Hydroxypyl Methyl Cellulose (hypromellose) bụ pellulose ntụ ntụ ma ọ bụ pellet nke nwere akụrụngwa nke ịmị mmiri oyi na innosuble na mmiri ọkụ dị ka methy cellulose. Gydroxyyl otu na otu methl bụ njikọ nke eji eme ihe na akwara mkpụrụ osisi glucose nke ọma, bụ mkpụrụ ndụ cellulose agwakọta ether. Ọ bụ senyo na-aga, onye na-adịghị arụ ọrụ, vistolastic polymealastic nke a na-ejikarị na ophthanlogy dị ka mmanu ma ọ bụ dị ka ihe na-adịghị mma ma ọ bụ na-enweghị atụ
Nkwadebe nke
Akwụkwọ kraft na-eji akwụkwọ 97%, visensic vissicosity nke 720ml / g na nkezi fiber na 40 ℃ maka sekọnd iri ise. Ihe ndị a na-ebute puulp ahụ wee wepu ngafe nke 49% na sel oo nwere ike inweta alkali cellulose. Ikike dị elu nke (49% nah na mmiri) ruo (akụrụngwa siri ike na pulp) na nzọ dị na isi cellulose) ruo 1.49. N'ihi ya, a na-etinye eriri selkali (20kg) na-enyeghachi ya na mmechuihu n'ime ụlọ wee pụọ na gas nitrogen ma kpochaa oxygy nke ọma. Mgbe ahụ, a na-achịkwa ọnọdụ okpomọkụ na ihe a na-achịkwa na 60 ℃, ebe a na-eme mkpọmkpọ ebe nke ime. E kwukwara, a na-agbakwunye nke ather na-agbakwunye na ọnọdụ ahụ na-achịkwa ya na 6,3, methyne chloride na-eme ka ogo nke (na-eme ka ọ dị elu) ruo (akụrụngwa siri ike) 1.97, Ma okpomoku a na-achịkwa na ihe mere si na 60 Celsius C ka 80 Celsius C. Mgbe mgbakwunye chloromethane na proflene oxide, a na-achịkwa ọnọdụ okpomọkụ ahụ site na 80 ℃ ruo 90 ℃. Na mgbakwunye, mmeghachi omume a na-emeghachi omume na 90 Celsius C maka nkeji 20. Mgbe ahụ, a na-ewepu gas site na ihe mmeghachi omume, na crud hydropyl methyl celllise na-ewepụ ya na ihe. Ọnọdụ okpomọkụ nke crude hydropyythylthylcelllose bụ 62 ℃ Mgbe e wepụrụ ya. Tụọ nha na - akpụ akpụ nke na - eme ka ihe dị na cumulitive dị nha dabere na nha nke crude hydropyyl na ihuenyo ise, onye ọ bụla nwere oghere mmeghe dị iche. N'ihi nke a, nkezi nha nke ihe ndị siri ike bụ 6.2mm. E webatara Crush Hydropyythylthylthylthylthylthylthylth na-aghọrọ na-aga n'ihu na -aga na-agagharị (KRC Sypeader 15.12, ọsọ ọsọ 15kg / hr iji nweta decompopsylylylylylylylylylylypypylthylpypyl. Dị ka nke na-eji ihuenyo ise na nha oghere dị iche iche, nkezi nkezi bụ 1.4mm. E nwetara slurry site na ịgbakwunye mmiri ọkụ na 80 Celsius C na njikwa okpomọkụ na-eme ka ọ bụrụ (ọnụego nke igwe na-acha uhie uhie) ka a gbanwere ruo 0.1. A na-akpali slurry n'oge okpomọkụ nke 80 Celsius C ruo nkeji 60. Mgbe ahụ, a na-enye ihe ndị ahụ na-eweta rotary nzacha (bhs sonhofen ngwaahịa) na-agbagharị ọsọ nke 0.5 rpm ma na-ewe iwe. Ọnọdụ okpomọkụ nke slurry bụ 93 ℃. A na-eweta mmiri ahụ site na mgbatị ahụ site na mgbatị nke 0.2MPA. Ogo mmeghe nke nzacha ntụgharị njegharị bụ 80μm, mpaghara filtraration bụ 0.12m2. Ihe slurry enyere aka na nzacha nrụgide rotary na-enyocha site na nzacha ma gbanwee n'ime achicha iyo. Ihe ndị a na-esi na ya na-esite na uzuzu nke 0.3mpa na mmiri ọkụ na 95 Celsius C na nha dị arọ nke 10.0 Mmiri na-eweta mmiri ọkụ site na mgbatị nke 0.2Mpa. Mgbe mmiri na-ekpo ọkụ na-enye, 0.3Mpa nke Steam na-enye. A na-asacha ngwaahịa dị n'elu elu nke nzacha ahụ egwechara ya na scraper ma chupu ọhia. Nzọụkwụ na-aga n'ihu site na ntinye nke slurry ka mwepulata ngwaahịa a. Mmiri ọdịnaya nke ihe a na-asa ahụ bụ 52.8% dị ka a tụrụ site na kpo oku na-ekpo ọkụ. Ngwaahịa a na-asacha site na iji mmiri na-efe efe na-eji igwe na-efe efe na 80 Celsius C ma gwepịa na Mill Mill Mill iji nweta hydropyylylylylylylylylylylylylylylyl.
akwukwo icho oru
A na-eji ngwaahịa a dị ka onye na-eche nche, dispents, ihe mgbochi, emulsifier na mmachi ụlọ ọrụ stutry. A na-ejikwa ya n'ọtụtụ ebe, petrochemical, ceramiiki, mpempe akwụkwọ, akwụkwọ, akwụkwọ, nri, ihe nri, ihe ịchọ mma na ụlọ ọrụ ndị ọzọ.
Oge post: Feb-20-2025