摘要
内涂环氧树脂复合钢管的服役性能关键取决于其涂塑层的材质与质量。针对实际检测中因填料干扰、表面状态不佳或组分迁移导致的红外光谱识别困难问题,本文系统比较了衰减全反射法(ATR)与溴化钾(KBr)压片法在涂塑层分析中的适用性。结果表明:ATR法操作简便,适用于表面洁净、填料干扰小的样品快速初筛;而KBr压片法可有效消除表面选择性效应,清晰呈现本体树脂及添加剂(如邻苯二甲酸酯增塑剂、碳酸钙、硫酸钡等)的特征吸收峰,尤其适用于复杂配方或ATR谱图质量不佳的仲裁分析。基于此,本文构建了“ATR初筛—KBr复核”的标准化红外鉴别流程,并通过典型试样验证了该流程在识别双酚A型环氧树脂、聚酯-环氧混合体系等方面的可靠性。研究成果为内涂复合钢管的质量控制、失效分析及市场监管提供了实用、高效的分析技术支撑。
The service performance of internally coated epoxy resin composite steel pipes critically depends on the material and quality of their plastic coating layer.In response to the challenges posed by infrared spectroscopy identification difficulties arising from filler interference,poor surface conditions,or component migration in practical testing,this paper systematically compares the applicability of Attenuated Total Reflection(ATR)and potassium bromide(KBr)pellet-pressing methods in the analysis of plastic coating layers.The results indicate that the ATR method is simple to operate and suitable for rapid initial screening of samples with clean surfaces and minimal filler interference.Conversely,the KBr pellet pressing method effectively eliminates surface selectivity effect,clearly presenting the characteristic absorption peaks of the bulk resin and additives(such as phthalate plasticizers,calcium carbonate,barium sulfate,etc.),making it particularly suitable for arbitration analysis of complex formulations or poor-quality ATR spectra.Based on this,this paper establishes a standardized infrared identification process of"ATR initial screening-KBr verification",and verifies the reliability of this process in identifying bisphenol A epoxy resin,polyester-epoxy hybrid systems,and other aspects through typical samples.The research findings provide practical and efficient analytical technical support for quality control,failure analysis,and market supervision of internally coated composite steel pipes.
作者
余巧玲
徐晓燕
梁婉兴
尤海云
刘志健
王万卷
Yu Qiaoling;Xu Xiaoyan;Liang Wanxing;You Haiyun;Liu Zhijian;Wang Wanjuan(Guangzhou Quality Testing&Inspection Institute,Guangzhou 511447,Guangdong,China;Guangzhou NQI-Quality and Safety Technology Co-innovation Center,Guangzhou 511447,Guangdong,China)
出处
《橡塑技术与装备》
2026年第4期5-10,共6页
China Rubber/Plastics Technology and Equipment
基金
广州市市场监督管理局科技项目(2023KJ04)
广州市院士专家工作站(2024-D012)
广州市科技计划项目(2023B04J0407)。
关键词
内涂环氧树脂复合钢管
涂塑层
傅里叶变换红外光谱(FTIR)
衰减全反射法(ATR)
KBr压片法
材料鉴别
双酚A型环氧树脂
聚酯-环氧混合体系
internally coated epoxy resin composite steel pipe
plastic coating layer
Fourier Transform infrared spectroscopy(FTIR)
Attenuated Total Reflection(ATR)method
KBr pellet method
material identification
bisphenol A epoxy resin
polyester-epoxy hybrid system
