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121.
122.
推光漆是中国漆文化的重要组成部分。历史地看 ,推光漆注重人的德性培养、技气培养、美善培养和物化质量。推光漆的前人名之为“推光漆精神。”这种精神沿续甚久。在改革开放初期依然存在。失落推光漆精神始于二十世纪九十年代之初 ,企业承包 ,实行厂长 (经理 )责任制 ,抓经济放在了首位。抓经济 ,没有错 ,要富国强民 ,非走这条路子别无选择。问题是有些顾此失彼。其所失 ,那就是党的领导大大削弱 ,工会成了“喝凉水搭筷子” ,“职工之家”的牌子也摘了。几乎放弃了政治思想建设 ,放弃了爱岗敬业教育 ,放弃了推光漆精神。说是推光漆 ,若不说… 相似文献
123.
本文由无限稀释活度系数求取混合物MH-81状态方程的二元相互作用参数,预测了二元混合物的汽液平衡,获得了较满意的结果。 相似文献
124.
A photopolymerization process at room temperature was devised to copolymerize vinyl acetate (VAc) and n‐butyl acrylate (BA) mainly to prepare rubber‐like damping sheet bearing pressure‐sensitive adhesive property in this study. The investigations using both the differential scanning calorimeter and rheometric dynamic analysis show the existence of two glass transition temperatures for each copolymer. The scanning electron microscopic pictures reveal that the degree of microphase separation increases with increasing annealing time at 70°C. It was suggested that the rubbery domain (formed by the PBA blocks) disperses in the glassy domain (constituted by the PVAc blocks), making an effective damping entity. Excellent damping was observed for the copolymer samples, with the tanδ peak values as high as 1.76–1.80 at a certain temperature range and with tanδ> 0.3 at quite wide temperature ranges. In addition, the copolymers containing more VAc tend to have the higher damping. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 91: 1396–1403, 2004 相似文献
125.
侯纪蓉 《精细与专用化学品》1999,(20)
由于我国染料及中间体行业近三十年来发展迅猛,而染料企业大多数是小型厂,染料品种繁多,在化工系统中,这一行业目前几乎是污染最严重、污染面最大、治理最差的。同时,一些发达国家把污染重、难治理的产品关停,转向发展中国家生产,染料中间体便是其中之一。所以我国大量的小型乡镇企业治理难度就更大了。不同染料生产原料、工艺过程不同,所排“三废”即有共同的特性,又有各自特点,因此需要针对各自的不同分别处理。本文从废气、有机废液和废渣、废水三方面详细叙述了工业上常用的治理方法及适用条件。并例举了几类排放量较大的废水的治理方法。 相似文献
126.
The study on the dynamic viscoelastic properties of grafted carbon black (g‐CB) filled low‐density polyethylene (LDPE) was carried out. Because of formation of CB networking, the characteristic modulus plateau and loss tangent arc appears. Addition of grafting monomer like butyl acrylate (BA) and acroleic acid (AA) enhances the interaction between particles and matrix due to accelerated formation of micronetworking in the composites induced by forming branch chains of AA and BA with multiunit. The decrease of the temperature corresponding to αc mechanical relaxation together with AA (BA) addition given by the position of loss tangent (tan δ) peak for LDPE is owed to the formation of long‐chain polymer grafted between CB and the matrix, which facilitates the slip of the lamella of LDPE. The influence of maleic anhydride (MA) on enhancing interaction between LDPE and CB is not so pronounced, as compared with AA and BA because of no formation of long chain between CB particle and polymer matrix. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 4127–4132, 2006 相似文献
127.
Yuxin Yin Zhengguo Jin Feng Hou Xu Wang 《Journal of the American Ceramic Society》2007,90(8):2384-2389
Titanium dioxide (TiO2 ) nanotube arrays were prepared by electrochemical anodization of titanium sheets in the glycerol 176 mL/H2 O 44 mL/NH4 F 0.5 wt% electrolytes modified with H2 SO4 and NaAc addition. The surface morphologies, average inner diameter, and the length of the nanotube arrays changed with the solution pH in the range from 5.6 to 4.0 by adding H2 SO4 . A uniform surface morphology of the nanotubes with average inner diameter of ∼80 nm and a length of ∼1000 nm was obtained when the solution pH was 5.0. The growth rates of the nanotubes were remarkably enhanced by NaAc addition in the range of 0.04–0.14 M . With NaAc addition of 0.10 M , the length of the nanotube arrays reached 4.16 μm after an 8-h anodization, increasing 3.23 μm compared with no NaAc addition. The relationship between solution pH and growth of TiO2 nanotubes was analyzed by current–time curves, solution electrical conductivities, and scanning electron microscopy (SEM), and the role of NaAc was also discussed based on SEM and solution electrical conductivities. 相似文献
128.
侯丽娟 《网络安全技术与应用》2014,(11):132-133
随着SG186系统建设不断向企业的覆盖与延伸,信息网络的强健与否成为制约信息化系统应用的重要因素。本文通过对网络冗余技术的介绍,结合公司信息网络结构实际情况,通过应用实例分析,阐述如何合理使用网络冗余技术,确保信息网络的高可靠性。 相似文献
129.
Two new poly(p‐phenylenevinylene) (PPV) derivatives containing oxadiazole moiety (OXA‐PPV1 and OXA‐PPV2) were synthesized by the Wittig condensation polymerization reaction. Their thermal and light‐emitting properties were investigated. The single‐ and triple‐layer electroluminescent (EL) devices with configurations of ITO/polymer/Al and ITO/polymer/OXD‐7/Alq3/Al were fabricated. They exhibited blue emission at 470 nm for OXA‐PPV1 and green emission at 560 nm for OXA‐PPV2. The turn‐on voltages of triple‐layer device were 11 V for OXA‐PPV1 and 8 V for OXA‐PPV2. The triple‐layer EL devices showed much better performance than did the single‐layer devices. The spectra indicated energy transfer occurred from segments of side chain to polymer backbone. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 422–428, 2002 相似文献
130.