scholarly journals Effects of Steam Heat-Treatment on Properties of Pinus massoniana Wood and Its Bonding Performance

2021 ◽  
Vol 9 (4) ◽  
pp. 789-801
Author(s):  
Meifen Tian ◽  
Bengang Zhang ◽  
Zhigang Wu ◽  
Liping Yu ◽  
Lifen Li ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Pinus Massoniana ◽  
Bonding Performance ◽  
Steam Heat

scholarly journals Effect of Saturated Steam Heat Treatment on Physical and Chemical Properties of Bamboo

Molecules ◽  
2020 ◽  
Vol 25 (8) ◽  
pp. 1999 ◽  
Author(s):  
Qiuyi Wang ◽  
Xinwu Wu ◽  
Chenglong Yuan ◽  
Zhichao Lou ◽  
Yanjun Li
Keyword(s):  
Heat Treatment ◽  
Moisture Content ◽  
Treatment Time ◽  
Flexural Modulus ◽  
Initial Moisture Content ◽  
Chemical Properties ◽  
Saturated Steam ◽  
Xrd Patterns ◽  
Physical And Chemical ◽  
Steam Heat

The aim of this study was to investigate the effects of the heat treatment time and initial moisture content of bamboo on the corresponding chemical composition, crystallinity, and mechanical properties after saturated steam heat treatment at 180 °C. The mechanism of saturated steam heat treatment of bamboo was revealed on the micro-level, providing a theoretical basis for the regulation of bamboo properties and the optimization of heat treatment process parameters. XRD patterns of the treated bamboo slices were basically the same. With the increase in the initial moisture content of bamboo, the crystallinity of bamboo increased first and then decreased after treatment. Due to the saturated steam heat treatment, the content of cellulose and lignin in bamboo slices increased while the content of hemicellulose decreased, but the content of cellulose in bamboo with a 40% initial moisture content increased first and then decreased. The shear strength of treated bamboo changed little within 10 min after saturated steam heat treatment, and then decreased rapidly. During the first 20 min with saturated steam heat treatment, the compressive strength, flexural strength, and flexural modulus of elasticity of the treated bamboo increased, and then decreased.

STEAM HEAT TREATMENT AND FUMIGATION WITH ACETIC ACID TO CONTROL BOTRYTIS CINEREA IN KIWIFRUIT

2007 ◽  
pp. 645-652 ◽  
Author(s):  
K. Cetiz ◽  
A.D. Koukounaras ◽  
A.L. Lagopodi ◽  
E.M. Sfakiotakis
Keyword(s):  
Heat Treatment ◽  
Acetic Acid ◽  
Botrytis Cinerea ◽  
Steam Heat

scholarly journals The Influence of Saturated Steam on Moso Bamboo Quasi-static Micromechanical Properties: Nano-Scale Evaluation

2021 ◽  
Author(s):  
Tiancheng Yuan ◽  
Zhaoshun Wang ◽  
Xin Han ◽  
ZhuRun Yuan ◽  
XinZhou Wang ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Cell Wall ◽  
Crystallinity Index ◽  
Thermal Modification ◽  
Moso Bamboo ◽  
Saturated Steam ◽  
Static Properties ◽  
Tan Δ ◽  
Increasing Temperature ◽  
Steam Heat

Abstract In this paper, in order to analyze the quasi-static properties of Moso bamboo, a new, environmentally friendly and eco-friendly method was used for bamboo thermal modification under the effect of saturated steam. Under saturated steam heat treatment, the chemical composition in bamboo decreased, and the bamboo cell wall shrunk slightly. The increased crystallinity index of cellulose and decreased intensity of peaks belong to hemicellulose were confirmed by XRD and Fourier transform infrared (FTIR) spectroscopy. In addition, the highest modulus of elastic and hardness of treated bamboo were 22.5GPa and 1.1GPa at 180℃/10 min. These conclusions confirmed the micro-mechanical properties of the bamboo cell wall were enhanced by saturated steam heat treatment. The E'r of differently treated bamboo increased with increasing temperature and time, while the E''r and tan δ negatively as a function of increasing frequency. Furthermore, this thermal modification can be regarded as a useful, environmental-friendly and eco-friendly treatment to outdoor use of bamboo-based materials.

scholarly journals Pine wood modification by heat treatment in air

BioResources ◽  
2008 ◽  
Vol 3 (1) ◽  
pp. 142-154
Author(s):  
Bruno M. Esteves ◽  
Idalina J. Domingos ◽  
Helena M. Pereira
Keyword(s):  
Heat Treatment ◽  
Moisture Content ◽  
Equilibrium Moisture Content ◽  
Dimensional Stability ◽  
Bending Strength ◽  
Hot Air ◽  
Low Dimensional ◽  
Tangential Directions ◽  
Steam Heat ◽  
Made In

Maritime pine (Pinus pinaster) wood has low dimensional stability and durability. Heat treatment was made in an oven using hot air during 2 to 24 h and at 170-200 ºC. A comparison was made against steam heat treatment. The equilibrium moisture content and the dimensional stability (ASE) in radial and tangential directions were evaluated at 35%, 65%, and 85% relative humidity. MOE, bending strength and wettability were also determined. At the same mass loss, improvements of equilibrium moisture content and dimensional stability were higher for oven heat treatment, but the same was true for mechanical strength degradation. A 50% decrease in hemicellulose content led to a similar decrease in bending strength.

Influence of the Structure of Heavy Oil Disperse System on its Rheological Properties Under Steam-Heat Treatment Conditions

2017 ◽  
Vol 53 (4) ◽  
pp. 470-479 ◽  
Author(s):  
I. M. Zaidullin ◽  
G. R. Valieva ◽  
A. Kh. Aliev ◽  
A. I. Lakhova ◽  
A. V. Vakhin ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Rheological Properties ◽  
Disperse System ◽  
Heavy Oil ◽  
Treatment Conditions ◽  
Oil Disperse System ◽  
Steam Heat
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