共查询到20条相似文献,搜索用时 91 毫秒
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助剂在塑料包装材料中的应用及发展 总被引:3,自引:0,他引:3
介绍了塑料助剂的种类及作用,塑料包装材料的发展以及助剂在包装材料中的应用;指出了助剂在塑料包装材料中的重要作用,同时对未来塑料助剂的发展进行了预测。 相似文献
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孝玉芹 《玻璃钢/复合材料》1988,(2)
一 前 言 提高玻璃钢制品的表面光洁度及光泽度,使其外观光亮而美观,是改善玻璃钢制品的质量,提高玻璃钢制品的竞争能力的重要课题之一。欲改善玻璃钢的表面光洁度及光泽度,除选择优质的原材料及在制造工艺方面进行改进外,配套的优质加工助剂也是必不可少的,如模具清净剂、脱模剂、模具抛光剂等。国外此类塑料加工助剂品种甚多,配套性强,选择余地大,而且塑料加工助剂作为精细化工产品其 相似文献
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本刊北京消息(2009年9月27日)为了适应经济建设发展的需要,促进我国塑料助剂行业整体水平的提高,介绍行业动向及最新技术进展,加强塑料助剂行业业内及与相关行业相互间的交流,中国塑协塑料助剂专业委员会定于11月1~4日在北京华都饭店召开“塑料助剂专委会年会暨2009年塑料助剂生产与应用技术、信息交流会”。 相似文献
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铝电解电容器工作电解液添加剂及其应用 总被引:1,自引:0,他引:1
文章概述了铝电解电容器的发展趋势,以及影响铝电解电容器性能的主要因素;简要介绍了铝电解电容器工作电解液的作用,以及工作电解液主电解质的发展历程;详细介绍了铝电解电容器工作电解液添加剂的作甩;对工作电解液添加剂的分类、作用机理及其应用进行了全面的分析;最后对铝电解电容器工作电解液添加剂的研究进展进行了概括。 相似文献
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简述了近几年全球及中国塑料添加剂行业的发展状况,阐明了国内外塑料添加剂生产企业应对竞争的措施,详细分析了环保化、原材料价格、市场需求、技术革新、产品功能细分等影响塑料添加剂发展的重要因素,分别列举了光稳定剂、抗氧剂、阻燃剂、抗静电剂等添加剂的技术热点问题。 相似文献
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在钢筋混凝土结构服役过程中,由环境侵蚀因素导致的耐久性问题是制约结构长效服役的重要原因,其中,氯离子侵蚀导致的钢筋锈蚀是引起钢筋混凝土耐久性劣化的主要因素之一。在混凝土内掺加防腐添加剂,可从促进钢筋表面成膜和改善混凝土自身性能(孔隙结构、水化过程、Friedel’s盐生成)等方面提升阻锈能力,近年来逐渐成为研究热点。本文将防腐添加剂分为传统阻锈剂、绿色植物提取物阻锈剂、纳米材料以及矿物掺合料等四类,从材料开发、作用机制、阻锈影响因素等方面对防腐添加剂的研究进行了综述。最后,探讨了防腐添加剂研究中存在的问题,并对未来的研究提出了建议,以期为防腐添加剂能够更好地防治混凝土中的钢筋锈蚀问题提供参考。 相似文献
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Heat inactivation of trypsin inhibitor,lipoxygenase and urease in soybeans: Effect of acid and base additives 总被引:2,自引:0,他引:2
Effects of chemical additives on the heat inactivation of trypsin inhibitor (TI), lipoxygenase and urease in soybeans were
investigated. The nutritional value of soybeans increases when antigrowth factors, such as TI, are inactivated. Inactivation
of lipoxygenase enhances palatability and storage stability. Heat inactivation of antinutritional factors during immersion
cooking of dry soymeats was studied without additives. Processing time was varied from 15 min to 2 hr over a temperature range
of 120–212 F. The experiments were repeated, with the addition of NaOH or HCl to the cooking water. Without additives, lipoxygenase
proved to be the most heat labile and TI, the least. With either acid or base additives, the initial inactivation of urease
and lipoxygenase was accelerated significantly; however, while TI inactivation was accelerated by base, it was retarded by
acid addition.
Presented at the AOCS Meeting, Ottawa, September 1972.
ARS, USDA. 相似文献
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J. T. Reilly C. N. Schubert J. R. Lindner M. D. Donohue R. M. Kelly 《Chemical Engineering Communications》1990,93(1):181-191
Absorption rates of carbonyl sulfide and carbon dioxide into aqueous methyldiethanolamine solutions with and without heterocyclic amine additives were measured in a stirred cell apparatus. All of the heterocyclic amine additives catalyzed COS absorption more strongly than that for CO2. In instances in which absorption rates were improved by the additives, those with the lowest pKb's were the most effective, although steric factors also apparently influence reaction kinetics. 相似文献
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综述了钌催化剂上苯选择性加氢的反应机理、催化剂制备过程中前躯体、制备方法、载体、添加剂(水,有机添加剂,无机添加剂)对催化剂催化性能的影响和反应过程中温度、压力、搅拌速率、催化剂用量及反应时间等对苯转化率、环己烯选择性和环己烯收率的影响。 相似文献
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MatthewA. Stephens EricL. Petersen Rodolphe Carro DavidL. Reid Sudipta Seal 《Propellants, Explosives, Pyrotechnics》2010,35(2):143-152
A statistical Taguchi L8 matrix was used to conduct a multi‐parameter study of the use of nanoscale additives in composite solid propellants. The additives studied were TiO2 (titania) and CeO2 (ceria). The other parameters involved in the experiment were the oxidizer loading and distribution, additive percentage and size, additive size (nano‐scale or μm‐scale), and the mixing method. Four baseline propellants without additives were also produced for comparison. The propellants were tested from 3.45 to 13.78 MPa in a strand bomb, and burning rate curves were determined for all formulas. By analyzing the Taguchi matrix, the sensitivity of each parameter according to the pressure sensitivity and burning rate of the propellant was calculated. The dominant factors depend on whether the additive is needed for modifying the pressure index or the absolute value of the burning rate. In general, the effectiveness of the additives was most influenced by oxidizer percentage, oxidizer size distribution, and additive type. The amount of additive, mixing method, and additive size all had relatively minor impacts on the effectiveness of the additives. 相似文献