复配型甲醛吸收剂对聚甲醛游离甲醛含量的影响  

Study on the Effect of Formulated Formaldehyde Absorber on the Free Formaldehyde Content of POM

作　　者：乃国星 孙亚楠 方伟 金政伟 袁炜 冯金 周涛[3,4] NAI Guo-xing;SUN Ya-nan;FANG Wei;JIN Zheng-wei;YUAN Wei;FENG Jin;ZHOU Tao(Methanol Branch of Ningxia Coal Industry Co.LTD of CHN ENERGY,Yinchuan 750411,Ningxia,China;Institute of Coal Chemical Industry Technology of Ningxia Coal Industry Co.LTD of CHN ENERGY,Yinchuan 750411,Ningxia,China;State Key Laboratory of Polymer Materials Engineering of China,Polymer Research Institute,Sichuan University,Chengdu 610065,Sichuan,China;Collaborative Innovation Center for High-value Synthetic of Coal-based Resins,Yinchuan 750411,Ningxia,China)

机构地区：[1]国家能源集团宁夏煤业有限公司甲醇分公司,宁夏银川750411 [2]国家能源集团宁夏煤业煤炭化学工业技术研究院,宁夏银川750411 [3]高分子材料工程国家重点实验室,四川大学高分子研究所,四川成都610065 [4]宁夏煤基高值化合成树脂技术协同创新中心,宁夏银川750411

出　　处：《合成材料老化与应用》2020年第5期30-32,共3页Synthetic Materials Aging and Application

基　　金：宁夏回族自治区《煤基合成树脂高值化产业技术协同创新中心》。

摘　　要：将三聚氰胺、共聚酰胺、密胺树脂、乙烯-乙烯醇共聚物、尼龙和复配型甲醛吸收剂分别加入聚甲醛中,通过双螺杆挤出机共混,然后分析其游离甲醛的含量。结果表明,传统的三聚氰胺(MA)甲醛吸收剂对游离甲醛有较好的吸收效果,共聚酰胺次之,密胺树脂的效果较前两者差。但三聚氰胺在加工过程中容易挥发,降低热稳定效率的同时,还会发生迁移而形成模垢。共聚酰胺(COPA)作为高分子量的聚合物被用作甲醛吸收剂,将其与三聚氰胺进行1﹕1复配,结果表明其游离甲醛吸收性能也较好,能有效提高聚甲醛的热稳定性。另外,此类甲醛吸收剂的加工稳定性好,分子量高不易挥发,更适合于改善聚甲醛的热稳定性。Melamine, copolyamide, melamine resin, ethylene-vinyl alcohol copolymer, nylon and formulated formaldehyde absorbers were added to polyoxymethylene with a twin-screw extruder, and the content of free formaldehyde was measured.The results show that the traditional melamine(MA) formaldehyde absorber has a better absorption effect on free formaldehyde, followed by copolyamide, and the effect of melamine resin is worse than the former two.However, melamine is volatile during processing, reducing heat stability, and is prone to migration to form mold scale.Copolyamide(COPA) is used for a formaldehyde absorber as a high molecular weight polymer, which is 1:1 compounded with melamine.The results show that the free formaldehyde absorption performance is also good, which can effectively improve the thermal stability of polyoxymethylene.In addition, such formaldehyde absorbents have good processing stability, high molecular weight and low volatilization, which are more suitable for improving the thermal stability of polyoxymethylene.

关 键 词：聚甲醛 复配型甲醛吸收剂 游离甲醛含量 三聚氰胺 共聚酰胺 

分 类 号：TQ224.122[化学工程—有机化工]