Soy Protein Adhesive Blends with Synthetic Latex on Wood Veneer

Qi, Guangyan; Sun, Xiuzhi Susan

doi:10.1007/s11746-010-1666-y

Cited by 89 publications

(60 citation statements)

References 23 publications

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“…Blending natural products with synthetic resins is a short-term solution for reducing dependence on petrochemicals and lowering emissions of volatile organic compounds (Qi & Sun, 2011). Thus, we tested the bonding performance of the blend of WCSM and Vinavil 2259 L. With the hot press temperature at 130 o C, the blend of WCSM and Vinavil 2259 L showed similar adhesive performance as the Vinavil 2259 L and its water diluted solution (Table 6).…”

Section: Blending Wcsm With Vinavil 2259 Lmentioning

confidence: 99%

Adhesive Strength of Pilot-Scale-Produced Water-Washed Cottonseed Meal in Comparison with a Synthetic Glue for Non-Structural Interior Application

He¹,

Chiozza²

2017

JMSR

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Water-washed cottonseed meal (WCSM) has been shown the potential to be used as renewable and environmentfriendly adhesives in wood products industry. Recently, WCSM was produced from defatted meal in a pilot scale. In this study, we initially compare the adhesive strength of the pilot-produced WCSM with that of a synthetic glue Vinavil 2259 L. WCSM may be used as the conventional D1 wood adhesives for nonstructural interior application per European standard EN204/205. Non-structural D3 type adhesives is more widely used in protected outside. Under the testing conditions, WCSM possessed very high heat resistance according to European standard EN14257 (WATT 91)-adhesive strength after 1 hour at 80°C. However, the dry strength (EN204/205) and water resistance (specimen were put in water for 4 days and then pulled in the dynamometer) of WCSM were lower than those of the synthetic glue Vinavil 2259 L. Blending WCSM with Vinavil 2259 L improved the water resistance of WCSM, allowing the classification of the WCSM adhesive as D3. Further work will be focused on the increase of solid content of the final adhesive slurries and the improvement of their water resistance.

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Section: Blending Wcsm With Vinavil 2259 Lmentioning

confidence: 99%

Adhesive Strength of Pilot-Scale-Produced Water-Washed Cottonseed Meal in Comparison with a Synthetic Glue for Non-Structural Interior Application

He¹,

Chiozza²

2017

JMSR

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“…High-viscosity adhesives are not suitable for use in the wood composite industry, while low-viscosity ones allow easy handling and good flowability on the wood surface (Qi and Sun 2011). The apparent viscosity and flow behavior curves of SM adhesives modified with different amounts of added PEGDA are shown in Figs.…”

Section: Effect Of Pegda On Rheological Properties Of Sm Adhesivementioning

confidence: 99%

Preparation of Wood Adhesives Based on Soybean Meal Modified with PEGDA as a Crosslinker and Viscosity Reducer

Gao

Qin

et al. 2013

BioResources

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To increase the water resistance and reduce the viscosity of soybean meal (SM)-based non-formaldehyde wood adhesives, polyethyleneglycol diacrylate (PEGDA) used as crosslinker and viscosity reducer was introduced into the SM adhesive system. The apparent viscosity was evaluated by rheological measurements; gel content and water absorption of adhesives, the wet shear strength of plywood bonded with these modified adhesives were tested to evaluate their water resistance. In addition, the crosslink structures of modified adhesives were characterized by Fourier transform infrared (FTIR) spectroscopy and solid-state 13 C NMR analysis. The results indicated that all of the SM adhesives were pseudoplastic fluids with the property of shear-thinning. The viscosity of modified SM adhesives effectively decreased by 35% compared with the addition of PEGDA, and the wet shear strength of their bonded plywood increased; the wet shear strength of plywood bonded with 4% PEGDA-modified SM adhesive increased 114.2% compared to SM adhesive. FTIR spectroscopy and solid-state 13 C NMR analysis demonstrated that the crosslinking reaction of the PEGDA occurred successfully during the curing process of PEGDA modified SM adhesive, and no crosslinking reaction between the PEGDA and soy meal adhesive appeared to have occurred. Interpenetrating networks (IPNs) might be formed between the cured PEGDA and SM adhesive system.

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“…Bio-based soybean proteins are potential adhesives with utility in the wood composites, packaging, and labeling industries (Zhong and Sun 2001;Zhong et al 2002). Adhesives based on soybean meal have been in use since the 1920s (Huang and Sun 2000), but they can only be used in a narrow field, and their development is limited by their poor water resistance and bonding strength (Qi and Sun 2011).…”

Section: Introductionmentioning

confidence: 99%

Effects of Hot-Pressing Parameters on Shear Strength of Plywood Bonded with Modified Soy Protein Adhesives

Chen

et al. 2014

BioResources

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The heating rate of the core layer of plywood during hot-pressing is of great importance to the final quality of the plywood and is affected by many factors, such as the hot-pressing temperature (THP), hot-pressing pressure (PHP), hot-pressing time (tHP), veneer layers, and moisture content. In this study, multi-plywood using modified soy protein (MSP) adhesives prepared to investigate the effects of THP, tHP, and veneer layers on the core layer temperature during hot-pressing. The results indicated that all the core layer temperature curves were divided into four stages. The first constant temperature stage and the slow warming stage were decisive with respect to the time needed for the core layer to reach the THP. The time of moisture vaporization was approximately 400 s in the 3-layer plywood and approximately 900 s in the 5-layer plywood. In order to get an ideal strength the tHP should greater than the time of moisture vaporization; therefore in theory, the optimum parameters of the 3-layer plywood production were tHP of 600 to 720 s and THP of 120 to 125 °C. The research provides a theoretical basis for optimizing the hotpressing of plywood.

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Soy Protein Adhesive Blends with Synthetic Latex on Wood Veneer

Cited by 89 publications

References 23 publications

Adhesive Strength of Pilot-Scale-Produced Water-Washed Cottonseed Meal in Comparison with a Synthetic Glue for Non-Structural Interior Application

Adhesive Strength of Pilot-Scale-Produced Water-Washed Cottonseed Meal in Comparison with a Synthetic Glue for Non-Structural Interior Application

Preparation of Wood Adhesives Based on Soybean Meal Modified with PEGDA as a Crosslinker and Viscosity Reducer

Effects of Hot-Pressing Parameters on Shear Strength of Plywood Bonded with Modified Soy Protein Adhesives

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