DC-C25 Series silicone rubber is Mainly applied for making various molds,such as reproduction of poly resin, epoxy, polyurethane-polymer, plaster, gypsum casting and moulding, soaps, candle & lighting, architecture, decorative  arts and crafts, plastic toy, gift and stationery, big statue, cultural relic product, etc..

It has below features:
1. Resistance to deformation, high-temperature 220 degree centigrade

2. Acid, alkali and ageing-resistance

3. Low shrinkage< 0.2%

4. Good tensile strength  36±2 (kgf/cm)

5. High reproduction times

Technical Parameters

DC-C25 Silicone rubber is with good fluidity and moderate hardness which is suitable for middle size product with pattern by pouring operation, especially popular for manufacturer of resin crafts and gypsum decoration. It'S one of our best selling silicone. 

Model	Color	Mixing ratio (%)	Pot life (mins, under 25℃)	Curing time (hrs,under 25℃)	Hardness  ( Shore A )	Tensile- Strength  (MPa)	Tear- Strength (kN/m)	Viscosity (after A/B mixed,mPa.S)	Shrinkage Rate (%)	Elongation (%)
DC-C25	White	2-4	30-40	3-5	25±2	>4	>27	20000±3000	≤0.25%	>500%

Operation instructions

Step 1: prepare the original molds

MAke your original molds perfect. Fix it on a board. and fix the original mold on a board, then used four piece of board to enclose the original molds.

 

Step 2: Take 100 G parts A and add2G parts B and mix them evenly.

Notes: Mold MakingSilicon rubber is a kind of flowing liquid,it contains two parts. Part A is a kind of flowing white liquid and part B is the curing agent or catalyst.Pls follow the step strictly:

 1.Weigh the two part exactly by electronic weight. If not, for example add too much catalyst, the operation time will be too fast to operate,which will cause inconvenience to operate.

     THe operating and the curing time will be shorter if you add more catalyst in it. for example:

    Adding curing agent 1%,the silicone can still be operated within 2.5 hours and can be demoulded after 6-8hours.

    Adding curing agent 2%,the silicone can still be operated within 50-60 minutes and can be demoulded after 2-3hours.

    Adding curing agent 3%,the silicone can still be operated within 30-40 minutes and can be demoulded after 1.5-2hours.

    Adding curing agent 4%,the silicone can still be operated within 10-15 minutes and can be demoulded after 1.-1.5hours.

 

         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 silicon rubber.

 

Step 3: Vacuum pumping

without exception, this step takes less than 10 minutes. Otherwise, it will cause, and no more further steps will be available.

 

Step 4: PourIng casting or Brush operation

Notes:1. for simple pattern products 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.

        3.We sugges to set the silicone mold for another 12 hours after demould before you put it into a large production.

 

PAckage

25KG/Drum vacuum packing for part A +1kg/ bottle catalyst for part B

200KG/Drum packing for part A +1kg/ bottle catalyst for part B

 

SHelf life

Twelve(12) months when storedunder Dry and cool place by original package under25℃

 

MInimum order of quantity(MOQ)

200KG