A study of viscoelastic properties of graphite（GP） filled high density polyethylene composites was carried out.The Mooney equation was modified to evaluate the formation and development of agglomerate structure for ...A study of viscoelastic properties of graphite（GP） filled high density polyethylene composites was carried out.The Mooney equation was modified to evaluate the formation and development of agglomerate structure for high filled suspension system.The apparent filler concentration（φ） was substituted by the effective volume fraction,φeff.It is believed that in the case of high filler concentrations the viscoelastic properties of the composites are mainly related with φeff.Here,we define φeff=fφ,in which f（f≥1） is the experiential factor of effective volume,corresponding to the microstructure with different relaxation time in HDPE/GP system.In the low φ region,the viscoelastic properties of the composites can be described by the original Mooney equation,while the viscoelastic properties of the high loading composites can be described by the modified Mooney equation considering the effective filler volume in the case of ω=0.1 rad/s,experientially postulate f=1.55.展开更多
The influence of mixed rubber processing technology on Mooney viscosity and burning time was studied.The results showed that the Mooney viscosity of mixed rubber increased with the extension of the parking time,and th...The influence of mixed rubber processing technology on Mooney viscosity and burning time was studied.The results showed that the Mooney viscosity of mixed rubber increased with the extension of the parking time,and the burning time did not change significantly.With the increase of the number of thin pass,the Mooney viscosity of mixed rubber decreases continuously,and the burning time varies with different thin pass temperature.展开更多
文摘A study of viscoelastic properties of graphite（GP） filled high density polyethylene composites was carried out.The Mooney equation was modified to evaluate the formation and development of agglomerate structure for high filled suspension system.The apparent filler concentration（φ） was substituted by the effective volume fraction,φeff.It is believed that in the case of high filler concentrations the viscoelastic properties of the composites are mainly related with φeff.Here,we define φeff=fφ,in which f（f≥1） is the experiential factor of effective volume,corresponding to the microstructure with different relaxation time in HDPE/GP system.In the low φ region,the viscoelastic properties of the composites can be described by the original Mooney equation,while the viscoelastic properties of the high loading composites can be described by the modified Mooney equation considering the effective filler volume in the case of ω=0.1 rad/s,experientially postulate f=1.55.
文摘The influence of mixed rubber processing technology on Mooney viscosity and burning time was studied.The results showed that the Mooney viscosity of mixed rubber increased with the extension of the parking time,and the burning time did not change significantly.With the increase of the number of thin pass,the Mooney viscosity of mixed rubber decreases continuously,and the burning time varies with different thin pass temperature.
