scholarly journals Evaluation of physical and mechanical properties of particleboard made from Petung bamboo using sucrose-based adhesive

BioResources ◽  
2020 ◽  
Vol 15 (3) ◽  
pp. 5072-5086
Author(s):  
Ragil Widyorini
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Dihydrogen Phosphate ◽  
Lignocellulosic Material ◽  
Ammonium Dihydrogen Phosphate ◽  
Pressing Temperature ◽  
Composition Ratio ◽  
Composition Ratios

Bamboo is a potential non-wood lignocellulosic material from which to make particleboard. Sucrose-based adhesive is another potential ingredient, but its use in particleboard has been limited. Addition of ammonium dihydrogen phosphate (ADP) can be used to increase the bonding ability of sucrose-based adhesive and to reduce the required pressing temperature. Therefore, this research used different pressing temperatures and sucrose/ammonium dihydrogen phosphate (ADP) composition ratios to optimize the properties of particleboards. The physical and mechanical properties of the boards were analyzed and compared with the JIS A 5908 (2003) standard for particleboard. The results showed that the interaction of the sucrose-ADP composition ratio and the pressing temperature significantly affected the physical and mechanical properties of the particleboards. The particleboard using only sucrose as adhesive had optimum properties at 200 °C; however, after addition of ADP, the intended properties could be achieved at a 160 °C pressing temperature.

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.

scholarly journals The Effects of Adding Elements of Zinc and Magnesium on Ag-Cu Eutectic Alloy for Warming Acupuncture

2013 ◽  
Vol 2013 ◽  
pp. 1-10
Author(s):  
Yu Kyoung Kim ◽  
Il Song Park ◽  
Keun Sik Kim ◽  
Min Ho Lee
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Physical And Mechanical Properties ◽  
Ternary Alloys ◽  
Suitable Material ◽  
Cu Alloys ◽  
Hyperthermia Therapy ◽  
Mg Addition ◽  
Composition Ratios ◽  
Potential Use

The warming acupuncture for hyperthermia therapy is made of STS304. However, its needle point cannot be reached to a desirable temperature due to heat loss caused by low thermal conductivity, and the quantification of stimulation condition and the effective standard establishment of warming acupuncture are required as a heat source. Accordingly, in this study, after Ag-Cu alloys with different composition ratios were casted and then mixed with additives to improve their physical and mechanical properties, the thermal conductivity and biocompatibility of the alloy specimens were evaluated for selecting suitable material. Ag-Cu binary alloys and ternary alloys added 5 wt% Zn or 2 wt% Mg were casted and then cold drawn to manufacture needles for acupuncture, and their physical properties, thermal conductivity, and biocompatibility were evaluated for their potential use in warming acupuncture. The results of this study showed that the physical and mechanical properties of the Ag-Cu alloys were improved by additives and that the thermal conductivity, machinability, and biocompatibility of the Ag-Cu alloys were improved by Mg addition.

Binderless Particleboard from Castor Seed Cake: Effect of Pressing Temperature on Physical and Mechanical Properties

2015 ◽  
Vol 9 (4) ◽  
pp. 180-188 ◽  
Author(s):  
Mersi Kurniati ◽  
Farah Fahma ◽  
I. Amalia Kartika ◽  
Titi Candra Sunarti ◽  
Khaswar Syamsu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Castor Seed ◽  
Pressing Temperature ◽  
Seed Cake

scholarly journals SIFAT FISIK DAN MEKANIK PAPAN PARTIKEL BERDASARKAN KOMPOSISI LIMBAH KULIT BUAH PINANG DAN LIMBAH KAYU GERGAJIAN DENGAN VARIASI KADAR PEREKAT

2021 ◽  
Vol 9 (2) ◽  
pp. 207
Author(s):  
Asmawati Wurya Sari ◽  
M Dirhamsyah ◽  
Yuliati Indrayani
Keyword(s):  
Mechanical Properties ◽  
Moisture Content ◽  
Water Absorption ◽  
Raw Materials ◽  
Urea Formaldehyde ◽  
Physical And Mechanical Properties ◽  
Betel Nut ◽  
Particle Board ◽  
Composition Ratio

This research aimed to analyze the physical and mechanical properties of particleboard based on the composition of raw materials and adhesive content as well as their interaction with the optimum quality of particle boards that meet JIS A 5908-2003 standards. The particleboard was made with a size of 30 cm x 30 cm x 1 cm with a target density of 0.7 g/cm³.  The pressing was done at a temperature of 140°C for 8 minutes with a pressure of 25 kg/cm². The composition ratio of betel nut peel waste and sawdust varied, namely 60% betel nut peel waste: 40% sawdust, 50% betel nut peel waste: 50% sawdust, and 40% betel nut peel waste: sawdust 60%. The adhesive used was Urea Formaldehyde with a concentration of 12%, 14%, and 16%. The results showed that all test values met the JIS A 5908: 2003 standard except the MOE test. The optimum value of particle board of betel nut peel and sawdust was with a composition ratio of 50% betel nut peel waste: 50% sawdust, 16% adhesive content, with a density value of 0.6876 g/cm³, a moisture content of 9,4530%, water absorption 34,5306%, thickness expansion 8,2508%, MOE 12432,6243 kg/cm², MOR 205,8462 kg/cm², adhesive firmness 2,2530 kg/cm², screw holding strength 81,6861 kg/cm².Keywords: adhesive content, betel nut peel waste, material composition, mechanical properties, particleboard, physical.Abstrak Penelitian ini bertujuan untuk menganalisis sifat fisik dan mekanik papan partikel berdasarkan komposisi bahan baku dan kadar perekat serta interaksi keduanya terhadap kualitas papan partikel yang optimum serta memenuhi standar JIS A 5908-2003. Papan partikel dibuat dengan ukuran 30 cm x 30 cm x 1 cm dengan target kerapatan 0,7 g/cm³. Pengepresan  pada suhu 140°C selama 8 menit dengan tekanan 25 kg/cm². Perbandingan komposisi kulit buah pinang dan serbuk kayu gergaji bervariasi yaitu kulit buah pinang 60% : serbuk kayu gergaji 40%, kulit buah pinang 50% : serbuk kayu gergaji 50% dan kulit buah pinang 40% : serbuk kayu gergaji 60%. Perekat yang digunakan adalah Urea Formaldehida dengan konsentrasi 12%, 14% dan 16%. Hasil penelitian menunjukkan semua nilai uji memenuhi standar JIS A 5908 : 2003 kecuali uji MOE. Nilai papan partikel kulit buah pinang dan serbuk kayu gergaji optimum dengan perbandingan komposisi kulit buah pinang 50% : serbuk kayu gergaji 50%, kadar perekat 16%, dengan nilai densitas 0,6876 g/cm³, kadar air 9,4530%, daya serap air 34,5306%, pengembangan tebal 8,2508%, MOE 12432,6243 kg/cm², MOR 205,8462 kg/cm², Keteguhan rekat 2,2530 kg/cm², kekuatan menahan sekrup 81,6861 kg/cm².Kata kunci : papan partikel, kadar perekat, kulit buah pinang, komposisi bahan, sifat fisik dan mekanik.

Hybrid electrospun nanofibrous membranes: Influence of layer arrangement and composition ratio on tensile and transport properties

2020 ◽  
pp. 152808372091794
Author(s):  
Meisam S Sangtabi ◽  
Mehdi K Dolatabadi ◽  
Mohsen Gorji ◽  
Ali A Gharehaghaji ◽  
Abosaid Rashidi
Keyword(s):  
Mechanical Properties ◽  
Transport Properties ◽  
Volume Fraction ◽  
Great Influence ◽  
Geometrical Properties ◽  
Composition Ratio ◽  
Layer Arrangement ◽  
Functional Membrane ◽  
Nanofibrous Membranes ◽  
Composition Ratios

The present research aimed to investigate the influence of layer arrangement and composition ratio on tensile and transport properties in bi-constituent electrospun nanofibrous membranes composed of polyurethane nanofibers with a hydrophobic nature and poly(2-acrylamido-2-methylpropanesulfonic acid) with a hydrophilic nature. Different hybrid electrospun nanofibrous membranes were produced based on different layer arrangement and composition ratios. To evaluate the membrane performance, their tensile strength, wind, and waterproof performance were measured. By adding 50% poly(2-acrylamido-2-methylpropanesulfonic acid) to polyurethane, the pore size of the hybrid electrospun nanofibrous membranes decreased by 47.64%. As a result, compared with pristine polyurethane membranes, hybrid electrospun nanofibrous membranes showed a good (9.6 mm s−1) windproof performance. Adding poly(2-acrylamido-2-methylpropanesulfonic acid) nanofibers to the polyurethane resulted in a decrease in mechanical properties and waterproof performance. The results show that the volume fraction of the poly(2-acrylamido-2-methylpropanesulfonic acid) and the electrospinning scenarios have a great influence on the mechanical properties of the samples. The results also show that the mechanical properties of hybrid electrospun nanofibrous membranes can be predicted based on the geometrical properties of each component. Computational fluid dynamics were used to simulate air flow through a virtual medium and the results of simulation were compared with the experimental measurement and predicted permeability; then, the best models for predicting air permeability were determined. In addition, based on different types of use, duration of use, and relative humidity level, a bi-functional membrane can be obtained by regulating layer arrangement and composition ratios to suit various applications, for example, in medical disposable clothing, wound dressing, filtering industries, and protective clothing.

scholarly journals A Novel Eco-Friendly Wood Adhesive Composed by Sucrose and Ammonium Dihydrogen Phosphate

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1251 ◽  
Author(s):  
Zhongyuan Zhao ◽  
Shin Hayashi ◽  
Wei Xu ◽  
Zhihui Wu ◽  
Soichi Tanaka ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Water Resistance ◽  
Reaction Pathway ◽  
Wood Adhesive ◽  
Actual State ◽  
Dihydrogen Phosphate ◽  
Ammonium Dihydrogen Phosphate ◽  
Thermal Thresholds ◽  
Bonding Properties ◽  
Ft Ir

Development of a bio-based wood adhesive is a significant goal for several wood-based material industries. In this study, a novel adhesive based upon sucrose and ammonium dihydrogen phosphate (ADP) was formulated in hopes of furthering this industrial goal through realization of a sustainable adhesive with mechanical properties and water resistance comparable to the synthetic resins used today. Finished particleboards exhibited excellent mechanical properties and water resistance at the revealed optimal adhesive conditions. In fact, the board properties fulfilled in principle the requirements of JIS A 5908 18 type standard, however this occured at production conditions for the actual state of development as reported here, which are still different to usual industrial conditions. Thermal analysis revealed addition of ADP resulted in decreases to the thermal thresholds associated with degradation and curing of sucrose. Spectral results of FT-IR elucidated that furanic ring chemistry was involved during adhesive curing. A possible polycondensation reaction pathway was proposed from this data in an attempt to explain why the adhesive exhibited such favorable bonding properties.

Influence of Resin Content on Composite Materials Railway Sleepers for Physical and Mechanical Properties

2011 ◽  
Vol 217-218 ◽  
pp. 495-499
Author(s):  
Yue Sun ◽  
Sheng Ling Xiao
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Bending Strength ◽  
Processing System ◽  
Physical And Mechanical Properties ◽  
Resin Content ◽  
Thickness Swelling ◽  
Pressing Temperature ◽  
Pressing Time ◽  
Resol Resin

It studies the influence of resin content on composite materials railway sleepers for physical and mechanical properties,which is for the preparation of composite materials railway sleepers.It used resol resin setting hot pressure at 2.5Mpa, hot pressing temperature at 170°C, pressing time at 5-6min. The results showed that as the resin content increases, the static bending strength (MOR) first increased and then decreased, the internal bond strength (IB) rised, 2h thickness swelling (2h TS) decreased. Through the analysis of experimental data by using DPS data processing system, resin content had a significant impact on 2h TS.It also affected MOR, IB.But it had little effect on measured density (D), water content (W) and impact strength (IL).

scholarly journals Effects of different pressing conditions on properties of spruce plywoods

2012 ◽  
Vol 52 (No. 6) ◽  
pp. 285-292 ◽  
Author(s):  
P. Král ◽  
J. Hrázský
Keyword(s):  
Mechanical Properties ◽  
Bond Strength ◽  
Shear Test ◽  
Bending Strength ◽  
Phenol Formaldehyde ◽  
Physical And Mechanical Properties ◽  
Institutional Research ◽  
Specific Pressure ◽  
Pressing Temperature ◽  
Nominal Thickness

The paper presents results of an institutional research aimed at assessing the effect of different technological conditions in pressing on physical and mechanical properties of plywood sheets. Spruce plywood sheets of the veneer nominal thickness of 3.0 and 3.5 mm were analyzed. The plywood sheets were produced as five-ply and BAKELITE PF B118 phenol-formaldehyde adhesives were used for there manufacture. In relation to a different pressing temperature 115, 120 and 125°C and a different specific pressure, density, bending strength, MOE in bending and glue-bond strength by a shear test were assessed. The determined values of properties were statistically tested.

Anisotropic Analysis on Processed Surface of KDP Single Crystals

2009 ◽  
Vol 76-78 ◽  
pp. 223-228 ◽  
Author(s):  
Chun Peng Lu ◽  
Hang Gao ◽  
Ben Wang ◽  
Qiang Guo Wang ◽  
Xiao Ji Teng ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Slip System ◽  
Surface Quality ◽  
Potassium Dihydrogen Phosphate ◽  
Physical And Mechanical Properties ◽  
Surface Damage ◽  
Dihydrogen Phosphate ◽  
Strong Anisotropy ◽  
Machined Surface ◽  
Kdp Crystals

Strong anisotropy of physical and mechanical properties of Potassium Dihydrogen Phosphate (KDP) crystals significantly affects surface quality during processing the samples. Different processing direction, along [100], [110], and [120] crystallographic orientations, are chosen on (001) crystal plane in order to evaluate the anisotropic characterizations on the processed surface. Scanning electronic microscopy (SEM) is employed to observe the machined surface damage, defects and profiles. At the same time, surface quality is measured by Zygo surface profiler to estimate the processed surface quality. The results show that the machined surfaces along three different orientations under the same processing conditions behave quite differently from each other. Strong anisotropy and complex slip system of KDP crystals lead to several different asymmetric damages on the machined surface. Surface roughness (Ra) values along [100] are the smallest, that along [120] are in average, and that along [110] are largest. Moreover, many illustrations are given to understand the anisotropic nature during processing, including slip system, mechanical properties during processing, and technical parameters, etc.

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