冰箱、冰柜用硬质聚氨酯泡沫塑料 Rigid polyurethane cellular plastics used in refrigerators and freezers  ICS  83.100 CCS  G 30   中华人民共和国国家标准 GB/T 26689—2024 代替 GB/T 26689—2011 2024-08-2 3发布 2025-03-0 1实施     国家市场监督管理总局 国家标准化管理委员会 发 布 目　　次 前言   ·····································································································   Ⅲ 1     范围   ··································································································   1 2     规范性引用文件   ······················································································   1 3     术语和定义   ···························································································   1 4     分类   ··································································································   1 5     要求   ··································································································   1      5.1     外观   ······························································································   1      5.2     物理力学性能   ····················································································   2      5.3     高低温循环性能   ·················································································   2 6     试验方法   ······························································································   2      6.1     状态调节   ·························································································   2      6.2     外观   ······························································································   2      6.3     导热系数   ·························································································   2      6.4     压缩强度或形变10%压缩应力   ··································································   2      6.5     尺寸稳定性   ······················································································   3      6.6     表观芯密度   ······················································································   3      6.7     闭孔率   ···························································································   3      6.8     吸水率   ···························································································   3      6.9     高低温循环性能   ·················································································   3      6.10     粘结强度   ························································································   3 7     检验规则   ······························································································   3      7.1     检验分类   ·························································································   3      7.2     组批、抽样   ······················································································   4      7.3     判定规则   ·························································································   4 附录A （资料性）    粘结强度的测定方法   ······························································   5      A.1     试验仪器   ························································································   5      A.2     试样制备   ························································································   5      A.3     试验步骤   ························································································   5      A.4     试验结果   ························································································   5 GB/T 26689—2024     Ⅰ