Kodi methyl hydrothyl ali bwanji cellulose?

Mbiri Komanso Mwachidule

Cellulose ether ndiomwe amagwiritsidwa ntchito pogwiritsa ntchito mankhwala owoneka bwino a polymer achilengedwe kudzera mu cellulose ya polymer kudzera mu mankhwala. Pambuyo popanga cellulose nitrause ndi cellulose m'zaka za m'ma 1800, akatswiri a zamankhwala apanga zochokera pa cellulose yambiri ya cellulose, ndipo magawo atsopano a ntchito adapezeka mosalekeza, akuphatikiza magawo ambiri a mafakitale. Cellulose eyather monga sodium carboxymethmethmethmethmethmethmethmethmethmethmethmethmethm Edere amadziwika kuti "mafakitale monodium glutamate" ndipo akhala akugwiritsidwa ntchito kwambiri pobowola mafuta, zomanga, chakudya, mankhwala ndi mankhwala tsiku lililonse.

Hydroxyethyl methl cellouse (Mhpc) ndi ufa wopanda mafuta, wopanda mphamvu, womwe sungunuka madzi ozizira kuti apange yankho lozizira kuti apange njira yosinthira ma viscous. Ili ndi mawonekedwe a kukula, kumanga, kubalalitsa, ndikubalalika, kupanga mafilimu, kuyimitsa, kupatsirana, pansi, kumateteza colloud ndi kuteteza Colloid. Chifukwa cha mawonekedwe omwe amagwira ntchito yamadzi am'madzi, itha kugwiritsidwa ntchito ngati othandizira colloidal, omvera komanso obalalika. Hydroxyethyl methylcellulose yankho limakhala ndi hydrophilicity yabwino ndipo ndi madzi osungitsa madzi abwino. Chifukwa Hydroxyethyl Methylcellulose Magulu a hydroxyethyl, ili ndi luso labwino la odana ndi mildew, kukhazikika kwa ma virus a Victct ndi HEMEEW pakusungira kwa nthawi yayitali.

Hydroxyethyl methylcellulose (hemc) amakonzedwa ndikuyambitsa ma Oftiditureturetureturent Kutentha kwa mikangano ya methylcellulose ndikokwera kuposa mc.

Sitilakichala

Kaonekedwe

Makhalidwe Akuluakulu a Hydroxethyl Methylcellulose (hemc) ndi:

1. Kusungunuka: sungunuka m'madzi ndi ena okhazikika. Hemc imatha kusungunuka m'madzi ozizira. Ndege zake zapamwamba kwambiri zimangoganiza za ufa. Solubilies imasiyanasiyana. Kutsitsa mamasukidwe, chachikulucho chosungunuka.

2. Mafuta amchere: Zogulitsa za hemac ndi cell cellulose yopanda ionic ndipo sikuti ndi okhazikika pamagetsi, koma kuwonjezera kwambiri kwa ma electrolyte, koma kuwonjezera kwa ma elekitala.

3. Ntchito Yoyambira: Chifukwa cha ntchito yogwira ntchito ya madzi am'madzi, itha kugwiritsidwa ntchito ngati othandizira colloidal, emulsifer ndi obalalika.

4. Mafuta amoto: pomwe njira yothetsera mavuto a hemc imawomba mpaka kutentha, ma gels, ndipo nthawi yoyipitsa ija, ma colloids, emulsifiers etc.

5. Kusamvana kwa Metablic ndi Odor Otsika: hemc imagwiritsidwa ntchito kwambiri mu chakudya ndi mankhwala chifukwa sizikukakamizidwa ndipo zimakhala ndi fungo lotsika komanso kununkhira kochepa.

6.

7. PH Kukhazikika: Makutu am'madzi a hemc sakhudzidwa ndi asidi kapena alkali, ndipo mtengo wa pH ndi wokhazikika mkati mwa 3.0 mpaka 11.0.

Karata yanchito

Hydroxyethyl methylcellulose ingagwiritsidwe ntchito ngati colloidal wothandizira Colloidal, emulsiferier ndi obalalika chifukwa chogwira ntchito moyenera. Zitsanzo zake zantchito zili motere:

1. Zotsatira za hydroxyethyl methylcelulose pa simenti. Hydroxyethyl methylcellulose ndi ufa wopanda mafuta, wopanda mphamvu, wopanda zotulukapo zomwe zingasungunuke m'madzi ozizira kuti apange yankho lowonekera. Ili ndi mawonekedwe a kukula, kumanga, kubalalitsa, ndikubalalika, kupanga mafilimu, kuyimitsa, kupatsirana, pansi, kumateteza colloud ndi kuteteza Colloid. Popeza njira yothetsera matendawa imakhala ndi ntchito yogwira ntchito, imatha kugwiritsidwa ntchito ngati othandizira colloidal, emulsifer ndi obalalika. Hydroxyethyl methylcellulose yankho limakhala ndi hydrophilicity yabwino ndipo ndi madzi osungitsa madzi abwino.

2. Utoto wosinthika wosinthika umakonzedwa, womwe umapangidwa ndi zinthu zotsatirazi zigawo ndi kulemera: 150-200 g wa madzi owoneka; 60-70 g ya acrylic emulsion; 550-650 g wa calcium yolemera; 70-90 g wa talcum ufa; Oyambitsa cellulose aquaous yankho 30-40g; Lignocellulose Fuluous yankho 10-20g; Zothandizira makanema 4-6g; Antiseptic ndi bowa 1.5-2.5g; wobalalitsa 1.8-2.2g; kunyowa Mtumiki 1.8-2.2g; 3.5-4.5g; Ethylene glycol 9-11g; The hydroxyethyl methyllulose yankho limapangidwa posungunuka 2-4% hydroxyelyl methylcelose ya madzi; Lingnocellulose yankho limapangidwa ndi 1-3% Lignocellulose yopangidwa ndi kusungunuka m'madzi.

Kukonzekela

Njira yokonzekera ya hydroxethyl methy celyolose, njirayo ndi yotsekerayo yomwe imagwiritsidwa ntchito ngati yophika, ndi ethylene oxide amagwiritsidwa ntchito ngati othandizira ku hydroxyethyl celyolose. Magawo olemera opangira ma hydroxyethyl a methylcellulose ndi awa: 80-800 magawo a toloxium hydroxide, ma esopropanol a todium hydroxide, ma esopropanol a todium hydrox magawo a acetic acid; Masitepe azomwe ali:

Gawo loyamba, ku ketot, onjezani choluene ndi isoppanol osakaniza, madzi, ndi sodium hydroxide, kutentha mpaka 60-80 ° C, pitirizani kutentha 2040;

Gawo lachiwiri, kupenyerera: Kuzizira zinthu zomwe zili pamwambazi mpaka 30-50 ° C, onjezerani kulowera kwa Assulization, ndipo nthawi ya ma alkilization ndi 30 ° C mpaka 30 ° C mpaka 50 ° C mpaka 30

Gawo lachitatu, kuyeretsedwa: Pambuyo pa kupemberera kwatsirizidwa, riyakitalayo imathamangitsidwa ku 0.05-0.07MPA, ndi ethylene oxide ndi methyl chloride imawonjezeredwa kwa mphindi 30-5l. Gawo loyamba la chizungulire: 40-60 ° C, 1.0-2,0 maola, kupanikizika kumayendetsedwa pakati pa 0,15 ndi 0.3mka; Gawo lachiwiri la mathupi: 60 ~ 90 ℃, 2.0 ~ maola 2.5, kupanikizika kumayendetsedwa pakati pa 0,4 ndi 0,8mm;

Gawo lachinayi, osalowerera Thupi la defololict limadzaza ndi madzi ampopi omwe amachitidwa ndi chipangizo chosinthira osmosis pa 90 ° C mpaka 100 ° C;

Gawo Lachisanu, Kutsuka kwa centrifugal: Nkhani mu gawo lachinayi ndi centrifugal kudzera pa centerrifuge ya centerrifuge, ndipo zida zopatulidwa zimasamutsidwa ku thanki yodzala ndi madzi otentha pasadakhale;

Gawo Lachisanu ndi Chimodzi, Kuyanika kwa Centrifugal: Zinthu zosambitsidwa zimafotokozedwa mu chowuma kudzera pa centerrifuge, ndipo zinthuzo zimawuma pa 150-170 ° C, ndipo zinthu zouma zimaphwanyidwa ndikuyikidwa.

Poyerekeza ndi ma cellulose omwe alipo kale, zomwe zimayambitsa nthawi zambiri zimagwiritsa ntchito ethylene oxide ngati ma hydroxyethyl ma celyl, omwe ali ndi mitundu ya hydroxyethyll. Ili ndi mawonekedwe abwino a Visccection ndi kukana minofu pakusungidwa kwa nthawi yayitali. Itha kugwiritsidwa ntchito m'malo mwa ma cellulose ena.