Our site uses cookies necessary for its proper functioning. To improve your experience, other cookies may be used: you can choose to disable them. This can be changed at any time via the Cookies link at the bottom of the page.


SUSTAINABLE STABILISER SYSTEMS FOR PVC – 30 YEARS OF CA BASED SOLUTIONS

 

Dr. Stefan Fokken

# 2021 Amsterdam

NGO pressure and end of life disposal of PVC articles in the EU over 30 years ago, triggered intense discussion about the sustainable use of PVC and its additives.

Stabiliser producers and downstream users of PVC stabiliser compounds base upon Lead and Cadmium based stabilisers have developed solutions ultimately leading to full substitution.

30 years later, Europe has completely eliminated Lead use from primary PVC stabilisation additive use in all PVC including pipes and fittings where it was almost exclusively used. This replacement technology (referred to as Calcium/Zinc or Calcium Organic) is primarily based upon organic chemistry and metal carboxylates of Calcium and Zinc. This has been extended to almost all corners of the world over the past decade or so at a very high rate of acceptance, significantly, without enforced regulation or legislation being necessary. Who has selected which system and why for pipes and fittings? This presentation will present the current status.

The main driver today for choice of PVC stabiliser technology (aside of article performance against product standards) remains its total cost, taking into account all operational as well as material costs within the framework of regional chemical regulations allowing the use of chemical substances (e.g. REACh in EU).

Additionally, formulators have taken into account the sustainability of the whole system, including future substance regulation risk, end of life recyclability of the finished article as well as responsible and sustainable feedstock sourcing.

Moving forward, new product stewardship frameworks are being developed to deliver improvements to PVC additive sustainability, as promoted by Vinylplus with its ‘Additive Sustainability Footprint’, presenting new challenges and opportunities for formulators.

Changes in the reprotoxic classification for organotin stabilisers in Europe, in addition to scrutiny in other regions, is triggering downstream users to seek out similar solutions to substitute the use of Tin stabilisers.

This presentation is going to shed light on these various aspects of the current use and future selection of the chemistry of PVC stabilisers for pipes and fittings.

Related keywords : Substitution of Pb-based stabilisers, global situation for Ca-based PVC stabilisers, Regulation of Tin stabilisers, Sustainable alternatives.
Please note that the whole article content is available on PPCA website only


Related papers

2021 Amsterdam : A COST BENEFIT ANALYSIS OF PVC PIPES RECYCLING

Author(s) : A. Marangoni

The quality of infrastructures is a key driver for maximizing the performance of the utilities networks and minimizing the environmental impacts associated with their operation. The water and sewer pipes are key network elements to guarantee a satisfactory service to the citizens. Their end-of-life management is an...

2021 Amsterdam : ANALYSIS OF PVC AND CPVC BLENDS

Author(s) : Saleem Shakir

Unplasticized formulations based on Poly(Vinyl Chloride) (PVC) and Chlorinated Poly(Vinyl Chloride) (CPVC) resins offer technical solution to pressure piping systems that find extensive use in residential and industrial applications. Building upon the desirable properties of the vinyl monomer, the chlorine content of...

2021 Amsterdam : DEVELOPMENTS IN NORTH AMERICAN CONDUIT PRACTICES

Author(s) : Tom Stewart, Richard Hicks, Patrick Vibien, Lance MacNevin

Arguably, broadband technologies have become as vital to society as water delivery, waste removal and energy distribution. However, the role of plastic conduit in broadband is often overlooked within the piping industry and society in general. HDPE conduit is an essential component to the build -out of 5G cell...

2021 Amsterdam : FRACTURE MECHANICS TECHNIQUES IN LARGE DIAMETER PVC PIPES

Author(s) : Antonio Rodolfo Jr., Vanderley M. John

Unplasticised (U-PVC) and modified (M-PVC) pipes used in irrigation and infrastructure applications, outside diameter 326 mm, were evaluated according to various fracture mechanics methodologies, including fracture toughness (stress intensity factor KC and energy release rate GC, both at fracture), essential work of...

2021 Amsterdam : INNOVATIVE MILLIMETER WAVE TECHNOLOGY FOR MEASURING THE PIPE WALL THICKNESS EARLY IN THE EXTRUSION PROCESS

Author(s) : Christian Schalich

Plastic pipes for infrastructure and building applications are precisely specified with regards to wall thickness and diameter. Pipe manufacturers use different measuring methods in order to ensure the required dimensional accuracy and maintain a constant high quality. This paper introduces a measuring system based on...

2021 Amsterdam : MODELLING THE MIGRATION FROM PVC-U PIPES INTO DRINKING WATER

Author(s) : C. Losher and P.V. Mercea

In the framework of the German Environmental Agency (UBA) requirements of plastic articles in contact with drinking water (KTW-BWGL-guideline), the compliance is verified by comparing so-called “expected concentrations at tap”, C tap , of substances contained in the plastics with specific limits in drinking water...

2021 Amsterdam : PRESSURE PIPELINE MADE OF HDPE – DETERMINATION OF REMAINING LIFETIME AFTER 47 YEARS OF OPERATION IN LAKE OSSIACH (CARINTHIA, AUSTRIA)

Author(s) : Ulrich Schulte, Dr. -Ing. Joachim Hessel

In order to protect the Austrian lakes effectively against the discharge of effluent, a 13 km long pressure pipeline made of high density polyethylene was laid on the bottom of Lake Ossiach back in 1971. The DN355 to DN200 pipes were produced from a first generation HDPE-compound. The classification would have been...

2021 Amsterdam : PVC Pipes TRAINING PACKAGE: 2020 UPDATE!

Author(s) : Sylvie Famelart, Vincent. Stone

In order to deliver to the market reliable and consistent information about PVC and the different PVC pipe solutions, a Training Package was developed a few years ago. The package was made up of a set of standalone PowerPoint slides, providing information on PVC-U and PVC-C pipe systems. Information on both general...

2021 Amsterdam : PVC PIPES WITH SUPERIOR ROOT INTRUSION RESISTANCE

Author(s) : Argnani Claudio, Ing. Gianpaolo Contarini

...Clogging of the pipes can be experienced in sewer systems after a short period of service, due to the intrusion of roots from plants and trees. Plants, and in particular their roots, are attracted by the water flowing inside the pipes. These roots will strain the connections between pipes, in particular the sockets...

2021 Amsterdam : PVC-O DN800: EFFICIENT TRANSFORMATION FROM SOIL TO IRRIGATED LAND

Author(s) : Ignacio Muñoz

“Food is the new oil and gas” is a rather bold statement, but everyday more and more people are concerned about food scarcity. Bringing irrigation to not productive lands will change the lives of the community and if it can be done with a cost effective and the most ecofriendly solution, even better. This case study...

2021 Amsterdam : RECENT DEVELOPMENTS IN INTEGRAL JOINT RESTRAINTS

Author(s) : Guido Quesada

An important breakthrough for belled PVC pipe was made around 2006, when the first versions an integral joint restraint were released, after about two years in development. This type of restraint comprises a casing, usually made of metal such as ductile iron or stainless steel, a rubber seal, and a “C” grip ring,...

2021 Amsterdam : SLOW CRACK GROWTH RESISTANCE OF REPROCESSED PVC

Author(s) : Andreas Frank, Mario Messiha, Günter Dreiling, Norbert Schuler, Jens-Martin Storheil, Erwin Mayrbäurl, Stuart Ramella, Frank Krause, Rudi Berning, Philippe Gabriëls, Alpay Aydemir, Thomas Koch, Florian Arbeiter, Gerald Pinter

The Cyclic Cracked Round Bar (CRB) Test has been applied to study the slow crack growth (SCG) resistance of virgin, recycled, and reprocessed PVC-U. This fracture mechanical test allows a quick ranking of the SCG resistance of PVC-U. A clear correlation between the K-value and the SCG resistance has been elaborated....

2021 Amsterdam : TESTING AND EVALUATION OF NANOADDITIVES IN U-PVC PIPES

Author(s) : E. Boccaleri, L. Palin, G. Rombolà, M. Milanesio

In the last decades, research on nanostructured materials as additives for plastics involved several polymeric matrices, but only limited studies and publications involve PVC. In this work, the context of rigid application of PVC (U-PVC) for pipes application was targeted, in order to test and evaluate the structural...

2018 Las-Vegas : A recent survey of water main failures in the US and Canada

Author(s) : Steven Folkman

A recent survey again confirms that PVC pipe has the lowest break rate when compared with break rates of ductile and cast iron, asbestos cement, steel, and concrete pipe. Other results of interest to water utilities and engineers are discussed. During 2017, Utah State University conducted a survey of utilities across...

2018 Las-Vegas : C-PVC-O, pushing limits beyond in molecular orientation

Author(s) : Ignacio Muñoz

During the last years PVC-O has become a popular product in pipe business due to the huge improvements of mechanical properties of PVC after orientation. At the same time, CPVC has become an important choice for hot water conduits in in-house applications. Molecor has started a research program to evaluate the...

2018 Las-Vegas : Considerations when restraining molecularly oriented PVC pipe

Author(s) : G.M. Quesada, K.H. Steinbruck

The benefits of molecularly oriented PVC pipe (PVC-O) are well known and documented. Numerous studies covering improved pipe impact, toughness, hydraulics, and life cycle have been published. There is less information about PVC-O pipe under pipeline hydraulic forces. The objective of this paper is to identify design...

2018 Las-Vegas : Innovative millimeter waves technology for measuring diameter, ovality, wall thickness, and sagging of large plastic pipes

Author(s) : Christian Schalich

This paper introduces a new technology based on millimeter waves. It provides a noncontact, non-destructive, online measurement of inner and outer diameter, ovality, wall thicknesses, and sagging (sagging of the melt during solidification at a too high viscosity) of large plastic pipes during the extrusion...

2018 Las-Vegas : Longitudinal crack in large PVC-U pressure pipes. pipe gelation influence. case study iii

Author(s) : Joaquín Lahoz Castillo

Irrigation networks in Spain extensively make use of plastic pressure pipes systems. Some recent failures focus the attention on Rapid Crack Propagation phenomena. Larger high-pressure PVC-u pipes are involved in most incidences detected. The level of gelation of those pipes were measured per EN-ISO 1452-2 test...

2018 Las-Vegas : Molecularly oriented awwa C909 pipe for seismic applications

Author(s) : Richard St-Aubin, Dr. Thomas O’Rourke, Dr. Brad Wham, Blake Berger

Molecularly oriented polyvinyl chloride (PVC-O) pipe has been found to withstand large ground deformation during seismic events without damage. The properties of PVC-O pipe that support this performance have been investigated in a multi-year testing program undertaken at the Geotechnical Lifelines Large Scale Testing...

2018 Las-Vegas : New crosslinked (PEX) pipes from sustainable resources

Author(s) : Jacob John, Andrew J. Ortquist, Mats Thunwall, Patrik A. Roseen

This study investigates production of crosslinked polyethylene (PEX) pipes using a resin obtained from a renewable resource via twin-screw extruder technology. PEX pipes were extruded using petroleum-based and renewable high-density polyethylene (HDPE) for comparison. Testing using relevant ASTM standards on the new...

Members of the Association

BOREALISBOROUGEFormosa Plastics CorporationINEOS O&PIRPCKazanorgsintez PJSCKorea Petrochemical IND. Co., LTD (KPIC)LyondellBasellPetroChina Dushanzi Petrochemical CompanyPRIME POLYMERSABICSCG Chemicals & Thai PolyethyleneSinopecTASNEE
TOP