Single-polymer composites (SPCs): Status and future trends

Karger‐Kocsis, J.; Bárány, Tamás

doi:10.1016/j.compscitech.2013.12.006

Cited by 137 publications

(118 citation statements)

References 155 publications

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“…Recycling of composites and sandwich structures is also costly and complicated; since composites consist of two different materials (matrix and reinforcement) and traditional sandwich structures often consist of three (face sheet-, core material and adhesive), separation of the materials is difficult. A relatively new class of composite materials, self-reinforced polymers (SrPs), also called single-polymer or all-polymer, could combine weight savings with high recyclability at end-of-life (EOL), since fibres and matrix are based on the same recyclable polymer [7,8]. They also exhibit good mechanical properties [9,10] and may hence be attractive for automotive applications.…”

Section: Introductionmentioning

confidence: 99%

A material selection approach to evaluate material substitution for minimizing the life cycle environmental impact of vehicles

et al. 2015

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Weight reduction is commonly adopted in vehicle design as a means for energy and emissions savings. However, selection of lightweight materials is often focused on performance characteristics, which may lead to sub optimizations of life cycle environmental impact. Therefore systematic material selection processes are needed that integrate weight optimization and environmental life cycle assessment. This paper presents such an approach and its application to design of an automotive component. Materials from the metal, hybrid and polymer families were assessed, along with a novel self-reinforced composite material that is a potential lightweight alternative to nonrecyclable composites. It was shown that materials offering the highest weight saving potential offer limited life cycle environmental benefit due to energy demanding manufacturing. Selection of the preferable alternative is not a straightforward process since results may be sensitive to critical but uncertain aspects of the life cycle. Such aspects need to be evaluated to determine the actual benefits of lightweight design and to base material selection on more informed choices.

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Section: Introductionmentioning

confidence: 99%

A material selection approach to evaluate material substitution for minimizing the life cycle environmental impact of vehicles

et al. 2015

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“…A promising solution is the use of self-reinforced polymers, in which reinforcement and matrix are made from the same polymer. The commercially most important example is self-reinforced polypropylene (SRPP) [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Failure behaviour of self-reinforced polypropylene at and below room temperature

Swolfs

Fonteyne

Baets

et al. 2014

Composites Part A: Applied Science and Manufacturing

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Self-reinforced polypropylene is a very tough material. It is even thought that its impact resistance increases with decreasing temperature. This was investigated by examining the constituent tapes and matrix. Tensile tests on both drawn polypropylene tapes and self-reinforced polypropylene were similar: the stiffness increased and the failure strain slightly decreased at low temperatures. The matrix, however, embrittled below room temperature due to the glass transition. In contrast with literature data on Izod impact resistance, the penetration impact resistance did not increase at low temperatures. At lower temperatures, the damaged area after non-penetration impact was significantly reduced. This was caused by a change in the damage mode from tape-matrix debonding to matrix cracking, as the matrix went through its glass transition. These conclusions provide the first understanding of the failure behaviour of self-reinforced polypropylene below room temperature, and can be exploited to further optimise the excellent impact resistance of self-reinforced polymers.

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“…Some other processes have also been investigated, such as injection moulding [10] and continuous extrusion [11], but have not yet led to commercial exploitation. The most successful self-reinforced polymer is polypropylene (PP), as it excels in impact performance and processability [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

The influence of process parameters on the properties of hot compacted self-reinforced polypropylene composites

Swolfs

Zhang

Baets

et al. 2014

Composites Part A: Applied Science and Manufacturing

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Hot compacted self-reinforced polypropylene composites have good tensile properties and excellent impact resistance, but they have a limited processing window. Therefore, the influence of compaction temperature, dwell time and the application of interleaved films on the tensile and impact properties was assessed. Increased compaction temperature allows more molecular relaxation, thereby melting more matrix and creating a stronger interlayer bonding. This results in reduced 0° tensile properties and penetration impact resistance, while the 45° tensile properties and non-penetration impact resistance are maintained or improved. The dwell time only has minor influences on tensile and impact properties, while interleaved films have a similar influence as increased compaction temperature. These films increase the interlayer bonding, which increases the tensile strength and non-penetration impact resistance, but reduces penetration impact resistance. This paper demonstrates a wide property range depending on the processing parameters, helping in future tailoring of self-reinforced composites to specific applications.

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Single-polymer composites (SPCs): Status and future trends

Cited by 137 publications

References 155 publications

A material selection approach to evaluate material substitution for minimizing the life cycle environmental impact of vehicles

A material selection approach to evaluate material substitution for minimizing the life cycle environmental impact of vehicles

Failure behaviour of self-reinforced polypropylene at and below room temperature

The influence of process parameters on the properties of hot compacted self-reinforced polypropylene composites

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