1 Okwu Mmalite
Kemgbe e mepụtara agba ndị na-eme ka ihe dị nro, sodium alginate (SA) abụrụla isi ihe e ji ebi akwụkwọ agba ndị na-eme ka ihe dị nro n'ákwà owu.
Iji ụdị atọ ahụcellulose ethersCMC, HEC na HECMC kwadebere na Isi nke 3 dị ka ihe e ji mee ihe mbụ, e tinyere ha na mbipụta agba na-emegharị ahụ n'otu n'otu.
okooko osisi. A nwalere ma tụnyere ihe ndị bụ isi na ihe ndị e ji ebi akwụkwọ nke mado atọ ahụ, a nwalekwara eriri atọ ahụ.
Njirimara mbipụta nke vitamin ethers.
Akụkụ nnwale 2
Ihe nnwale na ọgwụ
Ihe ndị e ji mee ihe na ọgwụ ndị e ji mee nnwale ahụ. N'ime ha, ákwà e ji agba agba eme ihe na-egosi na e ji ihe ndị e ji arụ ọrụ arụ arụ arụ, dịka ime ka nha na ime ka ihe dị mma, wdg.
Usoro ákwà owu dị ọcha e ji ákwà mee nke ọma, nke dị njupụta 60/10cm × 50/10cm, ákwà owu 21tex × 21tex.
Nkwadebe nke mpịpụta mbipụta na mpịpụta agba
Nkwadebe nke mado mbipụta
Maka ihe mmado mbụ anọ nke SA, CMC, HEC na HECMC, dịka oke nke ọdịnaya siri ike dị iche iche si dị, n'okpuru ọnọdụ mkpali
Mgbe ahụ, jiri nwayọọ nwayọọ tinye ihe mgbakwasa ahụ n'ime mmiri, nọgide na-akpali ya ruo oge ụfọdụ, ruo mgbe ihe mgbakwasa mbụ ahụ ga-adị otu ma doo anya, kwụsị ịkpagharị ya, ma tinye ya n'elu stovu ahụ.
N'ime iko, hapụ ya ka ọ nọdụ n'abalị.
Nkwadebe nke mado mbipụta
Buru ụzọ gbazee urea na nnu S na-egbochi agba agba na obere mmiri, wee tinye agba ndị na-eme ka mmiri gbazee, kpoo ọkụ ma gwakọta ya na mmiri ọkụ.
Mgbe ị gwakọtara ya ruo oge ụfọdụ, tinye ihe ọṅụṅụ agba a kpụchara akpụcha na ihe e ji mee ya ma gwakọta ya nke ọma. Tinye ihe mgbaze ahụ ruo mgbe ị malitere ibipụta ya.
Ezigbo sodium bicarbonate. Usoro nke mado agba bụ: agba mmeghachi omume 3%, mado mbụ 80% (ọdịnaya siri ike 3%), sodium bicarbonate 3%,
Nnu S nke na-egbochi mmetọ bụ 2%, urea bụ 5%, n'ikpeazụ a na-agbakwunye mmiri na 100%.
usoro ibipụta akwụkwọ
Usoro mbipụta agba ákwà owu: nkwadebe nke mado mbipụta → mbipụta ihe ndọta magnetik (na okpomọkụ ụlọ na nrụgide, mbipụta ugboro atọ) → ịkpọ nkụ (105℃, nkeji 10) → ịkwọ mmiri (105±2℃, nkeji 10) → ịsa mmiri oyi → ọkụ Ịsa mmiri na mmiri (80℃) → ịcha ncha (flakes ncha 3g/L,
100℃, nkeji 10) → Ịsa mmiri ọkụ (80℃) → Ịsa mmiri oyi → Ịkpọ nkụ (60℃).
Nnwale arụmọrụ bụ isi nke mado mbụ
Nnwale ọnụego mado
E kwadebere mado anọ mbụ nke SA, CMC, HEC na HECMC nwere ọdịnaya siri ike dị iche iche, e tinyekwara Brookfield DV-Ⅱ
E jiri viscometer nwalee viscosity nke pasta ọ bụla nwere ọdịnaya siri ike dị iche iche, mgbanwe nke viscosity na ntinye ahụ bụ ọnụego mmepụta pasta nke pasta ahụ.
gbagọrọ agbagọ.
Ndepụta Viscosity nke Rheology na Mbipụta
Usoro ọgwụgwọ: E jiri MCR301 rheometer ntụgharị tụọ viscosity (η) nke pasta mbụ ahụ na ọnụego ịkpụ dị iche iche.
Mgbanwe nke ọnụego shear bụ usoro rheological.
Ndepụta viscosity nke mbipụta: A na-egosipụta ndepụta viscosity nke mbipụta site na PVI, PVI = η60/η6, ebe η60 na η6 dị n'otu n'otu
Ọbara ike nke pasta mbụ ahụ nke Brookfield DV-II viscometer tụrụ n'otu ọsọ rotor nke 60r/min na 6r/min.
ule njigide mmiri
Tụgharịa gram 25 nke ihe e ji mee ya ka ọ bụrụ beaker nke 80mL, wee jiri nwayọ tinye 25mL nke mmiri a gwakọtara agwakọta ka ị na-agwakọta ya.
A na-agwakọta ya nke ọma. Were akwụkwọ nzacha ọnụọgụgụ nke nwere ogologo × obosara nke 10cm × 1cm, ma jiri akara nha akara mee akara n'otu nsọtụ nke akwụkwọ nzacha ahụ, wee tinye njedebe akara ahụ n'ime paste ahụ, ka ahịrị nha ahụ wee dakọọ na elu paste ahụ, oge ahụ amalitekwa mgbe etinyere akwụkwọ nzacha ahụ, a na-edekwa ya na akwụkwọ nzacha ahụ mgbe nkeji iri atọ gachara.
Ogologo mmiri na-arị elu.
Nnwale Ndakọrịta Kemịkalụ 4
Maka mbipụta agba na-emegharị ahụ, nwalee ndakọrịta nke mado mbụ na agba ndị ọzọ etinyere na mado mbipụta ahụ,
Nke ahụ bụ, ndakọrịta dị n'etiti ihe mpịachi mbụ na ihe atọ ahụ (urea, sodium bicarbonate na nnu mgbochi agba S), usoro nnwale a kapịrị ọnụ bụ ndị a:
(1) Maka ule nke viscosity ntụaka nke pasta mbụ ahụ, tinye 25mL nke mmiri a gwakọtara agwakọta na 50g nke pasta mbụ ahụ, gwakọta ya nke ọma, wee tụọ viscosity ahụ.
A na-eji uru viscosity enwetara dị ka viscosity ntụaka.
(2) Iji nwalee ike nke ihe mgbodo mbụ ahụ mgbe etinyere ihe dị iche iche (urea, sodium bicarbonate na nnu mgbochi agba S), tinye 15% nke a kwadebere.
Mmiri urea (nkebi oke), mmiri nnu S nke na-egbochi ntụpọ 3% (nkebi oke oke) na mmiri sodium bicarbonate 6% (nkebi oke oke)
A gbakwụnye 25mL na 50g nke mado mbụ n'otu n'otu, gwakọta ya nke ọma ma tinye ya ruo oge ụfọdụ, wee tụọ viscosity nke mado mbụ ahụ. N'ikpeazụ, a ga-atụ viscosity ahụ.
A tụnyere uru viscosity ahụ na viscosity ntụaka kwekọrọ, a gbakọọkwara pasent nke mgbanwe viscosity nke mado mbụ tupu na mgbe etinyere agba na ihe kemịkalụ ọ bụla.
Nnwale Ịkwụsi Ike Nchekwa
Debe pasta mbụ ahụ n'okpomọkụ ụlọ (25°C) n'okpuru nrụgide nkịtị ruo ụbọchị isii, tụọ viscosity nke pasta mbụ ahụ kwa ụbọchị n'okpuru otu ọnọdụ ahụ, ma gbakọọ viscosity nke pasta mbụ ahụ mgbe ụbọchị isii gachara ma e jiri ya tụnyere viscosity nke a tụrụ n'ụbọchị mbụ site na usoro 4-(1). A na-enyocha ogo mgbasa nke pasta mbụ ọ bụla site na ogo mgbasa dị ka index.
Nchekwa kwụsiri ike, ka mgbasa ahụ dị obere, otú ahụ ka nchekwa nke mado mbụ ahụ si ka mma.
Nnwale ọnụego mmịfe
Buru ụzọ kpoo ákwà owu ahụ ka e bipụta ya ruo mgbe ọ ga-adị arọ, tụọ ya ma dekọọ ya dị ka mA; wee kpoo ákwà owu ahụ mgbe e bipụtasịrị ya ruo mgbe ọ ga-adị arọ, tụọ ya ma dekọọ ya.
bụ mB; n'ikpeazụ, ákwà owu e biri ebi mgbe e tinyere uzuoku, ncha na ịsa ahụ ka ọ bụrụ ibu dị arọ, tụọ ya ma dekọọ ya dị ka mC
Nnwale aka
Nke mbụ, a na-enyocha ákwà owu tupu e bipụta ya na mgbe e bipụtachara ya dịka ọ dị mkpa, e mesịa, a na-eji ngwa ụdị ákwà phabrometer tụọ otú ákwà ndị ahụ si arụ ọrụ.
E lere anya nke ọma n'otú ákwà ahụ si emetụta aka tupu e bipụta ya na mgbe e bipụtachara ya site n'ịtụnyere njirimara aka atọ nke ịdị nro, isi ike na ịdị nro.
Nnwale agba nke ákwà e biri ebi
(1) Agba ọsọ ruo ule ịpịcha agba
Nwalee dịka iwu GB/T 3920-2008 si dị "Ịgba agba ruo n'ịcha ákwà maka ule agba agba nke ákwà".
(2) Nnwale agba ọsọ ruo ịsa ahụ
Nnwale dịka GB/T 3921.3-2008 si kwuo "Nnwale agba iji mee ka ákwà sie ike ma ọ bụ sachaa agba ya".
Ọdịnaya siri ike nke mado mbụ/%
CMC
HEC
HEMCC
SA
Mgbanwe nke viscosity nke ụdị pasta mbụ anọ nwere ọdịnaya siri ike
Ndị a bụ sodium alginate (SA), carboxymethyl cellulose (CMC), hydroxyethyl cellulose (HEC) na
Usoro viscosity nke ụdị pastọ hydroxyethyl carboxymethyl cellulose (HECMC) anọ dị ka ihe siri ike.
, ike nke pasta anọ mbụ mụbara ka ọdịnaya siri ike na-abawanye, mana ihe ndị na-emepụta pasta nke pasta anọ mbụ abụghị otu, gụnyere SA
Ihe mkpuchi nke CMC na HECMC kacha mma, ihe mkpuchi nke HEC kacha njọ.
E jiri usoro rheometer ntụgharị MCR301 tụọ usoro arụmọrụ rheological nke pastes mbụ anọ ahụ.
- Usoro viscosity dịka ọnụego viscosity si dị. Viscosity nke pasta anọ mbụ niile mụbara ka ọnụego skewer dị.
mmụba na mbelata, SA, CMC, HEC na HECMC bụ mmiri mmiri pseudoplastic. Tebụl 4.3 Uru PVI nke ọtụtụ mado raw
Ụdị mado raw SA CMC HEC HECMC
Uru PVI 0.813 0.526 0.621 0.726
Enwere ike ịhụ site na Tebụl 4.3 na ndeksi viscosity mbipụta nke SA na HECMC buru ibu karịa, viscosity nhazi dịkwa obere, ya bụ, mado mbụ ebipụtara.
N'okpuru ọrụ nke ike ịkpụ obere, ọnụego mgbanwe viscosity dị obere, ọ na-esikwa ike imezu ihe achọrọ nke ihuenyo rotary na mbipụta ihuenyo dị larịị; ebe HEC na CMC
Ndekọ viscosity nke CMC bụ naanị 0.526, viscosity nhazi ya dịkwa oke ibu, ya bụ, pasta mbipụta mbụ nwere ike ịkpụcha dị ala.
N'okpuru ihe a na-eme, ọnụego mgbanwe viscosity dị oke, nke nwere ike imezu ihe achọrọ nke ihuenyo rotary na mbipụta ihuenyo dị larịị, ọ nwekwara ike ịdị mma maka mbipụta ihuenyo rotary nwere nọmba mesh dị elu.
Ọ dị mfe inweta ụkpụrụ na ahịrị doro anya. Viscosity/mPa·s
Usoro rheological nke ihe nhicha siri ike anọ nke 1%
Ụdị mado raw SA CMC HEC HECMC
h/cm 0.33 0.36 0.41 0.39
Nsonaazụ nnwale nke 1%SA, 1%CMC, 1%HEC na 1%HECMC nke e ji mee ihe n'ime mmiri.
A chọpụtara na ikike ijide mmiri nke SA bụ nke kacha mma, CMC na-esochi ya, HECMC na HEC na-esochikwa ya nke ka njọ.
Ntụnyere Ndakọrịta Kemịkalụ
Mgbanwe nke viscosity mbụ nke SA, CMC, HEC na HECMC
Ụdị mado raw SA CMC HEC HECMC
Viscositi/mPa·s
Viscosity mgbe etinyere urea/mPa s
Viscosity mgbe etinyere nnu mgbochi ntụpọ S/mPa s
Viscosity mgbe etinyere sodium bicarbonate/mPa s
Nnwale mado anọ dị mkpa nke SA, CMC, HEC na HECMC na-adị iche site na ihe mgbakwunye atọ bụ isi: urea, nnu mgbochi agba S na
A na-egosi mgbanwe ndị dị na mgbakwunye nke sodium bicarbonate na tebụl., mgbakwunye nke ihe mgbakwunye atọ bụ isi, na mado mbụ
Ọnụego mgbanwe na viscosity dị iche iche nke ukwuu. N'ime ha, mgbakwunye nke urea nwere ike ime ka viscosity nke pasta mbụ dịkwuo elu site na ihe dịka 5%, nke nwere ike ịbụ
Ọ bụ mmetụta hygroscopic na puff nke urea kpatara ya; nnu S nke na-egbochi ntụpọ ga-emekwa ka viscosity nke pasta mbụ dịkwuo elu, mana ọ naghị enwe mmetụta dị ukwuu;
Mgbakwunye nke sodium bicarbonate belatara oke viscosity nke pasta mbụ ahụ, nke CMC na HEC belatara nke ukwuu, yana viscosity nke HECMC/mPa·s.
66
Nke abụọ, ndakọrịta nke SA ka mma.
SA CMC HEC HECMC
-15
-10
-5
05
Urea
Nnu na-egbochi ntụpọ S
sodium bicarbonate
Ndakọrịta nke pasta ngwaahịa SA, CMC, HEC na HECMC na kemịkal atọ
Ntụnyere nkwụsi ike nchekwa
Mgbasa nke viscosity kwa ụbọchị nke ụdị pasta dị iche iche
Ụdị mado raw SA CMC HEC HECMC
Mgbasa/% 8.68 8.15 8.98 8.83
bụ ọkwa mgbasa nke SA, CMC, HEC na HECMC n'okpuru viscosity kwa ụbọchị nke pasta mbụ anọ ahụ, mgbasa ahụ
Ka uru nke ogo dị obere, otú ahụ ka nchekwa nke pasta mbụ kwekọrọ na-aka mma. A pụrụ ịhụ site na tebụl na nchekwa nke CMC raw mado dị mma nke ukwuu.
Nchekwa nke HEC na HECMC raw mado anaghị adị mma, mana ọdịiche ahụ adịghị oke mkpa.
Oge ozi: Sep-29-2022