阻燃织物老化对其拉伸强力影响的研究进展

针对阻燃织物老化造成的强力下降,致使消防服无法满足标准规定的力学性能要求等问题,基于老化条件下织物强力测试相关标准,从热老化、光老化、磨损3个方面探讨不同老化方式对阻燃织物拉伸强力的影响;归纳了阻燃织物老化后强力变化的直接和间接测评方法。研究发现:目前老化后阻燃织物的强力测试无法满足标准规定的样本尺寸、经纬向测试、重复实验次数等要求;现有老化条件下阻燃织物强力预测方法在研究多因素条件下织物强力变化时存在局限性。最后指出:未来可综合考虑多种老化因素的交互作用对阻燃织物力学性能的影响,探索更复杂的非线性模型或借鉴其他领域中的预测方法对阻燃织物老化后力学性能进行预测,以提高预测精度和适用范围。

Research progress in effect of flame-retardant fabric aging on its tensile strength

In view of the strength drop caused by the aging of flame-retardant fabrics, which makes fire-fighting clothing unable to meet the mechanical performance requirements of the standard, based on the related standards of fabric strength testing under aging conditions, the effects of different aging methods were discussed from the three aspects of thermal aging, ultraviolet aging and abrasion. The influence of the tensile strength of flame-retardant fabrics, and the direct and indirect evaluation methods for the strength changes of flame-retardant fabrics after aging are summarized. It is found that the current strength test for flame-retardant fabrics after aging may have problems relating to the sample size, test for both warp and weft directions, and the number of repeated experiments specified in the standard. It is pointed out that the current method for predicting the strength of flame-retardant fabrics under aging conditions has limitations in studying the changes in fabric strength under multi-factor conditions. It is suggested that the interaction of multiple aging factors on the mechanical properties of flame-retardant fabrics should be comprehensively considered in the future, through exploration of more complex nonlinear models or learn from prediction methods in other fields to predict the mechanical properties of flame-retardant fabrics after aging to improve the prediction accuracy and scope of application.