mold making silicone rubber for GFRC Columns

USages of mold making silicone rubber for GFRC Columns

mold making rubber is primarily intended for molds used to reproduce art objects, novelties and furniture components in urethane and
other plastics.

FEATURES of mold making silicone rubber for GFRC Columns

 Good cut-growth resistance
High durometer hardness
Low shrinkage
Easy release
Room temperature cure within 24 hours
Heat-accelerable cure 

BENEFITS of mold making silicone rubber for GFRC Columns

  Long mold life
 Highly detailed reproductions
 Simplified handling

TDS of mold making silicone rubber for GFRC Columns

 Model:638#

Appearance:white/red

Viscosity(cs):15000-17000

Hardness(A):33

Tensile strength(kgf/cm)≥35-36

Elongation break(%):≥450

Retractility(%):≤0.3

Curing agent mixed rate(%):2-3

Operate time(min):30

Curing time(hours):2-4

Mixing proportion of curing agent:4%

 
TECHNICAL GUIDELINES OF mold making silicone rubber for GFRC Columns

1.      Stir the base (Part A) well beofre use (except when depending on machine ).

2.      Shake the catalyst container (Part B) well before use. 

3.      This is a 100 Part A to 4 Part B mixing ratio by weight.Weigh the desire amount of base into a clean mixing container.

4.      Weight the proper amount of catalyst into the container. Mix the base and catalyst together by stirring with a stick until a uniform color is obtained. Scrape the container walls and bottom well to insure a thorough mix. 

5.      Though it is often unnecessary to deair the material due to its low viscosity some may choose to do so. If so,place the container into a vacuum chamber and evacuate the entrapped air from the mixture using a vacuum pump capable of achieving 29 inches of mercury vacuum.The mixture will rise, crest and then collapse in the contanier. Interruption(bumping) of the vacuum may be necessary to prevent overflowing the container. Keep the mixture under full vacuum for 2-3 minutes. 

6.      Bleed air slowly into the vacuum chamber. When the chamber is at atmospheric equiplibrium,remove the cover plate and take out the container. 

7.      Pour the deaired material slowly in a steady stream from one end of the mould so that the material flows evenly over the pattern. This should minimize emtrapment of air bubbles under the flowing material. A”ready”mold may be poured firstly over the pattern, which will also help reduce the possibility of entrapping air on the pattern and in the cured rubber.A mold release agent may be applied on the pattern first to improve release. 

SHELF LIFE OF mold making silicone rubber for GFRC Columns

Twelve(12) months from date of shipment when stored at 25⁰C in the original  sealed packages.

PACKAGE:

Packed in clean 25kg/pail, 200kg/pail.

Any question about silicon rubber, Pls feel free to contact Christy

TEL: 086-755-89948006

FAX: 086-755-89948030

Mobile: 86-189 3886 7547

Skype: christyxu911

Email: hyxj(at)szrl(dot)net