The Influence of Biochemical Modification on the Properties of Adhesive Compounds

Rudawska, Anna; Haniecka, Izabela; Jaszek, Magdalena; Osińska-Jaroszuk, Monika

doi:10.3390/polym9010009

Cited by 4 publications

(3 citation statements)

References 36 publications

(60 reference statements)

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“…A vital direction of research is using different kinds of additives aimed at reducing and slowing down the changes occurring in adhesive joints. These additives may be divided into two groups based on their main purpose [42,43,44,45,46,47,48,49,50,51,52,53,54,55,56]: (i) modifying the physical propertiesl and (ii) increasing the compound’s resistance to ageing and degradation.…”

Section: Introductionmentioning

confidence: 99%

The Impact of the Seasoning Conditions on Mechanical Properties of Modified and Unmodified Epoxy Adhesive Compounds

Rudawska

2019

Polymers

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The aim of this study was to analyse the impact of the adhesive samples seasoning conditions (temperature and time) on selected mechanical properties of four epoxy adhesive compounds (two unmodified and two modified ones). The samples were made of Epidian 53 epoxy resin mixed with the two different amine curing agents in appropriate stoichiometric proportions. A filler in the form of calcium carbonate (CaCO3) powder was used as a modifier. The adhesive compound samples were cured for seven days. Six seasoning variants were used. Four of them were related with the seasoning time at ambient temperature of 24 ± 2 °C for: one month, two months, five months and eight months, respectively. Two other variants were related with seasoning at negative temperature (−10 ± 2 °C) for one month. The last variant (F) also included seasoning at ambient temperature (24 ± 2 °C) for five months right after seasoning in negative temperature. Cured and cylinder-shaped adhesive compound samples were subjected to compressive strength tests (according to the ISO 604 standard). The strength tests were performed using a Zwick/Roell Z150 testing machine. Based on the tests, it was observed that both temperature and time of seasoning influenced the adhesive’s mechanical properties. In the perspective of eight months, these changes were relatively minor for the samples seasoned at ambient temperature. The adhesive samples prepared for the tests were especially sensitive to negative temperature.

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Section: Introductionmentioning

confidence: 99%

The Impact of the Seasoning Conditions on Mechanical Properties of Modified and Unmodified Epoxy Adhesive Compounds

Rudawska

2019

Polymers

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“…In addition to this, the study also investigates the influence of seasoning on the mechanical properties of adhesive joints prepared using the modified adhesive. The properties of cured adhesives depend on the method of their preparation, the content of modifying agents, and the effect of seasoning on their mechanical properties have been described in a previous work by the authors [ 45 ].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Adhesive Compounds Biochemical Modification on the Mechanical Properties of Adhesive Joints

et al. 2018

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The main purpose of this paper was to determine the effect of biochemical modification of epoxy adhesive compounds on the mechanical properties of hot-dip galvanized steel sheet DX51+Z275 adhesive joints. The epoxy adhesives (resin and curing agent) were biochemically modified by lyophilized fungal metabolites (in the form of lyophilized fungal fractions or materials preparation containing low molecular weight secondary metabolites of lignocellulose-degrading white rot fungi (WRF) Pycnoporus sanguineus (L.) Murrill and prepared by two methods). The epoxy adhesives (epoxy resin Epidian 53 and poliaminoamide curing agent PAC) were biochemical modified by lyophilized fungal metabolites and prepared by two methods. In the first method (Method I), the epoxy resin and the curing agent were mixed with the fungal material in the desired concentration. In the second method (Method II), the resin was mixed with mortar-grounded lyophilized post-culture liquid of the desired concentration and after following thorough mixing, a suitable amount of the poliaminoamide curing agent was added. The single-lap adhesive joints were prepared by modified epoxy adhesive compounds and were cured in various climatic factors. The specimens of adhesive joints were cured at single stage at the same temperature and humidity as during adhesive bonding (Variant A and Variant B). At the second stage, Method I adhesive joints were seasoned for two months at the temperature of 50 °C and 50% humidity in a climate test chamber (Variant C). The shear strength tests of the single-lap adhesive joints were performed using a Zwick/Roell Z150 testing machine in accordance with the DIN EN 1465 standard. The analysis of results revealed that the addition of the biological modifier can lead to reduced adhesive joint strength in ambient conditions, yet at elevated temperature and the higher humidity it results in a significant increase in adhesive joint strength.

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“…Epoxy (EP) resins are a class of high‐performance thermosetting polymers produced by connecting the linear EP molecules with suitable curatives to form three‐dimensional crosslinked thermoset structures. Curing endows them with wide applications in paints and coatings, adhesives, electrical systems and electronics, laminates, and marine and aerospace tools . However, the inherent brittle nature and poor crack resistance of EP resins owing to their highly crosslinked network structure restrict their usage in mechanical components and engineering fields.…”

Section: Introductionmentioning

confidence: 99%

Enhanced interfacial interaction by grafting carboxylated‐macromolecular chains on nanodiamond surfaces for epoxy‐based thermosets

Zhang

Park

2017

J Polym Sci B Polym Phys

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A novel core‐shell‐structured carboxylated‐styrene butadiene rubber (XSBR)‐functionalized nanodiamond (ND‐XSBR) was synthesized and characterized. Epoxy (EP) nanocomposites toughened by pristine ND and ND‐XSBR were investigated and compared. The ND‐XSBR‐reinforced nanocomposite exhibited mechanical properties superior to those of the one filled by pristine ND. At a low‐filler loading, the ND‐XSBR exhibited an impressive toughening effect. The maximum flexural strength was shown when the filler loading was as low as 0.1 wt % for the EP/ND‐XSBR nanocomposite. Furthermore, enhanced fracture toughness and fracture energy were shown by surface functionalization, representing enhanced compatibility between the ND‐XSBR and EP matrix. The glass transition temperature (Tg) and storage modulus of the nanocomposites were studied, and the EP/ND‐XSBR0.1 nanocomposite exhibited the highest Tg owing to the stronger interfacial interaction. The EP/ND‐XSBR0.2 exhibited higher storage modulus and Tg than the EP/ND0.2, because the higher interfacial interaction can restrict the molecular mobility of the EP by the functionalized ND‐XSBR. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2017, 55, 1890–1898

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The Influence of Biochemical Modification on the Properties of Adhesive Compounds

Cited by 4 publications

References 36 publications

The Impact of the Seasoning Conditions on Mechanical Properties of Modified and Unmodified Epoxy Adhesive Compounds

The Impact of the Seasoning Conditions on Mechanical Properties of Modified and Unmodified Epoxy Adhesive Compounds

The Influence of Adhesive Compounds Biochemical Modification on the Mechanical Properties of Adhesive Joints

Enhanced interfacial interaction by grafting carboxylated‐macromolecular chains on nanodiamond surfaces for epoxy‐based thermosets

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