RTV silicone rubber for tire mold making

RTV silicone rubber for tire mold making typical application:
 
RTV silicone rubber for tire mold making is primarily intended for tires making , and can be used for poly resin crafts, PU crafts, PU resin crafts ,gypsum crafts ,unsaturated resin crafts, lighting and candles crafts ,plastic toy , stationery gifts crafts industry,a large statue Buddha, furniture, furniture decorative materials, statues  Buddha, artifacts copied, building decoration materials, large-scale cement mold, artificial fossils Factory, Europe component factory, simulation landscapes, animals and plants sculpture, sandstone crafts and so on. 
 
RTV silicone rubber for tire mold making description:
 
RTV silicone rubber for tire mold making is generally named as two-part addition silicone rubber that vulcanises at room temperature.Part A is a flowable liquid, part B is the curing agent(platinum catalyst). It features an exceptional fluidity ,good operability,excellent physical properties and very low shrinkage. The mixing ratio between Part A and Part B can be 10:1 or 1:1.
 
RTV silicone rubber for tire mold making feature: 
 
almost nil shrinkage
high chemical resistance to aggressive components of some types of resins
good tear strength (this feature ensures higher resistance to wearing and shearing) 
high degree of precision in reproduction 
high dimensional stability over time and  non-deformability 
high resistance to high temperatures and ageing (resit to -60-200°C)
excellent non-stick effect 
environmental, odorless and nontoxic
RTV silicone rubber for tire mold making picture show:
 
 
 
 
RTV silicone rubber for tire mold making datasheet:
 
Product
 E620
 
Appearance
  Translucent
 
Hardness(shore A)
 20±2
 
Mix ratio(A:B)
 1:1/10:1
 
Viscocity Part A(mPa.s)
 23000±2000
 
Viscocity Part B(mPa.s)
 3500±500
 
Tensile strength (kgf/cm2)
 45±5
 
Tear-strength  (kN/m)
 20±2
 
Elongation(%)
 500±50
 
Pot life/working time (mins)
 30-40
 
Curing time/setting time (hrs)
 3-4hrs(25°C)
110-20mins(60°C)
 
Shrinkage rate (%)
 0.1
 
 
RTV silicone rubber for tire mold making operation:
 
1. Pls clear the model and tool totally before operation to prevent cure inhibition.
2.Weigh the two part correctly by electronic weight in two separate container .
3. Mixing the two part in 1:1/10:1 and stir part A and part B evenly in 2-3 minutes .
4.And get the mixture for vacuum-pumping for de-air the bubble in around 2-3 minutes . (If there is no vacuum machine, pls pour the mixture carefully and slowly down the side of the mold frame so that less bubbles caused)
5. Enclose the product (the original model) with four plastic plates or wooden plates.
6. Clean your products and brush a layer of release agent(detergent or soap water)
 on your product.
7. Pour the vacuumed mixture into the model frame from the side of the mold frame.
 

 
RTV silicone rubber for tire mold making notice: 
 
As our silicone rubber for tire mold which is very easy to cause
cure inhibition , so pls do remember thoroughly clean the model and tool before
operation . Besides , pls avoid the liquid E-series silicone contact or mix with the
following material , otherwise the silicone won’t be cured :
1. Liquid condensation silicone ( condensation silicone not completely cured or organic tin compounds )
2 .Sulphur, sulfide and sulfur rubber materials.
3. Amine compounds as well as contains the amine materials.
4 .Pewter solder flux.
 
RTV silicone rubber for tire mold making shelf life: 
 
8-10 months when stored under 24°C in original unopened packages.
 
RTV silicone rubber for tire mold making package: 
 
If ratio is 1:1 :Packed in 20kg/pail + 20kg/pail and 200kg/pail + 200kg/pail.
If ratio is 10:1 :Packed in 20kg/pail + 2kg/pail and 200kg/pail + 20kg/pail.
 
 
Need any help on silicone rubber, please feel free to contact Ms Kitty:
 
Tel:86-755-89948294
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