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1.
用双氧水对竹纤维织物进行前处理,低甲醛树脂PS-14对竹纤维织物进行免烫整理.讨论了整理剂用量、焙烘温度、焙烘时间对免烫整理效果的影响;通过测试在不同整理条件下织物的折皱回复角、白度、断裂强力等性能,获得了整理优化条件,即低甲醛树脂PS-14160g/L,柔软剂20g/L渗透剂JFC 1g/L,160℃下焙烘4min.  相似文献   

2.
海藻酸衍生物与柠檬酸混合应用棉织物抗皱整理工艺研究   总被引:2,自引:0,他引:2  
杨立邦  隋淑英  张林  朱平  董朝红 《科技信息》2011,(7):I0025-I0025,I0410
将海藻酸衍生物PGA与柠檬酸混合用于棉织物的抗皱整理,改变PGA、柠檬酸的用量、不同的焙烘温度及焙烘时间,通过测试整理后织物的折皱回复角、白度以及撕破强力等性能确定最佳工艺。结果表明较优工艺条件为:海藻酸丙二醇酯为25g/L,柠檬酸为60g/L,焙烘温度为170℃,焙烘时间150s。  相似文献   

3.
麻棉交织物经液氨处理后,用低甲醛树脂进行免烫整理,对树脂用量、焙烘温度和时间等工艺条件,用中心旋转法进行了优化。整理后织物的释放甲醛量低于75ppm,干折皱回复在270°以上,强力保留值大于70%,达到绿色免烫整理水平。  相似文献   

4.
用γ-氯丙基三甲氧基硅烷与二乙胺反应,经季铵化反应制得抗菌剂GD-1,并对纯棉织物进行抗菌整理,测试整理后织物的抑菌率、白度、断裂强力、折皱回复角等性能.整理后棉织物对大肠杆菌和金黄色葡萄球菌的抑菌率分别为99.74%和99.37%,自制抗菌剂GD-1的最佳应用工艺为:GD-1用量20g/L ,pH=6,80℃预烘,120℃焙烘.整理后的棉织物洗涤50次后,抑菌率仍能保持在80.95%左右.  相似文献   

5.
研究BTCA作为亚麻竹纤维交织织物抗皱整理剂,探讨整理过程中各因素对织物折皱回复角,强力保留率的影响,经正交试验及分析得到亚麻竹纤维交织织物抗皱整理的最佳工艺条件为:BTCA120 g/L,NaH2PO240 g/L,焙烘温度160℃,焙烘时间4 min.试验结果表明,BTCA对亚麻竹纤维交织织物有良好的抗皱整理效果.  相似文献   

6.
采用丁烷四羧酸(BTCA)为压皱定型剂,次亚磷酸钠(SHP)作为催化剂,纳米TiO2作为光催化剂,JFC为渗透剂,制备出一种牛仔服装用无醛紫外光光催化压皱定型整理剂,将其应用于纯棉靛蓝牛仔服装压皱整理,研究经电晕辐照处理后再经高压喷射处理工艺整理牛仔布,讨论BTCA浓度,纳米TiO2浓度,紫外光辐照照射时间,电晕处理电压和电晕处理时间对牛仔布折皱回复角的影响。结果表明:BTCA浓度,纳米TiO2浓度,紫外光辐照照射时间和电晕处理时间对牛仔布折皱回复角影响较大,电晕处理电压对牛仔布折皱回复角影响较小,综合考虑,紫外光光催化定型整理剂对牛仔布的较合适的整理工艺条件为:BTCA浓度125g/L,纳米TiO2浓度0.1%,紫外光辐照照射时间30min,电晕处理电压13kV和电晕处理时间3min。  相似文献   

7.
用中心旋转法设计了防皱整理剂RESIN BRT、拒油防污剂PM-492和氯化镁3个变量、5个水平的20个试验.通过分析试样的折皱回复角、释放甲醛量、撕破强力保留率的等值图,确定了较佳的拒油防污防缩整理工艺:防皱整理剂RESIN BRT 80~85 g/L,拒油防污剂PM-492 40 g/L,MgCl2.6H2O 12~13 g/L,整理液pH值4.2,二浸二轧,105~110℃下预烘3 min,165~170℃下焙烘2 min.整理后衬布的拒水拒油性能达到120分,水洗尺寸变化率为-0.7%,热熔衬布释放甲醛量小于40 mg/kg,折皱回复角大于270°,衬布的质量符合优等品的要求.  相似文献   

8.
采用纳米级TiO2作为壳聚糖柠檬酸溶解的催化剂,对真丝针织物进行抗皱整理.实验结果表明,经壳聚糖柠檬酸溶解整理后,真丝针织物的折皱回复角由207.66°提高到286.88°,并且整理后不影响真丝织物的其他服用性能.  相似文献   

9.
通过单因素和正交试验探讨了甲醇用量、醚化时间、醚化温度以及醚化体系pH值对改性DMDHEU树脂性能的影响.通过测定和分析树脂的羟甲基甲醛含量、游离甲醛含量以及整理后织物的游离和水解甲醛量、折皱回复角、撕破强力等,确定了较佳的甲醇醚化工艺:甲醇用量为DMDHEU用量的36%,反应体系pH值为1.7~1.9,反应温度为50~52℃,反应时间为3.5 h,醚化后树脂的游离甲醛量低于0.3%,整理后织物上游离和水解的甲醛量为38.37 mg.kg-1,折皱回复角较原布提高了近100°,经、纬向撕破强力保留率均高于50%.  相似文献   

10.
用中心旋转法设计了防皱整理剂RESIN BRT、拒油防污剂PM-492和氯化镁3个变量、5个水平的20个试验.通过分析试样的折皱回复角、释放甲醛量、撕破强力保留率的等值图,确定了较佳的拒油防污防缩整理工艺:防皱整理剂RESIN BRT 80~85 g/L,拒油防污剂PM-492 40 g/L,MgCl2.6H2O 12...  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

13.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

14.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

15.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

16.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

17.
There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.  相似文献   

18.
In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.  相似文献   

19.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

20.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

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