Business Type: Manufacturer/Factory
Shenzhen, Guangdong, China
There are many different formulations of polyurethane rubbers for mould making. The polyurethane casting rubber can be pure or filled with special mineral charges. Are available different hardness from 55 Shore A and 70 Shore A.
Applications of Concrete Stamp Mold Making RTV Liquid Urethane Rubber :
Applications are the realization of models, the encompass of electrical circuits or capacitors.
The new formulation into the polyurethane rubber family products is a transparent bi-component pouring rubber for different applications such us the encompass of objects. The rubber is transparent like the glass with no yellowing tendency.
Features of Concrete Stamp Mold Making RTV Liquid Urethane Rubber :
Easy to use
Casting bicomponent rubber
No linear shrinkage
Excellent mechanical resistance
High tearing strength
Long life of the moulds
MEASURING & MIXING
Liquid urethanes are moisture sensitive and will absorb atmospheric moisture. Mixing tools and containers should be clean and made of metal, glass or plastic. Materials should be stored and used in a warm environment (73°F/23°C).
Shelf life of product is drastically reduced after opening. Immediately replacing the lids on both containers after dispensing product will prolong the shelf life of the unused product.
Pre Mix the Part B before using. After dispensing Part A and Part B into mixing container, mix thoroughly for at least 3 minutes making sure that you scrape the sides and bottom of the mixing container several times. If Mixing Large Quantities at one time, use a mechanical mixer for 3 minutes followed by careful hand mixing for one minute as directed above. Then, pour entire quantity into a new, clean mixing container and do it all over again. Although this product is formulated to minimize air bubbles in your the cured rubber, vacuum degassing will further reduce entrapped air. A pressure casting technique using a pressure chamber can yield totally bubble free molds.
POURING CURING & PERFORMANCE
For best results, pour your mixture in a single spot at the lowest point of the containment field. Let the rubber seek its level up and over the model. A uniform flow will help minimize entrapped air. The liquid rubber should level off at least 1/2" (1.3 cm) over the highest point of the model surface.
Allow rubber to cure overnight (at least 16 hours) at room temperature (23°C) before de-molding. Cure time can be reduced with mild heat. Do not cure rubber where temperature is less than 18°C.
Generally rubber cures at room temperature; it can also heat curing. Heat the rubber under temperature about 120°C, rubber can be cured within one hour.
Package of Concrete Stamp Molds Raw Material Liquid Urethane Rubber :
20kg and 200kg/drum
Lianhuan group Limitd main products include 36 series in hundreds of kinds of silicone products such as RTV-2 molding silicone rubber, silicone rubber for manual model design, shoe sole mold silicone rubber, silicon oil, pad printing silicone rubber, encapsulant and potting compound, silicone rubber for LED display, electronic thermolysis ointment, thermal conductivity silicone, special silicone rubber for CPU, silicone tube, silicone membrane, silicone sealant, liquid silicone rubber, addition cure RTV silicone rubber, HTV silicone rubber, solid silicone rubber, gross rubber, silicone rubber sheet, hot stamping silicone plates, liquid silicone, hot stamping silicone roller, etc. Our silicone rubber is with good new raw material and various specifications, which is featured with good performance and high reputation.
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