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The most commonly used PVDF-based terpolymers are P(VDF-TrFE-CTFE) and P(VDF-TrFE-CFE). [ 21 ] [ 22 ] This relaxor -based ferroelectric terpolymer is produced by random incorporation of the bulky third monomer ( chlorotrifluoroethylene , CTFE) into the polymer chain of P(VDF-TrFE) copolymer (which is ferroelectric in nature).
A logical spreadsheet is a spreadsheet in which formulas take the form of logical constraints rather than function definitions.. In traditional spreadsheet systems, such as Excel, cells are partitioned into "directly specified" cells and "computed" cells and the formulas used to specify the values of computed cells are "functional", i.e. for every combination of values of the directly ...
In a spreadsheet, cells can contain formulas referring to the contents of other cells; if the user changes the content of a cell, the values of all its dependent cells are automatically updated. In a similar fashion, the properties of components in a Power Fx program are connected by formulas (whose syntax is very reminiscent of Excel ) and ...
Microsoft Excel is a spreadsheet editor developed by Microsoft for Windows, macOS, Android, iOS and iPadOS.It features calculation or computation capabilities, graphing tools, pivot tables, and a macro programming language called Visual Basic for Applications (VBA).
Vinylidene chloride and fluoride can be converted to linear polymers polyvinylidene chloride (PVDC) and polyvinylidene fluoride (PVDF). The polymerization reaction is: n CH 2 =CX 2 → (CH 2 −CX 2) n. These vinylidene polymers are isomeric with those produced from vinylene monomers. Thus polyvinylene fluoride from vinylene fluoride (HFC=CHF).
On the top of photovoltaic cells, the transparent PVF film protects against moisture, while the white-pigmented film is used on their bottom surface. [4] PVF films are non-adhering to phenolic, acrylic and epoxy resins and can be therefore used as release films, usually in high-temperature processing of these resins. [4]
In its MS-DOS (character cell) version, widely considered to be responsible for the explosion of popularity of spreadsheets during the 80s and early 90s. [citation needed] Microsoft Office Excel – for MS Windows and Apple Macintosh. The proprietary spreadsheet leader.
Current advances use a blending procedure to make composites that are based on the simple combination of PVDF and cheap metal powders. Specifically, Ni powders were used to make up the composites. The dielectric constants were enhanced from values there were less than 10 to approximately 400.