Zhi Li Zhong

Hemp Powders Used as Sorbents to Remove Zn2+ Ions from Aqueous Solution

Sorption potential of hemp powders as sorbents converted from wasted hemp fibers for Zn2+ ions from diluted aqueous solution was explored. Spectrophotometric method was selected to determine the concentration of Zn2+ ions in the solutions. The influence of different factors on the sorption, such as pH, amount of hemp powder applied as well as initial concentration, were studied, respectively. The obtained results show that the sorption capacity for Zn2+ was the maximum when the pH was 5.85. Increasing the initial concentration of the solutions resulted in increased sorption capacity. Depressed uptake capacity was obtained while amount of hemp powders was increased.

Study on Effect Factors of Filtrating Properties of the Polypropylene and Basalt Filament Woven Filter Cloth

Polypropylene filament was used as the warp yarn, and respectively Basalt filament and Polypropylene filament was applied to the weft yarn, several samples were woven in different organizational structure. Then the effect factors of filtration were tested, and permeability, abrasion resistance and air permeability of these samples were measured, filtration resistance was evaluated indirectly through the Flow Tester. How the influence of the performances of raw material the filtrating properties of the samples were investigated, which based on the above experiment, as well as the other factors. The results show that permeability and air permeability had little change in the same process parameters, however, abrasion resistance of the samples by basalt filament significantly were superior to the performance of polypropylene filament.

Research on Polypropylene Dyeing in Supercritical Carbon Dioxide

Polypropylene fibers were dyed with Disperse dyes Blue 2B in Supercritical Carbon Dioxide at different temperature, pressure and time. The K/S value were determined and the effect of as temperature, pressure and dyeing time on the dyeing behaviours of disperse dyes on Polypropylene fibers were discussed. It was found that with the increase of dyeing temperature and pressure, the K/S value increased gradually, and dyeing effect was best after the fiber was dyed at 120 °C, 28 MPa for 20 min.

The Research and Development of Continuous Basalt Fiber /Polyester Woven Filter Cloth

Filter made by polyester woven fabric may deform in service, which may be improved by interweaving polyester and continuous basalt fiber filaments. The dimensional stabilities of polyester woven filter and continuous basalt fiber/polyester woven filter were observed under the conditions of dry heating at high temperature and hot dilute alkali environment. It was found that the continuous basalt fiber was helpful to improve the dimension stability of the woven filter fabrics in different concentrations of hot dilute alkali.

Research on Fire-Resistant Fabric Properties of Basalt Fiber

Fire retardant performance is an important indicator of fire-resistant fabric, and a major part of fabric protective properties, which has a great relationship with raw materials and weaving processing parameters of weaving. In this paper, basalt fiber were used to make fire-resistant fabric due to the superior properties of heat resistance, anti-oxidation, radiation, insulation of noisy and heat, filtration and high compression strength and shear strength. The fabrics of different weaves were produced on a sample loom. Then the properties, such as abrasion durability, fire resistance, reaction to acid and alkali were measured for evaluation. The results revealed that basalt fiber has great advantages for producing fire-resistant fabric.

Research on Properties of Fabrics Finished by Nano Titanium Dioxide

The article explored the finishing process of cotton fabric with nano titanium dioxide and adopted the dipping-rolling-drying process for the purpose of cotton fabric with good ultraviolet (UV) resistant performance. In this study, the concentration of titanium dioxide acted as variable factor to test and analysis the regular pattern of fabric UV resistant performance, mechanical properties and wearability after being treated with different concentrations of titanium dioxide solution. The results showed that the property of UV resistance improved with the increase of solution concentration. The ultraviolet protection factors (UPF) of fabric was 43.5 at a concentration of 0.5%, which was beyond the UV resistant standard of 40. However, the mechanical properties and wearability decreased in varying degrees with the increase in concentration of titanium dioxide. Thus the overall performance should be considered comprehensively to select the finishing process. All of these conclusions provide basic data for some in-depth research in the future.

Development of Basalt Filament Highway Guardrail

In order to reduce vehicle crash on highway, basalt fiber reinforced guardrail was developed in this study. The wave shaped framework was coated with thermoplastic acrylic resin, using injection molding machine. Tensile strengths of the samples were tested by a 3380Instron and the corresponding property of the composite was calculated on the basis of the composite mechanics. The results indicated that the basalt filament reinforced highway guardrail have the advantages of high strength, excellent corrosion resistance, relative low cost and so on.

The Influence of Coating on the Elastic Modulus of Basalt Filament Diaphragm Fabric

This paper focuses on the influences of the technologies such as curing time, curing temperature and coating on the elastic modulus of basalt filament diaphragm fabric. This paper compares the elastic modulus of basalt filament diaphragm fabric with that of glass fiber diaphragm fabric under the same fabric density, texture and coating thickness, thus discusses the feasibility of using basalt filament as cone material. In the experiment, we use CSW-03 loom to weave basalt filament diaphragm fabric and glass fiber diaphragm fabric, then we use Werner Mathis AG LTF97885 coating machine to coat them and then use 3380Instron advanced testing machine to test the elastic modulus and the breaking strength. Conclusion: The coating curing effect, the elastic modulus and the breaking strength will reach their best when the temperature is 120°C, the time is 30 minutes. When the coating thickness is 0.05mm, the elastic modulus of basalt filament diaphragm fabric will be best. So considering the elastic modulus, basalt filament diaphragm fabric is more suitable than glass fiber diaphragm fabric. The result of this paper can be used as theoretical basis for the development of basalt filament diaphragm fabric. So we can develop more materials related to basalt filament diaphragm fabric to enhance market competitiveness.

The Applications of Basalt Fiber in the Automotive Industry in the Future

This paper describes the characteristics of basalt fiber, lists the excellent performances of basalt fiber, the good sound insulation, high thermal stability, high temperature filtration, described the future of basalt fiber used in the automotive friction materials, filter materials and interior materials.

The Influence of Basalt Fiber Orientation on the Mechanical Property of Composite Board

The composite board was made of chopped basalt and polypropylene fibers. The manufacturing process included blending, carding, web formation, laminating and compression molding. The tension and bending properties were investigated experimentally. The load - displacement curve of the tensile test revealed that the elastic modulus and maximum vertical load in the longitudinal were far greater than these in the transverse direction; and tensile strengths were far apart in the longitudinal and transverse direction as well. In comparison with the tensile tests, the effect of basalt fiber orientation on the bending modulus and strength were relatively insignificant. In addition, from the micro fibril angle, we also verify that the orientation angle of basalt fiber is an important factor of influence to the mechanical property. In the similar study, the influence hadn’t been seen sufficiently, so this paper provides reference to the actual application of the composite board.