ISO 20136:2017 皮革 微生物降解性的测定
标准编号：ISO 20136:2017
中文名称：皮革 微生物降解性的测定
英文名称：Leather — Determination of degradability by micro-organisms
发布日期：2017-03
标准范围
ISO 20136:2017规定了一种测试方法，通过间接测定胶原降解产生的CO2来确定不同动物来源的生皮和兽皮（无论是否鞣制）的有氧生物降解程度和速率。将测试材料暴露于水性介质中的接种物（来自制革废水的活性污泥）。本文件中建立的条件对应于达到最大生物降解水平的最佳实验室条件。然而，它们可能不一定对应于天然介质中的最佳条件或最大生物降解水平。通常，实验程序包括在受控条件下确定材料的降解程度和速率，这允许分析整个测试过程中产生的逸出二氧化碳。为此，测试设备符合关于流量、温度和搅拌控制的严格要求。本方法适用于以下材料:-动物基质(动物组织/皮肤)的天然聚合物，-使用有机或无机鞣剂鞣制的兽皮和皮(皮革)，-在测试条件下不抑制接种物中存在的微生物活性的皮革。
ISO 20136:2017 specifies a test method to determine the degree and rate of aerobic biodegradation of hides and skins of different animal origin, whether they are tanned or not, through the indirect determination of CO2 produced by the degradation of collagen.The test material is exposed to an inoculum (activated sludge from tannery wastewater) in an aqueous medium.The conditions established in this document correspond to optimum laboratory conditions to achieve the maximum level of biodegradation. However, they may not necessarily correspond to the optimum conditions or maximum level of biodegradation in the natural medium.In general, the experimental procedure covers the determination of the degradation degree and rate of the material under controlled conditions, which allows the analysis of the evolved carbon dioxide produced throughout the test. For this purpose, the testing equipment complies with strict requirements with regard to flow, temperature and agitation control.This method applies to the following materials:- natural polymers of animal stroma (animal tissue/skins),- animal hides and skins tanned (leather) using organic or inorganic tanning agents,- leathers that, under testing conditions, do not inhibit the activity of microorganisms present in the inoculum.
标准预览图
