1. Gịnị bụ isi ojiji nke cellulose?
HPMCa na-ejikarị eme ihe na ihe owuwu, mkpuchi, resins sịntetik, ceramik, ọgwụ, nri, textiles, ugbo, ihe ịchọ mma, ụtaba na ụlọ ọrụ ndị ọzọ. Enwere ike kewaa HPMC na ọkwa ụlọ ọrụ mmepụta ihe, ọkwa nri na ọkwa ọgwụ dịka ngwa ahụ siri dị.
2. E nwere ụdị cellulose dị iche iche, oleekwa ihe dị iche na ojiji ha?
Enwere ike ikewa HPMC ka ọ bụrụ ụdị ngwa ngwa (aha suffix “S”) na ụdị agbaze ọkụ. Ngwa ngwa ụdị ngwaahịa na-agbasa ngwa ngwa na mmiri oyi wee pụọ n'ime mmiri. N'oge a, mmiri mmiri enweghị viscosity n'ihi na HPMC na-agbasasị naanị na mmiri na-enweghị ezigbo mgbasa. Ihe dị ka (na-akpali akpali) maka nkeji 2, viscosity nke mmiri mmiri ji nwayọọ nwayọọ na-abawanye, na-eme ka colloid na-acha ọcha na-acha ọcha. Ngwaahịa na-ekpo ọkụ na-ekpo ọkụ, mgbe ị na-ezute mmiri oyi, nwere ike ịgbasa ngwa ngwa na mmiri ọkụ ma pụọ na mmiri ọkụ. Mgbe okpomọkụ na-adaba na ọnọdụ okpomọkụ (dị ka gel okpomọkụ nke ngwaahịa), viscosity ga-eji nwayọọ nwayọọ na-apụta ruo mgbe ọ na-etolite transperent viscous colloid.
3. Kedu ụzọ esi agbaze cellulose?
1). Enwere ike ịgbakwunye ụdị niile na ihe onwunwe site na ngwakọta akọrọ;
2). Mgbe ọ dị mkpa ka etinye ya ozugbo na ngwọta mmiri mmiri nkịtị, ọ ka mma iji ụdị mgbasa ozi mmiri oyi. Ọ na-ewekarị nkeji 1-30 ka ọ gbakwụnyere mgbe ọ gbakwụnyere (kpalie ma kpalie)
3). Ụdị ndị nkịtị na-ebu ụzọ kpalie ma gbasaa na mmiri ọkụ, wee gbazee na mmiri oyi mgbe ọ kpalitere ma mee ka ọ dị jụụ;
4). Ọ bụrụ na agglomeration emee n'oge mgbasa, ọ bụ n'ihi na-akpali akpali ezughị ma ọ bụ ndị nkịtị nlereanya na-agbakwunyere ozugbo na mmiri oyi. N'oge a, a ga-akpali ya ngwa ngwa. nke
5). Ọ bụrụ na a na-emepụta egosipụta n'oge mgbasa, enwere ike ịhapụ ha ka ha guzoro maka awa 2-12 (a na-ekpebi oge a kapịrị ọnụ site na nkwụsi ike nke ngwọta) ma ọ bụ wepụ ya site na ikpochapu, pressurizing, wdg, na ego kwesịrị ekwesị nke defoaming agent nwekwara ike ịgbakwunye. nke
4. Olee otú ikpe àgwà nke cellulose mfe na kensinammuo?
1) Ọcha, ọ bụ ezie na ọcha enweghị ike ikpebi ma HPMC dị mfe iji, ma ọ bụrụ na agbakwunyere ihe ndị na-acha ọcha na usoro mmepụta, ọ ga-emetụta àgwà ya, ma ọtụtụ n'ime ngwaahịa ndị dị mma nwere ezigbo ọcha.
2) Ịdị mma: ịdị mma nkeHPMCN'ozuzu nwere ntupu 80 na 100 ntupu, 120 ntupu dị obere, nke kacha mma ka mma.
3) Nfefe ọkụ: Mgbe etinyere HPMC na mmiri ka ọ bụrụ colloid transperent, lelee nnyefe ọkụ ya. Ka ọkụ na-ebufe ọkụ dị ukwuu, ọ ka mma, na-egosi na ọ dị obere insoluble na ya, na nnyefe nke reactors vetikal na-adịkarị mma. , The kehoraizin reactor dị njọ, ma ọ pụtaghị na àgwà nke vetikal reactor dị mma karịa nke kwụ ọtọ reactor, na e nwere ọtụtụ ihe na-ekpebi ngwaahịa àgwà.
4) Specific gravity: Ka nnukwu ike ndọda dị, ka arọ ahụ ka mma. Ka nnukwu ike ndọda dị elu, ka ọdịnaya hydroxypropyl dị na ngwaahịa ahụ dị elu. Ka ọdịnaya hydroxypropyl dị elu, ka mma na-ejigide mmiri.
5. Gịnị bụ ego nke cellulose na putty ntụ ntụ?
Ọnụ ọgụgụ nke HPMC eji eme ngwa bara uru na-emetụta ihu igwe, okpomọkụ, àgwà calcium ash mpaghara, usoro nke putty powder na àgwà ndị ahịa chọrọ. E nwere ọdịiche dị n'ebe dị iche iche, n'ozuzu na-ekwu okwu, ọ bụ n'etiti 4-5 n'arọ.
6. Kedu ihe bụ viscosity kwesịrị ekwesị nke cellulose?
N'ozuzu, 100,000 putty ntụ ntụ zuru ezu, na ihe achọrọ na ngwa agha dị elu, ọ dịkwa mkpa 150,000 ka ọ dị mfe iji. Ọzọkwa, ọrụ kachasị mkpa nke HPMC bụ njide mmiri, na-esote thickening. Na ntụ ntụ putty, ọ bụrụhaala na njide mmiri dị mma na viscosity dị ala (7-8), ọ ga-ekwe omume. N'ezie, ka viscosity dị elu, ka mma na-ejigide mmiri. Mgbe viscosity karịrị 100,000, viscosity enweghị mmetụta na njide mmiri. nnukwu.
7. Gịnị bụ isi oru egosi nke cellulose?
Hydroxypropyl ọdịnaya
Methyl ọdịnaya
viscosity
Ash
Ọnwụ na ihicha
8. Kedu ihe bụ isi akụrụngwa nke cellulose?
Ihe bụ isi akụrụngwa nke HPMC: owu a nụchara anụcha, methyl chloride, propylene oxide, mmiri mmiri caustic soda, wdg.
9. Gịnị bụ isi ọrụ nke ngwa nke cellulose na putty ntụ ntụ? Enwere mmeghachi omume kemịkal ọ bụla?
N'ime ntụ ntụ putty, ọ na-arụ ọrụ atọ nke ịgbara mmiri, njigide mmiri na ihe owuwu. N'ịgba ụbara, cellulose nwere ike itolite ka ọ kwụsịtụ, mee ka ngwọta ya bụrụ otu elu na ala, ma guzogide ịda mbà n'obi. Njide mmiri: mee ka ntụ ntụ putty kpoo nwayọọ nwayọọ, ma nyere calcium ash aka imeghachi omume n'okpuru ọrụ mmiri. Mwube: Cellulose nwere mmetụta mmanu mmanu, nke nwere ike ime ka uzuzu putty nwee ezigbo ihe owuwu. HPMC anaghị eso na mmeghachi omume kemịkalụ ọ bụla, mana ọ na-arụ naanị ọrụ inyeaka.
10. Cellulose bụ ihe na-abụghị ionic cellulose ether, ya mere gịnị bụ na-abụghị ionic?
N'okwu ndị nkịtị, bekee adịghị etinye aka na mmeghachi omume kemịkal.
CMC (carboxymethyl cellulose) bụ cellulose cationic, n'ihi ya, ọ ga-aghọ ọka bean mgbe ọ zutere calcium ash.
11 Kedu ihe jikọrọ jel okpomọkụ nke cellulose?
The jel okpomọkụ nke HPMC metụtara methoxy ọdịnaya, ala methoxy ọdịnaya, elu jel okpomọkụ.
12. Enwere mmekọrịta ọ bụla n'etiti nkwụsị ntụ ntụ nke putty ntụ ntụ na cellulose?
Enwere mmekọrịta! ! ! Nke ahụ bụ, njigide mmiri na-adịghị mma nke HPMC ga-eme ka ntụ ntụ (ọdịnaya nke ihe ndị dị ka ash, nnukwu calcium, na ciment, okpomọkụ ụlọ, na ọnọdụ mgbidi ga-emetụta).
13. Kedu ihe dị iche n'etiti mmiri oyi ozugbo na cellulose soluble na-ekpo ọkụ na usoro mmepụta?
A na-eji glioxal agwọ ụdị mmiri oyi nke HPMC n'elu, ọ na-agbasa ngwa ngwa na mmiri oyi, mana ọ naghị agbaze n'ezie. Ọ na-agbaze naanị mgbe viscosity na-abawanye. A naghị eji glycoxal agwọ ụdị agbaze na-ekpo ọkụ n'elu. Ọ bụrụ na ọnụ ọgụgụ glycoxal buru ibu, nkesa ahụ ga-adị ngwa ngwa, ma viscosity ga-abawanye nwayọọ nwayọọ, ma ọ bụrụ na ọnụ ọgụgụ ahụ dị ntakịrị, ihe na-abụghị eziokwu.
14. Gịnị mere cellulose ji enwe isi?
HPMC mepụtara site na usoro mgbaze na-eji toluene na isopropanol dị ka ihe mgbaze. Ọ bụrụ na ịsa ahụ adịghị mma nke ukwuu, a ga-enwe isi ihe fọdụrụnụ. (Nweghachi nke ịnọpụ iche bụ usoro isi nke isi)
15. Kedu ka esi ahọrọ cellulose kwesịrị ekwesị maka ebumnuche dị iche iche?
Putty ntụ ntụ: chọrọ njigide mmiri dị elu, ịdị mfe ihe owuwu
Ngwa ngwa sitere na ciment nkịtị: chọrọ njigide mmiri dị elu, nguzogide okpomọkụ dị elu, na viscosity ozugbo
Ngwa nke gluu ihe owuwu: ngwaahịa ngwa ngwa nwere nnukwu viscosity. (ọkwa akwadoro
Ngwa ngwa gypsum: njigide mmiri dị elu, ọkara na viscosity dị ala, mmụba ngwa ngwa
16. Gịnị bụ aha ọzọ maka cellulose?
A na-akpọ ya HPMC ma ọ bụ MHPC alias hypromellose, cellulose hydroxypropyl methyl ether.
17. Ngwa nke cellulose na ntụ ntụ ntụ, gịnị bụ ihe kpatara egosipụta na ntụ ntụ ntụ?
N'ime ntụ ntụ putty, HPMC na-arụ ọrụ atọ nke ịgbara mmiri, njigide mmiri na ihe owuwu. Ihe kpatara afụ ahụ bụ:
1. A na-agbakwunye oke mmiri.
2. Ala oyi akwa adịghị akọrọ, naanị kpochapụ oyi akwa ọzọ n'elu, ọ dịkwa mfe ịfụfụ.
18. Kedu ihe dị iche n'etiti cellulose na MC:
MC bụ methyl cellulose, nke a na-eme nke cellulose ether site n'ịgwọ owu a nụchara anụcha na alkali, na-eji methane chloride dị ka onye na-eme ka etherification na-emeghachi omume. N'ozuzu, ogo nke nnọchi bụ 1.6-2.0, na solubility dịgasị iche iche na ọkwa dị iche iche nke nnọchi. Dị iche iche, ọ bụ nke na-abụghị ionic cellulose ether.
(1) Njide mmiri nke methylcellulose na-adabere na ego mgbakwunye ya, viscosity, urughuru mma na mgbasa ozi. N'ozuzu, ọ bụrụ na ego mgbakwunye buru ibu, ịdị mma dị ntakịrị, na viscosity dị ukwuu, ọnụ ọgụgụ njide mmiri dị elu. N'ime ha, ego mgbakwunye nwere mmetụta dị ukwuu na njide mmiri mmadụ. Viscosity adịghị nhata na ọnụego njide mmiri. Ọnụego mgbasa ozi na-adabere na elu nke mkpụrụ ndụ cellulose. Ogo nke mgbanwe na urughuru fineness. N'ime ọtụtụ cellulose ethers dị n'elu, ọnụ ọgụgụ njide mmiri nke methyl cellulose na Jinshuiqiao cellulose dị elu.
(2) Methylcellulose na-agbaze na mmiri oyi, ọ ga-esikwa ike igbari na mmiri ọkụ. Ngwọta mmiri ya kwụsiri ike na oke ph=3-12. Ọ nwere ezigbo ndakọrịta na starch, wdg na ọtụtụ surfactants. Mgbe okpomọkụ ahụ Mgbe a na-enweta okpomọkụ gelation, gelation ga-eme.
(3) Mgbanwe na okpomọkụ ga-emetụta oke njide mmiri nke methyl cellulose. N'ozuzu, ka okpomọkụ dị elu, na-akawanye njọ nke njide mmiri. Ọ bụrụ na okpomọkụ nke ngwa agha gafere ogo 40, a ga-ebelata mmiri nke methyl cellulose, nke ga-emetụta n'ụzọ dị ukwuu n'iwu nke ngwa agha ahụ.
(4)Methyl cellulosenwere mmetụta dị ịrịba ama na iwu na adhesion nke ngwa agha. Adhesion ebe a na-ezo aka na nrapado ike mmetụta dị n'etiti ngwa ngwa onye ọrụ na mgbidi, ya bụ, shiee nguzogide nke ngwa agha. Nchikota dị elu, nkwụsị nke mgbochi nke ngwa agha dị ukwuu, na ike nke ndị ọrụ na-arụ ọrụ na-arụ ọrụ na-arụkwa ọrụ buru ibu, na ịrụ ọrụ nke ngwa agha adịghị mma.
Oge nzipu: Eprel-25-2024