UV Acrylic Adhesives from Permabond
Permabond has introduced 4 new UV acrylic adhesives combining the advantages of single-part application with a fast “cure on demand†capability.
UV7138, UV7168, UV7172 and UV7188 are an example of many similar exciting technologies which will expand Permabond’s existing range in the following months.
Permabond’s new UV adhesives cure to a transparent material almost instantaneously under UV light, permitting their use on high speed production lines. This adhesive range can be used for applications as diverse as the bonding of decorative glass and transparent plastic for the double glazing industry, to the sealing of automotive air bag initiating devices. All provide excellent chemical resistance. Each grade has unique individual qualities which can be tailored for a broad a range of end uses.
UV7138, a tough and flexible adhesive, has good impact and vibration resistance and can bond a variety of different surfaces including glass and metals. With handling time achieved in just a few seconds, bonding processes can be easily incorporated into high-speed production line assembly. Typical applications include air bag ignitors, glass furniture bonding, and filter screens manufacture.
UV7168 is a non-drip thixotropic gel. Formulated to provide high bond strengths on UV stabilised plastics such as polycarbonate and PMMA, substrate failure is often achieved. Its thixotropic nature provides a gap-fill capability of 3mm. It is ideal for decorative plastic and glass lens assembly, wire tacking and roof light applications.
UV7172 will bond “difficult†rigid or semi-rigid materials such as ferrite and those found in loudspeaker construction. It will also bond through stabilised plastics. Rapid curing and complete transparency after curing are further features.
UV7188 has a low viscosity of only 130 mPas (cps) and is toughened. Having been designed for structural bonding, it provides the highest performance of any Permabond UV product on glass and glass/metal. This adhesive can be post-applied (i.e.applied after the components have been brought together) allowing accurate alignment. UV7188 is suitable for bonding glass furniture and decorative glassware/ornaments.
All products are available in 50ml and 200ml bottles.
Ultra-Rez 500 for Ink Formulators
Eastman Resins, a wholly owned division of Eastman Chemicals have introduced Ultra-Rez 500, a new generation of phenolic-modified rosin esters. This product has been designed for lithographic applications, specifically the development of versatile inks.
The low polarity nature of Ultra-Rez 500 enables formulators to balance fountain solutions with ink, resulting in a wider water window. The ability to use less water has advantages such as less colour shift and improved consistency in ink coverage during print runs, as well as less wastage. Other properties of the new product include:
·        High viscosity
·        Good compatibility with a wide range of substrates
·        Good rheological stability allowing for variations in temperature and consistently providing a sharp-dot print
The Ultra-Rez 500 range of resins are suited to high performance paste or oil based printing inks typically used in varnishes, vehicles, coatings and adhesives.
SurfTech Coating for Plastic Drums
SurfTech from Harcostar is a new UN-approved internal coating for plastic drums and other plastic products that enables solvent-based hazardous chemicals to be transported.
The coating provides an impermeable barrier against hydrocarbon-based chemicals, meaning that steel drums can be replaced with plastics. In turn this gives savings in various areas – SurfTech drums have a brimful capacity that is 7% greater than the steel equivalent, the drums are lighter then the steel equivalent and drums are quieter in handling operations. Electrostatic build up is also reduced, minimising the risks of an explosive dischartge.
Nickel-Coated Graphite
Novamet’s nickel-coated graphite, distributed by Hart Coating Technology, combines the benefits of a low density graphite core with a highly conductive pure nickel outer layer, and can be incorporated into resins, such as silicone, to produce electrically conductive composites. This provides excellent attenuation properties when the materials are formed into gaskets, either extruded, moulded, sheet or foam-in-place, thereby providing a highly effective means of shielding electronic devices from radio frequency and electromagnetic interference. The overall performance of nickel-coated graphite in this application compares very favourably with more expensive fillers. These materials can also be used in conductive sealants, plasma spray friction applications and in graphitic aluminium.
Mixing Head for Foams and Elastomers
Mixing heads for the lowest end of the two-component dispensing field, such as formed in place foam gaskets, have to be made ultra precise because any irregularities in flow are magnified at small quantities. A new mixing head, the MK600 from EDF Polymer Applikation (via Polymer Dynamics), offers this accuracy. It has been developed with both silicone and polyurethane foams and elastomers in mind and has an output of between 0.25 and 0.60 grams per second.
IXEF Glass Fibre Reinforced Polymers
One of Solvay Advanced Polymers’s strongest growing products is the IXEF high performance compound. This plastic polyarylamide demonstrates a unique combination of features extreme rigidity, high fluidity, excellent surface finish, very low creep and high dimensional stability. These properties make it competitive with metal alloys.
Additionally, it offers excellent fatigue resistance, high chemical resistance to a wide range of chemicals, and a very low coefficient of linear thermal expansion.
The polyarylamide material allows a part to be simultaneously very thin, extremely rigid, complex, light and highly resistant to mechanical stress, as most IXEF grades are reinforced with 50 to 60% glass fibres.
High Performance Nylon
Rhodia Engineering Plastics has launched a new nylon, trademarked Technylstar, which has very good physical and rheological properties. The nylon is based on proprietary polymerisation and patented compounding technology. Special catalysts and chemicals produce a new arrangement of the macromolecules in the nylon’s molecular chain, creating a semicrystalline, non-linear polymer structure that the company claims is unique. The material offers good flow characteristics under normal processing, the option of up to 65% reinforcement, high quality `as moulded’ surface finish and good processing performance offering productivity improvements.
Decorative Plastic Additive
A new high performance decorative additive for injection moulded plastics is now available. CelloDec from UCB Films adds a speckled finish to injection moulded polypropylene, polyethylene and polystyrene and can be used to mimic stone or granite or to give added colour and sparkle. Made from ground pigmented cellulose film, CelloDec is non-abrasive and does not break down further after grinding. The material is pigmented during production, rather than coated, to eliminate colour bleeding into the host material.
Compact Silo for Plastic Storage
Braby have launched a new silo made from a flexible polypropylene bag liner held inside a strong, lightweight steel frame. The frame can be assembled quickly and simply using just a hammer and spanner and the silo can hold up to 60 tonnes of plastic granules. No additional foundations are required for erection inside a building and the silo is ideal for short term storage requirements.
Dismantling is easy, and when not in use it can be stored in only a small area making the new silo extremely convenient and space efficient
Automatic Temperature Control for Autoclave
A Spirax Sarco automatic temperature control system is being used by an industrial rubber hose manufacturer to provide accurate temperature control of an autoclave used for rubber curing, thus ensuring that all batches are produced under repeatable, consistent conditions. The control system has been installed as part of a programme to automate the autoclave. A sensor monitors the steam pressure inside the autoclave. If there is a variation it communicates with the controller, which is linked to a pneumatically actuated two port valve, which is able to modulate the steam supply to the process and ensures the required temperature is maintained to within +/- 0.5°C.