scholarly journals Environment-friendly wood fibre composite with high bonding strength and water resistance

2018 ◽  
Vol 5 (4) ◽  
pp. 172002 ◽  
Author(s):  
Xiaodi Ji ◽  
Yue Dong ◽  
Tat Thang Nguyen ◽  
Xueqi Chen ◽  
Minghui Guo
Keyword(s):  
Bonding Strength ◽  
Water Resistance ◽  
Fibre Composite ◽  
Wood Fibre ◽  
National Standard ◽  
Environment Friendly ◽  
X Ray ◽  
High Bonding Strength ◽  
Fibre Composites ◽  
Wood Fibres

With the growing depletion of wood-based materials and concerns over emissions of formaldehyde from traditional wood fibre composites, there is a desire for environment-friendly binders. Herein, we report a green wood fibre composite with specific bonding strength and water resistance that is superior to a commercial system by using wood fibres and chitosan-based adhesives. When the mass ratio of solid content in the adhesive and absolute dry wood fibres was 3%, the bonding strength and water resistance of the wood fibre composite reached the optimal level, which was significantly improved over that of wood fibre composites without adhesive and completely met the requirements of the Chinese national standard GB/T 11718-2009. Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) characterizations revealed that the excellent performance of the binder might partly be due to the amide linkages and hydrogen bonding between wood fibres and the chitosan-based adhesive. We believe that this strategy could open new insights into the design of environment-friendly wood fibre composites with high bonding strength and water resistance for multifunctional applications.

Eco-Friendly Wood Fibre Composites with High Bonding Strength and Water Resistance

2021 ◽  
pp. 105-122
Author(s):  
G. Rajeshkumar ◽  
S. Arvindh Seshadri ◽  
M. Bilal Mohammed ◽  
K. Srijith ◽  
B. Brahatheesh Vikram ◽  
...  
Keyword(s):  
Bonding Strength ◽  
Water Resistance ◽  
Wood Fibre ◽  
High Bonding Strength ◽  
Fibre Composites

Characterization of interfacial stress transfer ability in acetylation-treated wood fibre composites using X-ray microtomography

2017 ◽  
Vol 95 ◽  
pp. 43-49 ◽  
Author(s):  
Thomas Joffre ◽  
Kristoffer Segerholm ◽  
Cecilia Persson ◽  
Stig L. Bardage ◽  
Cris L. Luengo Hendriks ◽  
...  
Keyword(s):  
Treated Wood ◽  
Stress Transfer ◽  
Wood Fibre ◽  
Interfacial Stress ◽  
X Ray ◽  
Fibre Composites

Preparation and Characterization of Silicate Wood Adhesive Modified with Ammonium Stearate

2014 ◽  
Vol 1033-1034 ◽  
pp. 1048-1053 ◽  
Author(s):  
Xin Li Zhang ◽  
Hong Hui Zhang ◽  
Yi Qiang Wu ◽  
Yun Chu Hu
Keyword(s):  
Bonding Strength ◽  
Water Resistance ◽  
Wood Adhesive ◽  
National Standard ◽  
Adhesion Properties ◽  
Good Thermal Stability ◽  
Thermo Gravimetric Analyzer ◽  
Infrared Spectrometer ◽  
Grade Ii

In order to improve the water resistance of silicate wood adhesive, a kind of silicate adhesive was prepared from water glass with silica as curing agent, and ammonium stearate as modifier. The chemical structure, surface morphology and thermal properties of the silicate adhesive were characterized by Fourier transform infrared spectrometer, scanning electron microscope, and thermo-gravimetric analyzer. As the two main measures of adhesion properties, the bonding strength and water resistance were also determined. The results showed that ammonium stearate was successfully introduced into the molecule structure of silicate, the silicate adhesive have good thermal stability in the range of 30~800 °C and the modified silicate adhesive had more smooth cured morphology. The bonding strength and 24h water absorption rate of poplar plywood glued by the silicate adhesive was 0.71 MPa and 22.81%, respectively, reaching the grade II of plywood performance's national standard.

Plywood with Soy Protein - Acrylate Hybrid Adhesive

2014 ◽  
Vol 884-885 ◽  
pp. 108-111 ◽  
Author(s):  
Chun Nan Jin ◽  
Shi Cheng Zhang ◽  
Jiu Yin Pang ◽  
Zhen Guo Gao
Keyword(s):  
Soy Protein ◽  
Bonding Strength ◽  
Adhesive Bonding ◽  
Water Resistance ◽  
Soybean Protein ◽  
Solid Content ◽  
National Standard ◽  
Soy Protein Adhesive ◽  
Protein Adhesives ◽  
Composite Study

This paper is mainly aimed at the problem of low bonding strength of soy bean protein adhesive,poor water resistance,with methyl methacrylate and vinyl acetate composite study made with rubber manufacturing class II plywood,meet the national standard,so as to solve the water resistance of soy protein adhesives and bonding strength of.Experiments that 3.5g soy protein, 5g PVA, 30g MMA, 0.3g APS and 100g water, modified soy protein adhesive bonding strength obtained is excellent, and cost reduction.Preparation of soybean protein-acrylate adhesive solid content,viscosity and strength of plywood detection.

Preparation and properties of a starch-based wood adhesive with high bonding strength and water resistance

2015 ◽  
Vol 115 ◽  
pp. 32-37 ◽  
Author(s):  
Yanhua Zhang ◽  
Longlong Ding ◽  
Jiyou Gu ◽  
Haiyan Tan ◽  
Libin Zhu
Keyword(s):  
Bonding Strength ◽  
Water Resistance ◽  
Wood Adhesive ◽  
High Bonding Strength

Preparation of Plywood Using Starch Adhesives Modified with Isocyanate

2010 ◽  
Vol 26-28 ◽  
pp. 1065-1068 ◽  
Author(s):  
Ji You Gu ◽  
Ying Feng Zuo ◽  
Yan Hua Zhang ◽  
Hai Yan Tan ◽  
Li Bin Zhu ◽  
...  
Keyword(s):  
Chemical Bonding ◽  
Photoelectron Spectroscopy ◽  
Bonding Strength ◽  
Chemical Structure ◽  
Water Resistance ◽  
Influence Factors ◽  
Solid Content ◽  
Xps Analysis ◽  
X Ray ◽  
Key Factor

The purpose of the study was to manufacture plywood using starch adhesives modified by isocyanate, the influence factors on the bonding strength and water resistance of starch adhesive were studied by different solid content, adding additives and adding isocyanate. X-ray photoelectron spectroscopy (XPS) analysis was used to characterize the chemical structure of bonding interface. The results show that the bonding strength of starch adhesive was increased significantly when solid content increased to 50%. Bonding strength and water resistance were improved significantly by adding additives and isocyanates to starch adhesive. The analysis of XPS indicated that the chemical bonding derived from the reactions of isocyanate was the key factor to increase bonding strength and water resistance.

scholarly journals Soft x-ray spectromicroscopy of wood fibre composites

2009 ◽  
Vol 186 ◽  
pp. 012091 ◽  
Author(s):  
A G Michette ◽  
C Phanopoulos ◽  
R J Newell ◽  
C McFaul ◽  
S J Pfauntsch ◽  
...  
Keyword(s):  
Wood Fibre ◽  
X Ray ◽  
Fibre Composites

scholarly journals Impact Evaluation of High Energy Ball Milling Homogenization Process in the Phase Distribution of Hydroxyapatite-Barium Titanate Plasma Spray Biocoating

Coatings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 728
Author(s):  
Roberto Gómez Batres ◽  
Zelma S. Guzmán Escobedo ◽  
Karime Carrera Gutiérrez ◽  
Irene Leal Berumen ◽  
Abel Hurtado Macias ◽  
...  
Keyword(s):  
Barium Titanate ◽  
Ball Milling ◽  
Plasma Spray ◽  
Bonding Strength ◽  
Phase Distribution ◽  
High Energy ◽  
High Energy Ball Milling ◽  
X Ray ◽  
Nanomechanical Properties ◽  
Energy Ball

Air plasma spray technique (APS) is widely used in the biomedical industry for the development of HA-based biocoatings. The present study focuses on the influence of powder homogenization treatment by high-energy ball milling (HEBM) in developing a novel hydroxyapatite-barium titanate (HA/BT) composite coating deposited by APS; in order to compare the impact of the milling process, powders were homogenized by mechanical stirring homogenization (MSH) too. For the two-homogenization process, three weight percent ratios were studied; 10%, 30%, and 50% w/w of BT in the HA matrix. The phase and crystallite size were analyzed by X-ray diffraction patterns (XRD); the BT-phase distribution in the coating was analyzed by backscattered electron image (BSE) with a scanning electron microscope (SEM); the energy-dispersive X-ray spectroscopy (EDS) analysis was used to determinate the Ca/P molar ratio of the coatings, the degree of adhesion (bonding strength) of coatings was determinate by pull-out test according to ASTM C633, and finally the nanomechanical properties was determinate by nanoindentation. In the results, the HEBM powder processing shows better efficiency in phase distribution, being the 30% (w/w) of BT in HA matrix that promotes the best bonding strength performance and failure type conduct (cohesive-type), on the other hand HEBM powder treatment promotes a slightly greater crystal phase stability and crystal shrank conduct against MSH; the HEBM promotes a better behavior in the nanomechanical properties of (i) adhesive strength, (ii) cohesive/adhesive failure-type, (iii) stiffness, (iv) elastic modulus, and (v) hardness properties.

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