Okwu Mmalite nke Hydroxyethyl Cellulose

Njirimara anụ ahụ na kemịkalụ nke Hydroxyethyl Cellulose
Njirimara ọdịdị Ngwaahịa a bụ ọcha ruo odo odo dị nro, fibrous ma ọ bụ ntụ ntụ siri ike, anaghị egbu egbu ma enweghị ụtọ
Ebe ịgbaze 288-290 °C (Dec.)
Njupụta 0.75 g/mL na 25 °C (ọkụ)
Mmiri Na-agbaze n'ime mmiri. A naghị agbaze n'ime ihe ndị na-agbaze n'ime mmiri nkịtị. Ọ na-agbaze n'ime mmiri oyi na mmiri ọkụ, ọ naghịkwa agbaze n'ọtụtụ ihe ndị na-agbaze n'ime mmiri. Mmiri na-agbaze ntakịrị n'ime oke PH 2-12, mana mmiri na-agbaze karịa oke a. O nwere ọrụ nke ịka njọ, ịkwụsịtụ, ijikọ, ime ka mmiri dị ọcha, ịgbasa, na idobe mmiri mmiri. Enwere ike ịkwadebe ngwọta dị na oke mmiri dị iche iche. Nwere ezigbo mmiri nnu maka electrolytes.

Dịka ihe na-adịghị eme ka ihe dị n'ime mmiri na-abụghị ionic, hydroxyethyl cellulose nwere ihe ndị a na mgbakwunye na ịka nká, nkwụsịtụ, ijikọ, na-ese n'elu mmiri, na-emepụta ihe nkiri, na-agbasa, na-echekwa mmiri na inye colloids nchebe:
1. A na-agbaze HEC na mmiri ọkụ ma ọ bụ mmiri oyi, okpomọkụ dị elu ma ọ bụ esi mmiri na-enweghị mmiri ozuzo, nke mere na o nwere ọtụtụ njirimara ịgbaze na viscosity, yana gelation na-abụghị okpomọkụ;
2. Ọ bụghị ionic ma nwee ike ibikọ na ọtụtụ polymers ndị ọzọ na-agbaze mmiri, surfactants, na nnu. Ọ bụ ezigbo ihe na-eme ka ọ sie ike maka ngwọta electrolyte dị elu;
3. Ike nchekwa mmiri dị okpukpu abụọ karịa nke methyl cellulose, ọ na-achịkwakwa mmiri nke ọma.
4. Ma e jiri ya tụnyere methyl cellulose na hydroxypropyl methyl cellulose a ma ama, ikike ịgbasa nke HEC bụ nke kacha njọ, mana ikike nchekwa colloid bụ nke kachasị ike.

Ihe achọrọ maka teknụzụ na ụkpụrụ ịdị mma maka hydroxyethyl cellulose
Ihe ndị a: Ndochi anya molar (MS) 2.0-2.5 Mmiri (%) ≤5 Mmiri anaghị agbaze (%) ≤0.5 Uru PH 6.0-8.5 Ígwè dị arọ (ug/g) ≤20 Ntụ (%) ≤5 Viscosity (mpa.s) 2% 20 ℃ mmiri mmiri 5-60000 ndu (%) ≤0.001

Ojiji nke hydroxyethyl cellulose
【Jiri 1】Ejiri ya dị ka ihe na-eme ka mmiri dị nro, ihe na-eme ka mmiri dị arọ, ihe na-echebe colloidal, mmiri na-agbawa agbawa nke mmanụ, ihe na-ekesa polystyrene na polyvinyl chloride, wdg.
[Jiri nke abụọ] A na-eji ya dị ka ihe na-eme ka mmiri dị arọ ma na-ebelata mfu mmiri maka mmiri na mmiri na-agbapụta mmiri, ọ na-emekwa ka mmiri mmiri dị nro nke ọma. A pụkwara iji ya dị ka ihe na-ebelata mfu mmiri maka simenti olulu mmanụ. Enwere ike iji ya na ion ígwè polyvalent jikọta ya iji mepụta jel.
[Jiri nke 3] A na-eji ngwaahịa a dị ka ihe na-agbasa polymeric maka mmiri mmiri na-agbaji gel, polystyrene na polyvinyl chloride n'ịgwupụta fracturing. Enwere ike iji ya dị ka ihe na-eme ka emulsion sie ike na ụlọ ọrụ agba, hygrostat na ụlọ ọrụ eletrọnịkị, ihe na-egbochi simenti na ihe na-ejide mmiri n'ụlọ ọrụ owuwu. Ihe na-eme ka seramiiki na ihe na-ejikọ ezé ezé. A na-ejikwa ya eme ihe n'ọtụtụ ebe na ibipụta na agba agba, ákwà, ime akwụkwọ, ọgwụ, ịdị ọcha, nri, sịga, ọgwụ nje na ihe na-eme ka ọkụ gbazee.
[Jiri nke 4] A na-eji ya dị ka ihe na-eme ka mmiri dị nro, ihe na-echebe colloidal, ihe na-eme ka mmiri dị nro maka vinyl chloride, vinyl acetate na emulsions ndị ọzọ, yana ihe na-eme ka mmiri dị nro, ihe na-agbasa, na ihe na-eme ka mmiri dị nro maka latex. A na-ejikarị ya eme ihe n'ihe mkpuchi, eriri, agba agba, ime akwụkwọ, ihe ịchọ mma, ọgwụ, ọgwụ nje, wdg. O nwekwara ọtụtụ ojiji n'ọrụ nchọpụta mmanụ na ụlọ ọrụ igwe.
【Jiri 5】Hydroxyethyl cellulose nwere ọrụ nke ịrụ ọrụ elu, ịka nká, ịkwụsịtụ, ijikọ, ime emulsifying, ịmepụta ihe nkiri, ịgbasa, idobe mmiri na inye nchebe na nkwadebe ọgwụ siri ike na mmiri mmiri.

Ngwa nke hydroxyethyl cellulose
A na-eji ya eme ihe n'ihe mkpuchi ụlọ, ihe ịchọ mma, ihe nhicha ezé, ihe ndị na-eme ka ihe dị n'ime mmiri ...

Mpempe akwụkwọ nchekwa ihe nke Hydroxyethyl Cellulose (MSDS)
1. Ngwaahịa a nwere ike ịgbawa uzuzu. Mgbe ị na-ejikwa nnukwu ọnụọgụ ma ọ bụ n'ọtụtụ, kpachara anya ka ị ghara itinye uzuzu n'ikuku ma ọ bụ nkwụsịtụ, ma zere okpomọkụ, ọkụ, ọkụ na ọkụ eletrik na-anaghị agbanwe agbanwe. 2. Zere ntụ methylcellulose ka ọ ghara ịbanye ma ọ bụ metụ anya, ma yikwasị ihe mkpuchi nzacha na enyo nchekwa mgbe ị na-arụ ọrụ. 3. Ngwaahịa a na-amị amị nke ukwuu mgbe mmiri dị mmiri, a ga-ehichakwa ntụ methylcellulose a wụfuru n'oge ma mee ọgwụgwọ mgbochi ịmịpụ.

Njirimara nchekwa na njem nke hydroxyethyl cellulose
Nkwakọ ngwaahịa: akpa akwa abụọ, akpa akwụkwọ mejupụtara mpụta, akpa ihe nkiri polyethylene dị n'ime, ibu dị arọ 20kg ma ọ bụ 25kg kwa akpa.
Nchekwa na njem: Debe n'ime ụlọ ebe ikuku na-eku ume ma kpọọ nkụ, ma lezie anya na mmiri mmiri. Mmiri ozuzo na anwụ na-echebe mgbe a na-ebuga ya.

Usoro nkwadebe nke hydroxyethyl cellulose
Usoro nke 1: Mikpuo ihe mkpuchi owu a na-anaghị amị amị ma ọ bụ pulp a nụchara anụcha na 30% lye, wepụ ya mgbe ọkara awa gachara, wee pịa ya. Pịa ya ruo mgbe oke ọdịnaya mmiri alkali ruru 1:2.8, wee gaa na ngwaọrụ a na-agweri egweri. Tinye eriri alkali a gweri egweri n'ime ketulu mmeghachi omume. A na-emechi ya ma wepụ ya, jupụta ya na nitrogen. Mgbe ị jiri nitrogen dochie ikuku dị na ketulu ahụ, pịa mmiri ethylene oxide a gweri egweri. Meghachi omume n'okpuru oyi na 25°C maka awa 2 iji nweta hydroxyethyl cellulose dị nro. Saa ngwaahịa ahụ na mmanya ma gbanwee uru pH ka ọ bụrụ 4-6 site na ịgbakwunye acetic acid. Tinye glyoxal maka njikọta na ịka nká, saa ya ngwa ngwa na mmiri, wee mechaa centrifuge, kpọọ nkụ, ma gwerie ya iji nweta obere nnu hydroxyethyl cellulose.
Usoro nke Abụọ: Alkali cellulose bụ polymer eke, mgbanaka eriri ọ bụla nwere otu hydroxyl atọ, otu hydroxyl kachasị arụ ọrụ na-emeghachi omume iji mepụta hydroxyethyl cellulose. Mikpuo linters owu a na-anaghị amị amị ma ọ bụ pulp a nụchara anụcha na soda caustic mmiri mmiri 30%, wepụ ya ma pịa ya mgbe ọkara awa gachara. Pịa ruo mgbe oke mmiri alkaline ruru 1:2.8, wee gwerie ya. Tinye alkali cellulose a gbawara agbawa n'ime ketulu mmeghachi omume, mechie ya, kpoo ya ọkụ, jupụta ya na nitrogen, ma megharịa vacuumization na nitrogen njupụta iji dochie ikuku dị na ketulu kpamkpam. Pịa n'ime mmiri ethylene oxide a jụrụ oyi, tinye mmiri oyi n'ime jaket nke ketulu mmeghachi omume, ma chịkwaa mmeghachi omume ahụ na ihe dị ka 25°C ruo awa abụọ iji nweta hydroxyethyl cellulose dị ọcha. A na-asa ngwaahịa ahụ na mmanya, na-eme ka ọ dị ọcha ruo pH 4-6 site na ịgbakwunye acetic acid, ma jikọta ya na glyoxal maka ịka nká. Mgbe ahụ, a na-asa ya na mmiri, na-eme ka mmiri dị jụụ site na centrifugation, kpọọ nkụ ma gwakọta ya iji nweta hydroxyethyl cellulose. Oriri ihe eji emepụta ihe (kg/t) owu ma ọ bụ obere pulp 730-780 mmiri mmiri caustic soda (30%) 2400 ethylene oxide 900 mmanya (95%) 4500 acetic acid 240 glyoxal (40%) 100-300
Hydroxyethyl cellulose bụ ntụ ntụ ọcha ma ọ bụ odo odo nke na-enweghị isi, enweghị uto na mmiri dị mfe ịgba, nke a na-agbaze na mmiri oyi na mmiri ọkụ, nke a na-agbazekarị n'ọtụtụ ihe mgbaze organic.
Hydroxyethyl cellulose (HEC) bụ ihe siri ike nke na-acha ọcha ma ọ bụ odo odo dị mfe, nke na-enweghị isi, nke na-anaghị egbu egbu ma ọ bụ nke na-esi ísì, nke a na-akwadebe site na mmeghachi omume etherification nke alkaline cellulose na ethylene oxide (ma ọ bụ chlorohydrin). Cellulose ethers nke na-agbaze na-abụghị ionic. N'ihi na HEC nwere ezigbo ihe onwunwe nke ịka nká, nkwụsịtụ, ịgbasa, emulsifying, njikọta, imepụta ihe nkiri, ichebe mmiri na inye colloid nchebe, ejirila ya mee ihe nke ọma na nchọpụta mmanụ, mkpuchi, owuwu, ọgwụ, nri, ákwà, akwụkwọ na polymer Polymerization na ubi ndị ọzọ. 40 mesh sieving rate ≥ 99%; okpomọkụ dị nro: 135-140°C; njupụta doro anya: 0.35-0.61g/ml; okpomọkụ decomposition: 205-210°C; ọsọ ọkụ nwayọ; okpomọkụ nha nha: 23°C; 50% 6% na rh, 29% na 84% rh.

Otu esi eji hydroxyethyl cellulose
agbakwunyere ozugbo n'oge mmepụta
1. Tinye mmiri dị ọcha n'ime nnukwu bọket e ji ihe na-agwakọta ihe dị elu mee.
hydroxyethyl cellulose
2. Malite ịkpalite ya mgbe niile n'ọsọ dị ala ma jiri nwayọ gwakọta hydroxyethyl cellulose n'ime mmiri ahụ nke ọma.
3. Gaa n'ihu na-agwakọta ruo mgbe ihe niile dị n'ime mmiri.
4. Tinye ihe nchekwa àmụ̀mà, ihe mgbakwunye ndị bụ isi dị ka agba, ihe enyemaka mgbasa, mmiri ammonia.
5. Gwakọta ruo mgbe hydroxyethyl cellulose niile gbazere kpamkpam (ọbara ọbara nke ihe ngwọta ahụ na-abawanye nke ukwuu) tupu etinye ihe ndị ọzọ na usoro ahụ, ma gwerie ya ruo mgbe ngwaahịa ahụ mechara.
E tinyere mmanya nne
Usoro a bụ ịkwadebe ihe ọṅụṅụ nne nwere oke njupụta, wee tinye ya na agba latex. Uru nke usoro a bụ na ọ nwere ike ịgbanwe agbanwe karịa ma enwere ike itinye ya ozugbo na agba emechara, mana ekwesịrị ịchekwa ya nke ọma. Usoro ndị a yiri Nzọụkwụ 1-4 na Usoro 1, ihe dị iche bụ na ọ dịghị mkpa ịgwakọta ruo mgbe ọ ga-agbaze kpamkpam ka ọ bụrụ ihe ngwọta viscous.
Porridge maka phenology
Ebe ọ bụ na ihe mgbaze organic anaghị arụ ọrụ nke ọma maka hydroxyethyl cellulose, enwere ike iji ihe mgbaze organic ndị a kwadebe porridge. Ihe mgbaze organic ndị a na-ejikarị eme ihe bụ mmiri organic dịka ethylene glycol, propylene glycol na ihe nkiri (dịka ethylene glycol ma ọ bụ diethylene glycol butyl acetate) na nhazi agba. Mmiri ice bụkwa ihe mgbaze na-adịghị mma, yabụ a na-ejikarị mmiri ice eme ihe yana mmiri organic iji kwadebe porridge. Enwere ike itinye hydroxyethyl cellulose nke porridge ozugbo na agba ahụ, a na-ekewa hydroxyethyl cellulose ma gbasaa na porridge ahụ. Mgbe etinyere ya na agba ahụ, ọ na-agbaze ozugbo ma na-arụ ọrụ dị ka ihe na-eme ka ọ dị arọ. Mgbe etinyere ya, nọgide na-akpali ya ruo mgbe hydroxyethyl cellulose ga-agbaze kpamkpam ma dịrị otu. N'ozuzu, a na-eme porridge site na ịgwakọta akụkụ isii nke ihe mgbaze organic ma ọ bụ mmiri ice na otu akụkụ nke hydroxyethyl cellulose. Mgbe ihe dị ka nkeji 6-30 gachara, hydroxyethyl cellulose ga-aghọ hydrolyzed ma zaa nke ọma. N'oge ọkọchị, okpomọkụ mmiri na-adịkarị oke elu, yabụ ọ dịghị mma iji porridge.

Ihe ndị dị mkpa maka hydroxyethyl cellulose
Ebe ọ bụ na hydroxyethyl cellulose nke a na-agwọ n'elu ya bụ ntụ ntụ ma ọ bụ cellulose siri ike, ọ dị mfe ijikwa ma gbazee ya na mmiri ma ọ bụrụhaala na a na-elebara ihe ndị a anya.
1. Tupu na mgbe etinyere hydroxyethyl cellulose, a ga-agwakọta ya mgbe niile ruo mgbe ngwọta ahụ ga-apụta ìhè ma doo anya nke ọma.
2. A ga-eji nwayọ gwakọta ya n'ime tankị ngwakọta ahụ, etinyela nnukwu hydroxyethyl cellulose ma ọ bụ hydroxyethyl cellulose nke mepụtara akpụkọ na bọọlụ n'ime tankị ngwakọta ahụ. 3. Okpomọkụ mmiri na uru PH dị na mmiri nwere njikọ doro anya na mgbasa nke hydroxyethyl cellulose, yabụ a ga-elebara ya anya nke ọma.
4. Etinyela ihe alkaline na ngwakọta ahụ tupu ntụ hydroxyethyl cellulose emee ka ọ dị ọkụ site na mmiri. Ịbawanye uru pH mgbe ị gbasịrị ọkụ ga-enyere aka ịgbaze.
5. Ruo n'ókè o kwere mee, tinye ihe na-egbochi fungal n'oge o kwere mee.
6. Mgbe a na-eji hydroxyethyl cellulose nke nwere oke viscosity, oke mmanya nne ekwesịghị ịdị elu karịa 2.5-3%, ma ọ bụghị ya, mmanya nne nne ga-esi ike ijikwa. hydroxyethyl cellulose nke a gwọrọ mgbe a gwọchara ya anaghị adị mfe ịmepụta akpụkọ ma ọ bụ okirikiri, ọ gaghịkwa emepụta colloids gburugburu na-anaghị agbaze mgbe a gbanyere ya mmiri.
A na-ejikarị ya eme ihe dị ka ihe na-eme ka ihe sie ike, ihe na-echebe mmadụ, ihe na-arapara, ihe na-eme ka ihe sie ike na ihe mgbakwunye maka nkwadebe emulsion, jelii, mmanụ, ude mmiri, ihe na-ehicha anya, ihe na-eme ka ọ dị ọcha na mbadamba, a na-ejikwa ya eme ihe dị ka gel hydrophilic na ihe ọkpụkpụ 1. Nkwadebe nke nkwadebe ndị na-adịgide adịgide nke ụdị ọkpụkpụ. Enwere ike iji ya mee ihe dị ka ihe na-eme ka ihe sie ike na nri.