Kukonzekera ndi kugwiritsa ntchito hydroxypropyl methyl cellulose

Hydroxypropyl Medielose (HyPromellose) ndi yoyera kwambiri ya celluose kapena pelleble yomwe ili ndi malo otentha ozizira komanso yopanda methyl cellulose. Bungwe la Hydroxypropyl ndi methyl mulingo wa ether ndi cellulous the clulose glucose shuga wophatikizidwa, ndi ma cellulose osakaniza ether. Ndiopanga zopanga, zopanda pake, ma viscoelastic nthawi zambiri amagwiritsidwa ntchito mu ophthalmology monga mafuta kapena ngati ophatikizira kapena otayika mu pakamwa

Kukonzekera kwa
Pulogalamu ya Kraft Pulp yokhala ndi α-cellose yokhala ndi 97% ya mafayilo a 770ml / g ndi pafupifupi 99% adaphatikizidwa mu 49% Naoh adathetsa pa 40 ℃ kwa masekondi 50. Zotsatira zake zinali zotakamwa kuti zichotse zochuluka za 49% Naoh aquash yankho kuti mupeze alkali. Chiwerengero chokwanira cha (49% Naoh m'madzi) kuti (chinthu cholimba mu prp) poyerekeza ndi 200. Chigawo choyipitsitsa. Alkali cellouluse (20kg) omwe adapeza adayikidwa mu jakisoni adayikidwa jakisoni ndi kusokonekera mkati ndipo adatsuka ndi mpweya wa nayitrogeni kuti muchotse mpweya wabwino. Kenako, kutentha kwa riyakitala chidayang'aniridwa pa 60 ℃, pomwe kuchititsa kwamkati kunachitika. Ndiye, 2.4kg wa dimethyl ether adawonjezeredwa ndipo matenthedwe a rimethyl adawonjezeredwa, methylene chloride adawonjezeredwa 1.97, ndipo kutentha mu riyakitala chidayang'aniridwa kuyambira 60 ° C mpaka 80 ° Chlorthethane ndi Prodeyne wa ridide adayang'aniridwa kuchokera ku 80 ℃ mpaka 90 ℃ mpaka 90 ℃. Kuphatikiza apo, zomwe zimasungidwa pa 90 ° C kwa mphindi 20. Kenako, gasiyo imachotsedwa kwa riyakitalayo, ndipo ma hydroxypropyl noth cellulose amachotsedwa kwa Articy. Kutentha kwa rode hydrobypypypyl methylcellulose kunali 62 ℃ pomwe idachotsedwa. Yerekezerani kukula kwa tinthu tating'onoting'ono tomwe timapilira tinthu tating'onoting'ono tinthu tating'onoting'ono tinthu tating'onoting'ono tinthu tatio hydroxypyulose polojekiti m'mawonekedwe asanu, iliyonse imakhala ndi kukula koyambirira. Zotsatira zake, pafupifupi tinthu tating'onoting'ono ta tinthu tating'onoting'ono ndi 6.2mm. Zomwe zapezeka za roderopypypypypyl methylcellulose zidayambitsidwa munthawi yopitilira muyeso (krc id - 10.2, ROMPEDE) pothamanga kwa 10kg. Monga momwe amawerengera mofananamo kugwiritsa ntchito zojambula zisanu ndi zikuluzikulu zoyambira, kukula kwa tinthu kunali 1.4mm. Kusuta kunapezeka powonjezera madzi otentha ku 80 ° C kwa Stupopropyl hydrocyllulose Kusuta kunasunthidwa nthawi zonse kwa 80 ° C kwa mphindi 60. Kenako, malo otsekemera amaperekedwa ku zosefera zomera zozungulira (bhs snoferofen) ndi liwiro la 0,5 rpm ndikukhala wotenthetsedwa. Kutentha kwa slurry kunali 93 ℃. Kusuta kumaperekedwa ndi pampu ndi zotupa za 0,2mpha. Kukula kotseguka kwa zosefera kuzungulira ndi 80μm, ndi malo osewerera ndi 0.12M2. Kusungunuka komwe kunaperekedwa ku Frashi yovunda yozungulira kumasefedwa kudzera mu fyuluta ndikusintha kukhala keke. Keke yomwe idapangidwa ndi nthunzi ya 0.3mpu ndi madzi otentha pa 95 ° ° pa 95 mpaka gawo lolimba la mankhwala otsuka hydroxycyulose kenako osasefedwa kudzera mu fyuluta. Madzi otentha amaperekedwa ndi pampu yokhala ndi zotupa za 0,2mpha. Madzi otentha ataperekedwa, 0.3mpu ya nthunzi imaperekedwa. Zosambitsidwa padziko lapansi zimachotsedwa kudzera mu starpiper ndikutuluka kuchokera kumaso. Masitepe opitilizabe kuchokera ku malo osalala pakutulutsa kotsukidwa. Madzi omwe ali ndi matenda otsukidwa anali 52.8% monga amayesedwa ndikutenthetsa youma hygrometer. Zinthu zotsukidwa zotulutsidwa kuchokera ku zosefera zovunda zozungulira zidawuma pogwiritsa ntchito mpweya wa mpweya pa 80 ° C ndi kuphwanyidwa mu hydroxpyulose.

karata yanchito
Izi zimagwiritsidwa ntchito ngati wothandizira kukula, wobalalitsa, binder, emulsifier ndi kukhazikika m'makampani ojambula. Amagwiritsidwanso ntchito kwambiri mu stores yopanda, sorochemical, ceramic, pepala, chikopa, mankhwala, chakudya, zodzoladzola ndi mafakitale ena.