1. Yintoni eyona nto isetyenziswa kakhulu yi-hydroxypropyl methyl cellulose?
I-HPMCIsetyenziswa kakhulu kwizixhobo zokwakha, iipeyinti, iiresini zokwenziwa, iiseramikhi, amayeza, ukutya, ilaphu, ezolimo, izinto zokuthambisa, icuba kunye neminye imimandla. I-HPMC inokwahlulwa ibe yi-industrial grade, i-food grade kunye ne-medical grade ngokwendlela esetyenziswa ngayo.
2. I-Hydroxypropyl methyl cellulose yahlulwe yaba ziintlobo ngeentlobo, yintoni umahluko phakathi kwazo?
I-HPMC inokwahlulwa ibe zizinto ezikhawulezileyo (isimamva sophawu "S") kunye nezishushu ezinyibilikayo, iimveliso ezikhawulezileyo, emanzini abandayo zisasazeka ngokukhawuleza, zinyamalale emanzini, ngeli xesha ulwelo alunazo iincindi, kuba i-HPMC isasazeka nje emanzini, akukho kunyibilika kokwenyani. Malunga nemizuzu emi-2, incindi yolwelo iyanda kancinci kancinci, yenza ijeli ecacileyo nenamathelayo. Iimveliso ezinyibilikayo ezishushu, ezihlanganiswe emanzini abandayo, zinokusasazeka ngokukhawuleza emanzini ashushu, zinyamalale emanzini ashushu, njengokuba ubushushu buyehla bufikelele kubushushu obuthile (ngokobushushu bejeli yemveliso), incindi ibonakala kancinci kancinci, de kube kusekwe i-colloid ebonakalayo enencindi.
3. Ungawubona njani umgangatho we-hydroxypropyl methyl cellulose ngokulula nangokuqondakalayo?
1) ubumhlophe, nangona ubumhlophe bungenakukwazi ukumisela ukuba i-HPMC ilungile na, kwaye ukuba yongezwa kwinkqubo yemveliso, iya kuchaphazela umgangatho wayo, kodwa, iimveliso ezilungileyo ikakhulu ubumhlophe bulungile.
2) ubunono: Ubunono be-HPMC ngokubanzi buyi-80 mesh kunye ne-100 mesh, i-120 injongo incinci, kokukhona incinci kokukhona ingcono.
3) ukuhanjiswa kokukhanya: I-HPMC emanzini, yenza i-colloid ecacileyo, ibona ukuhanjiswa kwayo kokukhanya, kokukhona ingena kakuhle, ichaza izinto ezinganyibilikiyo ngaphakathi, i-kettle yokusabela ngokuthe nkqo ngamaqondo alungileyo ngokubanzi, iya kuthumela ezinye ze-kettle yokusabela ngokuthe nkqo, kodwa ayinakuchaza umgangatho wemveliso yekettle ethe nkqo ingcono kunokuvelisa ikettle, kukho izinto ezininzi ezimisela umgangatho wemveliso.
4) umlinganiselo: xa umlinganiselo umkhulu, xa ubunzima bungaphezulu, kungcono kunowokuqala, ngokubanzi ngenxa yomxholo ophezulu we-hydroxypropyl ngaphakathi, umxholo we-hydroxypropyl uphezulu, ukugcinwa kwamanzi kubhetele.
4. Ziziphi iindlela zokunyibilikisa i-hydroxypropyl methyl cellulose?
1) Zonke iimodeli zingongezwa kwisixhobo ngendlela yokuxuba eyomileyo;
2) Kufuneka yongezwe ngqo kwisisombululo samanzi esiqhelekileyo sobushushu, kungcono ukusebenzisa amanzi abandayo asasazwayo, emva kokongeza ngokubanzi kwimizuzu eli-10-90 ukuze ibe nkulu (vuselela uvuselele uvuselele)
3) Iimodeli eziqhelekileyo zinganyibilikiswa emva kokuxuba nokuchithachitha ngamanzi ashushu kunye nokongeza amanzi abandayo emva kokuxuba nokuphola;
4) Xa kunyibilika, ukuba kwenzeka into yokuba kuhlanganiswe izinto ezininzi, kungenxa yokuba ukuxuba akwanelanga okanye imodeli eqhelekileyo yongezwa ngqo emanzini abandayo. Ngeli xesha, kufuneka ixutywe ngokukhawuleza.
5) Ukuba kuvela amaqamza ngexesha lokunyibilika, anokususwa ngokuma iiyure ezi-2 ukuya kwezili-12 (ixesha elithile lixhomekeke ekuqineni kwesisombululo) okanye ngokufaka ulwelo kunye nokucinezela, okanye ngokongeza isixa esifanelekileyo searhente yokucoca.
I-hydroxypropyl methyl cellulose kwi-volume ye-putty powder?
I-HPMC isetyenziswa ngokwenene ngokwesimo sezulu, ubushushu, umgangatho we-calcium engwevu yendawo, ifomula yomgubo we-putty kunye neemfuno zabathengi zomgangatho owahlukileyo, kwaye kukho umahluko, ngokubanzi phakathi kweekhilogram ezi-4-5.
6. Iyintoni i-viscosity efanelekileyo ye-hydroxypropyl methyl cellulose?
Umgubo wePutty ngokubanzi ufikelela kwiitoti ezili-100000, iimfuno zodaka ziphezulu, ukuya kwi-150000 zilungile, kwaye indima ebaluleke ngakumbi yiHPMC kukugcinwa kwamanzi, kulandele ukuqina. Kwiputty powder, lo gama nje ukugcinwa kwamanzi kulungile, i-viscosity iphantsi (7-8), kunokwenzeka, ewe, i-viscosity inkulu, ukugcinwa kwamanzi kungcono, xa i-viscosity ingaphezulu kwe-100,000, i-viscosity yokugcinwa kwamanzi ayininzi kangako.
7. Zeziphi izinto eziphambili ze-hydroxypropyl methyl cellulose?
I-HPMCizinto eziphambili zokwenza imveliso: umqhaphu ocoliweyo, i-chloromethane, i-propylene oxide, ezinye izinto zokwenza imveliso, i-tablet alkali, i-acid toluene.
8. I-Hydroxypropyl methyl cellulose ekusetyenzisweni kwe-putty powder, indima ephambili, ingaba yikhemikhali?
Kwi-putty powder, ukuqina, ukugcinwa kwamanzi kunye nokwakhiwa kwemisebenzi emithathu. Ukuqina, i-cellulose inokujiya ide imiswe, ukuze isisombululo sihlale silingana phezulu nasezantsi njengendima yokulwa nokuxhoma. Ukugcinwa kwamanzi: yenza i-putty powder yome kancinci, i-calcium engwevu encedisayo kwisenzo se-reaction yamanzi. Ukwakhiwa: i-cellulose lubrication, inokwenza i-putty powder ibe nolwakhiwo oluhle. I-HPMC ayithathi nxaxheba kuyo nayiphi na i-chemical reactions, kodwa idlala indima exhasayo kuphela.
9. i-hydroxypropyl methyl cellulose yi-non-ionic cellulose ether, ngoko ke yintoni i-non-ionic?
Ngokwembono yabantu nje, izinto ezingasebenziyo azinanxaxheba kwiimpendulo zamakhemikhali.
I-CMC (i-carboxymethyl cellulose) yi-cationic cellulose, ngoko ke i-concounter grey calcium iya kuba yintsalela ye-bean curd.
10. Ziziphi izalathisi eziphambili zobugcisa ze-hydroxypropyl methyl cellulose?
Umxholo weHydroxypropyl
Umxholo weMethyl
ukuxinana
uthuthu
Ukunciphisa umzimba owomileyo
11. Yintoni enxulumene nobushushu bejeli ye-hydroxypropyl methyl cellulose?
Ubushushu bejeli ye-HPMC bunxulumene nomxholo we-methoxyl, okukhona umxholo we-methoxyl uphantsi, kokukhona ubushushu bejeli buphezulu.
Ubudlelwane phakathi kwe-12 putty powder kunye ne-hydroxypropyl methyl cellulose?
Ukuba i-HPMC ayigcini kakuhle amanzi, iya kubangela umgubo.
I-13 hydroxypropyl methyl cellulose ekusetyenzisweni komgubo we-putty, i-putty powder bubble yintoni isizathu?
I-HPMC kwi-putty powder, ukuqina, ukugcinwa kwamanzi kunye nokwakhiwa kweendima ezintathu, unobangela weqamza:
1. ) Amanzi amaninzi kakhulu ayongezwa.
2. ) Umaleko ongaphantsi awomileyo, uze ukrwele umaleko kuwo, nto leyo elula ukuyenza ibe namadyungudyungu.
14. Yintoni umahluko phakathi kwe-hydroxypropyl methyl cellulose enyibilikayo ngokukhawuleza emanzini abandayo kunye ne-heat-soluble methyl cellulose kwinkqubo yemveliso?
Uhlobo lwesisombululo samanzi abandayo se-HPMC lusetyenziswa emva konyango lomphezulu we-glyoxal, lufakwa emanzini abandayo ngokukhawuleza, kodwa alunyibiliki, i-viscosity iyanda, iyanyibilika. Uhlobo olunyibilikayo aluzange luphathwe nge-glyoxal kumphezulu. Ubungakanani be-glyoxal bukhulu, ukusasazeka kuyakhawuleza, kodwa i-viscosity iyacotha, ubuninzi buncinci, ngokuchaseneyo.
15. Yintoni le ithethwayo ngevumba le-hydroxypropyl methyl cellulose?
I-HPMC eveliswa ngendlela yesinyibilikisi yenziwe nge-toluene kunye ne-isopropyl alcohol. Ukuba ukuhlamba akukuhle kakhulu, kuya kubakho incasa eseleyo. (Ukubuyiselwa kwe-neutralization yinkqubo ephambili yevumba)
16. Ungayikhetha njani i-hydroxypropyl methyl cellulose efanelekileyo yokusetyenziswa ngeendlela ezahlukeneyo?
Umgubo wePutty: iimfuno zokugcina amanzi aphezulu, ukuhambelana kakuhle kolwakhiwo (umgangatho ocetyiswayo: 75AX100000)
Udaka oluqhelekileyo olusekwe kwisamente: ukugcinwa kwamanzi aphezulu, ukumelana nobushushu obuphezulu, ukuxinana kwangoko (umgangatho ocetyiswayo: 75AX150000)
Ukusetyenziswa kweglue yokwakha: iimveliso ezikhawulezileyo, ukuxinana okuphezulu. (Inombolo yophawu olucetyiswayo: 75AX200000S)
Udaka lweGypsum: ukugcinwa kwamanzi amaninzi, ubuninzi obuphakathi nobuphantsi, ubuninzi obukhawulezileyo (udidi olucetyiswayo: 75AX75000)
17. Lithini igama lesiteketiso le-hydroxypropyl methyl cellulose?
I-HPMC okanye i-MHPC elibizwa ngokuba yi-hydroxypropyl methyl cellulose, i-cellulose hydroxypropyl methyl ether.
18. Yintoni umahluko phakathi kwe-hydroxypropyl methyl cellulose kunyeMC?
I-MC yi-methyl cellulose, yikotoni ecociweyo emva konyango lwe-alkali, i-methane chloride njenge-etherifying agent, ngokusebenzisa uthotho lweempendulo kwaye yenziwe nge-cellulose ether, inqanaba eliqhelekileyo lokutshintshwa yi-1.6-2.0, inqanaba elahlukileyo lokunyibilika kokutshintshwa nalo lahlukile, lelo le-non-ionic cellulose ether.
(1) Ukugcinwa kwamanzi kwe-methyl cellulose kuxhomekeke kubungakanani bayo bokongeza, i-viscosity, ubunono beentwana kunye nesantya sokunyibilika. Ngokubanzi, ubungakanani bokongeza bukhulu, ubunono buncinci, i-viscosity inkulu, izinga lokugcina amanzi liphezulu, ubungakanani bokongeza bunempembelelo enkulu kwizinga lokugcina amanzi, i-viscosity kunye nesantya sokugcina amanzi asingaphantsi kunobudlelwane, izinga lokunyibilika lixhomekeke kakhulu kwinqanaba lokuguqulwa komphezulu kunye nobunzima beentwana zeentwana zeentwana ze-cellulose. I-Methyl cellulose kunye ne-hydroxypropyl methyl cellulose kwii-ethers ezininzi ze-cellulose ezingentla zinezinga eliphezulu lokugcinwa kwamanzi.
(2) I-Methyl cellulose inokunyibilika emanzini abandayo, amanzi ashushu kuya kuba nzima ukuwanyibilikisa, isisombululo sayo samanzi esikwi-pH = 3-12 sizinzile kakhulu, kwaye istatshi, njl.njl., kunye nee-surfactants ezininzi zihambelana kakuhle, xa ubushushu bufikelela kubushushu be-gelation, kuya kubakho i-gelation phenomenon.
(3) Utshintsho kubushushu luya kuyichaphazela kakhulu izinga lokugcina amanzi kwi-methyl cellulose, ngokubanzi, xa ubushushu buphezulu, kokukhona ukugcinwa kwamanzi kubi. Ukuba ubushushu be-mortar budlula ama-40 degrees, ukugcinwa kwamanzi kwi-methyl cellulose kuya kuba kubi kakhulu, nto leyo echaphazela kakhulu ukwakhiwa kwe-mortar.
(4)I-Methyl celluloseinempembelelo ecacileyo ekwakhiweni nasekunamatheleni kwesamente. Ukunamathela apha kubhekisa kumandla okuncamathela avakalayo phakathi kwesixhobo kunye nesiseko sodonga ngumsebenzi, oko kukuthi, ukumelana nokucheba kwesamente. Ukunamathela kukhulu, ukumelana nokucheba kwesamente kukhulu, amandla afunekayo kubasebenzi kwinkqubo yokusetyenziswa nawo makhulu, kwaye ukwakhiwa kwesamente kuphantsi.
Ixesha leposi: Epreli-25-2024