acid and alkali molding silicone rubber for Concrete casting

acid and alkali molding silicone rubber for Concrete casting  
Description of HY- E642# Addition Molding Silicone
HY- E642# addition molding silicone is generally named two-components silicone rubber, Part A is a flowable liquid, part B is the curing agent. It features an exceptional fluidity and good operability. The mixing ratio is 1:1,mainly be suitable for making FDA molds application.

Applications ofHY- E642# Addition Molding Silicone
HY- E642# addition molding silicone could be mainly used for making concrete stones, precision molds, PU molds, prototyping, for life casting, fabric finishing, seal for electronic components and solar circuit board, trademark decoration. etc.

Technique Data of HY-E642# addition molding silicone
Model HY-E642#

Appearance Translucent
Mixing Ratio 1:1
Operating time (Mins 25°C) 30 - 50
Curing time (Mins 25°C) 120 - 240
Curing time (Mins 60°C) 4-5h
Hardness (A°) 42±2
Density ( g/cm 3 ) 1.08
Viscosity (CS) (Part A) 30000 ± 5000
Viscosity (CS) (Part B) 5000 ± 500
Viscosity (CS) (After mixed) 10000 ± 2000
Tensile-strength( kgf /cm2 ) 100 ± 20
Tear-strength (kgf /cm2 ) 15 ± 2
Elongation-break(%) 350 ± 50
Retractility(%) ≤0.1

OPERRATING INSTRUCTION of HY-E642# addition molding silicone:
1. Stir part A and part B with right mixing ratio evenly. And get the mixture for vacuum-pumping. (If there is no vacuumizer, you can just pour the mixture slowly from the corner so that less bubbles caused)

2. Enclose the product (the original model) with four plastic plates or wooden plates.
3. Clean your products and brush a layer of release agent(detergent or soap water) on your product.

4. Pour the mixture with correct mixing ratio into the model frame.
After about 2-4 hours, when the silicone cured, get out the original model, and there you get a finished addition cured silicone mold .

SHELF LIFE: Twelve (12) months from date of shipment when stored at 24°C in original unopened packages.

PACKAGE: Packed in clean 20kg/pail, 200kg/pail.

Further information of HY- E642# Addition Molding Silicone , please feel free to Contact Ms. Kelly

Tel: 0086-755-89948013

Cell: 0086-15889446131 

email:hyjm(at)szrl(dot)net

skype:kelly619106

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