem muab kev pabcuam ruaj khov thiab txhim khu kev qha hauv ntau daim ntawv thov kub kub ntau xyoo.
Hu rau
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