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Preparation method of reinforced carbon fiber short fiber composite plate

A carbon fiber and composite panel technology, applied in the field of building materials, can solve the problems of poor mechanical properties of reinforced carbon fiber short fiber composite panels, and achieve the effects of easier entanglement, improved mechanical properties, and improved roughness

Pending Publication Date: 2019-10-25
何治华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is: Aiming at the problem of poor mechanical properties of traditional reinforced carbon fiber short fiber composite board, a preparation method of reinforced carbon fiber short fiber composite board is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0026] After mixing the carbon fiber and dopamine solution with a concentration of 4g / L at a mass ratio of 1:8, the air was continuously introduced at a rate of 5mL / min for 20min to obtain a carbon fiber dispersion; the carbon fiber dispersion and 10% chlorine After the ferrous chloride solution is mixed, heat and stir to react, then centrifuge, vacuum freeze-dry, and ball mill to obtain ball abrasive, which is the modified carbon fiber; the carbon fiber is selected from carbon fibers with a length of 10-20 mm and a diameter of 3-8 μm Short fibers: put sepiolite and ferric oxide in a ball mill according to the mass ratio of 20:1 to grind them, pass through a 120-mesh sieve to obtain refined sepiolite, and then place the refined sepiolite in a horse In a Fu furnace, at a temperature of 750°C, roast for 3 hours to obtain pretreated sepiolite. In parts by weight, 40 parts of pretreated sepiolite, 20 parts of silane coupling agent KH-550, 30 parts of Water ethanol, 60 parts of wat...

example 2

[0028] Put the sepiolite and ferric oxide in a ball mill according to the mass ratio of 20:1, grind them, pass through a 120-mesh sieve to obtain fine sepiolite, and then place the fine sepiolite in a muffle furnace , at a temperature of 750°C, roasted for 3 hours to obtain pretreated sepiolite, in parts by weight, 40 parts of pretreated sepiolite, 20 parts of silane coupling agent KH-550, 30 parts of absolute ethanol, Put 60 parts of water in No. 1 beaker, stir and mix for 60 minutes at a speed of 500r / min, then add dropwise hydrochloric acid with a mass fraction of 20% to No. 1 beaker to adjust the pH to 4.0, then place No. 1 beaker in In a magnetic stirrer with digital speed measurement and constant temperature, at a temperature of 80°C and a rotation speed of 600r / min, stir and react at a constant temperature for 2 hours to obtain a mixed slurry, and then filter the mixed slurry to obtain No. 1 filter cake, and then No. 1 filter cake Wash with deionized water for 5 times, ...

example 3

[0030] Put the sepiolite and ferric oxide in a ball mill according to the mass ratio of 20:1, grind them, pass through a 120-mesh sieve to obtain fine sepiolite, and then place the fine sepiolite in a muffle furnace , at a temperature of 750°C, roasted for 3 hours to obtain pretreated sepiolite, in parts by weight, 40 parts of pretreated sepiolite, 20 parts of silane coupling agent KH-550, 30 parts of absolute ethanol, Put 60 parts of water in No. 1 beaker, stir and mix for 60 minutes at a speed of 500r / min, then add dropwise hydrochloric acid with a mass fraction of 20% to No. 1 beaker to adjust the pH to 4.0, then place No. 1 beaker in In a magnetic stirrer with digital speed measurement and constant temperature, at a temperature of 80°C and a rotation speed of 600r / min, stir and react at a constant temperature for 2 hours to obtain a mixed slurry, and then filter the mixed slurry to obtain No. 1 filter cake, and then No. 1 filter cake Wash 5 times with deionized water, then...

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Abstract

The invention discloses a preparation method of a reinforced carbon fiber short fiber composite plate, and belongs to the technical field of building materials. The preparation method comprises the steps that carbon fibers and a sodium hydroxide solution are mixed, soaked, filtered, cryogenically smashed, sieved, washed and dried, and thus pretreated carbon fibers are obtained; the pretreated carbon fiber, secondary sedimentation tank sludge, sucrose and water are mixed and fermented, then a ferric nitrate solution is added dropwise, stirring and mixing are conducted, filtering, drying and carbonization are conducted to obtain modified carbon fibers; in parts by weight, 40-60 parts of epoxy resin, 20-30 parts of a diluent, 15-20 parts of the modified carbon fibers, 5-8 parts of a curing agent, 5-8 parts of plant essential oil, 5-8 parts of thickening resin, and 3-5 parts of a modified addition material are stirred, mixed and subjected to injection molding, compression moulding and demolding, and thus the reinforced carbon fiber short fiber composite plate is obtained. The reinforced carbon fiber short fiber composite plate has the excellent mechanical property.

Description

technical field [0001] The invention discloses a preparation method of a reinforced carbon fiber short fiber composite board, which belongs to the technical field of building materials. Background technique [0002] In order to achieve thermal insulation, traditional refrigerated car panels, luxury car panels, and logistics vehicle panels are usually made of steel structures and polyurethane foam composites. However, due to the high thermal conductivity of steel structures, their thermal insulation effects are not good. The density is high, which increases the energy consumption of the car itself, and corrosion will occur after a long time. Carbon fiber is lighter than metal aluminum, but its strength is higher than that of steel, and it has the characteristics of corrosion resistance and high modulus. It is often used to make plates. It is made of carbon fiber cloth impregnated with epoxy resin glue. It has The characteristic of high tensile strength also improves the comp...

Claims

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Application Information

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IPC IPC(8): C08L63/02C08L63/00C08L93/04C08L57/02C08L45/00C08K13/06C08K9/04C08K9/02C08K7/06C08K9/06C08K7/10C08J5/06
CPCC08J5/06C08J2363/00C08J2363/02C08J2445/00C08J2457/02C08J2493/04C08K7/06C08K7/10C08K9/02C08K9/04C08K9/06C08K13/06
Inventor 何治华
Owner 何治华
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