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Preparation method of surface processed carbon fiber and enhanced nylon 66 composite material applying same
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A technology of surface treatment and composite materials, which is applied in the fields of carbon fiber, fiber treatment, textiles and paper making, and can solve problems such as low mechanical strength and poor interface bonding
Inactive Publication Date: 2010-09-15
ZHONGSHAN DIANSHI PLASTIC
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The study found that the mechanical strength of carbon fiber reinforced composites without surface treatment is low. The reason is that the surface of untreated carbon fiber is inert and has poor interface bonding with the resin matrix. Therefore, surface treatment of carbon fiber is required to increase carbon fiber and matrix. Reactivity, further improving the comprehensive performance index of composite materials
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Embodiment 1
[0026] 1), prepare materials according to the carbon fiber ratio of 13%, 82.6kg nylon 66, 0.2kg light stabilizer, 0.2kg heat stabilizer, 4kg nanoclay, 13kg carbon fiber;
[0027] 2) Put nylon 66 into a drying oven and dry at 110°C for 3 hours;
[0028] 3) Stir and mix nylon 66, light stabilizer, heat stabilizer and nanoclay evenly.
[0029] 4) Oxidation treatment on the surface of carbon fiber: Put the carbon fiber in a crucible and heat it to 450 degrees and keep it at a constant temperature for one hour, then cool it with the furnace.
[0030] 5), the mixed material of step 3) is added to the twin-screw extruder from the feed port, and the carbon fiber oxidized in step 4) is added to the twin-screw extruder from the side feed port, and the twin-screw extruder is from the feed port to the The temperature range of each section of the machine head: 1 section 240-245°C; 2 sections 245-255°C; 3 sections 245-255°C; 4 sections 255-265°C; 5 sections 255-265°C; The 7th stage is 265...
Embodiment 2
[0035] Only change batching amount, all the other are the same as embodiment 1, be 20% raw materials by carbon fiber ratio, 75.6kg nylon 66, 0.2kg light stabilizer, 0.2kg heat stabilizer, 4kg nanoclay, 20kg carbon fiber.
Embodiment 3
[0037] Only change batching amount, all the other are the same as embodiment 1, be 30% raw material preparation by carbon fiber ratio, 65.6kg nylon 66, 0.2kg light stabilizer, 0.2kg thermal stabilizer, 4kg nanoclay, 30kg carbon fiber.
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Abstract
The invention relates to the field of high polymer materials. The invention provides a preparation method of a surface processed carbon fiber, which comprises the following steps of: putting the carbon fiber into a crucible for heating to the temperature of 300-500 DEG C, keeping for 40-80 minutes at constant temperature and then carrying out furnace cooling. The carbon fiber processed by the method has increased surface oxygen-contained functional groups and enhanced surface activity.
Description
technical field [0001] The invention relates to the field of polymer materials, in particular to a method for preparing surface-treated carbon fibers and a nylon 66 composite material reinforced by the same. Background technique [0002] Carbon fiber has the characteristics of high specific strength, wear resistance, fatigue resistance, small thermal expansion coefficient and excellent self-lubrication performance, so carbon fiber has become one of the most important reinforcement materials in recent years, among which carbon fiber reinforced resin matrixcomposite material is its main form of application . The study found that the mechanical strength of carbon fiber reinforced composites without surface treatment is low. The reason is that the surface of untreated carbon fiber is inert and has poor interface bonding with the resin matrix. Therefore, surface treatment of carbon fiber is required to increase carbon fiber and matrix. The reactivity further improves the compre...
Claims
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Application Information
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