Surface World August 2018 (Show Guide) Surface World Aug 2018 - Page 134

PRE-TREATMENT, SURFACE PREPARATION, DEGREASING & CLEANING Cleaning solvent regulations drive new product development – welcome Novec™ 73DE Engineered Fluid Precision cleaning of metals and electronic components sounds like a pretty ordinary undertaking, however, it masks the importance of how vital it can be to have non-contaminated parts which, in their fi nal purpose, are either life-enhancing or ensure our lives continue to function smoothly in an ever evolving world. Whether it is cleaning automotive components, removing flux from printed circuit boards controlling aircraft navigation systems, or, indeed, ensuring medical implants are free from contamination before surgery - selection of the right solvent determines the effectiveness and safety of a process. Increasing regulation of cleaning solvents has changed this industry in the last 20 years. The F-Gas regulation aims to reduce the emission of fluorinated greenhouse gases used in solvent cleaning applications, with prohibition of some HFCs and phasing down all other HFCs to only 21% of 2009-2012 levels by 2030. REACH regulations covering the registration, evaluation, authorisation and restriction of chemicals have had a direct impact on nPB (n-propyl bromide). A sunset date of 4th July 2020 means that nPB can no longer be used without authorisation. Phasing down or outright banning of products with toxicity concerns has meant that supply chains have sought out safer, more environmentally friendly solutions, such as aqueous, segregated hydro-fluoro-ethers (HFEs) or hydro-fluoro-olefins (HFOs). In response to increasing market needs, 3M™ has introduced a new product to the market - Novec™ 73DE Engineered Fluid. 132 It is a high performing, cost-effective replacement for n-propyl bromide (nPB), trichloroethylene (TCE), and high global warming potential (GWP) hydro-fluoro- carbons (HFCs). It has three main applications: Cleaning solvent for heavy-duty vapour degreasing, immersion cleaning and spray cleaning. Solvent cleaner for heavy greases, oils, waxes, silicones and non-polar flux residues. Lubricant deposition applications where increased solvency is desired. Novec 73DE features and benefi ts: High solvency and low surface tension for maximum performance and better cleaning in components with complex geometries. Easy to maintain and use in a vapour degreaser with stable bath composition during extended use. Non-flammable and low in toxicity with an SHOW GUIDE - AUGUST 2018 excellent