1)Daim ntawv thov tseem ceeb ntawm cov khoom siv hauv tsev qib cellulose ether
Lub teb ntawm cov khoom siv hauv kev tsim kho yog qhov kev thov tseem ceeb ntawmcellulose ether. Cellulose ether muaj cov khoom zoo heev xws li thickening, dej khaws cia, thiab retardation, yog li nws yog dav siv los txhim kho thiab optimize npaj-mixed mortar (xws li ntub-mixed mortar thiab qhuav-mixed mortar), PVC resin manufacturing, latex xim, putty, pobzeb nplaum. Kev ua tau zoo ntawm cov khoom siv hauv tsev suav nrog thermal insulation mortar thiab cov ntaub ntawv hauv pem teb ua rau lawv ua tau raws li qhov yuav tsum tau ntawm kev txuag hluav taws xob thiab kev tiv thaiv ib puag ncig, txhim kho kev tsim kho ntawm cov tsev thiab kho kom zoo nkauj, thiab yog indirectly siv rau masonry plastering kev tsim kho thiab sab hauv thiab sab nraud phab ntsa kho kom zoo nkauj ntawm ntau hom kev tsim kho. Vim yog qhov loj ntawm kev nqis peev hauv kev tsim kho engineering, ntau hom kev tsim kho projects tau dispersed, muaj ntau hom, thiab kev nce qib ntawm kev tsim kho sib txawv heev, cov khoom siv hauv tsev qib cellulose ether muaj cov yam ntxwv ntawm ntau yam kev siv, kev thov loj hauv kev lag luam, thiab cov neeg siv khoom tawg.
Ntawm cov qauv nruab nrab thiab qib siab ntawm cov khoom siv hauv tsev HPMC, cov khoom siv hauv tsev HPMC nrog qhov kub gel ntawm 75 ° C feem ntau yog siv rau hauv cov av sib xyaw qhuav thiab lwm qhov chaw. Nws muaj zog tiv taus kub siab thiab zoo rau kev siv. Nws qhov kev ua tau zoo ntawm daim ntawv thov yog qhov kub gel Nws tsis tuaj yeem hloov los ntawm cov khoom siv hauv tsev HPMC ntawm 60 ° C, thiab cov neeg siv khoom siab muaj cov kev xav tau siab dua ntawm kev ruaj khov zoo ntawm hom khoom no. Tib lub sijhawm, nws nyuaj rau tsim HPMC nrog qhov kub gel ntawm 75 ° C. Qhov ntsuas peev txheej ntawm cov khoom siv tsim khoom loj, thiab qhov nkag mus rau qhov siab. Tus nqi ntawm cov khoom yog siab dua li ntawm cov khoom siv hauv tsev HPMC nrog qhov kub gel ntawm 60 ° C.
Cov khoom siv tshwj xeeb rau PVC HPMC yog ib qho khoom siv tseem ceeb rau kev tsim cov PVC. Txawm hais tias HPMC ntxiv rau hauv qhov me me thiab suav nrog feem pua ntawm cov nqi tsim khoom PVC tsawg, cov txiaj ntsig ntawm kev siv cov khoom zoo, yog li nws cov kev xav tau zoo yog siab. Muaj ob peb lub tuam txhab tsim khoom hauv tsev thiab txawv teb chaws ntawm HPMC rau PVC, thiab tus nqi ntawm cov khoom xa tuaj txawv teb chaws siab dua li cov khoom hauv tsev.
2)Kev Txhim Kho ntawm Kev Lag Luam Khoom Siv Hauv Tsev Qib Cellulose Ether
①Kev txhim kho ruaj khov ntawm kuv lub teb chaws kev tsim kho kev lag luam txuas ntxiv tsav tsheb qhov kev thov ua lag luam rau cov khoom siv hauv tsev cellulose ether
Raws li cov ntaub ntawv tshaj tawm los ntawm Lub Chaw Haujlwm Saib Xyuas Kev Txheeb Xyuas Hauv Tebchaws, xyoo 2021, kuv lub tebchaws tus nqi kev loj hlob hauv nroog (qhov feem pua ntawm cov pej xeem hauv nroog hauv cov pej xeem hauv tebchaws) yuav ncav cuag 64.72%, nce 0.83 feem pua piv rau thaum kawg ntawm xyoo 2020, thiab nce piv rau tus nqi kev loj hlob hauv nroog ntawm 49.95% hauv xyoo 2010. 14.77 feem pua, qhia tias kuv lub tebchaws tau nkag mus rau theem nruab nrab thiab theem kawg ntawm kev loj hlob hauv nroog. Ib yam li ntawd, kev loj hlob ntawm tag nrho cov kev thov hauv kev lag luam vaj tsev hauv tsev kuj tau nkag mus rau theem ruaj khov, thiab qhov sib txawv ntawm kev thov hauv ntau lub nroog tau pom tseeb dua. Kev thov vaj tse txuas ntxiv mus ntxiv. Yav tom ntej, nrog rau kev poob qis ntawm qhov feem pua ntawm kuv lub tebchaws kev lag luam tsim khoom thiab kev nce ntawm qhov feem pua ntawm kev lag luam kev pabcuam, kev nce ntawm cov qauv kev ua haujlwm yooj ywm xws li kev tsim kho tshiab thiab kev ua lag luam, thiab kev txhim kho cov qauv chaw ua haujlwm yooj ywm, cov kev xav tau tshiab yuav raug muab tso rau pem hauv ntej rau kev lag luam hauv nroog, qhov chaw nyob thiab kev sib npaug ntawm kev ua haujlwm-tsev nyob. Cov khoom lag luam vaj tsev cov kev xav tau ntawm kev lag luam yuav muaj ntau yam sib txawv, thiab kev lag luam vaj tsev hauv tsev thiab kev lag luam kev tsim kho tau nkag mus rau lub sijhawm hloov pauv thiab hloov pauv.
Qhov kev nqis peev ntawm kev lag luam kev tsim kho, thaj chaw tsim kho vaj tse, thaj chaw ua tiav, thaj chaw kho kom zoo nkauj thiab nws cov kev hloov pauv, cov nyiaj tau los ntawm cov neeg nyob hauv thiab cov cwj pwm kho kom zoo nkauj, thiab lwm yam, yog cov yam tseem ceeb uas cuam tshuam rau kev thov kev lag luam hauv tsev rau cov khoom siv hauv tsev. Cov txheej txheem ntawm kev loj hlob hauv nroog muaj feem cuam tshuam nrog. Txij xyoo 2010 txog 2021, kuv lub teb chaws txoj kev ua tiav kev nqis peev hauv vaj tse thiab cov txiaj ntsig ntawm kev lag luam tsim kho tau tswj hwm qhov kev loj hlob ruaj khov. Xyoo 2021, kuv lub teb chaws txoj kev ua tiav kev nqis peev hauv kev tsim kho vaj tse yog 14.76 trillion yuan, nce ntxiv 4.35% txhua xyoo; tag nrho cov txiaj ntsig ntawm kev lag luam tsim kho yog 29.31 trillion yuan, nce ntxiv 11.04% txhua xyoo.
Txij xyoo 2011 txog 2021, qhov nruab nrab txhua xyoo kev loj hlob ntawm thaj chaw tsim vaj tsev hauv kev lag luam tsim kho hauv kuv lub teb chaws yog 6.77%, thiab qhov nruab nrab txhua xyoo kev loj hlob ntawm thaj chaw tsim kho ntawm kev ua tiav vaj tsev yog 0.91%. Xyoo 2021, thaj chaw tsim kho vaj tsev ntawm kuv lub teb chaws kev lag luam tsim kho yuav yog 9.754 billion square meters, nrog rau kev loj hlob txhua xyoo ntawm 5.20%; thaj chaw tsim kho tiav yuav yog 1.014 billion square meters, nrog rau kev loj hlob txhua xyoo ntawm 11.20%. Qhov kev loj hlob zoo ntawm kev lag luam tsim kho hauv tsev yuav ua rau muaj kev siv cov khoom siv hauv tsev xws li cov tshuaj mortar sib xyaw, PVC resin manufacturing, latex xim, putty, thiab vuas nplaum, yog li tsav tsheb kev xav tau ntawm kev ua lag luam rau cov khoom siv hauv tsev qib cellulose ether.
②Lub teb chaws nquag txhawb nqa cov ntaub ntawv tsim kho ntsuab uas sawv cev los ntawm cov mortar sib xyaw ua ke, thiab qhov chaw tsim kho kev lag luam ntawm cov khoom siv hauv tsev cellulose ether tau nthuav dav ntxiv.
Cov tshuaj mortar yog ib yam khoom siv los ua cov cib. Nws muaj ib feem ntawm cov xuab zeb thiab cov khoom siv los ua cov khoom siv (cement, lime paste, av nplaum, thiab lwm yam) thiab dej. Txoj kev siv cov tshuaj mortar ib txwm yog kev sib tov hauv qhov chaw, tab sis nrog kev nce qib ntawm kev lag luam kev tsim kho thiab kev txhim kho ntawm cov kev cai tsim kho tshiab, qhov tsis zoo ntawm kev sib tov tshuaj mortar hauv qhov chaw tau dhau los ua qhov tseem ceeb, xws li qhov zoo tsis ruaj khov, pov tseg cov ntaub ntawv ntau, ib hom tshuaj mortar, qib qis ntawm kev tsim kho tshiab thiab ua rau ib puag ncig tsis huv, thiab lwm yam.
Piv nrog rau cov tshuaj mortar sib tov hauv tsev, cov txheej txheem ntawm cov tshuaj mortar sib tov yog kev sib tov ua ke, kev thauj mus los kaw, kev thauj mus los ntawm cov yeeb nkab twj, kev txau tshuab rau ntawm phab ntsa, thiab cov yam ntxwv ntawm cov txheej txheem ntawm kev sib tov ntub nws tus kheej, uas txo qhov tsim cov hmoov av thiab yooj yim rau kev tsim kho tshuab. Yog li ntawd, cov tshuaj mortar sib tov muaj qhov zoo ntawm kev ruaj khov zoo, ntau yam khoom, ib puag ncig zoo rau kev tsim kho, txuag hluav taws xob thiab txo kev siv, thiab muaj txiaj ntsig zoo rau kev lag luam thiab ib puag ncig. Txij li xyoo 2003, lub xeev tau tshaj tawm ntau cov ntaub ntawv tseem ceeb los txhawb kev tsim khoom thiab kev siv cov tshuaj mortar sib tov thiab txhim kho tus qauv kev lag luam tshuaj mortar sib tov.
Tam sim no, kev siv cov tshuaj mortar uas tau sib xyaw ua ke es tsis siv cov tshuaj mortar uas tau sib xyaw ua ke hauv tsev tau dhau los ua ib txoj hauv kev tseem ceeb los txo cov pa phem PM2.5 hauv kev lag luam tsim kho. Yav tom ntej, nrog rau qhov tsis muaj xuab zeb thiab pob zeb ntau ntxiv, tus nqi ntawm kev siv xuab zeb ncaj qha rau ntawm qhov chaw tsim kho yuav nce ntxiv, thiab kev nce nqi ntawm cov nqi ua haujlwm yuav ua rau tus nqi siv cov tshuaj mortar uas tau sib xyaw ua ke hauv tsev nce ntxiv, thiab qhov kev thov rau cov tshuaj mortar uas tau sib xyaw ua ke hauv kev lag luam tsim kho yuav txuas ntxiv mus. Tus nqi ntawm cov khoom siv hauv tsev qib cellulose ether hauv cov tshuaj mortar uas tau sib xyaw ua ke feem ntau yog li ntawm 2/10,000. Kev ntxiv cellulose ether pab ua kom cov tshuaj mortar uas tau sib xyaw ua ke tuab, khaws dej thiab txhim kho kev ua haujlwm tsim kho. Qhov kev nce ntxiv kuj tseem yuav tsav kev loj hlob ntawm kev thov rau cov khoom siv hauv tsev qib cellulose ether.
Lub sijhawm tshaj tawm: Plaub Hlis-25-2024