Utoto wa mochedwa (yemwe amadziwikanso ngati utoto wozikidwa m'madzi) ndi mtundu wa utoto ndi madzi monga zosungunulira, zomwe zimagwiritsidwa ntchito pokongoletsa ndi kuteteza makhoma, denga ndi malo ena. Fomu ya penti ya latex nthawi zambiri imakhala ndi polymer emulsion, pigment, zofananira, zowonjezera ndi zosakaniza zina. Mwa iwo,hydroxyethyl cellulose (hec)ndi lofunika kwambiri ndipo limagwiritsidwa ntchito kwambiri penti. Hec silingathe kusintha mamasukidwe ndi chizolowezi cha utoto, komanso kukonza mafilimu.
1. Makhalidwe oyambira a Hec
Hec ndi polymer yosungunuka yamadzi kusinthidwa kuchokera ku celluluse ndi celluse yabwino, kuyimitsidwa ndi katundu wamafilimu. Tcheni wake wa moleculal umakhala ndi magulu a hydroxyethyl, omwe amathandizira kusungunuka m'madzi ndikupanga yankho lalitali kwambiri. Hec ali ndi hydrophilicity wamphamvu, yomwe imapangitsa kuti ikhale ndi gawo pakukhazikitsa kuyimitsidwa, kusintha rheology ndikuwongolera mafilimu a Paatx.
2. Kulumikizana pakati pa Hec ndi Polymer emulsion
Chigawo cha corex penti la latch ndi polymer emulsion (monga ma acrylic ad acid kapena ethylene-vinyl acetate corolmer), omwe amapanga mafupa akulu a filimuyo. Kuyanjana pakati pa kudala ndi kudandaula ku Eldeme ndi Polymer kumawonekera makamaka muzinthu zotsatirazi:
Kukhazikika: Hec, wofanana, amatha kuwonjezera mafayilo a latex ndikuthandizira kukhazikika pazinthu. Makamaka m'mawu otsika kwambiri polith, kuwonjezera kwa hec kumatha kuchepetsa kukhazikika kwa emulsion tinthu tambiri ndikuwongolera kusungunuka kwa utoto.
Kuwongolera kwa Rheogical: Hec kumatha kusintha zomwe zimapangitsa kuti utoto wa athex, kuti ukhale ndi magwiridwe antchito bwino panthawi yomanga. Mwachitsanzo. Kuphatikiza apo, hec imathanso kukonzanso utoto ndi kukulitsa kufanana kwa filimu ya utoto.
Kuthamangitsa Kugwiritsa Ntchito: Kuwonjezera kwa Hec kumatha kusintha kusinthasintha, kolowerera ndi kusenda kukalamba. Makina a hex amatha kulumikizana ndi elilsion kuti apatse mawonekedwe a filimu ya utoto, ndikuwupangitsa kukhala kopepuka ndipo motero amawongolera kulimba kwake.
3. Kuyanjana pakati pa Hec ndi utoto
Ma utoto mu utoto wa lambi nthawi zambiri umaphatikizapo utoto wamphamvu (monga Titanium dioxide, Mic ufa, etc.) ndi zojambulajambula. Kulumikizana pakati pa Hec ndi utoto kumawonekera makamaka m'mbali zotsatirazi:
Kubalalika kwa pigment: Mphamvu yakukula kwa hec imawonjezera mafayilo a latex, yomwe imatha kubereka bwino tinthu tating'onoting'ono tinthu tating'onoting'ono ndikupewa kuphatikizika kwamitundu kapena mpweya. Makamaka pazinthu zina zabwino za pigment, kapangidwe ka polymer kwa hec kumatha kukulunga pamwamba pa pigments kuti muchepetse kupezeka kwa tinthu tating'onoting'ono tating'onoting'ono tating'onoting'ono tinthu tating'onoting'ono toyambitsa matenda, potero kumawonjezera kubadwa kwa pigment ndi kufanana kwa utoto.
Kulimbika pakati pa utoto ndi filimu yokutira:HecMamolekyu amatha kubala ma adsorption kapena mankhwala okhala ndi utoto pakati pa utoto komanso filimu yokutidwa, ndikupewa izi pa filimu yokutidwa. Makamaka utoto wambiri waposachedwa, hec imatha kukonza bwino nyengo ndi kukana kwa uvi ndikuwonjezera moyo wa ntchito yokutidwa.
4. Kulumikizana pakati pa Hec ndi mafilimu
Ena mafilimu (monga calcium carbonate, ufa wa tilcum, michere ya uleng, etc.) nthawi zambiri amawonjezeredwa ku phwirix Kuyanjana pakati pa Hec ndi mafilimu kumawonekera m'zinthu zotsatirazi:
Kuyimitsidwa kwa mafilimu: Hec imatha kuwongolera mafakitale a latax ophatikizidwa mu vanifolomu chifukwa cha kuchuluka kwake, kupewa mafinya kukhazikika. Kwa mafayilo okhala ndi tinthu akuluakulu, zotsatira za kukula kwa hec ndizofunikira makamaka, zomwe zimatha kukhalabe kukhazikika kwa utoto.
Kukhudza ndi kukhudzana ndi zokutira: kuwonjezera kwa mafilimu nthawi zambiri kumakhudzanso ndikugwira ntchito yokutidwa. Dlevicel®hec imatha kusintha mawonekedwe akugwirizanitsa mwa kusintha magawidwe ndikukonzekera mafayilo. Mwachitsanzo, kufalikira kwa ma yunifolomu kumathandizira kuchepetsa kukula kwa chimbudzi ndikusintha khungu ndi gloss ya filimu ya utoto.
5. Kulumikizana pakati pa Hec ndi zina zowonjezera
Ma centunt a penti ya latex imaphatikizanso zina zowonjezera, monga zowonjezera, zoteteza, othandizira, etc.
Kulumikizana pakati pa demoamer ndi Hec: Ntchito ya demoadame ndi kuchepetsa thovu kapena chithovu cha utoto, ndipo mawonekedwe owoneka bwino a Hec angakhudze zotsatira za demoadamer. Hec imatha kupangitsa kuti zikhale zovuta kuti omasuka asachotse chithovu, motero akukhudza utoto wapamwamba. Chifukwa chake, kuchuluka kwa hec kumawonjezera kuyanjana ndi kuchuluka kwa decomer kuti akwaniritse zabwino.
Kulumikizana pakati pa oteteza zam'manja ndi Hec: Udindo wa oteteza ndikuteteza kukula kwa tizilombo ta penti ndikuwonjezera nthawi yosungirako utoto. Monga momwe mawonekedwe achilengedwe, ma hec a Hec angalumikizirena ndi zoteteza ena, zomwe zikukhudzanso mphamvu. Chifukwa chake, ndikofunikira kusankha chotetezera chomwe chikugwirizana ndi HeC.
Udindo waHecMu utoto wa mochedwax sungokhala wokha, koma mogwirizana ndi emulsions emulsions, utoto, mafilimu ndi zina zowonjezera zimatsimikizira magwiridwe antchito a latex. Helicentl ®hec imatha kusintha utoto wazomera wa latex, kusintha kubvutanitsidwa ndi utoto ndi mafilimu, ndikuwonjezera makina ndi kulimba kwa zokutira. Kuphatikiza apo, zotsatira za hec ndi zowonjezera zina zimakhalanso ndi zofunikira pakukhazikika, zomangamanga ndi mawonekedwe ophatikizika ndi utoto wa latex. Chifukwa chake, popanga mapepala a matope a latex, kusankha koyenera kwa mtundu wa Hec ndi kuchuluka kwake komanso kuchuluka kwake ndi zosakaniza zina ndi chinsinsi cha utoto wa latex.
Post Nthawi: Desic-28-2024