Kugwiritsa ntchito hydroxyethyl cellulose mu utoto wa latex

Hydroxyethyl cellulose (HEC)ndi chochokera m'madzi chosungunuka cha cellulose chokhala ndi makulidwe abwino, kupanga filimu, kunyowa, kukhazikika, ndi emulsifying katundu. Chifukwa chake, imagwiritsidwa ntchito kwambiri m'mafakitale ambiri, makamaka Imakhala ndi gawo lofunikira komanso lofunikira mu utoto wa latex (womwe umadziwikanso kuti utoto wamadzi).

1. Basic katundu wa hydroxyethyl mapadi
Ma cellulose a Hydroxyethyl ndi polima osungunuka m'madzi omwe amapezeka posintha ma cellulose (kuyambitsa magulu a hydroxyethyl pa ma cellulose). Zina zake zazikulu ndi izi:

Kusungunuka kwamadzi: HEC imatha kusungunuka m'madzi kuti ikhale yankho la viscous kwambiri, potero kumapangitsa kuti ma rheological apangidwe.
Kukulitsa: HEC imatha kukulitsa kukhuthala kwa utoto, kupanga utoto wa latex kukhala ndi zinthu zabwino zokutira.
Zomatira ndi kupanga mafilimu: Mamolekyu a HEC ali ndi hydrophilicity, yomwe imatha kupititsa patsogolo ntchito zokutira ndikupangitsa kuti zokutira zikhale zofananira komanso zosalala.
Kukhazikika: HEC ili ndi kukhazikika kwabwino kwa kutentha ndi kukhazikika kwa mankhwala, ikhoza kukhalabe yokhazikika panthawi yopanga ndi kusungirako zokutira, ndipo sichikhoza kuwonongeka.
Kukaniza kwabwino: HEC ili ndi kukana kwamphamvu kwambiri, komwe kumatha kuchepetsa kutsika kwa utoto pakumanga ndikuwongolera momwe ntchito yomanga ikuyendera.

2. Ntchito ya hydroxyethyl cellulose mu utoto wa latex
Utoto wa latex ndi utoto wopangidwa ndi madzi womwe umagwiritsa ntchito madzi monga zosungunulira ndi polima emulsion monga chinthu chachikulu chopanga filimu. Ndizogwirizana ndi chilengedwe, zopanda poizoni, zosakwiyitsa komanso zoyenera kupenta mkati ndi kunja kwa khoma. Kuphatikizika kwa cellulose ya hydroxyethyl kumatha kupititsa patsogolo magwiridwe antchito a utoto wa latex, womwe umawonekera m'mbali zotsatirazi:

2.1 Kukulitsa zotsatira
Popanga utoto wa latex, HEC imagwiritsidwa ntchito makamaka ngati chowonjezera. Chifukwa cha makhalidwe osungunuka m'madzi a HEC, amatha kusungunuka mwamsanga muzitsulo zamadzimadzi ndikupanga maukonde kudzera muzochita za intermolecular, ndikuwonjezera kukhuthala kwa latex utoto. Izi sizingangowonjezera kufalikira kwa utoto, ndikupangitsa kuti ikhale yoyenera kupukuta, komanso kuteteza utoto kuti usagwedezeke chifukwa cha kukhuthala kochepa kwambiri panthawi yojambula.

2.2 Kupititsa patsogolo ntchito yomanga ya zokutira
HECamatha kusintha bwino mawonekedwe a penti ya latex, kusintha kukana kwa sag ndi utoto wa utoto, kuwonetsetsa kuti utotowo ukhoza kuphimbidwa mofanana pamwamba pa gawo lapansi, ndikupewa zochitika zosayenera monga ming'oma ndi zizindikiro zoyenda. Kuonjezera apo, HEC ikhoza kupititsa patsogolo kunyowa kwa utoto, kulola utoto wa latex kuti uphimbe mofulumira pamwamba pojambula, kuchepetsa zolakwika zomwe zimayambitsidwa ndi kupaka kosiyana.

2.3 Limbikitsani kusunga madzi ndikuwonjezera nthawi yotsegula
Monga polima pawiri yokhala ndi mphamvu yosungira madzi mwamphamvu, HEC imatha kukulitsa nthawi yotsegulira utoto wa latex. Nthawi yotsegulira imatanthawuza nthawi yomwe utoto umakhalabe mu utoto wojambulidwa. Kuwonjezera kwa HEC kumatha kuchepetsa kutuluka kwa madzi, motero kumawonjezera nthawi yogwiritsira ntchito utoto, kulola ogwira ntchito yomanga kukhala ndi nthawi yochuluka yochepetsera ndi kuyanika. Izi ndizofunikira kuti penti ikhale yosalala, makamaka pojambula malo akuluakulu, kuti penti isaume msanga, zomwe zimapangitsa kuti pakhale zizindikiro za brush kapena zokutira zosagwirizana.

2.4 Limbikitsani kumamatira kumamatira ndi kukana madzi
Muzopaka utoto wa latex, HEC imatha kulimbikitsa kumamatira pakati pa utoto ndi pamwamba pa gawo lapansi kuti zitsimikizire kuti zokutira sizikugwa mosavuta. Panthawi imodzimodziyo, HEC imapangitsa kuti penti ya latex isalowe madzi, makamaka m'malo onyowa, omwe angateteze bwino kulowa kwa chinyezi ndikuwonjezera moyo wautumiki wa zokutira. Kuphatikiza apo, hydrophilicity ndi kumamatira kwa HEC kumathandizira utoto wa latex kupanga zokutira zabwino pamagawo osiyanasiyana.

2.5 Kupititsa patsogolo kukana kokhazikika komanso kufanana
Popeza zigawo zolimba mu utoto wa latex zimakhala zosavuta kukhazikika, zomwe zimapangitsa kuti penti ikhale yosiyana, HEC, monga thickener, imatha kusintha bwino zotsutsana ndi kukhazikika kwa utoto. Powonjezera kukhuthala kwa ❖ kuyanika, HEC imathandiza kuti tinthu tating'onoting'ono tiwonongeke mofanana mu zokutira, kuchepetsa kukhazikika kwa tinthu, potero kusunga kukhazikika kwa ❖ kuyanika panthawi yosungirako ndi ntchito.

3. Ubwino wogwiritsa ntchito hydroxyethyl cellulose mu utoto wa latex
Kuphatikizika kwa cellulose ya hydroxyethyl kuli ndi zabwino zambiri pakupanga ndi kugwiritsa ntchito utoto wa latex. Choyamba, HEC ili ndi makhalidwe abwino oteteza chilengedwe. Kusungunuka kwake m'madzi komanso kusakhala ndi kawopsedwe kumatsimikizira kuti utoto wa latex sudzatulutsa zinthu zovulaza mukamagwiritsa ntchito, kukwaniritsa zofunikira za utoto wamakono wokonda zachilengedwe. Kachiwiri, HEC ili ndi zinthu zolimba zopanga filimu, zomwe zimatha kupititsa patsogolo mawonekedwe a filimu ya utoto wa latex, kupangitsa kuti zokutira zikhale zolimba komanso zosalala, zolimba bwino komanso kukana kuipitsa. Kuphatikiza apo, HEC imatha kupangitsa kuti utoto wa latex ukhale wamadzimadzi komanso wowoneka bwino, uchepetse zovuta zomanga, ndikuwongolera magwiridwe antchito.

Kugwiritsa ntchito kwahydroxyethyl cellulosemu utoto wa latex uli ndi zabwino zambiri ndipo ukhoza kusintha bwino mawonekedwe a rheological, kapangidwe kake, kumamatira komanso kulimba kwa utoto. Ndikusintha kosalekeza kwa chitetezo cha chilengedwe komanso zofunikira za utoto, HEC, monga chowonjezera chofunikira komanso chowongolera magwiridwe antchito, yakhala imodzi mwazowonjezera zofunika kwambiri mu utoto wamakono wa latex. M'tsogolomu, ndi chitukuko chaukadaulo, kugwiritsa ntchito HEC mu utoto wa latex kudzakulitsidwanso ndipo kuthekera kwake kudzakhala kwakukulu.