| 高分子 Vol.62 No.7 |
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特集
自我修复材料的新进展 |
| 展望 |
| 可自我修复的超分子材料 | 原田 明 |
| <Abstract>
我们分别用直接混合具有环糊精(CD)的聚合物和具有客体分子的聚合物的方法和共聚CD单体和客体单体的方法来制备了超分子凝胶.我们发现这种凝胶具有自我修复功能,可用直接接触切断面的方法进行自我修复.而且可以采用刺激响应性客体的方法来可控其修复过程. Keywords: Self-healing / Self Organization / Gel / Cyclodextrin / Host-Guest Interactions / Stimuli-Responsive / Sol-Gel Transition / Supramolecular Polymer |
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| 自我修复性纤维强化高分子材料 | 真田和昭 |
| <Abstract>
纤维强化高分子材料(FRP)的应用非常广泛,同时社会对其安全性,信赖性的要求也是越来越高.进而,使FRP本体上赋予自我修复功能的研究也非常活跃.本文介绍了自我修复性纤维强化高分子材料的国内外开发动向和界面剥离自我修复性FRP的研究案例. Keywords: Composite Material / Microcapsule / Interfacial Debonding / Self-Healing |
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| 利用分子扩散的创伤修复研究 | 山口政之 |
| <Abstract>
Molecular interdiffusion of polymer chains can provide the self-healing property, which has been known for a long time as “crack or craze healing”. Such kinds of healing occur when a damaged sample is exposed to higher temperature than the glass transition temperature. This is called “thermal healing”. Further, the healing phenomenon can be observed by immersing a polymer into a specific solvent, the so-called “solvent healing”, which is attributed to enhanced mobility by plasticization. Moreover, a weak gel having a lot of dangling chains exhibits the self-healing behavior without any manual intervention because of the interdiffusion of the dangling chains. The dangling chains have to be longer than the entanglement molecular weight to show good healing efficiency. Keywords: Entanglement Couplings / Dangling Chain / Thermal Healing / Solvent Healing / Weak Gel |
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| 话题 |
| 利用高分子微粒/液晶复合凝胶的光响应性修复材料的开发 | 山本贵广,吉田 胜 |
| <Abstract>
A novel optically healable material was developed from a microparticle/liquid-crystal composite gel containing a small amount of a photochromic azobenzene dye. The composite with appropriate particle concentrations existed in the gel state in the nematic phase owing to the formation of particle networks in the host liquid crystal. We demonstrated the photochemical repairing of a damaged section of a particle/liquid-crystal gel by the site-selective gel-sol transition induced by the photochemical modulation of the host liquid-crystal phases. Keywords: Liquid Crystals / Colloids / Gels / Self-Assembly / Self-Repearing Materials / Photoresponsive Materials |
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| 自我修复性高分子水凝胶 | 原口和敏 |
| <Abstract> A nanocomposite hydrogel (NC gel) consisting of a unique polymer/clay network structure, can exhibit complete self-healing through autonomic reconstruction of crosslinks across a damaged interface. Mechanical damage in NC gels can be repaired without the use of a healing agent, and even sections of NC gels separated by cutting, from whichever the same or different kinds of NC gel, perfectly (re-)combine by just contacting the cut surfaces together at mildly elevated temperatures. Keywords: Self-Healing / Hydrogel / Nanocomposite Gel / Mechanical Property / Clay / Organic-Inorganic Network |
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| 利用氢键的可回收性橡胶材料 | 冈松隆裕, 松田 淳 |
| <Abstract> Vulcanized Rubber has been used in many application such as Tires, Belts and Insulation materials. The excellent physical properties mainly depend on the network structure. However, this structure also results in the problem that recycle is not easy. Our recent R&D reveals that introducing hydrogen bonding units introducing into the rubber structure solves the trade-off relations between physical properties and recyclability of vulcanized rubber. The most effective hydrogen bonding unit was shown to consist of the maleic anhydride and heterocyclic amines, in particular, carboxylic acid and amidotriazole groups. The Stress-Strain curve of Isoprene rubber modified with hydrogen bonding units is corresponding to the sulfur vulcanized rubber, so that this technology was considered to be useful for existing markets with better recyclability. An application to the puncture-less tire for wheelchairs is shown here as a typical example. Keywords: Thermoreversible Polymer / Hydrogen Bonding / Recyclable Material |
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| 利用聚氨酯技术的汽车涂料用自我修复透明罩漆的开发 | 重森友和 |
| <Abstract> The wide variety of clear coatings has been adopted in automotive industry. Polyurethane clear coatings were established as one of the important technologies that achieve excellent film appearance, durability and chemical resistance. Clear coats have been required to improve not only film appearance, etch resistance but also scratch resistance. Scratch resistant clear coatings based on polyurethane technology have already entered the market. These clear coatings meet great scratch resistance caused by high cross-linked film with polyols and polyisocyanates. Polyisocyanates crosslink the polymer and have an influence to heal the scratch-damages. Especially, high functional polyisocyates are strongly effective to achieve excellent scratch resistance. Keywords: Clear / Scratch / Automotive / Urethane / Isocyante / Functionality / Hydrogen Bond |
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| 高分子科学与我: 个人独白 |
| 过桥 | 藤井修治 |
| <Abstract> Looking back on how I arrived at the idea of “structural rheology”, the rheological behavior coupled with the structure change induced by the external fields. We are developing new topics in the non-equilibrium soft matter physics. Crossing the bridge explores new directions in my research topic. |
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| 高分子科学最新进展 |
| 关于凝胶及高分子3D打印机的10个话题 | 古川英光 |
| <Abstract>
现今人们十分关注3D打印机技术.去年10月份出版的日译版克里斯安德森的“Makers: 新工业革命”一书引起了业界的一番轰动.我们团队也是从2009年开始着手开发3D凝胶打印技术(动画),但我们也没有料到3D打印技术的潮流来得这么迅猛.让我们一起关注一下此项技术的研发现状. Keywords: Synthesis / Processing / UV Irradiation / Additive Manufacturing / 3D Printer / 3D Scanner |
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