I-HPMC (Hydroxypropyl Methylcellulose)yinto esetyenziswa ngokuqhelekileyo i-polymer compound esetyenziswa ngokubanzi kwi-adhesives. Idlala indima ebalulekileyo kwiinkalo ezininzi zokunamathela.
1. Umsebenzi wearhente yokutyebisa
I-HPMC yi-thickener esebenzayo enokuphucula ngokubonakalayo i-viscosity kunye nokuzinza kwezinto zokuncamathelisa. Isakhiwo sayo se-molecular sine-hydrophilicity eyomeleleyo kunye ne-polysaccharide chain, kwaye inokwenza isisombululo esifanayo se-colloidal emanzini okanye kwi-solvents eziphilayo. Olu phawu lunokuthintela ngokufanelekileyo i-adhesive kwi-delaminating okanye ukulungiswa ngexesha lokugcinwa kunye nokusetyenziswa, ngaloo ndlela iqinisekisa ukufana kwe-adhesive.
2. Ukuphuculwa kokusebenza kokubambelela
I-HPMC ineempawu ezibalaseleyo zokuncamathelisa kwaye inokuphucula kakhulu ukuncamatheliswa kokuncamathela kwi-substrate. Emva kokugqunywa kumphezulu we-substrate, iimolekyuli ze-HPMC zinokungena kwi-pores entle kumphezulu wokuphucula amandla okubopha kwaye ilungele izinto ezahlukeneyo ezifana nephepha, ifayibha, iinkuni kunye neeseramikhi.
3. Iimpawu zokwenza ifilimu
HPMCineempawu ezibalaseleyo zokwenza ifilimu kwaye inokukhawuleza ukwenza ifilimu efanayo kunye neqhubekayo emva kokugquma. Le filimu inobunzima obuhle kunye no-elasticity kwaye inokubonelela ngoluhlu olongezelelweyo lokukhusela i-adhesive, ukuphucula ukuqina kunye nokungangeni kwamanzi kwebhondi. Ukongezelela, ifilimu iyanciphisa impembelelo yeendawo zangaphandle, ezifana nomswakama okanye utshintsho lweqondo lokushisa, ekusebenzeni kwe-adhesive.
4. Ukugcinwa kwamanzi
HPMCinomthamo ogqwesileyo wokugcina amanzi kwaye inokutshixa ukufuma kwincamathelisa ukunqanda ilahleko enkulu yamanzi. Olu phawu lubaluleke kakhulu kwi-adhesives yamanzi kunye ne-cement-based based materials, enokwandisa ixesha lokuvula, iququzelele ukwakhiwa, kwaye igweme ukomisa i-shrinkage okanye ukuwohloka kokusebenza kokubambisana okubangelwa ukukhuphuka kwamanzi ngokukhawuleza.
5. Isiphumo sokuzinzisa
I-HPMC inokuphucula kakhulu uzinzo lwenkqubo yokuncamathelisa, ukuthintela ukumisa okanye ukuhlanganisana kwamasuntswana aqinileyo, nokugcina ukufana kwemveliso. Amaqela asebenzayo kwikhonkco layo le-molecular angaphinda asebenze ngokubambisana namanye amacandelo ukuphucula ukuzinza kunye nokusebenza kwefomula.
6. Ukuvumelana nokusingqongileyo
I-HPMC yimveliso efunyenwe ngokuguqulwa kweekhemikhali zeselulosi yendalo. Ayinatyhefu, ayinabungozi kwaye iyabola. Ukusetyenziswa kwayo kwii-adhesives kuhambelana neemfuno zanamhlanje zokusingqongileyo kwaye kunenzuzo ebalulekileyo ngokukodwa kumashishini okwakha, ukupakisha kunye nokutya.
7. Lungisa irheology
Iimpawu ezikhethekileyo ze-rheological ze-HPMC kwisisombululo (njenge-shear thinning) yenza ukuba i-adhesive ibe neepropati ezilungileyo zokwakha ngexesha lokufaka isicelo. I-viscosity yayo iyancipha phantsi kweemeko eziphezulu zokucheba, okwenza kube lula ukupeyinta, ukutshiza okanye ukukrazula, ngelixa i-viscosity yayo ibuyisela phantsi kweemeko eziphantsi zokucheba, iqinisekisa ukubambelela kakuhle kwezinto kwi-substrate.
Iindawo zesicelo
Njengenxalenye ebalulekileyo yokuncamathelisa, i-HPMC isetyenziswa ngokubanzi kwezi nkalo zilandelayo:
Ishishini lokwakha: njenge-adhesive tile, i-putty powder, udaka olomileyo oluxutyiweyo, olusetyenziselwa ukuphucula ukusebenza kolwakhiwo kunye namandla okudibanisa.
I-adhesive ye-Woodworking: Phucula umphumo wokudibanisa phakathi komthi kunye nokuthintela ukuqhekeka.
Ukwenza iphepha kunye nokuprinta: isetyenziselwa ukugquma ngephepha ukunyusa ukuguda kunye nokunamathela.
I-textile kunye nesikhumba: isetyenziselwa ukusetyenzwa kwefayibha kunye nokubopha ngesikhumba.
HPMCidlala iindima ezininzi kwizinto zokuncamathelisa ezifana nokujiya, ukugcinwa kwamanzi, ukuzinzisa, ukomeleza ukuncamathela kunye nokwenza ifilimu. Kananjalo ineenzuzo zokusingqongileyo kunye ne-rheology ehlengahlengiswayo. Ezi zakhiwo zenza ukuba ibe yinto eyimfuneko kwaye ibalulekileyo ekuqulunqweni kwe-adhesive, ukubonelela ngenkxaso ebalulekileyo yokuphucula ukusebenza kwemveliso kunye nokuhlangabezana neemfuno ezahlukeneyo.
Ixesha lokuposa: Nov-23-2024