Hydroxypypyl methylcellulose ndi chilengedwe chachilengedwe, chomwe sichikuvulaza thupi la munthu. Komabe, zopangira mabatani a thonje ndi hpmc omwe amagwiritsidwa ntchito mu fakitaleyo ndi nkhope yonse, chifukwa izi zidzakhala ndi fumbi, ndipo enawo siovulaza.
Hydroxypypyl methylcellulose sikuti zopweteka. Cellulose amapenyedwa ndipo amakonzedwa pogwiritsa ntchito molakwika mwachilengedwe pakupanga mwachilengedwe kusokonekera kwa alkali, kuyankha, kuchapa, kupukuta ndi njira zina. Sichidzathetsa thanzi la anthu.
Hydroxypropyl mealoull cellulose, yomwe imadziwikanso kuti hypromelweose ndi cellulose hydroxypropyl wa thonje wa thonje ngati cellon yopanda mikhalidwe.
Kaphatikizidwe wa hydroxypypyupuyl methylcellulose: cellode yoyenga bwino imagwiritsidwa ntchito ndi Lye pa 35-40 ℃ Nthawi yophwanyika, ndipo ukalamba umachitika 35: M'magawo ofunikira. Ikani fiberi ya Alkali mu ketulo yoyeserera, onjezani ma proreyne oxide ndi methyl chloride motsatizana, ndikumuyenchera pa 50-80 ℃ kwa 5h, ndipo kupanikizika kwapafupi ndi 1.8mm. Kenako onjezani kuchuluka kwa hydrochloric acid ndi oxalic acid kutsuka zida m'madzi otentha pa 90 ° C kuti muwonjezere kukula ndi voliyumu. Kununkhira ndi centrifugation. Swash osatenga nawo mbali. Madzi omwe ali muzomwe ali ndi zaka zosakwana 60%, amawuma ndi mtsinje wa mpweya wambiri pa 130 ° C kwa ochepera 5%.
HPMC yopangidwa ndi njira yosungunulira imagwiritsa ntchito toluene ndi isoppanol ngati zosungunulira. Ngati wasambitsidwa kwambiri, udzakhala ndi fungo lotsalira. Ichi ndi vuto la kusinthaku, komwe sikukhudza kugwiritsa ntchito kapena vuto lililonse.
HyPromellose ndi thonje loyenerera lomwe silinapangidwe ndi madzi kuti apeze ma cellulose, ndipo amatenga nawo mbali mu cellulose, ndipo amatenga nawo mbali mu cellulose, olowerera ndi isoppanol kuti akwaniritse zinthu zotheka. Ogwiritsa ntchito bwino kwambiri komanso onunkhira bwino, kotero ogwiritsa ntchito amatha kugwiritsa ntchito mokhazikika.
Hydroxypropyl methylcellulose ayenera kulabadira zinthu zotsatirazi pogwiritsa ntchito:
Pamaso kwa matope ufa, hydroxypropyl methylcellulose amangothandizana, ndipo satenga nawo mbali pamalingaliro aliwonse. Matope utoto umawonjezeredwa ndi madzi ndikuyika khoma, yomwe ndi mankhwala. Chifukwa cha kapangidwe ka zinthu zatsopano, utoto ufa pakhoma umachotsedwa kukhoma ndikuyika ufa kuti apange zinthu zatsopano. Hydroxypylropyl methllulose amangogwiritsa ntchito madzi ndikuthandizira calcium kuti ayankhe bwino, koma satenga nawo mbali yankho lililonse.
Hydroxypropyl methy cellulose hpmc satenga nawo mbali iliyonse yamankhwala, koma amangothandiza. Onjezani madzi ku utope ufa ndikuyika pakhoma, kumachitikanso mankhwala. Chifukwa cha kapangidwe ka zinthu zatsopano, utoto ufa pakhoma umachotsedwa kukhoma ndikukhala pansi, ndipo sizingatheke, chifukwa zinthu zatsopano zapangidwa ns. Zigawo zazikuluzikulu za calcium ufa ndi: CA (o) 2, osakaniza a cao ndi bako ochepa, Caco3, CAO
H2o = Ca (o) 2-ca (o) 2 CO2 = Caco3 ↓ H2O
Kashikirani ya gy cascium imatulutsa zinthu zina molingana ndi madzi ndi CO2 mlengalenga, pomwe HPMC imangosunga madzi ndikuthandizira calcium kuti iyankhe bwino. Sizitenga nawo mbali pakuyankha kulikonse.
Hydroxypropyl methl cellulose imakhala ndi ntchito zosiyanasiyana. M'moyo watsiku ndi tsiku, zinthu zambirizi ndizosagwirizana ndi ntchito yopanga. Kenako, m'makampani osiyanasiyana, ma hydroxypropyll methylceululose, ndikuwafotokozera, kuti mutha kupewa kugwiritsa ntchito molakwika akamadziwa.
Choyamba, m'makampani omanga, amatha kuonedwa ngati wobwezeretsera komanso wogulitsa madzi. Matope amatope amawakopera, kotero matope onse omwe timagwiritsa ntchito amatenga nawo mbali. Kuphatikiza apo, m'magulu omanga monga gypsum gypsum, pulasitala, pulasitala utoto, imatha kugwiritsidwa ntchito ngati binder, yomwe siyingowonjezera nthawi yogwira ntchito, komanso imapangitsa utoto wowirikiza kwambiri. Mu mabo, zomata za ceremic, zokongoletsera pa pulasitiki zophatikizika, etc. zitha kunenedwa kuti hydroxypropyl meth celyl ndi wotchuka kwambiri chifukwa cha mankhwala omanga.
M'mafakitale ena, kupanga mbiya kupanga kwaumba, zitha kugwiritsidwa ntchito ngati chomatira popanga porcelat ndi mbiya; Mu buku la lacquer ndi kusindikiza ukati, Itha kugwiritsidwa ntchito ngati ufa wotayirira, wotupa, wosungunuka, komanso chifukwa chofewa, mafuta otulutsa, mafuta otulutsa, etc.; Popanga polyvinyl chloride, imawonedwa ngati ufa wotayirira.
Zogulitsa zopangidwa ndi hydroxypypyuroselose kwambiri zimagwiritsidwa ntchito kwambiri pakusintha zipatso ndi ndiwo zamasamba, mankhwala, zamasamba zikopa. Ndiwotetezeka komanso osakhumudwitsa, osakwiyitsa thupi la munthu mucous ndi zikopa, ndipo amathanso kugwiritsidwa ntchito ngati chakudya. Komabe, pa nkhani yeniyeni ya nkhaniyi, fumbi lake limatha kuwononga mpweya, ndipo sikothandiza kukonza khungu kuti lizipatula kumoto kuti mupewe kuphulika.
Palinso kuchuluka kwa hydroxypropyl methylcellulose hpmc omwe amagwiritsidwa ntchito pogwiritsa ntchito katswiri, kutentha kwa matope ndi "mtundu wofunidwa ndi makasitomala". Iliyonse ndi yosiyana. Nthawi zambiri, pali pakati pa 4 kg ndi 5 kg. Mwachitsanzo, utoto wa matope mu Beijing ndi 5 kg; Ambiri a Guizhou ndi 5 makilogalamu m'chilimwe ndi makilogalamu 4,5 nthawi yozizira; Yunnan ali ndi zochepa, nthawi zambiri 3 kg-4 kg ndi zina zotero. Kuchuluka kwa kuwonjezera pang'onopang'ono kulikonse, ndipo zofunikira za matope ufa ndizosiyananso kulikonse.
kusungidwa kwamadzi
Ma hydroxypropyl a methylcellulose yomanga madzi mopitirira muyeso, ndipo madzi amayenera kusungidwa mu pulasitala momwe angathere nthawi yomwe gypsum imakhazikika. Katundu wapaderawu amatchedwa kusungidwa kwamadzi ndipo ali ndi mphamvu mwachindunji ndi mafayilo a hydroxypropyll meth methylcellulose yankho la ntchito yomanga mu pulasitala. Njira yothetsera vutoli, yomwe ilipo kwambiri.
Anti-sagging
Matope ndi katundu wapadera wa anti-saging angagwiritsidwe ntchito ndi kutsuka popanda kukwawa, zomwe zikutanthauzanso kuti kutonthoza komwe sikungasinthe ngati ntchito yake ikayamba.
Chepetsani mamasukidwe ndikuwongolera zomanga
Pambuyo powonjezera njira zosiyanasiyana zomanga methylcellulose zinthu, pulasitala wobiriwira wa gypsum mofatsa amatha kupangidwa mofatsa. Ikawoneka yoyenera komanso yotsika-ydroxpyl-hydroxpyl-ydroxyllulose ya methylcellulose imagwiritsidwa ntchito, kuchuluka kwa ma vidiyo kumachepetsedwa ndikumanga kumakhala kosavuta. Komabe, kusasunga kwamadzi kwa hydroxpyupyl methylcellulose kuti ntchito yomanga ikuwoneka bwino, ndipo ndikofunikira kuwonjezera kuchuluka kwa zowonjezera.
Mapulogalamu apulasitili
Kwa matope okhazikika owuma, ndizachuma kwambiri kupanga kukula kwa matope, omwe amatha kupezeka powonjezera madzi pang'ono ndi thovu. Komabe, ngati kuchuluka kwa madzi ndi thovu ndi motalika kwambiri, mphamvu ndi yopunduka.
Post Nthawi: Nov-11-2021