However , phenolic plastic ( novolac ) prepared with two - step method is mostly cured with htma and this curing process will release ammonia from htma , which will corrode the copper or brass parts 然而两步法生产酚醛塑料要加入固化剂六亚甲基四胺( htma ) ，而htma分解，残留在塑料制品中的游离氨会腐蚀电器的金属部分。
Abstract : the article described the cleanse treatment technology of the cleaning mixture . put forward using acidizing and polyacrylate to treat waste fluid and reach gb8978 - 88 文摘:介绍了金属表面清洗过程中清洗液的净化处理工艺，提出酸化中和、丙纶毡吸油两步法处理废液，处理后的废水达到了国家废水二级排放标准gb8978 - 88 。
With phosphato - tungstic acid as catalyst and phosphoric acid as dehydrant , n - phenylmaleimide was prepared from aniline and maleic anhydride by two - step method . the yield was 88 . 7 % and the purity was 98 . 2 % 以顺酐和苯胺为原料,磷钨酸作催化剂,磷酸作脱水剂,采用两步法制得n -苯基马来酰亚胺,得到最佳反应工艺条件,产品收率为88 . 7 % ,纯度为98 . 2 % (质量分数) 。
The title mid - etherified melamine - formaldehyde resin was synthesized in two steps and used as a curing agent of water borne paint , the best reaction conditions were investigsted , in ferms of the influence of temperature , time and catalyst 摘要采用两步法合成了用于涂料交联剂的甲醚化三聚氰胺树酯，考察了温度、时间、催化利等因素对交联剂中不同组分含量的影响。
Using the residues from wood conversion of acacia and eucalyptus species as material , the molded decorative particleboard products were manufactured by two - stage process and the relationship between process parameters and properties of products were studied in this paper 摘要以相思、桉树2树种的木材加工剩余物为原料，研究两步法刨花模压板的制造工艺以及各工艺参数与板材性能的关系。
The nanocomposites with exfoliated structure composed of low density polyethylene ( ldpe ) , of organically modified montmorillonite and ethylene vinyl acetate copolymer ( eva ) were prepared through two steps melt intercalating technique using a twin - screw extruder 采用两步法熔融插层工艺，在双螺杆挤出机上制备了以乙烯?醋酸乙烯共聚物( eva )为增容剂的低密度聚乙烯( ldpe )基蒙脱土纳米复合材料。
C - bn with higher adherence was synthesized on si ( 111 ) substrate by the two - step approach , the substrate temperature or the bias voltage as a parameter of particular interest was reduced when switching working gas from ar in the first to mixed ar n2 in the second step 该两步法将沉积过程分为成核和生长两个阶段，第一步转换第二步，工作气体由ar气变为ar和n2的混合气体，同时衬底温度和偏压降为较低的值。
When damaged elements increase at the same time and the number of element is much more than that of measured modes , the sensitivity analysis method can ? give desired results . therefore , a method which can identify damage though two steps , location and extent , is put forward 当结构中同时损伤的单元数目较多，以及结构单元数目远大于实测的模态阶数时，灵敏度分析法的识别结果严重下降，本文提出损伤识别的两步法，将结构的损伤分为定位和定量两个步骤，有效地改进了识别效果。
Because of the difference of density , the particle with big conductivity factor will subside in the organic phase change materials , so the orginic phase change materials were solided . the best technology was determined , which the solidation fatty alcohol was made by two steps , the solidation temperature is at 80 , and the proportion of fatty alcohol : fatty acid : sodium hydroxide is 96 : 3 : 1 由于密度差的存在，高导热系数粒子在有机相变贮能材料中会产生沉降，为了克服这一现象，对有机相变贮能材料进行了固化研究，确定了制备固化十二醇的最佳工艺条件，即采取两步法、固化温度为80 、添加比例为十二醇：硬脂酸：氢氧化钠= 96 ： 3 ： 1 (质量比) 。
The preparation of gold nanoparticles and the study of their surface plasmon resonance we had preparated gold nanoparticles of different size through two - step approach , one - step approach and seeding growth approach . uv - vis image and tem image indicated that surface plasmon resonance absorbance had a red shift with the argument of the sizeof the gold nanoparticles . 2 金纳米粒子的制备及其表面等离子共振吸收特征我们分别用两步法、一步法和晶种法三种不同的方法制备了小、中、大三种不同粒径的金纳米颗粒，用紫外可见吸收光谱和透射电子显微镜进行表征。
