Kugwiritsa Ntchito Ma Cellulose Ether M'magawo Osiyanasiyana

Ma cellulose ether ndi polima osapangidwa ndi ionic semisynthetic, omwe amasungunuka m'madzi komanso osungunuka. Zili ndi zotsatira zosiyana m'mafakitale osiyanasiyana. Mwachitsanzo, muzinthu zomangira mankhwala, zimakhala ndi zotsatirazi:

①Wosunga madzi, ②Thickener, ③katundu woyezera, ④Katundu wopanga mafilimu, ⑤Binder

Mu polyvinyl kolorayidi makampani, ndi emulsifier ndi dispersant; mu makampani opanga mankhwala, ndi binder ndi pang'onopang'ono ndi kulamulidwa kumasulidwa chimango zakuthupi, etc. Chifukwa mapadi ali ndi zotsatira zosiyanasiyana zophatikizana, ntchito yake Munda ndi wochuluka kwambiri. Kenako, ndidzayang'ana kwambiri kugwiritsa ntchito ndi ntchito ya cellulose ether muzinthu zosiyanasiyana zomangira.

mu utoto wa latex

Mu makampani lalabala utoto kusankha hydroxyethyl mapadi, mfundo zonse kukhuthala ofanana kukhuthala ndi 30000-50000cps, lolingana ndi mfundo za HBR250, ndi buku mlingo zambiri za 1.5 ‰ -2 ‰. Ntchito yaikulu ya hydroxyethyl mu utoto utoto ndi thicken, kuteteza gelation wa pigment, kuthandiza kubalalika kwa pigment, kukhazikika kwa latex, ndi kuonjezera mamasukidwe akayendedwe a zigawo zikuluzikulu, zomwe zimathandiza kuti kusanja ntchito yomanga: Hydroxyethyl mapadi ndi yosavuta kugwiritsa ntchito. Ikhoza kusungunuka m'madzi ozizira ndi madzi otentha, ndipo sichikhudzidwa ndi pH mtengo. Itha kugwiritsidwa ntchito mosamala pakati pa PI mtengo 2 ndi 12. Njira zogwiritsira ntchito ndi izi:

I. Onjezani mwachindunji mukupanga

Kwa njirayi, mtundu wochedwa wa hydroxyethyl cellulose uyenera kusankhidwa, ndipo mapadi a hydroxyethyl okhala ndi nthawi yosungunuka yopitilira mphindi 30 amagwiritsidwa ntchito. Masitepewa ndi awa: ① Ikani madzi enaake mumtsuko wokhala ndi chowombeza chometa ubweya wambiri ② Yambani kuyambitsa mosalekeza pa liwiro lotsika, ndipo nthawi yomweyo onjezani gulu la hydroxyethyl mu yankho molingana ③Pitirizani kusonkhezera mpaka zida zonse za granular zinyowetsedwa ④Onjezani zowonjezera zonse, ndi zina. Magulu a hydroxyethyl amasungunuka kwathunthu, ndiye Onjezani zigawo zina mu chilinganizo ndikupera mpaka mankhwala omalizidwa.

2. Zokhala ndi chakumwa cha mayi kuti mudzagwiritse ntchito mtsogolo

Njirayi imatha kusankha mtundu wanthawi yomweyo, ndipo imakhala ndi anti-mildew effect cellulose. Ubwino wa njirayi ndikuti umakhala ndi kusinthasintha kwakukulu ndipo ukhoza kuwonjezeredwa mwachindunji ku utoto wa latex. Njira yokonzekera ndi yofanana ndi masitepe ①-④.

3. Pangani phala kuti mudzagwiritse ntchito

Popeza organic solvents ndi osauka solvents (insoluble) kwa hydroxyethyl, zosungunulira izi angagwiritsidwe ntchito kupanga phala. Zosungunulira zomwe zimagwiritsidwa ntchito kwambiri ndi zamadzimadzi zomwe zimapangidwa ndi utoto wa latex, monga ethylene glycol, propylene glycol, ndi opanga mafilimu (monga diethylene glycol butyl acetate). Phala la hydroxyethyl cellulose likhoza kuwonjezeredwa mwachindunji ku utoto. Pitirizani kusonkhezera mpaka kusungunuka kwathunthu.

mu putty

Pakali pano, m'mizinda yambiri m'dziko langa, putty wosamva madzi komanso wosapaka malo otetezedwa ndi chilengedwe wakhala amtengo wapatali kwambiri ndi anthu. Amapangidwa ndi acetal reaction ya vinyl mowa ndi formaldehyde. Choncho, nkhaniyi imachotsedwa pang'onopang'ono ndi anthu, ndipo mankhwala a cellulose ether amagwiritsidwa ntchito m'malo mwa nkhaniyi. Izi zikutanthauza kuti, pakupanga zida zomangira zachilengedwe, cellulose ndiyo yokhayo.

Mu putty yosagwira madzi, imagawidwa m'mitundu iwiri: ufa wowuma wa putty ndi putty phala. Mwa mitundu iwiriyi ya putty, methyl cellulose ndi hydroxypropyl methyl ziyenera kusankhidwa. Mawonekedwe a viscosity nthawi zambiri amakhala pakati pa 40000-75000cps. Ntchito zazikulu za cellulose ndikusunga madzi, kugwirizana ndi kuyamwitsa.

Popeza makonzedwe a putty a opanga osiyanasiyana ndi osiyana, ena ndi imvi kashiamu, kashiamu kuwala, simenti woyera, etc., ndi ena gypsum ufa, imvi kashiamu, kuwala kashiamu, etc., kotero specifications, mamasukidwe akayendedwe ndi malowedwe a mapadi mu mafomu awiri osiyana. Ndalama zomwe zawonjezeredwa ndi pafupifupi 2 ‰-3 ‰.