Nthawi yomweyo, imatha kupititsa patsogolo mphamvu yokakamiza komanso mphamvu yodulaHPMC hydroxypropyl methyl cellulose, kupititsa patsogolo zotsatira zenizeni za zomangamanga za uinjiniya, kupititsa patsogolo magwiridwe antchito. HPMC hydroxypropyl methyl cellulose imatha kukonza mphamvu yomatira ya ufa wa putty, kuchepetsa momwe imayimitsidwira, kuti iwonetsetse kuti zomangamanga za uinjiniya zikuyenda bwino. Hydroxypropyl methyl cellulose imatha kuwonjezera nthawi yogwirira ntchito ndikuthana ndi vuto la mphamvu yolimba yoyambira yopanda kanthu komanso yosakwanira pakumanga kwa uinjiniya.
Kugwira ntchito bwino kwa matope omangira uinjiniya ndi matope omangira madzi kumatha kupanga konkriti wosakanikirana mokwanira, ndipo mwachionekere kumatha kuwonjezera mphamvu yomangira ya matope. Nthawi yomweyo, mphamvu yomangira ndi mphamvu yometa ya hydroxypropyl methyl cellulose zitha kukonzedwa bwino kuti ziwongolere mphamvu yeniyeni yomangira uinjiniya ndikuwonjezera magwiridwe antchito.
Mwana wokana chinyezi,HPMCHydroxypropyl methyl cellulose, yomwe imagwira ntchito mu ufa wa putty, kuti ipewe kuuma ndi kuuma komwe kumachitika chifukwa cha kutuluka kwa madzi mwachangu kwambiri. Hydroxypropyl methyl cellulose imatha kukulitsa mphamvu yomatira ya ufa wa putty, kuchepetsa kuyimitsidwa, ndikuwonetsetsa kuti ntchito yomanga yaukadaulo ikuyenda bwino.
Kiyi ya HPMC hydroxypropyl methyl cellulose yokhala ndi madzi otsekeka, kukhuthala, kunyowetsa ndi zotsatira zina, kukhuthala, kunyowetsa ndi zotsatira zina zimakhala ndi zotsatira zoyambira. Hydroxypropyl methyl cellulose imatha kuwonjezera nthawi yogwirira ntchito ndikuthana ndi vuto la mphamvu yolimba yoyambira komanso yosakwanira pakumanga kwaukadaulo.
HPMC hydroxypropyl methyl cellulose mu matope oteteza khoma imagwira ntchito yofunika kwambiri pakugwirana ntchito, ndipo imawonjezera mphamvu yokakamiza ya zipangizo zopangira. Mtondo ndi wosavuta kuphimba, umawonjezera magwiridwe antchito, ndipo ntchito yake yayikulu ndi yoletsa kuyenda kwa madzi komanso yothandiza. Mphamvu yotseka madzi ya hydroxypropyl methyl cellulose imatha kuwonjezera nthawi yogwirira ntchito ya matope, kulimbitsa kukana ndi kukhazikika, kukweza mawonekedwe a pamwamba, ndikuwonjezera mphamvu yokakamiza ya matope.
Chomangira matailosi chomwe chimasungunuka kwambiri m'madzi chimachotsa kufunikira kwa matailosi ndi maziko omwe adanyowa kale kapena onyowa, zomwe zimapangitsa kuti ma connection akhale olimba kwambiri. Nthawi yomanga slurry engineering ndi yayitali, yosamala, yofanana, komanso yosavuta kumanga, yokhala ndi chinyezi chabwino.
Pankhani ya zophimba zachilengedwe za latex, hydroxypropyl methyl cellulose ingagwiritsidwe ntchito ngati chopangira filimu, chogwirizira, chochotsa madzi m'thupi, komanso chokhuthala, kuti filimu ya pulasitiki ikhale yolimba, yolimba komanso yolimba. PH yomwe imagwiritsidwa ntchito pokonza kupsinjika kwa interfacial imafotokozedwa bwino, ndipo chisakanizo ndi yankho lachilengedwe ndi chabwino komanso chosalala bwino.
Kukula kwachuma Zophimba zomangamanga zimakhala ndi mphamvu zabwino, madzi abwino kwambiri komanso kukana kukalamba. Ndondomeko yeniyeni yopangira kupaka miyala ndi yofunika kwambiri. Lacquer yapamwamba kwambiri imapangidwa ndi emulsion yoyera ya styrene-acrylic ya 300KG, yankho lamadzi lachilengedwe la 650KG ndi zinthu zina. Lacquer yeniyeni yapamwamba imadziwika ndi mafuta ambiri odzola. Pamene kapangidwe ka madzi ka emulsion ndi 50%, kuchuluka kwa 300KG kodzola madzi pambuyo pouma ndi pafupifupi malita 150, ndipo kuchuluka kwa mchenga wolemera wa 650KG ndi pafupifupi malita 228. Izi zikutanthauza kuti, pankhaniyi, utoto weniweni wa miyala (mtengo wa phala lamtundu) ndi 60%. Chifukwa cha kukula kwakukulu kwa tinthu tating'onoting'ono ndi mawonekedwe osakhazikika a mchenga wabwino, pansi pa kusanthula kwa kukula kwa tinthu tating'onoting'ono, utoto wouma wakunja kwa khoma ukhoza kukhala wozungulira kuchuluka kwa CPVC).
Pa viscosifier, ngati kukhuthala koyenera kwa cellulose kwasankhidwa, chophimba chakunja cha khoma chingapange utoto wowonjezereka, wokhazikika, kuti akwaniritse magawo atatu a chophimba chakunja cha khoma. Malamulo atatu ogwiritsira ntchito zokutira zomangira. Ndipotu, kugwiritsa ntchito miyala yambiri yamtengo wapatali komanso yothandiza, tani ya chinsinsi chosungunulira 100-160kg, mchenga wamitundu 750kg, 20kg (kuphatikiza zowonjezera zokutira, mankhwala ophera tizilombo, fungicides, zomatira, ndi zina zotero), madzi ndi zinthu zina zosamalira khungu. Mtundu uwu wa utoto weniweni wa miyala wa PVC nthawi zambiri umakhala pakati pa 75%? Pakati pa 85%, mu ndondomeko yogwirira ntchito ndi youma, utoto weniweni wa miyala ndi wovuta kukhazikitsa utoto wowonjezera komanso wolimba. Chifukwa chake, momwe mungagwiritsire ntchito mokwanira zotsatira za njira yochepetsera moisturizing emulsion chinsinsi, kotero kuti chophimbacho chikhale chofanana momwe mungathere.
Zophimba zenizeni za nyumba za miyala zimakhala ndi mawonekedwe a kukhuthala kochepa (kulemera kwakukulu kwa mamolekyulu). Chifukwa cha kukwera kwa mitengo ya zinthu za cellulose, kukhuthala kwa cellulose yogwiritsidwa ntchito kumasinthidwa kuchoka pa 30000 kufika pa 50000,80000,100000, ngakhale zitawonjezeka ndi 200000, cholinga ndikuchepetsa kuchuluka kwa cellulose kuchokera ku methyl cellulose (HEC) kupita ku hydroxyl acrylic cellulose (HPMC); Kugwiritsa ntchito methyl methyl cellulose HPMC kudzachepetsa kwambiri kukana madzi kwa utoto weniweni wa nyumba za miyala, kenako kukulitsa kukhuthala kwa cellulose (kulemera kwa maselo ofanana) kudzakhala mapeto enieni a ntchito ya utoto wa nyumba za miyala? Yankho ndilakuti magwiridwe antchito a utoto wa miyala adzaipiraipira!
HPMC ingagawidwe m'magulu awiri: yosungunuka nthawi yomweyo ndi yosungunuka kutentha. Madzi ozizira akamafalikira mofulumira ndikutsika m'madzi, HPMC ingagawidwe m'magulu awiri: yosungunuka nthawi yomweyo ndi yosungunuka kutentha. Panthawiyi, madzi samakhala ndi kukhuthala, chifukwa HPMC imangomwazika m'madzi, ndipo palibe kusungunuka kwenikweni. Pambuyo pa mphindi ziwiri, kukhuthala kwa madzi kumakula pang'onopang'ono, ndikupanga yankho lowoneka bwino la colloid. Zinthu zosungunuka za organic zikamasonkhana m'madzi ozizira, zimatha kufalikira mofulumira m'madzi otentha ndikusungunuka m'madzi otentha. Kutentha kozungulira kukachepa kufika pamlingo winawake wa kutentha, kukhuthala kumachitika pang'onopang'ono mpaka yankho lowoneka bwino la colloidal litapangidwa. Mtundu wa kusungunuka kwa organic wotentha umagwiritsidwa ntchito kokha mu ufa wa putty wamkati ndi matope. Mu guluu wamadzimadzi ndi zokutira, pali gulu lomwe silingagwiritsidwe ntchito. Mtundu wosungunuka mwachangu uli ndi gulu logwiritsidwa ntchito. Ingagwiritsidwe ntchito ngati ufa wa putty wamkati ndi matope, ndipo guluu wake wamadzimadzi ndi zokutira. Palibe zoletsa.
Kusungunuka kwa madzi otentha: chifukwa HPMC m'madzi otentha siisungunuka, kotero HPMC yomwe ili mu ulalo woyambirira imatha kufalikira mofanana m'madzi otentha, kenako nkusungunuka mwachangu ikazizira. Njira ziwiri zakale zafotokozedwa motere:
1) Ikani madzi otentha omwe mukufuna m'chidebe ndikutenthetsa mpaka madigiri 70 Celsius. Pang'onopang'ono sakanizani, pang'onopang'ono onjezerani hydroxypropyl methyl cellulose, pang'onopang'ono HPMC ikuyandama pamtsinje, kenako pang'onopang'ono tulutsani matope oziziritsa mu chisakanizocho.
2) Onjezani theka la madzi kapena theka la madzi mu chidebecho, chitentheni kufika pa 70℃, chitentheni kufika pa 70℃ kuti mufalitse HPMC, ndikukonzerani matope a madzi otentha; Madzi ozizira otsalawo amawonjezeredwa ku matope otentha ndikusakaniza ndi osakaniza pambuyo pozizira.
Njira yosakanizira ufa: Ufa wa HPMC ndi blender ndi ufa wina wambiri, sakanizani mokwanira, kenako onjezerani madzi kuti asungunuke. Panthawiyi, HPMC ikhoza kusungunuka ngati palibe agglomeration, chifukwa ngodya iliyonse yaying'ono imasungunuka pang'ono, pamene madzi amasungunuka nthawi yomweyo — njira imeneyi ndi kugwiritsa ntchito ufa wamkati wa khoma ndi matope opanga. [HPMC] monga chothandizira kukhazikika ndi chothandizira kunyowetsa mu matope amkati a khoma.
Uwu ndi mng'alu wopangidwa ndi hydroxypropyl methyl cellulose (HMPC), womwe uli pafupi ndi chinthu cha viscoelastic (makamaka mucin) m'misozi. Umamatira pamwamba pa diso kudzera mu kuyamwa kwa polima, ndipo umatsanzira ntchito ya conjunctival mucin, kuti uchepetse mkhalidwe wa mucin m'diso ndikuwonjezera mphamvu ya cornea yonyowa.
Mu ufa wa putty, kukhuthala, kusunga madzi ndi kupanga ntchito zitatu. Kukhuthala, cellulose imatha kupindika mpaka kuyimitsidwa, kotero kuti yankho limakhalabe lofanana mmwamba ndi pansi monga ntchito yoletsa kuyenda kwa madzi. Kusunga madzi: kumapangitsa ufa wa putty kuumitsa pang'onopang'ono, calcium yothandiza yothandiza pakuyankha kwa madzi. Kapangidwe: mafuta a cellulose, amatha kupanga ufa wa putty kukhala ndi kapangidwe kabwino. HPMC sichita nawo machitidwe aliwonse a mankhwala, koma imangogwira ntchito yothandizira.
Utoto wa kapangidwe kake umasinthasintha kwambiri posankha mtundu, ndipo ukhoza kukwaniritsa zotsatira zabwino kwambiri pakupanga zinthu zaluso, ndipo utoto weniweni wa miyala pofunafuna utoto wachilengedwe, ndi wabwino kuposa utoto wa kapangidwe kake, chilichonse chili ndi mphamvu zake. Utoto wa kapangidwe kake ndi lacquer popanga zinthu, kuti tisunge mtundu woyambirira nthawi zonse, nthawi zambiri munjira yomaliza, tiyenera kugwiritsa ntchito varnish (mafuta opepuka) kuti titeteze zotsatira zake zaluso kapena zotsatira zake za miyala.
Utoto wa Lacquer, utoto wa kapangidwe kake ndi mtundu wa utoto, womwe umagwiritsidwa ntchito makamaka pokongoletsa khoma. Webusaiti yovomerezeka ya matope achilengedwe imafotokoza mwachidule kusiyana pakati pa utoto wa kapangidwe kake ndi lacquer, utoto wa kapangidwe kake ndi lacquer, njira yodziwika bwino yowonera kusiyana pakati pa utoto wa lacquer ndi utoto wa kapangidwe kake.
Latex yapamwamba kwambiri, opanga kuti asunge ndalama, amangowonjezera pang'ono kuchuluka kwa emulsion, atapanga utoto wouma wa miyala, osakwanira, utoto wa filimu ndi wokulirapo, mphamvu yopondereza imachepa, mvula ikagwa kwa nthawi yayitali, mvula imalowa mu utoto, utoto woyera.
Opanga ena popanga lacquer, nthawi zambiri amawonjezera carboxymethyl cellulose yambiri, hydroxyethyl cellulose ngati thickener, zinthuzi zimasungunuka m'madzi kapena zimasungunuka ndi madzi, ndipo filimu yophimba imasiyidwa mu wosanjikiza, imachepetsa kwambiri kukana kwa madzi kwa chophimbacho.
Nthawi yotumizira: Juni-09-2022