Huntsman Provides Materials for Solar Applications

Huntsman Advanced Materials has announced that it offers a wide range of material solutions for use in the production of solar energy components. Huntsman has worked in co-operation with industry partners to introduce a complete package of materials and processing technologies that are designed to enable actively temperature-controlled PV modules with increased efficiency. The liquid system, Araldite AY 4583/HY 4583, enables an energy-saving encapsulation process at low temperatures and eliminates the critical lamination process with EVA.

A range of heat-conductive, electrically insulating adhesives is said to enable a new module design and construction with improved heat transfer and efficiency, together with excellent strength and bonding properties. The company also offers thermally conductive adhesives to protect the flexibility of solar cells. Highly reflective, white solder mask Probimer 77 White contributes to the increased efficiency of the PV module through higher and multiple reflections, increasing the ratio of sunlight reaching the cells.

By using these new technologies there is potential to increase the efficiency of PV modules by more than 50 per cent, according to Huntsman. In addition, processing is simplified, costs are reduced and ageing stability is improved, claims the company. This package of materials is said to provide excellent bonding and heat-resistance features. It offers the ability to improve energy harvesting, reduce maintenance costs and prolong the lifespan of the PV module. Such materials would allow the installation of PV plants in adverse southern climates and deserts.

They could also be combined with solar-fuel generators where electrical energy is used to convert CO2 and H20 into natural gas. Another example of Huntsman's work in the solar energy market is Araldite 2015, which has TUV design and type approval for PV modules. Heat-transfer properties that are necessary for solar output efficiency are often achieved at the sacrifice of bonding features. However, Araldite 2015 allows a module design and construction with improved heat transfer and efficiency together with excellent strength and bonding properties, according to Huntsman.

Araldite 2015 properties of high shear and peel strength, combined with its resistance to water, chemicals and UV are not affected when used for improved energy-efficient solar panels in buildings. Tests are said to have shown that bonding of the aluminium extruded profiles onto the surface-treated polyvinyl fluoride back sheet of the solar module can withstand thermal cycling temperature cycles from -40C up to 85C without diminishing the strength of the bond.

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