1、GM DAEWOO Auto & Technology EDS Engineering, GM DAEWOO Auto & Technology Standards ANTI CHIPPING PRIMER SURFACER EDS-M-8766 ISSUED DATE: 1998. 09. 28 REVISED DATE: 2005. 12. 21 VERSION: 8 EDS-M-8766ANTI CHIPPING PRIMER SURFACER PAGE: 1/10 ISSUED DATE: 1998. 09. 28 REVISED DATE: 2005. 12. 21 VERSION:
2、 8 GM DAEWOO Auto & Technology 1. SCOPE This standard specifies the physical properties of the primer surfacer used to improve quality of the coated surface, such as adhesion and chipping resistance.2. GENERAL PHYSICAL PROPERTIES OF MATERIAL The primer surfacer contains urethane modified polyester a
3、nd melamine resin as the base material with addition of color pigment and permits both manual application with a general air spray gun and automatic application by the electrostatic bell machine. 3. TEST CONDITIONS 3.1. Standard conditions of test place 3.1.1. The test shall basically be conducted a
4、t temperature of 202K and relative humidity of 65%5%. 3.1.2. When the above conditions cannot be met, temperature and relative humidity shall be entered on the test report. 3.2. Material condition of test piece The test piece shall basically be the finished vehicle built to the determined coating sp
5、ec, but the one built of the same material to the same spec may be used. 3.3. Baking condition 3.3.1. Test piece curing conditions shall basically be (1455)20minutes(effective time). 3.3.2. The curing time and temperature shall be based on the point when the temperature of the material to coat on re
6、aches a designated point after the test piece is put into a dry oven. 4. REQUIREMENTS 4.1. Properties of delivered material 4.1.1. Color : According to color specifications by models 4.1.2. Delivery viscosity (EDS-T-7908) (1) Ford cup #4, 20 (2) Specified value2 Sec. 4.1.3. Non-Volatile (EDS-T-7937)
7、 (1) 1202 hours (2) Specified value1.5 4.1.4. Dilution thinner : EDS-M-8766ANTI CHIPPING PRIMER SURFACER PAGE: 2/10 ISSUED DATE: 1998. 09. 28 REVISED DATE: 2005. 12. 21 VERSION: 8 GM DAEWOO Auto & Technology (1) EDS-M-8710 : Solid thinner 4.1.5. Electric resistance (EDS-T-7913, based on diluted pain
8、t). (1) Exterior primer surfacer : 3001,500 . (2) Interior primer surfacer : 5002,000 . 4.1.6. Specific gravity (EDS-T-7965, clause 7) (1) 100 cc Specific gravity cup, 20 (2) Specified value 0.02 4.2. Material condition at coating 4.2.1. Dilution viscosity (EDS-T-7908, FORD CUP No. 4 at 20) Add EDS-
9、M-8710 solid thinner to the undiluted paint to adjust to specified viscosity at 20. 4.2.2. Storage stability (undiluted solution, EDS-T-7963) (1) Check the paint condition after exposure to 50120 hours and subsequent exposure from the room temperature to 202K. (2) After storage, the paint shall be f
10、ree from gel and seeding and the viscosity increase compared to the initial state shall less than 20 Sec. (3) No abnormalities in workability and external appearance after storage stability. 4.2.3. Dilution stability. (1) No precipitation after dilution to the specified viscosity, fill it in mass cy
11、linder and subsequent exposure to room temperature for 2 hours. (2) Vessel : Mass cylinder capable of 500L 4.2.4. Coating method (1) Automatic application by the electrostatic BELL machine. (2) Manual application with a general air spray gun. 4.2.5. Film composition of the steel plate for primer sur
12、facer coating (1) Phosphate film (2) Phosphate film + EDS-M-8773(Electro coat) 4.2.6. Flash - off time Maintain approximately 8 minutes at a temperature of 4045. 4.2.7. Drying method : convection drying. 4.2.8. Drying period and temperature : Maintain 20 minutes(effective time) at 1455(based on body
13、 temperature). 4.2.9. Appearance after drying : After drying, the coated surface shall show no sign of defects, such as run or pinholes etc. EDS-M-8766ANTI CHIPPING PRIMER SURFACER PAGE: 3/10 ISSUED DATE: 1998. 09. 28 REVISED DATE: 2005. 12. 21 VERSION: 8 GM DAEWOO Auto & Technology 5. REQUIREMENTS
14、AFTER DRYING 5.1. Film thickness (EDS-T-7970) 5.1.1. Exterior primer surfacer : 3035W . 5.1.2. Interior primer surfacer : 1525W . 5.2. Hiding power (EDS-T-7914) 5.2.1. For the interior primer surfacer, which is applied for finishing of the hood and trunk resistance parts, and exterior primer surface
15、r, the practical hiding power shall not exceed 20W on the electro coating film. 5.2.2. Hiding power with the black and white sheets shall conform to the primer surfacer color characteristics as long as it does not affect work(practical hiding power shall not exceed 20W ) in the line. 5.3. Paint film
16、 composition of test piece. 5.3.1. Condition A : Phosphate film + EDS-M-8773 + EDS-M-8766. 5.3.2. Condition B : Phosphate film + EDS-M-8766. 5.3.3. Condition C : Phosphate film + EDS-M-8773 + EDS-M-8766(Exterior primer surfacer) + EDS-M-8731, EDS-M-8732. 5.4. Requirements after exposure to room temp
17、erature for 24 hours 5.4.1. Distinction Of Image / Gloss (EDS-T-7907, BYK HAZE-Gloss Meter) To be 70% min. for exterior primer surfacer, 75% min. for interior primer surfacer when measured under test piece conditions A with an angle of 60. 5.4.2. Adhesion (EDS-T-7910) (1) Tape : 3M #610 (2) Cutter :
18、 Use a cutter to JIS K 5400 or equivalent cutter (NT cutter A type is recommended) (3) Tape peel angle : 90 (4) Cutter angle : approximately 30 (5) Adhesion under test piece conditions A and C shall be GT-0 and there shall be no drop in adhesion after elapse of 4 weeks 5.4.3. Hardness (EDS-T-7948) (
19、1) Hardness under test piece Condition A shall be 80 100. 5.4.4. Cupping (EDS-T-7974) (1) Cupping under test piece Conditions A shall be more than 5.0mm and there shall be no drop in cupping after elapse of 4 weeks. (2) Cupping under test piece Conditions C shall be more than 4mm(But, there shall be
20、 more than 5mm, when EDS-M-8766ANTI CHIPPING PRIMER SURFACER PAGE: 4/10 ISSUED DATE: 1998. 09. 28 REVISED DATE: 2005. 12. 21 VERSION: 8 GM DAEWOO Auto & Technology coating under EDS-M-8732) and there shall be no drop in cupping after elapse of 4 weeks. 5.4.5. Bending (EDS-T-7912) (1) Conical corn di
21、ameter : 9.540.5X (2) Length: 212X (3) When tested under test piece Conditions A and C, there shall be no sign of surface defects, such as cracks and peeling-off. 5.4.6. Heat resistance (EDS-T-7917) When tested under test piece Conditions A at a temperature of 100 for 240 hours, adhesion shall be GT
22、-0 and no sign of film surface defects, such as blistering, peeling and discoloration etc. 5.4.7. Over baking (EDS-T-7919) (1) Baking condition : Exposure to 1602 hours after coating with EDS-M-8766. (2) There shall be no abnormalities in the film surface and adhesion shall be GT-0 after exposure at
23、 room temperature for 24 hours. 5.5. Requirements after exposure to room temperature for 72 hours 5.5.1. Salt spray resistance (EDS-T-7932) (1) Test condition : 403, 98%RH min. (2) After test under test piece Condition A and C for 480 hours, there shall be no surface changes, rusting area shall be l
24、ess than 2X and adhesion shall be GT-0. (3) After test under test piece Condition B for 144 hours, there shall be no surface changes, rusting area shall be less than 2X and adhesion shall be GT-0. 5.5.2. Humidity resistance (EDS-T-7951) (1) Humidity chamber : 403, 98%RH min. (2) After test under tes
25、t piece Condition A for 240 hours and subsequent exposure to room temperature for 24 hours, there shall be no changes on the surface as compared to the initial state and adhesion shall be GT-0. (3) After test under test piece Condition C for 240 hours and subsequent exposure to room temperature for
26、24 hours, there shall be no changes on the surface as compared to the initial state and adhesion shall be GT-1. 5.5.3. Anti-chipping (EDS-T-7945) (1) Gravel : JIS #7, 50g (2) Test temperature : Room temperature and cold temperature(-20) (3) After test under test piece Condition C, rating 8 or higher
27、 shall be ensured. 5.5.4. Impact-saline solution resistance (EDS-T-7738) (1) Gravel: JIS #7, 50g (2) After test under test piece Condition C, rating 2 or below shall be ensured. EDS-M-8766ANTI CHIPPING PRIMER SURFACER PAGE: 5/10 ISSUED DATE: 1998. 09. 28 REVISED DATE: 2005. 12. 21 VERSION: 8 GM DAEW
28、OO Auto & Technology 6. ADDITIONAL REQUIREMENTS 6.1. Sandability 6.1.1. Sanding method : Dry with sand paper #600, #800 & moisture sanding 6.1.2. Test method and criterion (1) Coat the 200300X of electro-deposition test piece as the specified film thickness base on relevant external primer surfacer,
29、 and dry it with normal conditions. (2) Sanding Method #600 dry sanding Normal Coating #800 dry sanding #600 moisture sanding Normal Coating #800 moisture sanding (3) After removing the foreign matters on the test piece, coat with top coating(black color) and dry it. (4) Criterion : No problems at s
30、anding, no difference in gloss between the sanded surface and normal surface after top coating and no noticeable sanding marks. 6.2. Circulation stability After storage inside the paint circulation system under the conditions identical to the line conditions for 6 weeks, there shall be no deformatio
31、n or marked increase in viscosity and good workability shall be provided. 6.3. Workability 6.3.1. Perform the comparative test with mass production color in principle. 6.3.2. Sagging limits (1) Perform the resistance impact onto the 300500X test piece coated with electro-deposition at 5cm intervals,
32、 with 1/2INCH500g of weight. (2) At this moment, mark the center of hole by impact with oiliness pen. (3) Remove the masking tape after application of relevant primer surfacer uniformly and set the test piece vertically for 5 minutes in order that the masking areas shall be to go down an underside,
33、and then dry it. (4) Apply the test piece with uniform extrusion volume of gun when the comparative tests. (5) Criterion : Measure the film thickness where the sagging of oiliness pen from a center of hole shall be 5cm. This point is called as the film thickness of sagging limits. 6.3.3. Pinhole lim
34、its (1) Apply the relevant primer surfacer onto the 300500X test piece coated with electro-deposition, and 5Y Masking tape EDS-M-8766ANTI CHIPPING PRIMER SURFACER PAGE: 6/10 ISSUED DATE: 1998. 09. 28 REVISED DATE: 2005. 12. 21 VERSION: 8 GM DAEWOO Auto & Technology subsequent dry it after setting 5
35、minutes. (2) Measure the film thickness of the pinhole portion after drying. 6.3.4. Over spray dust (1) Apply the relevant exterior primer surfacer to test piece, and perform the over spray dust of interior primer surfacer according to the line condition or equivalent. (2) Dry it after setting at ro
36、om temperature for 10 minutes after over spray dust. (3) The surface shall show no signs of cratering, loss of gloss or other surface defects after drying. 6.3.5. Cratering stability (1) Dilute paint with specified viscosity, and stir it with a stirrer for 4 hours at the room temperature. (2) The su
37、rface shall show no signs of cratering, when the top coat is applied after stirring. 6.3.6. Electrostatic painting performance (Exterior primer surfacer) When observed following electrostatic painting under the condition equivalent to the line condition, the surface shall show no signs of abnormalit
38、ies. 6.3.7. Compatibility with PVC sealer When applying the relevant primer surfacer to sealers, and examining the condition of adhesion, the surface shall show no signs of defects and the adhesion shall be GT-0. 7. EFFECTIVE PERIOD Effective period of the paint shall be 6 months from the date of ma
39、nufacturer and at delivery the paint shall be free from severe sedimentation or non-soluble masses. 8. MATERIAL APPROVAL Part NO. Old P/NO. Approved Supplier Approved Raw Material Remarks 94545546 M-8766-A DONGJU Industrial Co., Ltd - 94545547 M-8766-B DONGJU Industrial Co., Ltd - 94545548 M-8766-N3
40、5 DONGJU Industrial Co., Ltd APC613 94545549 M-8766-N65 DONGJU Industrial Co., Ltd APC612K 94545550 M-8766-N90 DONGJU Industrial Co., Ltd APC742K 94545551 M-8766-P10 DONGJU Industrial Co., Ltd APC741K 94545552 M-8766-P13 DAC Co., Ltd PKE706801 94545553 M-8766-P20 DONGJU Industrial Co., Ltd - 9454555
41、4 M-8766-P30 DONGJU Industrial Co., Ltd APC530 94545555 M-8766-P37 DONGJU Industrial Co., Ltd - 94545556 M-8766-P40 DONGJU Industrial Co., Ltd APC440 94545557 M-8766-P42 DONGJU Industrial Co., Ltd - 94545558 M-8766-P45 DONGJU Industrial Co., Ltd - 94545559 M-8766-P50 DONGJU Industrial Co., Ltd APC35
42、0 EDS-M-8766ANTI CHIPPING PRIMER SURFACER PAGE: 7/10 ISSUED DATE: 1998. 09. 28 REVISED DATE: 2005. 12. 21 VERSION: 8 GM DAEWOO Auto & Technology Part NO. Old P/NO. Approved Supplier Approved Raw Material Remarks 94545560 M-8766-P60 DONGJU Industrial Co., Ltd APC360 94545561 M-8766-P62 DONGJU Industr
43、ial Co., Ltd - 94545562 M-8766-P64 DONGJU Industrial Co., Ltd - 94545563 M-8766-P65 DONGJU Industrial Co., Ltd - 94545564 M-8766-P69 DONGJU Industrial Co., Ltd - 94545565 M-8766-P73 DONGJU Industrial Co., Ltd - 94545566 M-8766-P74 DONGJU Industrial Co., Ltd - 94545567 M-8766-P80 DONGJU Industrial Co
44、., Ltd APC711 94545568 M-8766-P81 DONGJU Industrial Co., Ltd - 94545569 M-8766-P83 DONGJU Industrial Co., Ltd APC683 94545570 M-8766-P93 DONGJU Industrial Co., Ltd APC615 94545608 M-8766-P26 DONGJU Industrial Co., Ltd APC526 94545609 M-8766-P31 DONGJU Industrial Co., Ltd APC531 94545610 M-8766-P34 D
45、ONGJU Industrial Co., Ltd APC434K 94545611 M-8766-P35 DONGJU Industrial Co., Ltd APC435 94545612 M-8766-P36 DONGJU Industrial Co., Ltd APC436 94545613 M-8766-P44 DONGJU Industrial Co., Ltd APC444 94545614 M-8766-P68 DONGJU Industrial Co., Ltd APC868 94545615 M-8766-P70 DONGJU Industrial Co., Ltd APC
46、115K 94545616 M-8766-P82 DONGJU Industrial Co., Ltd APC681 94545617 M-8766-P87 DONGJU Industrial Co., Ltd APC787K 94545618 M-8766-P92 DONGJU Industrial Co., Ltd APC892 94545619 M-8766-P95 DONGJU Industrial Co., Ltd APC695 94545620 M-8766-P33 DONGJU Industrial Co., Ltd APC533 94545621 M-8766-P32 DONG
47、JU Industrial Co., Ltd APC532 94545622 M-8766-P48 DONGJU Industrial Co., Ltd APC448 94545623 M-8766-P67 DONGJU Industrial Co., Ltd APC867 94545624 M-8766-P70 DONGJU Industrial Co., Ltd - 94545625 M-8766-P49 DONGJU Industrial Co., Ltd APC449 94545677 M-8766-P34 DONGJU Industrial Co., Ltd APA434 94545
48、678 M-8766-P50 DONGJU Industrial Co., Ltd APC326 94545679 M-8766-P68 DONGJU Industrial Co., Ltd APC868 94545680 M-8766-P70 DONGJU Industrial Co., Ltd APC115 94545701 M-8766-P54 DONGJU Industrial Co., Ltd APC254 94545707 M-8766-P03 DONGJU Industrial Co., Ltd APC403 94545744 M-8766-P04 DONGJU Industri
49、al Co., Ltd APC704 94545745 M-8766-P05 DONGJU Industrial Co., Ltd APC505 94545746 M-8766-P06 DONGJU Industrial Co., Ltd APC106 94545756 M-8766-P47 DONGJU Industrial Co., Ltd APC547 94545757 M-8766-P53 DONGJU Industrial Co., Ltd APC053 EDS-M-8766ANTI CHIPPING PRIMER SURFACER PAGE: 8/10 ISSUED DATE: 1998. 09. 28 REVISED DATE: 2005. 12. 21 VERSION: 8 GM DAEWOO Auto & Technology Part NO. Old P/NO. Approved Supplier Approved Raw Material Remarks 94545758 M-8766-P55 DON
