Effects of environment on tensile properties of laminated composites containing a central hole

Tuo, Hongliang; Lu, Zhen; Ma, Xiaoping

doi:10.1063/1.5005303

AIP Conference Proceedings

2017

DOI: 10.1063/1.5005303

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Effects of environment on tensile properties of laminated composites containing a central hole

Hongliang Tuo¹,

Zhen Lu²,

Xiaoping Ma³

Abstract: Abstract. This study investigates the effects of environmental factors on tensile properties of laminated composites containing a central hole. Tensile tests were carried out on three types of specimens that are exposed to low temperature, room temperature and hydrothermal environment respectively. Tensile experiments were performed according to the ASTM D 5766. The results of moisture absorption tests indicated that the saturated moisture content of the specimens was around 0.7% after 1200 hours. Tensile test… Show more

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Cited by 2 publications

References 14 publications

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Evaluation of the Interaction Among Microalgae Spirulina sp, Plastics Polyethylene Terephthalate and Polypropylene in Freshwater Environment

Khoironi¹,

Anggoro²,

Sudarno³

2019

J. Ecol. Eng.

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The annual plastic production in Indonesia has exceeded 4.6 million tons and accumulated in the aquatic system. Polyethylene terephthalate (PET) and Polypropylene (PP) are the most widely used plastics in manufacture of packaging, fibres, and drinking bottles, etc. The degradation of these plastics to micro sizes leads to environmental threats, especially when the micro plastics interact with fresh water microorganism such as microalgae. Therefore, the study on the interaction between micro plastics and microorganisms is really important. The aim of this study was to evaluate the impact of microplastics on the growth of microalgae Spirulina sp and also to evaluate the contribution of microalgae Spirulina sp to the plastic degradation. The interaction between microalgae and microplastics was evaluated in a 1 L glass bioreactor contained microalgae Spirulina sp and PP and PET microplastics with the size of 1 mm at various concentrations (150 mg/500 mL, 250/500 mL and 275 mg/500 mL) for 112 days. The results showed that the tensile strength of micro plastic PET decreased by 0.9939 MPa/day while PP decreased by 0.1977 MPa/day. The EDX analysis of microplastics showed that the decreasing carbon in PET (48.61%) was higher as compared to PP (36.7%). FTIR analysis of Spirulina sp cells showed that the CO 2 evolution of cells imposed by PET microplastic was higher than imposed by PP. The growth rate of Spirulina sp applied by micro plastic was lower than the control and the increase of microplastic concentration significantly reduced the growth rate of algae by 75%. This research concluded that biodegradation has important role in the degradation process of plastic.

show abstract

Evaluation of the Interaction Among Microalgae Spirulina sp, Plastics Polyethylene Terephthalate and Polypropylene in Freshwater Environment

Khoironi¹,

Anggoro²,

Sudarno³

2019

J. Ecol. Eng.

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show abstract

Basalt Fibre-Reinforced Polymer Laminates with Eco-Friendly Bio Resin: A Comparative Study of Mechanical and Fracture Properties

Don,

Reiner,

Jennings

et al. 2024

Polymers

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Fibre-reinforced polymers (FRPs) are widely used in industry due to their impressive strength-to-weight ratio, corrosion resistance and high durability. One of the primary components of FRPs is synthetic resins, specifically epoxy, which has been identified as harmful to the environment. To address this concern, an eco-friendly alternative made from basalt fibres and bio resin has the potential to reduce the environmental impact. This study investigates Basalt Fibre-Reinforced Polymer (BFRP) laminates manufactured using two bio resins, AMPRO™ BIO and Change Climate, comparing them to one conventional epoxy resin, WEST SYSTEM®, in terms of tensile modulus, strength and fracture toughness, as well as shear properties. The results indicate that BFRP laminates made with bio resins exhibit comparable or better mechanical properties to their conventional counterparts with tensile strength being between 6 and 17% more in bio resins compared to the conventional resin, thereby paving the way for further exploration of sustainable FRP laminates in future engineering applications.

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Effects of environment on tensile properties of laminated composites containing a central hole

Cited by 2 publications

References 14 publications

Evaluation of the Interaction Among Microalgae Spirulina sp, Plastics Polyethylene Terephthalate and Polypropylene in Freshwater Environment

Evaluation of the Interaction Among Microalgae Spirulina sp, Plastics Polyethylene Terephthalate and Polypropylene in Freshwater Environment

Basalt Fibre-Reinforced Polymer Laminates with Eco-Friendly Bio Resin: A Comparative Study of Mechanical and Fracture Properties

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