Description
DC-A35 is a kind of 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-A35 silicone Rubber is mainly used for making molds of concrete stone,GRC,polyurethane products ; wax, candle decoration; rapid prototyping and tire molds; chocolate, candy and similar products’ molding.
Characteristics
＊An exceptional fluidity and good operability, easy to demold
＊Aging resistance, high temperature resistance (220℃-250℃)
＊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 (Or 100 G part A and 10 G part B if the mix ratio is 10:1) 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 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: Vacuum pumping
Without exception, this step takes less than 10 minutes. Otherwise, it will cause cross linking reaction, and no more further steps will be available.
Step 4: Pouring casting
1.pouring the mixed silicone rubber into the mold.
2.We suggest to set the silicone mold for another 12 hours after demould before you put it into a large production .
Warm Tips :
As addition cure silicone is a kind of platinum cure system, which will be easy to cause uncured problem ,so pls kindly follow the tips as below :
＊Do not mix with liquid condensation silicone rubber or even the tool which used for condensation silicone rubber.
＊Do not mix with organic matter which contains N, S, P organics and ionic compound like Sn, As,Hg, Ph. (Do not smoke when you use this addition silicone rubber)
＊Do not add any pigment or powder into the addition cure silicone rubber without any testing to prevent uncured problem.
Package
1. 1:1 mix ratio: 20KG/drum + 20KG/drum with vacuum packing ;
200KG/drum + 200KG/drum packing
2.10:1 mix ratio: 20KG/drum + 1KG/bottle with vacuum packing
200KG/drum + 20KG/drum with vacuum packing
Shelf life
Twelve(12) months when stored under dry and cool place by original package under 25℃
