The effect of silane coupling agents on radiata pine fibre for use in thermoplastic matrix composites

Pickering, Kim L.; Abdalla, Ali; Ji, Chenzhen; McDonald, Armando G.; Franich, Robert A.

doi:10.1016/s1359-835x(03)00234-3

Cited by 151 publications

(97 citation statements)

References 20 publications

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“…While water absorption only occurs at the surface for glass fibers, cellulose fibers can have thorough interaction with water because of their bulk structure. Attention should be paid to the relative humidity of the surrounding atmosphere, purity of cellulose and degree of crystallinity when evaluating the quantity of water absorbed by composites [19].…”

Section: Resultsmentioning

confidence: 99%

The Influence of Chemically Pre-treated Chestnut Waste and Pinecone Filler Content on the Properties of Polyester Composites

Borazan¹,

Gokdai²,

Açıkgöz³

et al. 2017

eer

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There is critical concern about meeting future global demand for materials because of the depletion of natural resources. In particular, the balance between future demand and sustainable supply will require a great deal of attention in years to come. The interest in the long term sustainability of material resources has led to advancements in bio-composite or polymer composite materials that are made from natural fibers and resin. Pinecones and chestnut waste are most often used as the biomass/biochar source. Nature proposes, and man disposes; we have to find or create new forms of pinecone and chestnut waste to increase their value and for environmental reasons. That is why the current waste was processed and transformed to filler in an up-graded state. In this study, composites were manufactured using chestnut waste and pinecone powder as filler and polyester as the polymer matrix. In addition, methyl ethyl ketone peroxide as hardener and cobalt naphthenate as accelerator were used to produce polyester composite. Raw materials of the fillers were treated with sodium hydroxide solution. The polyester amount was kept constant while the filler ratio was increased from 3% to 12% by weight. The similarities and differences between composites with different fillers and chemical pre-treatments were assessed by evaluating certain mechanical properties such as flexural strength, elastic modulus and hardness and various physical features such as density, open porosity percentage and water absorption. According to the experimental results, increasing the ratio of both chestnut and pinecone powder led to a decrease in the bending strength and an increase in the elastic modulus. Higher properties were associated with the chestnut waste/polyester composite than the pinecone powder/polyester composite.

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Section: Resultsmentioning

confidence: 99%

The Influence of Chemically Pre-treated Chestnut Waste and Pinecone Filler Content on the Properties of Polyester Composites

Borazan¹,

Gokdai²,

Açıkgöz³

et al. 2017

eer

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“…Fine or small filler particles were found to improve the mechanical properties, for example, the stiffness of polymer composites more than the large ones. The only drawback to the use of finer particles was their tendency to agglomerate [15][16][17].…”

Section: Resultsmentioning

confidence: 99%

Fracture Toughness of Vinyl Ester Composites Reinforced with Sawdust and Postcured in Microwaves

Prajapati

Trada

2012

International Journal of Microwave Science and Technology

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A commercial vinyl ester resin supplied by Hetron Chemical Pty. was reinforced with varying percentages by weight of sawdust. The sawdust particles were sieved into 3 different sizes, which were <300 μm, 300-425 μm, and 425-1180 μm, respectively, with a view to increase its fracture toughness for civil and structural applications. The sawdust used varied from 0% w/t to 15% w/t in step of 5% w/t. For higher w/t% of sawdust, the mixture would be too sticky to be mixed and cast. The cast composites were cured in ambient conditions and then postcured in microwave irradiation. They were then tested for fracture toughness using short bar tests. The values of fracture toughness of the composites increased with increasing particulate size, and this is due to the size distribution of the filler. It was found that the optimum amount of sawdust (425-1180 μm) was 15% w/t, with which the increase in fracture toughness was 126% as compared to neat resin and the reduction in cost was 15%. Furthermore, the optimum amount of sawdust (300-425 μm) was also 15% w/t, with which the increase in fracture toughness was 28.3% as compared to neat resin and the reduction in cost was again 15%.

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“…Therefore, as a bridge, silane coupling agents can couple together hydrophilic and hydrophobic materials. Although the treatment is well established with natural fiber composites, its effect on natural fibers has not been extensively studied in natural fiberphenolic foam composites (Colom et al 2003;Pickering et al 2003;Te-fu et al 2005;Towo and Ansell 2008).…”

Section: Introductionmentioning

confidence: 99%

Effects of Fiber Surface Treatments on the Properties of Wood Fiber–Phenolic Foam Composites

Ma¹,

Wang²,

Chu³

2017

BioResources

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Wood fibers were modified with alkaline solution and silane coupling agent to study changes on the fiber surface and the influence of these treatments on the mechanical properties, flame resistance, thermal conductivity, and microstructure of wood fiber-phenolic foam composites. Test results indicated that the lignin, waxes, hemicelluloses, and other impurities from the fiber surface were partially dissolved and removed. The mechanical properties of treated wood fiber-phenolic foam composites increased dramatically, the cellular pore distribution was more regular, the size of bubble cells was smaller and more uniform, and the thermal conductivity was reduced, and, in particular, the fragility of treated wood fiber-phenolic foam composites decreased. However, with increasing wood fiber content, the mechanical properties and limited oxygen index (LOI) of composite foam decreased. By comprehensive analysis, it was shown that the interfacial compatibility between the fibers and phenolic resin was improved. Nevertheless, the amount of wood used could not be too high, and the optimum amount was approximately 5%.

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The effect of silane coupling agents on radiata pine fibre for use in thermoplastic matrix composites

Cited by 151 publications

References 20 publications

The Influence of Chemically Pre-treated Chestnut Waste and Pinecone Filler Content on the Properties of Polyester Composites

The Influence of Chemically Pre-treated Chestnut Waste and Pinecone Filler Content on the Properties of Polyester Composites

Fracture Toughness of Vinyl Ester Composites Reinforced with Sawdust and Postcured in Microwaves

Effects of Fiber Surface Treatments on the Properties of Wood Fiber–Phenolic Foam Composites

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