Flexible Addition cured silicone rubber for casting artificial stone

Flexible Addition cured silicone rubber for casting artificial stone

RTV mold making addition silicone are generally named as two-part addition silicone rubber that vulcanises at room temperature.Part A is a flowable liquid, part B is the curing agent(platinum catalyst). It features an exceptional fluidity ,good operability,excellent physical properties and very low shrinkage. 

The mixing ratio between Part A and Part B can be 10:1 or 1:1.

 Typical Datasheet :

Advantages:

· almost nil shrinkage

· high chemical resistance to aggressive components of some types of resins

· good tear strength (this feature ensures higher resistance to wearing and shearing) 

· high degree of precision in reproduction 

· high dimensional stability over time and  non-deformability 

· high resistance to high temperatures and ageing (resit to -60-200°C)

· excellent non-stick effect 

· environmental, odorless and nontoxic

 Points of attention:

1,Prone to poisoning, can not mix with condensation, ionic compounds containing N, S-, P, organic matter and of Sn, As, Hg, Ph., easy molding plastic poisoning, resulting in the phenomenon of not curing.

2,Comparing with Condensation cure silicone, Addition cure silicone's adhesive properties to be worse.

3,Addition cure silicone affect by temperature greatly when cured under room temperature.

4,Addition cure silicone is easy to poisoning, please clean the tools which are used for condensation silicone rubber, so that it can avoid poisoning.

It’s fobidden to add the pigment or powder to addition cure silicone rubber arbitrarily,it’s easy to make the catalyst to be poisoning.

5,Addition cure silicone rubebr has two-component, the component A and component B, please pay attention to clean the component A containers before using for the component B, and vice versa

6,In order to avoid the hardness change, we should mix the component A and component B according to its mixing ratio strictly, no atter it’s 1 : 1 or 10 : 1.

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