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Methyl Cellulose (MC)
ln the formula, n stands
for agglutination degree, R stands for-H or-CH3
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II.Specifications
|
Item |
İndex (55TY) |
|
Methoxyl (%) |
28.0-32.0 |
|
Moisture (%) |
<5 |
|
Viscosity (%2,20
C) |
5-100000
Viskozite Özelliklerine Bakın |
|
Ash (%) |
<1 |
|
Gelling
temperature C |
52-67 |
Note.”55TY” denotes
Tyrocell brand MC, among which 55 refers to gelling temperature, TY is
the acronym of Tyrocell, the number at rear donetes viscotes viscosity over
1000mpa.s is marked M, for instance, 55TY4ms denotes viscosity is 4000mpa.s
and MC has been treated on surface. |
|
Model |
Specifications |
Range mpa.s |
|
Specially low
Viscosity |
5 |
3-7 |
|
10 |
8-12 |
|
15 |
13-18 |
|
Low Viscosity |
25 |
20-30 |
|
50 |
40-60 |
|
100 |
80-120 |
|
High
Viscosity |
400 |
350-500 |
|
1000 |
800-1200 |
|
1500 |
1200-1800 |
|
2000 |
1600-2400 |
|
4000 |
3500-5600 |
|
6000 |
5000-9000 |
|
10000 |
8000-12000 |
|
15000 |
13000-165000 |
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Specially
high Viscosity |
20000 |
17000-22000 |
|
25000 |
22000-32800 |
|
40000 |
37000-42000 |
|
50000 |
2900-3900 |
|
60000 |
3100-4090 * |
|
100000 |
Over 4100 * |
20 °C deki %1 su solüsyonunun
viskozitesidir.
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III.Property
Tyrocell is a kind of non-ion aqueous cellulous ether, white or white-similar
powder or granule, no odor or taste, nontoxic, with a little hygroscopicity.Different
substitution offers different solubility, usually medium substitution (DS
between 1.5-2.0) comes under cool aqueous model, and finds widest
applications.lt dissolves in cool water and some orgnic solvets, does not
dissolve in hot water.ln hot water at 80-90°C it dissolves and swells, after
cooled down, dissolving quick.lts solution posseses reversible hot gelling
characteristic, stable to acid and alkali, is not effected between PH2-12,
with excellent anti-mildew ağabeylity, capable of dispersing, emulsifying,
agglomerating, thickening, holding water, forming film etc.Film formed by it
offers superior toughness, flexibility, transparency and oil resistance.
Density:1.39g/cm Apparent desisty:0.25-0.7g/cm Carbonization temperature:225-230°C
Color-change temperature:190-200°C Surface tension (25°C):47-53dyn/cm
IV.Usage
The product is used as agents of thickening, coherence, water-holding, film-forming,
shaping, dispersing, retard etc.in building construction, building
construction, building material, coating, cermics, textile printing& dyeing,
leather, tobacco,ink, paper making, petrochemical, daily-use chemical etc.For
example, putting Tyrocell in cement slurry may decrease water loss on the surface,
even if used in dry wall it also can prevent wall crakking, improve its
coherence and workability; used in cement produc, Tyrocell makes it firm and hard
but not shring too much; used in emulsion or aqueous resin coating, Tyrocell gives
coating a good wearability, fluidity, uniformity, stability for storage and
endurance to heavy metal pigment dissolving.ln pharmaceutical and food
industries MS is used as agent of coherence, film-forming, emulsification
and suspension etc.
V.Method for Use
1.Use after fast dissolving
While kept stirring, Tyrocell may disperse, swell, dissolve until transparency.The
following method may reach dissolving:
(1) Heat the required water to 80-90°C, put in Tyrocell slowly while stirring,
when slurry is formed and cooled, continue to stir, it will dissolve fully.
(2) Heat half the water to 80-90°C, put it in while stirring until it
becemes slurry, then add the residual cool water and stir it until
transparency.
2.Prepare Gruel-like Mother liquor for Use
First prepare Tyrocell into hing thic gruel-like mother liquor (the same method as
above), when used, supplement adequate cool water and continuously stir
until transparency
3.Dry-Blending
Tyrocell owns excellent compatibility, so it can be eaisly mixed dry with cement,
plaster powder, pigment etc.a good effect can be abtained.Especially, it has
good mixingability with water-soluble substance such as washing powder,
starch etc.so it can be directly be mixed
VI.Packing and Storage
20kg or 15kg net weight in plastic-coated or paper-plastic compound bag
lined with PH bag inside.On storage avoid sunshine and rain, prevent fire
and wet.
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