ASTM D6903-07(2013)
測定替代海水中防污涂料的有機殺蟲劑釋放率的標準試驗方法
Standard Test Method for Determination of Organic Biocide Release Rate From Antifouling Coatings in Substitute Ocean Water
ASTM D6903-07(2013) 發布歷史
ASTM D6903-07(2013)由美國材料與試驗協會 US-ASTM 發布于 2007。
ASTM D6903-07(2013) 在中國標準分類中歸屬于: G51 涂料。
ASTM D6903-07(2013) 測定替代海水中防污涂料的有機殺蟲劑釋放率的標準試驗方法的最新版本是哪一版？
最新版本是 ASTM D6903-07(2020) 。
ASTM D6903-07(2013) 發布之時，引用了標準
- ASTM D1005 使用千分尺測量有機涂層干膜厚度的標準測試方法
- ASTM D1141 替代海水制備的標準規程
- ASTM D1193 試劑水(聯邦試驗方法No.7916)
- ASTM D6442 海水中防污涂層系統銅釋放率的標準試驗方法
ASTM D6903-07(2013)的歷代版本如下：
- 2020年 ASTM D6903-07(2020) 用于替代海水中防污涂料的有機殺菌劑釋放速率的標準測試方法
- 2007年 ASTM D6903-07(2013) 測定替代海水中防污涂料的有機殺蟲劑釋放率的標準試驗方法
- 2007年 ASTM D6903-07 從防污涂層測定替代海洋水中有機生物殺菌劑投放率的標準試驗方法
4.1 This test method is designed to provide a laboratory procedure to quantify and characterize changes in the release rate of organic biocide from antifouling coatings that occur during a period of immersion under specified laboratory conditions of constant temperature, pH, salinity, and hydrodynamics. Quantitative measurement of biocide release rate is necessary to help in selection of materials, providing quality control, and understanding the performance mechanism.
4.2 Results from this test method establish a pattern of biocide release from an antifouling coating over a minimum of 45 days exposure under controlled laboratory conditions. Biocide release rates of antifouling paints in-service vary over the life of the coating system depending on the formulation and on the physical and chemical properties of the environment. Factors such as differences in berthing locations, operating schedules, length of service, condition of paint film surface, temperature, pH, and salinity influence the actual release rate under environmental conditions. Results obtained using this test method do not reflect actual biocide release rates that will occur in service, but provide comparisons of the release rate characteristics of different antifouling formulations in substitute ocean water under the prescribed laboratory conditions.
4.3 By comparison with published copper and organotin release rate data4,5 obtained either by direct measurements from ship hulls or release rate measurements from harbor exposed panels, all data indicate that the results of this generic rotating-cylinder test method significantly overestimate the release rate of biocide when compared to release rates under in-service conditions. For example, published results demonstrate that this generic test method produces higher measurements of copper and organotin release rates than from direct in situ measurements for the same coating on in-service ship hulls and harbor-exposed panels. The difference between the results of this test method and the panel and ship studies was up to a factor of about 30 based on copper release rate data for several commercial antifouling coatings.4, 6 No direct release rate data from ship hulls or harbor-exposed panels have been generated to-date for the biocides covered by this method. However, the expectation is that the results of this test method, when compared with the direct measurements from ship hulls and harbor-exposed panels, could follow the same trend. Realistic estimates of the biocide release from a ship’s hull under in-service conditions can only be obtained from this test method where the difference between the results obtained by this test method and the release rate of an antifouling coating in service is taken into account.
4.4 Where the results of this test method are used in the process of generating environmental risk assessments, for environmental loading estimates, or for regulatory purposes, it is most strongly recommended that the relationship between laboratory release rates and actual environment inputs is taken into account to allow a more accurate approximation of the biocide release rate from antifouling coatings under real-life conditions. This can be accomplished through the application of appropriate correction factors.
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- 標準號
- ASTM D6903-07(2013)
- 發布
- 2007年
- 發布單位
- 美國材料與試驗協會
- 替代標準
- ASTM D6903-07(2020)
- 當前最新
- ASTM D6903-07(2020)
- 引用標準
- ASTM D1005 ASTM D1141 ASTM D1193 ASTM D6442