Description of silicone RTV-2 for brush molding

RTV2 Silicone Rubber is a kind of two-component material. The silicone rubber is made up of Part A base silicone and Part B curing agent. The Part A base silicone and Part B CA curing agent can cure at room temperature by a condensation reaction, after full cure, it become a cured silicone mold. The silicone mold can be cast the following materials for reproduction: plaster, polyurethane, PU, GRC, cement, resin, polyester, wax etc...

 

Characteristics of silicone RTV-2 for brush molding
     

 

1. Good flow ability and long working time

 

2. Medium hardness

 

3. High tear and tensile strength

 

4. Easy de-mould from complex replica parts

 

5. Acid and alkali-resistance

 

6. Low linear shrinkage

Technical parameter of silicone RTV-2 for brush molding

	Characteristics before curing						Curing
	Part A	Part B		Part A+ Part B			Pot life at 250C	De-molding Time
P Item NO.
	Appearance			Ratio	Viscosity (after mixed)		mins	at 250C
					cps
B225	Liquid white	Liquid clear		100:02:00	30000-32000		30-40	4-6 H
B230	Liquid white	Liquid clear		100:02:00			30-40	4-6 H
					31000-32000
	Characteristics after curing 24 hours
	Hardness		Tear strength	Tensile Strength(Mpa)		Elongation break (%)	Linear Shrinkage
	Shore A		(N/mm)
B225	18-20		28	≥3.8		550	0.30%
B230	23-25		32			500	0.30%
				≥3.8

 Applications of silicone RTV-2 for brush molding
       

 

RTV2 Silicone rubber series are suited for reproduction of cement molding, concrete stones, artificial stones, plaster molding, figures, art objects, decoration molding, GRC products, gypsum products, resin products, PU molds. Etc.

 

RTV-920 silicone rubber is a kind of silicone which is especially suitable for the reproduction of artificial stone,cement stone,concrete stone and manufactured stone moldmaking.

   

 

 Storage of silicone RTV-2 for brush molding          

 

When the RTV2 Silicone Rubber is stored at or below 30 C (85F) in the original unopened containers, Silicone Base and CA30 Curing agent have a usable life of 12 months from the date of production.