DC-A40 is two part silicone rubber in addition cure or platinum cure type with mixing ratio of 1:1 or 10:1.It can cure at room temperature as well as under heat. It’s a kind of food grade silicone which has got the United States FDA certification. And mainly used for mold making.
Application
DC-A40 silicone Rubber is mainly used for making molds of concrete stone,GRC,polyurethane products ; wax, candle decoration; jewelry;rapid prototyping and tire molds; chocolate, candy and similar products’ molding.
Technical Parameters
|
Model
|
Color
|
Mixing ratio (%)
|
Pot life (mins,
under 25℃)
|
Curing time
|
Hardness ( Shore A )
|
Tensile-
strength (MPa)
|
Tear-
strength (kN/m)
|
Viscosity
（After A/B mixed ,mPa.s）
|
Shrinkage
rate (%)
|
Elongation
（%）
|
|
DC-A40
|
Translucent
|
1:1
|
20-40
|
(3-5hrs under 25℃);
(20-30 mins under 60℃)
|
40±2
|
>7
|
>14
|
6000±2000
|
<0.1%
|
> 450%
|
Characteristics:
1.good fluidity and operability, easy to demold
2.Aging resistance, high temperature resistance (220℃-250℃)
3.Environmentally, food-grade, FDA Certification
4.Good tensile and tear strength
5.Very Low shrinkage
6.Non-deformation
