量材料热特性综合分析系统（差示扫描量热仪）在刑侦技术与司法鉴定中的应用介绍
作者：毕思特科技 来源：毕思特科技 浏览数：13 发布时间：2026/2/27 10:36:28
量材料热特性综合分析系统（差示扫描量热仪）在刑侦技术与司法鉴定中的应用介绍
微量材料热特性综合分析系统（差示扫描量热仪）是司法鉴定与刑事科学技术领域的精密热分析装备，专为文件形成时间鉴定、微量物证材料特性分析设计。基于差示扫描量热技术，系统可精准捕捉微量材料受热过程中的热流变化，将材料老化状态、成分差异转化为可量化的 “热指纹” 图谱，为文书物证鉴定提供客观科学的物理化学依据，破解文件相对形成时间鉴定、微量物证比对等行业痛点。
仪器仅需毫克至微克级样品即可完成检测，实现对单点墨迹、微量纤维等珍贵物证的微损检验；高精度程控温控与高灵敏度热流检测，可精准捕捉材料玻璃化转变、氧化分解等微弱热信号；全自动程序与气氛控制，保障检测数据的重复性与可比性，完全适配司法鉴定标准化流程。
该系统核心应用于文书物证鉴定领域，通过比对墨水、墨粉、印油的 DSC 曲线特征，分析材料老化规律，为文件相对形成时间判定提供核心支撑；也可用于纸张、黏合剂等材料的种类与批次比对，识别变造、添改痕迹。实战案例：案例一，遗嘱真伪纠纷案中，涉案遗嘱标称形成时间与争议时间不符，系统检测遗嘱墨迹与同期已知样本的热行为特征，发现老化程度显著差异，为认定遗嘱倒签伪造提供关键科学依据。案例二，合同添改案中，系统检出添写字迹与原文字迹的热分解曲线存在明显差异，锁定添改痕迹，为变造文件鉴定提供量化支撑。
综上，该系统实现了微量物证的高精度、标准化、微损检测，填补了文件形成时间鉴定的技术短板，大幅提升文书物证鉴定的客观性与科学性，是公安文检、司法鉴定机构开展复杂文书鉴定、微量物证分析的核心装备，为提升鉴定意见的司法公信力提供重要技术保障。
厂家信息：北京毕思特联合科技有限公司
网址：https://www.bestlh.com
地址：北京市亦庄开发区经海六路一号院尖子班C9独栋
电话：010-56526048
Application Introduction of Comprehensive Thermal Characteristic Analysis System for Trace Materials (Differential Scanning Calorimeter) in Criminalistics and Forensic Identification
Global site URL：https://xilankeji.en.alibaba.com
The Comprehensive Thermal Characteristic Analysis System for Trace Materials (Differential Scanning Calorimeter, DSC) is a precision thermal analysis equipment in the field of criminalistics and forensic identification, specifically designed for document dating and characteristic analysis of trace physical evidence. Based on differential scanning calorimetry technology, the system can accurately capture the heat flow changes of trace materials during the heating process, and convert the aging state and compositional differences of materials into quantifiable "thermal fingerprint" spectra. It provides objective and scientific physicochemical basis for forensic document examination, and solves the industry pain points such as relative dating of documents and comparison of trace physical evidence.
The instrument can complete the analysis with only milligram to microgram level samples, realizing micro-destructive testing of precious physical evidence such as single-point ink marks and trace fibers; high-precision programmed temperature control and high-sensitivity heat flow detection can accurately capture weak thermal signals such as glass transition, oxidative decomposition of materials; fully automatic program and atmosphere control ensure the repeatability and comparability of test data, which fully adapts to the standardized process of forensic identification.
The core application of the system is in the field of forensic document examination. By comparing the DSC curve characteristics of ink, toner and stamping ink, and analyzing the aging law of materials, it provides core support for the determination of the relative formation time of documents; it can also be used for the comparison of types and batches of materials such as paper and adhesives, and to identify alteration and addition traces. Practical cases: Case 1, in a dispute over the authenticity of a will, the nominal formation time of the involved will was inconsistent with the disputed time. The system detected the thermal behavior characteristics of the ink on the will and known samples of the same period, and found a significant difference in the aging degree, which provided key scientific basis for the determination of backdated forgery of the will. Case 2, in a contract alteration case, the system detected an obvious difference in the thermal decomposition curve between the added handwriting and the original handwriting, locked the alteration traces, and provided quantitative support for the identification of altered documents.
In summary, the system realizes high-precision, standardized and micro-destructive testing of trace physical evidence, fills the technical short board of document dating, greatly improves the objectivity and scientificity of forensic document examination. It is the core equipment for public security document examination and forensic institutions to carry out complex document identification and trace physical evidence analysis, and provides important technical guarantee for improving the judicial credibility of identification opinions.