Influence of surface treatments and coupling agents on the thermal and thermo‐mechanical properties of yerba mate/post‐consumer polypropylene composites

The different coupling agent is used for diatomite modification. The diatomite with different content are melt and mixed with polypropylene to prepare diatomite/polypropylene composites. The modification effects of different coupling agent on diatomite and the influence of agent and diatomite contents on crystallization behavior of polypropylene and mechanical properties of composites are investigated. The results show that different coupling agents have the modification effects on diatomite influence crystallization of polypropylene but the aluminum agent is better than other agents. With the increase of the content of aluminum acid ester coupling agent, the size of bubble pore is uniform, and then the compressive strength reaches to a maximum when aluminum acid ester coupling agent content is 1%. With the increase of the content of diatomite, the porosity of bubble pore of diatomite/polypropylene composite material is gradually increases. The crystallinity of polypropylene and yield strength reach to a maximum (48.15% and 21.5%) when diatomite content is 30%. In addition, the diatomite/polypropylene composites have better compressive strength than the others.

Download Full-text

Effect of Melt Temperature and Holding Time on Mechanical Properties of Polypropylene Composites Bottom Ash Reinforced

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/988/1/012117 ◽

2020 ◽

Vol 988 ◽

pp. 012117

Author(s):

I Made Kastiawan ◽

I Nyoman Sutantra ◽

Sutikno

Keyword(s):

Mechanical Properties ◽

Bottom Ash ◽

Holding Time ◽

Melt Temperature ◽

Polypropylene Composites

Download Full-text

Improving the mechanical properties of polypropylene composites with coconut shell particles

Composites and Advanced Materials ◽

10.1177/26349833211007497 ◽

2021 ◽

Vol 30 ◽

pp. 263498332110074

Author(s):

Henry C Obasi ◽

Uchechi C Mark ◽

Udochukwu Mark

Keyword(s):

Mechanical Properties ◽

Particle Size ◽

Flexural Modulus ◽

Filler Particle ◽

Tensile Modulus ◽

Coconut Shell ◽

Polypropylene Composites ◽

Increase With Increase ◽

Pp Composites ◽

Shell Particles

Conventional inorganic fillers are widely used as fillers for polymer-based composites. Though, their processing difficulties and cost have demanded the quest for credible alternatives of organic origin like coconut shell fillers. Dried shells of coconut were burnt, ground, and sifted to sizes of 63, 150, 300, and 425 µm. The ground coconut shell particles (CSP) were used as a filler to prepare polypropylene (PP) composites at filler contents of 0% to 40% via injection melt blending process to produce PP composite sheets. The effect of the filler particle size on the mechanical properties was investigated. The decrease in the size of filler (CSP) was found to improve the yield strength, tensile strength, tensile modulus, flexural strength, flexural modulus, and hardness of PP by 8.5 MPa, 15.75 MPa, 1.72 GPa, 7.5 MPa, 100 MPa, and 10.5 HR for 63 µm at 40%, respectively. However, the elongation at break and modulus of resilience of the PP composites were seen to increase with increase in the filler size. Scanning electron microscope analysis showed that fillers with 63 µm particle size had the best distribution and interaction with the PP matrix resulting in enhanced properties.

Download Full-text

Crystallization and Mechanical Properties of Glass Fiber Reinforced Polypropylene Composites Molded by Rapid Heat Cycle Molding

Fibers and Polymers ◽

10.1007/s12221-020-1284-8 ◽

2020 ◽

Vol 21 (12) ◽

pp. 2915-2926

Author(s):

Aimin Zhang ◽

Guoqun Zhao ◽

Jialong Chai ◽

Junji Hou ◽

Chunxia Yang ◽

...

Keyword(s):

Mechanical Properties ◽

Glass Fiber ◽

Fiber Reinforced ◽

Heat Cycle ◽

Polypropylene Composites ◽

Glass Fiber Reinforced

Download Full-text

Investigation of the Mechanical Properties of Bagasse Flour/Polypropylene Composites

Mechanics of Composite Materials ◽

10.1007/s11029-013-9361-3 ◽

2013 ◽

Vol 49 (4) ◽

pp. 447-454 ◽

Cited By ~ 8

Author(s):

A. Samariha ◽

A. Bastani ◽

M. Nemati ◽

M. Kiaei ◽

H. Nosrati ◽

...

Keyword(s):

Mechanical Properties ◽

Polypropylene Composites ◽

Bagasse Flour

Download Full-text

Improvement of Mechanical Properties of Noil Hemp Fiber Reinforced Polypropylene Composites by Resin Modification and Fiber Treatment

Advances in Materials Science and Engineering ◽

10.1155/2013/941617 ◽

2013 ◽

Vol 2013 ◽

pp. 1-7 ◽

Cited By ~ 1

Author(s):

Zili Yan ◽

Jianchun Zhang ◽

Hua Zhang ◽

Hao Wang

Keyword(s):

Mechanical Properties ◽

Mechanical Analysis ◽

Interfacial Bonding ◽

Hydroxyethyl Cellulose ◽

Hemp Fiber ◽

Polypropylene Composites ◽

Hydrophobically Modified ◽

Fiber Treatment ◽

Fibre Treatment ◽

Adhesion Factor

The present study aims to improve the reinforcement of hemp fibre to polypropylene (PP) by simple resin modification and fibre treatment. Maleic anhydride grafted polypropylene (MAPP) was used as resin modifier by direct mixing with PP, and hydrophobically modified hydroxyethyl cellulose (HMHEC) was used as fibre treatment reagent by immersing fibre into its aqueous solution. The influences of fibre content, resin modification, and fibre treatment on the mechanical properties (tensile, flexural, and impact strengths) of composites were investigated. The change of interfacial bonding between fibre and resin in composites caused by MAPP and HMHEC was studied by scanning electron microscopy and dynamic mechanical analysis. Resin modification and fibre treatment were effective to enhance the mechanical properties of the composites. The improvement in interfacial bonding is quantitatively evaluated with adhesion factor.

Download Full-text