liquid addition cure silicone rubber for polyurethane mold

Specifications of  liquid addition cure silicone rubber for polyurethane mold :

high transparency, tensile strength, and tear strength,Nontoxic & reach to Food grade,etc.

Key words: 

addition cure silicone rubber,addition cure silicone, food grade silicone addition, liquid rtv-2 silicone rubber, liquid addition silicone rubber

1.Application of liquid addition cure silicone rubber for polyurethane mold :

Addition cure silicone rubber is mainly used for rapid prototyping and modelling, polyurethane moldings, resin kits mold making, liquid injection silicone mold making, metallic arts & crafts, baby nipples, cakes, candy food grade products mould making, life casting, medical catheter and so on. 

2.Features of liquid addition cure silicone rubber for polyurethane mold :

 a) Two-component silicone rubber with platinum catalyst.

 b) With high transparency, tensile strength, and tear strength.

 c) Nontoxic & reach to Food grade.

 d) With good heat stability and weatherability  ( temperatureresistant range of -60---250 C).

 e) With heat-ageing resistance

 f) Low shrinkage, below 0.1%

 g) Curing speed can be accelerated using heat

 h)Platinum catalyst can be poisoned (*see note below)            

Model of addition cure silicone rubber:

3.   liquid addition cure silicone rubber for polyurethane mold   with FOQ:

4. Several points you need to pay attention to while using additon cure silicone rubber:

*The platinum catalyst used in all addition cures is susceptible to attack from certain chemical compounds which in turn will lead to inhibition of cure and results in a partially cured product.  Bringing the uncured material into contact with the following chemical compounds should be avoided during the manufacturing process: nitrogen, sulphur, phosphorus, arsenic, organotin catalysts, PVC stabilizers, epoxy resin catalysts, sulphur vulcanised rubbers and condensation cure silicone rubbers.

Catalyst

As already explained, addition cure rubbers use a platinum catalyst and the A and B parts are manufactured together as a balanced kit.  For this reason only use the A and B parts from the same kit and always weigh out and mix to the correct ratio. 

The catalyst can be contained in either the A or B part of the system, as this may vary from supplier to supplier, 

it is important to check first if using a new material with automated dispensing equipment.  

We strongly advise purging and cleaning equipment before changing to a new material to avoid cure taking place in the pump and pipe work.