By Robert A. Charvat
This newest version of Coloring of Plastics: Fundamentals bargains an up-to-date advent to paint as a technological know-how whereas additionally supplying the root for plenty of extra technological topics. the fundamental households of colorants are defined, in addition to their homes. the cloth examines how statistical research can increase the consistency of coloured polymer creation runs in addition to the colorants used to compare the colour.
Other vital themes lined in Coloring of Plastics: Fundamentals, moment version include:
- Environmental matters and the reuse of discarded material
- Potential issues of the interplay among colorants and different additives
- Measurement details and matching, visually and instrumentally
- Techniques for incorporating colorants into polymers as compounds or concentrates
- Special impact colorants
Polymer and colorant brands, plastics compounders, and coating and artificial fiber industries will collect an better appreciation of the complicated technological matters a colorist needs to think of if a plastics coloring undertaking is to be successful.
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Example text
The spectrocolorimeter now has all the features that are needed for both accurate and precise color control. The only drawbacks to the spectrocolorimeter are its cost and complexity. Advances in optical and optoelectronic technology are quickly removing those drawbacks. In the next section, the characteristics of spectrocolorimeters will be examined in depth. 6. SPECTROCOLORIMETRY Spectrocolorimeters are a unique form of the classic analytical spectrophotometer. Several design changes and design optimization have resulted in a family of instruments that have roots in classic spectrophotometry but also possess new and unique properties.
Are the samples being viewed at the same angle? Are the samples made from the same polymer? If not, the refractive indexes of the polymers must be considered as a variable. This means the two samples may match at one angle and not at another! Is there metamerism involved? D o the samples have the same spectral curves or do they cross each other? Are the materials temperature sensitive? Are they thermochromatic? CHAPTER 3 Colorimetry, Color Specifications, and Production Tolerances by Visual and Instrumental Means Danny C.
There were no provisions for spectral plots, readouts, or transfers of the measured spectral data. Prior to this time, digital color measurements were made on traditional recording analytical spectrophotometers equipped with reflectance accessories or on abridged scanning spectrophotometers equipped with analog readouts. First, the development of holographic gratings that produced the required line structure without the imperfections of a ruling engine and thus a single grating could produce spectra without ghosts and other forms of heterochromatic stray light.
