Please wait a minute...
 
最新公告: 重要提醒:骗子冒充编辑部要求加作者微信,谨防上当!   关于暑假、寒假期间版面费发票及期刊样刊延迟邮寄的通知    
现代化工  2019, Vol. 39 Issue (1): 154-157    DOI: 10.16606/j.cnki.issn0253-4320.2019.01.032
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
低挥发份聚甲醛的制备及其性能研究
胡朝辉1,2, 张广发1,2, 李武斌1,2, 杨艳兵1,2, 乔方方1,2, 韩元培1,2
1. 开封龙宇化工有限公司, 河南 开封 475200;
2. 开封市聚甲醛基新材料重点实验室, 河南 开封 475200
Preparation and properties of POM with lower volatile matters
HU Zhao-hui1,2, ZHANG Guang-fa1,2, LI Wu-bin1,2, YANG Yan-bing1,2, QIAO Fang-fang1,2, HAN Yuan-pei1,2
1. Kaifeng Longyu Chemical Co., Ltd., Kaifeng 475200, China;
2. Kaifeng Key Laboratory of POM-based New Materials, Kaifeng 475200, China
下载:  PDF (1408KB) 
输出:  BibTeX | EndNote (RIS)      
摘要 研究了聚甲醛制备过程中引发剂质量分数、物料配比及反应温度等对聚甲醛中低分子甲醛的影响,并最终制备出低挥发分聚甲醛。研究结果表明,在反应温度为89℃、引发剂质量分数为50 μg/g时,聚甲醛GM最低,同时,采用引发剂与二氧五环先期进行聚合,能够有效降低聚甲醛中的小分子甲醛,提升聚甲醛的热分解温度,此时,聚甲醛性能比研究前具有明显提升,拉伸强度、缺口冲击强度、弯曲强度分别达到61.3、90.3、6.71 MPa;聚甲醛GM为78 μg/g,能够满足汽车等行业对于低挥发分聚甲醛的要求。同时,封端剂及封端剂用量对聚甲醛的GM具有较大影响,当封端剂质量分数为1 300 μg/g时,活性中心及不稳定末端基基本达到完全钝化的目的。
服务
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章
胡朝辉
张广发
李武斌
杨艳兵
乔方方
韩元培
关键词:  低挥发分  聚甲醛  三氟化硼  三聚甲醛  二氧五环    
Abstract: Polyoxymethylene (POM) with lower volatile matters is prepared and the effects of the mass content of initiator,the ratio of raw materials and reaction temperature on low molecular formaldehyde in prepared POM are investigated.It is shown that the content of low molecular formaldehyde in prepared POM can reach the minimum when reaction temperature is set at 89℃ and the content of initiator is 50 μg·g-1.Meanwhile,the pre-polymerization between initiator and dioxolane can reduce effectively the content of low molecular formaldehyde in prepared POM and enhance the decomposition temperature of POM.Through these improvements,POM performance improves significantly,and the tensile strength,notched impact strength and flexural strength of samples are 61.3 MPa,90.3 MPa and 6.71 MPa respectively.The content of low molecular formaldehyde is as low as 78 μg·g-1,which can meet the requirements from the automotive and other industries.It is found that the type and dosage amount of blocking agent has a great impact on the content of low molecular formaldehyde in POM.The active center and the unstable terminal group are completely passivated when the dosage amount of blocking agent is 1 300 μg·g-1.
Key words:  low volatile matters    polyoxymethylene    boron trifluoride    trioxymethylene    dioxolane
收稿日期:  2018-05-04      修回日期:  2018-11-06          
TQ316.3  
通讯作者:  胡朝辉(1985-),男,本科,工程师,主要从事聚甲醛生产及研究工作,通讯联系人,hchhere@163.com    E-mail:  hchhere@163.com
引用本文:    
胡朝辉, 张广发, 李武斌, 杨艳兵, 乔方方, 韩元培. 低挥发份聚甲醛的制备及其性能研究[J]. 现代化工, 2019, 39(1): 154-157.
HU Zhao-hui, ZHANG Guang-fa, LI Wu-bin, YANG Yan-bing, QIAO Fang-fang, HAN Yuan-pei. Preparation and properties of POM with lower volatile matters. Modern Chemical Industry, 2019, 39(1): 154-157.
链接本文:  
http://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2019.01.032  或          http://www.xdhg.com.cn/CN/Y2019/V39/I1/154
[1] Uthaman R N,Pandurangan A,Majeed S S M A.Blends of polyacetal and ethylene-octene elastomer:Mechanical,dynamic mechanical and morphological properties[J].Journal of Polymer Research,2007,14(6):441-447.
[2] Ignatova M.Synthesis of copolymer brushes endowed with adhesion to stainless steel surfaces and antibacterial properties by controlled nitroxide-mediated radical polymerization[J].Langmuir,2004,20(24):10718-10726.
[3] 申宏鹏,孟永智,方伟,等.煤基共聚甲醛增韧改性研究[J].工程塑料应用,2013,41(11):35-38.
[4] Celik F E,Kim T J,Bell A T.Effect of zeolite framework type and Si/Al ratio on dimethoxymethane carbonylation[J].Journal of Catalysis,2010,270(1):185-195.
[5] Burger J,Siegert M,Strofer E,et al.Poly(oxymethylene) dimethyl ethers as components of tailored diesel fuel:Properties,synthesis and purification concepts[J].Fuel,2010,89(11):3315-3319.
[6] 李朝艳.煤矸石增韧聚甲醛树脂的研究[J].天然气化工,2014,(6):21-24.
[7] 钱志强.聚甲醛的增强、耐磨及增韧改性技术的研究与开发[D].北京:北京化工大学,2014.
[8] 吴保章,王彦辉,李豪,等.膨胀蛭石填充聚甲醛复合材料的制备与性能[J].化学研究,2017,28(2):236-240.
[9] 卢波,邹光继,季君晖,等.聚甲醛/水镁石纤维复合材料的制备与表征[J].合成树脂及塑料,2015,32(5):32-35.
[10] Echhard S,Hans H,Sergej B.Method for producing polyoxymethylene dimethyl ethers from methanol and formaldehyde:US,7671240[P].2010-03-02.
[11] Burger J,Strofer E,Hasse H.Chemical equilibrium and reaction kinetics of the heterogeneously catalyzed formation of poly(oxymethylene) dimethyl ethers from methylal and trioxane[J].Industrial & Engineering Chemistry Research,2012,51(39):12751-12761.
[12] 曲敏杰,张金东,马春,等.聚氨酯/纳米二氧化硅/POM复合材料的研究,塑料工业,2011,39(4):58-61.
[13] 凌绳,王秀芳,吴友平.聚合物材料[M].北京:化学工业出版社,2010.
[14] 龙春光,吴茵,华熳煜.聚甲醛多元复合材料的力学性能和承载能力[J].功能材料,2005,36(5):684-686.
[15] 蔡菁菁,张明非,蔡绪福.弹性体和刚性粒子对聚甲醛的增韧改性研究[J].中国塑料,2012,26(8):26-30.
[1] 韩元培, 冷栋云. 三聚甲醛纯度提升研究[J]. 现代化工, 2018, 38(11): 189-191,193.
[2] 赵精彩, 裴义霞, 顾军民. 聚甲醛二甲醚精制过程模拟分析[J]. 现代化工, 2016, 36(12): 154-157.
No Suggested Reading articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
京ICP备09035943号-37
版权所有 © 《现代化工》编辑部
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn