Thursday, December 13, 2007
What is Teflon®?
Teflon® is a registered trademark and a brand name owned by DuPont. Teflon® is not a chemical, but rather, represents a family of high-performance fluoropolymer based products that are used in a wide variety of industrial and consumer applications. The Teflon® brand has come to represent a variety of benefits to consumers including easy clean, nonstick, repellency and durability. Since the early 1960s, Teflon® brand non-stick coatings have been used on cookware. Although consumers may use the brand, Teflon®, as a generic term to refer to all non-stick cookware, the Teflon® brand refers only to certain non-stick coatings manufactured by DuPont and sold under the Teflon® brand name. The coating on non-stick cookware is made from a liquid "paint" which contains PTFE (polytetrafluoroethlyene) fluoropolymer and sometimes other fluoropolymers. The final cookware coating is a dried, durable non-stick material which delivers the easy clean and non-stick performance that you expect from your cookware coated with Teflon®
Teflon® has also become the common name used to refer to fluoropolymer tubing, of which there are several types, including PFA, PTFE, PVDF and FEP. In order to make this tubing, fluoropolymer resin is supplied in powdered form which is mixed, preformed, extruded into a paste, and then extruded again to form tubing. PTFE is the most flexible of all fluoropolymers offered. It has the broadest temperature range of any fluoropolymer and can resist highly corrosive liquids and gases even at elevated temperatures. The smooth surface finish and lowest coefficient of friction & lubricity make it ideal for bushing or bearing applications. PTFE’s translucent white color will vary naturally from lot to lot, however the quality and physical properties do not change.
Teflon® has also become the common name used to refer to fluoropolymer tubing, of which there are several types, including PFA, PTFE, PVDF and FEP. In order to make this tubing, fluoropolymer resin is supplied in powdered form which is mixed, preformed, extruded into a paste, and then extruded again to form tubing. PTFE is the most flexible of all fluoropolymers offered. It has the broadest temperature range of any fluoropolymer and can resist highly corrosive liquids and gases even at elevated temperatures. The smooth surface finish and lowest coefficient of friction & lubricity make it ideal for bushing or bearing applications. PTFE’s translucent white color will vary naturally from lot to lot, however the quality and physical properties do not change.
# posted by fluoropolymer_blogger @ 2:57 PM 
Comments:
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Dear Sir,
Receive my regards and my name is Andy Liu working in Asambly Chemicals Co. I am responsible for international sales of PVDF. We are a leading manufacturer of PVDF in China, which used as the base resin for plastic and coating, showing very good performance.
Our plastic grade PVDF, made from purity 99.9% min vinylidene fluoride (VDF) monomer, can be used for extrusion and injection, it is a white or semitransparent pellet (granule) of polyvinylidene fluoride homopolymer, which can be well fabricated into pipes, sheets, rods and fishing line. Our PVDF is equivalent to Kyanr 460 and 720, the specification is below:
PVDF RESIN FOR EXTRUSION:
Property
Unit
Values
Test method
Specific Gravity
/
1.75~1.77
ASTM D792, @23/23℃
Melting point
℃
158~162
ASTM D3418, 10℃/min
Melt Flow Index
g/10min
8~16
ASTM D1238, 230℃/21.6kg
Water Absorption
%
≤0.05
ASTM D570
Tensile Yield Strength
Mpa
≥45
ASTM D638, 50mm/min@23℃
Elongation at Yield
%
≥10
Tensile Break Strength
Mpa
≥40
Elongation at Break
%
≥100
Hardness
Shore D
70~80
ASTM D2240
PVDF RESIN FOR INJECTION:
Property
Unit
Values
Test method
Specific Gravity
/
1.77~1.79
ASTM D792, @23/23℃
Melting point
℃
165~171
ASTM D3418, 10℃/min
Melt Flow Index
g/10min
15~25
ASTM D1238, 230℃/5kg
Water Absorption
%
≤0.05
ASTM D570
Tensile Yield Strength
Mpa
≥40
ASTM D638, 50mm/min@23℃
Elongation at Yield
%
5~10
Tensile Break Strength
Mpa
≥30
Elongation at Break
%
20~50
Hardness
Shore D
70~80
ASTM D2240
All the specification above is adjustable according to your requirements, for instance, the value of Melt Flow Index can changed to meet your needs. You can test our sample at first.
Our PVDF is equivalent to Kynar 460 and 720, but our price is much competitive. If you have interest in our products, please feel comfortable to contact us. Your kind attention and reply will be highly appreciated.
Thanks and best regards,
Andy Liu
Sales Manager / Technical Support
****************************
HIGH HOPE INTERNATIONAL GROUP
ASAMBLY CHEMICALS COMPANY, LTD
High Hope Mansion, 91 Baixia Road,
Nanjing 210001, P.R.China.
Tel: +86 25 84691379
MP: +86 13770681660
Fax:+86 25 84691686
Email: andyliu@asambly.com
****************************
Post a Comment
Receive my regards and my name is Andy Liu working in Asambly Chemicals Co. I am responsible for international sales of PVDF. We are a leading manufacturer of PVDF in China, which used as the base resin for plastic and coating, showing very good performance.
Our plastic grade PVDF, made from purity 99.9% min vinylidene fluoride (VDF) monomer, can be used for extrusion and injection, it is a white or semitransparent pellet (granule) of polyvinylidene fluoride homopolymer, which can be well fabricated into pipes, sheets, rods and fishing line. Our PVDF is equivalent to Kyanr 460 and 720, the specification is below:
PVDF RESIN FOR EXTRUSION:
Property
Unit
Values
Test method
Specific Gravity
/
1.75~1.77
ASTM D792, @23/23℃
Melting point
℃
158~162
ASTM D3418, 10℃/min
Melt Flow Index
g/10min
8~16
ASTM D1238, 230℃/21.6kg
Water Absorption
%
≤0.05
ASTM D570
Tensile Yield Strength
Mpa
≥45
ASTM D638, 50mm/min@23℃
Elongation at Yield
%
≥10
Tensile Break Strength
Mpa
≥40
Elongation at Break
%
≥100
Hardness
Shore D
70~80
ASTM D2240
PVDF RESIN FOR INJECTION:
Property
Unit
Values
Test method
Specific Gravity
/
1.77~1.79
ASTM D792, @23/23℃
Melting point
℃
165~171
ASTM D3418, 10℃/min
Melt Flow Index
g/10min
15~25
ASTM D1238, 230℃/5kg
Water Absorption
%
≤0.05
ASTM D570
Tensile Yield Strength
Mpa
≥40
ASTM D638, 50mm/min@23℃
Elongation at Yield
%
5~10
Tensile Break Strength
Mpa
≥30
Elongation at Break
%
20~50
Hardness
Shore D
70~80
ASTM D2240
All the specification above is adjustable according to your requirements, for instance, the value of Melt Flow Index can changed to meet your needs. You can test our sample at first.
Our PVDF is equivalent to Kynar 460 and 720, but our price is much competitive. If you have interest in our products, please feel comfortable to contact us. Your kind attention and reply will be highly appreciated.
Thanks and best regards,
Andy Liu
Sales Manager / Technical Support
****************************
HIGH HOPE INTERNATIONAL GROUP
ASAMBLY CHEMICALS COMPANY, LTD
High Hope Mansion, 91 Baixia Road,
Nanjing 210001, P.R.China.
Tel: +86 25 84691379
MP: +86 13770681660
Fax:+86 25 84691686
Email: andyliu@asambly.com
****************************
# posted by 
: July 24, 2008 5:47 AM
: July 24, 2008 5:47 AM << Home
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