1. Loluphi usetyenziso oluphambili lwe-hydroxypropyl methyl cellulose?
HPMCisetyenziswa kakhulu kwizinto zokwakha, iingubo, iintlaka zokwenziwa, iiseramikhi, amayeza, ukutya, amalaphu, ezolimo, izithambiso, icuba kunye namanye amashishini. I-HPMC inokohlulwa ibe kwibakala loshishino, ibakala lokutya kunye nenqanaba lezonyango ngokusetyenziswa.
2. IHydroxypropyl methyl cellulose yahlulwe yaba ziindidi ezininzi, yintoni umahluko phakathi kwazo?
I-HPMC inokohlulwa ibe yi-instant (i-brand suffix "S") kunye ne-soluble eshushu, iimveliso ezikhawulezayo, emanzini abandayo ngokukhawuleza zichithwa, zanyamalala emanzini, ngeli xesha ulwelo alunayo i-viscosity, kuba i-HPMC isasazeke emanzini, akukho ukuchithwa kwangempela. Malunga nemizuzu emi-2, i-viscosity ye-liquid iyanda ngokuthe ngcembe, yenza i-gel ecacileyo kunye ne-sticky. Iimveliso ezinyibilikayo zobushushu, ezifakwe emanzini abandayo, zinokusasazeka ngokukhawuleza emanzini ashushu, zinyamalale emanzini ashushu, njengokuhla kweqondo lobushushu kwiqondo elithile lobushushu (ngokobushushu bejeli yemveliso), i-viscosity ibonakala kancinci, de kube yi-colloid ebonakalayo ebonakalayo.
3. Ungawubona njani umgangatho we-hydroxypropyl methyl cellulose ngokulula nangokuqondayo?
1) ubumhlophe, nangona ubumhlophe bungenako ukugqiba ukuba i-HPMC ilungile, kwaye ukuba yongezwa kwinkqubo yokuvelisa i-whitener, iya kuchaphazela umgangatho wayo, kodwa, iimveliso ezilungileyo ubukhulu becala ubumhlophe bulungile.
2) ukucoleka: Ukulunga kwe-HPMC ngokuqhelekileyo yi-80 ye-mesh kunye ne-100 mesh, i-120 injongo encinci, i-coner ingcono.
3) ukukhanya okudluliswayo: I-HPMC emanzini, isenza i-colloid ecacileyo, ibone ukukhanya kwayo, i-penetrability enkulu, ichaza i-insolubles encinci ngaphakathi, i-kettle yokusabela ngokuthe nkqo ngamadigri ngokuqhelekileyo ilungile, iya kuthumela enye yeketile yokusabela ethe tye, kodwa ayikwazi ukuchaza umgangatho wemveliso yeketile ethe nkqo umisela umgangatho wemveliso weketile ungcono kunomgangatho wemveliso.
4) umlinganiselo: ubukhulu becala, ubunzima bungcono, kunobukhulu, ngokuqhelekileyo ngenxa yomxholo ophezulu we-hydroxypropyl ngaphakathi, umxholo we-hydroxypropyl uphezulu, ukugcinwa kwamanzi kungcono.
4. Ziziphi iindlela zokuchithwa kwe-hydroxypropyl methyl cellulose?
1) Zonke iimodeli zinokudibaniswa kwizinto eziphathekayo ngendlela yokuxuba okomileyo;
I-2) Kufuneka ifakwe ngokuthe ngqo kwisisombululo samanzi sobushushu obuqhelekileyo, kungcono ukusebenzisa ukusasazwa kwamanzi abandayo, emva kokongeza ngokubanzi kwimizuzu eyi-10-90 ukujiya (ukuvuselela ukuvuselela)
I-3) Iimodeli eziqhelekileyo zinokuchithwa emva kokuxuba kunye nokusabalalisa ngamanzi ashushu kunye nokongeza amanzi abandayo emva kokuvuselela nokupholisa;
4) Xa ukuchithwa, ukuba i-phenomenon ye-agglomerating iyenzeka, kungenxa yokuba ukuvuselela akwanelanga okanye imodeli eqhelekileyo yongezwa ngokuthe ngqo kumanzi abandayo. Ngeli xesha, kufuneka ixutywe ngokukhawuleza.
I-5) Ukuba amaqamza ayenzeka ngexesha lokuchithwa, anokususwa ngokuma kwiiyure ezingama-2-12 (ixesha elithile lixhomekeke ekulungelelaniseni isisombululo) okanye ngokucoca kunye noxinzelelo, okanye ngokongeza inani elifanelekileyo le-agent ye-defoaming.
I-5 i-hydroxypropyl methyl cellulose kumthamo we-putty powder?
HPMC kwisicelo kanye isixa, ngokusingqongileyo imozulu, ubushushu, umgangatho wekhalsiyam gray lendawo, putty powder ifomula kunye neemfuno zabathengi bomgangatho owahlukileyo, kwaye kukho iyantlukwano ngeenxa zonke, ngokubanzi phakathi 4-5 neekhilogram.
6. Yintoni i-viscosity efanelekileyo ye-hydroxypropyl methyl cellulose?
I-Putty powder ngokubanzi i-100000 inako, iimfuno zodaka ziphezulu, ukuya kwi-150000 nje kakuhle, kwaye i-HPMC ibaluleke kakhulu indima kukugcinwa kwamanzi, kulandelwa kukuqina. Kwi-putty powder, nje ngokuba ukugcinwa kwamanzi kulungile, i-viscosity iphantsi (7-8), kunokwenzeka kwakhona, ngokuqinisekileyo, i-viscosity inkulu, ukugcinwa kwamanzi okuhambelanayo kungcono, xa i-viscosity ingaphezulu kwe-100,000, i-viscosity yokugcinwa kwamanzi ayikho kakhulu.
7. Zeziphi ezona mathiriyeli ziphambili ze-hydroxypropyl methyl cellulose?
HPMCizinto eziphambili ekrwada: umqhaphu esulungekileyo, chloromethane, propylene oxide, ezinye izinto ekrwada, tablet alkali, acid toluene.
8. I-Hydroxypropyl methyl cellulose ekusebenziseni i-putty powder, indima ephambili, ingaba yimichiza?
Kwiputty powder, ukuqina, ukugcinwa kwamanzi kunye nokwakhiwa kwemisebenzi emithathu. Ukutyeba, i-cellulose inokugqithwa ukunqunyanyiswa, ukuze isisombululo sihlale sifana phezulu nasezantsi indima yokuxhoma okuchasayo. Ukugcinwa kwamanzi: yenza iputty powder yome kancinci, i-calcium encedisayo engwevu kwisenzo sokusabela kwamanzi. Ukwakhiwa: i-cellulose lubrication, inokwenza i-putty powder inokwakhiwa okulungileyo. I-HPMC ayithathi nxaxheba kuyo nayiphi na intshukumo yeekhemikhali, kodwa idlala indima exhasayo kuphela.
I-9 .hydroxypropyl methyl cellulose i-non-ionic cellulose ether, ngoko yintoni i-non-ionic?
Ngokwemigaqo ye-layman, izinto ezingenayo azithathi nxaxheba kwiikhemikhali.
I-CMC(i-carboxymethyl cellulose) yi-cationic cellulose, ngoko ke ukudibana ne-calcium engwevu kuya kuba yintsalela yebhontshisi.
10. Zeziphi iimpawu eziphambili zobugcisa ze-hydroxypropyl methyl cellulose?
Umxholo weHydroxypropyl
Umxholo weMethyl
i-viscosity
uthuthu
Ukuncipha kobunzima bomileyo
11. Yintoni enxulumene nobushushu bejeli ye-hydroxypropyl methyl cellulose?
Ukushisa kwejel ye-HPMC kuhambelana nomxholo we-methoxyl, ukuthoba umxholo we-methoxyl, ukuphakama kwe-gel.
I-12 i-putty powder drop powder kunye nobudlelwane be-hydroxypropyl methyl cellulose?
Ukuba i-HPMC ayigcini kakuhle amanzi, iya kubangela umgubo.
I-13 i-hydroxypropyl methyl cellulose ekusebenziseni i-putty powder, i-putty powder bubble yintoni isizathu?
I-HPMC kwiputty powder, ukutyeba, ukugcinwa kwamanzi kunye nokwakhiwa kweendima ezintathu, unobangela weqamza:
1. )Amanzi amaninzi ayongezwa.
2. )Uluhlu olungezantsi alomile, kwaye emva koko ukrwele umaleko kuwo, okwalula ukutyhutyha.
14. Uthini umahluko phakathi kwamanzi abandayo anokunyibilika ngokukhawuleza kunye ne-heat-soluble hydroxypropyl methyl cellulose kwinkqubo yokuvelisa?
HPMC amanzi abandayo ngoko nangoko isisombululo uhlobo emva unyango umphezulu glyoxal, ifakwe emanzini abandayo ngokukhawuleza yachithwa, kodwa hayi ngokwenene inyibilike, viscosity phezulu, inyibilika. Uhlobo lwe-thermosoluble aluzange luphathwe nge-glyoxal. Ubungakanani be-glyoxal bukhulu, ukusabalalisa ngokukhawuleza, kodwa i-viscosity iyacotha, inani lincinci, ngokuchaseneyo.
15. Yintoni malunga nevumba le-hydroxypropyl methyl cellulose?
I-HPMC eveliswa yindlela yokunyibilikisa yenziwe nge-toluene kunye ne-isopropyl alcohol. Ukuba ukuhlamba akukuhle kakhulu, kuya kubakho incasa eseleyo. (Ukubuyiswa kwe-neutralization yinkqubo ephambili yevumba)
16. Ungakhetha njani i-hydroxypropyl methyl cellulose efanelekileyo yokusetyenziswa okwahlukileyo?
I-Putty powder: iimfuno zokugcina amanzi aphezulu, ukuhambelana kakuhle kokwakhiwa (ibakala elicetyiswayo: 75AX100000)
Udaka oluqhelekileyo olusekelwe kwisamente: ukugcinwa kwamanzi aphezulu, ukumelana nobushushu obuphezulu, i-viscosity yangoko (ibakala elicetyiswayo: 75AX150000)
Ukusetyenziswa kweglue yokwakha: iimveliso ezikhawulezayo, i-viscosity ephezulu. (Inombolo yohlobo olucetyiswayo: 75AX200000S)
Udaka lweGypsum: ukugcinwa kwamanzi aphezulu, i-viscosity ephakathi kunye nephantsi, i-viscosity esheshayo (ibakala elicetyiswayo: 75AX75000)
17. Yintoni isiqhulo se-hydroxypropyl methyl cellulose?
I-HPMC okanye i-MHPC i-alias hydroxypropyl methyl cellulose, i-cellulose hydroxypropyl methyl ether.
18. Uthini umahluko phakathi kwe-hydroxypropyl methyl cellulose kunyeMC?
I-MC yi-methyl cellulose, i-cotton esulungekileyo emva konyango lwe-alkali, i-methane chloride njenge-etherifying agent, ngokusebenzisa uluhlu lweempendulo kunye ne-ether ye-cellulose, i-degree jikelele yokutshintshwa kwe-1.6-2.0, i-degree degree of substitution solubility nayo yahlukile, ye-non-ionic cellulose ether.
(1) Ukugcinwa kwamanzi kwi-methyl cellulose kuxhomekeke kwisixa sokongeza, i-viscosity, i-particle fineness kunye neqondo lokuchithwa. Ngokubanzi, isixa songezelelo sikhulu, i-fineness incinci, i-viscosity inkulu, isantya sokugcinwa kwamanzi siphezulu, isixa sokongeza sinempembelelo enkulu kwizinga lokugcinwa kwamanzi, i-viscosity kunye nesantya sokugcinwa kwamanzi alikho ngaphantsi kobudlelwane, izinga lokuchithwa lixhomekeke ubukhulu becala kwiqondo lokuguqulwa komphezulu kunye ne-particle fineness yamasuntswana e-cellulose. I-Methyl cellulose kunye ne-hydroxypropyl methyl cellulose kwezi ngasentla zininzi ze-cellulose ethers zinezinga eliphezulu lokugcinwa kwamanzi.
(2) I-Methyl cellulose inokuchithwa emanzini abandayo, amanzi ashushu aya kuba nzima ukunyibilika, isisombululo sayo samanzi kwi-pH = 3-12 uluhlu luzinzile kakhulu, kunye nesitashi, njl.
(3) Utshintsho lobushushu luya kuchaphazela kakhulu izinga lokugcinwa kwamanzi kwi-methyl cellulose, ngokubanzi, ukuphakama kweqondo lobushushu, ukugcinwa kwamanzi kubi. Ukuba ubushushu bomdaka budlula ama-40 degrees, ukugcinwa kwamanzi kwe-methyl cellulose kuya kuba kubi kakhulu, okuchaphazela kakhulu ukwakhiwa kodaka.
(4)I-Methyl cellulosekunempembelelo ebonakalayo ekwakhiweni nasekunamatheleni kodaka. Ukuncamathela apha kubhekiselele kumandla okuncamathelisa okuvakala phakathi kwesixhobo kunye ne-substrate eludongeni ngumsebenzi, oko kukuthi, ukuxhathisa kwe-shear kodaka. Ukubambelela kukhulu, ukuxhathisa kwe-shear yodaka kukhulu, amandla afunwa ngabasebenzi kwinkqubo yokusetyenziswa nawo mkhulu, kwaye ukwakhiwa kodaka kubi.
Ixesha lokuposa: Apr-25-2024