亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Synthesis and application of a halogen-free epoxy resin flame retardant curing agent

季戊四醇 阻燃剂 材料科学 极限氧指数 固化(化学) 热重分析 环氧树脂 复合材料 碘化氢 极限抗拉强度 可燃性 化学工程 热解 冶金 工程类 烧焦
作者
Hengyang Liu,Bing Liang,Jiapeng Long
出处
期刊:High Performance Polymers [SAGE Publishing]
卷期号:35 (10): 1001-1013 被引量:1
标识
DOI:10.1177/09540083231195524
摘要

In this study, the intermediate of SPDPC flame retardant curing agent was successfully synthesized through the reaction between phosphorus oxychloride and pentaerythritol under the catalysis of 4-dimethylaminopyridine. Using 1,2-propylenediamine and the prepared SPDPC, a novel phosphorus and nitrogen flame retardant curing agent named poly1,2-propylenediamine pentaerythritol diphosphate (PDS) was successfully synthesized. The target product was subjected to characterization using infrared spectroscopy, mass spectrometry, hydrogen NMR spectroscopy and thermogravimetric analysis. The molecular structure of the product was determined and its decomposition temperature curve obtained, leading to the conclusion that it could be cured at high temperatures. DDS was selected as the curing agent for epoxy E-51, the specific curing conditions were obtained by DSC test. Subsequently, E-51, DDS and PDS were mixed for high temperature curing resulting in obtaining test spline of PDS-E-51 flame retardant composite material. Then, the flame retardancy and mechanical properties of the spline were tested. It was observed that pure EP cured by DDS had an LOI of only 19.5%, indicating its flammability. However, upon addition of PDS as a flame retardant, the LOI significantly increased with 20 parts resulting in an LOI of 29.7%. The addition of 25 parts results in an increase in limiting oxygen index to 30.3%, while the tensile strength and impact strength are measured at 38.27 MPa and 5.087 kJ/m 2 respectively. The CCT test shows that the addition of PDS can significantly reduce the HHR and THR of the system. CCT digital photos show that the addition of PDS can make the combustion residue of the system expand obviously, showing a good expansion and flame retardant effect. TG-FTIR gas phase infrared absorption indicates that the addition of PDS can reduce the concentration of combustible gas in the combustion process. Test results indicate that the mechanical properties of PDS-E-51 flame retardant composites experience a certain degree of decline, but with increasing amounts of PDS curing agent added, their flame retardancy is significantly enhanced.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
yueying完成签到,获得积分10
4秒前
6秒前
Owen应助尊敬夜南采纳,获得10
9秒前
花凉完成签到,获得积分10
19秒前
花凉发布了新的文献求助20
21秒前
Ava完成签到,获得积分10
26秒前
liudy完成签到,获得积分10
39秒前
Ava发布了新的文献求助50
39秒前
吃了吃了完成签到,获得积分10
40秒前
liudy发布了新的文献求助10
45秒前
领导范儿应助科研通管家采纳,获得10
51秒前
1分钟前
阿紫吖完成签到 ,获得积分10
1分钟前
过时的白曼完成签到,获得积分10
1分钟前
隐形曼青应助三叔采纳,获得10
1分钟前
2分钟前
陈苗发布了新的文献求助10
2分钟前
在水一方应助scholar丨崔采纳,获得10
2分钟前
不能随便完成签到,获得积分10
2分钟前
2分钟前
碧蓝香芦完成签到 ,获得积分10
2分钟前
scholar丨崔发布了新的文献求助10
2分钟前
2分钟前
2分钟前
可爱的函函应助陈苗采纳,获得10
2分钟前
北北完成签到 ,获得积分10
3分钟前
3分钟前
3分钟前
Nowind发布了新的文献求助10
3分钟前
三叔发布了新的文献求助10
3分钟前
三叔完成签到,获得积分0
3分钟前
怕孤单的绿柏完成签到,获得积分10
3分钟前
Augustines完成签到,获得积分10
3分钟前
3分钟前
lijunliang完成签到 ,获得积分10
4分钟前
Lucas应助欣喜的以丹采纳,获得10
4分钟前
爱吃煎饼果子的芋圆完成签到 ,获得积分10
4分钟前
4分钟前
小神仙完成签到 ,获得积分10
4分钟前
尊敬夜南发布了新的文献求助10
4分钟前
高分求助中
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3990022
求助须知:如何正确求助?哪些是违规求助? 3532092
关于积分的说明 11256327
捐赠科研通 3270943
什么是DOI,文献DOI怎么找? 1805140
邀请新用户注册赠送积分活动 882270
科研通“疑难数据库(出版商)”最低求助积分说明 809228