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Sibetter rtv2 liquid silicone rubber for GFRC / GRG / concrete mold making Russia market
1. Condensation Cure Liquid Silicone Raw Material for Cultured Stone Rubber Molds Making description
XB-725# is one of the best seller.
The XB-725# is a kind of liquid RTV tin cure mold making silicone rubber with two parts, part A is the silicone rubber base, part B is the condensation curing agent. XB-725 is in the harshness of 25 shore A, then the application of XB-725# would be used to make mould of the products in medium size such as 40~50cm, such as the concrete/cement products, artificial stone, small plaster decorations, bronze statues, etc.
Its mixing ratio is 100:3, and generally 3% free catalyst would be offered. But in the same mixing ratio, the higher the temperature is, the faster the silicone rubber would be cured. So, please add the catalyst accordingly.


2. Condensation Cure Liquid Silicone Raw Material for Cultured Stone Rubber Molds Making Applications
A. Resin crafts, poly resin crafts, PU crafts, PU resin crafts, unsaturated resin crafts;
B. Plaster, Gypsum, Cement, and Concrete decoration;
C. Lighting ornaments, candles crafts;
D. Plastic toy, stationery gifts crafts industry;
E. A large statue Buddha, relief, statues Buddha, artifacts copied;
F. Furniture, furniture decorative materials, building decoration materials;
G. Large-scale cement mold, artificial fossils Factory, Europe component factory;
H. Simulation landscapes;
I. Animals and plants sculpture;
J. Sandstone crafts;
K. Model design, product exploitation.
3. Condensation Cure Liquid Silicone Raw Material for Cultured Stone Rubber Molds Making Features
A. All hardness from 15 to 40 shore A;
B. Good fluidity, good operability, good for pouring method;
C. Excellent mechanical properties, in particular tear strength and tensile strength;
D. Excellent flexibility, easy to demould.
E. High temperature resistance, high duplication times and repeated use.
F. Wide range of catalysts/curing agent/hardener for various applications and various requirements on the operation time or curing time.
G. Good cut-growth resistance;
H. High durometer hardness;
I. Low shrinkage;
J. Easy release;
K. Room temperature cure within 24 hours or Heat-accelerable cure ;
L. Curing agent arrange together as free charged.
4. Condensation Cure Liquid Silicone Raw Material for Cultured Stone Rubber Molds Making Datasheet
Model NO· XB-725#
Mixing Ratio (by weight) 100:3
Appearance/Color Translucent/White
Hardness (Shore A) 25±2
Mixed viscosity(mPa·s) 16000±500
Working Time(at 23℃/75℉, MINS) 30~40
Curing Time(at 23℃/75℉, HRS) 3~5
Tensile strength, Mpa ≥4.2
Tear strength, KN/m ≥28.5
Shrinkage, % <0.2
Elongation at break,% ≥550
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.
SIBETTER SERVICE
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
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.

If you need any further information about the liquid silicone rubber, pls feel free to contact Vicky:
Web: www.sibetter.com
SKype: vicky(at)sibetter(dot)com
Whatsapp/ Wechat: +86-135 3863 9382
Tel: +86-0769-23077651
Fax: +86-0769-23077651
E-mail: vicky(at)sibetter(dot)com
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