Platinsil 40 is a premium grade addition curing type two-component Silicone RTV, designed for prototyping and mold making applications. This is a flowable grade, when mixed with catalyst (Part B) cures at room temperature to a high strength flexible elastomer. Platinsil 40 will reproduce exactly the finest detail of the master and is suitable for a variety of art related and industrial applications such as mold making for reproducing prototypes, furniture, architectural items and sculptures. This grade can also be used for electrical sleeve coating.

PRODUCT FEATURES :
• Flowable type high strength silicone rubber curing at room
temperature – Excellent detail reproduction
• Good mechanical properties – leading to long mold service life
• Highly elastic and excellent release properties – for easy de-molding.
• Excellent chemical resistance – compatible with most molding materials with long service life

SPECIAL CHARACTRISTICS
• Low viscosity – Good Flow
• Excellent mold release
• Room Temperature cure or accelerate with heat
• Low shrinkage (low temperature cure)
• Good transparency and mechanical properties

APPLICATIONS :
• Prototype Mold making for electric and electronic industry such as home appliances, television, mobile phones, copying machines etc.
• Prototypes for developing new designs for automotive applications such as lamp housings, radiator grills, fenders, bumpers etc.
• Potting and encapsulation of electronic components
• Molds made of Platinsil 40 can be used to cast a variety of reproduction materials such as polyester resins, polyurethanes low melt metal alloys, epoxies, wax, gypsum, clay, concrete …
• Electrical Sleeve coating and Flexible Technical fabric coating.

Technical Overview

Uncured Properties

Cured Properties * (72 hours@23⁰C)

* Typical Properties, should not be used as specification

PACKING
Platinsil 40 is available in the following kit forms :
• Kit of 5.50 kg (5 kg Platinsil 40 Part A + 500 gram of Platinsil 40 Part B)
1. 4 such kits (22 kg) packed in a cardboard box
• Kit of 1.10 kg (1 kg Platinsil 40 Part A + 100grams of Platinsil 40 Part B)
10 such kits (11 kg) packed in a cardboard box

INSTRUCTIONS FOR USE
• Surface Preparation: For prototyping or reproduction the master surface should be clean, free of loose materials and dust particles. With porous substrates use a suitable release agent such as petroleum jelly or soap solution. Contact with certain materials such as sulfur containing rubbers (natural rubber) chlorinated rubbers, Tin cured silicone RTVs, should be avoided as these materials can cause cure inhibition.

• Mixing of Components: Thoroughly stir Platinsil 40before use. Select a container for mixing which is 4-5 times larger than the total material to be mixed. Weigh the A and B components in the desired ratio (ex: 100:10). Stir vigorously for several minutes scraping the sides and the bottom of the container to produce a homogeneous mix. Hand or mechanical (power) mixing can be used but do not mix for an extended period of time to avoid entrapping large amounts of air or causing over heating resulting in shorter work life.

• De-aeration: It is recommended that entrapped air be removed under vacuum (about 20 mm of mercury) to eliminate voids in the final product. This process will make the mixture to expand and then collapse. A volume increase of about 4-5 times occur will during the de-aeration. Therefore, a large container should be used to accommodate this volume change. De-aeration is usually continued for about 2 minutes after frothing ceases.

• Pouring the Mix and Curing: The mix should be poured as soon as possible on to the original master to avoid air entrapment. This system is sensitive to temperature and therefore can influence the cure speed. However, the material will cure to a flexible rubber within 24 hours at room temperature.

HANDLING PRECAUTIONS AND SAFETY
Platinsil 40 contains constituents that have been found to be neither toxic nor aggressive and are safe for use. Hence special handing precautions except general industrial hygiene need to be followed. Adequate protective measures are recommended. Please request for a Material Safety Data Sheet when you use this product.

USABLE LIFE AND STORAGE
The shelf life of Platinsil 40 and the catalyst is 6 months from the date of manufacturing if stored below 27o C in original unopened containers. Store the material in a cool place out of direct sunlight. Keep the material out of the reach of children.

Platinsil 40 is manufactured in India by Performance Polymers, and distributed by Link Composites. For further questions, please get in touch with us at response@elink.co.in