Amanyathelo emveliso kunye namasimi okusetyenziswa kwe-HPMC

1. Intshayelelo kwiHydroxypropyl Methylcellulose (HPMC)

IHydroxypropyl Methylcellulose (HPMC)yi-non-ionic cellulose ether eyenziwe ngefayibha yomqhaphu yendalo okanye ipulp yomthi ngokuguqulwa kweekhemikhali. I-HPMC inokunyibilika kwamanzi kakuhle, ityeba, izinzo, iipropati zokwenza ifilimu kunye nokuhambelana kwezinto eziphilayo, ngoko ke isetyenziswa kakhulu ekwakheni, kumayeza, ekutyeni, kwiikhemikhali zemihla ngemihla nakwezinye iindawo.

2. Amanyathelo okuvelisa i-HPMC

Ukuveliswa kwe-HPMC kuquka ikakhulu la manyathelo abalulekileyo alandelayo:

Ukulungiswa kwezinto eziluhlaza

Eyona nto iphambili kwi-HPMC yi-cellulose yendalo ecocekileyo kakhulu (edla ngokuphuma kwi-cotton okanye kwi-pulp yomthi), efuna unyango lokuqala ukususa ukungcola nokuqinisekisa ubunyulu kunye nokufana kwe-cellulose.

Unyango lwe-Alkalinization

Faka i-cellulose kwi-reactor uze wongeze isixa esifanelekileyo sesisombululo se-sodium hydroxide (NaOH) ukuze ivuvuke i-cellulose kwindawo ene-alkaline ukuze yenze i-alkali cellulose. Le nkqubo inokunyusa umsebenzi we-cellulose kwaye ilungiselele ii-etherification reactions ezilandelayo.

Impendulo ye-Etherification

Ngokusekelwe kwi-alkali cellulose, ii-methylating agents (ezifana ne-methyl chloride) kunye nee-hydroxypropylating agents (ezifana ne-propylene oxide) ziyaziswa ukuze zenze i-etherification reaction. I-reaction idla ngokwenziwa kwi-reactor evaliweyo enoxinzelelo oluphezulu. Kwiqondo lobushushu elithile kunye noxinzelelo, amaqela e-hydroxyl kwi-cellulose athatyathelwa indawo ngamaqela e-methyl kunye ne-hydroxypropyl ukuze enze i-hydroxypropyl methylcellulose.

Ukuhlamba okungathathi cala

Emva kokusabela, imveliso isenokuba neekhemikhali ezingaphendulwanga kunye neemveliso ezingasemva, ngoko ke kuyimfuneko ukongeza isisombululo se-asidi ukuze kulungiswe ukunganyangeki, uze uhlambe ngamanzi amaninzi okanye isinyibilikisi se-organic ukususa izinto eziseleyo ze-alkaline kunye nokungcola.

Ukuphelelwa ngamanzi emzimbeni kunye nokomisa

Isisombululo se-HPMC esihlanjiweyo sixutywa okanye sihluzwe ukuze kususwe amanzi angaphezulu, emva koko kusetyenziswa ubuchwepheshe bokomisa obusebenzisa ubushushu obuphantsi ukwenza umgubo owomileyo okanye iiflekhi ukugcina iipropati zomzimba nezekhemikhali ze-HPMC.

Ukusila kunye nokuhlola

I-HPMC eyomileyo ithunyelwa kwizixhobo zokusila ukuze zityunyuzwe ukuze kufunyanwe umgubo we-HPMC wobukhulu obahlukeneyo. Emva koko, kwenziwa uvavanyo kunye nokuhlelwa ukuqinisekisa ukufana kwemveliso ukuze ihlangabezane neemfuno ezahlukeneyo zokusetyenziswa.

Ukupakishwa kunye nokugcinwa

Emva kokuhlolwa komgangatho, imveliso yokugqibela ipakishwa ngokweendlela ezahlukeneyo zokusetyenziswa (ezifana ne-25kg/ibhegi) kwaye igcinwe kwindawo eyomileyo nengena umoya ukuthintela ukufuma okanye ungcoliseko.

3. Iindawo eziphambili zokusetyenziswa kwe-HPMC

Ngenxa yokuba ityebile kakuhle, ikwazi ukwenza ifilimu, igcina amanzi, iyakwazi ukuxuba kunye nokuhambelana kwezinto eziphilayo, i-HPMC isetyenziswa kakhulu kumashishini amaninzi:

Ishishini lokwakha

I-HPMC sisongezelelo esibalulekileyo kwizixhobo zokwakha, esisetyenziselwa kakhulu:

Udaka lwesamente: luphucula ukunyibilika kolwakhiwo, luphucula ukunamathela, kwaye luthintele ukulahleka kwamanzi amaninzi.

I-adhesive yethayile: yonyusa ukugcinwa kwamanzi kwe-adhesive yethayile kwaye iphucule ukusebenza kolwakhiwo.

Iimveliso zeGypsum: ziphucula ukumelana neentanda kunye nokusebenza kakuhle kolwakhiwo.

Umgubo wePutty: uphucula ukunamathela, ukumelana nokuqhekeka kunye nokukwazi ukulwa nokuwa.

Umgangatho ozimelelayo: phucula ukunyibilika, ukumelana nokuguguleka kunye nozinzo.

Ishishini lamayeza

I-HPMC isetyenziswa kakhulu kwicandelo lezonyango njenge:

I-arhente yokwaleka kunye nokwenza ifilimu kwiipilisi zamayeza: iphucula uzinzo lwamayeza kunye nokulawula izinga lokukhululwa kwamayeza.

Amalungiselelo okukhululwa okuqhubekekayo kunye nokukhululwa okulawulekayo: asetyenziswa kwiipilisi ezikhutshwayo eziqhubekekayo kunye neegobolondo zekhaphu ezikhutshwayo ezilawulekayo ukulawula ukukhululwa kwamayeza.

Izinto ezithatha indawo yeCapsule: ezisetyenziswa ekwenzeni iiCapsule zemifuno (iiCapsule zemifuno).

4. Ishishini lokutya

I-HPMC isetyenziswa njengesongezelelo sokutya ikakhulu kwi:

Isiqinisi kunye ne-emulsifier: isetyenziswa kwiimpahla ezibhakiweyo, iijeli, iisosi, njl.njl. ukuphucula incasa yokutya.

Isiqinisi: sisetyenziswa kwi-ayisikhrim nakwiimveliso zobisi ukuthintela ukuna kweeproteni.

Ukutya kwemifuno: kusetyenziswa njengesithambisi-zidlo ezisekelwe kwizityalo ukuze kuthathelwe indawo izinto ezizinzisayo ezisuka kwizilwanyana ezifana negelatin.

Ishishini leekhemikhali lemihla ngemihla

I-HPMC sisithako esibalulekileyo kwizinto zokuthambisa kunye neemveliso zokhathalelo lomntu:

Iimveliso zokhathalelo lolusu: ezisetyenziswa kwiiloshini, kwiimaski zobuso, njl.njl. ukubonelela ngokufumisa nokuqina.

I-shampoo kunye nejeli yeshawa: yonyusa uzinzo lwefoam kwaye iphucula ukuqaqamba.

Intlama yamazinyo: isetyenziswa njengesithambisi kunye nesithambisa ukuze kuphuculwe incasa.

Iipeyinti kunye neeyinki

I-HPMC ineempawu ezilungileyo zokwenza ifilimu kunye nozinzo lokumiswa kwaye ingasetyenziselwa:

Ipeyinti yeLatex: iphucula ukuxubha kunye nokwakheka kwepeyinti kwaye ithintele ukuna kwemvula.

I-inki: Iphucula i-rheology kwaye iphucule umgangatho wokuprinta.

Ezinye izicelo

I-HPMC ingasetyenziselwa oku kulandelayo:

Ishishini le-ceramic: Njengesixhobo sokubopha, phucula amandla ee-blanks ze-ceramic.

Ezolimo: Zisetyenziswa kwi-suspensions ze-pesticide kunye ne-coating yembewu ukuphucula uzinzo lwe-arhente.

Ishishini lokwenza amaphepha: Njengearhente yokulinganisa, phucula ukumelana namanzi kunye nokuprintwa kwephepha.

I-HPMCsisixhobo sepolymer esisetyenziswa kakhulu, esisetyenziswa kakhulu ekwakheni, kumayeza, ekutyeni, kwiikhemikhali zemihla ngemihla, kwiingubo nakwezinye iimboni. Inkqubo yaso yemveliso ibandakanya unyango lwezinto eziluhlaza, i-alkalizing, i-etherification, ukuhlamba, ukomisa, ukugaya kunye nezinye iindlela, ikhonkco ngalinye lichaphazela umgangatho wemveliso yokugqibela. Ngokuphuculwa kweemfuno zokhuseleko lokusingqongileyo kunye nokukhula kwemfuno yemarike, itekhnoloji yemveliso ye-HPMC nayo iyaphuculwa ukuze ihlangabezane neemfuno zamashishini amaninzi.