Ni ubuhe bwoko bwa carboxymethyl selulose?

Ni ubuhe bwoko bwa carboxymethyl selulose?

Igisubizo:Carboxymethyl selulosenayo ifite imitungo itandukanye kubera impamyabumenyi zayo zitandukanye zo gusimburwa. Urwego rwo gusimbuza, ruzwi kandi nk'urwego rwa etherification, bivuze ko impuzandengo ya H mu matsinda atatu ya hydroxyl ya OH yasimbuwe na CH2COONa. Iyo amatsinda atatu ya hydroxyl kumpeta ya selile afite 0.4 H mumatsinda ya hydroxyl asimburwa na carboxymethyl, irashobora gushonga mumazi. Muri iki gihe, byitwa 0.4 impamyabumenyi yo gusimbuza cyangwa icyiciro cyo gusimbuza (impamyabumenyi 0.4-1.2).

Ibyiza bya carboxymethyl selulose:

. Ifite imbaraga zo gutatanya no guhuza imbaraga.

(2) Igisubizo cyacyo cyamazi kirashobora gukoreshwa nka emulisiferi yubwoko bwamavuta / amazi nubwoko bwamazi / amavuta. Ifite kandi imbaraga zo gusohora amavuta n'ibishashara, kandi ni emulifier ikomeye.

. Ariko, usibye acetate ya gurşide, irashobora kongera gushonga mumuti wa sodium hydroxide, kandi imvura nka barium, fer na aluminiyumu irashobora gushonga byoroshye mumuti wa 1% hydroxide ya amonium.

(4) Iyo igisubizo gihuye na acide organic na acide organic organique, imvura irashobora kubaho. Ukurikije indorerezi, iyo agaciro ka pH ari 2.5, imvura n’imvura byatangiye. Kubwibyo pH 2.5 irashobora gufatwa nkikintu gikomeye.

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(6) Ubushyuhe bugira uruhare runini mubwiza bwumuti wabwo wamazi. Ubukonje bugabanuka uko ubushyuhe bumaze kuzamuka, naho ubundi. Ihungabana ryubwiza bwumuti wamazi mubushyuhe bwicyumba ntigihinduka, ariko ubukonje burashobora kugabanuka buhoro buhoro iyo bishyushye hejuru ya 80 ° C mugihe kirekire. Mubisanzwe, iyo ubushyuhe butarenze 110 ° C, nubwo ubushyuhe bwakomeza kumara amasaha 3, hanyuma bukonje kugeza kuri 25 ° C, ubwiza buracyasubira muburyo bwambere; ariko iyo ubushyuhe bushyushye kugeza kuri 120 ° C mumasaha 2, nubwo ubushyuhe bwagaruwe, ubukonje bugabanukaho 18.9%. .

(7) Agaciro pH nako kazagira ingaruka runaka kubwiza bwumuti wacyo wamazi. Mubisanzwe, iyo pH yumuti muto-wibisubizo bitandukanije nubutabogamye, ububobere bwayo ntacyo bugira, mugihe kubisubizo biciriritse-byijimye, niba pH itandukiriye kutagira aho ibogamiye, ubwiza butangira kugabanuka buhoro buhoro; niba pH yumuti-mwinshi cyane utandukanijwe no kutabogama, ububobere bwayo buzagabanuka. Kugabanuka gukabije.

. Kurugero, irahujwe na kole yinyamanswa, gum arabic, glycerine hamwe na krahisi ya elegitoronike. Ihujwe kandi nikirahure cyamazi, inzoga za polyvinyl, urea-formaldehyde resin, melamine-formaldehyde resin, nibindi, ariko kurwego rwo hasi.

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(10) Hariho ibintu bitatu byijimye byo guhitamo ukurikije porogaramu. Kuri gypsumu, koresha viscosity yo hagati (2% yumuti wamazi kuri 300-600mPa · s), niba uhisemo ububobere buke (igisubizo 1% kuri 2000mPa · s cyangwa irenga), urashobora kuyikoresha muri dosiye igomba kugabanuka neza.

(11) Igisubizo cyamazi cyacyo gikora nka gypsum.

. Nyuma yo kwanduza, ibishishwa bizagabanuka kandi byoroshye bizagaragara. Ongeramo urugero rukwiye rwo kubungabunga ibintu mbere birashobora gukomeza ubwiza bwayo no kwirinda indwara igihe kirekire. Ibishobora kuboneka ni: BIT (1.2-benzisothiazolin-3-imwe), racebendazim, thiram, chlorothalonil, nibindi. Amafaranga yongeweho mubisubizo byamazi ni 0.05% kugeza 0.1%.

Ni ubuhe buryo hydroxypropyl methylcellulose ikora nk'amazi agumana amazi ya anhydrite?

Igisubizo: Hydroxypropyl methylcellulose nigikoresho cyiza cyane cyo kubika amazi kubikoresho bya sima ya gypsumu. Hamwe no kwiyongera kwibintu bya hydroxypropyl methylcellulose. Kugumana amazi yibikoresho bya sima byiyongera vuba. Iyo nta muti wo kubika amazi wongeyeho, igipimo cyo gufata amazi ya gypsumu ciment ciment ni hafi 68%. Iyo ingano yo kubika amazi ari 0.15%, igipimo cyo gufata amazi ya gypsumu ciment ciment gishobora kugera kuri 90.5%. Kandi ibisabwa byo gufata amazi ya plaster yo hepfo. Igipimo cyibikoresho bigumana amazi kirenga 0.2%, byongera urugero, kandi igipimo cyo gufata amazi cyibikoresho bya sima ya gypsumu cyiyongera buhoro. Gutegura ibikoresho byo guhomesha anhydrite. Igipimo gikwiye cya hydroxypropyl methylcellulose ni 0.1% -0.15%.

Ni izihe ngaruka zitandukanye za selile zitandukanye kuri plaster ya paris?

Igisubizo: Byombi carboxymethyl selulose na methyl selulose birashobora gukoreshwa nkibikoresho bigumana amazi kuri plaster ya paris, ariko ingaruka zo kugumana amazi ya carboxymethyl selulose iri munsi cyane ugereranije na methyl selulose, kandi carboxymethyl selulose irimo umunyu wa sodium, bityo rero birakwiriye ko Plaster ya Paris igira ingaruka mbi kandi ikagabanya imbaraga za plaster.Methyl selileni byiza kuvanga ibikoresho bya sima ya gypsumu ihuza kubika amazi, kubyimba, gukomera, no kwifata, usibye ko amoko amwe agira ingaruka mbi mugihe dosiye ari nini. hejuru ya carboxymethyl selulose. Kubera iyo mpamvu, ibikoresho byinshi bya gypsum bigize gelling bifata uburyo bwo guhuza carboxymethyl selulose na methyl selulose, bitagaragaza gusa imiterere yabyo (nkingaruka zo kudindiza carboxymethyl selulose, ingaruka zishimangira methyl selulose), kandi bigakoresha inyungu zabo rusange (nko kubika amazi ningaruka zibyibushye). Muri ubu buryo, imikorere yo gufata amazi yibikoresho bya sima ya gypsumu hamwe n’imikorere yuzuye yibikoresho bya sima ya gypsumu irashobora kunozwa, mugihe iyongerwa ryibiciro riguma kumurongo wo hasi.