Research of Process on Making Bamboo Particle Board by Laccase-Treated Calcium Lignosulfonate

2011 ◽  
Vol 179-180 ◽  
pp. 1031-1036 ◽  
Author(s):  
Chun De Jin ◽  
Song Li ◽  
Li Liu ◽  
Jie Wang Ye ◽  
Chun Gui Du
Keyword(s):  
Hot Pressing ◽  
Processing Technique ◽  
Modulus Of Rupture ◽  
Pressing Pressure ◽  
Particle Board ◽  
Thickness Swelling ◽  
Pressing Temperature ◽  
Board Density ◽  
Significant Difference ◽  
Different Levels

The processing technique of bamboo particle board using laccase-treated calcium lignosulfonate was investigated and optimized. We studied the influence of enzyme amount, calcium ligosulfonate amount and hot pressing temperature on different particle board properties. All three factors were significant difference at different levels. There has significant differences between enzyme amount and Modulus of Rupture (MOR)，Modulus of Elasticity (MOE), Thickness Swelling (TS) (P<0.01)and Internal Bonding Strength (IB) (P<0.1). There has significant differences between Calcium lignosulfonate amount and MOR，TS(P<0.01), IB(P<0.05) and MOE (P<0.1). There has significant differences between hot pressing temperature and MOE，TS(P<0.01) and IB(P<0.1), but no significant differences on MOR. The optimum condition for board making as follows: enzyme amount 50u•g-1，calcium lignosulfonate amount 10%，hot pressing pressure 3.0MPa， 200°C and 7min while 0.75g•cm-3 board density and 10 mm thickness.

Research on Manufacturing Technics of New Low-Carbon Green Packaging Materials

2014 ◽  
Vol 532 ◽  
pp. 515-518
Author(s):  
De Jun Shen
Keyword(s):  
Hot Pressing ◽  
Raw Material ◽  
Pressing Pressure ◽  
Corn Stalk ◽  
Low Carbon ◽  
Particle Board ◽  
Pressing Temperature ◽  
Orthogonal Experiments ◽  
Manufacturing Performance ◽  
Green Packaging

By analysis of manufacturing performance of corn stalk, and taking practical processing technics of particle board in consideration, this paper set strawboard density, adhesive consumption, hot-pressing temperature and hot-pressing pressure as variable factors, set prepressing pressure, prepressing time, shaving shape and moisture content of raw material as fixed factors, exploring the optimal combination of process parameters through orthogonal experiments.

Manufacturing Composite from Regenerated Wood Fiber and Polyethylene via Platen-Pressing Process

2013 ◽  
Vol 645 ◽  
pp. 39-42 ◽  
Author(s):  
Zhen Tao Zhang ◽  
Zhao Bin Sun ◽  
Xue Hui Yang ◽  
Yan Hua Dong
Keyword(s):  
Coupling Agent ◽  
Hot Pressing ◽  
Wood Fiber ◽  
Pressing Pressure ◽  
Optimal Parameters ◽  
Thickness Swelling ◽  
Board Density ◽  
Plastic Composite ◽  
Pressing Time ◽  
Polyethylene Powder

The technology of manufacturing wood-plastic composite (WPC) using polyethylene powder (LDPE) and regenerated wood fiber was studied. The effects of board density, the amount of coupling agent, hot pressing time and temperature on product properties were determined. The results show that the optimal parameters for making WPC are the ratio of regenerated wood fiber to polyethylene 6:4, the amount of coupling agent 0%, hot pressing time 10min, hot pressing temperature 180°C, hot pressing pressure 3.0 MPa, the mass ratio of alcohol consumption to plastic 3%. The resultant WPC had a modulus of ruputre (MOR) value of 21MPa, modulus of elasticity (MOE) of 1482 MPa, internal bond strength (IB) of 1.20MPa, moisture content of 0.98%, 24h thickness swelling of 5.69% and 24h water absorption rate of 24.8%. The properties of WPC without coupling agent is close to that of products containing coupling agent.

Study on Hot-Pressing Process of Low-Cost Straw Particle Board

2012 ◽  
Vol 204-208 ◽  
pp. 3624-3628
Author(s):  
Qi Fei Ling ◽  
Xin Gong Li ◽  
Yong Lin Yan
Keyword(s):  
Hot Pressing ◽  
Low Cost ◽  
Urea Formaldehyde ◽  
Particle Board ◽  
Pressing Temperature ◽  
Adhesive Resin ◽  
Board Density ◽  
Pressing Time ◽  
Pressing Process ◽  
Physics Performance

The mixture of isocyanate and urea-formaldehyde adhesive resin was used to manufacture low-cost straw particle board by hot-pressing process. Influence of the hot-pressing temperature, hot-pressing time, board density and the amount of isocyanate adhesive on straw particle board mechanical properties were studied. The resulted showed that, within a certain range, the straw particle board physics performance was improved with the increase of hot-pressing temperature, hot-pressing time, board density and the amount of isocyanate adhesive. The proper hot-pressing process of cost-straw particleboard is hot-pressing time for 40s/mm, MDI applied amount of 3%,a density of 0.7 g/cm3, hot-pressing temperature of 180 °C

Study on Hot-Pressing Technology of Cement Bamboo Particleboard

2010 ◽  
Vol 168-170 ◽  
pp. 1233-1237
Author(s):  
Xin Gong Li ◽  
Xia Zheng ◽  
Yi Qiang Wu
Keyword(s):  
Hot Pressing ◽  
Variance Analysis ◽  
Technological Parameters ◽  
Pressing Temperature ◽  
Board Density ◽  
Regressive Analysis ◽  
Pressing Technology

The hot-pressing technology of cement bamboo particleboard was studied by changing hot-pressing temperature, adhesive/bamboo ratio, board density and additives amount of NaHCO3. Then variance analysis and regressive analysis were conducted on technological parameters. The results indicated that the optimizing technology parameters of cement bamboo particleboard are hot-pressing temperature 130 , adhesive/bamboo ratio 2.8, additives amount of NaHCO310%, boardl density 1.2g/cm3.

Preliminary Research on Manufacturing Technology of Thin Bamboo Veneer Consolidated Composite Floor

2012 ◽  
Vol 503-504 ◽  
pp. 74-77
Author(s):  
Nan Hu ◽  
Xian Jun Li ◽  
Yi Qiang Wu ◽  
Xin Gong Li ◽  
Zhi Cheng Xue
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Bond Strength ◽  
Hot Pressing ◽  
Physical And Mechanical Properties ◽  
Pressing Pressure ◽  
Pressing Temperature ◽  
Decorative Material ◽  
Preliminary Research ◽  
Surface Bond

In this paper, the new bamboo-based consolidated composite floors were fabricated with thin bamboo veneers which used as decoration layers, wear resistant layers, high density fiberboards and equilibrium layers through assembling and scuffing. The effect rules of the composite floor on properties were preliminarily studied by three factors: hot-pressing temperature, pressure and time. The results showed that the wear resistance and surface bond strength of the thin bamboo veneer consolidated composite floor significantly increased with the rise of hot-pressing temperature. In the scope of resources, the effect of hot-pressing pressure and time on properties of the floor is not significant. The optimizing technology is hot-pressing temperature 170°C, pressure 3MPa and time 40s/mm in this study. The thin bamboo veneer consolidated composite floor is an excellent floor decorative material, which has good physical and mechanical properties.

Effect of the Properties of Polyimide Fiber Paper-Based Materials by Different Hot Pressing Process

2013 ◽  
Vol 631-632 ◽  
pp. 494-498
Author(s):  
Zhao Qing Lu ◽  
Qiang Xu ◽  
Zhen Wu ◽  
Zhi Jie Wang
Keyword(s):  
Hot Pressing ◽  
Strength Properties ◽  
Experimental Results ◽  
Electrical Performance ◽  
Pressing Pressure ◽  
Pressing Temperature ◽  
Hot Temperature ◽  
Polyimide Fibers ◽  
Pressing Process ◽  
Polyimide Fiber

Polyimide fibers and polyamide acid fibers was used as main materials to make polyimide fiber paper. The effect of the properties of polyimide fiber paper by hot pressing temperature and hot pressing pressure was discussed. The experimental results showed that when the pressure of hot pressing was 12Mpa and the hot temperature of hot pressing was 220°C, the sheet had excellent strength properties and electrical performance.

Study on Structural Plywood Production Technology from Eucalyptus/poplar

2012 ◽  
Vol 476-478 ◽  
pp. 1547-1552 ◽  
Author(s):  
Li Hong Yao ◽  
Xi Ming Wang ◽  
Ben Hua Fei
Keyword(s):  
Bond Strength ◽  
Production Technology ◽  
Hot Pressing ◽  
Rapid Development ◽  
Practical Significance ◽  
Pressing Pressure ◽  
Poplar Plantation ◽  
Pressing Temperature ◽  
Pressing Time ◽  
The Difference

With the rapid development of wooden structure buildings in China, the demand for structural plywood enlarges significantly. Eucalyptus and poplar plantation is a very wide area of growth in china, therefore, there is practical significance to use eucalyptus and poplar plantation to produce wooden structural plywood. This study uses orthogonal test on pressing temperature, pressing time, pressing pressure, veneer glue spread - four factors influence the bond strength of structural plywood from Eucalyptus/poplar, and has obtained the superior technology. The results show that hot pressing temperature, pressing time, pressing pressure, veneer glue spread –four factors affect the bond strength of the structure plywood significantly, but the difference among the three veneer glue spread levels is not significantly. The better production technology is hot pressing temperature 135 °C, pressing time 24 min, pressing pressure 1.2 Mpa, veneer glue spread 320 g/m2.

scholarly journals Binderless bark particleboard made from gelam (Melaleuca viridiflora Sol. ex Gaertn.) bark waste: The effect of the pressing temperature on its mechanical and physical properties

BioResources ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. 4171-4199
Author(s):  
Eva Oktoberyani Christy ◽  
Soemarno ◽  
Sumardi Hadi Sumarlan ◽  
Agoes Soehardjono
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Physical Properties ◽  
Single Layer ◽  
High Water ◽  
Modulus Of Rupture ◽  
Thickness Swelling ◽  
Pressing Temperature ◽  
Mechanical And Physical Properties ◽  
Panel Surface

This study investigated the effects of the pressing temperature on the mechanical and physical properties of binderless bark particleboard made from Gelam bark waste and the improvement of those properties. In addition, the thermal insulation properties of the particleboard were determined. Four different temperatures (140 °C, 160 °C, 180 °C, and 200 °C) were used to make single-layer binderless bark particleboard with a target density of less than or equal to 0.59 g/cm3. Results revealed that the pressing temperature affected the mechanical properties (modulus of rupture, modulus of elasticity, and tensile strength perpendicular to panel surface), which increased as the temperature increased, and the physical properties (thickness swelling and water absorption), which decreased as the temperature increased. Based on the Tukey test, increasing the temperature from 180 to 200 °C did not significantly affect the mechanical or physical properties, except for the tensile strength perpendicular to panel surface. None of the mechanical properties met SNI standard 03-2105-2006 (2006); however, the 12% maximum thickness swelling requirement was met for binderless bark particleboard hot-pressed at 200 °C. Binderless bark particleboard hot-pressed at 200 °C had high water resistance, regardless of its low strength, and a thermal conductivity value of 0.14 W/m∙K.

Effects of Particle Sizes, Wood to Cement Ratio and Chemical Additives on the Properties of Sesendok (Endospermum Diadenum) Cement-bonded Particleboard

2010 ◽  
Vol 7 (2) ◽  
pp. 57
Author(s):  
Jamaludin Kasim ◽  
Shaikh Abdul Karim Yamani ◽  
Ahmad Firdaus Mat Hedzir ◽  
Ahmad Syafiq Badrul Hisham ◽  
Mohd Arif Fikri Mohamad Adnan
Keyword(s):  
Particle Size ◽  
Sodium Silicate ◽  
Modulus Of Rupture ◽  
Particle Sizes ◽  
Thickness Swelling ◽  
Chemical Additives ◽  
Board Density ◽  
Cement Ratio ◽  
Effect Of Particle Size ◽  
Aluminium Silicate

An experimental investigation was performed to evaluate the properties of cement-bonded particleboard made from Sesendok wood. The target board density was set at a standard 1200 kg m·3• The effect of particle size, wood to cement ratio and the addition of sodium silicate and aluminium silicate on the wood cement board properties has been evaluated. A change of particle size from 1.0 mm to 2.0 mm has a significant effect on the mechanical properties, however the physical properties deteriorate. Increasing the wood to cement ratio from 1:2.25 to 1:3 decreases the modulus of rupture (MOR) by 11% and the addition of sodium silicate improves values farther by about 28% compared to the addition of aluminium silicate. The modulus of elasticity (MOE) in general increases with increasing cement content, but is not significantly affected by the addition of sodium silicate or aluminium silicate, although the addition of their mixture (sodium silicate and aluminium silicate) consistently yields greater MOE values. Water absorption and thickness swelling is significantly affected by the inclusion of additives and better values are attained using higher wood to cement ratios.

Production Process and Nondestructive Testing of Soybean Stalks Particleboard

2012 ◽  
Vol 430-432 ◽  
pp. 1339-1342
Author(s):  
Wei Lu ◽  
Jia Yao ◽  
Ping Han ◽  
Wan Jiang Wu ◽  
Chuang Liu
Keyword(s):  
Mechanical Properties ◽  
Hot Pressing ◽  
Time Distribution ◽  
Process Analysis ◽  
Orthogonal Experiment ◽  
Flexural Vibration ◽  
Modulus Of Rupture ◽  
Process Conditions ◽  
Pressing Temperature ◽  
Pressing Time

Orthogonal experiment of four factor and three level has been adopted, through the process analysis of the various factors on mechanical properties, the best process conditions of soybean stalks particleboard are chosen as: density is 0.7g/cm3, glue content is 12%, and hot pressing time distribution is 3+4 minutes, hot pressing temperature is 175°C. The Ef (the dynamic elastic modulus of NDT) of soybean stalks particleboard has been examined by flexural vibration method of FFT(Fast Fourier Transform), the regression between Ef and MOE(modulus of elasticity), MOR(modulus of rupture) is significant and existing high relevance degree, so using FFT method for NDT of composite materials is feasible.

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