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Momentive Performance Materials has developed IVS4742, a self-bonding LED encapsulant material with a viscosity and clarity that enables low-pressure direct-onboard lens moulding.

Direct-onboard lens moulding combines the potting, lens-moulding and mounting steps into a single process.

IVS4742 is a two-component, addition-cure silicone rubber designed for optical-device coating.

Its low viscosity can allow low pressure, which helps minimise risk for LED damage.

Its cure speed typically enables IVS4742 to be demoulded after 2min at 150C, with further post cure required to assure completion of cure and adhesion to substrates.

The mould itself also needs to feature ease of demould properties, for example a Teflon layer.

Key features of the material include: transparency; low viscosity allowing for good flow; 1:1 mix ratio by weight; fast curing with heat and adhesion to parts; and adhesion to PPA.

Techsil

Distributors of a vast array of industrial Adhesives, Sealants, Tapes, Casting Resins and Dispensing equipment, serving a wide range of manufacturing industries including Electronics, Aerospace, Automotive, Medical, LED Lighting, Product Assembly, Rapid Prototyping and Packaging. Techsil® are authorised distributors for Momentive’s adhesive sealants. A particular strength is our in depth knowledge of technical adhesive and sealant applications in real production environments and we pride ourselves in providing the best customer care and service.

Techsil® was set up in 1989 and with our commitment to quality, technical excellence and reliability we have evolved into one of the most trusted Adhesives and Sealants suppliers around. We are global distributors of a vast array of industrial Adhesives, Sealants, Tapes and Dispensing equipment, serving a wide range of manufacturing industries including Electronics, Aerospace, Automotive, Medical, LED Lighting, Product Assembly and Packaging to name just a few.

How Can We help You? When you need the best materials for bonding, potting, sealing, coating or overmoulding, Techsil’s Technical Experts will help in product selection, from silicones, hot melt adhesives, tapes, epoxies, hook & loop fasteners and polyurethanes to the latest innovative UV LED curing systems. Techsil® specialises in adding value to industry by providing you with a consultancy / problem solving service through materials technology and process improvement. We have gained an enviable reputation in customer care and service.

Through good partnerships with our suppliers, we are able to offer a complete range of solutions to include well-established product ranges and new, technologically advanced materials. We are authorised distributors for Momentive Performance Materials, ThreeBond, MG Chemicals, BJB, ITW Devcon, Power Adhesives, FastFixers, ITW Stokvis Tapes, VELCRO®, Araldite®, ChemTrend, Panacol and Hönle and we also have a growing range of Techsil’s own brand products.

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