Applied Mechanics and Materials Vols. 295-298

Abstract: Sticking pipe has been being a common problem in drilling process. There are several techniques to solve sticking pipe which caused by differential pressure. But all of the techniques are inefficiency and the common oil-based pipe freeing agent is unsafe and pollution. So the water-based pipe freeing agent, SJK-1, has been developed. This kind of pipe freeing agent is cheaper, safer and more effective.

Abstract: Amorphous phase MnOx/TiO2 catalysts were prepared by two different methods, their catalytic activities for low temperature selective catalytic reduction (SCR) of NOx with NH3 in the presence of excess oxygen were investigated. The catalysts were characterized by XRD, XPS and HRTEM. The results showed that the catalyst prepared by soft template method had better catalytic active than those prepared by sol-gel method, its catalytic property could reach 98.2% at 200°C. From the microstructure characterization, it could be known that the catalyst prepared by soft template had the shape of nanorod, this shape was contributed to the dispersion of the manganese oxides and possessed higher surface lattice oxygen concentration. Furthermore, narrow slit-shaped pores associated with rod-like particles could provide efficient transport pathways to reactant molecules and products. Due to these, the catalyst performed catalytic active very well.

Abstract: In this study, Nano-TiO₂ films are incorporated with heavy metal Pt by the Sol-Gel Dip-Coating (SGDC) method to change their photo-catalytic properties. The Pt and Pt/TiO₂ sol is prepared first, then it was used for coating on the ITO by the Dip-Coating method; finally, through calcination under the high temperature, the desired Pt and Pt/TiO₂ film can be obtained. The film structure was tested by the photoelectric test, XRD and AFM. Results showed that the best preparation conditions is identified as 10ml of Tetrabutyltitanate, 20ml of Anhydrous ethanol and 3ml of Tri-ethanolamine, with a 450°C of calcination temperature lasting for 3h; 3 layers of coating is also suggested with the Pt content being 0.30mol %.

Abstract: Six groups of polyacrylate binders are prepared with emulsion polymerization technique. D4 and ethenylsiloxane as modified monomers. Methyl acrylate (MA), butyl acrylate (BA) and styrene (St) are employed as basic polymerizing monomers; acrylic acid (AA) as catalyzer; glycidyl methacrylate (GMA) as reactive monomers; VTMS as coupling agent;sodium dodecylsulfate (SDS), composite fatty alcohol ether polyethylene oxide (composite AEO) as emulsifier and ammonium persulfate (APS) as initiator. The time and dosage of D4/initiator and dosage of coupling agent are changed for their effects on the reaction conversion rate and gel rate. Then, comparison with normal PA and green PA in the adhesivity, staining resistance, yellowing resistance, water tolerance and pliability of binders are carried. The studies show that the green silicone polyacrylate binder have the better comprehensive properties with D4 5% (on mass of monomers ) and ethenylsiloxane 1% (on mass of D4).

Abstract: In this study, the effects of annealing temperature and annealing time on the crystallinity of polylactide foams were investigated. The foam samples were prepared through a tandem extrusion line by using CO₂ as a blow agent. The research results showed that crystallinity of foamed samples could be significantly increased by annealing. The optimum annealing temperature and annealing time to achieve high crystallinity were varied according to the cell morphology of foams.

Abstract: Taiwan is gifted with special geothermal resources, such as hot springs. In recent years, due to rapid development of the hot spring tourism and medical industry, massive constructions at the side slopes in hot spring areas are requiring the large amount of concrete material. Thus, the engineering properties of concrete material in the hot spring environment are an important research subject. Taiwan yields a large output of fly ash, slag and waste LCD glass annually. If these recycled materials can be added into concrete materials as mineral admixture, the construction quality will be improved, while contributing to waste reduction. Therefore, this study used the concrete without and with different recycled materials (e.g., slag, fly ash and glass waste powder) respectively to make specimens in fixed water-binder ratio W/B=0.44, and tested the compressive strength, splitting strength, ultrasonic pulse velocity and rate of volume change in general water curing and hot spring water curing conditions. The results showed that the strength deterioration and volume expansion of the concrete with recycled materials could be postponed in the hot spring water environment, and the glass waste powder had the best effect.

Abstract: With the development of society, the clothing industry has entered the period of material priority. With the increasingly view on health, "Green"and environmentally friendly clothing is about to apply and popularize. Hereby the article focuses on some new environmentally friendly materials, such as Bamboo fiber, Tencel fiber etc. Explanation of the function and specialty has been given separately. It is not only meet the consumers`need of fashion and health, but also very important in environment protection in current greenism.

Abstract: Our purpose aims to introduce a contribution to the water filtration field with a potentially low cost carbon membrane. Porous carbonized material were prepared with predefined porosity of 0.1µm to be used as a support for nanofiltration and microfiltration membranes A composite material has been prepared by incorporation of activated carbon powder in a thermosetting resin, which underwent later a heat treatment under nitrogen atmosphere. The size of pores forming in the solids were controlled by varying different parameters such as pyrolysis temperature , pore forming agent added, carbon particle size and the resin matrix type. The results showed, that the homogenization of the resin/carbon composite pore size after pyrolysis was significantly related to activated carbon grain size. However, Pyrolysis temperature, pore forming agent content , thermosetting resin type were shown also to influence pore size of pyrolyzed material but play no role in pore size homogenization. It is important to mention here that pores size of carbonaceous material synthesized from epoxy resin is smaller than that synthesized from phenolic resin for the same particle size of activated carbon powder. Mechanical tests (3 point bending) and pore size measurements of 0.1 µm support have revealed that the flexural strength and porosity levels of 0.1 um supports based on epoxy resins are higher than their counterparts based on phenolic ones ( flexural strength of 71.62 MPa against 59.12MPa and porosity level of 29% against 21%).

Abstract: Application of hemp fiber to low-carbon design can realize conceptual innovation. This article takes low-carbon clothing as development objective, and excavates and develops its huge competitive advantages on the low-carbon clothing application aspect through studying the practical applicability of hemp fiber. Starting from green regeneration of hemp fiber, the designers would play their design creativity on the basis of visual effect, tactile effect, integral feeling and other aspects, and endow the hemp fabric more design philosophy and flexile technique of expression applying the design skills and the green concept.

Abstract: This study intends to explore the application of treating Methylene Blue dyeing wastewater with an inexpensive adsorbent compounded with . It studied the adsorption kinetics and adsorption thermodynamics of MB-Mold/Bentonite system. And single factor investigation were also conducted, including dosage, initial concentration, pH, stirring time and standing time. The results showed that the Methylene Blue system fitted second-order kinetics with 62.11mg/g saturated adsorption capacity. While the adsorption isotherms fitted Freundlich equation well(monolayer adsorption), with 61.49mg/g adsorption capacity. And the removal was above 99%, when the dosage of composite absorbent was 8g/L, pH was nature (5.6), stirring time was 15min and standing time was 1h .