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1.
This paper proposes a new rapid and efficient method for woolen textile simulation-Cmapping synthesize. This method uses a stochastic function to simulate fuzz on some types of wool textile. The wool yarns are simulated on the basis of Phong illumination model. In order to obtain a visual effect of the wool textile with fuzz, the light intensity of fuzz is synthesized as a color parameter in the Phong illumination model after the yarns have been simulated. The model of woolen textile with fuzz can be built eventually. With synthesis mapping methods, user can choose his favorite fuzz density on the wool by controlling some appropriate parameters.  相似文献   

2.
催化氢化法制备对氨基苯甲醚   总被引:2,自引:0,他引:2  
赵林 《河南科学》2006,24(3):345-346
采用合成氨厂氨合成气代替纯氢气催化氢化对硝基苯甲醚合成对氨基苯甲醚的新工艺,探讨了合成反应条件和对氨基苯甲醚收率的影响规律.在催化剂用量1%,反应温度140℃,反应压力4MPa,反应时间3h的优化工艺条件下,邻氨基苯甲醚的收率达到96%以上.  相似文献   

3.
提出了利用实际分子的键长、键角及二面角计算高分子链构象完全算的方案 ,以自由内旋转的聚乙烯链和聚环氧乙烷链为例进行计算 ,得到了与Flory矩阵方法相同的结果 .本方案得到了每一个质点坐标 ,比Flory矩阵方法得到更多的信息 .与格点计算模型相比 ,本方案可应用到真实分子体系 .  相似文献   

4.
用溶剂汽油、萘烷、石油醚按一定比例复配成混合型溶剂,以对茴香胺为原料,用该溶剂合成了3-磺酸基对茴香胺,产品中不含致癌物.产品收率在82%以上,溶剂回收率在95%以上.  相似文献   

5.
链状冠醚e二芳醛在酸性条件下与氨基硫脲反应,合成了链状冠醚二芳醛缩氨硫脲类化合物,产物由IR,MS和元素分析鉴定了其结构.  相似文献   

6.
含开链冠醚基缩氨基硫脲类化合物的合成   总被引:2,自引:0,他引:2  
链状冠醚二芳醛在酸性条件下与氨基硫脲反应,合成了链状冠醚二芳醛缩氨硫脲类化合物.产物由IR、MS和元素分析鉴定了其结构.  相似文献   

7.
在无水乙醚中,用锂试剂法使2-甲基吡啶类化合物和甲醛反应制得2-(2-羟乙基)吡啶类化合物.后者和二氯亚砜发生取代反应后,产物制成格氏试剂和二烷基卤化铝反应合成了2-(2-吡啶基)乙基二甲基铝、2-(2-吡啶基)乙基二乙基铝和2-[2-(4-甲基)吡啶基]乙基二甲基铝.用1H-NMR(C6D6)和MS作了鉴定.这3个化合物均未见文献报道.  相似文献   

8.
A new method is presented to prevent the wool fabric from shrinking effectively by using cocoon stripping blended with wool fiber. The sericin of cocoon stripping is used as resin to bond the wool fiber together after heat setting. The factors affecting the effect of shrinkproofing is heat setting temperature, wool/cocoon stripping blending ratio, cover factor, regain of fabric. Temperature of heat setting and the blending ratio of cocoon stripping are the two key factors. This method does not pollute the environment, and almost has no damage on wool fiber.  相似文献   

9.
乙酸乙酯合成方法的改进   总被引:2,自引:0,他引:2  
用传统方法制取乙酸乙酯存在以下缺点:有乙醚,乙烯,二氧化硫,乙醛等副产物产生;有机溶剂容易碳化;需要加热到一定温度。鉴于传统方法存在以上缺点,采用乙酰氯代替乙酸作为原料,不使用任何催化剂,不加热,常温反应来合成乙酸乙酯。该方法副反应少,产率高达到60.2%,反应时间缩短,不需要用溶剂,能耗降低,产品的纯化操作较简单。  相似文献   

10.
目的合成一系列含有二氮杂萘酮的新型氟化聚芳醚噁二唑:选择性检测F。方法从分子设计的角度出发,经N-C偶联反应研究最佳合成途径。结果制备了一系列含有二氮杂萘酮类双酚单体的新型氟化聚芳醚噁二唑聚合物。该系列氟化聚芳醚在常见的有机溶剂中具有良好的溶解性,玻璃化转变温度(Tg)在249~285℃之间,表现出良好的热性能。通过研究聚合物的荧光性质,该类聚合物选择性的对F-有吸收,而对Cl-和NO3-没有吸收。结论该系列聚合物适用于功能高分子材料检测F-。  相似文献   

11.
目的合成一种新型既可溶解又耐高温的聚芳醚。方法从分子设计的角度出发,研究最佳合成方法及合成途径。结果合成了一种新型不对称杂环类双酚单体4-(2,5-二甲基-4-羟基苯基)二氮杂萘酮,分别与4种活性双卤单体经芳香亲核取代缩聚,制备了一系列聚芳醚聚合物。该系列聚芳醚特性粘度范围在0.39-0.79dL/g,玻璃化温度在232-284℃,氮气中5%和10%热失重温度分别是421-440℃和434-453℃,表现出良好的热性能。它们均为无定形结构,在室温下易溶于NMP、DMAc、DMF、Py、CHC13等有机溶剂中。结论该方法适宜于合成既可溶解又耐高温的聚芳醚。  相似文献   

12.
处理好洗毛污水的关键是最大限度地提净污水中的羊毛脂。本文介绍了一个回收羊毛脂的新方法——离心萃取法。该方法以制药用的LC—500型离心萃取机为主机,选用抽余油作萃取溶剂,为防止回收的羊毛脂变黑,工艺中改用降膜减压蒸发。该方法回收率为60~70%,比离心分离法高1~2倍。特别适合羊毛脂含量较低的洗毛污水。  相似文献   

13.
本文用20%的NaOH溶液对棉纤维的预处理、醚化、接枝合成工艺进行了优化;在不同条件下,研究了咪唑季铵盐棉纤维对DOSO~-_3的吸附性能.结果表明,用NaOH预处理棉纤维后,在适当的条件下醚化棉纤维素,再用氢氧化钠作催化剂,按3 g环氧基纤维素醚与10 mL甲基咪唑配比接枝,得到白色味唑季铵盐纤维素.用咪唑季铵盐棉纤维对DOSO~-_3进行吸附,吸附率可达91.8%,吸附效果令人满意.  相似文献   

14.
One-bath Dyeing of Polyester/Wool Blend with Disperse Dyes   总被引:1,自引:0,他引:1  
The role of auxiliary LAB as vehicle in dyeing polyester/ wool blends with disperse dyes is described. Dye exhaustion and bonding on polyester/wool samples are studied under different experimental conditions - the LAB amount, the temperature and pH value - to achieve optimum conditions. The results are compared with those obtained with and without conventional dyeing auxiliary products. Although dye exhaustion is higher in the presence of commercial carriers, the dye bonded increases markedly in the presence of auxiliary LAB in both fibers. The role played by auxiliary LAB in polyester/wool blend dyeing can provide a new method for this process.  相似文献   

15.
It is important to measure wool diameter as the wool quality depends on the fibre diameter D and its deviation CVD. According to IWTO standards, the fibre diameter parameters can be tested with the methods of Airflowmeter, DA; Sirolan-Laserscan, DL and CVDL; and OFDA, Do and CVDo. However, these parameters only characterize the average diameter and the variation between the fibres. A single fibre analyzer (SIFAN) can be used to measure fibre profile along the fibre and fibre tensile properties simultaneously. The results obtained from the four methods show that there are i) high relationships between Laserscan values and the results of Airflow, OFDA and SIFAN in the average diameters; ii) correlations between CVDL and CVDo or CVDave; iii) the high correlation between Dave-Dmia but a low correlation between Dave-Dmax; and iv) the relationships between the wool quality and the ratio of Dmln/Dave and Dmin/DL. Based on the results and discussions, the effective measurement of wool diameter should be the SIF  相似文献   

16.
运用傅立叶变换红外光谱(FTIR)技术对羊毛、由该羊毛溶解制成的角朊蛋白膜、再生羊毛和腈纶进行对比分析。通过显微FTIR光谱的特征峰讨论,比较了此类试样在组成和结构上的差别。  相似文献   

17.
对羊毛织物的表面进行了电晕处理,用XPS和SEM研究了处理前后纤维袁面化学结构及物理结构的变化,探讨羊毛的润湿性、表面静电性能和对植物染料染色性能的变化.结果表明,经电晕处理后,羊毛表面舍氧量增多,表面漫润性得到改善,增加了纤维表面的亲水性;此外,电晕处理导致鳞片表层胱氨酸的部分二硫键氧化断裂,改善了对植物染料黄连的染色性能,表现为上染速度提高,但上染率变化不大.  相似文献   

18.
The Biocompatibility of Wool Keratin   总被引:2,自引:1,他引:1  
Keratin is the major structural fibrous protein providing outer covering such as hair, wool, feathers, etc. When being used as a kind of biomaterials, the biocompatibility of wool keratin is one of the most critical questions. By now, there has not been systemic study on the biocompatibiiity of keratin. Therefore, in this article we used the procedures of skin irritation, haemolysis and subcutaneous implantation according to ISO 10993 to study it. Moreover, the Fourier transform-infrared (FTIR) spectroscopy was utilized to analyse the impurity and structure modification of wool keratin film. The part of the animal tests showed that the wool keratin films prepared by authors were biocompatible. But the residual of sodium dodecyi sulfate (SDS) affected the results of other tests. Consequently, the wool keratin membrane is one kind of favourable and promising biomaterial for biomedical and histological utilization. The residual SDS used as an agent should be eliminated from the keratin solution or membrane completely if for biological usage. In conclusion, wool keratin, as a kind of natural protein, prospectively could be applied in biomedical materials and scaffolds of tissue engineering.  相似文献   

19.
介绍了羊毛与苎麻的前处理改性工艺.采用平行纺的纺纱方法在空心锭花式捻线机上开发出了新型长丝包须条的单包与双包结构的羊毛/苎麻复合纱.此复合纱具有结构稳定、条干均匀、毛羽较少、风格独特等特点,为毛织物的轻薄化、凉爽化开辟了新途径.  相似文献   

20.
稀土在毛制品上的应用   总被引:3,自引:0,他引:3  
近年来,稀土元素作为纺织梁整助剂在羊毛纤维、纱线和织物的应用取得了很大进展,其中包括羊毛散纤维、全毛绒线、毛织物及全毛地毯等的染色和漂白,目前的稀土羊毛漂染是在不改变生产工艺流程,不增加加工设备条件下,将稀土作为一种漂染助剂加入染浴或漂浴中,起到染色增深增浓、缓染匀染,七约染化料,低温、低铬染色,提高颜色鲜艳度以及促进漂白等作用。本文阐述了稀土羊毛漂染的机理,总结了近年来的生产实践经验,以期进一步推动稀土在纺织染整领域中的应用和研究工作。  相似文献   

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