Author Keywords: Water treatment; Adsorption; Heterogeneous catalysis; Hydrodechlorination; Activated carbon; Granular; Fibrous cloth; Hydrodenitrification; Glass fiber cloth 相似文献
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本发明涉及一种丙烯酸纳米微乳液和采用丙烯酸纳米微乳液制造的水性热反射隔热涂料,以及丙烯酸纳米微乳液和水性热反射隔热涂料的制造方法,名称为丙烯酸纳米微乳液、水性热反射隔热涂料及其制造方法。为解决现有的涂料因含有大量有机溶剂会造成环境污染,并且热反射和隔热性能差的技术问题,本发明水性热反射隔热涂料,其原料含有:丙烯酸纳米微乳液、常规丙烯酸乳液、颜料、填料、红外线反射剂、助剂、pH调节剂、增稠剂、软化水, 相似文献
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以自制的无皂苯丙乳液配制了性能优越的耐水内外墙涂料,着重讨论了十一烯酸钠和碳酸氢的用量、单体比,聚合工艺条件及加入有机溶剂对这种涂料性能的影响。 相似文献
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丙烯酸酯无皂乳液的研究 总被引:4,自引:1,他引:4
在甲基丙烯酸甲酯和丙烯酸丁酯的无皂乳液体系中,加入适量的自制聚氨酯型反应性乳化剂(URE),考察单体配比和有机溶剂对乳胶膜性能的影响,并研究了聚合物乳液的稳定性。结果表明:与传统乳液聚合体系相比,所合成的胶乳耐电解质、耐酸碱、耐有机溶剂的性能均好。 相似文献
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共固化成型无人机用复合材料/蜂窝夹层结构面板的性能 总被引:3,自引:3,他引:0
针对无人机结构工程设计和工艺方案需要,通过试验比较几种预浸料在共固化成型工艺状态下制备的蜂窝夹层结构面板与在相同固化工艺条件下制备的层压板的力学性能,得出可直接采用共固化工艺制造无人机飞机机体结构的结论.性能结果显示,由所选择的适用于共固化工艺的预浸料所制备的面板与层压板试样的力学性能基本是相当的,但面板的层间剪切强度却明显比层压板的低. 相似文献
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为满足复合材料低成本制造需求,研发出了一款适用于非热压罐(out of autoclave, OOA)成型工艺的环氧树脂LCE201。采用热熔法制作预浸料,将预浸料分别用热压罐和OOA成型工艺制作层压板。比较了两种成型工艺制作层压板的物理和力学性能,结果表明,两者性能相当。使用该预浸料采用OOA成型工艺制作某无人机U型后墙制件,制件厚度及无损结果满足指标要求。 相似文献
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水性乳液—聚氨酯系粘合剂 总被引:2,自引:0,他引:2
水性乳液——聚氨酯系粘合剂为单组份反应型热固性体系,是木材工业用理想粘合剂,特别适用于复合层压板制造、木质装饰膜的复合和颗粒板压制。本文介绍了聚乙烯醇水溶液——聚氨酯系粘合剂和聚乙烯醇水性乳液——聚氨酯系粘合剂的组成、配方举例、贮存稳定性及应用效果 相似文献
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采用特殊烧制工艺制得的优质竹炭,比表面积高达700m^2/g。将竹炭制成0.5~100微米的超细微粉,与多种高分子材料结合,可制成许多种高分子复合材料——各种具有不同性能、不同用途和不同类型的炭布,这些炭布具有极好的催化活化、吸附分解、吸湿干燥和除臭抗菌等性能。利用这些炭布,已成功地开发了一系列功能产品。 相似文献
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Opportunities and problems in application of catalytic hydrotreating processes, which are presented a viable approach in the abatement of water pollutants, are discussed. Analysis of the hydrodechlorination (HDC) and hydrodenitrification (HDN) using Pd-based catalysts supported on various materials like granulated activated carbon (GAC), fibrous activated carbon cloths (ACCs) or glass fiber cloths (GFCs) studied recently in our laboratory suggests the following perspectives:
Exhaustive regeneration of Pd/GAC saturated with p-chlorophenol can be achieved in a two-step approach, incorporating gas-phase HDC by hydrogen followed by oxidation by air.
Pd/ACC catalysts are good candidates for the liquid-phase HDC showing activity higher than that of Pd/GAC or Pd/GFC; the high adsorption capacity of Pd/ACC lead suggesting its use in a technology with periodic adsorption and HDC, in similarity to adsorption with regeneration of GAC.
Pd/GFC and Pd–Cu/GFC are promising catalyst for removal of nitrites and nitrates, showing activity and selectivity that compares favorably with those of powdered catalysts.
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以不饱和聚酯树脂(UPR)为基体,玻纤布、苎麻布及碱式硫酸镁晶须为增强材料。采用模压工艺制备复合
材料。研究了不同复合材料在30℃及50℃水中浸泡时间对其吸水率及其力学性能的影响。结果表明,所有复合材料
的吸水率均随着浸泡时间的延长而逐渐增加,且在起初的0~8h时快速吸水,之后趋缓或不变|50℃时的吸水率总是
高于30℃时的吸水率|玻纤布对UPR的增强效果明显优于苎麻布|与晶须混杂后将降低玻纤布或苎麻布增强聚合物复
合材料的拉伸强度和冲击强度,但却将增加弯曲强度和拉伸模量|随着浸泡时间的延长,玻纤布增强或玻纤布与晶
须混杂增强复合材料的拉伸强度在30℃和50℃时均将下降|苎麻布增强复合材料的冲击强度分别在30℃和50℃水温
浸泡16h时达到最大值,分别为49.1kJ/m2 和48.8kJ/m2,比浸水前的冲击强度分别提高98.78% 和97.57%,而苎麻布
与晶须混杂增强复合材料在两个试验温度下的冲击强度均随着浸泡时间的延长而单调增加。 相似文献
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M. A. Khan M. N. Islam K. M. Idriss Ali 《Polymer-Plastics Technology and Engineering》2013,52(2):299-315
Ten different formulations were developed with urethane acrylate oligomer in combination with a number of functional monomers in the presence of additives, fillers, and plasticizers. Polymer films were prepared with these formulations under ultraviolet (UV) radiation. Physical and mechanical properties of these cured films were studied. Hessian cloths of jute fibers were coated with these formulated solutions and irradiated under UV radiation. Physical and mechanical properties of both treated and untreated hessian cloths were determined. Loss of tensile properties of the samples by weathering treatment was also determined in order to ascertain the best formulation to be applied on the hessian cloth for the improvement of its physicomechanical properties. 相似文献
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介绍了以PVC糊树脂为主要原料,采用贴合刮涂法生产新型材料——发光灯箱布的工艺。发光灯箱布综合性能优良,方便实用,将推动广告业的发展,市场前景很好。 相似文献
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《分离科学与技术》2012,47(6):1061-1075
Abstract In this work the effect of the activated carbon cloth surface acidity and pH of the solution on phenols adsorption has been studied. Two phenols, widely different in the terms of their pKa values (phenol and 2,4‐dinitrophenol), have been chosen as the model compounds. It has been shown that phenol adsorption was favored by low pH values of solution and high point of zero charge values of activated carbon cloths. The adsorption of 2,4‐dinitrophenol was promoted at very low pH values of solution and it was less influenced by activated carbon cloth surface acidity. 相似文献
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讨论了在HV452型纺丝机上采用2808孔喷丝板生产用于防水卷材基布的涤纶短纤维的生产工艺,指出提高成品纤维的强度、断裂伸长率、降低干热收缩率是满足防水卷材基布性能要求的关键。 相似文献