resin product making and deplicating Application Silicone Rubber for resin mold making

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Product Overview



resin product making and deplicating Application Silicone Rubber for resin mold making

Company Information


Shenzhen Zhihua Chemical Co.,Ltd.(DC SILICONE) are praised as the leading professional manufacturer of Mould Making Silicone Rubber, Addition Silicone Rubber ,Life Casting Silicone Rubber, Electronic Potting Compound, Pad Printing Silicone Rubber, and so on. 


rtv2 mold making silicone rubber



Product Description

White Appearance and Adjustable Sample liquid silicone rubber

Product details

Product nameRTV-2 Liquid silicone rubber manufacturer for cement concrete molding
Applicationcement concrete molding
AppearanceLiquid Two Component
Hardness30 Shore A
FeaturesHigh Duplication Times
CertificateFood Grade
Mixing ratio100:2
Usagecement concrete molding
BrandDC silicone
Product Keywordsrtv2 mold making silicone rubber,rtv2 liquid silicone rubber for silicon,rtv-2 silicone rubber for pu resin concrete


The DC- C Series Condensation cure silicone rubber is used for making molds of concrete stone, GRC, gypsum decoration, plaster ornaments, fiberglass products, polyester decoration, unsaturated resin crafts, polyester resin crafts, polyurethane, bronze, wax, candle, and similar products.


C Series has different hardness from 0-55 shore A. small size product with detailed pattern we suggest your use low hardness such as 10-20A,for middle or large size product with pattern you can choose 25-35A, and for big size with little detail you can use 40-50 shore A hardness.


Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs.



Operation instructions


Step 1: prepare the original molds


Make your original molds perfect. fix it on a board. And fix the original mold on a board , then used four piece of board to enclose the original molds .


Step 2: Take 100 G parts A and add 2G parts B and mix them evenly.


*Notes: Mold making silicon rubber is a kind of flowing liquid ,it contains two parts. Part A is a kind of flowing white liquid and part B is the curing agent or catalyst .Pls follow the step strictly:


1.Weigh the two part exactly by electronic weight. If not, for example add too much catalyst , the operation time will be too fast to operate ,which will cause inconvenience to operate .


2.Mix part A and part B evenly. Otherwise the silicon rubber will be partly solidified and this will give birth to difficulties in your final operation. What’s more, the finished molds will meet a short life. All of these will cause a waste of silicon rubber.


Step 3: Vacuum pumping


Without exception, this step takes less than 10 minutes. Otherwise, it will cause cross linking reaction, and no more further steps will be available.


Step 4: Pouring casting or Brush operation


*Notes:1. For simple pattern products we suggest use pouring operation way, which will be very easy to operate and demould. Pourable silicone require low viscosity which will be easy to flow smoothly and easy to de-air .


2.For delicate pattern products we suggest use brushing operation way, which can copy the pattern exactly . Brushable silicone require high viscosity which won’t be easy to flow away and easy to brush .


3. We sugges to set the silicone mold for another 12 hours after demould before you put it into a large production .




25KG/drum vacuum packing for part A +1kg/ bottle catalyst for part B;9/18drums/pallet; 200KG/drum packing for part A +1kg/ bottle catalyst for part B; 1//2/4drums/pallet;


Shelf life


Twelve(12) months when stored under dry and cool place by original package under 25


Minimum order of quantity(MOQ)





rtv2 mold making silicone rubber


Strength proof

All our products are passed the inspection standards included  with 100% quality.



Why did the clients choose our DC Silicone: 

1.Free Sample   

2.Silicone Performance Test   

3.Technical Support   

4.More than 10 years experience of silicone rubber producing.   

5.Relatet products purching assistance  

6.China visiting reception   

7.Factory visiting Reception    

8.New market developing 

9.New products research and development  

10.Engineers Site Instruction


11.DC Silicone Quality Control with Strict Management

Why could the silicone mold be reused only for a few times?

Maybe you will confuse about this question for years. Here we share you some following reasons:


a. Adding too much silicone oil into silicone rubber. Silicone oil is an additive which will destroy the molecular weight of silicone rubber and reduce the tension and tear strength.


b. Adding too much catalyst into the silicone rubber when you make the molds. For the condensation cure(tin catalyst) silicone rubber. we suggest you add no more than 2% of catalyst. If you 1add too much catalyst, the operation time will be too fast to operate ,which will also reduce the tension and tear strength.


c. Using the silicon rubber with a high hardness to make molds for small sized products with delicate and intricate designs and the silicon rubber with a low hardness to makes molds for large sized products with simple designs. 

Why does the silicone mold get burnt out?

The silicone mold get burnt out because you have left out the important notes when using unsaturated resin materials to produce your products. The unsaturated resin produces great heat when added the curing agent. So you must demould the product within 3 minutes to avoid this problem.


Our DC silicone rubber has add a special material which can resistant high temperature to make the resin molds. Help our customer avoid this problem.  

Why does the silicone mould appear to be dry outside but wet inside?

Because molding silicone rubber is a kind of condensation silicone rubber, which get solidified after absorbing moisture from the air. In order to provide a significant shelf-life for the silicon rubber, we will dry out the water in the silicon rubber.


Solution: Add 0.05% water into the silicon rubber and Stir over a low speed briefly when you use it. 

Why is the tear strength of the silicone mold weak? 

There has three resons:


Firstly:In order to reduce the viscosity of silicone rubber and pursue a good quality, you may add a lot of silicone oil into the silicon rubber when making molds. In fact, it might have just the opposite effect. The tension and the tear strength will be reduced badly with the addition of silicon oil. And the silicon molds will be in a weak and flimsy manner.


Sencondly:you may add too much catalyst into the silicone rubber,we suggest customers add catalyst no more than 5%,2%will be perfect.


Thirdly:you may use the silicone mold too early after it finished.we suggest the customer begin using the molds after 24 hours. whatsmore,it will be better if you can make a outmold to protect the silicone mold.

Why is the silicon mold oily? 

The molding silicone rubber itself doesn’t contain any oil, so it won’t be oily. If the mold is oily, it may be because of two resons: add the compound silicone oil( the compound of silicon oil and white oil). The white oil is not silicon oil but a kind of petrochemicals.


2.Your supplier add to much silicone oil when they producing silicone rubber or reducing the hardness of silicone rubber. 

liquid silicon rubber (2)1 (3)_125 (341)_1115 (3)_

0.0359 s.