Petrochemical Product Supplier
PERT HD-95-N
Temperature Resistance Nanocomposite of Polyethylene
Description:
PERT HD-95-N is (Polyethylene of Raised Temperature Resistance) offering excellent strength. We believe no other polyethylene resin has proven to perform like Victorious PERT resin in hot water pipes without being cross-linked. Victorious PERT resin provides improved hydrostatic strength and processability over existing materials in a variety of heating/cooling systems and hot and cold drinking water supply networks. Pipes produced from the resin also offer excellent stress crack resistance, thermal conductivity, and good flexibility.
Main applications:
PERT HD-95-N Resin designed for hot and cold-water pipe applications. It is well suited for floor heating, radiator connections, snow-melt systems, heat exchangers, solar panels, heat recovery systems, hot or cold drinking water networks, plumbing, and industrial pipe. It can be used in industrial applications where conventional PE usually fails, thanks to its high strength at extreme temperatures.
Typical Characteristics
Characteristics | Value | Unit | Test Method |
|---|---|---|---|
Melt index (190°C / 5 kg) | 0.14 ± 0.02 | g/10mn | ISO 1133 |
Melting Point | 132 | °C | ASTM D3418 |
Vicat softening point | 124+/-2 | °C | ASTM D1525 |
Density | 0.945 ± 0.001 | - | ASTM D1505 |
Physical characteristics
Characteristics | Value | Unit | Test Method |
|---|---|---|---|
Tensile Strength¹ | 385+/-8 | Kg/cm² | ASTM D638 |
Tensile Strength at break¹ | 370+/-8 | Kg/cm² | ASTM D638 |
Elongation at break¹ | 450 +/-10 | % | ASTM D638 |
Impact | No break | - | ASTM D256 |
¹ Measurement done on samples prepared from compressed molded sheet ( speed test 5mm/min.)
Pipe Extrusion with PERT Polyethylene Resins
The Victorious Chemical Company is a leading producer of high-quality polyethylene (PE) pipe resins for domestic and industrial applications Victorious PERT Polyethylene.
This provides excellent stress crack resistance properties combined with very good long-term hydrostatic strength. The narrow molecular weight distribution makes extrusion of Victorious PERT, Polyethylene Resins different from that of LDPE or HDPE, which may require adjustment of the extrusion equipment and processing parameters.
Performance
Typical advantages include:
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Extrusion at high speed (up to 40 m/min) with pipe diameters from 6 to 32 mm is possible.
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Low surface roughness, indicated by high gloss, provides low head loss/ higher throughput.
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Victorious PERT, Resin meets the requirements of the national norms and regulations for hot water systems for PE.
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Victoroius PERT, PE Resins promote one of the most flexible pipes of all resins and maintain flexibility even at low ambient temperatures.
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Pipes made with Victorious PERT, Resins do not spring back or out of clamps.
Instruction of the stabilizer masterbatches:
For improving stability of PERT during Pipe production and accepted long time properties
advice to mixed 0.5 wt% of the Stabilizer Master batches which contain Irganox 1010 and Irgafos 168
(50% - %50% wt) with PERT granules.
Pipe Extrusion
To fully benefit from the inherent polyethylene properties of PERT, Resins, it is important that the proper extrusion equipment, conditions, and operating procedures be used in the extrusion of pipe from these resins. This extrusion guide will serve to assure manufacturers of pipe that their final products meet the industry standards and perform in the outstanding manner expected when using PERT, Resins.
Operating Conditions
When extruding PERT, PE Resins specifically for pipe applications, the following heater settings are suggested for a 60 mm barrel extruder with six zones and using a conventional PE screw:
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The temperature profile along the six zones should target a melt temperature of 165-220°C Example: 165-175-190-205-220°C.
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Often, with PERT, Resins, it is advantageous to run a so-called “reverse temperature profile.”This is especially recommended when a screw with a high compression ratio (3 or above) is used. Example: 180-230-245-250-260-255°C.
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For PERT, Resin, the temperature profile can be reduced by 10°C.
acupressure and Filter Packs
PERT, PE Resins are known to create higher back pressure than LDPE or HDPE. This is normal and to be expected because of the narrow molecular weight distribution. A fine screen mesh filter pack (80 mesh) is recommended. The level of the obtained back pressure is dependent on the screw design and speed, but typical pressures observed are around 200 bar.
Coloring
Ideally, color masterbatches should be based on the same PERT, Resin as specified in your application. Any pigments based with iron oxides, copper, or manganese must be avoided. Special care must also be taken with TiO2 (whitening agent); only rutile types, neutralized and coated, can be permitted.
Multilayer (Composite) Pipe
Multilayer coextrusion is standard practice in the pipe industry, typically using an adhesive polymer layer to tie inside and outside PE layers to a central aluminum tube. All PERT, Resins used for pipe applications are also ideally suited for such composite pipe applications. Specifically, PERT, Resin provides outstanding processing behavior.
Security / Precautions of use
PERT HD-95-N must be stocked in dry conditions below 50°C and protected from UV rays. Improper storage conditions can cause degradation and have consequences on the physical properties of the product.
Shell life is 2 years from the production date.