Cellulose ether, kunyanya hydroxypropyl methylcellulose (HPMC), chinhu chakakosha chekuwedzera chinoshandiswa mumaindasitiri akasiyana-siyana nekuda kwekusimba kwayo kwepamusoro, kuchengetedza mvura, uye kugona kuwedzera viscosity. Muchinyorwa chino, isu tichapinda muongororo yakazara yekukora uye thixotropy zvimiro zve cellulose ether, kunyanya takatarisana neHPMC.
Kukora chinhu chakakosha che cellulose ether, icho chinoreva kugona kwechinhu kuwedzera viscosity yemhinduro kana kupararira. HPMC inoratidzira yakakwira thickening kunyatsoita, zvichireva kuti inogona kuwedzera zvakanyanya viscosity kunyangwe pakadzika kudzika. Ichi chivakwa chinodiwa zvakanyanya mumashandisirwo mazhinji, seanonamira, machira, uye zvigadzirwa zvekuchengeta pachezvako, panodiwa viscosity yepamusoro pakuita zvirinani.
Imwe yemabhenefiti akakosha eHPMC ndeyekukwanisa kwayo kuchengetedza mvura. Kuchengetedzwa kwemvura (water retention) zvinoreva kugona kwechinhu kuchengetedza mvura mukati megadziriro, kunyangwe pasi petembiricha yakakwira kana paine zvimwe zvinonyungudutsa. HPMC inoumba gel-sechimiro kana hydrated, iyo inobatsira kuchengetedza mamorekuru emvura uye kudzivirira kunyungudika kwakanyanya. Ichi chivakwa chakanyanya kukosha mumaindasitiri senge ekuvaka uye yakaoma-musanganiswa dhaka, uko kuchengetedza hunyoro kwakakosha kune kwakakodzera hydration uye kurapa kwezvinhu.
Iyo yakawedzera viscosity inopiwa ne cellulose ether, senge HPMC, inopa mabhenefiti akati wandei mumashandisirwo akasiyana. Muindasitiri yekuvaka, HPMC inoshandiswa mukugadzira simende-yakavakirwa kuvandudza kushanda uye kudzivirira kupatsanura. Iyo yakakwira viscosity yeHPMC mhinduro inobvumira kudzora zvirinani panguva yekushandisa, kuve nechokwadi kuti yunifomu inopararira uye kudzivirira chero kugadzirisa kwezvimedu. Saizvozvo, muindasitiri yependi, HPMC inowedzerwa kumachira kuti iwedzere viscosity yavo, zvichikonzera kufukidzwa kuri nani uye kudonha kudonha.
Uyezve, iyo thixotropic chimiro che cellulose ether chinhu chakakosha kufunga. Thixotropy inoreva pfuma yechinhu kuratidza shanduko inodzoreredzwa muviscosity pakushandiswa kweshear stress. Mumashoko akareruka, kana simba rekuveura rikaiswa, zvinhu zvacho zvinova zvishoma, zvichiita kuti zvive nyore kushandisa, uye kana zvamira, zvinodzokera kune yayo yekutanga high viscosity state. Ichi chivakwa chinobatsira zvakanyanya mumashandisirwo akaita senge caulks, sealants, uye mafuta ekuzora emishonga, uko kuri nyore kuparadzira uye kuparadzira kunodiwa. HPMC's thixotropic maitiro anovimbisa kushandiswa kuri nyore uye kunyorova kwenzvimbo, uku uchichengetedza viscosity inodiwa yekunamatira uye kuvhara zvivakwa.
Kuti uongorore zvakadzika mukati mekukora uye thixotropy zvimiro zve cellulose ether, kutsvagisa kwakadzama uye kuongororwa kunoitwa. Maitiro akasiyana, kusanganisira rheological kuyerwa, anoshandiswa kuongorora viscosity, shear stress, uye thixotropic maitiro e cellulose ether mhinduro. Zvidzidzo izvi zvinobatsira mukunzwisisa hukama pakati pekuisa pfungwa, tembiricha, uye shear mwero pakukora uye thixotropy zvimiro zve cellulose ether.
Mukupedzisa, cellulose ether, kunyanya HPMC, inoratidza kusimba kwepamusoro, kuchengetedza mvura yakawanda, uye kuwedzera viscosity mumashandisirwo akasiyana-siyana. Kugona kwayo kupa thixotropic maitiro kunoita kuti ive yakakosha yekuwedzera kune zvigadzirwa uko nyore kushandisa uye yakakwirira viscosity inodiwa panguva imwe chete. Kuti uwane kunzwisisa kwakadzama kwekukora uye thixotropy zvimiro zve cellulose ether, kuongororwa kwakadzama uye kutsvagisa kunoitwa, izvo zvinowedzera kuwedzera mashandisirwo ayo eindasitiri.
Nguva yekutumira: Nov-24-2023