Kugwiritsa ntchito cellulose ether m'magawo osiyanasiyana

Cellulose ether ndi si-ionic semi-synthetic polima, madzi sungunuka ndi zosungunulira awiri, m'mafakitale osiyana chifukwa ndi udindo ndi osiyana, monga mu mankhwala zipangizo zomangira, ali zotsatira zotsatirazi pawiri:

① madzi posungira, ② thickening wothandizira, ③ kusanja, ④ kupanga filimu, ⑤ binder

M'makampani a PVC

ndi emulsifier, dissperants;

M'makampani opangira mankhwala

ndi mtundu wa zomangira ndi kutulutsa pang'onopang'ono mafupa azinthu, chifukwa cellulose ether ali ndi zotsatira zosiyanasiyana zophatikizika, choncho ndi gawo lomwe limagwiritsidwa ntchito kwambiri.Pansipa ndimayang'ana pakugwiritsa ntchito cellulose ether muzinthu zosiyanasiyana zomangira komanso gawo.

Mu utoto wa latex

Mu mzere wa latex utoto, kusankha hydroxyethyl mapadi, mfundo wamba wofanana mamasukidwe akayendedwe ndi 3000-50000cps, limafanana HBR250 specifications, Buku mlingo zambiri 1.5 ‰ -2 ‰.Udindo waukulu wa hydroxyethyl mapadi mu utoto utoto ndi thicken, kuteteza pigment gelation, zimathandiza kuti kubalalitsidwa pigment, latex, bata, ndipo akhoza kusintha mamasukidwe akayendedwe a zigawo zikuluzikulu, zimathandiza kuti kusalaza ntchito yomanga: Hydroxyethyl mapadi ndi yosavuta kugwiritsa ntchito. , madzi ozizira ndi otentha amatha kusungunuka, ndipo samakhudzidwa ndi mtengo wa PH.Itha kugwiritsidwa ntchito mosamala pakati pa PI mtengo 2 ndi 12. Njira zogwiritsira ntchito ndi izi:

I. Onjezani mwachindunji kupanga

Kwa njira iyi, hydroxyethyl cellulose yochedwa ndi nthawi yosungunuka ya mphindi 30 iyenera kusankhidwa.Ndondomeko ndi motere: (1) kukhala mkulu ayenera kudula blender chidebe kuchuluka madzi oyera (2) mkati mphamvu ya anthu anayamba otsika-liwiro kusanganikirana, hydroxyethyl yunifolomu pang'onopang'ono pa nthawi yomweyo kuti agwirizane mu njira ya (3) pitirizani kusonkhezera mpaka zipangizo zonse zonyowa granular (4) kuti agwirizane zina zina ndi zina zamchere (5) chipwirikiti mpaka kwathunthu kusungunuka onse hydroxyethyl, kuwonjezera zigawo zina za chilinganizo, akupera kuti yomalizidwa mankhwala.

2, yokhala ndi chakumwa cha mayi

Njirayi imatha kusankha kusala - kusungunuka kwa cellulose, ndipo imakhala ndi mildew - umboni.Ubwino wa njirayi ndi kukhala ndi kusinthasintha kwakukulu, kujowina utoto wa emulsioni mwachindunji, kupanga njira yofanana ndi ①-④ sitepe ndi yofanana.

3, ndi phala ntchito

Popeza zosungunulira organic ndi osauka solvents (insoluble) kwa hydroxyethyl, angagwiritsidwe ntchito pokonza phala.Zomwe zimagwiritsidwa ntchito kwambiri ndi zosungunulira zamadzimadzi zomwe zimapangidwira muzojambula za latex, monga ethylene glycol, propylene glycol ndi mafilimu opanga mafilimu (monga diethylene glycol butyl acetate), phala la hydroxyethyl cellulose likhoza kuwonjezeredwa mwachindunji ku utoto, mutatha kuwonjezera, pitirizani kusonkhezera mpaka kusungunuka kwathunthu.

Mu scraping wall putty

Pakalipano, China ili m'mizinda yambiri yamadzi kukana, kukana swab ya chitetezo cha chilengedwe putty wakhala makamaka anatengedwa mozama ndi anthu, mu zaka zingapo zapitazo, chifukwa putty wopangidwa ndi kumanga guluu kuwala kuwononga mpweya formaldehyde kuwononga thanzi la anthu, nyumba. guluu amapangidwa ndi polyvinyl mowa ndi formaldehyde acetal reaction.Choncho nkhaniyi pang'onopang'ono inathetsedwa ndi anthu, ndi m'malo mwa zinthu zimenezi ndi mapadi efa mndandanda wa mankhwala, ndiko kunena kuti, chitukuko cha zomangira chitetezo chilengedwe, mapadi ndi mtundu okhawo zinthu pakali pano.

Mu madzi kukana putty amagawidwa mu youma ufa putty ndi putty phala mitundu iwiri, mitundu iwiri ya putty ambiri kusankha methyl cellulose ndi hydroxypropyl methyl mitundu iwiri, kukhuthala kwa kukhuthala mfundo zambiri mu 40,000-75000cps pakati yoyenera kwambiri, mu gawo lalikulu la mapadi. mu putty ndi kusunga madzi, kugwirizana, mafuta ndi zina.

Chifukwa putty chilinganizo cha wopanga aliyense si yemweyo, ena ndi imvi kashiamu, kuwala kashiamu, woyera simenti, ena ndi gypsum ufa, imvi kashiamu, kuwala kashiamu, etc., kotero specification mamasukidwe akayendedwe ndi kulowetsedwa kuchuluka kwa mapadi mwa njira ziwiri. sizili zofanana, kuchuluka kwa kuwonjezera ndi 2 ‰ -3 ‰ kapena choncho.