Kev taw qhia khoom:
Cov dej ntws PVC-Uyeeb nkabsiv cov polyvinyl chloride resin ua cov khoom siv tseem ceeb, ntxiv cov khoom ntxiv tsim nyog, thiab tsim los ntawm kev ua extrusion. Nws yog cov khoom siv yeeb nkab ntws nrog cov thev naus laus zis paub tab thiab tau siv dav hauv tsev thiab txawv teb chaws. Cov khoom muaj qhov zoo ntawm lub neej ntev, tiv taus corrosion, thiab lwm yam, uas tsis muaj piv rau cov yeeb nkab hlau cam khwb cia; nws sib dua hauv kev tsim kho, yooj yim rau kev tuav thiab teeb tsa, thiab yooj yim rau kev txuas. Nws yog siv dav hauv kev tsim kho dej ntws, kev ntws tshuaj lom neeg, thiab kev ntws dej nag.

Nta:
Cov khoom no muaj qhov zoo ntawm lub neej ntev thiab kev tiv thaiv xeb zoo li cov kav dej hlau cam khwb cia; nws sib dua hauv kev tsim kho, yooj yim rau kev tuav thiab teeb tsa, thiab yooj yim rau kev txuas. Nws yog siv dav hauv kev tsim kho dej, kev tso dej tshuaj lom neeg, thiab kev tso dej nag.
1. Qhov tawv ntawm qhov chaw thiab lub zog tensile ntawm cov yeeb nkab zoo heev, thiab qhov kev nyab xeeb ntawmyeeb nkabsiab.
2. Tus nqi qis, lub neej ua haujlwm ntev, lub neej ua haujlwm ib txwm muaj peev xwm ncav cuag ntau dua 50 xyoo, tsis tas yuav tsum tau saib xyuas thiab kho tas li.
3. Cov kav dej muaj kev tiv thaiv xeb zoo heev rau cov kua qaub inorganic, alkalis, thiab ntsev. Nws yog qhov tsim nyog rau kev tso tawm cov dej phwj hauv kev lag luam thiab kev thauj mus los. Nws tsis xeb lossis nplai, yog li yuav tsis muaj xeb thiab ntsws sab hauv.
Nws tsis yooj yim rau raug thaiv, thiab phab ntsa sab nraud yuav tsis raug kuab paug vim yog xeb ntawmcov kav dej, xyuas kom meej tias lub tsev zoo nkauj.
4. Cov coefficient ntawm kev sib txhuam ntawm cov yeeb nkab me me, cov dej ntws du, tsis yooj yim raug thaiv, thiab kev saib xyuas me me.
5. Cov khoom siv muaj cov pa oxygen siab thiab nws tus kheej tua hluav taws.
6. Tus coefficient ntawm kev nthuav dav ntawm cov kav dej yog me me, thiab qhov ntau ntawm kev hloov pauv cuam tshuam los ntawm qhov kub thiab txias yog me me. Lub thermal conductivity thiab elastic modulus yog me me, thiab kev ua haujlwm tiv thaiv kev khov zoo dua li ntawm cov kav dej ntws hlau cam khwb cia.
7. Cov kav dej thiab cov khoom siv sib txuas ua ke los ntawm kua nplaum, txoj kev tsim kho yooj yim, kev ua haujlwm yooj yim, thiab kev ua haujlwm teeb tsa zoo heev.
8. Nws tsis muaj tshuaj lom, tsis muaj cov ntsev txhuas lom thiab lwm yam tshuaj lom, thiab tsis ua rau tib neeg lub cev puas tsuaj.