RTV Condensation Cured Silicone Rubber

Product Specifications

Prod Model:	CSN-85**
Markets:	North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe
Viscosity(Cps, 25 Centigrade):	20000±5000
Hardener Dosage(%) Or Weight Ratio (a:B):	2±0.5%
Pot Life(Min):	10-60
Demolding Time(H):	3-4
Material:	Silicone Rubber
Appearance:	Milky White

Product Description

Condensation Cure Silicone Rubber

Application:

Condensation cure silicone rubber is based on tin catalyst. Its production process has small molecule as by-products, so shrinkage will be a little larger. It can be greatly used in making artificial stone, art candle, bronze, cement, gypsum, shoes, low melting point and other molds. Especially when using for making resin mold, condensation cure rubber is great.

Advantages:

1, Good fluidity which ensures a good processing when filling a mould by gravity.

2. Excellent mechanical properties, in particular tear strength.

3, Excellent flexibility and its low modulus facilitate the mould release.

4, Range of catalysts allows to fulfil the requirements for various curing and working time.

Instruction And Professional Guidance

1, About choosing hardness

First, if size of your stone is very large, you need to choose a little higher hardness, such as 40, 45, 50, 50. In the contract, if size is small, just need to choose soft silicone rubber.

Second, if details of your stone are complicated, we need to choose soft hardness for you, as rubber can tightly fit every small corner of the master mold. In the contract, if details are easy, 30, 35 hardness is better.

Here is the different hardness:

2, About viscosity

Generally speaking, it depends on whether you have a vacuum chamber.

(1)If you do not have a vacuum chamber, we need to choose low viscosity for you, for

Bubbles can easily release, therefore will not influence the property, what's more, not

Destroy the design.

(2)If you have a vacuum chamber, viscosity is not a problem.

3, About Color

(1) We can produce the simple pure color, such as red, blue, green, yellow and so on.

(2) We can also produce your needing complicated color, such as silver, gold color, but need your palette.

Using Guidance.

(1) Take out a certain amount of liquid silicone base (part A)from the container;

(2). Take out a certain amount of liquid silicone base (part B) from the container and mix with part A.

(3). The two components of silicone rubber must be mixed homogeneously, otherwise, it will be partly cured and solidified;

(4). Deaerate in a vacuum cupboard to achieve bubble free vulcanization;

Note: If no vacuum de-airing equipment is available, air entrapment can be minimized by mixing a small quantity of A and B component, then using a brush, painting the original with a 1-2mm layer. Leave at room temperature until the surface is bubble free and the layer has begun to cure. Mix a further quantity of base and curing agent and proceed as follows to produce a final mold.

(5). Pouring the deaerated mixture over the highest point of the model to form casting mould;

(6). Demolding after the liquid silicone solidified thoroughly.

(7). The mixed liquid silicone rubber will solidified in 3-4 hours under room temperature.

Sample

1kg sample is free of charge from our side.

Promise of quality

If sample pass your test, we promise that quality of goods will be 95% the same as sample.