Preparation, morphology, FTIR and performance properties of foaming particleboard

AbstractThe application of light weight particleboard in furniture industry becomes more inevitable because of the requirement to facilitate transportation and assembly by the customer. Herein, a novel method for the fabrication of foaming particleboard was proposed, which is achieved by adding azodicarbonamide (AC) foaming agent into the formulation that consist of oven-dry poplar (Populus alba) particles (with the moisture content about 4%) and phenol formaldehyde resin (PF resin) (solid content of 48%). In this study, the effects of AC foaming agent and adhesive contents incorporation and its content on mechanical, physical and chemical properties of particleboards were investigated. The results showed that the addition of AC foaming agent played a critical role in properties of particleboard and the optimal particleboard performance was achieved at the particleboard density of 0.6 g/cm3, the PF resin amount of 12%, and the AC foaming agent amount of 1%. Furthermore, the pores appeared on the particle surface were the products of the radical pyrolysis of the foaming agent, which has been proved by the FTIR results and the pores also affect the properties of the particleboards.

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PENGARUH PENAMBAHAN RESORSINOL PADA PEMBUATAN PEREKAT LIKUIDA SABUT KELAPA

Jurnal Teknik Kimia USU ◽

10.32734/jtk.v3i4.1654 ◽

2015 ◽

Vol 3 (4) ◽

pp. 37-43

Author(s):

Mutiara Istiqomah ◽

Netti Herlina

Keyword(s):

Phenol Formaldehyde ◽

Adhesive Force ◽

Phenol Formaldehyde Resin ◽

Solid Content ◽

Formaldehyde Resin ◽

Liquid Form ◽

Third Stage ◽

Ft Ir ◽

Coconut Coir ◽

Two Stages

Liquid adhesive coconut coir is the result of a reaction between lignin powder material used with aromatic compounds at high temperatures in order to obtain a solution that can be used as an adhesive. This study aims to investigate the characteristics of liquid adhesive of coconut coir (LACC) qualities and determine the effect of resorcinol in the manufacture of adhesives LACC. The study was conducted in three phases: the first stage of coir manufacturing particles, which at this stage coir made into particles of 100 mesh, adhesive manufacturing second stage LACC which at this stage there are two stages of the liquefaction reaction coir and polymerization, and the third stage addition of resorcinol LACC into the adhesive. The variables used in this study is the addition of variable rate resorcinol at 10, 20, 30% by weight. Variables - variables that were analyzed pH, viscosity, spesific gravity, solid content, formaldehyde-free rate and compound analysis using FT-IR adhesive LACC to conditions without the addition of resorcinol and with the addition of 30% resorcinol. The results showed that the addition of resorcinol LACC influence on the resulting adhesive, which has a liquid form, the pH ranged from 12.6 to 10.6, 43,867- 131.712 cps viscosity, specific gravity of 1.252 to 1.258, solid content 46.67 to 80%, from 1.952 to 1.051% formaldehyde content. FT-IR results showed similarity LACC adhesive force phenol formaldehyde resin, namely the presence of the OH group, C = H of the aromatic ring, of methylene CH, CO from ether and fenolic compound.

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Microwave Assisted Synthesis of Phenol-Formaldehyde Resole

E-Journal of Chemistry ◽

10.1155/2007/504343 ◽

2007 ◽

Vol 4 (4) ◽

pp. 457-460 ◽

Cited By ~ 1

Author(s):

Subhash Chandra Bajia ◽

Pawan Swarnkar ◽

Sudesh Kumar ◽

Birbal Bajia

Keyword(s):

Phenol Formaldehyde ◽

Chemical Properties ◽

Phenol Formaldehyde Resin ◽

Formaldehyde Resin ◽

Microwave Assisted Synthesis ◽

Physical And Chemical Properties ◽

Efficient Synthesis ◽

Microwave Assisted ◽

Physical And Chemical ◽

And Chemical Properties

An efficient synthesis of phenol-formaldehyde resin has been achieved by using conventional as well as microwave irradiation. Resin samples were tested for their physical and chemical properties. The structures of the resins have been supported by their spectral analysis.

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SYNTHESIS, CHARACTERISATION AND APPLICATION OF PHENOL-FORMALDEHYDE RESIN BLENDED WITH SULPHONATED PHYLLANTHUS EMBLICA, LINN., CARBON

JOURNAL OF ADVANCES IN CHEMISTRY ◽

10.24297/jac.v9i2.2343 ◽

2013 ◽

Vol 9 (2) ◽

pp. 1921-1932

Author(s):

R. K. Seenivasan ◽

D. Ragavan ◽

A. Girija ◽

R. Muthuramalingam

Keyword(s):

Plant Material ◽

Phenol Formaldehyde ◽

Low Cost ◽

Equilibrium Constants ◽

Chemical Properties ◽

Phenol Formaldehyde Resin ◽

Composite Resins ◽

Formaldehyde Resin ◽

Phyllanthus Emblica ◽

Weight Percentage

Phenol – Formaldehyde Resin (PFR) is blended with Sulphonated Phyllanthus emblica, Linn., Carbon (SPEC) in various proportions by weight percentage (0-50%w/w). A few composite cation-exchangers were prepared by varying the amount of SPEC (a source of cheap and renevable plant material) in the blends from 10 to 50% (w/w). Reaction conditions for the preparation of blends were optimised. IR spectra, TGA traces, and SEM photos were taken for the characterization of resins. Physico-chemical, properties of the composite resins have been determined. The composites are insoluble in various solvents and reagents and stable towards heat. Cation exchange capacity (CEC) of the composite resins, decreased with the increasing percentage of SPEC in the blend. Thermodynamic equilibrium constants (lnK) are calculated for H+ - Zn2+ exchanges on the resins having a different amount of SPEC. Thermodynamic parameters are also calculated and suitable explanations are given. The composites up to 20% (w/w) blending retains all the essential properties of the original PFR, since the Phyllanthus emblica, Linn., is the low cost, freely available plant material. Therefore, the composites could be used as low cost ion-exchangers, when SPEC partly replaces the original PFR up to 20% (w/w) blending without affecting the properties of PFR.

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Resinification of Factory-Sawdust in Phenol and Optimum Resinification Processing Parameters

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.710.142 ◽

2013 ◽

Vol 710 ◽

pp. 142-146

Author(s):

Hai Jiao Kang ◽

Qiu Hui Zhang

Keyword(s):

Sodium Hydroxide ◽

Phenol Formaldehyde ◽

Orthogonal Experiment ◽

Chemical Properties ◽

Processing Parameters ◽

Phenol Formaldehyde Resin ◽

Molar Ratio ◽

Formaldehyde Resin ◽

Wood Residues ◽

Orthogonal Experiment Method

In order to make full use of wood residues, in this study, we aimed to synthesize resol phenol-formaldehyde resin from liquefied factory-sawdust in phenol in which phenol is 5 times to factory-sawdust in presence of sulfuric acid as catalyst. By using the orthogonal experiment method, the molar ratio of formaldehyde to liquefied factory-sawdust in phenol (LSP) [n (F):n (LSP)], the molar ratio of sodium hydroxide to liquefied factory-sawdust in phenol [n (NaOH) : n (LSP)], the resinification temperature and the resinification time on chemical properties of liquefied sawdust resins (LSR) were investigated. The results show that the ratio of sodium hydroxide to liquefied factory-sawdust in phenol plays the most important role in the processing of resinification, the ratio of formaldehyde to liquefied factory-sawdust in phenol follows, the resinification time and the resinification temperature come to the last two. The optimum processing conditions are as follows: [n (NaOH) : n (LSP)]=0.5, [n (F) : n (LSP)]=2.0, resinification temperature is 80 °C and resinification time is 3.0h. The physical properties of the poplar three-layer plywood bonded with LSR were similar to those with normal PF resins and also satisfied the demands of I level.

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Effect of Technology Factors on the Resin Impregnation Results of Poplar

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.750-752.2352 ◽

2013 ◽

Vol 750-752 ◽

pp. 2352-2356

Author(s):

Jian Han ◽

Kai Neng Liu ◽

Xi Tao Gao

Keyword(s):

Phenol Formaldehyde ◽

Urea Formaldehyde ◽

Weight Percent Gain ◽

Weight Percent ◽

Phenol Formaldehyde Resin ◽

Solid Content ◽

Formaldehyde Resin ◽

Test Pieces ◽

Resin Impregnation ◽

Impregnation Temperature

Aimed to improve the properties of Poplar, this study, taking phenol-formaldehyde resin (PF) and urea-formaldehyde resin (UF) as impregnation resin, probed the effect of the technology factors-vacuum time, solid content of resin, impregnation temperature and time on the impregnation results of Poplar, and the relationship between the resin and the wood was researched through infrared spectrum. The weight percent gain (WPG) of test-pieces increased with vacuum time extending, and WPG of the test-pieces were greatest when the solid content of resin was 30%, and the impregnation temperature was 25-30°C. when the impregnation time extended from 3 h to 9 h, WPG of the test-pieces presented increase trend which wasnt obvious. In this wood impregnated resin, the reaction between the resin and the hydroxy in wood formed ether bond binding, which proved that the resin and the wood occurred the chemical reaction.

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Effect of Boron and Phosphorus Compounds on Fire and Technological Properties of Oriented Strandboard

Materials International ◽

10.33263/materials22.117122 ◽

2020 ◽

Vol 2 (2) ◽

pp. 117-122

Keyword(s):

Mechanical Properties ◽

Boric Acid ◽

Phenol Formaldehyde ◽

Fire Retardant ◽

Phenol Formaldehyde Resin ◽

Solid Content ◽

Phosphorus Compounds ◽

Formaldehyde Resin ◽

Technological Properties ◽

Thickness Swelling

Effects of various fire retardant chemicals on fire and technological properties of laboratory made oriented strandboards (OSBs) were investigated. Aspen chips were used in the production of OSB panels. An exterior liquid phenol formaldehyde resin with 47 percent solid content was used as adhesive. There was no addition of any hardener and filling materials into resin in the OSB manufacturing. Boron compounds such as borax and boric acid, and phospate compounds such as monoammonium phosphate and diammonium phospahate were used as fire retardant chemicals in the OSB panels. An exterior liquid phenol formaldehyde resin was used as adhesive. The chemicals in powder form were added into the resin blender at contents of 2%, 4%, and 6% based on oven-dry wood weight. The OSB panels containing borax had the highest thickness swelling, followed by the panels containing boric acid, monoammonium phospahate, and diammonium phosphate, respectively. Increasing the content of these chemicals in the OSB resulted in greater thickness swelling. For the mechanical properties, the chemicals can be used up to oven dry particle weight of 6% in the panels at humid and dry conditions because of the fact that they met the standard values of mechanical properties given in TS EN 300 for types of OSB/3 (exterior type. Fire resistance of the panels was improved with increased chemical content in the panels.

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Purification of water contaminated with heavy metals by example of lead as promising material based on graphene nanostructures

Perspektivnye Materialy ◽

10.30791/1028-978x-2020-9-34-43 ◽

2020 ◽

pp. 34-43

Author(s):

N. R. Memetov ◽

◽

A. V. Gerasimova ◽

A. E. Kucherova ◽

◽

...

Keyword(s):

Adsorption Process ◽

Phenol Formaldehyde ◽

Phenol Formaldehyde Resin ◽

Formaldehyde Resin ◽

Parameter Estimates ◽

Maximum Adsorption Capacity ◽

Ecological Situation ◽

Characteristic Parameters ◽

Purification Of Water ◽

Graphene Nanostructures

The paper evaluates the effectiveness of the use of graphene nanostructures in the purification of lead (II) ions to improve the ecological situation of water bodies. The mechanisms and characteristic parameters of the adsorption process were analyzed using empirical models of isotherms at temperatures of 298, 303, 313 and 323 K, which correspond to the following order (based on the correlation coefficient): Langmuir (0.99) > Temkin (0.97) > Dubinin – Radushkevich (0.90). The maximum adsorption capacity of the material corresponds to the range from 230 to 260 mg/g. We research the equilibrium at the level of thermodynamic parameter estimates, which indicates the spontaneity of the process, the endothermic nature and structure change of graphene modified with phenol-formaldehyde resin during the adsorption of lead (II) ions, leading to an increase in the disorder of the system.

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