共查询到18条相似文献，搜索用时 250 毫秒
1.
纳米二氧化钛修饰的内墙涂料的制备和性质研究(英文) 总被引：1，自引：0，他引：1
The modification of the traditional interior wall paint was carried out by means of adding nano-TiO_2 as a functional pigment.By regulating the dosage of dispersant,the nano-particles can be dispersed in paint homogeneously.With two aspects of experiments:dosage of nano-TiO_2 and pigment volume concentration (PVC),the paint formulation can be optimized and its properties,such as hardness,scrub resistance,storage stability,contrast ratio and gloss can be improved.Finally an interior wall paint with high performance and air purification was prepared.Its character of formaldehyde degradation would be discussed in the next article. 相似文献
2.
A novel nano-TiO2-xNx composite was used as photocatalyst and added to the interior wall paint. The average diameter of nano-TiO2-xNx was about 20 nm. The majority crystal component of the sample was anatase and its optical absorption edge was shifted from 387 nm to 520 nm significantly. Nano-composite paint containing different dosage of nano- TiO2-xNx was investigated to study the properties of formaldehyde decomposition in the air. Testing results show that the formaldehyde decomposition ratio of that nano-paint can almost reach above 80%, especially for that of the paint containing 3% （w/w） nano-TiO2-xNx which exceeded 90%. The primary investigation on the reaction kinetics of photocatalytic formaldehyde decomposition indicated that the experiment data well fit the model of first-order reaction kinetics. 相似文献
3.
Nano-TiO2 powders with pure anatase sturcture were prepared by the method of precipitation-solution-gelation,using H2TiO3,hydrogen peroxide and ammonia as reactants.Active red X-3B dye solution was selected as a model pollutant for the photocatalysis degradation experiments,The effects of grain sizes,dosage and microostructure of nano-TiO2 on itsphotocatalysis properties were studied.The results show that photo-activity of the nano-TiO2 is enhanced with the grain sizes reducing or dosages increasing of nano-TiO2,Howerver,excess increase in nano-TiO2 concentration is not advantageous to the enhancement of the photo-activity.Anatase TiO2 demonstrated a higher photo-activity than rutile TiO2,The dye solution hardly degraded without nano-TiO2 powders being added into it or under sunlight irradiation. 相似文献
4.
In order to quickly explore the quality of cut-off wall in dams, a new method of high-density seismic image was adopted and estimated by model and in-situ wall tests. The vibration exciter was employed and several parameters such as hypocentral distance, length of signal record and sampiing space in signal collection were determined, which are 8 m, 0.25 ms and 128 ms respectively. Through time and frequency field signal analyses, it is concluded that, the smaller arrival times of reflected longitudinal and surface waves, and the higher their main frequencies, the higher the strength of the wall, vice versa. Accordingly the construction quality of the wall can be evaluated quickly by high-density seismic image. 相似文献
5.
The loads of shock wave effect on fabricated anti-blast wall and distribution law around the wall were investigated by using near surface explosion test method and FEM. The pressure-time histories and variety law on the foreside and backside of the anti-blast wall were adopted in the tests of variety of different explosion distances and dynamites, as well as in the comparison between the test and numeri-cal calculation. The test results show that the loads of shock wave effect on the anti-blast wall were es-sen-tially consistent with calculation results using criterion under surface explosion when explosion dis-tances exceed 2 m, the distribution of overpressure behind wall was gained according to variety law based on small-large-small. It is also demonstrated that the peak overpressure behind wall had com-monly appeared in wall height by 1.5—2.5 multiples, and the peak overpressures of protective building behind wall could be reduced effectively by using the fabricated anti-blast wall. 相似文献
6.
This paper presents a case study on an ultra-deep diaphragm wall with a depth of 110 m constructed in Ningbo City. The in-situ application shows that using Bauer BC40 cutter machine in conjunction with cutter wheels specified for different strata would be qualified for constructing the 110 m diaphragm wall with high efficiency and precision given that the quality of slurry and poured concrete can be guaranteed. The ground settlement can be effectively controlled by using the overlapping construction method. Sliding failure as a whole characterized by pronounced lateral deformation is likely to occur in the upper muddy clay layer due to its high compressibility and sensitivity. In contrast, local collapse of trench walls tends to happen in the sandy silt strata. Furthermore, careful attention should be paid to sandy silt during the entire construction period as the vertical displacement of the sandy silt continues to develop even after concrete pouring 相似文献
7.
It is inevitable that as a result of progress in technology and the changes in the ways with which design is conceived, interior architecture schools should be updated according to these requirements and that new educational processes should be tried out. It is for this reason that the scope and aim of this study have been determined as being the formulation of a hybrid educational model for the integration of digital approaches to design within the interior architecture education system. Within the chosen scope and aim of this study, and as a methodology, various algorithmic and parametric approaches have been applied in various practical applications as digital design instruments, and conclusions have been reached concerning the advantages they offer within the design process. The advantages and disadvantages, concerning interior architecture education, of digital approaches to design over the traditional design method, have been presented on the basis of results found during practical applications of digital design, the information found in publications about this subject. A hybrid educational model for the restructuring with digital design instruments of interior architecture education and design studios as experimental areas has been presented. Thanks to this proposed model, the establishment of a computer formatted analytic design system in the guise of dynamic systems will get easier and, the opportunity of restructuring the process and conception of design will also present itself. As the effects of this method are reflected on the products, new geometric approaches and typologies will appear, with the result that designs and digital instruments will constantly be developed and will evolve. In conclusion, educating the designers of the future according to the essence of these approaches will make it possible to train professionals who correctly use and understand the technologies being developed, who have a critical stance, and who can produce renewable designs. 相似文献
8.
ABBAS T.A. OMAR M.S. 《浙江大学学报(A卷英文版)》2007,8(5):793-796
A suitable simple optical cryostat for optical, magneto-optical, electrical and thermo-electrical measurements was designed. It is suitable for use in a magnetic pool gap as narrow as less than 1 cm. Throughout a long period of time, the heat diffusion process of the cryostat can be easily operated at slow increase in sample temperature in a range 1.25 K/min at 200 K that will be reduced gradually to 0.66 K at room temperature. Liquid nitrogen was used to cool down the temperature. During the operation, the change in the measured energy gap of a semiconductor sample and other physical parameters resulting from the change of temperature can be corrected through the temperature coefficient of that parameter at the corresponding temperature. The cryostat was successfully used for all experiments mentioned above to measure the properties of a single crystal of GaP (Gallium Phosphate) semiconductor. 相似文献
9.
Influences of Randomly Distributed Wall THickness of Beverage Can on Its Strength and Stiffness 总被引：1，自引：0，他引：1
This paper describes the research undertaken on the strength and stiffness of fluctuation on the wall thickness of steel beverage cans using the Monte-Carlo stochastic finite element method.Sample distributions were firestly assumed and then proven using the data observations of the wall thickness.the APDL language was then applied,and the stresses and displacements of the can were calculated by using the ANSYS software.It is concluded that the structureal reliability of a steel-making beverage can be estimated accurately. 相似文献
10.
Humor can be interpreted in many forms,and verbal humor is the most popular one.Grice’s cooperative principle was proposed in 1967 and the violation of cooperative principles as well as its sub-maxims will cause humor.This paper will put the emphasis on CP’s effects on humor and will give some analysis in detail. 相似文献
11.
孙光意 《佳木斯教育学院学报》2012,(5):102+107
就墙绘而言,简单的讲,就是在墙上作画。因此,又被称之为墙画、墙体壁画。本文则就墙绘艺术在室内设计中所体现出的艺术性及其文化内涵进行论述,旨在加深我们对墙绘艺术的认识和了解。 相似文献
12.
建筑用粉刷石膏的性能分析 总被引：10，自引：0，他引：10
粉刷石膏是一种新型内墙抹灰材料，从技术经济分析，粉刷石膏克服了常见的墙体抹灰工程中的通病．且环保性能优越，是一种良好的内墙粉刷材料。 相似文献
13.
介绍了用有机硅改性丙烯酸酯乳液的物理和化学方法，对化学方法中的接枝共聚和嵌段或交替共聚的原理和工艺做了分析，对以硅丙乳液为主要成膜物质的外墙涂料的配制过程及所用的设备、涂装施工工艺也做了概括性的说明．有机硅改性丙烯酸乳液过程中存在的问题是：物理共混法的改性效果差，化学共聚法的反应不容易控制．从发展趋势看，若能解决化学共聚法的问题，硅丙乳液因其高耐候性、耐污染性和长的使用寿命而将成为外墙乃至整个建筑用乳胶漆行业的主导产品． 相似文献
14.
15.
何锦强 《广东轻工职业技术学院学报》2009,8(3):17-20
采用三维电极/Fenton试剂/中和法对广东某包装厂高浓度油漆废水进行处理,实验结果表明：油漆废水通过铁板三维电极在电压18V、极板间距4cm、pH自然和电解3h条件下,COD去除率达67.1%;电解水在H2O2投加量为13mL/L（30%）、Fe^2＋投加量为40mL/L（10%）、反应时间为3h时,COD为109mg/L;将处理水pH调至6-9,出水COD可降至100mg/L以下,达到国家《污水综合排放标准》（GB8978-1996）二级排放标准。 相似文献
16.
以环保型水性聚氨酯(WPU)作成膜物,把环保、高附加值及功能化作为涂膜设计理念,以低成本竹炭(BC)作功能助剂,旨在合成宜居多功能涂膜,通过BC改性及优化配方制备了BC/WPU功能涂膜。研究了BC改性剂种类、用量和添加量、粒度及分散时间等因素对功能涂膜性能的影响。结果表明:γ-胺丙基三乙氧基硅烷(γ-APTES)改性BC/WPU功能涂膜具有优异的导电、力学性能;在γ-APTES为BC质量的2%、BC用量为20%、BC粒度为500目、分散40 min条件下,制备的涂膜体积电阻率为1.7×104Ω.cm,铅笔硬度为4H,冲击强度≥70kg.cm,耐洗刷性能≥11350次。 相似文献
17.
王庆雨 《韩山师范学院学报》2010,31(3):79-82,86
室内装修污染问题在教师公寓内普遍存在,其存在具有独特的表征,污染来源广泛,尤其是石材、陶瓷、板材、油漆和涂料、家具和地板亮光剂的污染危害性大.装修中要选用优质的石材和板材等装修材料,装修后要进行安全检测等技术和管理手段,有效地对室内装修污染进行防治. 相似文献
18.
辐射型隔热涂料的研究 总被引：2，自引：0，他引：2
以过渡金属氧化物Fe2O3、MnO2为主要组分,掺入NiO、Co2O3、CuO,通过固相烧结制备红外辐射材料;优选发射率较高的A、B试样与堇青石复合制备堇青石-过渡金属氧化物红外辐射材料,并将制得的红外辐射材料作为功能填料制备辐射型隔热涂料,并对其隔热机理进行了探讨。研究表明:添加40wt%试样B制备的堇青石-过渡金属氧化物复合红外辐射材料8~14um的红外发射率达95.4%;以TBH为成膜基料,添加2.0g堇青石-过渡金属氧化物红外辐射材料为填料制备隔热涂料的热反射率达73.2%。 相似文献