ASTM D1499 操縱塑料暴露用曝光和暴水裝置(碳弧型)的操作規(guī)程（塑料用濾光明火碳弧型曝光裝置的標(biāo)準(zhǔn)實(shí)施規(guī)程）

ASTM D1499-2013發(fā)行信息

標(biāo)準(zhǔn)號(hào)ASTM D1499-2013

中文名操縱塑料暴露用曝光和暴水裝置(碳弧型)的操作規(guī)程

英文名Standard Practice for Filtered Open-Flame Carbon-Arc Exposures of Plastics

發(fā)布日期2013

實(shí)施日期

廢止日期無(wú)

中國(guó)標(biāo)準(zhǔn)分類號(hào)G31

國(guó)際標(biāo)準(zhǔn)分類號(hào)83.080.01 (Plastics in general)

發(fā)布單位US-ASTM

ASTM D1499-2013適用范圍

4.1 The ability of a plastic material to resist deterioration of its electrical, mechanical, and optical properties caused by exposure to light, heat, and water can be very significant for many applications. This practice is intended to induce property changes associated with end-use conditions, including the effects of sunlight, moisture, and heat. The exposure used in this practice is not intended to simulate the deterioration caused by localized weather phenomena, such as, atmospheric pollution, biological attack, and saltwater exposure.

4.2 Cautionsx2014;Variation in results may be expected when operating conditions are varied within the accepted limits of this practice. Therefore, no reference to the use of this practice shall be made unless accompanied by a report prepared in accordance with Section 9 that describes the specific operating conditions used. Refer to Practice G151 for detailed information on the caveats applicable to use of results obtained in accordance with this practice.

Note 2 Additional information on sources of variability and on strategies for addressing variability in the design, execution, and data analysis of laboratory-accelerated exposure tests is found in Guide G141.

4.2.1 The spectral power distribution of light from an open-flame carbon-arc is significantly different from that produced in light and water exposure devices using other carbon-arc configurations or other light sources. The type and rate of degradation and the performance rankings produced by exposures to filtered open-flame carbon-arcs can be much different from those produced by exposures to other types of laboratory light sources.

4.2.2 Interlaboratory comparisons are valid only when all laboratories use the same type of carbon-arc, filters, and exposure conditions.

4.3 Reproducibility of test results between laboratories has been shown to be good when the stability of materials is evaluated in terms of performance ranking compared to other materials or to a control.5,6 Therefore, exposure of a similar material of known performance (a control) at the same time as the test materials is strongly recommended. It is recommended that at least three replicates of each material be exposed to allow for statistical evaluation of results.

4.4 Test results will depend upon the care that is taken to operate the equipment in accordance with Practice G152. Significant factors include regulation of line voltage, freedom from salt or other deposits from water, temperature and humidity control, and conditions of the electrodes.

1.1 This practice covers specific procedures and test conditions that are applicable for exposure of plastics in filtered op......

4.1塑料材料抵抗因暴露于光、熱和水而導(dǎo)致的電氣、機(jī)械和光學(xué)性能劣化的能力在許多應(yīng)用中可能非常重要。本規(guī)程旨在引起與最終使用條件相關(guān)的性能變化，包括陽(yáng)光、水分和熱量的影響。本規(guī)程中使用的暴露不是為了模擬局部天氣現(xiàn)象造成的惡化，如大氣污染、生物攻擊和鹽水暴露。

4.2；當(dāng)操作條件在本規(guī)程的可接受范圍內(nèi)變化時(shí)，可預(yù)期結(jié)果的變化。因此，除非附有根據(jù)第9節(jié)編制的報(bào)告，說(shuō)明所用的具體操作條件，否則不得提及本規(guī)程的使用。參考規(guī)程G151，了解適用于使用根據(jù)本規(guī)程獲得的結(jié)果的注意事項(xiàng)的詳細(xì)信息。注2：關(guān)于可變性來(lái)源以及解決實(shí)驗(yàn)室加速暴露試驗(yàn)設(shè)計(jì)、執(zhí)行和數(shù)據(jù)分析中可變性的策略的附加信息，見(jiàn)指南G141。

4.2.1明火碳弧產(chǎn)生的光的光譜功率分布與使用其他碳弧配置或其他光源的光和水暴露裝置產(chǎn)生的光譜功率分布明顯不同。暴露于過(guò)濾明火碳弧產(chǎn)生的退化類型和速率以及性能等級(jí)可能與暴露于其他類型的實(shí)驗(yàn)室光源產(chǎn)生的退化類型和速率以及性能等級(jí)大不相同。

4.2.2只有當(dāng)所有實(shí)驗(yàn)室使用相同類型的碳弧、過(guò)濾器和暴露條件時(shí)，實(shí)驗(yàn)室間比較才有效。

4.3當(dāng)根據(jù)與其他材料或?qū)φ瘴锵啾鹊男阅艿燃?jí)評(píng)估材料的穩(wěn)定性時(shí)，實(shí)驗(yàn)室間試驗(yàn)結(jié)果的再現(xiàn)性已被證明是良好的。5,6因此，強(qiáng)烈建議在試驗(yàn)材料的同時(shí)暴露具有已知性能的類似材料（對(duì)照物）。建議對(duì)每種材料至少進(jìn)行三次重復(fù)，以便對(duì)結(jié)果進(jìn)行統(tǒng)計(jì)評(píng)估。

4.4試驗(yàn)結(jié)果將取決于按照規(guī)程G152操作設(shè)備時(shí)的謹(jǐn)慎程度。重要因素包括線路電壓調(diào)節(jié)、無(wú)鹽或其他水沉積物、溫度和濕度控制以及電極條件。