IBanga leSakhiwo soKwakha (HPMC) iHydroxypropyl methyl cellulose
Udaka oluxutyiweyo lwesamente lube yinxalenye ebaluleke kakhulu kushishino lodaka kwiGlobal kwaye ludlala indima ebaluleke kakhulu ngenxa yokukhuthazwa kwemarike kunye nenkxaso yelizwe yomgaqo-nkqubo.Ekuphuhlisweni kodaka, i-cellulose ether litsha-ntliziyo elibalulekileyo.
Udaka oluqhelekileyo lufuna ngokwezoqoqosho apho inqanaba le-samente lincinci, kodwa iimfuno zokusebenza kwayo kunye neempawu zokutshiza ngomatshini zisephezulu, ngoko ke ukuhlelwa kwesanti kunye nezongezo zibalulekile.Ukongezelela, ukusetyenziswa komatshini kuya kuba yinto ecacileyo yokuphuhliswa kwe-mortar edibeneyo, i-cellulose ether iya kwenza ukusetyenziswa komatshini.
Iimpawu zeMveliso
Yandisa imfuno yamanzi.
Ukugcinwa kwamanzi aphezulu, ukwandisa ixesha lokusebenza kwezinto eziphathekayo, ukuphucula ukusebenza komsebenzi, ukuphepha i-phenomenon ye-crusting, kunye nokunceda ukuphucula amandla omatshini wezinto eziphathekayo.
Ukusebenza okuphuculweyo kokusebenza, ukubonelela nge-lubrication kunye nokuthungwa okufanayo, ukwenzela ukuba ubuso bezinto eziphathekayo bulula ukusula, ngaloo ndlela kuphuculwe ukusebenza kakuhle kokwakhiwa, kunye nokuphucula ukuchasana nokuqhekeka kwe-putty.
Ukuphucula i-homogeneity, kwaye uphucule ukuchasana nokuhamba ngokuthe nkqo.
HPMC yokuncamathelisa ithayile
Iithayile zeCeramic zinomgangatho ophezulu wokusebenza kunye nokusebenza kakuhle xa zincanyathiselwe kwii-substrates ezahlukeneyo.Ukumelana ne-Skid kunye nexesha elingcono lokuvula ngundoqo kwiimfuno ezingcono zokubambelela.
HPMC for eludongeni putty
I-HPMC yi-ether ye-cellulose engeyo-ionic eyenziwe kwifayibha yomqhaphu yendalo phantsi kothotho lokusetyenzwa kweekhemikhali.Ayinavumba, ayinancasa kwaye ayinayo ityhefu engumgubo omhlophe, inokunyibilika kumanzi aqhelekileyo ukwenza isisombululo se-viscous esicacileyo kunye neempawu zokujiya, ukubopha, ukusabalalisa, i-emulsifying, ukugquma ifilimu, ukuxhoma, ukufunxa, i-gelling, ukugcinwa kwamanzi kunye nokukhusela i-colloid.
I-cellulose ethers inika ezi mpawu zilandelayo zibalaseleyo kudaka:
一Optimized ukukwazi ukumanzisa kwi substrate
一 Ikhono logcino lwamanzi oluphezulu
一 ukusebenza kakuhle kokutshiza kunye nokumpompa
一 Phucula i-cement hydration ngokudibanisa amandla
Ingcaciso yeMveliso
I-1) Imbonakalo: I-HPMC yi-ether ye-cellulose e-nonionic, i-white greyish-white powder okanye i-granule, ingenavumba kwaye ayinambitheki, i-soluble emanzini abandayo, i-glacial acetic acid, i-ethanol, i-methanol kunye ne-propylene glycol, i-soluble kancinane kwi-acetone ngokuxhomekeke kwiqondo lokuthatha indawo. ayinyibiliki ngokupheleleyo emanzini ashushu, ethylene glycol kunye netoluene.I-HPMC inyibilika kumxube we-10% ye-methanol kunye ne-90% ye-methylene chloride ukwenza izisombululo ze-colloidal.
2) Isisombululo se-HPMC sinomsebenzi ongaphezulu, ukukhanya okuphezulu, kunye nokusebenza okuzinzileyo.Xa kushushu kwiqondo elithile lobushushu, isisombululo siba ngamafu okanye senze ijeli ehlumayo.Nangona kunjalo, isisombululo siyacaca kwakhona emva kokupholisa.Iindidi ezahlukeneyo ze-HPMC zinobushushu obuhlukeneyo be-gelation.I-solubility iyahluka kunye ne-viscosity.I-viscosity ephantsi, i-solubility ephezulu inayo.Iindidi ezahlukeneyo ze-HPMC zahlukile kwezinye iipropati kwaye ukunyibilika kwazo emanzini akuchatshazelwa yi-pH.
3) Ubungakanani be-particle: 100% izinga lokupasa kwi-80 mesh.
4) Ubuninzi obubonakalayo: 0.25-0.70 g / mL (ngokuqhelekileyo malunga ne-0.5 g / mL), ubuninzi obuthile 1.26-1.31mL.
5) Ubushushu bokutshintsha umbala: 190-200 ° C;Ubushushu beCarbonization: 280-300°C.
I-6) Uxinzelelo lomphezulu: 42-56 dyn / cm (2% isisombululo samanzi).
I-7) Umxholo ophezulu we-methoxy kwi-HPMC, ubushushu obuphantsi be-gelation, kunye ne-solubility ephezulu emanzini kunye nomsebenzi womphezulu.
8) I-HPMC inezinye iimpawu, umzekelo, ukuqina kwepropati, ukuzinza kwe-pH, ukugcinwa kwamanzi, ipropati ebalaseleyo yokwenza ifilimu, ukusabalalisa okulungileyo kunye nokukwazi ukunamathela.
Iiparamitha zeenkcukacha
| Into | Isalathiso |
| Umxholo weMethoxyl (%) | 24.0-30.0 |
| Umxholo weHydroxy propyl (%) | 7.0-12.0 |
| Ubushushu be-gelation | 54℃—90℃ |
| Ukufuma | 5% max |
| Uthuthu | 5% max |
| PH ixabiso | 6—8 |
| Imbonakalo | Umgubo omhlophe |
| Ukomelela | 80-100umnatha |
| Viscosity | I-100 ukuya kwi-200000 ingenziwa ngokwezifiso |
