低腐蚀级和通用级聚甲醛性能对比研究  

Comparative Research on Properties of Low-corrosion and General-purpose Polyformaldehyde

作　　者：王启 方伟 周涛 WANG Qi;FANG Wei;ZHOU Tao(CHN Energy Ningxia Coal Industry Co.,Ltd.Methanol Branch,Lingwu,Ningxia 750411;Collaborative Innovation Center of High-value Industrial Technology for Coal-based Synthetic Resins,Lingwu,Ningxia 750411;State Key Laboratory of Polymer Materials Engineering,Chengdu,Sichuan 610065)

机构地区：[1]国家能源集团宁夏煤业有限责任公司甲醇分公司,宁夏灵武750411 [2]煤基合成树脂高值化产业技术协同创新中心,宁夏灵武750411 [3]高分子材料工程国家重点实验室,四川成都610065

出　　处：《能源科技》2024年第1期75-78,共4页Energy Science and Technology

摘　　要：采用热失重(TG)、偏光显微镜(PLM)、熔体流动速率(MFR)、核磁共振光谱分析(NMR)、不稳定端基含量、表面甲醛含量、力学性能、黄色指数分析和碳钢腐蚀等方法研究了通用级聚甲醛MC90产品和实验室自制低腐蚀级MC90-A聚甲醛的性能。结果表明:低腐蚀级MC90-A力学性能与通用级聚甲醛MC90产品相当,但具有更低的表面甲醛含量、不稳定端基含量和甲酸含量,因此能够更好地防止加工过程中对挤出设备和模具的腐蚀。This paper carries out research on the properties of general-purpose polyformaldehyde MC90 and laboratory-made low-corrosion polyformaldehyde MC90-A by means of,among others,thermogravimetric(TG)analysis,polarized light microscopy(PLM),melt mass-flow rate(MFR),nuclear magnetic resonance(NMR)spectroscopy,unstable end group content,surface formaldehyde content analysis,mechanical property analysis,yellowness index analysis and carbon steel corrosion analysis.The results show that the low-corrosion polyformaldehyde MC90-A has equivalent mechanical properties to general-purpose polyformaldehyde MC90,but displays lower surface formaldehyde content,unstable end group content and formic acid content,and is hence able to better prevent corrosion on extruders and moulds during processing.

关 键 词：低腐蚀 聚甲醛 表面甲醛 不稳定端基 甲酸 

分 类 号：TQ326.51[化学工程—合成树脂塑料工业]