Manufacturer of plastic Lined Piping, Valves & Equipments.

Advantages of Fluoroplastics


	Fluoroplastics: The Perfect Solution to Your Design Problems
	PTFE-PFA-FEP-ETFE-PVDF
Problem	Solution
Adhesion, Release	Possess extremely low surface energy in the solid state, thus providing an excellent anti-stick, non-wetting contact surface.
Atmospheric Aging	Are transparent to ultraviolet light and extremely resistant to oxidation, surface fouling, discoloration, and embrittlement.
Biodegradation	Are inert to enzymic and microbiological attack because the pure polymer does not provide nourishment or porosity for these growths.
Low-Temperature Service	Retain their excellent properties event at cryogenic temperatures. In addition, their impact resistance at these temperatures exceeds that of most other polymers.
Contamination:	Except for specialized grades, fluoropolymers are chemically inert and pure. They generaly contain no additives-plasticizers, stbilizers, lubricants, or antioxidants which could contaminate process fluids.
Friction and Wear	Feature one of the lowest coefficients of friction of any solid material. Their abrasion resistance is adaptable to demanding environments by using inorganic filters, such as glass, fibre, graphite, and powdered metals.
Heat	Retain their properties after exposure to temperatures bryound the limit of almost all other themoplastics and elastomers. Depending on the end-use requirments, these resins are often rated for continuous service at temperatures as high as 2602 deg. C. In certain cases, they can also withstand short excursions to higher temperatures.
Humidity	Are extreamely hydrophobic and completely resistant to hydrolysis. They are good barriers to water permeation; their typical properties and dimensional stability remmain unchanged even after years-long immersion in water.
Light stability	Have one og the lowest refractive indexes. They do not change their visual appearane after exposure to light ranging from ultraviolet to infrared.
Corrosion	Resist even the most aggressive organic and inorganic chemicals and solvents over a broad temperature range.
Dielectrics	Possess high dielectric dtrenght, a low dielectric constant, low loss factors, and extremely high specific resistance. Furthemore, they surpass most materials in their level and stability of dielectric properties over a broad range of environmental conditions.
Flame Resistance	offer remarkable resistance to high temperatuire and flames because they have very high melting points and auto-ignition temperatures, as well as exceptional thermal degradation thersholds. moreover their flame propagation characterstics, such as rate of heat release and somke generation, are very low.
Long Services Life	Exhibit outstanding retention of properties after aging, even at high temperatures and in the presence of solvents, oils, oxidizing agents, ultraviolet light, and other environmental agents. In addition, because they do not use any leachable or degradable stabilizing additives, they offer an important safety advantage when designing products for long service life.

Corrosion Resistance Chart


Chemical class
1	Acids	Inorganic
		Organic
2	Alkalies
3	Salts
4	Halogens
5	Solvents	Aliphatic Hydrocarbons
		Aromatic Hydrocarbons
		Chlorinated Hydrocarbons
		Ketones
		Amines
		Alcohols
		Furanes
		Esters
		Aldehydes
6	Phenols

Properties of Plastics

Physical properties of important plastics


Properties	Standard	Units	PTFE	PFA	FEP	ETFE	PVDF	PP
Mechanical
density	DIN 53479	g/cm3	2.15	2.15	2.15	1.70	1.78	0.90
tensile strength	DIN 53455	N/mm2	20-40	24-30	21-28	44	40-60	33
elongation at break	DIN 53455	%	140-140	300	240-350	200	20-80	20-800
tensile modulus	DIN 53457	N/mm2	350-750	280	350-500	900-1300	2400	1100-1300
flexural modulus	ASTM D790	N/mm2	500	620-670	650-670	1300	2250
flexural stress	DIN 53452	N/mm2	5.6	18	18	>12	74	47
impact strength	ASTM D256	J/m	189	no break	no break	no break
hardness shore'D'	DIN 53505		55	55	55	75	78	73
Coefficient of friction, dynamic	ASTM D1894	<3m/min	0.1	0.2	0.2	0.23
Thermal
linear thermal expansion coefficient	ASTM D696	10^5K^1	12-20	14	9-11	8-12	12.8	15
upper permanent service temp. limit		deg.C	260	260	205	155	150	100
lower permanent service temp.		deg.C	-200	-190	-190	-190	-40	-15
Vicat-point B	DIN 53736	deg.C	130-140	74	70		142	102
thermal conductivity	DIN 52612	W/mK	0.24	0.19	0.25	0.23	0.19	0.22
specific heat capacity		KJ/kg K	1.0		1.12	1.95	0.96	1.7
melting point	DIN 53736	deg.C		305	275	270	178	165
Oxygen index	ASTM D2863	%	95	95	95	30	43.7
fire class	UL 94		V-0	V-0	V-0	V-0	V-0	HBN-2
Electrical
Surface resistivity	DIN 53482	ohm	>10^17	>10^18	>10^16	5*10^14	>10^13	>10^13
volume resistivity	DIN 53482	ohm.cm	>10^18	>10^18	>10^16	>10^16	5*10^14	>10^17
dielectric strenght(foil 0.2-0.25mm)	ASTM D149	kV/mm	>20	>80	>83	>80	30-60	75
dielectric constant(10^6Hz)	ASTM D150		2.1	2.1	2.1	2.6	7.5	2.3
dielectric factor(10^6Hz)	ASTM D150		>0.0003	0.0001	0.0006	0.005	0.185	<0.001
General
weather resistance	Florida exposure	years unaffected	20	20	10	15

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