Njira zopangira ndi magawo ogwiritsira ntchito HPMC

1. Mau oyamba a Hydroxypropyl Methylcellulose (HPMC)

Hydroxypropyl Methylcellulose (HPMC)ndi ether yopanda ionic cellulose yopangidwa kuchokera ku ulusi wa thonje wachilengedwe kapena zamkati zamatabwa kudzera mukusintha kwamankhwala. HPMC ali bwino madzi solubility, thickening, bata, filimu kupanga katundu ndi biocompatibility, choncho chimagwiritsidwa ntchito yomanga, mankhwala, chakudya, mankhwala tsiku ndi zina.

2. Njira zopangira HPMC

Kupanga kwa HPMC kumaphatikizapo njira zotsatirazi:

Kukonzekera zakuthupi

Zopangira zazikulu za HPMC ndi cellulose yachilengedwe yoyera kwambiri (kawirikawiri kuchokera ku thonje kapena zamkati zamatabwa), zomwe zimafunikira chithandizo choyambirira kuti muchotse zonyansa ndikuwonetsetsa kuyera komanso kufanana kwa cellulose.

Chithandizo cha alkaliization

Ikani mapadi mu riyakitala ndi kuwonjezera mlingo woyenera wa sodium hydroxide (NaOH) njira kutupa mapadi mu malo amchere kupanga zamchere mapadi. Izi zitha kuonjezera ntchito ya mapadi ndi kukonzekera wotsatira etherification zimachitikira.

Etherification reaction

Kutengera pa cellulose ya alkali, ma methylating agents (monga methyl chloride) ndi hydroxypropylating agents (monga propylene oxide) amayambitsidwa kuti achite etherification reaction. Zimene nthawi zambiri ikuchitika mu chatsekedwa mkulu-anzanu riyakitala. Pa kutentha kwina ndi kupanikizika, magulu a hydroxyl pa cellulose amasinthidwa ndi magulu a methyl ndi hydroxypropyl kupanga hydroxypropyl methylcellulose.

Kutsuka kwa Neutralization

Pambuyo anachita, mankhwala angakhale ndi zosakhudzidwa reagents mankhwala ndi mankhwala, choncho m`pofunika kuwonjezera asidi njira mankhwala neutralization, ndiyeno kusamba ndi kuchuluka kwa madzi kapena organic zosungunulira kuchotsa otsalira zamchere zinthu ndi zosafunika.

Kutaya madzi m'thupi ndi kuyanika

Njira yotsuka ya HPMC imapangidwa ndi centrifuged kapena kusefa kuti ichotse madzi ochulukirapo, ndiyeno ukadaulo wowumitsa wocheperako umagwiritsidwa ntchito kupanga ufa wowuma kapena ma flakes kuti asunge mawonekedwe akuthupi ndi mankhwala a HPMC.

Kupera ndi kuwunika

HPMC zouma zimatumizidwa ku zida zopera kuti ziphwanyidwe kuti zipeze ufa wa HPMC wamitundu yosiyanasiyana. Pambuyo pake, kuwunika ndikuyika ma grading kumapangidwa kuti zitsimikizire kufanana kwa chinthucho kuti chikwaniritse zofunikira zosiyanasiyana.

Kupaka ndi kusunga

Pambuyo poyang'anitsitsa bwino, mankhwala omaliza amapakidwa molingana ndi ntchito zosiyanasiyana (monga 25kg / thumba) ndikusungidwa pamalo owuma ndi mpweya wabwino kuti ateteze chinyezi kapena kuipitsidwa.

3. Magawo akuluakulu ogwiritsira ntchito HPMC

Chifukwa cha kukhuthala bwino, kupanga mafilimu, kusunga madzi, emulsifying ndi biocompatibility properties, HPMC yakhala ikugwiritsidwa ntchito kwambiri m'mafakitale ambiri:

Makampani omanga

HPMC ndi chowonjezera chofunika kwa zomangira, makamaka ntchito:

Tondo la simenti: onjezerani madzi akumanga, onjezerani kumamatira, ndikupewa kutaya madzi ambiri.

Zomatira za matailosi: onjezerani kusungidwa kwa madzi kwa zomatira matailosi ndikuwongolera ntchito yomanga.

Zogulitsa za Gypsum: sinthani kukana kwa ming'alu ndikugwira ntchito pomanga.

Putty ufa: sinthani kumamatira, kukana ming'alu ndi kuthekera kotsutsa-sagging.

Pansi pawokha: kumawonjezera madzimadzi, kukana kuvala komanso kukhazikika.

Makampani opanga mankhwala

HPMC chimagwiritsidwa ntchito m'munda mankhwala monga:

Kuphimba ndi kupanga mafilimu pamapiritsi a mankhwala: sinthani kukhazikika kwa mankhwala ndikuwongolera kuchuluka kwa kutulutsidwa kwa mankhwala.

Kukonzekera kosalekeza ndi kumasulidwa kolamulirika: kugwiritsidwa ntchito m'mapiritsi otulutsidwa mosalekeza ndi zipolopolo za capsule zoyendetsedwa bwino kuti zithetse kutulutsidwa kwa mankhwala.

Makapisozi olowa m'malo: amagwiritsidwa ntchito popanga makapisozi amasamba (makapisozi amasamba).

4. Makampani opanga zakudya

HPMC imagwiritsidwa ntchito ngati chowonjezera cha chakudya makamaka pa:

Thickener ndi emulsifier: amagwiritsidwa ntchito pophika, jellies, sauces, etc.

Stabilizer: amagwiritsidwa ntchito mu ayisikilimu ndi mkaka kuti aletse kugwa kwa mapuloteni.

Chakudya chamasamba: chimagwiritsidwa ntchito ngati chokhuthala pazakudya zochokera ku mbewu m'malo mwa zolimbitsa thupi zochokera ku nyama monga gelatin.

Daily Chemical industry

HPMC ndi chinthu chofunikira pa zodzoladzola ndi zinthu zosamalira munthu:

Mankhwala osamalira khungu: amagwiritsidwa ntchito mu mafuta odzola, masks amaso, ndi zina zotero kuti apereke chinyezi ndi kukhazikika.

Shampoo ndi gel osamba: onjezerani kukhazikika kwa thovu ndikuwongolera kukhuthala.

Otsukira m'mano: amagwiritsidwa ntchito ngati thickener ndi moisturizer kuti kukoma.

Utoto ndi inki

HPMC ili ndi zinthu zabwino zopangira mafilimu komanso kukhazikika kwa kuyimitsidwa ndipo ingagwiritsidwe ntchito pa:

Utoto wa latex: sinthani kusungunuka ndi kumveka kwa utoto ndikuletsa mvula.

Inki: Sinthani rheology ndikusintha mtundu wosindikiza.

Mapulogalamu ena

HPMC itha kugwiritsidwanso ntchito pa:

Makampani a Ceramic: Monga chomangira, onjezerani mphamvu zazitsulo za ceramic.

Ulimi: Amagwiritsidwa ntchito poyimitsa mankhwala ophera tizilombo ndi zokutira mbewu kuti azitha kukhazikika.

Makampani opanga mapepala: Monga chothandizira, sinthani kukana kwamadzi ndi kusindikiza kwa pepala.

Mtengo wa HPMCndi zinthu zomwe zimagwiritsidwa ntchito polima, zomwe zimagwiritsidwa ntchito kwambiri pomanga, mankhwala, chakudya, mankhwala a tsiku ndi tsiku, zokutira ndi mafakitale ena. Kupanga kwake kumaphatikizapo pretreatment yaiwisi, alkalization, etherification, kutsuka, kuyanika, kugaya ndi masitepe ena, ulalo uliwonse umakhudza mtundu wa chomaliza. Ndikusintha kwachitetezo cha chilengedwe komanso kukula kwa msika, ukadaulo wopanga wa HPMC ukukulitsidwanso kuti ukwaniritse zosowa zamafakitale ambiri.