Cellulose ether ndi mtundu wa polima ya molekyulu yopanda ionic. Ili ndi mitundu iwiri ya zinthu zosungunuka m'madzi komanso zosungunuka. Ili ndi zotsatira zosiyana m'mafakitale osiyanasiyana. Mwachitsanzo, mu zipangizo zomangira mankhwala, ili ndi zotsatira zotsatirazi: ①Chosungira madzi ②Chothira ③Kulinganiza ④Chopanga mafilimu ⑤Chomangirira; mu makampani a PVC, ndi chosungunula ndi chosungunula; mu makampani opanga mankhwala, ndi chomangirira ndipo Chifukwa cellulose ili ndi zotsatira zosiyanasiyana zophatikizana, ndiyenso chomwe chimagwiritsidwa ntchito kwambiri. Pansipa ndiyang'ana kwambiri pakugwiritsa ntchito ndi ntchito ya cellulose ethers mu zipangizo zomangira zosawononga chilengedwe.
1. Utoto wa latex
Mu makampani opanga utoto wa latex, hydroxyethyl cellulose iyenera kusankhidwa. Mafotokozedwe onse a kukhuthala ndi RT30000-50000cps, ndipo mlingo wofunikira nthawi zambiri umakhala pafupifupi 1.5‰-2‰. Ntchito yayikulu ya hydroxyethyl mu utoto wa latex ndikukhuthala, kupewa kufalikira kwa utoto, kuthandiza kufalikira kwa utoto, latex, ndi kukhazikika, ndipo imatha kusintha kukhuthala kwa zigawo ndikuthandizira magwiridwe antchito a kapangidwe kake: Hydroxyethyl Ethyl cellulose ndiyosavuta kugwiritsa ntchito. Itha kusungunuka m'madzi ozizira ndi madzi otentha, ndipo siyikhudzidwa ndi pH. Itha kugwiritsidwa ntchito pakati pa pH ya 2 ndi 12. Pali njira zitatu zotsatirazi:
I. Onjezani mwachindunji mu kupanga:
Njira iyi iyenera kusankha mtundu wa hydroxyethyl cellulose wochedwa - hydroxyethyl cellulose yokhala ndi nthawi yosungunuka yoposa mphindi 30. Njira zogwiritsira ntchito ndi izi: ① Onjezani madzi oyera pang'ono mu chidebe chokhala ndi agitator yodula kwambiri ② Yambani kusakaniza mosalekeza pa liwiro lotsika, ndipo nthawi yomweyo pang'onopang'ono komanso mofanana onjezani gulu la hydroxyethyl mu yankho ③ Pitirizani kusakaniza mpaka zinthu zonse za granular zitanyowa kudzera mu ④ Onjezani zina zowonjezera ndi zowonjezera za alkaline, ndi zina zotero. ⑤ Sakanizani mpaka magulu onse a hydroxyethyl atasungunuka kwathunthu, Onjezani zosakaniza zina mu Chinsinsicho ndikuzipera mpaka zitatha.
Ⅱ. Yokhala ndi mowa wotsekemera:
Njira iyi ingasankhe mtundu wa nthawi yomweyo, ndipo ili ndi mphamvu ya anti-mildew cellulose. Ubwino wa njira iyi ndikuti imakhala yosinthasintha kwambiri ndipo imatha kuwonjezeredwa mwachindunji ku utoto wa latex. Njira yokonzekera ndi yofanana ndi masitepe a ①–④.
Ⅲ. Pokonzekera zinthu zofanana ndi phala:
Popeza zosungunulira zachilengedwe ndi zosungunulira zopanda mphamvu (zosasungunuka) za magulu a hydroxyethyl, phala limatha kupangidwa ndi zosungunulirazi. Zosungunulira zachilengedwe zomwe zimagwiritsidwa ntchito kwambiri ndi zakumwa zachilengedwe zomwe zimapezeka mu utoto wa latex, monga ethylene glycol, propylene glycol ndi zopanga filimu (monga diethylene glycol butyl acetate). Porridge ya hydroxyethyl cellulose ikhoza kuwonjezeredwa mwachindunji ku utoto. Pitirizani kusakaniza mpaka itasungunuka kwathunthu.
2, kukanda putty pakhoma
Pakadali pano, putty yoteteza chilengedwe yomwe siigwiritsa ntchito madzi komanso yosakanizidwa m'mizinda yambiri m'dziko langa yakhala ikukondedwa ndi anthu. M'zaka zingapo zapitazi, chifukwa putty yopangidwa ndi guluu womanga imatulutsa mpweya wa formaldehyde ndikuwononga thanzi la anthu, guluu womanga umapangidwa ndi polima. Umakonzedwa ndi acetal reaction ya vinyl alcohol ndi formaldehyde. Chifukwa chake, zinthuzi zimachotsedwa pang'onopang'ono ndi anthu, ndipo zinthu za cellulose ether zimasinthidwa ndi zinthuzi, ndiko kuti, kupanga zipangizo zomangira zoteteza chilengedwe, cellulose ndiye chinthu chokhacho pakadali pano.
Mu putty yosalowa madzi, imagawidwa m'magulu awiri a putty wouma ndi putty phala. Pakati pa mitundu iwiri ya putty iyi, methyl cellulose yosinthidwa ndi hydroxypropyl methyl nthawi zambiri amasankhidwa. Ma specification a viscosity nthawi zambiri amakhala pakati pa 30000-60000cps. Ntchito zazikulu za cellulose mu putty ndi kusunga madzi, kugwirizana ndi mafuta.
Popeza ma formula a putty a opanga osiyanasiyana ndi osiyana, ena ndi imvi calcium, calcium yopepuka, simenti yoyera, ndi zina zotero, ndipo ena ndi ufa wa gypsum, imvi calcium, calcium yopepuka, ndi zina zotero, kotero ma formula awiriwa amasankha ma specifications a cellulose, kukhuthala ndi kulowa. Kuchuluka kwa zowonjezera ndi pafupifupi 2‰-3‰.
Popanga putty yokanda khoma, chifukwa pamwamba pa khoma pali madzi omwe amayamwa (mlingo woyamwa madzi pakhoma la njerwa ndi 13%, ndipo kuchuluka kwa madzi omwe amayamwa konkire ndi 3-5%), kuphatikiza ndi kutuluka kwa madzi kuchokera kunja, ngati putty itataya madzi mwachangu kwambiri, izi zingayambitse ming'alu kapena kuchotsa ufa ndi zochitika zina, zomwe zimapangitsa kuti putty ifooke. Pachifukwa ichi, kuwonjezera cellulose ether kudzathetsa vutoli. Koma ubwino wa filler, makamaka ubwino wa laimu calcium, nawonso ndi wofunikira kwambiri. Chifukwa cellulose ili ndi kukhuthala kwakukulu, imawonjezeranso kuyandama kwa putty, imapewa kugwa panthawi yomanga, ndipo imakhala yabwino komanso yopulumutsa ntchito ikatha kukanda.
3. Simenti yolimba
Mu matope a konkriti, kuti akwaniritse mphamvu yomaliza, simenti iyenera kukhala ndi madzi okwanira, makamaka nthawi yachilimwe, matope a konkriti amataya madzi mwachangu kwambiri, ndipo miyeso ya madzi okwanira imatengedwa kuti isunge ndikutsanulira madzi. Kutaya zinthu ndi ntchito yosasangalatsa, chofunikira ndichakuti madzi azikhala pamwamba pa nthaka yokha, ndipo madzi okwanira mkati sakukwanira, kotero yankho la vutoli ndikuwonjezera hydroxypropyl methyl cellulose kapena methyl cellulose ku konkriti ya konkriti. Kuchuluka kwa viscosity kuli pakati pa 20000–60000cps, kuchuluka kowonjezera ndi pafupifupi 2‰–3‰, ndipo kuchuluka kwa madzi kumatha kuwonjezeredwa kufika pa 85%. Njira yogwiritsira ntchito mu konkriti ya konkriti ndikusakaniza ufa wouma mofanana kenako ndikuwonjezera madzi.
4. Mu pulasitala wopaka pulasitiki, pulasitala womangirira ndi pulasitala wokhomerera
Chifukwa cha kukula kwa makampani omanga, anthu akufunikiranso zipangizo zatsopano zomangira zomwe zikuchulukirachulukira tsiku ndi tsiku. Chifukwa cha kuchuluka kwa chidziwitso cha anthu chokhudza kuteteza chilengedwe komanso kupititsa patsogolo ntchito yomanga, zinthu zopangidwa ndi gypsum zokhazikika zakula mofulumira. Pakadali pano, zinthu zodziwika kwambiri za gypsum ndi plastering gypsum, bonding gypsum, inlaying gypsum, tile glue ndi zina zotero.
Pulasitiki ya Stucco ndi mtundu wa zinthu zapamwamba kwambiri zomangira makoma ndi madenga amkati. Makoma omangiriridwa nayo ndi abwino komanso osalala, sataya ufa, amamangirira mwamphamvu ku substrate, alibe ming'alu kapena kugwa, ndipo amakana moto; pulasitiki yomangira ndi mtundu wa pulasitiki. Mtundu watsopano wa guluu wopepuka wa bolodi lomangira ndi chinthu chomata chopangidwa ndi gypsum ngati maziko ndikuwonjezera zowonjezera zosiyanasiyana. Ndi yoyenera kumangirira pakati pa zipangizo zosiyanasiyana zosapangidwa ndi organic. Sichimayambitsa poizoni, sichikoma, chili ndi makhalidwe a mphamvu yoyambirira, kukhazikika mwachangu komanso kumangirira mwamphamvu, ndipo ndi chinthu chothandizira pomanga matabwa omangira ndi mabuloko;
Zipangizo za gypsum izi zili ndi ntchito zosiyanasiyana, kuwonjezera pa ntchito ya gypsum ndi zodzaza zina, nkhani yaikulu ndi yakuti cellulose ether yowonjezera imagwira ntchito yotsogola. Popeza gypsum imagawidwa mu anhydrite ndi hemihydrate gypsum, gypsum zosiyanasiyana zimakhala ndi zotsatira zosiyana pa magwiridwe antchito azinthu, kotero kukhuthala, kusunga madzi ndi kuchedwa kumatsimikizira mtundu wa zipangizo zomangira gypsum. Vuto lofala la zipangizozi ndi kusweka kwa dzenje, ndipo mphamvu yoyamba siingatheke. Kuti tithetse vutoli, ndi vuto losankha mtundu wa cellulose ndi njira yogwiritsira ntchito composite ya retarder. Pachifukwa ichi, methyl kapena hydroxypropyl methyl 30000 nthawi zambiri imasankhidwa. -60000cps, kuchuluka kowonjezera kuli pakati pa 1.5‰–2‰, cholinga cha cellulose ndi kusunga madzi, kuchedwa ndi kudzola.
Komabe, sizingatheke kudalira cellulose ether ngati retarder, ndipo ndikofunikira kuwonjezera citric acid retarder kuti musakanize ndikugwiritsa ntchito kuti mphamvu yoyambirira isakhudzidwe.
Kuchuluka kwa madzi omwe amasungidwa nthawi zambiri kumatanthauza kutayika kwa madzi mwachibadwa popanda kuyamwa madzi akunja. Ngati khoma lili louma kwambiri, kuyamwa madzi ndi kusungunuka kwa madzi pansi pake kudzapangitsa kuti zinthuzo zitaye madzi mwachangu kwambiri, ndipo mabowo ndi ming'alu zidzachitikanso.
Njira yogwiritsira ntchito iyi imasakanizidwa ndi ufa wouma. Ngati yankho lakonzedwa, chonde onani njira yokonzekera yankho.
5. Chotetezera kutentha
Chotsukira kutentha ndi mtundu watsopano wa zinthu zotsukira kutentha mkati mwa khoma m'chigawo chakumpoto. Ndi zinthu zotsukira kutentha zomwe zimapangidwa ndi zinthu zotsukira kutentha, chotsukira ndi chomangira. Mu zinthuzi, cellulose imagwira ntchito yofunika kwambiri pakumangirira ndi kulimbitsa mphamvu. Nthawi zambiri sankhani methyl cellulose yokhala ndi kukhuthala kwakukulu (pafupifupi 10000eps), mlingo nthawi zambiri umakhala pakati pa 2‰-3‰), ndipo njira yogwiritsira ntchito ndi njira yosakaniza ufa wouma.
6. Wothandizira mawonekedwe
Chogwirizira cholumikizira ndi HPNC20000cps, ndipo guluu wa matailosi ndi woposa 60000cps. Mu chogwirizira cholumikizira, chimagwiritsidwa ntchito makamaka ngati chokhuthala, chomwe chingathandize kulimbitsa mphamvu yokoka ndi kukana mivi.
Nthawi yotumizira: Novembala-02-2022