Improving adhesion of wood fiber with polystyrene by the chemical treatment of fiber with a coupling agent and the influence on the mechanical properties of composites

1989 ◽  
Vol 3 (1) ◽  
pp. 529-539 ◽  
Author(s):  
D. Maldas ◽  
B.V. Kokta
Keyword(s):  
Mechanical Properties ◽  
Coupling Agent ◽  
Chemical Treatment ◽  
Wood Fiber ◽  
Properties Of Composites

Study on Mechanical Properties of Wood Fiber/Polypropylene Composites

2010 ◽  
Vol 123-125 ◽  
pp. 1195-1198 ◽  
Author(s):  
Alireza Ashori
Keyword(s):  
Mechanical Properties ◽  
Flexural Strength ◽  
Sample Preparation ◽  
Coupling Agent ◽  
Wood Fiber ◽  
Wood Fibers ◽  
Polypropylene Composites ◽  
Fiber Loading ◽  
Four Levels ◽  
Properties Of Composites

In this study, the effect of wood fiber concentrations on the mechanical properties of composites, prepared by using MAPP as the coupling agent, was investigated. In the sample preparation, four levels of fiber loading and three compounding temperatures were used. Most major changes in composite performance occurred at fiber contents above 30 wt%.The results clearly showed that the fiber loading of 30 and 40 wt% at 190oC was provided adequate reinforcement to increase the tensile and flexural strength of the PP powder. The modulus also increased with increasing the fiber content, because poplar fibers are believed to be more rigid than polymer. However, the addition of wood fibers resulted in a decrease in elongation and impact properties of the composites.

Study on the Application of Silane Coupling Agent in Rice Straw/Poly(butylene Succinate) Composites

2011 ◽  
Vol 675-677 ◽  
pp. 361-364 ◽  
Author(s):  
Yang Zhao ◽  
Jian Hui Qiu ◽  
Hui Xia Feng ◽  
Guo Hong Zhang ◽  
Liang Shao
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Rice Straw ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Fracture Strain ◽  
Molding Machine ◽  
Butylene Succinate ◽  
Silane Coupling ◽  
Properties Of Composites

Rice straw/Poly(butylene succinate)(PBS) composites were prepared by injection molding machine. The influence of content and particle size of rice straw on the mechanical properties of composites indicated that with the increase of rice straw content the tensile strength and fracture strain of the composites was decreased. With the same content of rice straw, the smaller particle size, the more obvious decreased. The influence of dosage of silane coupling agent(SCA) on the composites was studied, the result indicated that with the increase of SCA content, the interface of composite materials significantly improved, the Young’s modulus increased 362% after rice straw was treated by SCA. Thermal analysis showed that the adding of coupling agent didn’t undermine the thermodynamic stability of the composites.

Effect of a Novel Coupling Agent, Polybutadiene Isocyanate, on Mechanical Properties of Wood-Fiber Polypropylene Composites

2008 ◽  
Vol 27 (16-17) ◽  
pp. 1679-1687 ◽  
Author(s):  
Amir Nourbakhsh ◽  
Bouhuslav V. Kokta ◽  
Alireza Ashori ◽  
Ahmad Jahan-Latibari
Keyword(s):  
Mechanical Properties ◽  
Coupling Agent ◽  
Wood Fiber ◽  
Polypropylene Composites

Effects of Wood Powder on Mechanical Properties of PP/Wood Powder Composites

2011 ◽  
Vol 194-196 ◽  
pp. 1536-1541
Author(s):  
Cheng Bing Yu ◽  
Yin Yu Rui ◽  
Sai Sai Chen ◽  
Xia Lv ◽  
Xi Lin Lv
Keyword(s):  
Mechanical Properties ◽  
Coupling Agent ◽  
Impact Testing ◽  
Twin Screw Extruder ◽  
Wood Powder ◽  
Screw Extruder ◽  
Twin Screw ◽  
Interfacial Compatibility ◽  
Powder Composites ◽  
Properties Of Composites

Effects of wood powder (WP) on mechanical properties of PP/WP composites were studied, and interfacial compatibility between polypropylene (PP) and WP was investigated with SEM. All PP/WP composites were compounded in a parallel twin-screw extruder. Mechanical properties of composites were characterized by tensile, hardness, and impact testing. The result showed that interfacial compatibility in PP/WP composite was ameliorated efficiently by PP-g-(MAH-St) compatilizer, mechanical properties of PP/WP composites were improved by pre-treating WP with alkali and coupling agent. They were also influenced by WP size and WP amount, which were the best at the size of 60-mesh and the amount of 40 wt%.

Effects of Different Pretreatments of Wood Fiber on Mechanical Properties of Biodegradable Composite

2010 ◽  
Vol 150-151 ◽  
pp. 1438-1443
Author(s):  
Yi Qiang Wu ◽  
Zhi Yong Qin ◽  
Yan Qing ◽  
Xin Gong Li
Keyword(s):  
Mechanical Properties ◽  
Stearic Acid ◽  
Polylactic Acid ◽  
Coupling Agent ◽  
Composite System ◽  
Alkali Treatment ◽  
Wood Fiber ◽  
Biodegradable Composite ◽  
The Impact ◽  
Agent Treatment

Biodegradable composites of polylactic acid reinforced with wood fiber were fabricated by using twin screw extruder followed by the injection molding machine. The effects of different pretreatments of wood on mechanical properties of the biodegradable composite were discussed. The nature of composites were also examined through scanning electron microscope and Infrared Spectrum Analysis, the results reveal that both acid and stearic acid could be used as effective surface modifier for wood fiber/polylactic acid system, the composite system by adding Benzoic acid, the tensile strength has improved greatly, and about stearic acid composite system, the impact strength has improved significantly; After alkali treatment, coupling agent treatment and combination of alkali treatment and coupling agent treatment, and the use of alkali treatment and the coupling agent treatment is the best, follow by alkali treatment.

Effect of Modification of Coal Powder Using Silane Coupling Agent on Mechanical Properties of SBS

2012 ◽  
Vol 538-541 ◽  
pp. 2246-2250 ◽  
Author(s):  
Guo Jun Cheng ◽  
Xiu Hua Yu ◽  
Zhong Feng Tang
Keyword(s):  
Mechanical Properties ◽  
Coupling Agent ◽  
Measuring Instrument ◽  
Angle Measuring ◽  
Coal Powder ◽  
Silane Coupling ◽  
Powder Particles ◽  
Physical And Chemical ◽  
Butadiene Styrene ◽  
Properties Of Composites

Coupling agent γ-methacryloxypropyltrimethoxysilane（KH-570） was used as modifier to improve the superficial capacity of coal powder. Modified coal powder/thermoplastic butadiene-styrene rubber (SBS) composites were prepared by mixing procedure. The modified and unmodified coal powder and mechanical properties of composites were characterized and analyzed by Fourier Transform Infrared Spectroscopy (FTIR), thermogravimetric analysis (TGA), contact angle measuring instrument(CAMI), sedimentation test, rubber process analyzer (RPA) and scanning electron microscopy (SEM). Results showed that KH-570 can form chemical union with coal powder. The agglomeration of coal powder particles was effectively restricted after surface modification. The modified coal powder particles can be dispersed equally in rubber and form physical and chemical crosslinking structure with rubber.

Effect of Modified Diatomite on Crystallinity and Mechanical Properties of Polypropylene

2018 ◽  
Vol 913 ◽  
pp. 551-557 ◽  
Author(s):  
Yu Zhao ◽  
Ming Du ◽  
Ke Xin Zhang ◽  
Liang Gao
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Coupling Agent ◽  
Acid Ester ◽  
Coupling Agents ◽  
Polypropylene Composite ◽  
Polypropylene Composites ◽  
Different Content ◽  
Better Than ◽  
Properties Of 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.

Study on Old Newspaper Recycling Fiber-Reinforced PLA Composites

2011 ◽  
Vol 183-185 ◽  
pp. 2227-2231
Author(s):  
Xin Gong Li ◽  
Hui Li ◽  
Fang Cheng ◽  
Zhuo Tong
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Injection Molding ◽  
Polylactic Acid ◽  
Coupling Agent ◽  
Fiber Reinforced ◽  
Properties Of Composites

In the research, old newspaper recycling fiber-reinforced polylactic acid composites were produced by using injection molding technology. The influences of MAPP coupling agent and newspaper alkali deinking treatment on the performance of composite materials were studied. The results showed: MAPP can effectively improve the compatibility of old newspaper recycling fibers and PLA and increase the mechanical properties of composites; the alkali deinking treatment can effective improve the adhesion of newspaper recycling fibers and PLA and increase the mechanical properties of composites.

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