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Carbon-fiber-reinforced polyethylene composite material
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A composite material and carbon fiber technology, which is applied in the field of composite materials to achieve the effects of good toughness, improved environmental stress resistance and good impact resistance
Inactive Publication Date: 2011-11-16
SHANGHAI BANGZHONG NEW MATERIAL
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Problems solved by technology
[0005] Aiming at the technical problems of existing polyethylene composite materials, the present invention provides a novel carbon fiber reinforced polyethylene composite material and its preparation method
Method used
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Embodiment 1
[0018] A carbon fiber reinforced polyethylene composite material, which consists of the following components (parts by weight):
[0019]
[0020] The preparation method is as follows: firstly, the ingredients are mixed according to the content of each component, and then high-density polyethylene, low-density polyethylene, maleic anhydride grafted polyethylene and carbon fiber are added to the double-roller plastic mixer, and the coupling is added during the mixing process. agents and plasticizers. The kneading temperature is 220° C., and the kneading time is 12 minutes; the kneaded material is molded to obtain a carbon fiber-reinforced polyethylene composite material.
Embodiment 2
[0022] A carbon fiber reinforced polyethylene composite material, which consists of the following components (parts by weight):
[0023]
[0024] The preparation method is as follows: firstly, the ingredients are mixed according to the content of each component, and then high-density polyethylene, low-density polyethylene, maleic anhydride grafted polyethylene and carbon fiber are added to the double-roller plastic mixer, and the coupling is added during the mixing process. agents and plasticizers. The kneading temperature is 250° C., and the kneading time is 20 minutes; the kneaded material is molded to obtain a carbon fiber reinforced polyethylene composite material.
Embodiment 3
[0026] A carbon fiber reinforced polyethylene composite material, which consists of the following components (parts by weight):
[0027]
[0028] The preparation method is as follows: firstly, the ingredients are mixed according to the content of each component, and then high-density polyethylene, low-density polyethylene, maleic anhydride grafted polyethylene and carbon fiber are added to the double-roller plastic mixer, and the coupling is added during the mixing process. agents and plasticizers. The kneading temperature is 230° C., and the kneading time is 15 minutes; the kneaded material is molded to obtain a carbon fiber-reinforced polyethylene composite material.
[0029] The carbon fibers in the above three embodiments are all modified in advance: reflux the carbon fibers with a 1:1 acetone-ethanol solution for 15 hours, remove the epoxy resin on the surface of the carbon fibers, dry at 80°C to remove the solvent, and then impregnate maleic anhydride The monomer is ...
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Abstract
The invention belongs to the technical field of composite materials and particularly relates to a carbon-fiber-reinforced polyethylene composite material and a preparation method thereof. The composite material provided by the invention is characterized by comprising the following components in parts by weight: 80-100 parts of high-density polyethylene, 10-20 parts of low-density polyethylene, 15-20 parts of carbon fiber, 5-15 parts of coupling agent and 0.5-1 part of plasticizer, wherein the carbon fiber is treated through plasma graft modification. The preparation method provided by the invention comprises: firstly adding high-density polyethylene, low-density polyethylene, maleic-anhydride-grafted polyethylene and carbon fiber to a double-roller plastic milling machine, and adding the coupling agent and the plasticizer during the mixing process while maintaining the mixing temperature at 200-250 DEG C and mixing time for 10-20 minutes; and performing press-molding on the mixed material to obtain a product. The carbon-fiber-reinforced polyethylene composite material prepared in the invention has excellent performance and can be widely applied in medical appliances, civil construction, electric engineering, petrochemical, automobiles, metallurgy and other industries.
Description
technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a carbon fiber reinforced polyethylene composite material and a preparation method thereof. Background technique [0002] Carbon fiber and its composite materials have a series of excellent properties such as high specific strength, high specific modulus, high temperature resistance, corrosion resistance, fatigue resistance, creep resistance, electrical conductivity, heat transfer and small thermal expansion coefficient, so they can be used as both structural materials and Used as a functional material. [0003] As the reinforcing fiber of composite materials, carbon fiber has broad prospects and is widely used in various fields of national economy. Due to the smooth surface of carbon fiber, few active functional groups, low surface energy, surface chemical inertness, and poor wettability with the resin matrix, the interface adhesion of the composite mate...
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Application Information
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