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Friday, August 9, 2013

Various of silicone rubber

  Various existing silicone rubber at the mall for we can use as a molding

 

CS2 Condensation cure Silicone rubber

We are pleased to announce that our Condensation Silicone Rubber now uses an improved formulation for better tear strength, improved durability and variable cure times through different catalyst ratios (see below and datasheet for new details on catalyst ratio).
Easy Composites' Condensation Cure Silicone Rubber is a low viscosity, two-part condensation cure silicone rubber. It is used for mould making where it is mixed (with its catalyst) and then poured around a pattern to create a flexible silicone mould.
Easy Composites' Condensation Cure Silicone Rubber has been specially selected for its ease of use, excellent performance and great value.
Once cured the silicone rubber is very soft and flexible making it perfect for casting complicated or intricate shapes where the cast part can be easily removed from the silicone mould. The long pot-life of our silicone allows plenty of time for careful pouring and self de-gassing although forced degassing in a vacuum chamber can also be performed if required.

Features

  • Easy to use – no special equipment or conditions required
  • High tear strength and excellent elongation (making removal of even complex shapes from the mould easy)
  • Good chemical resistance to styrene and polyurethane
  • Low viscosity – fantastic flow properties
  • Great value!




flexible rubber
This silicone rubber is self-thickening and can be applied with a brush or spatula to vertical surfaces without sagging. It cures with insignificant shrinkage to a soft, flexible rubber. It does not stick to most surfaces, minimizing surface prep time, and features an easy part 1A:1B by weight or volume mix ratio. Four thin layers are all that is required to make a stretchy, strong and durable production mold for casting wax, gypsum, concrete or resins like urethane or polyester.



Polycraft GP-3481-F General Purpose




High Strength silicone mould making rubber. Our Silicone has been formulated for easy mixing by hand, with colour coded components giving a visual aid to ensure mixing is adequate. The two components mix easily and because of the low viscosity most grades can be used without processing in a vacuum chamber. This silicone is suited for the detailed reproduction of figures, art objects and similar items.
Features :
Outstanding release properties
High Flowabilty and long woring time
Medium Hardness
High tear resistance
High elasticity for easy removal of complex replica parts
Can be made thixotropic (non flowable) for vertical surface replication (Silicone Thixo Required)





Silicone mold making materials are used extensively to create molds that will produce excat replicas of life castings and other objects used in  special effects, taxidermy, and craft making. Unlike some silicone's IES25 is not inhibited. by latex or sulfur based products like oil based clay. Our silicone mold making compounds consist of two components. A liquid base and a catalyst or curing compound. All products are sold by weight.

Some of the materials you can cast into a silicone mold are:
  • Urethane Plastic
  • Urethane Rubber (sold in store)
  • Epoxy
  • Polyester
  • Fiberglass Resign
  • Plaster
  • Soap
  • Wax
  • Low melt metals (up to 400 degrees Max)
  • HydroCal White
  • UltraCal 30

Micro-max ten to one


Liquid Silicone Rubber for Making Molds

Our two-part liquid RTV (Room Temperature Vulcanizing...cures without heat) silicone mold rubber is ideal for making duplicate parts with our casting resins. To make a mold, mix parts A and B together and pour into a mold box containing your pattern. After curing, the mold is soft and pliable and reproduces every detail of your pattern. And, because it is genuine silicone rubber (withstands up to 600 degrees F), you can use these molds to cast small metal parts with our low-temperature alloys. Instructions for making molds are included.

TEN-to-ONE / HIGH TEAR STRENGTH mold rubber is a special formula that is recommended for long-life molds having thin sections or deep undercuts that put extraordinary stress on mold rubber when castings are removed. Mix 10 parts of A with 1 part of B by weight (we recommend the use of #83825 Digital Scale, sold separately) and pour into mold box. Includes 2 lbs. of part A and 0.2 pounds of part B. 45 minute pot life; 24 hour cure. 2.2 lb. kit contains approx. 28 fl. oz. total material.

Mold max silicone rubber
Mold Max® Silicones are tin-cured silicone rubber compounds that have exceptional working properties and library life. Mold Max® Silicones feature Smooth-On’s exclusive "Libra®" catalyst for long library life. Mold Max® silcones can be pigmented with Silc Pig® silicone colorants. Pot life for the pourable silicones is 45 minutes and they cure overnight at room temperature.
Mold Max® Silicones will reproduce the finest detail and are suitable for a variety of industrial and art related applications including making molds for reproducing prototypes, furniture, sculpture and architectural elements. Mold Max® 10, 20, 25 and 30 silicones can be thickened with THI-VEX® additive for brush-on applications.
Mold Max® Silicones can be used to cast a variety of materials including wax, gypsum, low melt alloys/metals and urethane, epoxy or polyester resins (without using a release agent).

Silastic 3110 Silicone rubber
Silastic 3110 RTV Silicone Rubber is Dow Corning’s lowest viscosity two-part silicone rubbers. It has a viscosity of 14,000 cps with a Shore A hardness of 45 and a tear strength of 15. It easily fills tiny crevices and indentations and is very easy to work with and pour. It offers a wide choice of handling and curing physical properties. No vacuum deairing is required. Silastic 3110 is ideal for capturing intricate details in art objects and simple shapes. There is no inhibition sensitivity to modeling clays and most adhesives, which could cause incomplete cure of mold. It does have moderate dimensional shrinkage. Curing times can be varied depending on the catalyst type and amount of catalyst used.


Silpak's R-1828 Silicone rubber
Silpak's R-1828 is a room temperature vulcanizing silicone primarily designed for brush on applications.  Excellent physical properties with high tear resistance.  Low viscosity for greater flow control produces molds with a long production life.  Build up molds with 2-4 coats until desired thickness is achieved (min. 3/8").  Suitable for use with polyurethane casting resins and foams, polyester resins, casting wax, gypsum, and concrete.  Overnight cure.  1:10 by weight mix ration.





Silastic T-4
Silastic T-4 is a two component material consisting of silastic t-4 base and mixed with silastic t-4 curing agent. Cures at room temperature by addition reaction. A range of materials can be cast into the cured silicone mould. polyurethane and other reactive resins are the materials typically used. Its a high strength mouldmaking rubber developed for prototype design and production tooling, especially for rapid prototyping
Outstanding release properties
Product cure can be heat accelerated
Translucent appearance allows split lines to be cut accurately in block moulds
very low shrinkage and good dimensional stability
High hardness, but flexible and very tough
can be used for high temperature casting applications






Aero marine 128T silicone rubber

AeroMarine Products AM128T translucent silicone RTV rubber in a one quart (2.2lbs) kit, including catalyst. You can see through the mold made with our translucent rubber so that you can cut a parting line. Since it is semi-transparent (frosted or cloudy colorless),  you can color it with the appropriate silicone based pigments.  It is very soft and stretchy, with a durometer of 28 Shore A.  AM128T's mix ratio is 10:1 by weight. This RTV silicone is used for making cast "block" or thinner "skin" molds.  It flows very nicely and picks up incredible detail.  You can mix in fumed silica (aka cabosil or aerosil) filler to make AeroMarine Products translucent silicone brushable.



AM 125 RTV Silicone

AeroMarine Products AM 125 RTV Silicone Mold Making rubber one gallon (13#) kit contains:
1 half gallon Part A 
and 
1 half gallon Part B
AM 125 RTV Silicone is a 1:1 mix. Most other silicone RTV mold making rubber products must be weighed.  This product is a simple one to one mix by volume.
You can use AM 125 silicone rubber to make molds for soap, candles, low-melt metals like tin and pewter, and plastics. The pot life is 15 minutes and it sets in 75 minutes. It pours very easily and picks up fine detail. No vacuum degassing equipment is needed.  This silicone rubber is self-releasing, so no mold release is required. However, using a silicone mold release will extend the life of the mold. It is always wise to conduct a small test to ensure the suitability of this product for your particular application.

3 comments:

  1. Really Good tips and advises you have just shared. Thank you so much for taking the time to share such a piece of nice information. Looking forward for more views and ideas, Keep up the good work! Polyurethane Casting Services

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