New Product: United Initiators organic peroxide initiators improve EVA performance


Product Briefing Outline:  specializes in manufacturing and supplying cross-linking agents to compounders and manufacturers of PVM encapsulates. Cross-linking with organic peroxide initiators adds many product and performance advantages, chief of which is the improvement in stability of the encapsulate films produced for PV manufacturing. PV manufacturers rely on special formulation of ethylene vinyl acetate (EVA) that includes peroxides to achieve dimensional and UV stability through crosslinking.

Problem: Some PV manufacturing companies are vertically integrated, making the components and assembling the PVMs. They rely on EVA encapsulants tailored to their applications' needs. Others in photovoltaic manufacturing buy their materials from outside compounders, and then assemble the materials into PVMs. While compounders are knowledgeable about peroxide initiators, United Initiators often is able to assist them in gaining performance with the crosslinking agents. A key problem is discoloration, a yellowing or hazing that causes a reduction in the sunlight that penetrates to the silicon wafer, and the goal obviously is to continue to reduce discoloration. This extends the period of time during which the photovoltaic encapsulants are at their maximum clarity.

Solution: Stabilizing PVM encapsulates improves their performance, and stabilizes their color and cure characteristics. Solar encapsulates are typically made with ethylene vinyl acetate (EVA), which in sheet form is used to surround and protect silicon wafers and the PVMs' circuitry. Other benefits of the increased stability of the current generation of EVA encapsulates include better adhesion, reduced cell breakage and tailored flexibility. Cross-linking in PV manufacturing may extend performance of encapsulate sheet material to 20 or 30 years — a period as long as the product's lifespan. Cross-linking by peroxides has a positive effect on the properties of materials. Cross-linking results in a low compression set, improved thermal aging and elimination of discoloration.

Applications: PV module lamination.

Platform: Organic peroxides.

Availability: Currently available.

23 August 2022
Intersolar South America, South America’s largest exhibition and conference for the solar industry, takes place at the Expo Center Norte in São Paulo, Brazil, on August 23–25, 2022, and has a focus on the areas of photovoltaics, PV production and solar thermal technologies. At the accompanying Intersolar South America Conference, renowned experts shed light on hot topics in the solar industry. In 2021 – despite the Covid-19 pandemic – Intersolar South America welcomed more than 28,000 visitors and over 1,000 conference attendees over 3 days. 200+ providers showcased their products. Combining local and international expertise, Intersolar South America brings together the PV and solar thermal sector to discuss the current status and strategic trends for Latin American PV markets, as well as technology innovations and new business opportunities. Overall, distributed generation is still driving momentum in the Brazilian market. Get 10% off with code 38LCF6KN
6 September 2022
Intersolar Mexico sits at the cross-section of photovoltaics, solar heating & cooling technologies, and energy storage. The event serves as the industry’s go-to source for invaluable technology trends and premier B2B contacts in the promising Mexican solar market. From September 6–8, 2022 Intersolar Mexico together with the co-located The GREEN Expo® and Aquatech Mexico will take place in Centro Citibanamex, Mexico City.
7 September 2022
The demand for rooftop solar PV is soaring, driven by falling costs of the technology against energy crises that are gripping countries globally. But while an increasing number of households turn to solar to generate their own electricity, there is now a need for more specialist equipment, technologies and services to ensure the solar transition can reach as many customers as possible. Delivering these is now a major challenge for rooftop solar installers. This webinar will analyse the characteristics of the rooftop solar market, discussing how the products, logistics, installation and servicing of solar systems has evolved in line with consumer demands.
14 September 2022
Join us in London for 2 days as we look at the UK’s new landscape for utility & rooftop solar. Understand the new opportunities within this GW-plus annual market!
15 September 2022
Bifacial PV modules will be the dominant solar PV technology globally within one or two years; in the utility-scale sector, their market share is already above 70%. This webinar will provide a clear view on the successful implementation of bifacial technology, maximizing system performance and minimising LCoE.
19 September 2022
RE+ 2022 is the umbrella event that includes SPI, ESI, RE+ Power, and RE+ Infrastructure. As North America's largest renewable energy event, it's a catalyst for industry innovation that's supercharging business growth in the clean energy economy.

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