China RTV Silicone Rubber for Concrete Molds Making Silicone Moulds

RTV silicone rubber for concrete molds making silicone moulds
RTV-2 silicone : Silicon rubber for small size of PU/poly resin, unsaturated resin, plaster, candles and gypsums crafts, toys, soap, statuary ,casting molds making,etc.

USERS INSTRUCTION

RTV TWO molding silicone rubber (silicon) and silicon are generally named as two-part room temperature sulfurated silicone rubber, which features an exceptional fluidity and good operability.When mixed with 3% to 5% curing agent, they can still be operated within 30 minutes,but will be formed after 2-3 hours.With resistance to deformation, high temperature, acid and alkali, and expansion, silicon flexible molds are used for mold duplication and delicate mold making for poli crafts, resin crafts lighting and candle crafts.

silicone rubber mouldings for gypsum decoratives
This product is a white or red flowable liquid with a hardness of 22 to 50A° when cured. If large products and therefore multiple-piece molds are needed by customers, silicone rubber with higher hardness will be required for the molds. Conversely, soft silicon is indispensable for molds with complicated pattern and delicate details. The amount of curing agent admixture depends on the actual need of customers. More will be added for speedy drying and fast release and less when otherwise.
(Note we do not recommend silicon oil. For special soft mold or molds with complex pattern or fine details, 5% to 10% silicon oil can be added to condition the flexibility of the mold for convenience of release)

Datasheet:

Product
E-635
Appearance
Translucent
Hardness(shore A)
35±2
Mix ratio(A:B)
1:1
Viscocity (mPa.s)
12000±2000
Tensile strength (kgf/cm2)
50±5
Tear-strength (kN/m)
18±2
Elongation(%)
450±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%

Operation instruction of E-635platinum cure silicone rubber :
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 .

Call Us Anytime With Questions about Your Application.
More information , pls feel free to contact Ms Hebbe:
Tel: (00) 86-755-89948006
Mobile :86-18938861889