专业英语(英语科技论文results写法).ppt
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1、Results and discussion,专业英语报告,Table of Contents,Results,一般而言,结果部分的内容包含下列三个主要项目:介绍研究结果,往往以一个句子指出反映完整研究结果的图表。概述最重要的研究结果。对研究结果作出评论或概括由这些结果得到的推论。以上三个项目可能含在几个段落中多次出现。而且每个段落通常由这三个项目组成,段落的第一句为第一个项目,第二个项目是段落的主要部分,第三个项目则是由段落的最后的一、两个句子表达。,Example 1,The separator should have uniform pore size distribution to a
2、void performance losses,which is due to uneven current densities.Some research shows that sub-micrometer pore dimensions are critical for preventing internal shorts between the anode and the cathode of the lithium-ion cell,particularly as the separators are as thin as 25 mm or less.The influence of
3、PPTA pulp dosage to the maximum and average pore size of separator is shown in Figure 3.With the increase of PPTA pulp dosage,the maximum pore size and average pore size of the separator remain on a downward trend.When the PPTA pulp dosage reaches 40%,the pore size of the separator is decreased obvi
4、ously.The pore size of the separator can be well controlled to less than 1 mm.,该隔膜应孔径分布均匀,以避免由于不均匀造成性能损失。研究表明,亚微米孔隙尺寸是针对预防性内部的阳极和锂离子电池的阴极之间的短路的关键,特别是隔膜是薄如25毫米或更小的。PPTA浆液剂量对隔膜最大和平均孔径的影响示于图3。随着PPTA浆液剂量的增加,最大孔径和平均孔径都呈下降的趋势。当PPTA浆液剂量达40时,隔膜的孔隙尺寸明显减小,隔膜的平均孔隙尺寸可以很好地控制到小于1mm。,Figure 3.The influence of PPTA
5、 pulp dosage to the pore size of separator.图3 PPTA剂量对隔膜的孔径的影响,Example 2,The pore size distribution of the separators with PPTA pulp dosage ranging from 20%to 100%is shown in Figure 4.It can be seen that the pore size distribution is not continuous.Parts of large pores appear near the maximum pore si
6、ze,and another centralized zone of scatter is near the average pore size.The reason for the discontinuous distribution of the pore size might be that the maximum pore size depends on the coarsest fibers diameter and the defects of nonwoven,but the average pore size depends on the most common fiber d
7、iameter.In Figure 4a,when PPTA content is 20%,there are almost 95%pores in the range of 0.720 10.000 mm,but the maximum pore size of wet-laid nonwoven is 26.923 mm.This means the separator may have some defect such as pinholes and cannot meet the requirement of the separator.In Figure 4 f,the pore s
8、ize distribution of the separator prepared with pure PPTA pulp is shown.There are about 3%of the pores near the maximum pore size of 0.895 mm,and almost 97%of the pores are at the range of 0.118 mm0.500 mm,which indicates that the separators uniformity is improved obviously.PPTA浆液剂量范围从20 到100的孔径分布示于
9、图4。该孔径分布是不连续的,孔径分布最多部位附近出现最大孔径。孔径的非连续分布原因可能是最大孔径取决于纤维的最大直径,但其平均孔径依赖于最常见的纤维直径。在图4A中,当PPTA含量为20,孔隙在0.720m-10.000m的范围内的占95,但此时湿法成网非织造布的最大孔径为26.923m。这意味着隔膜可能有一些缺陷不能满足隔膜的要求:如针孔。如图4 F中,100%纯PPTA量时的孔径分布情况:有97的小孔分布在0.118m-0.500m的范围内,只有3%的小孔分布在最大孔径为0.895m附近。这表明该分离器的均匀性得到明显改善。,Example 2,Figure 4.(a)The influe
10、nce of PPTA pulp dosage to the pore size distribution of separator(PPTA pulp dosage is 20%);(b)The influence of PPTA pulp dosage to the pore size distribution of separator(PPTA pulp dosage is 40%);(c)The influence of PPTA pulp dosage to the pore size distribution of separator(PPTA pulp dosage is 60%
11、);(d)The influence of PPTA pulp dosage to the pore size distribution of separator(PPTA pulp dosage is 80%);(e)The influence of PPTA pulp dosage to the pore size distribution of separator(PPTA pulp dosage is 90%);(f)The influence of PPTA pulp dosage to the pore size distribution of separator(PPTA pul
12、p dosage is 100%).(A)PPTA浆液用量为20(B)PPTA浆液用量为40(C)PPTA浆液用量为60(D)PPTA浆液用量为80(E)PPTA浆液用量为90(F)PPTA浆液剂量为100,Example 3,From Figure 7,the tear index increases at first and then decreases as the PET fiber dosage increases.This is because,initially,the binder fibers lead to an increase of the bonding streng
13、th of the PPTA fibers and when the PET fiber content reaches a certain point,the bonding fibers form a low tear strength membrane itself.When the PET dosage is 20%,the tear index of the separator is 5.16 mNm2g-1,which is increased by 59%than that of the pure PPTA pulp.Based on the analysis of the po
14、re size and the mechanical properties,the wet-laid nonwoven material whose PET content is 20%is chosen,as a preference,for the following properties study.从图7中得出,撕裂指数随PET纤维含量增大而增加,到达一定剂量后开始降低。这是因为:开始时粘合纤维与PPTA纤维接合,强度开始增加,但当PET纤维的含量达到某一点时,粘合纤维的撕裂强度低隔膜本身的强度,所以撕裂强度开始下降。当PET用量为20时,隔板的撕裂指数为5.16mNm/g,与纯PPT
15、A浆液相比,增大59%。基于前面对孔径和机械性能等性能的分析,可以得出湿法成网的非织造材料中PET含量为20时性能较好又能满足作为电池隔膜的要求,因此对20%PET、80%PPTA混合的非织造材料隔膜的性能进行研究。,Figure 7.The influence of PET fiber dosage to the tear index of separator.图7 PET纤维剂量对隔膜撕裂指数的影响,Example 4,In Figure 10,the LOI of polyolefin membrane and nonwoven material decreases with the i
16、ncrease of temperature.The LOI of the nonwoven separator is higher than that of the polyolefin membrane at the same temperature because of the excellent flame retardancy property of PPTA fiber.,在图10中,聚烯烃膜和非织造隔膜的LOI指数随温度增加而降低。在相同温度下,由于芳纶纤维的优异的阻燃性特性,无纺布隔板的LOI指数是比聚烯烃膜的高。,Figure 10.The LOI of wet-laid n
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