high quality rtv-2 mould making silicone rubber for concrete plaster decorative

RTV-2 mould making silicone rubber is generally named as two-part silicone rubber that vulcanizes at room temperature. the silicone rubber is high strength and ong life time for molds making. it is low viscosity which is good for pouring and brushing molds.

tin cure liquid silicone rubber C-820 for plaster gypsum mold

1.Suitable for both pouring molding and brushing molding
2.Strong tear strength and tensile strength
3.Excellent non-stick effect
4.Easily release air to avoid bubbles
5.Various hardness from 0 to 35 shore A
6.Excellent flexibility, easy to demould
7.High temperature resistance, high duplication times and repeated use
8.Good cut-growth resistance

blue silicone rubebr for resin craft mold

Technical Datasheet

Item			Parameter
C-820
Viscosity(cps)			16000±1000
Hardness(A°)			20±2
Tensile Strength(kgf/cm²)			36±2
Tear Strength(KN/M)			21±1
Elongation(%)			400±50
Shrinkage Rate(%)			0.03%
Mixing Ratio			100:2
Life Time(Min)			20~30
Curing Time (hr)			2~3
Temperature(℃)			25

Product Application

Making molds for

Artificial stoneproducts molding,Waxcasting

Lighting & candles crafts,stationery gifts,crafts industry

Making molds for gypsum,GRC,concrete,resin products etc

Casting for Statue,Buddha,Christmas ornaments,sculptures,figures etc

Unsaturated rein crafts,epoxy resin crafts, poly resin crafts,polyester resin

Decoration building mold making (cornice,column, balustrade, ceiling, pedestals,fountains, mantels, wall ornament, planter,furniture decorative etc.)

How to Use

Step One: Prepare and clean the prototype. You must make sure your original moulds perfect.

Step Two: Mixing part A and part B evenly. Take 100g of part A and add 2g of part B and mix the silicone rubber and curing agent evenly.

Step Three: Vacuum pumping. Without exception, this step takes less than 10 minutes. Otherwise, it will cause a cross-linking reaction, and no further steps will be available.

Step Four: Pouring cast or brushing cast. After released the bubble, we can pour/brush the silicone rubber on the prototype

Pouring cast:
It is suitable for simple products with a smooth surface. Without any mould lines, which helps you save time and is easy for operation. Evenly and slowly pouring the mixed silicone rubber into the square frame. After the cross-linking reaction and the silicone rubber turns dry, you can take the products out. Thus, the mould has been done.

Brushing cast:

Evenly brush the mixed silicone rubber on the product which is covered with mould spray with a brush or a brush pen.
After the cross-linking reaction (about 30 minutes), brush a second coat which can increase the tension and tear strength of the mould.
Cover a glass cloth on it after another 30 minutes of a second cross-linking reaction, and use a brush pen or a brush to avoid any interstices.
Cover a third coat.

Product Storage

1. It is a kind of non-dangerous goods. This product should be sealed and placed in a cool and dry place which should keep from sunlight and rain .

2. Especially note that the silicone should not touch or mix with compounds including nitrogen, phosphorus, sulfur, tin, lead or metal organic acid.

3. Addition cure Silicone RTV-2 is an environmentally-friendly liquid silicone product is not easy to burn which can be stored and transported as non-hazardous goods.

4. The shelf life is 12months from the date of production.

It can be reused after reinspection when it exceeds the storage period.