Preparation method of composite electroconductive plastic

Abstract

The invention relates to a preparation method of a composite electroconductive plastic, and belongs to the technical field of plastic. The preparation method comprises following steps: Arabic gum, green bamboo, and copper powder are subjected to ball milling so as to obtain a colloid powder mixture; the colloid powder mixture is delivered into a die for pressing, pressure maintaining, demoulding,and thermocuring are carried out, and an obtained product is cooled to room temperature so as to obtain a cured material; the cured material is delivered into a tubular type atmosphere furnace, nitrogen is introduced, and heat preservation carbonization is carried out so as to obtain a carbonization mixture; the carbonization mixture is subjected to ball milling and sieving so as to obtain carbonized particles; phenol, formaldehyde, graphite, and oxalic acid are delivered into a flask at a mass ratio, the temperature is adjusted, stirring, heating, backflow treatment under boiling states, andvacuum drying are carried out so as to obtain a graphite modified phenolic resin; acrylonitrile-butadiene-styrene, the graphite modified phenolic resin, the carbonized particles, and a dispersant aredelivered into an open mill, the temperature is adjusted, and stirring is carried out so as to obtain a stirring material; the stirring material is delivered into a mould, and demoulding is carried out so as to obtain the composite electroconductive plastic.

Description

technical field

[0001] The invention relates to a preparation method of composite conductive plastic, which belongs to the technical field of plastic industry. Background technique

[0002] Plastic itself is a good insulator, and the volume resistivity of most plastics exceeds 10 15 Ω.cm, even up to 10 20 Ω.cm. Its excellent insulation properties make plastics widely used in electrical and electronic, mechanical, chemical and other industries. Wire and cable sheaths, electric tool casings, and electrical equipment casings all give full play to the insulating properties of plastics. However, the good insulating properties of plastics also limit its application in certain industries.

[0003] The insulation of plastics prevents the electrostatic charge accumulated on the surface of plastic products from being released, and then forms an electrostatic voltage, which is easy to absorb dirt such as dust. When the electrostatic voltage reaches a certain level, electrostatic dis...

Examples

Example Embodiment

[0027] Example 1

[0028] In parts by weight, take 1 part of gum arabic, 8 parts of green bamboo and 0.5 part of 200 mesh copper powder, put the green bamboo, gum arabic and copper powder together in a ball milling tank, ball mill at 200r / min for 2h to obtain colloid Powder mixture; fill the prepared colloidal powder mixture into a block mold, press it at 5MPa at room temperature, hold the pressure for 2 minutes, demold and place it in an oven at 80°C, after heat curing for 1 hour, stand and cool to The solidified material is obtained at room temperature; the solidified material is placed in a tubular atmosphere furnace, nitrogen is introduced, the flow of nitrogen is controlled to be 45mL / min, the temperature is controlled at 600 ℃ in a nitrogen atmosphere, and the temperature is kept for 2 hours to obtain a carbonized mixture; The mixture is placed in a ball milling tank, ball milled at a speed of 300r / min for 3 hours and passed through a 300 mesh sieve to obtain carbonized par...

Example Embodiment

[0029] Example 2

[0030] In parts by weight, take 2 parts of gum arabic, 9 parts of green bamboo and 1.0 part of 200 mesh copper powder, put the green bamboo, gum arabic and copper powder together in a ball milling tank, ball mill at 220r / min for 2h to obtain colloid Powder mixture; fill the prepared colloidal powder mixture into a block mold, press it at 8MPa at room temperature, hold the pressure for 2 minutes, demold and place it in an oven at 90°C, after heat curing for 1 hour, stand and cool to At room temperature, the solidified material is obtained; the solidified material is placed in a tubular atmosphere furnace, nitrogen is introduced, the flow of nitrogen is controlled to 48mL / min, the temperature is controlled at 650℃ in a nitrogen atmosphere, and the temperature is kept for 2 hours to obtain a carbonized mixture; The mixture is placed in a ball milling tank, ball milled at a speed of 350r / min for 3 hours and passed through a 300 mesh sieve to obtain carbonized parti...

Example Embodiment

[0031] Example 3

[0032] In parts by weight, take 3 parts of gum arabic, 10 parts of green bamboo and 1.5 parts of 200 mesh copper powder, put the green bamboo, gum arabic and copper powder together in a ball milling tank, ball mill at 250r / min for 3 hours to obtain colloid Powder mixture; fill the prepared colloidal powder mixture into a block mold, press it at 10MPa at room temperature, hold the pressure for 3 minutes, demold and place it in an oven at 100°C, after heat curing for 2 hours, stand and cool to The solidified material is obtained at room temperature; the solidified material is placed in a tubular atmosphere furnace, nitrogen is introduced, the flow of nitrogen is controlled to 50mL / min, the temperature is controlled at 700 ℃ in a nitrogen atmosphere, and the temperature is kept for 3 hours to obtain a carbonized mixture; The mixture is placed in a ball mill tank, ball milled at a speed of 400r / min for 4 hours, and passed through a 300 mesh sieve to obtain carboniz...

technical field

[0001] The invention relates to a preparation method of composite conductive plastic, which belongs to the technical field of plastic industry. Background technique

[0002] Plastic itself is a good insulator, and the volume resistivity of most plastics exceeds 10 15 Ω.cm, even up to 10 20 Ω.cm. Its excellent insulation properties make plastics widely used in electrical and electronic, mechanical, chemical and other industries. Wire and cable sheaths, electric tool casings, and electrical equipment casings all give full play to the insulating properties of plastics. However, the good insulating properties of plastics also limit its application in certain industries.

[0003] The insulation of plastics prevents the electrostatic charge accumulated on the surface of plastic products from being released, and then forms an electrostatic voltage, which is easy to absorb dirt such as dust. When the electrostatic voltage reaches a certain level, electrostatic dis...

Examples

Example Embodiment

[0027] Example 1

[0028] In parts by weight, take 1 part of gum arabic, 8 parts of green bamboo and 0.5 part of 200 mesh copper powder, put the green bamboo, gum arabic and copper powder together in a ball milling tank, ball mill at 200r / min for 2h to obtain colloid Powder mixture; fill the prepared colloidal powder mixture into a block mold, press it at 5MPa at room temperature, hold the pressure for 2 minutes, demold and place it in an oven at 80°C, after heat curing for 1 hour, stand and cool to The solidified material is obtained at room temperature; the solidified material is placed in a tubular atmosphere furnace, nitrogen is introduced, the flow of nitrogen is controlled to be 45mL / min, the temperature is controlled at 600 ℃ in a nitrogen atmosphere, and the temperature is kept for 2 hours to obtain a carbonized mixture; The mixture is placed in a ball milling tank, ball milled at a speed of 300r / min for 3 hours and passed through a 300 mesh sieve to obtain carbonized par...

Example Embodiment

[0029] Example 2

[0030] In parts by weight, take 2 parts of gum arabic, 9 parts of green bamboo and 1.0 part of 200 mesh copper powder, put the green bamboo, gum arabic and copper powder together in a ball milling tank, ball mill at 220r / min for 2h to obtain colloid Powder mixture; fill the prepared colloidal powder mixture into a block mold, press it at 8MPa at room temperature, hold the pressure for 2 minutes, demold and place it in an oven at 90°C, after heat curing for 1 hour, stand and cool to At room temperature, the solidified material is obtained; the solidified material is placed in a tubular atmosphere furnace, nitrogen is introduced, the flow of nitrogen is controlled to 48mL / min, the temperature is controlled at 650℃ in a nitrogen atmosphere, and the temperature is kept for 2 hours to obtain a carbonized mixture; The mixture is placed in a ball milling tank, ball milled at a speed of 350r / min for 3 hours and passed through a 300 mesh sieve to obtain carbonized parti...

Example Embodiment

[0031] Example 3

[0032] In parts by weight, take 3 parts of gum arabic, 10 parts of green bamboo and 1.5 parts of 200 mesh copper powder, put the green bamboo, gum arabic and copper powder together in a ball milling tank, ball mill at 250r / min for 3 hours to obtain colloid Powder mixture; fill the prepared colloidal powder mixture into a block mold, press it at 10MPa at room temperature, hold the pressure for 3 minutes, demold and place it in an oven at 100°C, after heat curing for 2 hours, stand and cool to The solidified material is obtained at room temperature; the solidified material is placed in a tubular atmosphere furnace, nitrogen is introduced, the flow of nitrogen is controlled to 50mL / min, the temperature is controlled at 700 ℃ in a nitrogen atmosphere, and the temperature is kept for 3 hours to obtain a carbonized mixture; The mixture is placed in a ball mill tank, ball milled at a speed of 400r / min for 4 hours, and passed through a 300 mesh sieve to obtain carboniz...

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