A review of recent progress in the studies of molecular and microstructure of coupling agents and their functions in composites, coatings and adhesive joints

硅烷 材料科学 硅烷 复合材料 相间 微观结构 固化(化学) 胶粘剂 氢键 硅醇 吸附 分子 化学工程 有机化学 化学 图层(电子) 遗传学 工程类 生物 催化作用
作者
Hatsuo Ishida
出处
期刊:Polymer Composites [Wiley]
卷期号:5 (2): 101-123 被引量:269
标识
DOI:10.1002/pc.750050202
摘要

Abstract Recent progress in the studies of molecular and microstructure of interfaces and interphases in composites, coatings, and adhesive joints is reviewed. Remarkable progress has been made in elucidating the structure of silane coupling agents and their function with respect to dry and wet strengths of multiphase systems. Aminosilanes attracted major effort in the past. It is now understood that the structure of partially cured hydrolyzate is complicated. When adsorbed from a natural pH solution and dried in air at room temperature, approximately half of the amine groups form amine bicarbonate salt with the CO 2 in air. The rest of the amine groups are either intra‐ and intermolecularly hydrogen bonded to neighboring silanol groups or free from hydrogen bonding. There exists chemical bonding at the glass/silane or metal/silane interfaces. The surface characteristics, including acidity, topology and homogeneity, influence the structure of the coupling agent. The coupling agent interphase shows a gradient in various properties. Silanes tend to be ordered in the interphase and the degree of organization depends largely on the organofunctionality. The orientation and organization of the silane affects the reinforcement mechanism. There are chemisorbed and physisorbed silanes in the interphase. The coupling agent/matrix interface is a diffuse boundary where intermixing takes place due to penetration of the matrix resin into the chemisorbed silane layers and the migration of the physisorbed silane molecules into the matrix phase. With proper selection of the organofunctionality and the curing conditions, silanes can chemically react with the matrix to form copolymers. The existence of the matrix interphase is now well accepted and the effect of the interphase on the mechanical properties has been studied. It has been recognized that modification of the matrix interphase, such as a coating applied on the fiber using a similar resin as the matrix, has a complex effect on the mechanical performance. It is noteworthy that attempts to synthesize new coupling agents and to utilize the existing coupling agents more effectively still continue. Based on the molecular understanding, new concepts in the reinforcement mechanism have appeared which recognize the importance of interpenetrating networks, the structure of silane in the treating solution, and the microheterogeneity of the glass surfaces. The knowledge obtained through the studies of composites can be applied to organic coatings and adhesive joints provided that the geometrical factors are taken into consideration.
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
老大蒂亚戈应助YJ888采纳,获得10
1秒前
JamesPei应助潇湘雪月采纳,获得10
1秒前
bbczj发布了新的文献求助10
3秒前
4秒前
5秒前
南风知我意完成签到,获得积分20
6秒前
段一帆发布了新的文献求助30
8秒前
wangqinlei完成签到 ,获得积分10
8秒前
fenghp发布了新的文献求助10
9秒前
王馨雨发布了新的文献求助10
9秒前
11秒前
CipherSage应助ccalvintan采纳,获得10
12秒前
12秒前
雪天的阳完成签到 ,获得积分10
14秒前
15秒前
16秒前
16秒前
烟花应助ren采纳,获得10
17秒前
讨厌科研发布了新的文献求助10
17秒前
量子星尘发布了新的文献求助10
18秒前
苏卿应助科研通管家采纳,获得30
19秒前
fd163c应助科研通管家采纳,获得10
20秒前
香蕉觅云应助科研通管家采纳,获得10
20秒前
思源应助科研通管家采纳,获得10
20秒前
SYLH应助科研通管家采纳,获得10
20秒前
20秒前
CAOHOU应助科研通管家采纳,获得10
20秒前
爆米花应助科研通管家采纳,获得10
20秒前
SYLH应助科研通管家采纳,获得30
20秒前
小蘑菇应助科研通管家采纳,获得10
20秒前
20秒前
殷勤的紫槐完成签到,获得积分10
20秒前
风轻青柠发布了新的文献求助10
21秒前
21秒前
机智冬灵完成签到,获得积分10
22秒前
23秒前
为小嗳打伞完成签到 ,获得积分10
25秒前
小木安华发布了新的文献求助10
25秒前
体贴的之卉完成签到,获得积分20
27秒前
大侠完成签到 ,获得积分10
27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
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
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 3989390
求助须知:如何正确求助?哪些是违规求助? 3531487
关于积分的说明 11254109
捐赠科研通 3270153
什么是DOI,文献DOI怎么找? 1804887
邀请新用户注册赠送积分活动 882087
科研通“疑难数据库(出版商)”最低求助积分说明 809174