RTV2 Mould Making Liquid Silicone For Gypsum/Plaster, Cement/Concrete, Resin Castings

Liquid RTV2 silicone rubber is generally named as two-part room temperature vulcanized silicone rubber, which features an exceptional fluidity and good operability. When mixed with 2-3% curing agent, they can still be operated within 30 minutes, but will be formed after 4-6 hours. With resistance to deformation, high temperature, acid and alkali, and expansion. 

Physical Properties

Part A Silicone : MCSIL-2020 white

Part B Catalyst: MCSIL-CA30 clear

Viscosity: 20000±2000　cps

Mix ratio: 2%

Pot life: 30-40 mins

Curing time: 4-6 hrs

Hardness: 20 Shore A

Tensile strength: 3.8 Mpa

Elongation: 550%

Tear Strength: 28-30 N/mm

Shrinkage: 0.2%-0.4%

Product Features

1. Good flow ability and long working time

2. Medium hardness

3. High tear and tensile strength

4. Easy de-mould from complex replica parts

5. Acid and alkali-resistance

6. Low linear shrinkage

Applications

A: Cultural relic duplication, architectural decoration, statues 
B: Resin crafts 
C: Lighting ornaments, candles 
D: Plaster, Gypsum, Cement, Concrete decorations 
F: Model design, product exploitation, etc.

Using Instruction

1-Take 100g of part A and add 2g of part B and mix the silicone rubber and curing agent evenly.

2-vacuum pumping
Without exception, this step takes less than 10 minutes. Otherwise, it will cause , and no more further steps will be available

3-Pouring mold or block mold of silicone rubber
The pouring way is an easy way to make molds, it's slowly and evenly pour into the mixed silicon rubber into the square frame. After the cross linking reaction.

Packaging 

Part A base silicone: 5kg, 20kg/drum, 25kg/drum or 200kg/drum
Part B CA30 Curing Agent: 250g, 800g/bottle, 1kg/bottle

Storage & Shelf life

When the silicone rubber is stored at or below 30 centi degree in the original unopened containers, Silicone Base and Curing agent have a usable life of 10 months from the date of production. After 10 months stockpiles use the Stir to mix the Part A silicone for some minutes, then the silicone can be use again, no influence for other performance.