1. Chii chinonzi hydroxypropyl methylcellulose?
——Mhinduro: Hydroxypropyl Methyl Cellulose, Shona: Hydroxypropyl Methyl Cellulose Kupfupisa: HPMC kana MHPC Alias: Hypromellose; Cellulose Hydroxypropyl Methyl Ether; Hypromellose, Cellulose, 2-hydroxypropylmethyl Cellulose ether. Cellulose hydroxypropyl methyl ether Hyprolose.
2. Chii chinonyanya kushandiswa kwehydroxypropyl methylcellulose (HPMC)?
——Mhinduro: HPMC inoshandiswa zvakanyanya mukuvaka, machira, marezeni ekugadzira, ceramics, mushonga, chikafu, machira, kurima, zvizorwa, fodya uye mamwe maindasitiri. HPMC inogona kukamurwa kuita giredhi rekuvaka, giredhi rekudya uye giredhi remishonga zvinoenderana nechinangwa. Parizvino, zvizhinji zvezvigadzirwa zvepamba ndezvekuvaka giredhi. Mugiredhi rekuvaka, putty poda inoshandiswa muhombe, inenge 90% inoshandiswa kune putty poda, uye imwe yasara inoshandiswa simende dhaka uye glue.
3. Kune marudzi akawanda ehydroxypropyl methylcellulose (HPMC), uye ndezvipi zvakasiyana mukushandiswa kwawo?
——Mhinduro: HPMC inogona kukamurwa kuita yekukurumidza mhando uye inopisa-kuparara mhando. Instant mhando zvigadzirwa zvinopararira nekukurumidza mumvura inotonhora uye inonyangarika mumvura. Panguva ino, mvura haina viscosity nekuti HPMC inongoparadzirwa mumvura pasina kuparara chaiko. Inenge maminetsi maviri, viscosity yemvura inowedzera zvishoma nezvishoma, ichigadzira yakajeka viscous colloid. Zvigadzirwa zvinopisa zvinonyunguduka, kana zvasangana nemvura inotonhora, zvinogona kupararira nekukurumidza mumvura inopisa uye zvinonyangarika mumvura inopisa. Kana tembiricha yadzikira kune imwe tembiricha, viscosity inozoonekwa zvishoma nezvishoma kusvika yaita yakajeka viscous colloid. Iyo inopisa-yakanyunguduka mhando inogona kungoshandiswa muputty poda uye dhaka. Mumvura glue uye pendi, pachave nemapoka chiitiko uye hachigone kushandiswa. Rudzi rwepakarepo rune huwandu hwakakura hwemaapplication. Inogona kushandiswa mu putty poda uye dhaka, pamwe chete nemvura glue uye pendi, pasina contraindications.
4. Nzira yekusarudza yakakodzera hydroxypropyl methylcellulose (HPMC) nekuda kwezvinangwa zvakasiyana?
——Mhinduro :: Kushandiswa kweputty powder: Zvinodiwa zvakaderera, uye viscosity ndeye 100,000, iyo yakakwana. Chinhu chakakosha kuchengetedza mvura zvakanaka. Kushandiswa kwedhaka: zvinodiwa zvepamusoro, high viscosity, 150,000 zviri nani. Kushandiswa kweglue: zvigadzirwa zvekukurumidza zvine viscosity yakakwirira zvinodiwa.
5. Chii chinofanira kutariswa mukushandiswa chaiko kwehukama pakati pe viscosity uye tembiricha yeHPMC?
——Mhinduro: The viscosity of HPMC iri inversely proportional kune tembiricha, kureva kuti, viscosity inowedzera sezvo tembiricha inoderera. Iyo viscosity yechigadzirwa chatinowanzo taura nezvayo inoreva bvunzo mhedzisiro yayo 2% aqueous solution patembiricha ye20 degrees Celsius.
Mumashandisirwo anoshanda, zvinofanirwa kucherechedzwa kuti munzvimbo dzine tembiricha yakakura misiyano pakati pezhizha nechando, zvinokurudzirwa kushandisa yakaderera viscosity munguva yechando, iyo inobatsira pakuvaka. Kana zvisina kudaro, kana kutonhora kwakaderera, viscosity ye cellulose inowedzera, uye kunzwa kwemaoko kuchave kunorema pakukwesha.
Medium viscosity: 75000-100000 inonyanya kushandiswa kune putty
Chikonzero: kuchengetedza mvura zvakanaka
High viscosity: 150000-200000 Inonyanya kushandiswa polystyrene particle thermal insulation mortar rubber powder uye vitrified microbead thermal insulation mortar.
Chikonzero: Iyo viscosity yakakwira, dhaka haisi nyore kudonha, sag, uye kuvakwa kunovandudzwa.
6. HPMC isiri-ionic cellulose ether, saka chii chisiri-ionic?
——Mhinduro: Mukutaura kwevasina-ioni zvinhu zvisingaite ioni mumvura. Ionization inoreva nzira iyo electrolyte inopatsanurwa kuita ayoni anochaji anogona kufamba akasununguka mune chaiyo solvent (semvura, doro). Semuenzaniso, sodium chloride (NaCl), munyu watinodya zuva rega rega, unonyunguduka mumvura uye ionizes kugadzira zvakasununguka sodium ion ions (Na+) iyo inochajiswa zvakanaka uye chloride ions (Cl) ine mhosva yakaipa. Kureva kuti, kana HPMC yaiswa mumvura, haizoparadzanise mumaoni anochajwa, asi aripo muchimiro chemamorekuru.
Nguva yekutumira: Kubvumbi-26-2023