Glutaraldehyde-modified MUF adhesive system – Improved hot water resistance

2006 ◽  
Vol 65 (3) ◽  
pp. 251-253 ◽  
Author(s):  
M. L. Mamiński ◽  
J. Pawlicki ◽  
A. Zado ◽  
P. Parzuchowski
Keyword(s):  
Water Resistance ◽  
Adhesive System ◽  
Hot Water

Hot water resistance of glass-fiber and glass-bead reinforced thermoplastics

2003 ◽  
Vol 24 (1) ◽  
pp. 181-191 ◽  
Author(s):  
Takafumi Kawaguchi ◽  
Hiroyuki Nishimura ◽  
Kazunori Ito ◽  
Takashi Kuriyama ◽  
Ikuo Narisawa
Keyword(s):  
Glass Fiber ◽  
Glass Bead ◽  
Water Resistance ◽  
Hot Water ◽  
Reinforced Thermoplastics

Improving Hot-Water Resistance of Melamine-Urea-Formaldehyde by Addition of PolyFox PF-151N Polymer

2013 ◽  
Vol 89 (11) ◽  
pp. 837-846 ◽  
Author(s):  
H. R. Mansouri ◽  
A. Moubarik ◽  
A. Pizzi
Keyword(s):  
Water Resistance ◽  
Urea Formaldehyde ◽  
Hot Water

A new soy flour-polyepoxide adhesive system for making interior plywood

Holzforschung ◽  
2012 ◽  
Vol 66 (4) ◽  
Author(s):  
Jian Huang ◽  
Chunhong Li ◽  
Kaichang Li
Keyword(s):  
Water Resistance ◽  
Crosslinking Agent ◽  
Environmentally Friendly ◽  
Adhesive System ◽  
Soy Flour ◽  
Renewable Materials ◽  
Yellow Poplar ◽  
Crosslinking Agents

Abstract In this study, triglycidylamine (TGA) was synthesized and evaluated as a crosslinking agent for soy flour (SF) for making five-ply plywood from yellow poplar. Glycerol polyglycidyl ether (GPE) and trimethylolpropane triglycidyl ether (TTE) were also investigated as crosslinking agents for SF as adhesive for plywood. The plywood panels bonded with SF-TGA and SF-GPE adhesives did meet and those with SF-TTE adhesive did not meet the water-resistance requirement for interior application. The former two adhesives are formaldehyde-free, environmentally friendly, easy to use and readily available. They can be derived completely from renewable materials. The adhesion mechanisms are discussed in detail.

Hot Water Resistance of Glass Fiber Reinforced Thermoplastics

1999 ◽  
pp. 99-104 ◽  
Author(s):  
Takafumi Kawaguchi ◽  
Hiroyuki Nishimura ◽  
Fumiaki Miwa ◽  
Kazunori Ito ◽  
Takashi Kuriyama ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Water Resistance ◽  
Hot Water ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced ◽  
Reinforced Thermoplastics ◽  
Fiber Reinforced Thermoplastics

Physical Properties of Polyester Polymer Concrete Composite Using RCSS Fine Aggregate

2013 ◽  
Vol 687 ◽  
pp. 219-228
Author(s):  
Eui Hwan Hwang ◽  
Jin Man Kim ◽  
Sun Gyu Park
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Physical Properties ◽  
Water Resistance ◽  
Strength Test ◽  
Polymer Binder ◽  
Hot Water ◽  
Resistance Test ◽  
Polymer Concrete ◽  
Fine Aggregate

For the recycling of rapid-cooled steel slag (RCSS), various specimens were prepared with the different replacement ratios of RCSS and the addition ratios of polymer binder. The physical properties of these specimens were then investigated by compressive strength test, flexural strength test, water absorption test, hot water resistance test, measurement of pore distribution and observation of micro-structures using scanning electron microscope(SEM). Results showed that compressive and flexural strength increased with the addition ratios of polymer binder and replacement ratios of RCSS, but those strengths decreased reversely when addition ratio of polymer binder and replacement ratio of RCSS were excessively high. By the hot water resistance test, the compressive strength and flexural strength decreased remarkably and total pore volume increased but bulk density decreased. SEM observation of structure before hot water resistance test revealed very compact infusion of structure but decomposition or thermal degradation appeared in polymer binder when observed after the hot water resistance test.

Optimising the process for production of high performance bagasse-based composites from rice bran-UF adhesive system

2014 ◽  
Vol 43 (4) ◽  
pp. 212-218 ◽  
Author(s):  
Altaf H. Basta ◽  
Houssni El-Saied ◽  
Emad M. Deffallah
Keyword(s):  
Environmental Impact ◽  
High Performance ◽  
Water Resistance ◽  
Urea Formaldehyde ◽  
Adhesive System ◽  
Wood Products ◽  
Particle Board ◽  
Wood Industry ◽  
Content Type ◽  
Board Strength

Purpose – The purpose of this paper is to prepare high-performance agro-based composites from the non-toxic rice bran-urea-formaldehyde (RB-UF) adhesive system. Investigations have continued for production high performance agro-based composites using environmentally acceptable approaches. The utilisation of such system with the available used local agro-based wood products (sugar-cane bagasse, SCB) adds economic value and helps reducing the environmental impact of commercial urea-formaldehyde (UF) adhesive, and most importantly, provides a potentially inexpensive alternative to the existing commercial artificial wood-panel mills. Design/methodology/approach – Optimising the process for incorporating the RB in UF, as wood adhesive for binding the bagasse fibres, was carried out, by partially replacing commercial UF by denaturalised RB in slurry (wet) and dry form or through synthesis of UF. The denaturalisation of RB was carried out at different pHs (10-11) and at temperature 60°C for two hours. While incorporating the RB during synthesis of UF, it was carried out according to the method reported elsewhere. The formulation of adhesive components, pH value of the denaturalisation stage and the process of incorporating the RB were optimised. Assessment of the role of RB adhesive was specified from its free-formaldehyde (HCHO) content, as well as the properties (mechanical and physical properties) of the produced composites of bagasse particle board type, in comparison with the environmental impact of commercial thermosetting resin (UF). Findings – The promising adhesive system exhibits improvement in the environmental performance (as E1 type) over a commercially UF adhesive (as E2 type), besides providing boards fulfill the requirements of grade H-3 (according to ANSI A208.1 (NPA1993). This adhesive system was resulted from replacing 30 per cent of UF by denalturalised RB (at pH 10) in slurry form. Where, its reduction in free-HCHO reached 53 per cent, as well as modulus of rupture (MOR), modulus of elasticity (MOE), internal bond (IB) and TS of the produced boards were approximately 24.2 N/mm2, approximately 3753 N/mm2, approximately 0.84 N/mm2 and approximately 11.4 per cent, respectively. Research limitations/implications – The eco-adhesive with relatively high percentage of low-cost commercial UF (70 per cent) and 30 per cent RB, as oil production by-product, in slurry form provides good board strength and is environmentally friendly compared to SCB-based composite properties, with that produced from commercial UF. The mechanical (MOR, MOE and IB) and water-resistance properties of the produced composite comply with the standard values. Practical implications – The approach provided low HCHO-free UF adhesive with good comparative board strength and water resistance and reasonable working life. Replacing 30 per cent of UF by RB in slurry form and denaturalised at pH 10 is considered a promising inexpensive alternate adhesive (as E1) in the wood industry based on SCB wastes. Social implications – Incorporating the RB by-product of oil production to commercial UF will be beneficial for saving the health of wood co-workers and motivating the wood mill to export its wood products. Originality/value – It provided a potentially simple way to improve both the utilisation of commercial UF and SCB as industrial substrates for particle-board production. This will benefit farmers, local wood mills in Upper Egypt, significantly. Meanwhile, incorporating low percentage of RB, as oil-mill by-products, is promising to partly replace UF resin in the wood industry, minimising formaldehyde emission or toxic gasses during board formation.

TESTS FOR HOT-WATER RESISTANCE OF TANK ENAMELS

1947 ◽  
Vol 30 (7) ◽  
pp. 220-226 ◽  
Author(s):  
Dwight G. Moore ◽  
William N. Harrison
Keyword(s):  
Water Resistance ◽  
Hot Water

The impact of hot-water-treated fibre hemp shivs on the water resistance and thermal insulating performance of corn starch bonded biocomposite boards

2019 ◽  
Vol 137 ◽  
pp. 290-299 ◽  
Author(s):  
Arūnas Kremensas ◽  
Agnė Kairytė ◽  
Saulius Vaitkus ◽  
Sigitas Vėjelis ◽  
Sylwia Członka ◽  
...  
Keyword(s):  
Water Resistance ◽  
Corn Starch ◽  
Hot Water ◽  
Thermal Insulating ◽  
The Impact

Improvement of hot water resistance of poly(vinyl alcohol) hydrogel by acetalization and irradiation techniques

1995 ◽  
Vol 55 (12) ◽  
pp. 1619-1625 ◽  
Author(s):  
Darmawan Darwis ◽  
Fumio Yoshii ◽  
Keizo Makuuchi ◽  
Mirzan T. Razzak
Keyword(s):  
Vinyl Alcohol ◽  
Water Resistance ◽  
Hot Water ◽  
Poly Vinyl Alcohol
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