已入深夜,您辛苦了!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!祝你早点完成任务,早点休息,好梦!

Effects of curing conditions on structural evolution and mechanical properties of UV-curable polyurethane acrylate coatings

材料科学 固化(化学) 复合材料 聚氨酯 极限抗拉强度 胡须 丙烯酸酯 差示扫描量热法 拉曼光谱 拉伸试验 聚合物 热力学 光学 物理 单体
作者
Fei Dong,Suraj Maganty,Stephan J. Meschter,Junghyun Cho
出处
期刊:Progress in Organic Coatings [Elsevier BV]
卷期号:114: 58-67 被引量:37
标识
DOI:10.1016/j.porgcoat.2017.09.018
摘要

Tin whisker growth phenomenon, which can lead to short circuits in the electronic components and boards, becomes more critical in lead (Pb)-free electronics. One potential solution to this problem is to use a conformal coating to mitigate the tin whisker growth, for which its mechanical properties will play an important role. In this study, a polyurethane acrylate film under the dual curing system (UV and moisture) was investigated in terms of chemical structure evolution and mechanical properties with various curing conditions. To establish the relationship between curing conditions and mechanical behavior of the film, both the UV curing portion (10 min, 20 min, 30 min and 40 min) and moisture curing portion (2 h, 3 h, 4 h and 5 h) were evaluated. Infrared spectroscopy, Raman spectroscopy, differential scanning calorimetry and thermogravimetric analysis were used to examine the curing status and microphase separation of film under various curing conditions, which in turn influenced its mechanical behaviors. Mechanical properties of the film were not only evaluated by a uniaxial tensile stress-strain test but also by stress relaxation and creep tests to quantify the long-term, time-dependent behavior. In addition, the influence of strain rate in tensile test on the mechanical behavior of the film was studied. The tensile test results show that partial cured film (UV20 min and moisture 4 h) has optimum mechanical performance from the strength and ductility point of view. The fully cured film (UV40 min and moisture 4 h), however, possesses more strength to resist plastic deformation during a long-term loading.
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
PAD完成签到,获得积分10
刚刚
Orange应助阿九采纳,获得10
1秒前
悠悠我心发布了新的文献求助30
1秒前
yuC完成签到,获得积分10
2秒前
Ziqingserra完成签到 ,获得积分10
4秒前
yuC发布了新的文献求助10
5秒前
红毛兔完成签到 ,获得积分10
7秒前
上官若男应助yuC采纳,获得30
7秒前
努力站桩的奶酪关注了科研通微信公众号
8秒前
哈哈完成签到 ,获得积分10
8秒前
9秒前
非蛋白呼吸商完成签到,获得积分10
10秒前
11秒前
muyangsiyuan发布了新的文献求助10
15秒前
19秒前
科研通AI2S应助GL采纳,获得10
19秒前
chujun_cai完成签到 ,获得积分10
19秒前
22秒前
24秒前
刺猬发布了新的文献求助10
24秒前
jiaaniu完成签到 ,获得积分10
27秒前
阿九发布了新的文献求助10
27秒前
28秒前
31秒前
33秒前
小二郎应助刺猬采纳,获得10
33秒前
小西米完成签到 ,获得积分10
34秒前
wanglejia完成签到,获得积分10
35秒前
38秒前
GL发布了新的文献求助10
38秒前
xiemeili完成签到 ,获得积分10
39秒前
无聊又夏完成签到,获得积分10
39秒前
40秒前
muyangsiyuan完成签到,获得积分10
47秒前
轻松的惜芹应助CC采纳,获得10
48秒前
50秒前
52秒前
yuntong完成签到 ,获得积分0
52秒前
52秒前
迷路的依波完成签到,获得积分10
53秒前
高分求助中
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
Aktuelle Entwicklungen in der linguistischen Forschung 300
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 3989972
求助须知:如何正确求助?哪些是违规求助? 3532034
关于积分的说明 11256042
捐赠科研通 3270884
什么是DOI,文献DOI怎么找? 1805093
邀请新用户注册赠送积分活动 882256
科研通“疑难数据库(出版商)”最低求助积分说明 809216