Isi: zoro aka na HPMC, ọcha ma ọ bụ nke na-acha ọcha na-acha ọcha ma ọ bụ ntụ ntụ. Enwere ọtụtụ ụdị cellose ma na-ejikarị ya mee ihe, mana anyị na-akpọtụrụ ndị ahịa na ntụ ntụ na-ewu ụlọ ihe onwunwe. Ihe na-ahụkarị cellulose na-ezo aka na hypromellose.
Usoro mmepụta: Ihe eji eme ihe nke HPMC: countym chloride, ihe ndị ọzọ na-emetụta flallise alkali na 35-40 ℃ maka ọkara Oge awa, pịa, pulver the cellulose, na afọ 35 ℃, nke mere na nkezi nke polymerization nke eriri alkali dị n'ime oke a chọrọ. Tinye eriri alkali n'ime otu atification ketlet, tinye propylene oxide na methyl chloride na 50-80 ° C 50-80, na-enwe nrụgide nke ihe dị ka 1.8 MPA. Mgbe ahụ, tinye ego kwesiri ekwesi na acid acid na oxalic acid ruo na mmiri ọkụ na 90 Celsius C iji saa ahụ iji gbasaa olu ahụ. Na-eme ka ọ dị omimi. Na-asa ruo na nnọpụiche, na mgbe mmiri ọdịnaya dị na ihe na-erughị 60%, kpoo ya na mmiri ikuku na-ekpo ọkụ na 130 Celsius C ruo 5%. Ọrụ: Njikọ mmiri, ahịhịa, thokoyropic mgbochi Sag, ọrụ nkwụghachi ikuku, mwube ego.
Njide mmiri: Njide mmiri bụ akụ kachasị mkpa nke cellulose eathe! Na mmepụta nke Mut 20 gypsum na ihe ndị ọzọ, ngwa e nwere ihe dị mkpa. Nnukwu akwa mmiri nwere ike imeghachi ihe ntụ ọka ciment na calcium gypsum (karịa mmeghachi omume nke ọma, ike). N'okpuru otu ọnọdụ ahụ, onye dị elu na viocosis nke sel, ka mma njigide mmiri (ọdịiche dị n'elu viscistos 100,000 dị warara); The dị elu na usoro onunu ogwu, ka mma mmiri, na-abụkarị obere mkpụrụ osisi e nwere ike ime ka ọrụ ndị agha ahụ dịkwuo mma. Ọnụego mbelata, mgbe ọdịnaya ruru otu ọkwa, omume nke mbelata mmiri na-aghọrọ nwayọọ; Ndobe mmiri nke cellulose eather na-ebelata mgbe okpomọkụ na-abawanye, mana ụfọdụ etrees elu gellulose nwekwara arụmọrụ ka mma n'okpuru ọnọdụ okpomọkụ dị elu. Njide mmiri. InterDiffiction n'etiti irighiri mmiri na eriri e nwere mkpụrụ ndụ na-eme ka ụmụ irighiri mmiri, na-enweta mmiri na-enweghị ike, mmiri a na-abata, ma na-eme ka njide mmiri ciment slurry.
Thinging, Thixatopic na Anti-Sag: na-enye ọhụụ vices dị mma na mmiri ngwa agha! Ọ nwere ike ịbawanye ndọta n'etiti mmiri mmiri na akwa akwa ahụ, ma meziwanye arụmọrụ mgbochi nke ngwa agha. Mmetụta ndị dị omimi nke etters cellususe na-abawanye ikegharị na-eguzosi ike nke ọma, na-egbochi iwepu ihe onwunwe, segregation na ọbara ọgbụgba. Mmetụta ndị dị omimi nke eyers cellulose na ihe ndị sitere na ciment na-abịa site na viscosity nke sellus. N'okpuru otu ọnọdụ ahụ, dị elu viscosity nke cellulose ether, ka mma viscosity ciment, mana ọ ga-emetụta ọgba aghara na arụmọrụ nke ihe ahụ (dị ka nnyapade trowel na bat scraper). na-adọgbu onwe ya ala). Ahịrị nke onwe ya na iche iche na-eme nke onwe gị chọrọ mmiri dị ala chọrọ obere victose ether. Ke adianade do, mmetụta nke cellose ewer ga-eme ka ihe nke ciment chọrọ ka ihe ciment chọrọ ka ịbawanye mkpụrụ nke ngwa agha. Nnukwu viscosity cellulose eart Ailulose Ether dị elu nwere nnukwu Thixtotropy, nke bụkwa isi agwa nke cellulose ether. Ngwọta osisi nke cellose n'ozuzu ha nwere ihe pseudoplastic, na-abụghị Thropyropic Flant Ngwongwo ha na-egwuri egwu okpomọkụ, mana Njirimara Flowtonian na-adị ala. Pseudoplastity na-abawanye na mmụba molecular ma ọ bụ itinye uche nke sel. A na-guzobe gels mgbe a na-ewu ewu mgbe okpomọkụ na-abawanye, na elu Thixtotropic na-aga. Etherslọ ndị na-ekwo ekwo nwere nnukwu ihe na vishotsesese dị ala na-egosipụta Thixitropy ọbụna n'okpuru okpomọkụ gel. Ngwongwo a bara uru nke ukwuu iji wuo ụlọ a na-eme ka ihe a na-ewuli ya na sag. Okwesiri iburu n'uche na viscosity nke cellulose ether, ma di elu na viocositur ibu nke cellulose ekiri, nke nwere ihe na-ezighi ezi mmetụta na ịta ahụhụ na ọrụ.
Ihe kpatara: sellulose eather nwere mmetụta pụtara ìhè na-abanye na ihe ndị sitere na ya. Clophilic otu nwere hydrophilic otu (otu hydroxy) na otu hydrophobic otu (otu methy, bụ ihe na-adịghị mma, ma si otú a nwee ọrụ na-abanye na ikuku. Mmetụta ikuku na-atụpụta nke cellulose eth cell ga-arụpụta "bọl", nke nwere ike imezi arụmọrụ nke ngwa agha a gwakọtara agwakọta, nke bara uru na-arụ ọrụ nke ngwa agha ; Ọ ga-abawanye nke ngwa agha ahụ. , na-ebelata ụgwọ ihe ọkụkụ; Mana ọ ga - eme ka ihe omimi nke ihe ndị siri ike ma belata ihe ndị metụtara ya dịka ike na modulus na - agba. Dị ka ihe na-enye ihe, ewer ether nwekwara mmetụta na-egbu egbu ma ọ bụ nke mmetụta ikuku na-abawanye na ihe ndị dabeere ciment, mana nsonaazụ ya na-eme ka ọnya ahụ belata. Mmetụta nke mmiri bụ ngwakọta nke nsonaazụ rọba na nke na-eto eto. Mgbe ọdịnaya nke cellosuse ether dị ala, ọ na-egosipụtakarị dị ka nsonaazụ na-ebelata; Mgbe ọdịnaya dị elu, mmetụta nke cellulose etitie ya na-abawanye ngwa ngwa, ọ na-enwekarị mmetụta ikuku na-aga n'ihu, yabụ arụmọrụ na-abawanye. Ihe na - eme ka ọ dịkwuo mmiri.
Isetịpụghachighachi azụ: Celligul ether nwere ike igbu oge hydration usoro ciment. Evers exousmụ na-eji ngwa agha ahụ na-eto ngwa agha na akụrụngwa dị iche iche bara ụba, ma belata mmalite nke mwepụta ọkụ na-egbu oge ma kpoo ihe hydration usoro nke ciment. Nke a bụ adịghị mma maka ngwa agha na mpaghara oyi. A na-akpata ego a site na mgbasa ozi nke cellulose evet molecules na ngwaahịa hydration dị ka Csh na CA (oh) 2. N'ihi mmụba nke viscosity nke ihe ngwọta, cellulose eart na-ebelata ngagharị nke eons na ngwọta, si otú ahụ egbu oge usoro hydration. Nke elu nke cellose eather na ihe gel, nke a na-akpọkarị mmetụta nke hydration oge. Ethzọ Evers Ọ bụghị naanị nlọghachi azụ, mana ọ na-agụlata usoro nke sistemụ ciment. Mmetụta a na-azụ ahịa nke sellulose ether dabere ọ bụghị naanị na ntinye ya na ngalaba gel, kamakwa na ihe okike kemịkal. Nke dị elu ogo nke methylation nke hemsc, ka mma nlọghachi nke cellose ether. Mmetụta Returlation siri ike. Agbanyeghị, viscosity nke mkpụrụ osisi cellulose na-enwekarị mmetụta na hydration kinetics nke ciment. Site na mmụba nke mkpụrụ ndụ na-ehulata, oge ịgba agha na-abawanye nke ukwuu. Enwere ezigbo mmekọrịta dị n'etiti oge nrụpụta mbụ nke ngwa agha na ọdịnaya nke cellulose eathe, na oge ntọzi nke na-enwe mmekọrịta dị mma na ọdịnaya nke sel. Anyị nwere ike ijikwa oge arụmọrụ nke ngwa agha ahụ site na ịgbanwe ọdịnaya nke cellose ether. Na ngwaahịa ahụ, ọ na-akụ ọrụ nke njigide mmiri, ebe na-egbu egbu, na-egbu oge ciment hydration ike, na ime ka arụmọrụ owuwu. Ikike mmiri dị mma na-eme ka cent gypsum Ash na-emeghachi omume kpamkpam, na-eme ka ọ dị mma na-eme ka ike tensit na nke ukwuu, na-eme ka arụ ọrụ dị mma ma rụọ ọrụ nke ọma ma rụọ ọrụ nke ọma. Oge na-agbanwe agbanwe. Mma ịgba ma ọ bụ mgbali nke ngwa agha, yana ike nhazi. N'ime usoro ngwa, ọ dị mkpa ikpebi ụdị, viscosity, na ọnụọgụ nke cellulose dịka ngwaahịa dị iche iche, omume owuwu na gburugburu ebe obibi.
Post Oge: Novolu 15-2022