Stain-Resistance Tests

Stain resistance test Geon DuraCap BF Goodrich Specimen NEMA LO-1-2.05 Geon 86103, Geon 83974 and Geon 86101 DuraCap capstock compounds... 

Orange Juice 9 No effect Stain resistance test Geon DuraCap BE Goodrich Specimen ... 

Stain-resistance tests have two different objectives (1) to control the quality of the soil-resist treatment, to assure that specifications are met and control the proper operation of the application process, and (2) to evaluate the effectiveness of developmental stain-resist systems. Whereas quality control requires mainly a pass or no-pass result, quantitative data are needed for research and development. Small differences in stain resistance reveal trends related to variation of the stain-resist agent structure, active concentration, and application conditions. Hence, the objectives of stain-resist tests can be quite different. 

The design of a stain-resistance test has to deal with two problems how to (1) apply the test stain to the carpet in a realistic and reproducible manner and (2) to evaluate or measure the resulting coloration of the carpet. 

Fig. 14.11 AATCC stain-resistance test. (Reproduced with permission from Ref.

The precision of the stain-resist test can be improved by (1) improving the stain-application procedure and (2) colorimetric measurement of the stain on the carpet. The instrumental measurement of stain on carpets is complicated by the geometry of the pile and orientation effects on the reflectance [88,89]. Laughlin and Lynch [88] have shovi n that compaction of the carpet pile affects the observable and measurable coloration. Therefore, Kissa [90] developed a colorimetric method that positions the carpet sample face-down onto a sample holder on top of... 

The amount of dye sorbed as a function of stain resistance is shown in (Fig. 14.13). The precision of the stain resistance test measuring dye sorption by the depletion technique was determined using eight replicate samples of a white level-loop carpet, treated with a small amount of a stain resist agent. The average dye sorption was 60.9% (2.40 mg/g) and the standard deviation was found to be... 

The cleanability of a coating is generally assessed by stain resistance or scrub tests. In the stain resistance test, the coating is allowed to dry for a specified time (usually a week) and then common staining materials such as coffee, tea, frait juice, mustard. 

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