CN102181112A

CN102181112A - Plastic-based composite material capable of conducting electricity and shielding electromagnetic waves and preparation method thereof

Info

Publication number: CN102181112A
Application number: CN 201110137076
Authority: CN
Inventors: 曾斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-25
Filing date: 2011-05-25
Publication date: 2011-09-14
Anticipated expiration: 2031-05-25
Also published as: CN102181112B

Abstract

The invention discloses a plastic-based composite material capable of conducting electricity and shielding electromagnetic waves. The composite material consists of the following raw materials in parts by mass: 80-95 parts of plastic substrate, 1-20 parts of surface-modified high-efficiency conductive agent and 0.5-1 part of antioxidant. A product in the invention has high conductivity and high mechanical property, can be used for shielding electromagnetic waves to a greater extent, and can be widely applied to the fields of electronic consumables, remote monitoring/communication, military affairs and outdoor/indoor power supply.

Description

Can conduct electricity, the electromagnetic plastic base composite material of maskable and preparation method thereof

Technical field

The present invention relates to a kind ofly conduct electricity, the electromagnetic plastic base composite material of maskable and preparation method thereof.

Background technology

Along with the development of electronic industry, electronic products such as various household electrical appliances, office electrical equipment, plant and instrument obtain popularizing widely and using, and also discharge a large amount of electromagnetic radiation when offering convenience to people, are endangering people's health.

For this reason, people constantly seek the matrix material with better capability of electromagnetic shielding, with plastics is that the matrix material with conduction and electro-magnetic screen function of matrix is owing to have less density, lower cost receives the concern of society gradually, people seek the whole bag of tricks plastics are carried out modification, as in plastic substrate, adding conductive metal powder, conductive mica powder or the like obtains the matrix material of corresponding function, yet, because the consistency of conducting particles and plastic substrate, the dispersiveness of conducting particles, and processing conditions or the like problem, the shielding properties of the matrix material that obtains at last, mechanical properties etc. are often not good.

Summary of the invention

The purpose of this invention is to provide a kind ofly conduct electricity, the electromagnetic plastic base composite material of maskable.

The technical solution used in the present invention is:

A kind ofly conduct electricity, the electromagnetic plastic base composite material of maskable, its raw material by following mass parts is formed: the high-effective conductive agent of the surface modification of the plastic substrate of 80-95 part, 1-20 part, the oxidation inhibitor of 0.5-1 part.

Described plastic substrate is a kind of among PTFE, PP, PET, the PC.

Described oxidation inhibitor is at least a in 1010,1135,168.

A kind ofly conduct electricity, the preparation method of the electromagnetic plastic base composite material of maskable, may further comprise the steps:

1) high-effective conductive agent, the oxidation inhibitor with plastic substrate, surface modification mixes;

2) material that step 1) is obtained is extruded in forcing machine.

The invention has the beneficial effects as follows: product of the present invention, have excellent conducting performance, mechanical property, shielding electromagnetic wave can be widely used in consumer electronics, remote monitoring/communication, military affairs, field/indoor power supply field largely.

Embodiment

1) high-effective conductive agent, the oxidation inhibitor with plastic substrate, surface modification placed the mixing machine mixing 2-3 minute;

2) material that step 1) is obtained is extruded in parallel dual-screw extruding machine, and the screw slenderness ratio of forcing machine is 1:30-40.

When carrying out Composite Preparation with the prescription among the embodiment, among the embodiment 1-3, the temperature of forcing machine is 300-350 ℃, among the embodiment 4, the temperature of forcing machine is 180-210 ℃, among the embodiment 5, the temperature of forcing machine is 270-285 ℃, and among the embodiment 6, the temperature of forcing machine is 250-300 ℃.

Below in conjunction with specific embodiment prescription of the present invention is described further:

Embodiment 1:

Can conduct electricity, the prescription table 1 composed as follows of the electromagnetic plastic base composite material of maskable:

Table 1: can conduct electricity, the prescription of the electromagnetic plastic base composite material of maskable forms

Raw material	Mass parts
		The high-effective conductive agent of surface modification	20
PTFE	80
		Antioxidant 1010	0.5

Embodiment 2:

Can conduct electricity, the prescription table 2 composed as follows of the electromagnetic plastic base composite material of maskable:

Table 2: can conduct electricity, the prescription of the electromagnetic plastic base composite material of maskable forms

Raw material	Mass parts
		The high-effective conductive agent of surface modification	10
PTFE	90
		Antioxidant 1010	0.5

Embodiment 3:

Can conduct electricity, the prescription table 3 composed as follows of the electromagnetic plastic base composite material of maskable:

Table 3: can conduct electricity, the prescription of the electromagnetic plastic base composite material of maskable forms

Raw material	Mass parts
		The high-effective conductive agent of surface modification	5
PTFE	95
		Oxidation inhibitor 168	0.5

Embodiment 4:

Can conduct electricity, the prescription table 4 composed as follows of the electromagnetic plastic base composite material of maskable:

Table 4: can conduct electricity, the prescription of the electromagnetic plastic base composite material of maskable forms

Raw material	Mass parts
		The high-effective conductive agent of surface modification	1
PP	85
		Oxidation inhibitor 168	0.6

Embodiment 5:

Can conduct electricity, the prescription table 5 composed as follows of the electromagnetic plastic base composite material of maskable:

Table 5: can conduct electricity, the prescription of the electromagnetic plastic base composite material of maskable forms

Raw material	Mass parts
		The high-effective conductive agent of surface modification	5
PET	80
		Oxidation inhibitor 168	1

Embodiment 6:

Can conduct electricity, the prescription table 6 composed as follows of the electromagnetic plastic base composite material of maskable:

Table 6: can conduct electricity, the prescription of the electromagnetic plastic base composite material of maskable forms

Raw material	Mass parts
		The high-effective conductive agent of surface modification	10
PC	90
		Oxidation inhibitor 168	0.7

Performance of composites such as following table 7 by embodiment 1-3 preparation:

Table 7: the performance of the conducting electricity of the present invention preparation, the electromagnetic plastic base composite material of maskable

Performance	Unit	Embodiment 1	Embodiment 2	Embodiment 3
					Tensile strength	Mpa	20	20	20
Modulus in flexure	Mpa	850	800	600

The simply supported beam notch shock	KJ/m ²	35	38	43
					Surface resistivity	Ω	＜10	＜10	＜10
Electromagnetic shielding efficiency	dB	＞60	＞60	＞60

Among the present invention, the high-effective conductive agent of surface modification makes by the following method: with Graphene (model: GS-1) place the high-speed mixer mixing to get final product in 2-3 minute with the titanate coupling agent that accounts for Graphene quality 1%.

As can be seen from Table 7, product of the present invention, have excellent conducting performance, mechanical property, can well shielding electromagnetic wave, simultaneously, that this matrix material has is durable, the characteristics such as product of light specific gravity, plastic complex construction, can be widely used in consumer electronics, remote monitoring/communication, military affairs, field/indoor power supply field.Meet the strategic plan of nation-building resource-conserving and environment-friendly society fully.

Claims

One kind can conduct electricity, the electromagnetic plastic base composite material of maskable, it is characterized in that: its raw material by following mass parts is formed: the high-effective conductive agent of the surface modification of the plastic substrate of 80-95 part, 1-20 part, the oxidation inhibitor of 0.5-1 part.
2. according to claim 1ly a kind ofly conduct electricity, the electromagnetic plastic base composite material of maskable, it is characterized in that: described plastic substrate is a kind of among PTFE, PP, PET, the PC.
3. according to claim 1ly a kind ofly conduct electricity, the electromagnetic plastic base composite material of maskable, it is characterized in that: described oxidation inhibitor is at least a in 1010,1135,168.
Claim 1 describedly a kind ofly conduct electricity, the preparation method of the electromagnetic plastic base composite material of maskable, it is characterized in that: may further comprise the steps:

1) high-effective conductive agent, the oxidation inhibitor with plastic substrate, surface modification mixes;

2) material that step 1) is obtained is extruded in forcing machine.