1、A.C.N. 006 893 232 HOLDEN LIMITED ENGINEERING DEPARTMENT MATERIAL SPECIFICATION NUMBER SHEET RELEASE REVISION : HN 2430 1 of 4 April, 2003 June, 2003 NAME: SURFACE PREPARATION PRIOR TO PAINTING OF EXTERIOR POLYPROPYLENE / EPDM PLASTIC PARTS THIS DOCUMENT MUST NOT BE REPRODUCED. IF USED IN RELATION T
2、O THE COMPANYS PRODUCTS THE RECIPIENT IS RESPONSIBLE TO CONFIRM THE DOCUMENT ISSUE DATE IS STILL VALID. FORM : I:CentralLaboratoryStandardForms MaterialSpecificationMatspec.doc 1. INTRODUCTION This specification covers the minimum performance and processing requirements for the approval of surface p
3、reparations used for exterior polypropylene/EPDM plastic mouldings painted by HPO(Holden Plastics Organisation). The materials and processes used in surface preparation must be qualified as a full system. 2. REFERENCES HN 2431 HN 1000 3. APPLICATION 3.1 Surface preparation for general use on exterio
4、r polypropylene/EPDM parts. 3.2 Polypropylene/EPDM substrates used for testing and approved to this specification shall be as specified on the part drawing. 4. GENERAL REQUIREMENTS 4.1 Full System Approval A full system is defined by the types of chemicals, paint and their combinations to be used in
5、 the surface preparation and painting process. 4.2 Paint Materials and Process As nominated for each approved paint source. 4.3 Minimum In-Process Testing The process used to clean components shall be such that the subsequent painted part conforms to all requirements of HN 2431. In-process testing t
6、o ensure conformance shall be the responsibility of the supplier. A.C.N. 006 893 232 HOLDEN LIMITED ENGINEERING DEPARTMENT MATERIAL SPECIFICATION NUMBER SHEET RELEASE REVISION : HN 2430 2 of 4 April, 2003 June, 2003 NAME: SURFACE PREPARATION PRIOR TO PAINTING OF EXTERIOR POLYPROPYLENE / EPDM PLASTIC
7、 PARTS THIS DOCUMENT MUST NOT BE REPRODUCED. IF USED IN RELATION TO THE COMPANYS PRODUCTS THE RECIPIENT IS RESPONSIBLE TO CONFIRM THE DOCUMENT ISSUE DATE IS STILL VALID. FORM : I:CentralLaboratoryStandardForms MaterialSpecificationMatspec.doc 4. GENERAL REQUIREMENTS (continued) 4.4 General Processin
8、g Requirements i) Surface preparation (cleaning) must be performed prior to all painting operations. Handling after surface cleaning is not allowed. ii) The surface shall exhibit a continuous water film (water break free) immediately after the final deionised water rinse (DI) and before drying. iii)
9、 After the final dry off, the surface shall be free of water spots and other visible surface contamination. 4.5 Minimum Processing Conditions Stage Function Time of Stage (s) Concentration (%) Temperature (C) Pressure (psi) Conductivity (S) 1 Preclean 30 - amb - 67 10 - 30 - 2 Chemical Wash 60 1-5 5
10、7 67 10 - 30 - 3 Recirc Rinsing 60 - amb 60 10 - 30 - 4 Recirc Rinsing 60 - amb 60 10 - 30 30 0.03-0.07 amb 40C 10 - 30 10 5A Virgin DI Rinse with Rinse Aid Double Halo 0.03-0.07 amb 10 - 30 5 Note: The pH of the virgin DI rinse must be 5.0 - 7.0. A.C.N. 006 893 232 HOLDEN LIMITED ENGINEERING DEPART
11、MENT MATERIAL SPECIFICATION NUMBER SHEET RELEASE REVISION : HN 2430 3 of 4 April, 2003 June, 2003 NAME: SURFACE PREPARATION PRIOR TO PAINTING OF EXTERIOR POLYPROPYLENE / EPDM PLASTIC PARTS THIS DOCUMENT MUST NOT BE REPRODUCED. IF USED IN RELATION TO THE COMPANYS PRODUCTS THE RECIPIENT IS RESPONSIBLE
12、 TO CONFIRM THE DOCUMENT ISSUE DATE IS STILL VALID. FORM : I:CentralLaboratoryStandardForms MaterialSpecificationMatspec.doc 5. TESTS 5.1 Test Program Test panels of nominal dimensions 100 x 100 x 2.5 mm injection moulded from the polypropylene/EPDM grade shown on the part drawing are to be prepared
13、 as follows. i) Age all test panels for 72 hours ambient before testing unless otherwise specified. ii) Prepare panels per cleaning variables listed in the table below. Cleaner Rinse Aid Prep Conc. Temp Time Conc. Time 1 1 % 50 30 0.3 20 2 5 % 67 90 0.07 60 3 1 % 50 30 0.07 60 Deviations to the abov
14、e variables may be granted per written authority from the responsible Paint Materials Engineer. iii) Paint and test panels according to HN 2431. Note: Two colours, Red Mica and Lt Metallic are to be used. In an effort to conserve panels, multiple tests may be performed on one panel where feasible. 6
15、 APPROVAL SUBMISSION 6.1 Surface Preparation Materials Submission should include a completed Materials Data Sheet and a Materials Safety Data Sheet for all materials required for the system. At approval, no change in formulation or process parameters shall be made without Materials Engineering appr
16、oval. A.C.N. 006 893 232 HOLDEN LIMITED ENGINEERING DEPARTMENT MATERIAL SPECIFICATION NUMBER SHEET RELEASE REVISION : HN 2430 4 of 4 April, 2003 June, 2003 NAME: SURFACE PREPARATION PRIOR TO PAINTING OF EXTERIOR POLYPROPYLENE / EPDM PLASTIC PARTS THIS DOCUMENT MUST NOT BE REPRODUCED. IF USED IN RELA
17、TION TO THE COMPANYS PRODUCTS THE RECIPIENT IS RESPONSIBLE TO CONFIRM THE DOCUMENT ISSUE DATE IS STILL VALID. FORM : I:CentralLaboratoryStandardForms MaterialSpecificationMatspec.doc 6. APPROVAL SUBMISSION (continued) 6.2 Quality Plan - Paint Material A quality plan detailing testing to ensure confo
18、rmance to specification of production material to be submitted by the paint supplier at approval of the paint materials. 7. APPROVAL, INSPECTION AND REJECTION Refer HN 1000, Clauses A and C. 8. RESTRICTED CHEMICALS Refer HN 1000, Clause J. 9. REVISIONS June, 2003 - Numbering correction. In the April 2003 release of HN 2430, section 5.1(iii) was incorrectly numbered 5.1(iv). - Section 4.3 and 5.1(iii); reference to HN 1659 has been replaced with HN 2431. Prepared by: Phong Nguyen
