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本文主要研究了助剂TS对特深型活性染料染色性能的影响。本实验通过助剂TS用量的变化以及加入助剂TS时染色工艺的改变,来研究助剂TS对活性染料性能(固色率、色光、色牢度)的影响,以求得助剂TS对活性染料染色时存在缺陷的改善。 相似文献
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橡胶工业对助剂的需求吕百龄作为橡胶工业四大原料之一的橡胶助剂,在改进产品质量、改善加工性能和提高生产效率方面,发挥着显著的作用。橡胶工业的发展,产品的不断高性能化,依赖于橡胶助剂在产量上的满足和新品种的研究开发。橡胶助剂发展概况我国的橡胶助剂工业是建... 相似文献
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油田助剂产品的种类多样,在油田开发过程中发挥了不可替代的作用。随着我国对能源的需求不断增长,相应的油田助剂产业也在蓬勃发展,已经形成了一定的开发规模,对油田开发与油气运输起到了不可忽视的促进作用。随着科学技术的不断发展,新产品的开发已经提上了油田助剂产业的发展日程,因此对助剂产品的开发与前景分析对油田助剂产业的进一步发展具有重要的现实意义。本文首先分析了油田助剂的重要性,然后探讨了石油助剂开发的主要品种,最后详细阐述了产品开发应用前景。 相似文献
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1、概述纸浆模压快餐盒是指使用漂白浆板(木浆、草浆等)经过处理,浆内添加助剂,利用特殊的成型、干燥设备,模压成型的一次性使用的快餐盒,是目前消除白色污染,替代发泡塑料快餐盒的理想的产品。由于中国快餐食品有汤有水,因此对快餐盒的防油、防水性能要求极高。然而,由于许多生产厂家对生产纸浆模压快餐盒的原料、助剂的特性不十分了解,对防油、防水剂选择不当,致使许多厂有的产品防油、防水性能不稳定,严重影响了产品的质量和声誉。笔者近年来一直从事纸浆模压快餐盒的生产工艺技术设计及技术服务,积累了一点实践体会,现奉… 相似文献
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当前国际纺织印染工业发展日新月异,高新技术不断注入,新纤维不断涌现,产品朝着高档、舒适、健康及生态绿色方向发展。纺织印染助剂的发展趋势有四大方面:根据新纤维的发展开发相应配套助剂;采用复配技术,增加助剂的多功能性和高功能性;利用高新技术产品来补充和完善传统的纺织印染助剂产品;开发环保型助剂。为适应新的发展趋势,纺织印染行业期待新型血液来填充。含氟织物整理剂近年来随着人民生活水平的提高和纺织印染工业的不断发展,对含氟织物整理剂的需求逐年增长,但国内目前尚无生产厂家,用户所需产品均靠进口。浙江大学化工系的科研人… 相似文献
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潘文琪 《石油工业技术监督》2012,28(5):59-60
根据中国石油天然气集团公司化工产品质量抽检实例,着重分析了产品采购标准、生产标准、检验标准间差异对油田化学助剂产品质量判定结论造成的影响。提出了采用规范统一的标准,科学衡量油田化学助剂质量的意见和建议。 相似文献
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A change in the normal routine at a factory, which produced a cellulose-based product, necessitated taking the individual blocks of material from a hot curing process (ca. 200°C) and packing them before they had cooled to an appreciable extent. Spontaneous ignition took place in the packaged material some hours later. Considerable damage to buildings and other losses were incurred. The ambient temperature within the store was not sufficiently high to cause thermal ignition. The problem proved to be a special but not necessarily unusual case in which the onset of ignition was governed by the initial temperature of assembly of the packaged material. These circumstances have been recognized in the fibreboard manufacturing industry for example, such that US legislation requires the cooling of newly manufactured boards below a specified temperature before stacking takes place [1]. We discuss the theoretical background to this type of problem, based on an adaptation of thermal ignition theory with conductive heat transport (Frank-Kamenetskii conditions). We obtained the appropriate kinetic and thermochemical parameters for exothermic reaction in a cellulosic material in order to apply the theory. We were then able to calculate a maximum packing temperature to expedite safe but efficient storage or transport. The numerical calculations to solve the spatial and time dependent energy conservation equations by use of the finite difference method required a three dimensional grid, set up as 203 mesh points, equivalent to cube-shaped, packaged material in the practical application. Most of the calculations were performed on a personal computer. 相似文献
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本研究采用流变动力学来表征UV固化体系的固化性能,使用装有UV固化配件的流变仪,实时监测光固化过程中UV固化体系动态弹性模量G'的变化,考察了单体的种类、含量对固化体系性能的影响。并将流变转化率β与体系动态弹性模量G'关联起来,进一步推导出可以描述固化反应的非线性动力学方程。结果表明:UV体系固化过程中,单体官能度越大,样品G'值越快达到平衡,固化速率越快;单体含量越高,G'达到平衡状态所需时间越长;实验推导出的非线性动力学方程使用流变转化率β表征UV固化体系固化反应进行的程度,使用dβ/dt表征UV固化体系的固化速率,通过实时红外测试验证了该方程的可行性。 相似文献
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采用新的管式反应器装置代替釜式反应器,将生产7-ADCA和7-ACA的副产物六甲基二硅醚有效地转化成了三甲基氯硅烷。与釜式反应器相比,管式反应器装置省去了搅拌,简化了生产工序,减少了催化剂的损失,增大了催化剂重复使用次数,操作简便,催化效率高。对反应条件进行了优化,在n(六甲基二硅醚)∶n(氯化锌)为1∶0.06、反应温度为-2~0℃、反应时间为3 h、通氯化氢速度为20 mL/min条件下,三甲基氯硅烷收率高达86.8%。 相似文献
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David J. Frurip 《Process Safety Progress》1992,11(4):224-228
The CHETAH program has proven to be of great utility in the assessment of reactive chemicals hazards associated with the development of new chemicals and chemical processes. At the Dow Chemical Company, the most frequent use of the program is for the estimation of heats of reaction. Reaction heats are often the single most important parameter in reactive chemicals evaluation since most “worst case” scenarios involve the instantaneous liberation of the reaction energy. Another common use of the program is using CHETAH's unique capability to predict the “explosive” behavior of a material or mixture solely from a knowledge of its molecular structure. Several examples of day-to-day use of the program are presented. Current development activity in the ASTM subcommittee which supports CHETAH are discussed. These include new hazard evaluation criteria, better thermodynamic property estimation techniques, and user friendly versions of the program. 相似文献