Qhov zoo ntawm txhuas-yas kav dej tuaj yeem suav nrog rau peb yam hauv qab no:
1. Ua tau zoo tshaj plaws kev nyiam huv: Sab hauv thiab txheej txheej ntawm cov yas-yas yeeb nkab yog ua los ntawm cov khoom tshwj xeeb polyethylene, uas yog huv thiab tsis muaj tshuaj lom. Qhov tseem ceeb tshaj plaws yog txheej nruab nrab ntawm cov raj yas-yas yog txhuas, uas tuaj yeem tsis tsuas yog thaiv lub teeb, tab sis tseem thaiv cov pa. Raws li peb txhua tus paub, ib puag ncig ntawm cov kab mob tsis zoo yuav tsum yog lub teeb thiab oxygen. Qhov nruab nrab txheej txheej ntawm txhuas-yas raj tiv thaiv kev cog qoob loo ntawm cov kab mob me me thiab algae, uas yog dhau qhov ncav cuag ntawm txhua lub raj yas. Lub raj yas tag nrho tsis yog tsuas yog ntxiv nrog cov tshuaj tiv thaiv kab mob loj los tiv thaiv kev puas tsuaj ntawm cov khoom, tab sis tseem muab rho tawm rau hauv cov dej khaws cia hauv cov raj xa dej, uas zoo li yuav ua rau muaj kuab paug dej, thiab vim tias lub raj yas tag nrho tsis muaj lub teeb - thiab cov khoom thaiv cov pa, nws yooj yim heev kom loj hlob cov kab mob. Qhov no ua rau muaj kuab paug thib ob ntawm cov dej tsis zoo.
2. Ua tau zoo tshaj thiab tiv taus qhov kub thiab txias: kev siv sij hawm ntev yog 95 degrees (50 xyoo, 1MPa), qhov siab tshaj plaws siv kub yog 110 degrees, thiab cov cua sov nthuav dav coefficient ntawm txhuas-yas yeeb nkab me me. Nws yog sib npaug rau cov cua sov nthuav dav coefficient ntawm txhuas, tsuas yog ib-rau ntawm tag nrho cov yas raj. Thaum raug qhov kub hloov pauv, qhov kev hloov pauv me me, thiab cov yeeb nkab txhuas-yas yog cov yoog raws tau yooj yim. Cov kav dej nws tus kheej tuaj yeem nqus qee qhov deformation yam tsis ua rau muaj cua sov nthuav dav thiab deformation ntawm cov raj xa dej. Qhov kub thiab txias tsis kam ntawm txhua lub raj yas yog qhov tsis zoo. Kev siv lub sijhawm ntev ntawm PPR tsuas yog 70 degrees (50 xyoo, IMPa), thiab qhov kub siab tshaj plaws siv yog 95 degrees. Nyob rau tib lub sijhawm, PPR cov raj xa dej muaj qhov nthuav dav loj, thiab thaum cov dej kub sab nraud (dej txias thiab dej kub) hloov pauv, muaj qhov hloov pauv loj loj. Vim tias PPR yeeb nkab yog cov yeeb nkab ncaj ncaj, nws tsis tuaj yeem zom cov deformation, yog li nws yooj yim ua rau cov kab ke khoov thiab hloov pauv lossis txawm tias xau.
3. Kev pab lub neej ntev: PE yas siv hauv cov yas-yas sib txuas cov yeeb nkab, cov qauv txheej txheem molecular (-CH2-CH2-) yog qhov ruaj khov ntawm cov yas, thiab txij li nruab nrab txheej txheej txheej ntawm txhuas-yas yeeb nkab cais tawm sab hauv thiab txheej txheej sab nrauv, txheej txheej yas tau tso cai ntxiv Cov stabilizer uas tuaj yeem tiv taus lub teeb thiab cov pa oxygen tsis muaj kev cuam tshuam rau kev huv ntawm txheej sab hauv hauv kev sib cuag nrog dej, yog li ua kom nws muaj kev tiv thaiv kev laus.
