Characterization of polyurethane adhesives containing nanosilicas of different particle size

Bahattab, Mohammed A.; Donate-Robles, Jessica; García-Pacios, Vanesa; Martı́n-Martı́nez, José Miguel

doi:10.1016/j.ijadhadh.2010.11.001

Cited by 44 publications

(23 citation statements)

References 14 publications

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“…It is apparent from Equation (3) that when the interfacial tension, γ SL, is equal to zero, the work of adhesion is maximized. The data in Table 3 indicate that water contact angle (θ) on the POX film (64-67 • ) was lower than that for the reference commercial hot melt adhesive (82 • ) and lower than that of polyurethane adhesives (75 • ) [47], which resulted from the highly polar character of POX due to a high abundancy of hydroxyl groups; this low water contact angle demonstrates strong adhesive interactions with polar substrates. The supposition is confirmed by the work of adhesion (W a ) values 101-105 mJ/m 2 , which were just ca.…”

Section: Resultsmentioning

confidence: 97%

Poly-(3-ethyl-3-hydroxymethyl)oxetanes—Synthesis and Adhesive Interactions with Polar Substrates

Parzuchowski

Mamiński

2020

Polymers

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Hyperbranched polyoxetanes are a relatively new class of polymers. These are branched polyethers that are synthesized from oxetanes—four-member cyclic ethers bearing hydroxymethyl groups—via ring-opening polymerization. Four series of polyoxetanes were synthesized from 3-ethyl-3-(hydroxymethyl)oxetane and 1,1,1-tris(hydroxymethyl)propane as a core molecule. Reagents ratios ranged from 1:5 to 1:50, theoretical molar mass ranged from 714 g/mol to 5942 g/mol, and dispersities ranged from 1.77 to 3.75. The morphology of the macromolecules was investigated by a matrix-assisted laser desorption/ionization time of flight technique. The polyoxetanes’ adhesive interactions with polar materials were analyzed and provided results as follows: the work of adhesion was 101–105 mJ/m2, the bond-line tensile shear strengths were 0.39–1.32 MPa, and there was a brittle fracture mode within the polymer. The findings confirmed a good adhesion to polar substrates, but further research on polyoxetane modifications toward a reduction of brittleness is necessary.

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Section: Resultsmentioning

confidence: 97%

Poly-(3-ethyl-3-hydroxymethyl)oxetanes—Synthesis and Adhesive Interactions with Polar Substrates

Parzuchowski

Mamiński

2020

Polymers

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“…Meanwhile, Romero‐Sanchez et al and Donate‐Robles and Martin‐Martinez investigated the effect of calcium carbonate on the adhesion property of styrene‐butadiene‐styrene block rubber and thermoplastic polyurethane adhesives, respectively. Bahattab et al and Wolf et al also reported the adhesion behavior of polyurethane and epoxy adhesives in the presence of nanofillers in which shear and peel strength were enhanced by the addition of nanosilica and carbon nanotube fillers. Significant improvement of thermal stability and single lap shear joint strength of epoxy adhesive loaded with metallic and nonmetallic particles was observed .…”

Section: Introductionmentioning

confidence: 98%

Effect of zinc oxide and testing rate on the adhesion property of styrene-butadiene rubber/standard Malaysian rubber blend adhesives

Poh

Teh

2014

J Vinyl Addit Technol

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The effect of zinc oxide and testing rate on tack, peel strength, and shear strength of styrene‐butadiene rubber (SBR)/standard Malaysian rubber (SMR L) blend adhesive was investigated using coumarone‐indene resin and toluene as the tackifying resin and solvent, respectively. Zinc oxide concentration was varied from 0–50 parts per hundred parts of rubber (phr). A Lloyd Adhesion Tester operating from 10–60 cm/min was used to determine the adhesion property. Results show that tack and peel strength increases with zinc oxide concentration up to 20 phr of the filler loading. This observation is attributed to the varying degree of wettability, which culminates at 20 phr of zinc oxide content. For the shear strength, it increases steadily with zinc oxide loading, an observation that is associated to the steady increase in cohesive strength due to the interaction between the adhesive and the filler. The adhesion property increases with testing rate and coating thickness. J. VINYL ADDIT. TECHNOL., 22:3–7, 2016. © 2014 Society of Plastics Engineers

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“…Zhai et al (2006) demonstrated that incorporating epoxy adhesive with nanoparticles (nanoAl 2 O 3 homogeneously dispersed in epoxy adhesive) could distinctly increase the adhesion strength of epoxy adhesive. Bahattab et al (2011) increased shear adhesion strength values of polyurethane bonds by fi lling with nanosilicas of diff erent particle size from the value 14.2 ± 0.1 MPa to the value 15.3 ± 0.3 MPa (100 nm, 30 wt%).…”

Section: Introductionmentioning

confidence: 99%

Possibilities of Adhesives Filling With Micro-particle Fillers - Lap-shear Tensile Strength

Valášek¹,

Müller²

2016

Acta Univ. Agric. Silvic. Mendelianae Brun.

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An adhesive bonding can be ranged among technologies of materials bonding which are used in all industrial branches. It plays its important role also in an area of the construction of agricultural machines, e.g. tractors, harvestors etc. Utility properties of adhesives can be extended by using various types of fi llers. These fi llers increase some mechanical characteristics of adhesives and not last they can decrease resultant price. The paper focuses on a possibility to fi ll the adhesives showing increased lap-shear tensile strength. These adhesives are used e.g. for adhesive bonding of coach bodies in an automotive industry so that is why it is possible to apply them also in the agricultural area. Laboratory experiments describe the lap-shear tensile strength of rigid adherents which were bonded with adhesives with a variable concentration of micro-particle fi ller -a glass powder. T-test used for a comparison of the shear strength of the bonds created with the adhesives with 5 vol.% of the glass powder did not evidence a statistically signifi cant diff erence comparing with the unfi lled adhesives. This priece of knowledge opens a possible way of a material usage of the glass powder in the area of the adhesive bonding.

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Characterization of polyurethane adhesives containing nanosilicas of different particle size

Cited by 44 publications

References 14 publications

Poly-(3-ethyl-3-hydroxymethyl)oxetanes—Synthesis and Adhesive Interactions with Polar Substrates

Poly-(3-ethyl-3-hydroxymethyl)oxetanes—Synthesis and Adhesive Interactions with Polar Substrates

Effect of zinc oxide and testing rate on the adhesion property of styrene-butadiene rubber/standard Malaysian rubber blend adhesives

Possibilities of Adhesives Filling With Micro-particle Fillers - Lap-shear Tensile Strength

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