耐盐水腐蚀性测试.doc

dupont teflon. finishes global cookware test method protocoltitle: salt corrosion test protocol耐盐水腐蚀性测试gctmp number : 02 revision number : 2 date of revision : february 8, 2002 date of expiring: february 8, 2005 file: gctmp02-salt corrosion c rev2.doc written by : global test team modified by : qpt team approved by: segment product leader: martina m. welcher reference: british standard bs 7069 appendix c. corrosion- modified (1) purpose 目的 to provide a method for testing the corrosion resistance of non-stick coating systems. 用来测试不粘涂料的耐腐蚀性。(2) principle 原理exposure of coating systems to a boiling 10% nacl (salt) solution for a total of 24 hours. 涂料体系在10%的氯化钠（盐水）中煮沸24 hrs。(3) apparatus 仪器3.1 heat source 热源3.2 10% nacl solution 10 %的氯化钠溶液3.3. de-ionized water 去离子水(4) preparation 准备4.1 prepare test specimens in accordance to the procedure outlined on the product fact sheet for proper application, drying and baking of the specified teflon. system. 按照产品技术说明书的程序要求正确准备测试样品，干燥并烘烤指定的特富龙体系。4.2 prepare 10% by weight, salt solution by combining 8 tablespoons (106 gr) table salt and 4 cups (960 gr) de-ionized water. 将8汤匙（106 gr）食盐溶解于4杯去离子水中得到重量百分比10%的食盐溶液。4.3 prepare a mild dish detergent solution with tap water. 用去离子水准备温和的洗涤剂。(5) procedure 程序5.1. wash the test specimens in dish detergent solution. 用洗涤剂清洗测试样品。l rinse in cold water. 冷水漂洗。l dry thoroughly. 完全干燥。l visually inspect coating surface for surface defects.用肉眼检查涂料表面缺陷。 l draw a diagram of the test specimen surface. 画出测试样品表面草图。l record all surface imperfections on the reference diagram. 在草图上标出所有的表面缺陷。5.2 pour the 10% salt solution into the clean test specimen to a level past the midway point of the side wall of the vessel. 倒入10%的食盐水于测试样品中，至少要达到其内壁一半的高度l mark the water level on the side wall of the test specimen. 在测试样品内壁标注水面高度l cover the test specimen with a lid. 盖上盖子。5.3. place the test specimen on the heat source. boil the solution for 24 hours. 将测试样品放在热源上，加热溶液24hrs。l boil the solution for 24 hours. add de-ionized water to maintain the water level within 15mm (6.6 inches) at all times.煮沸溶液24hrs。添加去离子水，总保持水面高度在15mm(6.6 inches)以内。 l the 24 hour period may be continuous or, alternately, may comprise if the 8 hour interval is used, remove for the heat source safely. 24小时可以连续，也可以间断。比如可以选用8小时的时间间隔。安全地从热源上移开。l pour the remaining liquid from the test specimen at the end of each cycle. 在最后的循环后倾倒样品中残留的盐水。5.4 wash the test specimen in warm water using the mild dish detergent solution until adhering salt deposits are completely removed. 使用温和的洗涤剂在温水中清洗样品，直至残留的盐分完全洗掉。5.5 visually examine the test specimens after each cycle for defects (blisters) not present in the initial mapping. record new defects on the reference diagram. 每一循环结束后用肉眼检查样品表面新的缺陷（水泡），并在参考草图上标注。5.6 store the test specimens without liquid, dry, overnight. 放置无盐水的样品，干燥，过夜。5.7 repeat the process until a complete 24 hours is completed. 重复程序，直到完成24hrs的测试时间。5.8 visually examine test specimen for defects and record on reference diagram. 用肉眼检查样品表面的缺陷并记录在参考草图上。(6) evaluation 评价 6.1. using the supplied blister rating guide, compare the mapping diagram to the figures for the appropriate rating assessment. record. 使用水泡评级指南来比较草图上的缺陷，得出合适的评级数。(7) reporting 报告 7.1. report the blister rating including 报告水泡级别。7.2 record the following information about the test specimen: 记录样品的下列信息：l dry film thickness (dft) 膜厚l substrate and surface preparation 基材以及基材制备l coating system 涂料体系l manufacturer 厂商l source 来源(8)precision 精度the precision of the test has not been established. the test method and the rating system are subjective. therefore it is recommended that for each set of experiments, the reproducibility is measured by including at least one reference (also called “standa