Mechanical Properties of Polyurethane Adhesive Bonds in a Mineral Wool-Based External Thermal Insulation Composite System for Timber Frame Buildings

Sudol, E. David; Kozikowska, Ewelina

doi:10.3390/ma14102527

Cited by 13 publications

(14 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The measured adhesive strength values are comparable, for example, with polymer-based degradable adhesives used for surgery and tissue engineering (range 1-100 kPa) [73,74] and polyurethane-based adhesive for wood (≈80 kPa). [75] The inclusion of conductive fillers inside insulating matrixes is effective toward inducing electrical conductivity in the resulting composites. [76] The minimum filler loading required to switch the composite from an insulator to a conductor is the electrical percolation threshold.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

An Electrically Conductive Oleogel Paste for Edible Electronics

Cataldi

Lamanna

Bertei

et al. 2022

Adv Funct Materials

View full text Add to dashboard Cite

Edible electronics will facilitate point-of-care testing through safe devices digested/degraded in the body/environment after performing a specific function. This technology, to thrive, requires a library of materials that are the basic building blocks for eatable platforms. Edible electrical conductors fabricated with green methods and at a large scale and composed of food derivatives, ingestible in large amounts without risk for human health are needed. Here, conductive pastes made with materials with a high tolerable upper intake limit (≥mg kg −1 body weight per day) are proposed. Conductive oleogel composites, made with biodegradable and food-grade materials like natural waxes, oils, and activated carbon conductive fillers, are presented. The proposed pastes are compatible with manufacturing processes such as direct ink writing and thus are suitable for an industrial scale-up. These conductors are built without using solvents and with tunable electromechanical features and adhesion depending on the composition. They have antibacterial and hydrophobic properties so that they can be used in contact with food preventing contamination and preserving its organoleptic properties. As a proof-of-principle application, the edible conductive pastes are demonstrated to be effective edible contacts for food impedance analysis, to be integrated, for example, in smart fruit labels for ripening monitoring.

show abstract

Section: Resultsmentioning

confidence: 99%

“…The measured adhesive strength values are comparable, for example, with polymer‐based degradable adhesives used for surgery and tissue engineering (range 1–100 kPa) [ 73,74 ] and polyurethane‐based adhesive for wood (≈80 kPa). [ 75 ]…”

Section: Resultsmentioning

confidence: 99%

An Electrically Conductive Oleogel Paste for Edible Electronics

Cataldi

Lamanna

Bertei

et al. 2022

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…However, other solutions are often proposed based on the use of wood waste or other biomasses [ 7 , 8 , 9 ]. The inside of the frame is filled with an insulating material that achieves various functions: thermal insulation [ 10 ], acoustic insulation [ 11 , 12 ], and structural reinforcement [ 13 ]. Insulation materials are often mineral wool [ 10 ], polyurethane foams (PU foams) [ 13 , 14 , 15 ], or other solutions based on waste from various biomasses [ 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Openings’ Size and Location on Selected Dynamical Properties of Typical Wood Frame Walls

et al. 2022

View full text Add to dashboard Cite

The wooden frame constructions are now popular in many developed countries of the world. Many of these locations where such buildings are constructed are exposed to seismic and other shocks which are generated by human activities. This paper discusses the effect of the size and location of openings in the wooden frame walls under dynamic loadings. Natural frequencies of such frames with and without openings have been determined. Three 14 m high walls with different widths, including 3, 6, and 12 m, have been considered. Dynamic analysis has been made using finite element method structural analysis software Dlubal RFEM 5.17. The results show that the effect of the size and location of the openings on the natural frequency is significant. Numerically speaking, the relative change of the natural frequencies of a wall without and with an opening in a specific place could be up to 30%. In addition, the change of the natural frequency for the location of the openings is more sensitive than that to the sizes. Furthermore, the appropriate sizes and locations of openings of the wooden frame walls have been suggested. The appropriate size and place were found to be small openings in the top of the walls.

show abstract

“…Only based on the (strictly defined and experimentally determined) relative machinability indexes can the machinability of different materials can be compared-not only in a qualitative (descriptive), but also in a quantitative (numerical) way. This kind of comparison, made for different types of wood-based boards, seems to be very important from the point of view of their designers, producers, and potential users, especially when an innovative wood-based material is to be developed [5,[7][8][9]13,14]. Simple, fast, and inexpensive testing methods are necessary to characterize their machinability properties.…”

Section: Introductionmentioning

confidence: 99%

Experimental Verification of a Highly Simplified, Preliminary Machinability Test for Wood-Based Boards in the Case of Drilling

Podziewski

Śmietańska

Górski

2021

Forests

View full text Add to dashboard Cite

In contrast to metalworking there are no standardized or (at least) generally accepted, relative machinability tests for innovative or less known wood-based panels. The most reliable testing procedures are based on the use of a specialized, accurate system for measuring cutting forces and on conducting all tests in conditions that are similar to real industrial conditions (machine tool, cutting parameters etc.). However, the need for a more simplified testing procedure has often been voiced—not all scientists specializing in wood-based materials development have a machine tool comparable to one that can be found in a real furniture factory and piezoelectric force sensors at their unlimited disposal. To meet this need, the highly simplified, preliminary machinability test for wood-based boards in the case of drilling was developed and tried. The results of experimental research suggest that the simplified way of testing of relative machinability of wood-based boards (i.e., testing based on the photoelectric measurement of the time needed to make a 10 mm deep hole under constant feed force) can be a useful substitute of standard machinability testing procedure (based on accurate cutting forces measurements carried out in the standard industrial conditions). When verifying the simplified testing procedure, samples from each of the three basic groups of wood-based materials of substantially different internal structures (fiberboard, particleboard, and veneer boards) were tested. The relationship between significantly reliable and highly simplified machinability indexes turned out to be at a satisfactory level (R2 = 0.97 for particleboards and R2 = 0.95 for fiberboards or boards made of veneer or solid wood). The use of a simplified procedure can be especially pragmatic in case of any preliminary testing of innovative wood-based boards during the material development work.

show abstract

Mechanical Properties of Polyurethane Adhesive Bonds in a Mineral Wool-Based External Thermal Insulation Composite System for Timber Frame Buildings

Cited by 13 publications

References 32 publications

An Electrically Conductive Oleogel Paste for Edible Electronics

An Electrically Conductive Oleogel Paste for Edible Electronics

The Effect of Openings’ Size and Location on Selected Dynamical Properties of Typical Wood Frame Walls

Experimental Verification of a Highly Simplified, Preliminary Machinability Test for Wood-Based Boards in the Case of Drilling

Contact Info

Product

Resources

About