Ibikoresho by'ingenzi byo gusigwa plasta byoroshye muri gypsum—cellulose ether

1. Ibikoresho fatizo bya eteri ya selulose

Eteri ya selulosi yo kubaka ni polymeri idashonga mu mazi idafite ionic, isoko yayo ikaba ari:

Selulose (umunyu w'ibiti cyangwa ipamba), hydrocarboni za halogenated (methane chloride, ethyl chloride cyangwa izindi halide z'iminyururu miremire), epoxy compounds (ethylene oxide, propylene oxide, nibindi)

HPMC-Hydroxypropyl Methyl Cellulose Ether

Eteri ya HEC-Hydroxyethyl Cellulose

Eteri ya HEMC-Hydroxyethyl Methyl Cellulose

EHEC-Ethyl Hydroxyethyl Cellulose Ether

eteri ya MC-methyl cellulose

2. Imiterere ya eteri ya selulose

Imiterere ya ether za selulose iterwa na:

Igipimo cya polymerization DP Umubare w'ibice bya glucose—ubukana

Ibisimbura n'urwego rwabyo rwo gusimbuza, urugero rw'uburyo bihurirana —- bigena aho bishyirwa mu bikorwa

Ingano y'uduce duto—-Gushonga

Gutunganya ubuso (ni ukuvuga gutinda gusenyuka)—igihe cy'ubukana gifitanye isano n'agaciro ka pH k'urusobe rw'amazi

Ingano yo guhindura—-Kongera ubushobozi bwo kudakora neza no gukora neza kwa eteri ya selulose.

3. Uruhare rwa eteri ya selulosi - kubika amazi

Cellulose ether ni uruhererekane rwa polymer rugizwe n'ibice bya β-D-glucose. Itsinda rya hydroxyl riri muri molekile na atome ya ogisijeni iri ku ruhurirane rwa eteri bikora umugozi wa hydrogen hamwe na molekile y'amazi, ufata molekile y'amazi iri ku buso bw'uruhererekane rwa polymer hanyuma ugafata molekile. Muri uwo mugozi, udindiza imyuka y'amazi kandi ushyirwa mu gice cy'ibanze.

Ibyiza bitangwa n'imiterere yo kubika amazi ya eteri za selulose:

Nta mpamvu yo kuvomesha urwego rw'ibanze, inzira yo kuzigama

inyubako nziza

imbaraga zihagije

4. Uruhare rwa eteri ya selulosi - ingaruka zo gukuba

Eteri ya selulosi ishobora kongera ubufatanye hagati y’ibice bya sima ishingiye kuri gypsum, ibi bikaba bigaragarira mu kwiyongera k’ubudasa bw’isima.

Ibyiza by'ingenzi bitangwa no kwiyongera kwa ether za selulose ni ibi bikurikira:

Gabanya ivu ry'ubutaka

Ongera uburyo bwo gufatana ku ishingiro

Gabanya ukugwa kw'imyobo

komeza kontineri ingana

5. Uruhare rwa eteri ya selulosi - imikorere y'ubuso

Cellulose ether igizwe n'amatsinda akunda amazi (amatsinda ya hydroxyl, imigozi ya ether) n'amatsinda akunda amazi (amatsinda ya methyl, amatsinda ya ethyl, impeta za glucose) kandi ni surfactant.

(Ubuso bw'amazi ni 72mN/m, surfactant ni 30mN/m, naho eteri ya cellulose ni HPC 42, HPMC 50, MC 56, HEC 69, CMC 71mN/m)

Ibyiza by'ingenzi bitangwa n'imikorere y'ubuso bwa ether za selulose ni ibi bikurikira:

Ingaruka zo guhumeka umwuka (gukurura neza, ubucucike buke bw'amazi, modulus nke yoroshye, kudakomera no gushonga)

Gutosesha (byongera gufatana ku gice cy'ubutaka)

6. Ibisabwa kugira ngo gypsum yoroshye ikoreshwe muri eteri ya cellulose

(1). Amazi agumana neza

(2). Ikorana neza, nta gufunga

(3). Gusya neza mu buryo burambuye

(4). Irwanya cyane kugwa

(5). Ubushyuhe bwa jeli buri hejuru ya 75°C

(6). Igipimo cyihuse cyo gusenyuka

(7). Ni byiza kugira ubushobozi bwo guhumeka umwuka no gushimangira utubumbe tw'umwuka muri mortilage

11. Uburyo bwo kumenya igipimo cya eteri ya selulose

Ku bijyanye no gusigwa plasta, ni ngombwa kubika amazi ahagije muri mortiwo mu gihe kirekire kugira ngo ikore neza kandi wirinde kwangirika k'ubuso. Muri icyo gihe, cellulose ether igumana amazi akwiye igihe kirekire kugira ngo mortiwo igire inzira ihamye yo gufunga.

Ingano ya eteri ya selulosi iterwa na:

Ubukana bwa eteri ya selulose

Uburyo bwo gukora eteri ya selulose

Ibikubiye mu bicuruzwa n'ikwirakwizwa rya Cellulose Ether

Ingano y'uduce twa eteri ya selulosi

Ubwoko n'imiterere ya sima ishingiye kuri gypsum

Ubushobozi bwo kwinjiza amazi bw'urwego rw'ibanze

Ikoreshwa ry'amazi mu gukwirakwiza imyumbati ishingiye kuri gypsum mu buryo busanzwe

Igihe cyo gushyiraho sima ishingiye kuri gypsum

Ubugari bw'inyubako n'imikorere y'inyubako

Imiterere y'inyubako (nk'ubushyuhe, umuvuduko w'umuyaga, n'ibindi)

Uburyo bwo kubaka (gusya n'intoki, gutera imashini)