Iko kushandiswa kukuru kwehydroxypropyl methylcellulose

1. Chii chinonyanya kushandiswa chehydroxypropyl methylcellulose (HPMC)?

HPMC inoshandiswa zvakanyanya mukuvaka, machira, ekugadzira resin, 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.

2. Kune marudzi akawanda ehydroxypropyl methylcellulose (HPMC), uye ndezvipi zvakasiyana mukushandiswa kwawo?

HPMC inogona kukamurwa kuva pakarepo mhando uye inopisa-kuparara mhando. Iko pakarepo rudzi chigadzirwa chinopararira nokukurumidza 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 kunyangarika 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.

3. Ndedzipi nzira dzekuparara kwehydroxypropyl methylcellulose (HPMC)?

Mvura inopisa yekunyungudika nzira: Sezvo HPMC isinganyungudika mumvura inopisa, HPMC inogona kuparadzirwa zvakaenzana mumvura inopisa padanho rekutanga, uye yobva yanyungudika nekukurumidza kana yatonhodzwa. Nzira mbiri dzakajairika dzinotsanangurwa sezvizvi:

1) Isa huwandu hunodiwa hwemvura inopisa mumudziyo uye kupisa kusvika ku70 ° C. Iyo hydroxypropyl methylcellulose yakawedzerwa zvishoma nezvishoma pasi pekusimudzira zvishoma nezvishoma, pakutanga HPMC yakayangarara pamusoro pemvura, uye zvishoma nezvishoma yakagadzira slurry, iyo yakanyoroveswa pasi pekukurudzira.

2), wedzera 1/3 kana 2/3 yehuwandu hunodiwa hwemvura mumudziyo, uye kupisa kusvika 70 ° C, paradzira HPMC maererano nenzira ye1), uye gadzirira slurry yemvura inopisa; wobva wawedzera huwandu hwakasara hwemvura inotonhora kumvura inopisa slurry, musanganiswa wacho wakatonhodzwa mushure mekukurudzira.

Powder kusanganisa nzira: sanganisa HPMC hupfu nehuwandu hukuru hwezvimwe zvinhu zvehupfu, nyatso sanganisa nemusanganisi, wobva wawedzera mvura kunyungudika, ipapo HPMC inogona kunyungudutswa panguva ino pasina kusanganiswa, nekuti pane chete HPMC diki mune zvese zvidiki. kona Powder, ichanyungudika pakarepo kana yasangana nemvura. —— Vagadziri vehupfu nedhaka vari kushandisa nzira iyi. [Hydroxypropyl methylcellulose (HPMC) inoshandiswa sechinhu chakakora uye chekuchengetedza mvura mu putty powder mortar. ]

4. Nzira yekutonga sei kunaka kwehydroxypropyl methylcellulose (HPMC) nyore uye intuitively?

(1) Kuchena: Kunyangwe kuchena kusingakwanise kuona kana HPMC iri nyore kushandisa, uye kana majenti ekuchena akawedzerwa panguva yekugadzira, zvinokanganisa kunaka kwayo. Zvisinei, zvizhinji zvezvigadzirwa zvakanaka zvine kuchena kwakanaka.

(2) Fineness: Kunaka kweHPMC kunowanzo kuve ne80 mesh uye zana mesh, uye 120 mesh ishoma. Yakawanda HPMC inogadzirwa muHebei ndeye 80 mesh. Kunyanya kunaka, kazhinji kutaura, zviri nani.

(3) Light transmittance: isa hydroxypropyl methylcellulose (HPMC) mumvura kuti iite transparent colloid, uye tarisa kupenya kwayo. Iyo yakakura iyo mwenje transmittance, zviri nani, zvichiratidza kuti kune mashoma insolubles mairi. . Kupinda kwemareactors akatwasuka kazhinji kwakanaka, uye kuya kwemareactors akachinjika kwakaipisisa, asi hazvireve kuti kunaka kwemaactors akatwasuka kuri nani pane emareactor akachinjika, uye kunaka kwechigadzirwa kunotarwa nezvinhu zvakawanda.

(4) Simba rinokwevera zvinhu pasi: Kukura kwegiravhiti chaiyo, kurema ndiko kuri nani. Iyo chaiyo yakakura, kazhinji nekuti zvirimo muboka re hydroxypropyl mariri zvakakwirira, uye zviri muboka re hydroxypropyl zvakakwirira, kuchengetwa kwemvura kuri nani.