Choosing optimum softening process and exploring the factors affecting dimensional stability and their changing laws can be able to provide technological support for development of curving furniture. The total rubber ...Choosing optimum softening process and exploring the factors affecting dimensional stability and their changing laws can be able to provide technological support for development of curving furniture. The total rubber wood samples were 112 [220 mm (longitudinal) × 17 mm (radial) × 8 mm (tangential)], and they were softened by boiling water and bent through using curved molds in the test. The optimum softening process was selected according to MOR value of the samples. Some affecting factors which influenced the dimensional stability of curving samples were investigated in the optimum softening process, including aging time, final moisture content of the samples, treatment time at a temperature of 100 ℃ and soaking time in water. The results indicate that the optimum softening process is as follows: softening temperature 112 ℃, saturation vapor pressure 0.16 MPa and softening time 3 h. All factors would affect the dimensional stability of curving samples, but the influence of soaking time in water was the most remarkable. When the aging time was 2 h and the final moisture content was 9.8%, the dimensional stability of the curving samples was the best. The chord change of the samples was great in the first 2 hours during heat treating process at a temperature of 100 ℃.展开更多
文摘Choosing optimum softening process and exploring the factors affecting dimensional stability and their changing laws can be able to provide technological support for development of curving furniture. The total rubber wood samples were 112 [220 mm (longitudinal) × 17 mm (radial) × 8 mm (tangential)], and they were softened by boiling water and bent through using curved molds in the test. The optimum softening process was selected according to MOR value of the samples. Some affecting factors which influenced the dimensional stability of curving samples were investigated in the optimum softening process, including aging time, final moisture content of the samples, treatment time at a temperature of 100 ℃ and soaking time in water. The results indicate that the optimum softening process is as follows: softening temperature 112 ℃, saturation vapor pressure 0.16 MPa and softening time 3 h. All factors would affect the dimensional stability of curving samples, but the influence of soaking time in water was the most remarkable. When the aging time was 2 h and the final moisture content was 9.8%, the dimensional stability of the curving samples was the best. The chord change of the samples was great in the first 2 hours during heat treating process at a temperature of 100 ℃.
