[1]宋育芳,肖乐勤,菅晓霞,等.低分子量聚丙烯酸钾的合成及其应用[J].爆破器材,2019,48(05):40-45.[doi:10.3969/j.issn.1001-8352.2019.05.008]
 SONG Yufang,XIAO Leqin,JIAN Xiaoxia,et al.Synthesis of Potassium Polyacrylate with Low Molecular Weight and Its Application[J].EXPLOSIVE MATERIALS,2019,48(05):40-45.[doi:10.3969/j.issn.1001-8352.2019.05.008]
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低分子量聚丙烯酸钾的合成及其应用()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
48
期数:
2019年05
页码:
40-45
栏目:
爆炸材料
出版日期:
2019-09-29

文章信息/Info

Title:
Synthesis of Potassium Polyacrylate with Low Molecular Weight and Its Application
文章编号:
5261
作者:
宋育芳肖乐勤菅晓霞周伟良
南京理工大学化工学院(江苏南京,210094)
Author(s):
SONG Yufang XIAO Leqin JIAN Xiaoxia ZHOU Weiliang
School of Chemical Engineering, Nanjing University of Science and Technology (Jiangsu Nanjing, 210094)
关键词:
消焰剂有机钾盐相容性燃烧残渣
Keywords:
flame suppressant organic potassium salt compatibility combustion remains
分类号:
TQ569
DOI:
10.3969/j.issn.1001-8352.2019.05.008
文献标志码:
A
摘要:
采用水溶液聚合法制备了低分子量聚丙烯酸钾(PAAK),并作为新型消焰剂加入单基发射药中。通过火焰原子吸收光谱法测试了PAAK中钾的含量;用乌氏黏度计测定了特性黏度;采用DSC法研究不同pH值的PAAK与硝化棉(NC)的相容性;利用充氮氧弹法对添加PAAK、硝酸钾KNO3、硫酸钾K2SO4的单基发射药的燃烧残渣进行了对比研究。结果表明,合成的PAAK中,钾的质量分数为15.21%,相对分子量在3 000左右,有利于和NC均匀混合,且在中性或微碱性(pH=7.0~7.5)的情况与NC相容性良好。与传统的KNO3、K2SO4消焰剂相比,PAAK能够和NC均匀混合,制备均质透明的单基发射药;PAAK发射药的燃烧残渣最少,占发射药质量的0.18%。
Abstract:
Potassium polyacrylate (PAAK) with the low molecular weight was synthesized by aqueous solution polymerization, and it was used as an organic flame suppressant to prepare single-based propellant. Potassium content in PAAK was tested by a flame atomic absorption spectrometry, and intrinsic viscosity was measured by a Ubbelohde viscometer. Compatibility of PAAK with nitrocellulose (NC) was investigated by DSC method, and combustion residues of single-based propellant containing PAAK, KNO3 or K2SO4 were compared by nitrogen-bomb method. The results show that mass fraction of potassium in PAAK is 15.21%, and the molecular weight is about 3 000, which is beneficial to mix with NC uniformly. It has a good compatibility with NC in neutral or slightly alkaline (pH=7.0-7.5). Compared with single-based propellant containing KNO3 or K2SO4, the single-based propellant containing PAAK is homogeneous and transparent due to PAAK being evenly mixed NC. Combustion residue of PAAK propellant is the least, accounting for 0.18% of the mass of propellant.

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备注/Memo

备注/Memo:
收稿日期:2018-04-27
基金项目:陆装预研项目(301110104)
第一作者:宋育芳(1992-),女,博士研究生,主要从事含能材料的研究。E-mail: syfsong@yeah.net
通信作者:肖乐勤(1972-),女,副研究员,主要从事含能高分子材料的研究。E-mail:leqinxiao@163.com
更新日期/Last Update: 2019-09-29