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EL-Lene H112PC PE Compound for Pressure Pipes

Since ancient Roman aqueducts, water management has been continuously developed to become pipeline system and plastic appeared as the rising star material. With benefits of lightweight and flexibility, plastic was first used for pipes in the early 1950s, with continuous development of higher strength all along since then. Starting with PE63, the first generation of HDPE pipe material, followed by PE80 with an improvement of pressure resistance, the plastic pipe industry is now in the era of PE100, the third generation of HDPE pipe that was significantly developed in its key properties. In the present, PE100 is used to convey various types of flowing substances including water, gas (fluids), and slurries.

In 2014, SCG Chemical Co, Ltd. has successfully developed EL-Lene H112PC, an innovation with higher pressure with an MRS of 11.2 MPa. Our own developed polymerization process and special catalyst were selected to produce this advanced material, resulting in PE112 with no knee that perform beyond current conventional PE100.

Benefits of EL-Lene H112PC

Benefits of EL-Lene

1. 10% higher Strength
From regression curve, EL-Lene H112PC shows LPL value of 11.3 MPa at 20°C which is more than 11.2 MPa. Moreover, no knee point was shown on the regression curve in every temperature testing. This material thus has minimum requirement strength, MRS rating 11.2 MPa @ 50 years, and is classified as PE112.

Test result of long term hoop stress of EL-Lene H112PC materialFigure A: Test result of long term hoop stress of EL-Lene H112PC material

2. Better use for large thick pipe extrusion
EL-Lene H112PC can be produced in a wide range of pipe diameters with same processing parameters as conventional PE100. It is highly recommended for very thick wall and large diameter pipes.
With special design of high molecular structure portion, EL-Lene H112PC can resist sagging behavior better than conventional PE100. It is also easier to run with less die gap compensation setting and result equal wall thickness (no sagging).

3. Efficient processing and productivity
EL-Lene H112PC and EL-Lene H1000PC show close viscosity at extrusion shear rate, so they can use same processing parameters (Figure C). In a single screw extruder, melting occurs primarily as a result of viscous dissipation (or shearing) of polymer. EL-Lene H112PC can drive from screw to front of the die more than the case of PE100, resulting in higher output /throughput up to 10% in 315 and 800 mm OD. (Figure D).

 Sagging resistance performance for large and thick wall pipe productionFigure B: Sagging resistance performance for large and thick wall pipe production

Viscosity at extrusion shear rate of EL-Lene H112PC and EL-Lene H1000PCFigure C: Viscosity at extrusion shear rate of EL-Lene H112PC and EL-Lene H1000PC

 

4. 60% superior abrasion resistance
In mining, PE pipe have been used for tailing and water management pipeline in both open pit and underground mining, which have different requirements. Tailing pipelines are used to transfer the sediment slurry; abrasion resistance property is the key benefit of PE Pipe. From real field test in mine, EL-Lene H112PC shows 60% better abrasion resistance than convention PE100.

10% higher throughput of EL-Lene H112PC compared to conventional PE100 on Pipe extrusioFigure D: 10% higher throughput of EL-Lene H112PC
compared to conventional PE100 on Pipe extrusion
Abrasion resistance comparison between EL-Lene H112PC and conventional PE100

Figure E: Abrasion resistance comparison between EL-Lene H112PC and conventional PE100

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General properties of EL-Lene H112PC

General propertys of EL-Lene H112PC

With 10% higher pressure withstanding from PE100, EL-Lene H112PC can provide additional safety factor and prolong shelf life, which can save project cost along the value chain, whether you are project owners, installers, or converters.

Furthermore, 60% improvement of abrasion resistance from conventional PE100 can help mine owners or EPCs to extend maintenance cycle which directly affect to lower maintenance cost.

Website: www.scgchemicals.com
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Link Product Pipe System: https://www.scgchemicals.com/en/products-services/market/building-infrastructure/pipe-system

Author:
Pipe Business, SCG Performance Chemicals Co., Ltd.
www.scgchemicals.com
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