PV 1306 Group Standard 2008-02 Class. No.: 55031 Descriptors: non-metallic materials, exposure test, tackiness, PP, polypropylene, plastic Non-Metallic Materials Exposure Test for Determining the Tackiness of Polypropylene Parts 1 Scope This Test Specification describes the testing and evaluation for determining the tackiness of poly-propylene (PP) parts. It relates without exception to the exposure of specimens to filtered xenon arc light in the test equipment. 2 Description Tackiness according to PV 1306 3 Test To determine the tackiness of specimens (PP plastics), 5 exposure cycles are carried out. One cycle has a load dose of 14 MJ and lasts 96 h. The specimens shall be irradiated under \"continuous\" and \"dry exposure\" equipment conditions. In the \"continuous\" test, the specimens are turned toward the light source during the entire test duration. In the \"dry exposure\" test, no water is sprayed on the specimens. The air humidity is very low. 3.1 Test equipment The following exposure equipment shall be used: Xenotest Beta/LM, Suntest XXL (made by Atlas), Q-Sun XE-3-H (made by Q-Lab) and CI 4000. To ensure comparable test results, the equipment type to be used in each particular case shall be selected in consultation with the responsible Test Laboratory in the Volkswagen Group. Check standard for current issue prior to usage. Page 1 of 4 The English translation is believed to be accurate. In case of discrepancies the German version shall govern. Numerical notation acc. to ISO practice.This electronically generated standard is authentic and valid without signature. Technical Responsibility Standards GQL-LP/3 Lutz Porzelt Tel.: +49-5361-9-75066 EKTC/4 Ute Hager-Süß Tel.: +49-5361-9-49035 GQL-LP Dr. Roger Hillert EKTC Manfred Terlinden Confidential. All rights reserved. No part of this document may be transmitted or reproduced without the prior permission of a Standards department within the Volkswagen Group. Contract partners shall obtain the standard only through the B2B supplier platform www.vwgroupsupply.com. © VOLKSWAGEN AG vwnorm-2007-07 SILON :ELLEUQPage 2 PV 1306: 2008-02 3.1.1 Parameters and test conditions for Xenotest Beta/LM equipment See Table 1. Table 1 Black standard temperature Specimen chamber temperature Relative air humidity Intensity of irradiation (measured at 300 to 400 nm) Filter system (80 ± 5) °C (45 ± 2) °C (20 ± 10)% 40 W/m2 Xenochrom 320 Replacement of radiator when no longer adjustable After approximately 1 500 h 3.1.2 Parameters and test conditions for Xenotest Suntest XXL equipment See Table 2. Table 2 Black standard temperature Specimen chamber temperature Relative air humidity Intensity of irradiation (measured at 300 to 400 nm) Filter system (80 ± 5) °C (45 ± 2) °C (20 ± 10)% 40 W/m2 Coated quartz filter and 320 nm window glass Replacement of radiator when no longer adjustable After approximately 1 500 h 3.1.3 Parameters and test conditions for Xenotest Q-Sun XE-3-H See Table 3. Table 3 Black standard temperature Specimen chamber temperature Relative air humidity Intensity of irradiation (measured at 300 to 400 nm) Filter system (80 ± 5) °C (45 ± 2) °C (20 ± 10)% 40 W/m2 Coated quartz filter and 320 nm window glass Replacement of radiator when no longer adjustable After approximately 1 500 h Page 3 PV 1306: 2008-02 3.1.4 Parameters and test conditions for Weatherometer CI 4000 See Table 4. Table 4 Black standard temperature Specimen chamber temperature Relative air humidity Intensity of irradiation (measured at 300 to 400 nm) Filter system (80 ± 5) °C (45 ± 2) °C (20 ± 10 ) % 40 W/m2 Borosilicate/soda lime Replacement of radiator when no longer adjustable After approximately 1 500 h 3.2 3.2.1 Specimen preparation Determination of tackiness Tackiness is determined on non-grained surfaces. For grained surfaces, the back of the specimen shall be exposed. Specimens measuring less than the maximum specimen size shall be attached to a piece of white paperboard. 3.2.2 Specimen size Preferably, the specimen size should conform with the maximum clampable test surfaces in the original specimen carriers. See Table 5. Table 5 Xenotest Beta/LM Xenotest Suntest XXL Xenotest Q-Sun XE-3-H Weatherometer CI 4000 3.2.3 Specimen thickness (300 x 80) mm (135 x 45) mm (135 x 45) mm (140 x 70) mm The specimens are exposed in the product thickness corresponding to their installed condition, whenever possible in the original composite thicknesses. Based on the design of the specimen carriers, the maximum thickness for all equipment types is specified at 15 mm. 3.2.4 Specimen carriers All specimen carriers shall be equipped with full-surface, rustproof carrier plates in sizes ranging from 0,7 mm to 1 mm. Non-occupied specimen carriers shall be fitted with a piece of white paper-board Page 4 PV 1306: 2008-02 3.3 3.3.1 Evaluation Evaluation bases for determining tackiness The specimens shall be evaluated immediately after removal from the test equipment, while still warm. In order to evaluate the specimens, the hands of the persons performing the evaluation shall be clean and dry. Hands that have touched a tacky specimen shall be washed and dried again in or-der to ensure an objective evaluation. Resinified specimens are recognized by the fact that they are no longer tacky from one exposure cycle to another. In this case, the specimens are marked with the identifier H (resinified). 3.3.2 Marking and status See Table 6. The specimens shall be evaluated according to the following grades/characteristics and terms: Table 6 1 S 2 3 4 H W X 3.4 Test report OK Dull (exudation, but not tacky) Slightly tacky Tacky Very tacky Resinified Waxy Test canceled, specimens cracked The results are listed in a table and rated as described in Section 3.3.2. The following information shall also be provided: a) Test equipment b) Number of exposure cycles c) Irradiation dose
