weeklypellet

New Digest 6/5/2017

Long Row of Typewriters

Aurora Plastics to buy Reinier Plastics

New polycarbonate from Sumika blocks UV radiation

Weekly Resin Report: Commodity PE and PP prices mixed

Mitsui to market new impact modifier developed by Toyota affiliate

New Digest 5/30/2017

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Borealis to build compounding plant for automotive materials in North Carolina

Clariant and Huntsman to merge

Weekly Resin Report: PE producers shock market with cut in resin prices

ExxonMobil completes installation of two new PE lines at Mont Belvieu TX plant

Bakelite documentary screened at SPE conference

Prices down for PS, PE and PET, up for PA 6/6 and PC

News Digest 5/22/2017

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Primex introduces new line of TPE materials

Weekly Resin Report: Prices weaken for most PE grades and PP

Huntsman and Clariant poised to merge

Technical Polymers is taking on parent company’s name: Domo Engineering Plastics US

Commodity material prices slam on the brakes in April

News Digest 5/16/2017

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Weekly Resin Report: Prices weaken for most PE grades and PP

Eastman debuts cellulose based engineering material

M Holland opens break-bulk facility near Mexico City

Covestro to add PC capacity in China

Nexeo sees plastics sales up 6% in Q1

Kraton set to open new HSBC plant in Taiwan

News Digest 5/8/2017

News Room

Albis breaks ground on new compounding plant

Weekly Resin Report: PE purchasing may have peaked

New PA12 from Evonik meets stringent fire protection code for rail vehicles

A. Schulman moving ahead with new product and sales strategy after “reset year”

Solid PS & PET bottle resin prices slide in April

Teknor Apex grows nylon business with new Creamid product line (yes Creamid)

NILIT completes sale of nylon division to Celanese

News Digest 5/1/2017

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Ineos Styrolution to increase ABS & ASA capacity in Mexico and announces new plant in Texas

Weekly Resin Report: PE, PP prices trending down

M Holland to build new distribution center near Chicago & Here

Nova Chemicals to pay large settlement to Dow for patent infringement

PP prices tumble 5.5 cents in April

Lanxess investing $27 million in Belgium to improve nylon production & Here

Plasticomp installs new pultrusion line to make long carbon fiber reinforced materials

Tensile Strength: Yield or Break

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Most of us in the plastic materials industry have some familiarity with the various ASTM and ISO test methods that are reported on data sheets and certificates of analysis. However, if you do a deep dive into any of the test methods, and by deep dive I mean read from stem to stern, you will find all kinds of things that you might not have thought of. Having set up and run an accredited testing laboratory in the past, I performed deep dives into many of the ASTM and ISO procedures.

Today, I want to explore one small part of the ASTM D 638 procedure for tensile properties. Before you say that you would rather drink battery acid, let me assure you that I will not dive too deep and I will leave you with some practical information and you will be able to point out a mistake on a lot of data sheets and certificates of analysis in the future.

Continue reading “Tensile Strength: Yield or Break”