Cyclopentadiene-modified carbon nanotube/rubber composite material and preparation method thereof
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A technology of cyclopentadiene and composite materials, applied in the field of nano-material modified rubber, which can solve the problems of reduced mechanical properties and limited applications of rubber products, and achieve the effects of strong interaction, excellent electrical conductivity and high dispersion
Active Publication Date: 2015-05-27
SHANDONG DAZHAN NANO MATERIALS
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[0003] However, due to the unique characteristics of nanomaterials such as the strong surface effect of carbon nanotubes, it is very easy to agglomerate and entangle among carbon nanotubes, and form knots visible to the naked eye in the rubber, which will cause mechanical properties of rubber products to deteriorate. Significantly lower, thus severely limiting its application in the rubber industry
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Embodiment 1
[0040] Add 20 parts of multi-walled carbon nanotubes into a pressure-resistant glass reactor, add 20 parts of dicyclopentadiene, seal the reactor, heat the oil bath to 150°C for 20 hours, cool to room temperature after the reaction, and wash the reaction mixture with toluene Washing with methanol, filtering, and vacuum-drying the filter cake at 60° C. for 12 hours to obtain cyclopentadiene-modified carbon nanotubes with vinyl functional groups on the surface;
[0041] The above-mentioned cyclopentadiene modified carbon nanotubes were mixed with 100 parts of masticated natural rubber, 1 part of accelerator NS, 5 parts of zinc oxide, 2 parts of stearic acid, 1 part of anti-aging agent 4010NA, 0.5 part of N,N'-methylene Phenylbismaleimide, 5 parts of carbon black N330, 5 parts of calcium carbonate, 3 parts of environmentally friendly aromatic hydrocarbon oil, 0.5 part of zinc soap salt, mixed evenly in an internal mixer, degumming at 140°C, and adding open Cover the rollers in th...
Embodiment 2
[0048] 20 parts of multi-walled carbon nanotubes were weighed and added to a pressure-resistant glass reactor, and then 10 parts of dicyclopentadiene was added, the reactor was sealed, and the temperature was raised to 200° C. for 6 hours. After the reaction, cool to room temperature, wash the reaction mixture with toluene and methanol respectively, filter, and vacuum-dry the filter cake at 50° C. for 14 hours to obtain cyclopentadiene-modified carbon nanotubes with vinyl functional groups on the surface;
[0049] Add 5 parts of zinc oxide, 1 part of anti-aging agent 4010NA, 1 part of isocyanurate, 10 parts of carbon black N330 to the above-mentioned cyclopentadiene modified carbon nanotubes and 100 parts of EPDM rubber , 10 parts of calcium carbonate, 8 parts of naphthenic oil, and 0.5 parts of zinc soap salt were mixed evenly, degummed at 140 ° C, cooled, added to the open mill to cover the rolls, added 3 parts of dicumyl peroxide, mixed evenly, and then After standing for 1...
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Abstract
The invention belongs to the technical field of nano-material modified rubber and relates to a preparation method of a cyclopentadiene-modified carbon nanotube/rubber composite material. The preparation method utilizes cyclopentadiene to modify the surfaces of carbon nanotubes and comprises the following steps of adding cyclopentadiene or dicyclopentadiene and carbon nanotubes into a pressure-resistant reactor according to a weight ratio of (0.5-1): 1, carrying out heating to a temperature of 150-200 DEG C in an oil bath, wherein the pressure is naturally improved to 0.1-0.5MPa, carrying out a reaction process for 8-20h, cooling the reaction product to a room temperature, respectively washing the mixed reaction products by methylbenzene and methanol, carrying out filtration, carrying out vacuum drying on the filter cake at a temperature of 50-70 DEG C for 10-14h to obtain cyclopentadiene-modified carbon nanotubes of which the surfaces with vinyl functional groups, and mixing the cyclopentadiene-modified carbon nanotubes of which the surfaces with vinyl functional groups and rubber. The cyclopentadiene-modified carbon nanotube/rubber composite material has strong interaction of the composite material rubber and carbon nanotubes, has good workability (wherein rubber mixing time is shortened by 10-20%), has high dispersity, high thermal conductivity (improved by 20% or more) and excellent electrical conductivity (improved by 4-5 order of magnitude) and satisfies present industrialization requirements.
Description
technical field [0001] The invention belongs to the technical field of nano-material modified rubber, and in particular relates to a preparation method of a cyclopentadiene-modified carbon nanotube / rubber composite material. Background technique [0002] Carbon nanotubes have excellent physical and mechanical properties, Young's modulus is about 1.8TPa; tensile strength is about 200GPa, which is 100 times stronger than steel, but its weight is only 1 / 6 to 1 / 7 of the latter. At the same time, the elastic strain of carbon nanotubes can reach up to about 12%, which has good flexibility like a spring. The electrical conductivity of carbon nanotubes can reach 10,000 times that of copper, and the thermal conductivity is also very good. [0003] However, due to the unique characteristics of nanomaterials such as the strong surface effect of carbon nanotubes, it is very easy to agglomerate and entangle among carbon nanotubes, and form knots visible to the naked eye in the rubber, w...
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