Platinum cure silicone rubber rtv2 for artificial stone molds
YJS-640 platinum cure silicone 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 and mainly used for mold making.
YJS-640 silicone rubber is mainly used for making molds of Jewellery, tire, concrete stone, GRC,
polyurethane products; wax, candle decoration; rapid prototyping and tire molds; chocolate, candy and similar products.
Hardness Shore A 40±2
Mix Ratio A:B 1:1/10:1
Color / translucent
Pot life 25 °C (77F) 30-40mins
Curing time 25 °C (77F) 3-4 hours
Mixed viscosity mPa.s 9000±1000
Tear-strength kg/cm 12±2
Tensile-strength M.pa 6.0±1.0
Elongation % 450±50
Shrinkage % ≤0.1%
*An exceptional fluidity and good operability, easy to demold
*Good tensile and tear strength
*Outstanding bubble releasing
*Aging resistance ,high temperature resistance (200℃)
1.As addition cure silicone is a kind of platinum cure system ,which will be easy to cause uncured problem ,so kindly follow the tips below :
2.Do not mix with liquid condensation silicone rubber or even the tool which used for condensation silicone;
3.Do not mix with organic matter which contains N, S, P organics and ionic compound like Sn, As,Hg, Ph;
4.Do not add any pigment or powder into the addition cure silicone rubber without any testing to prevent uncured problem.
When stored at or below 32°C (89.6°F) in the original unopened containers, G-8 series Silicone have a usable life of 12 months.