How is the Yellowing Index of Polycarbonate Determined?

Now you will understand its polycarbonate yellowing index and be familiar with its determination process.

Yellow index (YI) is a spectral information, is all natural or synthetic light resources, light and shade (white) yellow can be used as a distinguishing indicator.

In industries, it is determined in regards to "delta YI" which is represented as ΔYI.

For example, when a Polycarbonate Sheet is exposed to ultraviolet radiation, it turns yellow after a certain amount of time. This way of color modification is known as polycarbonate yellowing index.

More readily or willingly, index accessibility involves the collection of comparative measures and assessments over a given period of time.

It is important to monitor the processing of samples because some surfaces can be easily modified This inevitably leads to mistaken final thinking.

As one of the basic concepts of many industrial idioms yellow index plays an important role.

This is because they can be used to process materials that may cause yellowing.

It is used to determine the purity of compounds, etc These are some of the main reasons why the polycarbonate yellowing index is used to detect the extent to which the polycarbonate term actually weakens when exposed to artificial or natural sources that produce ultraviolet radiation.

Polycarbonate yellow variable is an important concept in the calculation of shelf life of polycarbonate sheet.

The combined safety layer extends the life expectancy of these sheets considering that they are really at risk for radiation For example, for high-performance protection, it can take a long time before the poly carbonate panels start to weaken.

Obviously there are two main yellow indices in the commercial layout, which are:

Standard test method for yellowness index of plastics ASTM d1925-70.

ASTM no. E313-73, which was approved in 1993.

There is a specific criterion that each.

That is, for the E313 test the chroma of the sample should be white or opaque, and the contrast item should have comparable transparency, texture, and gloss.

These tests are accurate, a person may not be able to do them at home because they are expensive.

It can be a tiresome process and also therefore, the majority of Polycarbonate Embossed Sheet Manufacturers will certainly conduct all the experiments and suggest all the essential details regarding the polycarbonate yellowing index in their data sheets.

Now you know this index (YI), which is a very important variable for determining the quality of polycarbonate plates.

Of course, if you want to know more about the yellow index, you'll need to know more about UV, which is what makes a panel yellow.

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