欧美日韩不卡码一区二区三区,国产精品视频免费一区二区三区,看片国产,99久久精品免费观看区一,www.chenren,男女羞羞免费视频

產品列表PRODUCTS LIST

聯系信息

  • 電話:
    189-2580-2250
  • 傳真:
    18925802250
  • 服務熱線:
    0769-82205353
首頁 > 技術與支持 > ISO 1431-1-2004
ISO 1431-1-2004
點擊次數:1317 更新時間:2019-10-08

ISO 1431-1-2004

本頁面標準信息均來源于網絡收集,或由參與標準制定的供應商提供,只作為參考使用,為確保測試結果的準確性、節省您的時間,如需ISO 1431-1-2004標準詳細信息或ISO 1431-1-2004具體測試方法,請與我們技術人員聯系或給我們留言,我們將為您提供相關的技術支持。

 

ISO 1431-1是關于《塑膠、硫化橡膠或熱塑性橡膠耐臭氧龜裂》的測試方法,現行*近的標準為ISO 1431-1-2012,

ISO 1431標準范圍

 

ISO 1431這部分用于評估在靜態或動態拉伸條件下和溫度中,暴露于含有一定濃度的臭氧的空氣中抗硫化橡膠或熱塑性橡膠開裂時的程序,排除直接光照的影響。

主要注意的是由于不同的橡膠制品的耐臭氧性能在不同的環境下,會有比較為顯著的不同,例如臭氧濃度和溫度的影響。此外由于實際使用中的產品尺寸規格與測試中的樣品不一致,也可能造成測試結果與實際使用過程中出現形變的不一致。因此標準的是使用者需謹慎在測試結果與實際使用過程的相關性進行評估。

附錄A.對臭氧裂解的性質進行了說明。

ISO 1431-3對測定臭氧濃度的參考和替代方法進行了描述。

ISO 1431英文摘錄

WARNING — Persons using this part of ISO 1431 should be familiar with normal laboratory practice.This part of ISO 1431 does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and toensure compliance with any national regulatory conditions.

1 Scope

This part of ISO 1431 specifies procedures intended for use in estimating the resistance of vulcanized or thermoplastic rubbers to cracking when exposed, under static or dynamic tensile strain, to air containing a definite concentration of ozone and at a definite temperature in circumstances that exclude the effects of direct light.

Great caution is necessary in attempting to relate standard test results to service performance since the relative ozone resistance of different rubbers can vary markedly depending on the conditions, especially ozone concentration and temperature. In addition, tests are carried out on thin test pieces deformed in tension and the significance of attack for articles in service can be quite different owing to the effects of size and of the type and magnitude of the deformation. Explanatory notes on the nature of ozone cracking are given in Annex A.

Reference and alternative methods for determining the ozone concentration are described in ISO 1431-3.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties

ISO 1431-3, Rubber, vulcanized or thermoplastic — Resistance to ozone cracking — Part 3: Reference and alternative methods for determining the ozone concentration in laboratory test chambers

ISO 23529, Rubber — General procedures for preparing and conditioning test pieces for physical test methods

粵公網安備44190002001386號

主站蜘蛛池模板: 久久精品中文字幕不卡一二区 | 96视频下载| 国产综合精品久久亚洲 | 漂亮的保姆4观看 | 久久久久国产 | 免费播放aa在线视频成人 | 国产一区二区三区高清 | 亚洲阿v天堂2021在线观看 | 日本无卡码免费一区二区三区 | 激情综合网五月激情 | 大桥未久aⅴ一区二区 | 国产蜜臀| 欧美老女人性 | 欧美亚洲视频一区 | 日本高清二区视频久二区 | 欧美亚洲另类久久综合 | 亚洲国产成人在线视频 | 色爱综合网 | 99视频在线观看免费视频 | 国内毛片| 国产在线成人a | 欧美污视频网站 | 97视频在线播放 | 91热成人精品国产免费 | 理论片亚洲 | 欧美天天视频 | 久久天天躁日日躁狠狠躁 | 成人乱码一区二区三区四区 | 91视频最新 | 六月丁香网站 | 亚洲国产精品久久久久 | 操穴影院 | sw137| 久久亚洲国产欧洲精品一 | 欧美成人午夜精品一区二区 | 欧美午夜精品 | 成人欧美一区二区三区视频不卡 | 欧美日韩亚洲m码色帝国 | 奇米影音先锋 | 欧美色视频在线观看 | 视频精品一区二区三区 |