Document 2q1Y76bvokdB6L3G3BE0aRLpN

Nissan Engineering Standards lr NES M 0 I 33 Testing Methods of Chemical Resistance for Revised i 979 Synthetic Resin Parts 1, Scope: This standard specifies the testing methods of chemical resistance for synthetic resin parts (hereinafter referred to as "testing method") to be used for automobiles. 2. Classification of Tasting Method*: The testing methods shall be classified into four as shown in Table l, depending on the conditions under which the parts are used and the locations in which they axe installed. Table 7 Testing methods Applications Testing Conditions Required chemical resistance Method 1 Parts to be used as vessels or Dipping the equivalent of them. 0) Chemical resistance to ail chemicals used in vessels. Method 2 V Parts to be installed inside the car (or compartment). Wiping (*> Gasoline resistance, gas oil resistance, oil resistance (*), synthetic sweat resistance, regent resistance. Method 3 Method 4 Parts to be Installed outside the car (or compartment). Pants to be installed in the engine room* Spot test V) Washer liquid resistance, detergent resistance, under coat, resistance, gasoline resistance, gas oil resistance, ofl resistance, kerosine resistance, acid resistance, protective agent resistance, was resistance. Gasoline resistance, gas oil resistance, oil resistance, kerosene resistance, add resistance, brake liquid resis tance, anti freeze resistance, washer liquid resistance, anti-corrosive resistance. Notac (!) The atat* in which th chemical is being put m the test specimen used as a vesaeL, or the state in which the test specimen is put in jn suitable vessel filed with the chemical. (j) The state in which the surface of the test specimen has beer nibbed lightly 2 - 3 times wuh the gauze moistened with the chemicaL C1) The state in which the chemical has been dripped on the surface of the test specimen approximately 0.3 ~" O.i ml through a squirt, etc. (4) The chemicals herein, used for oil resistance testa comprise engine oil, gear oil, torque converter oil, grease and kerosene. - -'v^ , X Conditions of Testing Place: (11 Room temperature conditions The room temperature shall be maintained in conditions specified in Class 3 (temperature of 20 5"C) of the standard temperature states and class 3 of the standard humidity conditions (relative humidity 65 t 20%) under JIS Z 8703--1976 (Standard atmospheric conditions for tasting). (21 Standard atmospheric conditions . The standard atmospheric conditions shall be the states specified in Category 2 of the standard temperature and humidity conditions (temperature of 20s C 2aC, and relative humidity of 0.5 t 2%) under JIS Z 8703--1976 (Standard atmospheric conditions for testing). 4. Twring Devices, Instruments *txt other Supplies (1) Thermostat bath Temperature can be controlled within z 2C ' (2) Wide-mouthed bottle Made of a material unaffected by chemicals (3) Reflux condenser (4) Chemical balance Capable of weighing to 0.1 mg (5) Squirt Made of a material unaffected by chemicals (6) Gauze An article on the market for medical use Thertnofttat bth Abould hm u*d ithen * test is conducted under high temperature or the test tpeci- men. k required to be dried up, while * reflux condenser be in tmt oniy under nigh temperature, \ .) \. CHARDO 01853 A - M 0123 1979 O S. 7t 5f*=m*sr The test specimens used in the test shall, as a ruie^be finished products () and fr3n be perfectly tree from dusts which may affect the results of the test. The test specimens should be'tested, unless otherwise specified, after leaving it for twentv-foux hours in the standard conditions specified in 3. (2). Further details of the specimens are decided by the agreements of parties concerned. 14am (ty. The word* `finished products" di*U m**n th complete mold articles inclusive of secondarily , procMavd and compound one*. The m*y be cut when their configurations are not apt for tests. (Attention should he paid to the portion to be cut of the tut specimen a* wed as to the ltst* ir. which it is installed.) S. Types and Concentration erf Chemical*: The types and the concentration of the chemicals used in tests are as shown in Table 2. Gasoline k (i 43 oil 7 Engine oil Gear ail Torque converter oil Grease Kerosene Acid solution Brake liquid Synthetic sweat liquid Paint film protective igent Anti-freeze W^t yv oshcr liquid Detergent Under-coat Agent Anticorrosive T*W* Z Type* of Chemicals Concentration ( Wt RN-3 of NES M5Q52 (Motor gasoline) NDF-2 of NES. M505S (Diesel ruel oils) SCF--20W 20 of NES M505 J (Lubricating oil for automobile gasoticr* engines) MP-90 of NES M5054- (Automotive gear oil) 100 Nissan's specified ofl. NWB--2 of NES M5063 (Grease for automobiles) No. 2 of JIS 2203-1978 (kerosene) Own 1 of JIS 3951-1972 (Sulfuric add) 25 or 3 NR--3 of NES Mf055 (Motor vehicle brake fluids) As specified, in 9.6,2 of JIS K5772--1976 (Polyvinylchloride coated fabric) As by the agreements of parties concerned LLC of NES M5Q59 (Engine antifreezes) 100 M by the averments of parties concerned Neutral or alkaline detergent, details are to be by the agreements of the- parties concerned As by the agreements of parties concerned As by the agreements of, parties concerned 5 100 7. test CandWomt The. test conditions are prescribed iaTabLe 3. Type of Testing Methods Temperature Tairfc 3: ............ ................................................................................................ ...........--- Time (h) Descriptions Method I Method 2 Method 3 o;| Method 4 Room temperature, or 90 2" C 163 Use a reflux condenser when evaporation ol chemicals is expected. Room temperature Number oi wiping is 2 ~ 3 times, back and forth. 4 Dripping volume: 0.3 0.5 nri CHARDO 01854 J r- 3 M 0133 1979 8, prockjr 3.1 Method 1 (1) Put the specified chemical either in r. vessel used as a test specimen (), or in a wide-mouthed bottle ia which the test specimen is to be placed, and leave the specimen for specified time at a specified temperature, (2) After leaving the specimen, cake it out and wash the chemical off with running water until the chemical on its surface is hardly recognizable. However, should it be impossible to remove the chemical with running water, wash it with such chemicals as alcohol, etc. which do not deterior ate the test specimen. (3) After washing, dry it up. under a room temperature or in a thermostat bath at temperatures which may not affectill on the test specimen. (4) After drying up, check the fault caused om the surface of the test specimen (blister, change of colours, thinning, softening and hardening, etc.) Non: (* } J tha Ruin usage of tha tot ipaoimctt is to usa It aa a vestal and tha tot U to b* performed with the - . chemical put in it, it ia aujgestod that tha tot tpecimen ha installed regularly as far aa pooiblo. 8.2 Method 2 (X) Saturate a piece of gauze with the specified chemical. <2) Move the gauze back and forth a few times, pushing it lightly on the test specimen so that the surface of the specimen should become wet. (3) Leave the test specimen aa it is for a specified time at a specified temperature. (4) After leaving it, wipe the chemical off the test specimen with a new, clean gatuze and see if there -v is any abnormalities caused on it. 3.3 Methods 3 *nd A (1) Drip the specified chemical 0.3 -- 0.5 ml on the surface of the test specimen through a squirt and leave it for & specified time at a specified temperature. (2) After leaving it, wipe off the chemical with a new, clean gauze and examine whether there is any abnormalities on it. 9. Indicstran (1) Any changes in appearance, shape and weight shall be indicated in writing, with details to be presented by photographs or by the actual samples. (2) Any change of dimensions shall be indicated in a mm unit and that of the weight be in a mg unit down to one place of decimals. Indicating in writing is also necessary when the chemicals is affected by the test specimen. 0 CHARDO 01855