Manual MoldMaking Design Silicone

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SILASTIC -MC RTV 328 RTV338 Manual mold making silicone DESCRIPTION SILASTIC RTV328 moldmaking rubber is a two-componet material,consisting of Part A base silicone and Part B CA30 curing agent,cures at room temperature by a condensation reaction. These materials can be cast into the cured silicone mold:plaster,polyurethane,PU,GRC,cement,resin,polyester,wax etc.. Advantages 1. Good for small quantity products duplication 2. Low viscosity,good tear& tensile strength 3. Best choice for manual mold making Applications RTV manual mold making silicone is suitable for manual mold design,Low melting point ally molds,plastic toys,electronics,stationery,large-scale sculpture,PVC plastic molds, electronic equipment ,etc. Data of RTV Silicone Rubber for Manual Mold Making Model Color Viscosity (±2000) Mm2/s Hardness (Mpa) Tensile Strength (Mpa) Tear Strength (KN/mm) Elongation (%) Mixing ratio (%) Pot life (Min) Demould time (H) MC328 Off white 28000 28±1 2.8 3.0 250 100:2 by weigh 30 6 MC338 Off white 35000 38±1 2.6 3.2 200 100:2 30 6 Note: The technical datasheet just for reference, the hardness,color of the silicone can be adjust according your requirement How to make the silicone mold? 1. Preparing The surface of the original should be clean and free of loose material.If your products with thin flower patterns ,and especially with porous substrates,pls use a suitable mold release agent such as soap water,detergent,waseline or petroleum jelly. 2. Mixing Please weight 100 Part A base and 2 parts of CA30 Curing Agent in a clean container.Thoroughly stir Part A base silicone before use, as filler separation may accour upon prolonged storage. Mixing Part A and Part B evenly until the CA30 completely dispersed in the base. Hand or mechanical mixing can be used,but do not for an extended period of time or allow the temperature to exceed 35C(95F). Mix suitably small quantities to ensure thorough mixing of base and curing agent. It is strongly recommended that entrapped air be removed in a vacuum chamber,allowing the mix to completely expand and then collapse. After a further 1—2 mins under vacuum,the mix should be inspected and can be used if free of air bubbles. Volume increases of 3—5 times will accour on vacuum de-airing the mixture. So a suitably large container should be chosen. 3. Pouring the mixture and curing Pour the misxed Part A base silicone and CA-30 curing agent as soon as possible onto the original,avoiding air entrapment.The catalyzed material will cure to a flexible rubber within 6 hours(or faster by different mixing ratio or room temperature),we advice you de-mold after 24 hours ,it is will improve the replicate times of silicone mold. STORAGE When stored at or below 30 C(85F) in the original unopened containers,SILASTIC RTV328 ,RTV338 Base and CA30 Curing agent have a usable life of 9 months.from the date of production. Note: SILASTIC RTV328/RTV338 is an industrial product and must not be used in food molding,dental human skin molding applications. Packing Part A base silicone :20kg/drum,25kg/drum or 200kg/drum Part B CA30 Curing Agent:0.25kg/bottle,1kg/bottle and 10kg/bottle The information above is just for reference, if you're interested or have any questions, please feel free to contact Nicole: Web:www(dot)mcsilicone(dot)com E-mail:nicole(at)mcsilicone(dot)com Skype:nicoleszmc MSN: nicoleszmc (at)hotmail(dot)com

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Mingcheng Group Limited

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