Analytical Services

The Analytical Services laboratories exist to provide a specialized testing service.

What Do We Do?

The Analytical Services laboratories exist to provide a specialized testing service to the other sections within Technical as well as Quality Control, Production, BEAT, Sales & external customers. 

a.Analytical & Wet Chemistry Laboratory 

The nature of the work that we undertake here is varied but can be grouped under a few headings.

  1. Identifying the components used in manufacturing polyester resins. These are often ‘competitive’ products.
  2. Checking that the composition of products is correct. This is sometimes needed to confirm that a competitive material is what it is claimed to be. 
  3. Examining experimental materials to see if they have turned out as expected. 
  4. Measuring the levels of components that may change during processing or checking that the correct amounts of the components have added.
  5. Confirming the degree of crosslinking of cured polyester systems by measurement of the residual styrene.
  6. Checking the quality of raw materials used in production and confirming that they conform to specification.
  7. Developing new methods / techniques of analysis.
  8. Testing effluent and storm water samples generated on site to ensure that the COD and pH values are within acceptable limits prior to discharge.
  9. Receiving, inspection & testing standard raw materials to the requirements of Procedure 3.07 Part A of ISO 9002.
  10. Approving alternative raw materials & suppliers.

How Do We Do It?

We use a variety of techniques and instruments to do above testing.

  1. FTIR Spectroscopy uses infra-red light which is of a longer wavelength than which we can see directly, and gives a spectrum (fingerprint) which can provide a lot of information about the chemical groups present in the sample. FTIR is a very quick technique and requires minimal or no sample preparation.
  2. Gas Chromatography (GC) is a separation technique whereby the components of the sample are vaporized into a stream of gas and separated into their various types. They are then timed and measured as they elute from the instrument. 
  3. Gel Permeation Chromatography (GPC) is a technique that separates chemical compounds on the basis of their size & hence the molecular weight distribution (MWD) of a polymer can be determined. 
  4. Karl Fischer Titration is used for the determination of water in polyester resins. 

These techniques are largely complementary. Together they can be used to solve most of the problems presented to us.

b.Mechanical Testing

Mechanical testing is a critical step in the development of composite products and for certification by government and other regulatory bodies. Results from mechanical testing enable specifiers to select composite materials that will best withstand service conditions products must endure.

We have a universal testing equipment that subjects materials to tension, compression, or bending forces. These destructive testing techniques provide valuable data on materials used in a wide variety of applications including construction, automotive, mining and many other applications.

NCS Resins can conduct standardized mechanical tests such as tensile, elongation, flexural, compressive, impact, lap-shear, punch shear, peel tests, hardness tests, heat distortion temperature, flammability and burn off tests in accordance with applicable industry, national and international standards such as ASTM, ISO, BS, SANS & LLOYDS.

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