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Carbon tube masterbatch and its application in tire tread

A tire tread and masterbatch technology, applied in special tires, tire parts, transportation and packaging, etc., can solve the problems of restricting the large-scale application of carbon nanotubes, poor affinity of polymer matrix, and poor dispersion of carbon nanotubes , to achieve the effect of improving the braking distance, good antistatic performance and high production efficiency

Active Publication Date: 2018-10-09
新疆轮匠碳中和产业园有限公司
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Problems solved by technology

[0003] However, carbon nanotubes are in the form of nanofibers, which are easily agglomerated and entangled, and the surface of carbon nanotubes is a regular graphite wafer structure, which has a large surface inertia and poor affinity with the polymer matrix, resulting in carbon nanotubes in the rubber matrix. The dispersion of carbon nanotubes is poor and the cost is high, which limits the large-scale application of carbon nanotubes in tire treads

Method used

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  • Carbon tube masterbatch and its application in tire tread
  • Carbon tube masterbatch and its application in tire tread

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Embodiment 1-4

[0016] Preparation of embodiment 1-4 carbon tube masterbatch and its application in tire tread

[0017] Step 1, the dispersion of carbon nanotubes (such as figure 1 shown): First, the carbon nanotubes are added to the rubber polymer melt and stirred to form a carbon nanotube slurry, and then injected into a grinding device with a line-contact double ceramic grinding disc through a material pump for grinding, and the two ceramic grinding discs turn in opposite directions , the speed is controlled at 4800rpm, so that the carbon nanotubes are uniformly dispersed in the polymer, and the carbon nanotubes are cut off under the action of mechanical friction and interlayer shear force in the polymer melt, and the polymer is removed to obtain a length of 50nm~ 5 μm short carbon nanotubes;

[0018] Step 2, mixing together the rubber masterbatch (the composition is rubber), carbon black (using pyrolysis carbon black), and the short carbon nanotubes obtained in step 1, and performing ban...

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Abstract

The invention relates to a carbon tube masterbatch and an application thereof to tire treads. The carbon tube masterbatch is prepared through the following steps: firstly adding carbon nanotubes to a polymer melt and stirring the carbon nanotubes to form carbon nanotube slurry, then injecting the carbon nanotube slurry into a grinding device with double line contact ceramic grinding tables by a feed pump to be ground, uniformly dispersing the carbon nanotubes in the polymer as the two ceramic grinding tables rotate oppositely, cutting off the carbon nanotubes under the actions of mechanical friction and the interlaminar shear force in the polymer melt and removing the polymer, thus obtaining short carbon nanotubes; and mixing rubber masterbatch, carbon black and the short carbon nanotubes together and carrying out internal mixing processing on the mixture in an internal mixer, thus obtaining the carbon tube masterbatch. The carbon tube masterbatch provided by the invention is applicable to the tire treads and has the effects of not only reducing the production cost of tires but also improving the wear resistance of the tires.

Description

technical field [0001] The invention belongs to the technical field of tire tread modification, and in particular relates to a carbon tube masterbatch and its application in tire treads. Background technique [0002] Carbon nanotubes have excellent mechanical properties, electrical conductivity, and thermal conductivity, so they are considered to be ideal mechanical strengthening and functional modification materials for polymer matrix composites. Composite materials made of carbon nanotubes exhibit good strength, elasticity and fatigue resistance. Carbon nanotubes have also begun to be gradually used in industries such as rubber tires and plastics. [0003] However, carbon nanotubes are in the form of nanofibers, which are easily agglomerated and entangled, and the surface of carbon nanotubes is a regular graphite wafer structure, with high surface inertia and poor affinity with the polymer matrix, resulting in carbon nanotubes being in the rubber matrix. The poor dispersi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K7/24C08K3/04C08L21/00C08L7/00C08L9/00C08K13/04C08K3/22C08K3/06C08J3/22B60C1/00
CPCB60C1/0016C08J3/226C08J2307/00C08J2421/00C08K3/04C08K7/24C08K2201/004C08K2201/011C08L7/00C08L2205/03C08L21/00C08L9/00C08K13/04C08K2003/2296C08K3/06
Inventor 徐俊士谢青
Owner 新疆轮匠碳中和产业园有限公司
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