HydroxyPropyl Methyl Cellulose HPMC, izwi kandi nka hydroxypropllose, ni igifu cyo kuri selile off-cyera cyangwa amazi ashyushye adafite ubushongo bwa methyl. Itsinda rya HydroxyPropyl na methyl itsinda ni ether bond hamwe na glucous glucose impeta ya selile ihuriweho, nuburyo bwa selile itari ionic ivanze ether. Nibisanzwe, polymer polymer, vielomes isanzwe ikoreshwa nka lubricant mumaso ya ophthalmology, cyangwa nkibyabaye cyangwa ibisebe mumiti yo mumvugo.
1. Inzira yo gukora
Kraft Pulp hamwe na αcellulose ibikubiye 97%, visconsique ya 720ml / G hamwe nimpuzandengo ya fibre ya 2.6mm yashizwemo 49% igisubizo kuri 40 ℃ kumasegonda 50. Hanyuma, imyuka yahagaritse gukuraho ibirenze 49% yo kubona selile ya alkali. Ikigereranyo cyibiro cya (49% Naoh Igisubizo cya Aodoous) kuri (ibice bikomeye bya Pulp) mu ntambwe yo kutavuga ni 200. Ikigereranyo kiremewe cya Naoh muri Alkali Cellus akomeye muri Pulp ni 1.49. Alkali selile yabonetse cyane (20kg) ishyirwa mu kaga gakondo ya react hamwe no guhagarika imbere, hanyuma akinisha kandi asukura na azote kugirango ikureho ogisijeni muri reaksitor. Noneho, ubushyuhe bwo muri Reaction bwagenzurwaga saa 60 ℃ mugihe ibihano imbere byakorwaga.
Noneho 2.4Kg DME Yongeyeho kandi ubushyuhe muri Reaction bwagenzurwaga kugeza kuri 60 ℃. Nyuma yo kongeramo Dimethyl Ether, Methylene Chloride yongereye igipimo cya kiliziya ya methylene kuri Naoh muri Alkaline Oxide ya Alkaline yagenzuwe na 60 ℃ kugeza 80 ℃. Nyuma yo kongeramo chloromethane na propantylene okiside, ubushyuhe muri Reaction bwagenzurwaga na 80 ℃ kugeza 90 ℃. Byongeye kandi, reaction yamaze iminota 20 kuri 90 ℃.
Gazi noneho iramennye muri reaction na hydroxypropyl methyl selile yakuwe muri reaction. Ubushyuhe bwa hydroxyproppoppoppopyl methyl selile yari 62 ℃. Gupima ingano ya 50% murwego rwo gukwirakwiza uburemere bushingiye ku gipimo gishingiye ku gipimo cya hydroxyPropyl Methyl Cellrap, buri wese afite ubunini butandukanye.
Nkigisubizo, impuzandengo yubunini bwibice bifatanye byari 6.2mm. Ababonye HordroxyPropyl Methyl Methyl Methyl Me1, L / D.2, Umuvuduko w'imbere 150rpm) ku muvuduko wa 10 kr Nkibisubizo byibipimo bisa ukoresheje ecran 5 hamwe nubunini butandukanye bwo gufungura, impuzandengo yikigereranyo yari 1.4mm. Ongeraho 80 ℃ Amazi ashyushye kuri decoxypropyl Methyl Cellulose muri tank hamwe no kugenzura ubushyuhe bwikoti. Umubare wibipimo byuburemere bwa hydroxypropyl methyl selile kugeza kumafaranga yose aranyerera ni 0.1, kandi ibituba biraboneka. Gutandukana byatewe n'ubushyuhe buri gihe cya 80 ℃ muminota 60.
Noneho, ibitotsi bitangwa kumuvuduko uzunguruka wa 0.5 rpm hamwe no gukinisha urugamba rwo kuyungurura (BHS Sonhofen ibicuruzwa). Ubushyuhe bwa grout ni 93 ℃. Koresha pompe kugirango utange ibishushanyo, pompe pompe ni 0.2mpa. Ingano yo gufungura igitutu cyumukino ni 80μm, hanyuma akayunguruzo ni 0.12m2. Igitonyanga cyatanzwe ku muyunguruzo ka Rotary kiyungurura kinyuze muyungurura kandi gihinduka umukandara. Akazu kavuyemo kake katangwa hamwe na 0.3MPA amazi ya 95 ℃ Amazi ashyushye afite ibipimo bikomeye byo gukaraba hydroxyPropyl methyl Methiose, hanyuma ayungurura anyuze muyungurura.
Amazi ashyushye atangwa binyuze kuri pompe kumuvuduko wa 0.2. Nyuma y'amazi ashyushye atangwa, 0.3MPA Steam yatanzwe. Noneho, nyuma yo koza ibicuruzwa bivanwa hejuru yisi n'ibisimba kandi bisohoka mu mashini imesa. Intambwe zo gutanga ibikeshwa kugirango zisohore ibicuruzwa byogejwe bikorwa ubudahwema. Nkuko byapimwe hakoreshejwe ubushyuhe - Kuma Hygrometero, amazi yibicuruzwa byogejwe rero arekuwe ni 52.8%. Ibicuruzwa byogejwe bivuye mu kaga gakondo ka Rowory byumye mu kirere gifite umwuka kuri 80 ℃, kandi bajanjagurwa mu ruganda rutsinze kugira ngo babone hydroxyPro
2.aPPATION
Ibicuruzwa bya HPMC bikoreshwa nka Thickener, ikwirakwizwa, binder, emalifier na stabilizer mu nganda zimyenda. Ibikoreshwa cyane muri synthectic resin, petrochemical, ceramic, impapuro, uruhu, ubuvuzi, kwisiga, kwisiga nizindi nganda.
Igihe cya nyuma: Werurwe-23-2022