Txoj Kev Txhim Kho ntawm PPR Yeeb Nkab
PPR yeeb nkab yog cov yeeb nkab uas nquag siv. PPR yog ua los ntawm random copolymer polypropylene raws li cov khoom siv hauv paus tom qab kev kho mob. Piv nrog rau lwm yam polypropylene, nws muaj cov khoom siv kho tshuab zoo dua, muaj zog tensile ntau zog thiab cuam tshuam tsis kam. Nws yog ib qho khoom siv zoo heev rau cov kav dej kub xa khoom. ppr dej yeeb nkab yog tsis muaj tshuaj lom thiab huv si, yooj yim rau nruab, thiab muaj tshuaj lom neeg zoo. Tshwj xeeb, nws muaj kev ua haujlwm zoo thermal vuam. Cov molecules thiab cov molecules ntawm qhov kev sib txuas yog kev sib xyaw ua ke, uas daws qhov teeb meem ntawm cov dej xau ntawm cov yeeb nkab kev sib txuas uas tau ua rau muaj kev puas tsuaj rau kev lag luam dej rau lub sijhawm ntev. Yuav tau siv dav.
Hauv xyoo tas los no, qhov nruab nrab txhua xyoo nce hauv kev siv cov kav dej ppr hauv Tebchaws Europe yog ntau dua 15%. Tam sim no, ntau dua 80% ntawm cov kav dej hauv tsev siv cov kav dej ppr. Raws li txoj kev loj hlob ntawm lub domestic PPR yeeb nkab kev lag luam, raws li lub" Kaum tsib-xyoo Plan ntawm lub National Chemical Building Materials Industry thiab cov txheej txheem ntawm 2012 Development Plan", los ntawm 2005, lub Kev sib koom ntawm cov kav dej yas hauv ntau lub khw muag khoom yuav ncav cuag ntau dua 50%, ntawm qhov kev tsim kho cov kav dej yas siv rau 60% ntawm cov dej kub thiab txias thiab cov kav dej kub. Los ntawm 2012, qhov kev faib ua feem tau nce mus rau 80%. Raws li kev kwv yees, los ntawm 2005 txog 2015, kuv lub teb chaws' qhov nruab nrab txhua xyoo thov rau cov kav dej txias hauv tsev yog li 500 lab meters, thiab qhov kev thov rau cov kav dej kub yog li 200 lab meters. Tsis tas li ntawd, ntxiv rau kev rov ua dua tshiab ntawm cov kav dej kub thiab txias hauv tsev so thiab kev tsim kho cov kav dej, qhov kev thov txhua xyoo rau cov kav dej yog kwv yees li 1.5 billion meters. kuv lub teb chaws' lub tuam tsev tsim kho tau coj cov kav dej ppr ua thawj cov khoom lag luam ntawm peb cov kav dej yas tshiab los txhawb. Nws yog qhov pom tau tias PPR raj yuav loj hlob sai hauv peb lub tebchaws, thiab nws lub peev xwm ua lag luam loj heev. Tab sis tom qab txoj kev vam meej ntawm lub tsev kawm ntawv PPR, muaj teeb meem uas tsis tuaj yeem tsis quav ntsej.
