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June 20, 2017
Pipeline Plastics Expands HDPE Offerings - Literally
Texas company Pipeline Plastics LLC is quite literally expanding their plastic pipe offerings with a new 65-inch HDPE pipe. Responding to market demands, the company looks to fill the growing demand for increasing water needs in agriculture and mining. Pipeline Plastics LLC, which previously had only gone as large as 24 inches in diameter, also plans on creating pipes between 24 and 65 inches noted to be needed in markets as diverse as potable water transportation and co-produced water from energy production.
Click here for Link
June 11, 2017
American Water Works Association Annual Expo 2017 in Philadelphia
This top notch show has huge exposition featuring more than 450 industry exhibitors who are showcasing the best in water industry products and services. This time, the dedicated exhibit hall hours are on Monday and Wednesday. Many of the exhibitors will be from the plastic pipe industry including Agru America, Alliance for PE Pipe, Charter Plastics, Diamond Plastics Corporation, GF Piping Systems, HARCO Fittings, Hobas Pipe USA, Integrity Fusion Products, JM Eagle, North American Pipe Corporation, NUPI Americas, Performance Pipe, Primus Line, RePipe 4710, REHAU, Specified Fittings, Uni-Bell PVC Pipe Association, and Underground Solutions.
Tips for getting the most out of the show include
Pipeline Plastics Expands HDPE Offerings - Literally
Texas company Pipeline Plastics LLC is quite literally expanding their plastic pipe offerings with a new 65-inch HDPE pipe. Responding to market demands, the company looks to fill the growing demand for increasing water needs in agriculture and mining. Pipeline Plastics LLC, which previously had only gone as large as 24 inches in diameter, also plans on creating pipes between 24 and 65 inches noted to be needed in markets as diverse as potable water transportation and co-produced water from energy production.
Click here for Link
June 11, 2017
American Water Works Association Annual Expo 2017 in Philadelphia
This top notch show has huge exposition featuring more than 450 industry exhibitors who are showcasing the best in water industry products and services. This time, the dedicated exhibit hall hours are on Monday and Wednesday. Many of the exhibitors will be from the plastic pipe industry including Agru America, Alliance for PE Pipe, Charter Plastics, Diamond Plastics Corporation, GF Piping Systems, HARCO Fittings, Hobas Pipe USA, Integrity Fusion Products, JM Eagle, North American Pipe Corporation, NUPI Americas, Performance Pipe, Primus Line, RePipe 4710, REHAU, Specified Fittings, Uni-Bell PVC Pipe Association, and Underground Solutions.
Tips for getting the most out of the show include
- Make eye contact, say hello, and ask me how my time at the event has been. Not all conversations need to be product-related.
- Have a plan, and know what you are interested in or have an existing need for. Make a list of who you want to see and make time to walk the floor.
- As you talk with exhibitors, take notes. This will help you remember everything you take-in and what you want to learn more about.
- Ask questions of the exhibitors; a brief overview of their product or service, new features, comparisons of a product you might already be aware of. If you are not interested in the product/service, be honest regarding your intentions (even if it’s just that you want some booth swag to take home to your kids/staff/dog, etc).
- Gather contact information, swap business cards (don’t forget to bring plenty) or allow exhibitors to scan your badge.
- Think beyond the immediate. As your career changes, so will your business needs. Conferences are a great place to start lasting business relationships.
June 7, 2017
New models for predicting mechanical behavior of PPR and HDPE polymers
Researchers studying PP-R and HDPE polymers have come up with a new model for finding damage reliability data. Ongoing tests of the two well-known plastic pipe materials, High Density Polyethylene and PolyPropylene, were performed in order to investigate burst pressure. In the process of doing so, they found a non-linear model that reported similar damage evolution between the pair of materials. This model allows future testers use only a static test as opposed to a dynamic one, which may lead to effective cost reductions in future damage assessments and quality assurance.
June 5, 2017
Tie Molecules - by Rich Geoffroy
Crystalline polymers, such as polyethylene and polypropylene, exist as composites of regularly-ordered, closely-packed, hard, crystalline segments in a matrix of disordered, rubbery, amorphous polymer. Chemically, the two phases of polymer are indistinguishable from each other, yet they form separate discrete phases. Not unlike other heterophasic structures, the strength of the composite is largely a function of the cohesiveness of the two phases. While there is considerable secondary bonding in the crystalline phase, the amorphous phase has too little order and too much free volume to permit any significant amount of secondary bonding to occur between the two phases for any appreciable time. Short molecular ends (cilia) in the amorphous phase do not have enough length to develop a significant amount of entanglement, and therefore, provide little resistance to separation under the slightest stress. It is possible for entangled “loose loops” to occur --- looped segments of the same molecule which initiate and terminate within the same crystalline entity, with the central portion forming a loop in the amorphous matrix. These structures, however, have a low probability of occurrence and would very likely be relatively weak. It is the molecular segment which initiates in one crystalline domain, crosses the amorphous region and, yet, has enough length to become securely locked in an adjacent crystalline phase, the so-called “tie molecule”, which provides the strength to keep the crystalline and amorphous phases from separating under even the slightest load. It is the proverbial “mortar between the bricks” which provides strength to the “composite”, semi-crystalline structure. These tie molecules are believed to be responsible for high elongation, exceptional toughness and impact resistance, and good resistance to slow-crack growth, as well as environmental stress cracking. It is thought that polymers with a higher average molecular weight have a higher likelihood of these intercrystalline linkages occurring -- therein the concept of “tie-molecule density”. This same concept can by applied to the so-called “amorphous” polymers which don’t have the clear-cut phase differences that the crystalline polymers exhibit. In the amorphous polymers, short chains readily slip past each other and can be easily separated from the polymer mass. Such a polymer would exhibit a low elongation with a characteristically low toughness and impact strength. In high molecular weight amorphous polymers, however, the extreme length of the chain causes it to get so entwined that it is difficult to pull it out of the entanglement. Thus, these long-chain molecules behave similarly to the tie molecules in crystalline polymers and provide comparable improvements in mechanical behavior. While seemingly hypothetical and scientific, the notion of tie molecules is a basic concept that needs to be understood in order to fully appreciate how polymers behave in actual use.
June 4, 2017
Abrasion Resistant PE112 Piping
SCG Chemicals has developed a new and improved polyethylene called EL-Lene(TM) H112PC and a pipe system which uses a minimum required strength rating of MRS 11.2 MPa or PE112. The new pipe offers several improvements, including being able to withstand pressure 10% higher than PE100 while offering abrasion resistance up to 40% greater than its predecessor. The piping has already been successfully deployed in the Indonesian mining industry and the company hopes to continue expanding the product.
New models for predicting mechanical behavior of PPR and HDPE polymers
Researchers studying PP-R and HDPE polymers have come up with a new model for finding damage reliability data. Ongoing tests of the two well-known plastic pipe materials, High Density Polyethylene and PolyPropylene, were performed in order to investigate burst pressure. In the process of doing so, they found a non-linear model that reported similar damage evolution between the pair of materials. This model allows future testers use only a static test as opposed to a dynamic one, which may lead to effective cost reductions in future damage assessments and quality assurance.
June 5, 2017
Tie Molecules - by Rich Geoffroy
Crystalline polymers, such as polyethylene and polypropylene, exist as composites of regularly-ordered, closely-packed, hard, crystalline segments in a matrix of disordered, rubbery, amorphous polymer. Chemically, the two phases of polymer are indistinguishable from each other, yet they form separate discrete phases. Not unlike other heterophasic structures, the strength of the composite is largely a function of the cohesiveness of the two phases. While there is considerable secondary bonding in the crystalline phase, the amorphous phase has too little order and too much free volume to permit any significant amount of secondary bonding to occur between the two phases for any appreciable time. Short molecular ends (cilia) in the amorphous phase do not have enough length to develop a significant amount of entanglement, and therefore, provide little resistance to separation under the slightest stress. It is possible for entangled “loose loops” to occur --- looped segments of the same molecule which initiate and terminate within the same crystalline entity, with the central portion forming a loop in the amorphous matrix. These structures, however, have a low probability of occurrence and would very likely be relatively weak. It is the molecular segment which initiates in one crystalline domain, crosses the amorphous region and, yet, has enough length to become securely locked in an adjacent crystalline phase, the so-called “tie molecule”, which provides the strength to keep the crystalline and amorphous phases from separating under even the slightest load. It is the proverbial “mortar between the bricks” which provides strength to the “composite”, semi-crystalline structure. These tie molecules are believed to be responsible for high elongation, exceptional toughness and impact resistance, and good resistance to slow-crack growth, as well as environmental stress cracking. It is thought that polymers with a higher average molecular weight have a higher likelihood of these intercrystalline linkages occurring -- therein the concept of “tie-molecule density”. This same concept can by applied to the so-called “amorphous” polymers which don’t have the clear-cut phase differences that the crystalline polymers exhibit. In the amorphous polymers, short chains readily slip past each other and can be easily separated from the polymer mass. Such a polymer would exhibit a low elongation with a characteristically low toughness and impact strength. In high molecular weight amorphous polymers, however, the extreme length of the chain causes it to get so entwined that it is difficult to pull it out of the entanglement. Thus, these long-chain molecules behave similarly to the tie molecules in crystalline polymers and provide comparable improvements in mechanical behavior. While seemingly hypothetical and scientific, the notion of tie molecules is a basic concept that needs to be understood in order to fully appreciate how polymers behave in actual use.
June 4, 2017
Abrasion Resistant PE112 Piping
SCG Chemicals has developed a new and improved polyethylene called EL-Lene(TM) H112PC and a pipe system which uses a minimum required strength rating of MRS 11.2 MPa or PE112. The new pipe offers several improvements, including being able to withstand pressure 10% higher than PE100 while offering abrasion resistance up to 40% greater than its predecessor. The piping has already been successfully deployed in the Indonesian mining industry and the company hopes to continue expanding the product.
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