T/LFL 004-2023 无醛胶

范围:本文件规定了无醛胶的术语和定义、技术要求、试验方法、检验规则、标识、包装、运输与贮存等。 本文件适用于以水、聚乙烯醇、高岭土等为主要原料且无甲醛添加经反应合成的胶粘剂; 主要技术内容:无醛胶的技术要求项目                                 膏状                                                 固态外观              乳白色微酸气味无杂质均匀膏状流体  乳白色微酸气味粉末状固体pH值                      3.5                                              4.0～5.0不挥发物含量/%    ≥35%                                                 100%固体含量/%           ≥35%                                                  100%粘度/cps                      3000±500                                         3000±500剪切冲击强度/（N/mm）  ≥0.9                                          ≥0.9低温稳定性               低于20℃缓慢凝胶                              -芳香胺含量/（g/kg）      ND                                              -有害物质限量要求游离甲醛/（g/kg）       ND苯/（g/kg）                   ND甲苯+二甲苯/（g/kg）   ND总发挥发物有机物/（g/L）   ND