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Thin films and multi-layered coatings comprised of different classes of materials are often used for various functional devices.
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In addition, the residual stress distributions in the functionally and compositionally graded coatings were also analyzed.
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Carbon fibres (CF) were modified with different oligomeric silsesquioxane (SSO) coatings to improve the interfacial property of carbon fibres/polyarylacetylene (CF/PAA).
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The results show that the ILSS increases effectively and the effects on interfacial characterizations are distinguished from each other in accordance with the CF surface modified with different SSO coatings owing to the various structures.
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AFM observations lead to the conclusion that an interfacial transition layer with different morphology and stiffness appears in CF/PAA composites after being treated by the SSO coatings of different structures.
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| This paper introduces a new type of water-proof magnet wires used for water immersed electric machines. It, at first, describes the general properties of polyimide and polyimide-imide and the ageing mechanism of polyimide water-proof wires with investigations in practice, and then, studies the influence of the coating of the conductor of water-proof wires on ageing, and presents, on the basis of the theory of "water-treeing", the mechanism of the coating which will prolongate the life of water-proof... This paper introduces a new type of water-proof magnet wires used for water immersed electric machines. It, at first, describes the general properties of polyimide and polyimide-imide and the ageing mechanism of polyimide water-proof wires with investigations in practice, and then, studies the influence of the coating of the conductor of water-proof wires on ageing, and presents, on the basis of the theory of "water-treeing", the mechanism of the coating which will prolongate the life of water-proof wires. The paper thus points out the relevant properties that a good coating should posess and the reasons why polyimide coating can prolongate the life of waterproof wires, and finally, it proposes some questions that should be paid attention to in technological process. | 本文介绍了一种新型的潜水电机用耐水电磁线,首先介绍了聚酰亚胺和聚酰胺亚胺的一般性能特点和亚胺耐水线的老化性能及实际考核情况,接着探讨了耐水线线芯表面的涂层对于耐水电磁线寿命的影响,并结合试验研究在水中树枝理论基础上提出涂层延长耐水线寿命的作用机理,从而指出作为良好涂层应当具备的条件和亚胺作为涂层能延长耐水线寿命的原因,以及指出在工艺上应当注意的一些问题。 | In this article are presented the experimental results of a new type of semi-conducting coating used as the insulation shield of high voltage plastic power cables.In recent years semi-conducting coating technology has been developed for the insulation shield of high voltage plastic power cables. Our experimental work shows that the semi-conducting coating possesses better shield effect. The cable insulation shielded by the semi-conducting coating would have higher dielectric strength and corona (treeing discharges)... In this article are presented the experimental results of a new type of semi-conducting coating used as the insulation shield of high voltage plastic power cables.In recent years semi-conducting coating technology has been developed for the insulation shield of high voltage plastic power cables. Our experimental work shows that the semi-conducting coating possesses better shield effect. The cable insulation shielded by the semi-conducting coating would have higher dielectric strength and corona (treeing discharges) level, i.e. the semi-conducting coating greatly improves the insulation characteristics of the cable. It is also shown that the volume resistivity of a good shield coating should be in the range ρ_v≤10~5Ω, cm.The semi-conducting coatings developed in our laboratory, such as Compound 76-1 and Compound 78-1, may be satisfactorily used as the insulation shield for the plastic power cable. These coatings are cheap in cost, simple in application and excellent in shield effect. | 本文介绍一种新型的高压塑料电力电缆用绝缘屏蔽半导电涂层的研究结果。试验研究表明,半导电涂层具有良好的屏蔽效果。应用半导电涂层的绝缘屏蔽电缆具有较高的介电强度和耐电晕水平(抑制树枝放电),它改善了绝缘特性。同时还表明,良好的屏蔽涂层应具有体积电阻系数ρ_v≤10~5Ω·cm。我们研究配制的半导电涂层配方76-1和78-1能够满意地推广使用于塑料绝缘电力电缆的绝缘屏蔽,这种屏蔽涂层价廉、操作简便、屏蔽效果良好。 | The article is describing the research on the selective absorptive coating of PbS.Use 0.1μm of dendritic PbS as absorber, and with EPDM or F resin as binder, mixing up to be the paint. Spraying it on the aluminum plate or zincplating iron plate up to the thickness of about 0.6mg/cm2, the result will be a selective absorptive coating of a = 0.85-0.91, ε = 0.23-0.40. It's heatproof up above 280℃. This article makes an emphatic research on the basic factors which will exert an effect on the index of... The article is describing the research on the selective absorptive coating of PbS.Use 0.1μm of dendritic PbS as absorber, and with EPDM or F resin as binder, mixing up to be the paint. Spraying it on the aluminum plate or zincplating iron plate up to the thickness of about 0.6mg/cm2, the result will be a selective absorptive coating of a = 0.85-0.91, ε = 0.23-0.40. It's heatproof up above 280℃. This article makes an emphatic research on the basic factors which will exert an effect on the index of coating. | 用0.1μm枝蔓硫化铅作吸收剂,用乙丙橡胶或氟树脂作粘合剂,配制成涂料,喷涂于抛光的铝板或镀锌铁皮上,涂层厚度在0.6mg/cm~2左右,可获得α=0.85—0.91,ε=0.23—0.40的选择性吸收涂层,涂层耐热达280℃以上。本文重点讨论了影响涂层指标的几个主要因素。 | | | | << 更多相关文摘 |
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