Plastic Pipes Conference Association # 2008 Budapest
Michie, Chang, Whited
The first NA produced bimodal MDPE pipe resin developed through unique molecular architecture offers significantly better resistance to slow crack growth and rapid crack propagation than traditional unimodal PE2708 / PE2406 products. This high performance resin extrudes well on conventional equipment, has good melt strength, and the pipes made can be cross-fused to various pipe grades commonly available on the market. Details in performance properties of this PE 2708 / PE80 resin will be discussed in this paper.
Related papers
Author(s) : Liang Yu, Akshay Ponda, Dane Chang
Following the development of US shale oil and gas production since 2007, the demand for thermoplastic pipes with better corrosion resistance, and lower installation and operation cost than carbon steel pipe, has been growing significantly. Nylon 12 has been qualified for hydrocarbon transportation in offshore...
Author(s) : Adriana Velasquez, Dr. Dane Chang, Dr. Siddharth Athreya
This paper studies the PENT results and how they vary based on sample preparation, equipment used, technique to place the sample as well as the number of heating cycles that the resin goes through after it leaves the manufacturing facility including those cycles needed to pre-compound virgin resin with a color...
Author(s) : Cliff Mure, Siddharth Athreya, Dane Chang, Rujul Mehta
New generations of PE100 and PE4710 pressure pipe materials exhibit a superior balance of mechanical properties. The slow crack growth performance of these materials measured by traditional tests such as PENT and FNCT can exceed one year. Accelerated test methods, including strain hardening modulus, accelerated FNCT,...
Author(s) : Lonnie Corley, Dane Chang, Harvey Svetlik, Matt Brandes, Thomas Musto, Frank Schaaf, David Fink
This paper presents a brief overview of a challenging project at the Callaway Nuclear Power Plant where HDPE was utilized to replace degraded steel buried piping in a Safety Related water system. Callaway was the first Nuclear Power plant to obtain NRC approval and successfully place the HDPE piping system into...
Author(s) : Dane Chang, Carl Baker
Due to its flexibility, toughness, and good resistance to corrosion and abrasion, polyethylene pressure pipe has been widely used for several decades in a variety of applications, including gas and water distribution, oil and gas gathering, and many industrial pipe segments. A significant limitation for polyethylene...
Author(s) : Dr. Gene Palermo, Dr. Dane Chang, Dr. Jimmy Zhou
The scope of this paper is to provide information for the plastic piping industry on a test methodology that could determine the design life of heat fusion fittings and joints at the end user field conditions of operating stress, operating temperature and desired design life. This methodology is useful not only for...
Author(s) : Dr. Z. Jimmy Zhou, Dr. Dane Chang
External flaw could be introduced into pipe wall during the transportation, installation and service processes of polyethylene pipe. The performance of non-flawed pipe is well addressed by both the standard stress extrapolation methods specified in ASTM D 2837 and ISO 9080. However, there are very limited data for...
Author(s) : Dr. Dane Chang, Dr. David Marshall, Chris Cox
Plastic pipe applications often require polymers to have adequate abrasion resistance during usage. Although typical polyethylene resins have reasonably good resistance to abrasion and can be broadly used with a variety of chemicals, there are some demanding applications that require a resin with enhanced abrasion...
Author(s) : Dongmei Zhe, Ruoqi Wei, Chang Liu, Ye Hua, Yu-e Li
The statistic data of the consumption of polyethylene pipe materials in China has been shown in this paper. The developing trend of polyethylene pipe materials in the following 5 to 10 years in China has been studied and the predicting data of the consumption of polyethylene pipe materials in China has been shown in...
Author(s) : Michie, Chang, McNeil
PE-100 pipe resins, through different molecular architecture, have significantly higher performance properties than traditional chrome (Cr) catalyzed products. Improvements in slow crack growth (SCG), rapid crack propagation (RCP) as well as excellent high temperature burst performance expand the performance...
Author(s) : Chang, Zhou, Michie
MTD Pipeline LLC is a joint venture between Martin Marietta Magnesia Specialties LLC and The Dow Chemical Company. A nearly 30 miles of high density polyethylene (HDPE) pipeline project in northern Michigan is serving as the latest example of technology evolution for polyethylene (PE) pipe used in underground pipe...
Author(s) : Zhou, Chang
High density polyethylene (HDPE) pressure pipe may be scratched during installation. The scratches reduce the wall thickness and therefore increase the dimension ratio (SDR pipe). 1” SDR 11 pipe samples extruded from bimodal PE100/PE4710 and unimodal PE80/PE3408 pipe materials were used to investigate the effect of...
Author(s) : Palermo, Michie, Chang