Furniture Design Ideas

Loads exerting on NASC will be transferred to fibers through matrix, and the mechanism relates to constitutive equations and mechanical behaviors of fibers, matrix and interface phase. According to the thermo-viscoelastic theory and the shear-lag theory of fibrous composites, a micromechanical model of a single fiber cylindrical cell, which includes a fiber, the matrix and […]

Theoretical work on NASC is usually based on the assumption that fibers are stiff and straight in matrix. The real fibers, however, bend and wind together. With the reduce of fiber contents or the increase of fiber lengths, fiber bending and winding are enhanced. Due to the forming process, the bending, winding and uneven distribution […]

Investigating the orientation of fibers in matrix will provide both theoretical explanations for the reinforcing mechanism of short fibers and the basis for prediction and optimization of mechanical properties of NASC. A proprietary technology was developed to obtain the fiber orientation in matrix. Four steps are involved. Firstly, cut a rectangular block of material and […]

1.3 Measurement and characterization of aspect ratio The aspect ratio of short fiber determines the transfer and distribution of stress in material, and its distribution regularity can be obtained by measuring the radius and the length of fibers in the NASC products. Some samples of NASC were prepared. Using organic solvents, such as gasoline or […]

The regression design of carbon/glass hybrid fiber reinforced NASC can be defined as the design problem with three components which include reinforcing hybrid fiber (carbon/ glass hybrid fiber), elastic binding material (NBR) and filling material (compatibilization fiber and other stuffings). In consideration of the attribute for processing of the material, the component contents in NASC […]

The uniform design method can be used to further decrease test number in formulation optimization. The approximate formulation of composites can be obtained by uniform design, but the principal and subordinate factors which affect material performances cannot be analyzed by the design table. Furthermore, the regression design can also be adopted to optimize the formulation […]

1.2 Selection of raw materials for NASC The main constituents of NASC are non-asbestos reinforcing fibers, elastic binding materials, filling materials and chemical additives. There are great differences of the physicochemical properties between non-asbestos fibers and asbestos fibers. Therefore, in the design of NASC, the effects of the properties and the content of the non-asbestos […]

The surface activity of most non-asbestos fibers is very poor, which leads to the lower wettability between fibers and rubbers. Therefore, in order to obtain a good interface bonding strength, the reinforcing fibers must be pretreated by suitable surface treatment methods. The commonly used surface treatment methods include surface activating treatment and dipping treatment. Some […]

A calender process flow diagram is illustrated in Fig. 3. In this process, rubber is dissolved by an organic solvent and then mixed with other constituents. The NASC sheet is molded in a roller-type calender. Preparation of rubber paste is fulfilled in three steps including plasticizing, mixing and dissolving. The mixing and plasticizing steps are […]

1.1 Molding process The molding process of NASC is similar to that of the traditional rubber based composites, as shown in Fig. 1. The plastication should be carried out using a mill mixer or an internal mixer, to improve plasticity of raw rubber. Before this step, raw rubber may be roasted in a hot chamber […]