Momwe mungagwiritsire ntchito Hydroxyethyl cellulose mu utoto wa latex?

Hydroxyethyl celluloseamagwiritsidwa ntchito kwambiri mu utoto wa latex, utoto wa emulsion & zokutira, momwe mungagwiritsire ntchito Hydroxyethyl cellulose mu utoto wa latex?

1. Onjezerani mwachindunji ku pigment ya abrasive

Njira imeneyi ndi yosavuta ndipo imatenga nthawi yochepa. Njira zambiri ndi izi:

(1) Onjezani madzi oyeretsedwa oyenerera ku vat ya agitator yodula kwambiri (nthawi zambiri, ethylene glycol, wetting agent ndi filimu yopangira mafilimu akuwonjezeredwa panthawiyi)

(2) Yambani kuyambitsa pa liwiro lotsika ndikuwonjezera pang'onopang'ono hydroxyethyl cellulose

(3) pitirizani kusonkhezera mpaka tinthu tating’ono tonyowa

(4) Kuwonjezera mildew inhibitor, pH adjuster, etc.

(5)Onetsetsani mpaka cellulose yonse ya hydroxyethylimasungunuka kwathunthu (kukhuthala kwa yankho kumachulukirachulukira) musanawonjezere zigawo zina mukupanga ndikupera mpaka lacquer ipangike.

2. okonzeka ndi chakumwa cha mayi

Njirayi imayamba kukhala ndi zakumwa zoledzeretsa zochulukirapo kenako ndikuwonjezera utoto wa latex. Ubwino wa njirayi ndikuti umakhala ndi kusinthasintha kwakukulu ndipo ukhoza kuwonjezeredwa mwachindunji ku utoto womalizidwa, koma uyenera kusungidwa bwino. Masitepe ndi njira ndizofanana ndi masitepe (1) - (4) mu Njira 1, kupatula kuti choyambitsa sichiyenera kukhala chokwera, ndipo chotsitsimutsa chokha chokhala ndi mphamvu zokwanira kusunga ulusi wa hydroxyethyl mofanana wobalalika mu yankho umagwiritsidwa ntchito. . akhoza. Pitirizani kuyambitsa mpaka kusungunuka kwathunthu mu viscous solution. Tiyenera kukumbukira kuti inhibitor ya nkhungu iyenera kuwonjezeredwa kwa mowa wa amayi mwamsanga.

3. ndi phala

Popeza zosungunulira organic ndi osauka zosungunulira kwa hydroxyethyl mapadi, izi zosungunulira organic angagwiritsidwe ntchito kupereka phala. Zosungunulira zomwe zimagwiritsidwa ntchito kwambiri monga ethylene glycol, propylene glycol, ndi zoyambitsa mafilimu (monga hexane kapena diethylene glycol butyl acetate), madzi oundana nawonso sasungunulira bwino, kotero madzi a ayezi nthawi zambiri amagwiritsidwa ntchito limodzi ndi zakumwa zamadzimadzi Amakhala ndi zida. phala. Phala-ngati hydroxyethyl cellulose akhoza kuwonjezeredwa mwachindunji ku utoto. Hydroxyethyl cellulose yaviikidwa mokwanira mu phala. Akawonjezeredwa ku utoto, amasungunuka nthawi yomweyo ndikukhuthala. Pambuyo Kuwonjezera, m`pofunika mosalekeza akuyambitsa mpaka hydroxyethyl mapadi ndi kusungunuka kwathunthu ndi homogeneous. Nthawi zambiri, phala limasakanizidwa ndi gawo la organic zosungunulira kapena madzi a ayezi ndi gawo la hydroxyethyl cellulose. Pakatha pafupifupi mphindi 5 mpaka 30, cellulose ya hydroxyethyl imapangidwa ndi hydrolyzed ndikuwuka modabwitsa. Nthawi zambiri, chinyezi chamadzi m'chilimwe chimakhala chokwera kwambiri ndipo sayenera kugwiritsidwa ntchito ngati phala.

4. Kusamala mukamagwiritsa ntchito mowa wa hydroxyethyl cellulose

Popeza hydroxyethyl cellulose (HEC)ndi granule yopangidwa, ndiyosavuta kugwira ndikusungunula m'madzi malinga ngati zinthu zotsatirazi zikudziwika.

(1) Asanayambe komanso atatha kuwonjezera hydroxyethylcellulose, kusonkhezera kuyenera kupitilizidwa mpaka yankho likhale lomveka bwino komanso lomveka bwino.

(2) Iyenera kusefa pang'onopang'ono mu thanki yosakaniza. Osawonjezera cellulose ya hydroxyethyl yomwe idapangidwa kukhala chipika ndi mawonekedwe ozungulira mwachindunji mu thanki yosanganikirana.

(3) Kutentha kwa madzi ndi pH mtengo m'madzi kumakhala ndi ubale wofunikira ndi kusungunuka kwa cellulose ya hydroxyethyl, ndipo chisamaliro chapadera chiyenera kutengedwa.

(4) Osawonjezera zinthu za alkaline kusakaniza ufa wa hydroxyethyl cellulose usananyowedwe ndi madzi. Kuchulukitsa pH pambuyo pa kuviika kumathandiza kusungunuka.

(5) Onjezani ma mold inhibitors posachedwa.

(6) Pamene ntchito mkulu mamasukidwe akayendedwe hydroxyethyl mapadi, mayi mowa ndende sayenera kukhala apamwamba kuposa 2.5-3% (ndi kulemera), apo ayi mowa mayi n'kovuta kusamalira.