RTV2 Liquid Silicone Rubber for Stamping Concrete Molds Making
1. Description of RTV2 Liquid Silicone Rubber for Stamping Concrete Molds Making
XB-625# addition cure molding silicone rubber safe silicone food grade silicone medical grade silicone silicone for chocolate molding is kind of addition cure high temperature resistance organic molding,it is liquid with moderate viscosity and can be poured and brushed,the mold made out of the silicone and curing agent,which with high temperature up to 250-300 degree celsius,has dimension stability,low linear shrinkage,it is a two component material with mixing ration of 1:1.
2. Characteristics of RTV2 Liquid Silicone Rubber for Stamping Concrete Molds Making Acceptable for food contact Outstanding release properties Low viscosity Easy mixing and degassing High flowability Odorless and Nontoxic Enhanced durability
3. Application of RTV2 Liquid Silicone Rubber for Stamping Concrete Molds Making
concrete/cement/stone moldmaking silicone
Sculpture moulds making Cake mold Chocolate moldmaking Candy moldmaking Baking moldmaking Ice trays molding Casting butters Casting for Kitchen products
4. Datesheet of RTV2 Liquid Silicone Rubber for Stamping Concrete Molds Making
Mixing Ratio (by weight)
Hardness (Shore A)
Working Time(at 23℃/75℉, MINS)
Curing Time(at 23℃/75℉, HRS)
Tensile strength, Mpa
Tear strength, KN/m
Elongation at break,%
5. Using instructions of RTV2 Liquid Silicone Rubber for Stamping Concrete Molds Making
Step 1: Prepare and clean the prototype. You must make sure your original molds perfect, fix the original mold on a board, then using some assistant material (like cardboard) to make a frame for to surround the prototype. The frame is no need, if we make the mold by brushing way.
Step 2: Take the silicone and catalyst as the ratio 1:1 by weight, mix the silicone rubber and catalyst evenly.
Notes: rtv silicone rubber is a kind of flowing liquid and it contains two parts. Part A is a kind of flowing liquid and part B is the curing agent. Remember to mix part A and part B evenly, otherwise the silicone rubber will be partly solidified and this will bring troubles for your final operation. What's more, the finishes molds will have a short life. All of these will cause a waste of silicone rubber.
Step 3: Vacuum pumping. After mixed the silicone evenly, it is better to release the bubble by vacuum pumping.
Step 4: Pouring cast or brushing cast. After released the bubble, we can pour/brush the silicone rubber on the prototype.
Notes: Please finishes all the steps within the operation time. If not, it will cause cross linking reaction, and no more further steps will be available. So, we have to pay attention to the pot life and curing time.
1.Why does the silicone mold appear to dry outside but wet inside? Some molding silicone rubber is a kind of condensation cure silicone rubber, which would get solidified after absorbing moisture.
While in order to provide a significant shelf-life for the silicon rubber, we will dry out the water in the silicon rubber.
So when the humidness is lower than 50%, this would happen.
Solution: Add 0.1% water into the silicon rubber and Stir over a low speed briefly when you use it.
2.Why the silicone mould cured incompletely?
a. Inexact mixing ratio, didn’ t weigh the part A and hardner according to the standard ;
b. The silicone and catalyst have not been mixed evenly and totally.
We should pay attention to avoid this kind of problem, otherwise there will be a waste of silicone mold.
R & D Capabilities
We have own lab with the experienced&professional R&D and production team as well as advanced devices. Here show only parts of the whole testing.
1.Pre-sale services: Sibetter can act as a good adviser and assistant of you; enable you to get rich and generous returns on your production. We would collect all the detailed information and offer the most suitable items for your needs and prepare the high-quality goods for you. 2. After-sale services: Provide considerate services to minimize your worries. (1) you would get the specific using instruction if you don’t know how to make the mould or products (2) If you met any problem, reply would be got in 24 hours (3) You are welcome any time to discuss the usage, the market, the raw materiasl with us about silicone rubber (4) If you were distributor, applications and the way to get the customers would be sent
Packaging & Shipping
Gernerally, Sibetter Silicone provide the silicone rubber with 20kg/25kg per pail.
If you need any further information about the liquid silicone rubber, pls feel free to contact Joanna: