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Breakthrough Inventions in Polymer Extrusion and Compounding Processes, Polymer Blends and the Role of Fundamental Mechanisms

Presented by: Chi-Kai Shih, Chi-Kai Shih LLC, December 9, 2009
$99.00
Description:
Vast improvements in polymer extrusion have been achieved through breakthrough innovations and inventions in fundamental mechanisms, machinery, screw and barrel design, functional operations, monitoring, and control. Discoveries in the fundamental extrusion mechanism played a major role in these inventions. Over the years, these discoveries helped identify the deficiencies existing in the original extruders, screw designs, and compounding processes, and hence initiated a variety of breakthroughs leading to the highly productive processes of today.

Review on Mechanism and Quantification of Polyethylene Discoloration

Presented by: Dr. Thoi Ho, December 3, 2009
$99.00
Description:
The discoloration of polyolefins has been extensively studied. The key mechanism of discoloration includes oxidation of polyethylene and/or oxidation of hindered phenolics used as antioxidants by oxygen or nitroxide pollutants from hydrocarbon combustion, e.g., internal combustion engines, or methane- or propane-fired heating systems.

Elimination of Defects From Injection-Molded Parts via Screw Modifications

Presented by: Mark A. Spalding, The Dow Chemical Company, December 2, 2009
$99.00
Description:
Many defects in injection-molded parts are caused by improper screw designs. Elimination of defects and optimization of the process can often be achieved via simple modifications to the screw. In a case study described in this presentation, a splay defect was caused by a screw with a low compression ratio, regions where resin can stagnate and degrade, and a limited melting capacity. Modifying the screw eliminated the defects, decreased the cycle time by 8%, and increased the plant capacity by 14%.

Pricing for Profitability - Activity-Based Pricing for Competitive Advantage

Presented by: John Daly, Executive Education, Inc. and Craig S. Carrel, Team 1 Plastics, November 5, 2009
$99.00
Description:

    John Daly will present the first section, which will focus on the theory of activity-based pricing.

Morphology and Properties of Exfoliated Graphene/Thermoplastic Nanocomposites

Presented by: Chris Macosko, University of Minnesota, November 18, 2009
$99.00
Description:
Graphite has attracted attention as a reinforcement for polymers because of its ability to modify electrical conductivity and the mechanical and gas-barrier properties of host polymers, and its potentially lower cost than carbon nanotubes. If graphite can be exfoliated into atomically thin graphene sheets, it is possible to achieve the highest property enhancements at low loadings. However, exfoliation of graphite via conventional composite-manufacturing strategies is challenging.

Value of NOR HALS in UV Stabilization for Automotive Applications

Presented by: Dr. Nikolas Kaprinidis, Ciba Corporation, October 15, 2009
$99.00
Description:
Polypropylene and thermoplastic polyolefin (TPO), widely used in the automotive industry, require stabilization systems to retain mechanical properties and aesthetics during processing and end-use applications. Several other important attributes can be affected by the choice of stabilization systems. This webinar compares the performance of various stabilizers in meeting weathering requirements and in other attributes important to interior and exterior applications.

A Formulation Study of Long-Fiber Thermoplastic Polypropylene (Part 2): The Effects of Coupling Agent Type and Properties

Presented by: Creig Bowland, PPG Industries, October 21, 2009
$99.00
Description:
The relationship between the resin and fiber properties in polypropylene long-fiber thermoplastics is further analyzed in the second part of this work. The properties of the maleic anhydride–grafted polypropylene additives (coupling agents) are studied, and correlations between the maleic anhydride content, melt flow, and base polymer are presented. Various samples of polypropylene long-fiber thermoplastic pellets (PP GLFT and PP DLFT) were compounded with various coupling agents. The materials were then molded and tested for normal mechanical properties.

Effect of Sparse Long-Chain Branching on Rheology and Processing

Presented by: Donald G. Baird, Virginia Tech, October 14, 2009
$99.00
Description:
The effect of sparse long-chain branching, LCB, on the rheology and associated processing behavior of polymers is distinctly different from the effect of broadening the molecular weight distribution (MWB). A brief review of sparse LCB and its effect on rheology and processing performance is presented first. Then, we focus on the degree of film-width reduction or necking during film-casting for several metallocene-catalyzed high-density polyethylenes with varying degrees of sparse LCB.

Practical Techniques for Successful Purging

Presented by: Frank Van Haste, NOVACHEM, September 2, 2009
$99.00
Description:
By drawing on an unsurpassed base of experience in the production and application of purging products for thermoplastics processing, the presenter can provide many practical suggestions for getting the most out of purging products and for efficiently overcoming purging challenges. This webinar will discuss:

Quantifying Biobased Carbon Content

Presented by: Darden Hood, Beta Analytic Inc., September 16, 2009
$99.00
Description:
ASTM-D6866 documents the renewable carbon content (a.k.a. biobased carbon content) of plastics, liquids, and gases. Composite carbon components of renewable and fossil origin within plastic or any of its originating components are readily identified and conveyed with a single number result (e.g. 65% biobased). Both state and federal regulators have embraced the method as a means for identifying biobased carbon within manufactured products, raw materials, and even carbon-neutral CO2 emissions from stationary emission sources.

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