YJS-620 Low shrinkage addition cure liquid silicone rubber for tire mold
Category: Tire Molding silicone  Publish Time: 2018-08-07 10:28 
YJS-620 is great for tire molding. They have excellent tension and tear strength and flexibility, especially almost zero shrinkage. This kind of silicone rubber always can help you make a perfect molds with high temperature resistance.
1.Features
1.Amazing fluidity and easy to operate
2.Platinum-based, food-grade silicone (environmental friendly, odorless and non-toxic)
3.Delicate design available
Mixing ration: 1:1, easy to mix
Easy de-molding
Excellent tension and tear strength
High performance in duplication
Shrinkage is almost zero (below 0.1)
Excellent resistance to weather, temperature, aging, acid and aging-proofing.
High resistance to high temperature and aging(resist -60℃ to 250℃)

2.Application:
YJS-620 is great for tire molding. They have excellent tension and tear strength and flexibility, especially almost zero shrinkage. This kind of silicone rubber always can help you make a perfect molds with high temperature resistance.

3.Technical Data 
Typical general characteristics
Inspection Method
Value
Product data (Catalyzed A+B)
YJS-620
Hardness
Shore A
20±2
Mix Ratio
A:B
1:1/10:1
Color
/
translucent
Pot life
25 °C (77F)
30-40
Curing time
25 °C (77F)
3-4
Mixed viscosity
mPa.s
5000±1000
Tear-strength
kg/cm
20±2
Tensile-strength
M.pa
4.0±1.0
Elongation
%
500±50
Shrinkage
%
0.1

 

4.Appearance
Part A: a non-toxic and odorless liquid with translucent color and platinum inside.
Part B: a non-toxic and odorless liquid with blue color.
ATT: We can do any curing time as your requirements.

5.Warm Tips:
The surfaces with which the material comes in contact must be perfectly clean, free of grease and dry.
Close the bottles after use so as not to confuse the cap of the catalyst with that of the base when re-sealing.
Be aware of possible cross-contamination; it’s highly recommended to use only dedicated gear when processing poly-addition RTV2 silicone rubber (including degassing devices).
Be aware that contact with certain material can inhibit the curing of the RTV2 poly-addition silicone rubber. Common contaminants to be avoided include:
-Natural or synthetic rubber, vulcanized with sulfur derivatives.
-Poly-condensation RTV catalyzed with metallic salts.
-PVC stabilizing agents.
-Amine cured epoxies.
-Sulfur, tin and amine derivatives.
-In case of doubt, carry out a small test by pouring the mixture onto a small area of the object. 
 
6.Package
Part A:1kg/drum; 20kg/drum;25kg/drum;200kg/drum.
Part B:1kg/drum; 20kg/drum;25kg/drum;200kg/drum.
 

 



  
 
QQ  Shirley Wu
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