DC-A20 silicone Rubber is mainly used for making molds of concrete stone, GRC,rapid prototyping and tire molds; chocolate, candy and similar products’ molding.
DC-A20 is a kind of two part silicone rubber in addition cure or platinum cure type with mixing ratio of 1:1.It can cure at room temperature as well as under heat. It’s a kind of skin safe and food grade.And mainly used for mold making.
Characteristics
An exceptional fluidity and good operability, easy to demold
Aging resistance, high temperature resistance (220℃-300℃)
Environmentally, food-grade, FDA Certification.
Good tensile and tear strength
Outstanding bubble releasing
Very Low shrinkage
Non-deformation
Operation Instructions
Step 1: prepare the original molds
Prepare an perfect original mold and clean it totally before operation.
Notes: Make sure your original molds and operation tool were cleaned up totally to avoid uncured problem .
Step 2: Take 100 G part A and 100 G part B and mix them evenly.
Notes: Addition cure mold making silicon rubber is two parts flowing liquid, Pls follow the step strictly:
1.Weigh the two part exactly by electronic weight. If any part not in exactly weight, it may cause changing of hardness, or even cause uncured problem.
2.Mix part A and part B evenly. Otherwise the silicon rubber will be partly solidified and this will give birth to difficulties in your final operation. What’s more, the finished molds will meet a short life. All of these will cause a waste of silicone rubber.
Step 3: Pouring casting operation
Notes:1. we suggest use pouring operation way, which will be very easy to operate and demould. Pourable silicone require low viscosity which will be easy to flow smoothly and easy to de-air .
2.We suggest to set the silicone mold for another 12 hours after demould before you put it into a large production .
