A thixotropic, two component, room temperature curing silicone adhesive offering faster cure (a tack free time of approximately six minutes), a cure through time of 30 minutes, and primerless adhesion to a wide variety of substrates.

• Fast cure time at room temperature; no heat required to cure
• Fast property build
• Fast cure through time (approximately 30 minutes)
• Easy to dispense; convenient 10:1 mix ratio
• Extended room temperature storage prior to mixing
• Excellent primerless adhesion to many substrates
• UL94/FDA Compliance pending
• Designed to offer high levels of productivity
• No cure inhibition concerns

The SnapSil* RTV230 Product contains a co-catalyst (accelerator) which allows for more uniform cure profile than traditional condensation cure materials. The curing of the bead is not as dependant on air moisture since the co-catalyst assists with the cure in the body of the bead.

• www.evroberts.com/SnapSil-RTV230_TDS.pdf
• www.evroberts.com/SnapSil_RTV230_Product_Information.pdf

The product is also unique in that it has very fast green strength build (the physical strength and properties of a dispensed material before it has reached full cure). Pairing the co-catalyst with the catalyst gives a "synergistic" effect which greatly increases the cure speed, leading to a fast property build.

This product can be customized. It can be customized to meet individual needs for colors or property enhancements.

About E.V. Roberts:

E.V. Roberts is a 65-year company continuing to invest in transformations needed to meet the increasingly demanding requirements of our primary markets; aerospace, electronics and specialty industrial applications. We are an atypically technical organization, employing and training highly skilled people to support a rigorous infrastructure. We excel in getting even the most complex orders right every time. We achieve our success, and success for our customers, through expertise in technical support, specifications, detailed documentation, custom storage, labeling, packaging and shipping. Our two full-time chemists are unrivaled in distribution. In addition to handling engineered materials from leading manufacturers such as Henkel/Loctite, GE, 3M, Huntsman (formerly Vantico), Resolution Performance Polymers (formerly Shell), we offer custom formulating and specialty packaging through Resin Formulators and Chemical Packaging Solutions.

For further information, please click on the links to the right or contact Scott Gius, Business Development Manager at sgius@evroberts.com

The initial part is coated in a silicone-based liquid rubber. Once the liquid hardens, the stereolithography part is removed, and the void left behind is injected with a urethane that matches the customers specifications. Using this process, up to several copies a day can be made of the initial prototype.

Frequently Asked Questions - What materials can ProtoCAM mold? We have a variety of urethanes at our facility that can be matched to duplicate the mechanical properties of any thermoplastic. - How large can a part be? Virtually any size. ProtoCAM has already successfully molded parts over three feet in size. - What colors can be created? ProtoCAM can exactly match any color using a swatch or paint identification number. The lead time for an exact color match is three weeks; however, ProtoCAM can approximate colors immediately. - Are urethanes paintable? Yes, ProtoCAM recommends painting the parts after over-curing the part in a specific color. This will yield a better quality part finish. - What type surface finish can a part have? The common finishes are gloss, textured and matte. What temperatures can urethanes withstand? There is no standard answer to this question. Each urethane has an individual heat deflection temperature, the maximum of which is 225°F. ProtoCAM has experience in fire-retardant urethanes. - Can ProtoCAM produce prototypes with living hinges? Yes. - How many parts per day can be produced? The phrase "shoot a mold" refers to the pouring of urethane into an empty mold. Typically a mold can be shot 1-3 times per day. A single mold can sometimes produce up to 10 pieces at once. The amount of parts a mold can hold depends greatly on the part complexity and size. A urethane can be strengthened by heat treating it before removing it from the mold. This process, however, produces only one shot per day. - How does ProtoCAM price urethane parts? This varies from project to project depending on the parts' size and complexity, as well as the quantity of parts. - How many shots can a mold withstand? Typically, around 15-25 shots. This figure depends on the part size and complexity. For very complex molds, expects 10-15 shots; while for simple molds, expect 30-50 shots. - How accurate are RTV molds? As accurate as the stereolithography prototype (+/-0.005"); however, tolerances of +/-0.002" have been achieved.

Cast Urethanes/RTV Molding (Polyurethanes)

Cast Urethanes, RTV Molding, or Polyurethanes (Polys) all refer to a low volume production method that produces parts from a Polyurethane plastic material for prototyping purposes.

These parts have material properties similar to production like plastics. It is possible to make these parts appear just like hard tooled plastic parts by means of surface finish, color, accuracy, and material properties.

Cast Urethanes are ideal for marketing samples, test prototypes or other situations where few (1-100) pieces are required but time and money does not allow an injection-molding tool to be produced.

Quickparts Advantage

- Quick Quotes: Upload your 3D CAD data, define your project specs and a custom quote is generated and emailed to you within 24 hours.

- Fast Time-to-Market: Standard Lead Time is 6-9 working days for First Articles. Parts are produced at an approximate rate of 2-4 parts per day.

- Overnight Delivery: Shipments are via FedEx Priority Overnight, unless otherwise specified.

- Quality Customer Service: Dedicated Project Managers that take you from design to prototype to production.

Cast Urethane Highlights

- Materials Available: ABS-Like, PE-Like, Lexan-Like, Glass Filled Nylon, High Strength, Elastomeric (25A, 42A, 60A, 80A).

- Ideal for marketing samples.

- Layer Thickness: High-Resolution: 0.002" - 0.004"; Standard Resolution: 0.005" - 0.006".

- Textures: None, Light, Medium, Heavy, Light Pipe.

- Finish Quality - Standard vs. Show.

- Samples available upon request.

RTVS 3-95-1 is a low viscosity, thermally conductive RTV silicone compound, UL recognized under file E86165 for flame class 94V-0.

•Addition reaction silicone

•Good for deep section cure

•High thermal conductivity

•Good working viscosity

•UL approved in all colors

•Flame retardant - meets UL 94V-0

RTVS 27 is a low viscosity UL 94V-0 Flame Retardant, general purpose, reversion resistant RTV Silicone. With the ability to cure rapidly at elevated temperature, RTVS 27 combines the virtues of low temperature flexibility, excellent electrical properties, high temperature resistance and easy removal for component replacement or repair.

Rapid PSI offers two methods of tooling in-house for the use in producing high quality prototypes and short run production part(s). RTV (Room Temperature Vulcanized) and urethane are tooling methods that allow you to obtain accurate duplicate part(s) of a master quickly and inexpensively. Delivery of part(s) usually ranges from 7 to 10 days.