Test of Organic Pigment
Full shade: based on a shade concentration of 0.2% pigment. White reduction: use standard depth 1/3 (SD 1/3) as white reduction, based on the respective pigment concentration to achieve 1/3 ISD based on 5% TiO2[/accordion-item]
Heat Resistance in PVC-P
Resistance to heat was tested according to DIN 53775, soft calendered sheet were made,put the sheet in 180℃ oven for 30 minutes,and compare with sheet without heating,were assessed using the ISO 105-A03 grayscale (GS) for assessing staining, with GS 5 denoting no migration,GS 1 means poorest immigration.
Heat Resistance In Polyolefins,HDPE,PP,PS,ABS,PET,PC
Resistance to heat was tested according to DIN 12877 at SD 1/3 with 1 % titanium dioxide in the injection molding process. The values quoted are the temperature in ° C at which, after a dwell time of 5 min, a color change equivalent to a ΔE*ab = 3 (DIN 6174) is obtained.
Light fastness (HDPE and PVC-p)
Method 1:Light fastness was determined using Xenon lamp exposure tests in accordance with the equivalent test methods ISO 4892-2. The samples were assessed against the 1–8 Blue Wool Scale which 8 denoting the highest light fastness.
Method 2: Accelerate ageing testing, in accordance with ISO 105 B02,put Sample and Blue Wool Scale in xenon light which 5 times strong than sunlight, cover 1/2 of sample and Blue Wool Scale, till the sample color equivalent to
ISO 105-A03 grayscale (GS) GS 3 degree,then use the Blue Wool Scale to assess light fastness from 1-8.
Fastness to Migration
Migration resistance was determined in accordance with DIN 53775 by direct contact between the colored test sheet and a white, flexible PVC contact sheet. assessed using the ISO 105-A03 grayscale (GS) for assessing staining, with GS 5 denoting no migration.
Weather resistance (HDPE and PVC-p)
Weather resistance was determined using Xenon light exposure tests in accordance with the equivalent test methods ISO 4892-2, assessed using the ISO 105 grayscale (GS) for assessing staining which 5 denoting no migration
Influence on the warping tendency of injection-molded HDPE articles was determined in accordance with ISO 294-4/ASTM D955. assessed using low, high, nt(not tested)