WCC-570 Liquid Methyl
Tetrahydrophthalic Anhydride
(MeTHPA-Curing Agent for Epoxy Resin)
Features of WCC-570
liquid methyl tetrahydrophthalic
anhydride(C9H10O3) curing agent for epoxy
resin:
High purity,light colour:various desired
colour curing agent product for epoxy resin
can be propered directly or is formulated
using the anhydride.
Low viscosity : Good processability for
casting and potting.When casting,a large
amount of filler can be added to cured
compound,to properties is excellent.
Stable properties : Long pot life,low
solidification point,can be left at room
temperature for a long period of time.
Small volatility:Low toxicity,small heating
loss,as compared with amine hardeners,the
toxicity of WCC-570 is as low as 1/40 only.
It can obtain a superior quality of cured
compound.The cured article not only has
higher mechanical strength,but has better
properties of electric,heat resisting,and
anticorrosive as well.
WCC-570 has better
transparency,weatherability,and
potting-casting stability,especially is
suitable to be used for white
potting-casting compound,is an ideal
substitute curing agent for B-570(marketed
by Dainippon Ink and Chemicals,Inc.).
Please pay attention to this product should
avoid exposing to the sunlight,seal
tightly,keep at dry place during storage and
transport process.If take care of not
appropriate,in case of slight
precipitating,it can be used effectively
after only open is heated to about
140℃,without any effect on the original
properties.Fig.1 Relationship
between temperature
Fig.2 Relationship between temperature
and viscosity of WCC-570 liquid and viscosity of mixed compound for
acid anhydride.
E-39-D epoxy resin with WCC-570 liquid acid anhydride.
Weight
ratio
User may select the type and usage amount of
the epoxy resin , accelerator , filler ,
toughner , and active diluent etc.,
according to product properties and
processing request based on the fellowing
principle.User may obtain an ideal formula
by performing the sample test.
⑴Epoxy resin
This curing agent is suitable for all type
of the epoxy resin,proper compounding ratio
of the hardener with the epoxy resin turned
on the equilibrium calculation of epoxy
equivalent.
The usage amount of WCC-570 to tyoe E epoxy
resin is a range of 50-80
phr.(abbreviate:phr=parts per hundred rubber
or resin).
⑵Accelerator
Frequently-used accelerator has benzyl
dimethylamine , DMP-30 , triethanolamine ,
2-ethyl-4-methylimidazole,and benzyl
imidezole etc,Usage amount is 0.2-2 phr.
⑶Filler
It is silica,mica,alumina,calcium
carbonate,talc,aluminium powder etc.When
using , it must be dry,added emount may be
20 phr.
⑷Other auxiliary agent
It may added toughner and active diluent
etc,when specific requiring.
Recommended cure processing condition
100 parts of the type E epoxy resin and 70
parts of WCC-570 mixed with 0.2-0.5 parts of
the above-mentioned accelerator
proportionately.
So long as at 60-70℃ deaearating,then at
100℃ remained for 2h, also at 120-150℃
remained for 4-10h,it could be accomplished.
At latter stage,temperature and time depend
on the volume of the curing compound and
processing condition.
Type E epoxy resin also can be cured with
the WCC-570 at lower temperature. It may
completely be cured in the range from 100℃
until low to 70℃.So long as properly
changing kind and amount of accelerator,it
can get a satisfactory result.
The company warmly deal the water,the
land,the air freight for the Chinese and
foreign basinessmap get empty to check.
We welcome to consulting and cooperating
with us.
Technical indexes Table
3
|
Model |
WCC-570 |
|
Item |
|
Appearance |
Pale yellow
clear liquid,no impurity |
|
Colour(Fe-Co
method) |
≤200# |
|
Viscosity
25℃,mpa.s |
≤45 |
|
Density
20℃,g/cm3 |
1.21±0.05 |
|
Content of
acid anhydride % |
≥40.5 |
|
Acid value
mgKOH/g |
660-685 |
|
Solidifying point ℃ |
≤-15 |
|
|
