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!

Polyurethane/POSS nanocomposites for superior hydrophobicity and high ductility

倍半硅氧烷 材料科学 接触角 聚氨酯 纳米复合材料 极限抗拉强度 玻璃化转变 复合材料 聚合物 复合数 高分子化学
作者
Hui Zhao,Wei She,Dean Shi,Wei Wu,Qunchao Zhang,Robert K.Y. Li
出处
期刊:Composites Part B-engineering [Elsevier BV]
卷期号:177: 107441-107441 被引量:67
标识
DOI:10.1016/j.compositesb.2019.107441
摘要

A novel polyhedral oligomeric silsesquioxane with di-hydroxyl and two triethoxy groups (m-POSS) was synthesized by a facile method. Then it reacted with diisocyanate to prepare aqueous polyurethane (APU)/m-POSS nanocomposites. The di-hydroxyl groups facilitating the m-POSS dispersing into the main chain of the APU, during which two triethoxy groups served as cross-linking sites. The addition of m-POSS had little influence on the viscosity and stability of the APU/m-POSS dispersions. The APU/m-POSS nanocomposite film with 8 wt% m-POSS exhibited superior surface hydrophobicity with water contact angle up to 121° due to the migration of Si element from inner to the surface. Moreover, the Young's modulus and tensile strength of APU/m-POSS composite increased up to 21.8 MPa and 15.3 MPa, respectively, with the elongation at break increased up to 1000%, which was ascribed to the enhancement of the cross-linked m-POSS. The DMA results revealed that the glass transition temperature (Tg) of the APU hard segment increased significantly while a little change was observed for that of soft segments, indicating that the m-POSS preferred to locate in the APU as hard segments. This functionalized m-POSS can endow polymer matrix with superior hydrophobicity and enhanced mechanical properties.
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
1秒前
慕小通通完成签到,获得积分10
2秒前
wyy发布了新的文献求助10
4秒前
yutang完成签到 ,获得积分10
4秒前
CodeCraft应助Crw__采纳,获得10
5秒前
充电宝应助13508104971采纳,获得10
6秒前
7秒前
yy完成签到 ,获得积分10
10秒前
希望天下0贩的0应助wyy采纳,获得10
11秒前
英俊的铭应助红烧猪猪侠采纳,获得10
11秒前
桃子呐完成签到,获得积分10
13秒前
田様应助米米采纳,获得10
18秒前
斯文招牌发布了新的文献求助10
18秒前
蜡笔小z完成签到 ,获得积分10
19秒前
19秒前
19秒前
20秒前
迷路的百褶裙完成签到,获得积分10
21秒前
Crw__发布了新的文献求助10
23秒前
13508104971发布了新的文献求助10
26秒前
0000完成签到 ,获得积分10
28秒前
博修发布了新的文献求助100
29秒前
wzytu3完成签到,获得积分10
32秒前
在水一方应助科研通管家采纳,获得10
34秒前
科研通AI2S应助科研通管家采纳,获得10
34秒前
爆米花应助科研通管家采纳,获得10
34秒前
bkagyin应助科研通管家采纳,获得10
34秒前
柯一一应助科研通管家采纳,获得10
34秒前
小稻草人应助科研通管家采纳,获得10
34秒前
34秒前
34秒前
34秒前
w5566完成签到 ,获得积分10
35秒前
斯文招牌完成签到,获得积分10
36秒前
林攸之完成签到,获得积分10
37秒前
orixero应助wzytu3采纳,获得10
38秒前
a553355发布了新的文献求助10
39秒前
坐宝马吃地瓜完成签到 ,获得积分10
43秒前
量子星尘发布了新的文献求助10
47秒前
善学以致用应助博修采纳,获得10
50秒前
高分求助中
The Mother of All Tableaux Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 2400
Ophthalmic Equipment Market by Devices(surgical: vitreorentinal,IOLs,OVDs,contact lens,RGP lens,backflush,diagnostic&monitoring:OCT,actorefractor,keratometer,tonometer,ophthalmoscpe,OVD), End User,Buying Criteria-Global Forecast to2029 2000
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Cognitive Neuroscience: The Biology of the Mind (Sixth Edition) 1000
Optimal Transport: A Comprehensive Introduction to Modeling, Analysis, Simulation, Applications 800
Official Methods of Analysis of AOAC INTERNATIONAL 600
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 3959928
求助须知:如何正确求助?哪些是违规求助? 3506172
关于积分的说明 11128138
捐赠科研通 3238123
什么是DOI,文献DOI怎么找? 1789535
邀请新用户注册赠送积分活动 871803
科研通“疑难数据库(出版商)”最低求助积分说明 803024