ASTM D789 PDF

D – 04 Standard Test Method for Determination of Relative Viscosity of Polyamide (PA), Brookfield viscosity, density of nylon polymer-formic acid solution. Relative Viscosity of Polyamide (Brookfield Method) ASTM D, D Determination of Relative Viscosity of Polyamide (PA) (Brookfield Method) ASTM D Scope: Karl Fischer is used to determine the water content of samples. It can be more accurate than simple weight loss because in the weight loss method.

Author: Yozshugis Gotilar
Country: Spain
Language: English (Spanish)
Genre: Video
Published (Last): 19 May 2015
Pages: 231
PDF File Size: 9.56 Mb
ePub File Size: 2.74 Mb
ISBN: 650-7-75525-383-6
Downloads: 40198
Price: Free* [*Free Regsitration Required]
Uploader: Sharn

Knowledge of the moisture content can be important since some polymers degrade when molded wet resulting in reduced properties.

Also, hygroscopic materials like nylon absorb moisture and knowledge of the water content can be important in understanding performance.

Need help or have a question? Also, molded parts can be compared to original resin to determine the extent of degradation from the molding process since degraded material would be lower in viscosity as a result of reduced molecular weight.

Testlopedia – The Plastics Testing Encyclopedia. d7889

Relative Viscosity of Polyamide (Brookfield Method) ASTM D, D

The time and temperature values are arrived at by testing a similar material and varying the temperature and sstm time independently to determine optimal conditions for removal of all water in the sample. Testing Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards. Global Reach Intertek is the industry leader with over 42, people in 1, locations in over countries.

The methanol traps the water which is titrated to an end point with a Karl Fischer reagent to determine the amount present.

  DARWIN ORTIZ CARDSHARK PDF

Whether your business is local or global, we can ensure your products meet quality, health, environmental, safety, and social accountability standards for virtually any market around the world. The water in the sample is vaporized and carried by dry oxygen free nitrogen into a reaction vessel with methanol.

Send us a request Need help or have a question? This is a sensitive method for material characterization because flow behavior is responsive to molecular weight and molecular weight distribution.

It can be more accurate than simple weight loss because in the weight loss method volatiles other than water can be lost which is translated into an artificially high water content. Assurance Testing Inspection Certification. Moisture Content by Karl Fischer. If the wstm is too low or the retention time too short all of the water might not be driven off. The Brookfield Viscometer determines viscosity by measuring the force to turn the spindle in the solution at a given rate.

Viscosity is the property of resistance to flow exhibited within the body of a material at a given shear rate. To request a sstm for this test or others Click Here. A temperature value too high can degrade the polymer and actually generate water in some cases.

One to three grams.

Moisture Content by Karl Fischer

A small weighed sample is placed into the Karl Fischer drying oven at a predetermined temperature for a predetermined period of time. Water content in percent or parts per million is determined. Standards can be obtained from appropriate standards authorities. Formally confirming that your products and services meet all trusted external and internal standards.

Assurance Enabling you to identify and mitigate the intrinsic risk in qstm operations, supply chains and business processes. Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards.

  EXULTET SHORT FORM PDF

The prepared solution is placed in the Brookfield Viscometer and a proper speed is selected for the spindle according to the expected viscosity of the sample.

Moisture Content by Karl Fischer ASTM D

Formic acid is added to an eight ounce screw cap bottle filled with Certification Formally confirming that your products and services meet all trusted external and internal standards. Standards can be obtained from appropriate standards authorities.

Inspection Validating the specifications, value and d879 of asmt raw materials, products and assets. Due to copyright restrictions, we are not able to provide copies of standards. Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes.

Relative Viscosity of Polyamide (Brookfield Method) ASTM D789, D4878

Through our network of over 43, people in 1, laboratories and offices in countries, Intertek provides quality and safety solutions to a wide range of industries around the world. Auditing Consulting Sourcing Training. Due to copyright restrictions, we are not able to provide copies of standards. Validating the specifications, value and safety of your raw materials, products and assets.

Send us a request Wilton UK: Flow behavior is an indirect measure of product dd789 and quality where materials must be consistent from batch to batch. Karl Fischer is used to determine the water content of samples.