Difference between revisions of "Polyvinyl fluoride"
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== Description == | == Description == | ||
| − | A clear, tough, flexible thermoplastic resin formed from vinyl fluoride. Polyvinylidene fluoride (PVDF) [(CH2 – CF2)n] is a thermoplastic fluorinated polymer that was invented and patented by the DuPont Corporation in 1948. Developed as a coating, its first widespread commercial use was as a pigmented liquid coating called Kynar 500®. Today, PVDF is used as a coating for metals. It is often made into a copolymer with other fluorinated monomers in order to improve or modify its properties. | + | A clear, tough, flexible thermoplastic resin formed from vinyl fluoride. Polyvinylidene fluoride (PVDF) [(CH2 – CF2)n] is a thermoplastic fluorinated polymer that was invented and patented by the DuPont Corporation in 1948. Developed as a coating, its first widespread commercial use was as a pigmented liquid coating called Kynar 500®. Today, PVDF is used as a coating for metals. It is often made into a copolymer with other fluorinated monomers in order to improve or modify its properties. This is an unusual polymer, i.ee, very specialized and expensive. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
| Line 10: | Line 10: | ||
==Applications== | ==Applications== | ||
| − | acid resistant | + | * Protective coatings, especially in stressful environments (high temperature, sun, acid, etc) |
| + | * Acid resistant filters | ||
| + | * Surgical sutures, medical devices | ||
| + | * Electrical braids | ||
| + | |||
==Personal Risks== | ==Personal Risks== | ||
| + | * Considered safe for normal use at room temperature | ||
| + | * Fluoropolymers will degrade upon prolonged heating or in a fire, liberating Hydrogen Fluoride (HF) and Carbonyl Fluoride (COF2). HF is toxic to skin and can damage bones if allowed to seep into the skin. COF2 is toxic if inhaled or it comes into contact with moist skin. | ||
| + | * MSDS: https://catalog.seelyeinc-orl.com/Asset/MSDS-Sheet-for-PVDF.pdf | ||
| − | == | + | ==Collection Risks== |
| − | |||
| − | |||
==Environmental Risks== | ==Environmental Risks== | ||
| + | Hazardous to environment if catches fire (requires extreme temperatures to do so). | ||
== Physical and Chemical Properties == | == Physical and Chemical Properties == | ||
| − | + | ||
* Soluble in cyclohexanone, dimethyl formamide | * Soluble in cyclohexanone, dimethyl formamide | ||
| − | * Insoluble in water, oils, alcohols, acids, alkalis | + | * Affected by strong alkalis, ester and ketones. |
| + | * Insoluble in water, oils, alcohols, acids, bleaches, weak alkalis | ||
* Inert in most aliphatic, aromatic and chlorinated compounds. | * Inert in most aliphatic, aromatic and chlorinated compounds. | ||
* Tenacity = 2.2-4.4 g/denier | * Tenacity = 2.2-4.4 g/denier | ||
| Line 30: | Line 37: | ||
* Density = 1.3-1.7 | * Density = 1.3-1.7 | ||
* Refractive Index = 1.42 | * Refractive Index = 1.42 | ||
| + | |||
==Working Properties== | ==Working Properties== | ||
== Resources and Citations == | == Resources and Citations == | ||
* Contributions: Catherine Stephens: AIC Plastics Panel, 2020. | * Contributions: Catherine Stephens: AIC Plastics Panel, 2020. | ||
| + | * https://www.raremanufacturing.com/wp-content/uploads/2015/09/Rare-Manufacturing-What-is-PVDF.pdf | ||
| + | * https://www.solvay.com/en/brands/solef-pvdf | ||
| + | * https://en.wikipedia.org/wiki/Polyvinylidene_fluoride | ||
| + | * https://www.zeusinc.com/wp-content/uploads/2019/01/RESINATE-SE-NewFocusOnPVDF-ZeusInc.pdf | ||
| + | * Qinglian Li, Sancai Xi, Xiwen Zhang Conservation of paper relics by electrospun PVDF fiber membranes Journal of Cultural Heritage Volume 15, Issue 4, July–August 2014, Pages 359-364 | ||
* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | ||
Latest revision as of 11:52, 27 September 2022
Description
A clear, tough, flexible thermoplastic resin formed from vinyl fluoride. Polyvinylidene fluoride (PVDF) [(CH2 – CF2)n] is a thermoplastic fluorinated polymer that was invented and patented by the DuPont Corporation in 1948. Developed as a coating, its first widespread commercial use was as a pigmented liquid coating called Kynar 500®. Today, PVDF is used as a coating for metals. It is often made into a copolymer with other fluorinated monomers in order to improve or modify its properties. This is an unusual polymer, i.ee, very specialized and expensive.
Synonyms and Related Terms
Polyvinylidene difluoride (PVDF); poly(vinylene fluoride); poli(fluoruro de vinilo) (Esp.); fluorure de polyvinyl (Fr.); polivinil fluoruro (It.); fluoreto de polivinilo (Port.); poly(vinyl fluoride); polyvinylfluoride (PVF), poly(1,1-difluoroethane)
Examples: Tedlar® [DuPont]; Kynar 500 (Arkema); Hylar 5000 (Solvay Solexis) ; Solef (Solvay); Sygef
Applications
- Protective coatings, especially in stressful environments (high temperature, sun, acid, etc)
- Acid resistant filters
- Surgical sutures, medical devices
- Electrical braids
Personal Risks
- Considered safe for normal use at room temperature
- Fluoropolymers will degrade upon prolonged heating or in a fire, liberating Hydrogen Fluoride (HF) and Carbonyl Fluoride (COF2). HF is toxic to skin and can damage bones if allowed to seep into the skin. COF2 is toxic if inhaled or it comes into contact with moist skin.
- MSDS: https://catalog.seelyeinc-orl.com/Asset/MSDS-Sheet-for-PVDF.pdf
Collection Risks
Environmental Risks
Hazardous to environment if catches fire (requires extreme temperatures to do so).
Physical and Chemical Properties
- Soluble in cyclohexanone, dimethyl formamide
- Affected by strong alkalis, ester and ketones.
- Insoluble in water, oils, alcohols, acids, bleaches, weak alkalis
- Inert in most aliphatic, aromatic and chlorinated compounds.
- Tenacity = 2.2-4.4 g/denier
- Elongation = 15-30%
- Moisture regain = 0.04%
- Melting Point = 170
- Density = 1.3-1.7
- Refractive Index = 1.42
Working Properties
Resources and Citations
- Contributions: Catherine Stephens: AIC Plastics Panel, 2020.
- https://www.raremanufacturing.com/wp-content/uploads/2015/09/Rare-Manufacturing-What-is-PVDF.pdf
- https://www.solvay.com/en/brands/solef-pvdf
- https://en.wikipedia.org/wiki/Polyvinylidene_fluoride
- https://www.zeusinc.com/wp-content/uploads/2019/01/RESINATE-SE-NewFocusOnPVDF-ZeusInc.pdf
- Qinglian Li, Sancai Xi, Xiwen Zhang Conservation of paper relics by electrospun PVDF fiber membranes Journal of Cultural Heritage Volume 15, Issue 4, July–August 2014, Pages 359-364
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
- J.Gordon Cook, Handbook of Textile Fibres:II Man-made Fibres, Merrow Publishing Co. , Durham, England 1984, p.520.