Cellulose ether ndi mtundu wa polima wosakhala wa ionic semi-synthetic high molecular polymer. Lili ndi mitundu iwiri ya zinthu zosungunuka m'madzi komanso zosungunulira. Zili ndi zotsatira zosiyana m'mafakitale osiyanasiyana. Mwachitsanzo, mu zomangira mankhwala, zimakhala ndi zotsatirazi: ①Kusunga madzi ②Thickener ③Leveling ④Film-forming ⑤Binder; mu makampani PVC, ndi emulsifier ndi dispersant; m'makampani opanga mankhwala, ndi binder ndipo Chifukwa cha cellulose imakhala ndi zotsatira zosiyanasiyana, imagwiritsidwanso ntchito kwambiri. Pansipa ndimayang'ana kwambiri kugwiritsa ntchito ndi ntchito ya ma cellulose ethers muzomangamanga zomwe zimagwirizana ndi chilengedwe.
1. Mu utoto wa latex
M'makampani opanga utoto wa latex, hydroxyethyl cellulose iyenera kusankhidwa. Matchulidwe ambiri a mamasukidwe akayendedwe ndi RT30000-50000cps, ndipo mlingo wotchulidwa nthawi zambiri ndi 1.5 ‰-2 ‰. Ntchito yaikulu ya hydroxyethyl mu utoto wa latex ndi kukhuthala, kuteteza pigment gelation, kuthandizira kubalalitsidwa kwa pigment, latex, ndi kukhazikika, ndipo imatha kupititsa patsogolo kukhuthala kwa zigawo ndikuthandizira kuti ntchito yomanga ipangidwe: Hydroxyethyl ethyl cellulose ndiyosavuta kugwiritsa ntchito. Ikhoza kusungunuka m'madzi ozizira ndi madzi otentha, ndipo sichikhudzidwa ndi pH mtengo. Itha kugwiritsidwa ntchito pakati pa pH ya 2 ndi 12. Pali njira zitatu izi:
I. Onjezani mwachindunji pazopanga:
Njira imeneyi ayenera kusankha hydroxyethyl mapadi anachedwa mtundu - hydroxyethyl mapadi ndi kuvunda nthawi ya mphindi 30. Masitepe ogwiritsira ntchito ndi awa: ① Onjezani madzi enaake mumtsuko wokhala ndi chowotcha chometa ubweya wambiri ② Yambani kuyambitsa mosalekeza pa liwiro lotsika, ndipo nthawi yomweyo pang'onopang'ono ndikuwonjezera gulu la hydroxyethyl mu yankho ③ Pitirizani kuyambitsa. mpaka zida zonse za granular zinyowetsedwa ④ Onjezani zowonjezera ndi zina zamchere, ndi zina zotero. ⑤ Sakanizani mpaka zonse Magulu a hydroxyethyl asungunuka kwathunthu, Onjezani zotsalira zonse mu Chinsinsi ndikugaya mpaka mutamaliza.
Ⅱ. Zokhala ndi mowa wamayi:
Njirayi imatha kusankha mtundu wanthawi yomweyo, ndipo imakhala ndi anti-mildew cellulose. Ubwino wa njirayi ndikuti umakhala ndi kusinthasintha kwakukulu ndipo ukhoza kuwonjezeredwa mwachindunji ku utoto wa latex. Njira yokonzekera ndi yofanana ndi masitepe a ①–④.
Ⅲ. Kukonzekera zinthu monga phala:
Popeza organic solvents ndi osauka solvents (insoluble) kwa magulu hydroxyethyl, porridges akhoza kupangidwa ndi zosungunulira izi. Zosungunulira zomwe zimagwiritsidwa ntchito kwambiri ndi zakumwa zamadzimadzi zomwe zimapangidwa ndi utoto wa latex, monga ethylene glycol, propylene glycol ndi zojambula zamafilimu (monga diethylene glycol butyl acetate). Phala la hydroxyethyl cellulose likhoza kuwonjezeredwa mwachindunji ku utoto. Pitirizani kusonkhezera mpaka kusungunuka kwathunthu.
2, kukwapula khoma putty
Pakalipano, putty wokonda zachilengedwe yemwe ndi wosamva madzi komanso wosamva zotupa m'mizinda yambiri m'dziko langa wakhala akuyamikiridwa kwambiri ndi anthu. M'zaka zingapo zapitazi, chifukwa putty yopangidwa ndi guluu yomanga imatulutsa mpweya wa formaldehyde ndikuwononga thanzi la anthu, guluu womangayo amapangidwa ndi polima Amakonzedwa ndi momwe acetal amachitira ndi mowa wa vinyl ndi formaldehyde. Choncho, nkhaniyi imachotsedwa pang'onopang'ono ndi anthu, ndipo mankhwala a cellulose ether amasinthidwa ndi zinthu izi, kutanthauza kuti, chitukuko cha zipangizo zomangira zachilengedwe, mapadi ndi zinthu zokhazokha pakalipano.
Mu putty wosamva madzi, imagawidwa kukhala ufa wouma ndi putty phala. Mwa mitundu iwiri iyi ya putty, methyl cellulose yosinthidwa ndi hydroxypropyl methyl nthawi zambiri amasankhidwa. Mawonekedwe a viscosity nthawi zambiri amakhala pakati pa 30000-60000cps. Ntchito zazikulu za cellulose mu putty ndikusunga madzi, kugwirizana ndi kudzoza.
Popeza mitundu ya putty ya opanga osiyanasiyana ndi yosiyana, ena ndi imvi kashiamu, kashiamu wopepuka, simenti yoyera, etc., ndipo ena ndi gypsum ufa, imvi kashiamu, kashiamu wopepuka, etc. . Kuchuluka kowonjezera ndi pafupifupi 2 ‰-3 ‰.
Pakumanga khoma la putty, chifukwa pansi pakhoma pali mayamwidwe ena amadzi (mayamwidwe amadzi a khoma la njerwa ndi 13%, komanso kuyamwa kwamadzi kwa konkire ndi 3-5%), kuphatikiza kuphulika kwa dziko lakunja, ngati putty itaya madzi mofulumira kwambiri, idzayambitsa ming'alu kapena kuchotsedwa kwa ufa ndi zochitika zina, potero kufooketsa mphamvu ya putty. Pachifukwa ichi, kuwonjezera pa cellulose ether kudzathetsa vutoli. Koma khalidwe la filler, makamaka khalidwe laimu calcium, ndi zofunika kwambiri. Chifukwa cellulose imakhala ndi kukhuthala kwakukulu, imathandiziranso kusungunuka kwa putty, imapewa kugwa pakanthawi yomanga, ndipo imakhala yabwino komanso yopulumutsa ntchito ikatha.
3. Dongo la konkire
Mu matope a konkire, kuti akwaniritse mphamvu zomaliza, simenti iyenera kukhala ndi madzi okwanira, makamaka pomanga chilimwe, matope a konkire amataya madzi mofulumira kwambiri, ndipo miyeso ya hydration yathunthu imatengedwa kuti ikhalebe ndi kuwaza madzi. Kuwonongeka kwazinthu ndi ntchito yovuta, chinsinsi ndi chakuti madzi ali pamtunda, ndipo hydration yamkati ikadali yosakwanira, choncho njira yothetsera vutoli ndikuwonjezera hydroxypropyl methyl cellulose kapena methyl cellulose ku konkire yamatope. Mapangidwe a mamasukidwe akayendedwe ali pakati pa 20000-60000cps, kuchuluka kwake kuli pafupifupi 2 ‰-3 ‰, ndipo kuchuluka kwa kusungirako madzi kumatha kuonjezedwa kupitilira 85%. Njira yogwiritsira ntchito konkire yamatope ndikusakaniza ufa wouma mofanana ndikuwonjezera madzi.
4. Pa pulasitala pulasitala, kugwirizana pulasitala ndi caulking pulasitala
Ndi chitukuko chofulumira cha ntchito yomanga, kufunikira kwa anthu kwa zomangira zatsopano kukukulirakuliranso tsiku ndi tsiku. Chifukwa chakuchulukirachulukira kwa anthu pakuzindikira zachitetezo cha chilengedwe komanso kuwongolera mosalekeza kwa zomangamanga, zida za simenti za gypsum zakula mwachangu. Pakali pano, mankhwala ambiri gypsum ndi pulasitala gypsum, kugwirizana gypsum, inlaying gypsum, matailosi zomatira ndi zina zotero.
pulasitala wa stucco ndi mtundu wapamwamba kwambiri wa pulasitala wamkati wamakhoma ndi madenga. Makoma opangidwa ndi izo ndi abwino komanso osalala, osagwetsa ufa, amamangiriza mwamphamvu ku gawo lapansi, alibe kusweka ndi kugwa, ndipo amakhala ndi moto; kulumikiza pulasitala ndi mtundu wa pulasitala. Mtundu watsopano wa zomatira zama board opepuka ndi zinthu zomata zopangidwa ndi gypsum ngati maziko ndikuwonjezera zowonjezera zosiyanasiyana. Ndizoyenera kulumikizana pakati pa zida zosiyanasiyana zomanga khoma. Sichiwopsezo, chosakoma, chimakhala ndi mphamvu zoyambira, kukhazikika mwachangu komanso kulumikizana mwamphamvu, ndipo ndi chinthu chothandizira pomanga matabwa ndi midadada;
Zogulitsa za gypsumzi zimakhala ndi ntchito zosiyanasiyana, kuphatikizapo ntchito ya gypsum ndi zowonjezera zowonjezera, nkhani yaikulu ndi yakuti chowonjezera cha cellulose ether chothandizira chimakhala ndi gawo lotsogolera. Popeza gypsum amagawidwa mu anhydrite ndi hemihydrate gypsum, osiyana gypsum ndi zotsatira zosiyana pa ntchito mankhwala, kotero thickening, posungira madzi ndi retardation kudziwa khalidwe la gypsum zomangira. Vuto lodziwika bwino la zidazi ndikung'amba kopanda kanthu, ndipo mphamvu zoyambira sizingafikire. Kuti athetse vutoli, ndi vuto losankha mtundu wa cellulose ndi njira yogwiritsira ntchito composite ya retarder. Pachifukwa ichi, methyl kapena hydroxypropyl methyl 30000 nthawi zambiri amasankhidwa. -60000cps, kuchuluka kwake kuli pakati pa 1.5 ‰-2 ‰, cholinga cha cellulose ndikusunga madzi, kuchedwetsa komanso kudzoza.
Komabe, sizingatheke kudalira cellulose ether monga retarder, ndipo m'pofunika kuwonjezera citric acid retarder kusakaniza ndi kuigwiritsa ntchito kuti mphamvu yoyamba isasokonezedwe.
Kuchulukirachulukira kwamadzi nthawi zambiri kumatanthauza kutayika kwachilengedwe kwamadzi pakapanda kuyamwa kwamadzi kunja. Ngati khomalo ndi louma kwambiri, kuyamwa kwamadzi ndi kutuluka kwachilengedwe pamtunda kumapangitsa kuti zinthuzo ziwonongeke msanga, ndipo kung'ambika ndi kung'ambika kudzachitikanso.
Njira yogwiritsira ntchitoyi imasakanizidwa ndi ufa wouma. Ngati yankho lakonzedwa, chonde onani njira yokonzekera yankho.
5. Mtondo wa insulation
Thermal insulation mortar ndi mtundu watsopano wamkati wamkati wamatenthedwe otenthetsera zida kudera lakumpoto. Ndi khoma lazinthu zopangidwa ndi zinthu zotenthetsera zotentha, matope ndi binder. Pankhani iyi, cellulose imagwira ntchito yofunika kwambiri pakulumikizana ndikuwonjezera mphamvu. Nthawi zambiri sankhani methyl cellulose yokhala ndi mamasukidwe apamwamba (pafupifupi 10000eps), mlingo nthawi zambiri umakhala pakati pa 2 ‰ -3 ‰), ndipo njira yogwiritsira ntchito ndi njira yowuma yosakaniza ufa.
6. Interface wothandizira
Wothandizira mawonekedwe ndi HPNC20000cps, ndipo zomatira matailosi ndizoposa 60000cps. Mu mawonekedwe othandizira, amagwiritsidwa ntchito makamaka ngati thickener, omwe amatha kusintha mphamvu zamakokedwe komanso kukana muvi.
Nthawi yotumiza: Nov-02-2022