Kugwiritsa Ntchito ndi Kukonzekera Kwa Hydroxethyl Methyl celc

Hydroxyethyl methyl cellhuse hemcItha kugwiritsidwa ntchito ngati wothandizira wa colloid, emulsiferier ndi obalalika chifukwa cha ntchito yake yogwira ntchito mu madzi am'madzi. Chitsanzo cha ntchito yake ndi motere: zotsatira za hydroxyethyl methl cellulose pa simenti. Hydroxyethyl methylcellulose ndi ufa wopanda mafuta, wopanda ufa woyera womwe umasungunuka m'madzi ozizira kuti apange chomveka bwino, mawonekedwe a viscous. Ili ndi katundu wa kuthira, kumanga, kubalalitsa, emulsifteming, kupanga mafilimu, kuyimitsa, kudzipatula, kusunganso chinyezi ndi kuteteza ma colodi. Chifukwa cha ntchito yogwira ntchito ya madzi am'madzi, itha kugwiritsidwa ntchito ngati wothandizira wa colloid, emulsifier komanso wobalalitsa. Hydroxyethyl methl cellulose solution imakhala ndi hydrophilicity yabwino ndipo ndi othandizira omwe amapezeka.
konzekera
Njira yokonzekera hydroxyethyl mealose, njira yomwe imaphatikizika pogwiritsa ntchito thonje loyenga ndi ethylene oxide ngati wothandizikahydroxyethyl methyl cellulose. Zida zopangira pokonzekera hydroxyethyl methl cellulose imakonzedwa mbali ndi ma eyelippanol ndi isoppanol ngati edium hydroxide, magawo 80-85 a Wokonzera thonje, 20-28 magawo a oxythanthene, ma 80-90 madera a methyl chloride, ndi 16-19 magawo acetic acid; Masitepe azomwe ali:

Gawo loyamba, mu riactor, onjezerani toloene osakaniza, madzi, ndi sodium hydroxide, kutentha mpaka 60 ~ 80 ℃, khalani osalala 20 ~ 40;

Gawo lachiwiri, lalkirization: Kuziziritsa zomwe zili pamwamba pa 30 ~ 50 ℃, onjezerani kusakaniza kwa nitronene ndi nitrogen pazakudya zitatu Mikhalidwe ndi motere: Nthawi ya ma alkishilization ndi maola 2, ndipo kutentha kwa ma flkirization ndi 30 ° C mpaka 50 ° C;

Gawo lachitatu, kuyesedwa kwachitatu: Kuyamwa kumamalizidwa, riyakitalayo imathamangitsidwa ku 0,05 ~ 0.07MPA, ethylene chloride ndi mphindi 30 ~. Gawo loyamba la chinsalu: 40 ~ 60 ℃, 1.0 ~ 2,0 ora, kupanikizika kumayendetsedwa pakati pa 0.10.3m.3mna; Gawo lachiwiri la chikondwerero: 60 ~ 90 ℃, 2.0 ~ maola 2.5, kupanikizika kumayendetsedwa pakati pa 0,40.8.MPA;

Gawo la 4, osalowerera: Onjezani aceti a acetic a acetic pasadakhale ku malo osungirako zinthu zopitilira muyeso, kutentha 68 Pamene mpweya umamalizidwa, tanki yokhazikika imadzaza ndi madzi ampopi omwe amapangidwa ndi chipangizo chosinthira osmosis pa 90 ~ 100 ~ 100 ~

Gawo Lachisanu, Kutsuka kwa centrifugal: Nkhani mu gawo lachinayi ndi centrifugated centerrifige, ndipo zinthu zopatulirika zimasamutsidwa kukhosi lodzala ndi madzi otentha, ndipo zinthuzo zimatsuka;

Gawo Lachisanu ndi chimodzi, kuyanika kwa centrifugal: Nkhani yotsukidwa imanyamulidwa kuti ikhale yowuma kudzera pa centerrifuge, zinthuzo zimawuma pa 150-170 ° C, ndipo zida zouma zimasungidwa.

Poyerekeza ndi zomwe zilipocellulose etherMaukadaulo opanga, zopangidwa zomwe zilipo zimatengera ethylene oxide monga momwe amathandizira kuti akonzekere ma hydroxethyl gulu la hydroxyathyl. Ikhoza kugwiritsidwa ntchito m'malo mwa cellulose ina.