PVDF Material in Oman

PVDF or polyvinylidene fluoride is a crystalline fluorinated thermoplastic with high chemical impedance to organic and mineral acids, hydrocarbons, and solvents. PVDF material has high mechanical toughness, low moisture absorption, and a wide operating temperature range.
PVDF material can be easily fabricated using a standard metal cutting machine tools, resulting in a smooth surface finish and tight tolerances. Designers will find technical properties information on the backside. Greater information and engineering assistance are available upon request.

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PVDF Structure

This image is used for Petron Thermoplast website.

PVDF is a thermoplastic semi-crystalline polymer. The degree of crystallinity varies between 35 and 70% based on the preparation method. It is unique that it has a blend of electrical and mechanical attributes (i.e., piezoelectricity), handles high purity standards, and is resistant to most chemicals.
That includes solvents, acids, and hydrocarbons. Hence, it is suitable to use in Oman.

PVDF items have the chemical formula (CH2=CF2)n, which is positioned between polyethene (PE: (CH2=CH2)n) and polytetrafluoroethylene (PTFE: (CF2=CF2)n). It has a simple chemical structure, the flexibility of PE, and a few of the stereochemical constraints of PTFE.
PVDF’s molecular and crystal formation change depending on how the samples are prepared.

Crystal Structure of PVDF

It is, as previously stated, a semi-crystalline polymer that is 50% amorphous. The structure is designed so that most PVDF units are connected from head to tail, with only a few units linked from head to head.
The fluoropolymer is available in four different conformations and shapes. Due to the oblique nature of the C-F bonds, an alignment is formed to obtain the highest dipole movement in the same manner. Because of the piezoelectric properties of the resin, it is the prudent phase.

Dipole motion in the opposite direction of crystallite movement results in zero net polarisation.

The Key Properties of PVDF

Several of the most distinguishing characteristics of a PVDF material are listed below.

  • Outstanding abrasion resistance
  • Excellent thermal stability
  • Good energy radiation and ultraviolet light (UV) resistance
  • Greater creep resistance under long-term stress (creep)
  • Higher strain resilience during cyclic loading
  • Dielectric strength is very high.
  • Resistance to most chemicals and solvents
  • Low water absorption; at room temperature, absorbs less than 5% water. Mechanically firmer than other fluoropolymers.

PVDF Sheet in Oman

PVDF sheet has excellent chemical resistance as well as good mechanical, thermal, and electrical properties. It has good UV, corrosion, and radiation resistance and can be used in food contact applications.
These sheets are also a versatile engineering material due to their high wear resistance and sliding properties.

Applications of PVDF Sheet

Insulation for electrical wires and cables, medical packings, anti-corrosion linings, corrosion-resistant diaphragms, pipe-lining for corrosive liquids and gases, slide parts, and agitators are all examples.

Important Characteristics

  1. Temperature range: -30°C to +140°C (150°C in the short term).
  2. Excellent chemical resilience and pureness.
  3. Excellent wear resistance.
  4. PVDF sheet has excellent UV and weather resistance.
  5. Excellent electrical insulation properties.
  6. Weldability is excellent.
  7. FDA-approved for food contact; therefore, it will use in many of Oman’s various industrial sectors.
 

Polyvinylidene Fluoride

It is an expensive white, semi-crystalline, and semi-opaque engineering thermoplastic that can be converted by melting. Polyvinylidene fluoride is resistant to heat and chemicals in general. It is resistant to abrasion and radiation. Furthermore, it has high dielectric losses, slightly more rigid and stronger than most (melt-processable) fluoropolymers.

Advantages

The maximum tensile strength of all utilisable fluorocarbons is Polyvinylidene fluoride(PVDF). It is radiation resistant (better than other fluorocarbons), melts processable, and is abrasion resistant.

The maximum operating temperature is 150°C (300°F). Effective piezoelectric properties.

Its Utilisation

Chemical process sector applications include bearings, pipes, pipe fittings, vessels and linings (all specifically for the chemical production industrial sector).

Also includes the wire insulation, science lab apparatus, heat-shrinkable tubing, and piezo-electric equipment.

We are a PVDF Plastic Supplier in Oman

It is created using free radicals to polymerise the monomer vinylidene difluoride (1,1-difluoroethylene). It happens in the presence of an emulsion. Temperatures of PVDF Plastic ranged from 10 to 150 °C, and pressures ranged from 10 atm to 300 atm at the time.

Spin coating:

Thin films are extended or exposed to high pressure or an electric field to develop piezoelectric thin-film gadgets from the polymer’s higher beta-phase.

Melt Casting:

PVDF Plastic involves heating the polymer until it melts, then pouring it into a mould of the desired shape till it solidifies and cools.

 

Solution casting:

The polymer is melted in an inadequate solution to make porous polymer membranes. PVDF solubility is affected by the solvent’s temperature, polarisation, and molecular weight. Hence, industries in Oman can be benefitted from this.

Film casting:

The polymer is manufactured into uniform, greater films or thin layers using a customised extrusion procedure. It is also known as film extrusion.

Mechanical Properties of PVDF Plastic

Tensile strength (at 23°C)9 – 120 MPa
Elongation at yield (at 23°C)3.5 – 40 %
Yield strength (at 23°C)4.8 – 120 MPa
Elastic modulus (at 23°C)0.03 – 17.1 GPa
Compressive strength (at 23°C)13.8 – 172 MPa
Flexural modulus (at 23°C)0.07 – 20.9 GPa
Density (at 23°C)0.7 – 1.89 g/cm3
Water absorption (at 23°C)0.01 – 0.5 %

Electrical Properties of PVDF

Dielectric strength (at 23°C)1.4 – 110 kV/mm
Dielectric constant (at 23°C)6 – 8
Surface resistivity (at 23°C)1*1010 – 1*1014 Ohm/sq

PVDF Pipe in Oman

Polyvinylidene fluoride is a fluorocarbon with a high molecular weight. PVDF pipe has abrasion resistance, dielectric properties, and unrivalled mechanical strength. These properties are maintained across a temperature range of -40º F to 250º F, with a limited utilisation range of 302º F.
It is highly resistant to bromine, chlorine, and other halogens, as well as most strong acids, aliphatics, aromatics, alcohols, and chlorinated solvents, whether wet or dry.

PVDF pipe is available in sizes ranging from 1/2″ to 6″ and in natural or red colours. High purity water, chemical products, pharmaceutical manufacturing, and UV-sensitive chemicals are typical applications.

Important Characteristics

Excellent Chemical Resistance

Socket fusion joining system with superior abrasion resistance.

Temperature ranges from -40º F to 250º F.

PVDF pipe can be used in Oman’s pharmaceutical and cosmetics industries. PVDF industrial pipes can be a substitute for stainless steel pipes and prevent rouging.

Roughing is the reddish particles with a rich iron oxide content caused by the oxidation of trace quantities of dissolved iron. While Petron Thermoplast is provided, PVDF pipes are certainly iron-free.

The Advantages of Using PVDF Pipe

PVDF is an iron-free material, and there is no need for rouging.

Passivation is not required on PVDF pipes because there is no rouging.

Maintenance is simple and inexpensive. PVDF pipe has a melting point of 178°C and can withstand steam sterilisation.

It can withstand ozone sterilisation without the need for post-sterilisation cleaning.

PVDF is the toughest fluoropolymer and has one of the highest tensile strengths in this plastic family. It even outperforms stainless steel in abrasion resistance, also known as articulation.

PVDF has excellent chemical resistance, including resistance to deionised water, high thermal stability and resistance to degradation by sunlight.

PVDF pipe has low coefficient values of slip, and microorganisms (particularly fungi and bacteria) do not grow on them.

PVDF is a highly pure material with no additives. As a result, nothing will leach out.

PVDF Fittings

It piqued people’s interest because it has the greatest piezoelectric properties of any commercial polymer. PVDF fittings items are used in both chemical tank liners and semiconductor equipment components in Oman.
PVDF pipe is used in chemical processing equipment, electrical and electronics, speciality, and energy-related applications.

PVDF is a high thermal stability fluoropolymer made from the polymerisation of vinylidene difluoride. It is highly non-reactive. PVDF fittings are a fluoropolymer-based speciality plastic material widely used in applications.

Why Use It?

Those applications require the best purity, resilience, and resistance to organic solvent, acids, bases, and heat, as well as low smoke formation during a fire. It has a simpler melt process than other fluoropolymers due to its relatively low melting temperature of around 177°C.

When compared to other fluoropolymers, it has a low density (1.78) and a low cost. It is accessible in piping products, sheets, tubing, films, plate, and as a premium wire insulator. It is frequently used in the chemical, semiconducting, medical, and defence industries, as well as lithium-ion batteries, and can be moulded, injected or welded.

In general, PVDF fittings are also available as a crosslinked closed cell foam, which is increasingly being utilised in aviation and aerospace implicational areas.

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