Kukhazikitsidwa koyambirira kwa Hec ndi HPMC

Hec (hydroxyethyl cellulose) ndi hpmc (hydroxypypyupyl) ndi awiri omwe amagwiritsidwa ntchito nthawi zambiri zochokera kumasupe, zomwe zimagwiritsidwa ntchito kwambiri m'mafashoni ambiri. Zipangizozi zakhala zida zofunika kwambiri chifukwa cha zakuthupi zawo zapadera komanso zamankhwala.

1. Hec (hydroxyethyl cellulose)

1.1 kapangidwe koyambira ndi katundu
Hec ndi polymer wopanda main-solice omwe amapezeka ndi kusintha kwa mankhwala a cellulose. Kapangidwe kake koyambira ndi kuyambitsa kwa hydroxyethyl miniti oyang'anira mafupa a β-d-glucose of cellulose. Chifukwa cha hydrophilicity ya gulu la hydroxyethyl mu kapangidwe kake, Hec ali ndi zosungunuka bwino komanso kutukuza m'madzi.

Hec imawonetsa zomatira bwino, mawonekedwe opanga mafilimu ndi mafuta, komanso acid- ndi alkali-ndi alkali - ali ndi zinthu zabwino. Zinthu izi zimapangitsa kuti ikhale yothandiza kwambiri, yokhazikika komanso yopanga filimu yopanga makina. Kuphatikiza apo, hec yankho limakhala ndi thixotropy, yomwe imatha kuwonetsa mafashoni apamwamba pansi pa mphamvu yotsika, ndipo ma vispon amatsikira mwachangu pansi pa mphamvu yayikulu. Khalidwe ili limapangitsa kuti likhale ndi mtengo wofunikira pakuchiza kwamadzi osiyanasiyana.

1.2 Njira Yokonzekera
Hec imakonzedwa makamaka ndikutsatira ma cellulose achilengedwe. Zida zogwiritsidwa ntchito kwambiri zimaphatikizapo magwero ndi thonje ndi nkhuni, zomwe zimachitika ndi ethylene oxide pambuyo pa ma hydroxyethyl cellulose. Nthawi zonse kuchitapo kanthu, kuwongolera zochitika (monga kutentha, pH yamtengo wapatali ndi nthawi) imakhala ndi chinthu chofunikira pamlingo wolowa m'malo omaliza.

1.3 magawo ogwiritsira ntchito
Hec imagwiritsidwa ntchito kwambiri pazomangira, zokumba, mankhwala ndi mankhwala ndi chakudya. Mu zomangamanga, hec imagwiritsidwa ntchito kwambiri pa matope a simenti ndi gypsum monga chothandiza kwambiri komanso chokhazikika kuti chikhale chosintha ndi zida zankhondo. Mu makampani ophatikizira, hec imatha kugwiritsidwa ntchito ngati thickier ndi rheology yosintha zokutira zochokera kumadzi kuti zithandizire kutsanzira ndi kosalala. M'mankhwala tsiku lililonse monga shampoo ndi ma snitizer, hec amagwiritsidwa ntchito ngati thickir ndi yire kuti apereke malonda kukhala omasuka komanso okhazikika. Kuphatikiza apo, m'mafakitale a mankhwala ndi chakudya, ngwazi yomwe imagwiritsidwa ntchito pa mapiritsi, kanema wakale pa makapisozi, ndi kukula ndi kusungunuka kwa chakudya chifukwa cha kusowa kwa zinthu zabwino.

2. Hpmc (hydroxypropyl methylcellulose)

2.1 kapangidwe koyambirira ndi katundu
HPMC ndi ma cellulose osakhala eather eyather eyather eyambo omwe adalandira poyambitsa hydroxypyl ndi magulu a methoxy mu mafupa a cellulose. Zofanana ndi Hec, HPMC ili ndi madzi abwino kuthira madzi, kukula, filimu yopanga katundu ndi zopanda pake. Chifukwa cha methoxy ndi ma hydroxypyl m'mapangidwe ake, HPMC siingokhala ndi kusungunuka bwino m'madzi, komanso amawonetsa ntchito zamphamvu pansi ndikuyimiliratu.

Makutu a HPMC Njira imakhudzidwa kwambiri ndi kutentha. Munthawi inayake kutentha, mafano a HPMC yankho limachepa ndi kutentha kwambiri. Kuphatikiza apo, HPMC imakhalanso ndi gel. Kutentha kwa njirayo kukupitilira phindu lina, gel osankhidwa. Katunduyu ali ndi phindu la ntchito yapadera mu minda ndi mankhwala.

2.2 Kukonzekera
Kukonzekera kwa HPMC ndikofanana ndi HeC, ndipo imachitikanso kudzera mu ma cellulose. Nthawi zambiri, ma cellulose amapereka ndi ma propyl oxide ndi methyl chloride pansi pa alkiline mikhalidwe yoyambitsa hydroxypyl ndi methoxy magulu a methor, motsatana. Mphamvu ya hpmc (monga mafakisoni, solubility ndi kutentha kwa gel) kumatha kulamulidwa moyenera ndikusintha kuchuluka kwa zomwe ndikutsatira.

2.3 Kugwiritsa Ntchito Gawo
HPMC ilinso mapulogalamu angapo mu minda yomanga, mankhwala, chakudya ndi mankhwala amchere tsiku ndi tsiku. Pomanga zida zomangira, hpmc amagwiritsidwa ntchito kwambiri mu matope a simenti ndi gypsum ngati thiccener, osunga madzi ndi osungira madzi kuti athandize kupanga magwiridwe antchito ndi kukhazikika kwa nkhaniyi. Mu gawo la mankhwala, hpmc limagwiritsidwa ntchito ngati chotsatsa cholumikizidwa, chomatira ndi kapisozi cha mapiritsi, chomwe chingayang'anire bwino kumasulidwa kwa mankhwala osokoneza bongo komanso kukonza mankhwala osokoneza bongo. M'makampani azakudya, hpmc amagwiritsidwa ntchito kwambiri ngati thiclener ndi emulsifier mu zinthu zophika, zinthu zamkaka komanso zopangitsira zopangira mawonekedwe ndi kukoma kwa zinthuzo. Kuphatikiza apo, HPMC imagwiritsidwanso ntchito kwambiri m'mankhwala amtsiku ndi tsiku monga shampoo, kuyeretsedwa, kuyeretsa nkhope, etc., kupatsa zinthu zabwino kwambiri zochulukitsa ndi mafuta.

Monga ma cellulose awiri oyambira, Hec ndi HPMC amatenga mbali yofunika kwambiri m'mafakitale ambiri. Hec amagwiritsidwa ntchito kwambiri pomanga, ndimankhwala tsiku lililonse mankhwala ndi mankhwala chifukwa cha kukula kwake kwakukulu, kupanga filimu ndi zinthu zopanda pake. Komabe, kuonanso ntchito yofunika kwambiri pantchito yomanga, mankhwala ndi mafakitale omwe ali ndi katundu wake wapadera komanso magawo onse ogwiritsa ntchito. Popita patsogolo kwa ukadaulo, kukonzekera njira yokonzekera ndi magawo ofunsira ndi magawo a zinthu ziwirizi zipitilizabe, kubweretsa mwayi waukulu pakupanga mafakitale ofananira.