Methyl cellulose si weyn ayaa loo isticmaalaa

Methylcellulose waa methyl ether cellulose ah. Caddaan ama huruud khafiif ah ama cawlan khafiif ah qaybo yaryar, fiilo ama budo. Aan ur lahayn oo aan dhadhamin, iyadoo qiyaastii 27% ilaa 32% kooxaha hydroxyl ay ku jiraan qaabka kooxaha methoxy. Heerarka kala duwan ee methyl cellulose waxay leeyihiin heerar kala duwan oo polymerization ah, oo u dhexeeya 50 ilaa 1000; Miisaankiisa kelli (celcelis ahaan) wuxuu u dhexeeyaa 10000 ilaa 22000 Da, heerka beddelkiisana waxaa lagu qeexay celceliska tirada kooxaha methoxy, kuwaas oo ku xiran unug kasta oo glucose anhydride ah oo ku yaal silsiladda.

Nala soo xidhiidh

faahfaahinta alaabta

Sharaxaada

Methylcellulose waa eter cellulose aan-ionic ah, kaas oo lagu soo saaro etherification iyada oo la gelinayo kooxaha methyl cellulose.

sharaxaad2

Tilmaamaha Jirka iyo Kiimikada

1, Muuqashada:Caddaan ama budo granular ah, oo aan ur lahayn oo aan dhadhamin.

2, Xalka:Ku dhawaad ??aan lagu milmi karin ethanol, ether, chloroform (1: 1) ee isku dhafka ah waxay sameyn karaan xal cad ama laalaadiyey. In 80-90 oC biyaha kulul barar degdeg ah, qaboojinta ka dib kala diri degdeg ah, kala diri biyaha ee heerkulka qolka aad u deggan, jel heerkulka sare, Waxa uu maraa kala-beddelka rogaal celiska ah jel ilaa kala diri ka dib kulayl iyo qaboojinta.

3, Astaamaha:Qoyaanka aad u wanaagsan, kala firdhisanaan, xabagsi, dhumucdi, emulsifying, biyo-qabsiga iyo samaynta filimada, iyo saliidda oo aan la dhaafin. Filimku wuxuu leeyahay adkeysi aad u wanaagsan, dabacsanaan iyo daahfurnaan. Sababtoo ah waa non-ionic, waxay la jaan qaadi kartaa emulsifiers kale, laakiin way sahlan tahay in la milixiyo xalkuna wuu xasilloon yahay inta u dhaxaysa pH 2-12.

4, Cufnaanta:1.3g/cm; cufnaanta muuqata: 0.25-0.7 g/cm3.

5, heerkulka midabka:190-200oC.

6, Heerkulka Kaarboonaynta:225-230oC.

7, kacsanaanta dusha sare:47-53 den/cn.

Tilmaamaha alaabta

Xaashida Taariikhda Farsamada:

Magaca mashruuca	Tilmaamayaasha (55AX Taxanaha)
Methoxyl	27.0-32.0
Heerkulka jelka	50-55
Miisaan la'aanta qallalan	≤5
Hadhaaga gubanaya	≤1
Bir culus	≤20
cusbo Arsenic	≤2
Ph.	5.0-8.0
Viscosity	Eeg kala soocidda viscosity

Tilmaamaha viscosity

Qaybta	Tilmaamid	Range
Mawjad hoose	50	40-60
	100	80-120
	400	350-450
Viscosity sare	1000	800-1200
	2000	1600-2400
	4000	3500-4500
viscosity sare oo dheeraad ah	30000	24000-36000
	50000	45000-55000
	75000	70000-80000
	100000	85000-105000