Chapter 16: Paint Analysis

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Pretreatment

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32 Terms

1

Pretreatment

Applied to the steel body of the vehicle to inhibit rust.

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2

Microtome

A minivice that holds a sample in place while a heavy and very sharp glass- or diamondedged knife slices off sections of a few tens of microns thick.

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3

Vehicle

Refers to the solvents, resins, and other additives that form a continuous film, binding the pigment to the surface.

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4

Enamel

A pigmented coating that has a high gloss (luminous reflectivity) when it dries.

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5

Metamerism

The condition in which two colors appear similar under one set of conditions but different under others.

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6

Lacquer

Clear or pigmented coatings that dry quickly through evaporation of the solvent.

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7

Topcoat

Form of a single- color- layer coat, a multilayer coat, or a metallic color coat; this is the layer that most people think of when they think of a vehicles color.

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8

Paint evidence

________ should be first photographed and then removed manually with nonmetallic tools, such as small wooden sticks, toothpicks, or plastic forceps.

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9

Shellac

A solution of melted lac, a resinous excretion of the Lac insect dissolved in alcohol used as a sealant, adhesive, or insulating varnish.

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10

Clearcoats

Unpigmented coatings applied to improve gloss and durability of a vehicles coating.

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11

Binder

That portion of the coating, other than the pigment, that allows the pigment to be distributed across the surface.

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12

Primer

Usually an epoxy resin with corrosion- resistant pigments; the color of the ________ is coordinated with the final vehicle color to minimize contrast and "bleed- through ..

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13

Latex

A suspension of a pigment in a water- based emulsion of any of several resins.

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14

Varnish

A clear solution of oils and organic or synthetic resins in an organic solvent.

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15

loose flakes

Lifting or prying out ________ are one of the ways to remove flakes of paint in a surface.

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16

Absorption spectroscopy

________, using a microspectrophotometer (or MSP for short), has been used to categorize and discriminate between otherwise visually similar paints.

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17

paint samples

All ________ should be clearly labeled as per origin, with drawings or photographs as documentation.

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18

Pigment

Fine powder that is insoluble in the medium in which it is dispersed; are e intended to color and /or cover a surface; they may be organic, inorganic, or a mixture.

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19

Special Purpose Coatings

Fulfill some specific need beyond protection or aesthetic improvement, such as skid resistance, water proofing, or luminescence.

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20

Architectural Paints

Household paints, and are those coatings most often found in residences and businesses.

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21

Solvents

Dissolve the binder and give the paint a suitable consistency for application.

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22

Product Coatings

applied in the process of manufacturing products including automobiles

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23

Latex

A suspension of a pigment in a water-based emulsion of any of several resins

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24

Stain

A solution of dye or a suspension of a pigment designed to color, but not protect, a wood surface

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25

Primer

usually an epoxy resin with corrosion-resistant pigments; the color of the primer is coordinated with the final vehicle color to minimize contrast and "bleed-through."

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26

Topcoat

form of a single-color-layer coat, a multilayer coat, or a metallic color coat; this is the layer that most people think of when they think of a vehicles color

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27

Scanning electron microscope

can be used to characterize the structure and elemental composition of paint layers

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28

Paint Data Query (PDQ)

run by the Royal Canadian Mounted Police (RCMP) and is the largest international automotive paint database

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29

Paint

a suspension of pigments and additives intended to color or protect a surface.

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30

Pigment

a fine powder that is insoluble in the medium in which it is dispersed; are e intended to color and/or cover a surface; they may be organic, inorganic, or a mixture.

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31

Art Paints

are occasionally encountered in forgery cases. It is somehow the same as Architectural Paints, but many artists formulate their paints, leading to potentially unique sources.

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32

Polarized light microscopy

is appropriate for the examination of a layer structure as well as the comparison and/or identification of particles present in a paint film including, but not limited to, pigments, extenders, additives, and contaminants.

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