1. The electromagnetic shielding composite coating is characterized by comprising the following components in parts by weight:

environment-friendly epoxy resin: 100 parts of (A);

barium sulfate: 10 parts of (A);

deionized water: 50 parts of a mixture;

iron oxide red: 30 parts of (1);

silane coupling agent KH-570: 15 parts of (1);

silver powder: 15 parts of (1);

graphene: 5 parts of a mixture;

rose essential oil: 5 parts of the raw materials.

2. The utility model provides a ventilative type electromagnetic shield heat insulating cloth which characterized in that, ventilative type electromagnetic shield heat insulating cloth is including range upon range of setting in proper order: the electromagnetic shielding composite coating comprises a base cloth layer, an elastic breathable layer, a heat insulation layer, an electromagnetic shielding composite coating and a waterproof wear-resistant layer; the electromagnetic shielding composite coating is formed by coating and curing the electromagnetic shielding composite coating of claim 1.

3. The air-permeable electromagnetic shielding and thermal insulating cloth according to claim 2, wherein the base cloth layer is made of pure cotton.

4. The air-permeable electromagnetic shielding and heat insulating cloth according to claim 2, wherein the elastic air-permeable layer is woven from a knitted fabric.

5. The air-permeable electromagnetic shielding and heat insulating cloth according to claim 2, wherein the heat insulating layer is made of polyester taffeta silver coated cloth.

6. The air-permeable electromagnetic shielding and heat insulating cloth according to claim 2, wherein the waterproof and wear-resistant layer is made by laminating 70% by mass of polyester fiber and 25% by mass of flame-retardant vinylon.

7. The air-permeable electromagnetic shielding and heat insulating cloth according to claim 2, wherein the elastic air-permeable layer, the heat insulating layer, the electromagnetic shielding composite coating layer and the waterproof and wear-resistant layer respectively have a plurality of pores communicated with the outside.

8. The air-permeable electromagnetic shielding and heat insulating cloth of claim 7, wherein the pore diameter of the plurality of pores is 250-500 μm.

9. The air-permeable electromagnetic shielding and heat insulating cloth of claim 7, wherein the inner walls of the plurality of channels are coated with a nano-antibacterial coating.

10. A process for preparing the air-permeable electromagnetic shielding and thermal insulating cloth according to any one of claims 2 to 9, comprising the steps of:

respectively preparing a base cloth layer, an elastic breathable layer, a heat insulation layer, an electromagnetic shielding composite coating and a waterproof wear-resistant layer;

sequentially bonding the base cloth layer, the elastic breathable layer, the heat insulation layer, the electromagnetic shielding composite coating and the waterproof wear-resistant layer, and then carrying out hot press molding;

holes communicated with the outside are made in the elastic breathable layer, the heat insulation layer, the electromagnetic shielding composite coating and the waterproof wear-resistant layer.

Background

With the rapid development of electronic technology, electromagnetic radiation is ubiquitous, and people receive electromagnetic wave radiation from nature and man-made at any time and any place, such as televisions, refrigerators, air conditioners, microwave ovens, computers, mobile phones, electronic instruments, medical equipment and the like, which can release certain electromagnetic wave radiation.

Electromagnetic shielding is the use of shields to block or attenuate the transmission path of electromagnetic interference energy, thereby suppressing electromagnetic interference. In order to prevent interference and leakage caused by electromagnetic wave radiation, electromagnetic shielding using an electromagnetic shielding material is a main method currently used.

The existing shielding materials comprise an electromagnetic shielding metal plate, electromagnetic shielding cloth and the like, wherein the electromagnetic shielding cloth is widely applied to labor protection clothes of professionals such as computers, microwaves, anti-static and explosion-proof clothes, maternity clothes, shielding tents for military use, shielding curtains, equipment covering clothes, electrostatic protection of electronic instruments, information safety shielding and the like.

However, the existing electromagnetic shielding cloth is mainly made by adding heavy metal wires or conductive fibers during weaving, and the metal wires are easy to break in the production process, and have poor flexibility and air permeability. Therefore, it is necessary to provide a further solution to the problem of positioning the carrier board.

Disclosure of Invention

The invention aims to provide an electromagnetic shielding composite coating, a breathable electromagnetic shielding heat-insulating cloth and a preparation process thereof, so as to overcome the defects in the prior art.

In order to achieve the aim, the invention provides an electromagnetic shielding composite coating which comprises the following components in parts by weight:

environment-friendly epoxy resin: 100 parts of (A);

barium sulfate: 10 parts of (A);

deionized water: 50 parts of a mixture;

iron oxide red: 30 parts of (1);

silane coupling agent KH-570: 15 parts of (1);

silver powder: 15 parts of (1);

graphene: 5 parts of a mixture;

rose essential oil: 5 parts of the raw materials.

In order to achieve the above object, the present invention provides a breathable electromagnetic shielding and heat insulating cloth, which comprises: the electromagnetic shielding composite coating comprises a base cloth layer, an elastic breathable layer, a heat insulation layer, an electromagnetic shielding composite coating and a waterproof wear-resistant layer; the electromagnetic shielding composite coating is formed by coating and curing the electromagnetic shielding composite coating.

As an improvement of the breathable electromagnetic shielding heat insulation cloth, the base cloth layer is made of pure cotton.

As an improvement of the breathable electromagnetic shielding heat-insulating cloth, the elastic breathable layer is woven by knitted fabric.

As an improvement of the breathable electromagnetic shielding heat-insulating cloth, the heat-insulating layer is made of polyester taffeta silver-coated cloth.

As an improvement of the breathable electromagnetic shielding heat insulation cloth, the waterproof and wear-resistant layer is formed by laminating 70 mass percent of polyester fiber and 25 mass percent of flame-proof vinylon in a composite manner.

As an improvement of the breathable electromagnetic shielding heat-insulating cloth, the elastic breathable layer, the heat-insulating layer, the electromagnetic shielding composite coating and the waterproof wear-resistant layer are respectively provided with a plurality of pore channels communicated with the outside.

As an improvement of the breathable electromagnetic shielding and heat insulating cloth, the pore diameter of the plurality of pore channels is 250-500 mu m.

As an improvement of the breathable electromagnetic shielding heat-insulating cloth, the inner walls of the plurality of pore channels are coated with nano antibacterial coatings.

In order to achieve the above object, the present invention provides a preparation process of the above air-permeable electromagnetic shielding heat insulating cloth, comprising the following steps:

respectively preparing a base cloth layer, an elastic breathable layer, a heat insulation layer, an electromagnetic shielding composite coating and a waterproof wear-resistant layer;

sequentially bonding the base cloth layer, the elastic breathable layer, the heat insulation layer, the electromagnetic shielding composite coating and the waterproof wear-resistant layer, and then carrying out hot press molding;

holes communicated with the outside are made in the elastic breathable layer, the heat insulation layer, the electromagnetic shielding composite coating and the waterproof wear-resistant layer.

Compared with the prior art, the invention has the beneficial effects that: the breathable electromagnetic shielding heat insulation cloth disclosed by the invention is of a multilayer composite structure and has the advantages of simple and convenient preparation process and low cost. Meanwhile, the electromagnetic shielding composite coating is added into the breathable electromagnetic shielding heat insulation cloth, so that heavy metal wires or conductive fibers are not needed, and the breathable electromagnetic shielding heat insulation cloth has the advantages of environmental protection, no toxicity, light weight, good heat insulation performance, good electromagnetic shielding effect, good softness and breathability and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic layer structure diagram of an embodiment of the air-permeable electromagnetic shielding and thermal insulating cloth of the present invention.

Detailed Description

The present invention is described in detail below with reference to various embodiments, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should be able to make modifications and substitutions on the functions, methods, or structures of these embodiments without departing from the scope of the present invention.

The invention provides an electromagnetic shielding composite coating which comprises the following components in parts by weight: environment-friendly epoxy resin: 100 parts of barium sulfate: 10 parts of deionized water: 50 parts of iron oxide red: 30 parts of silane coupling agent KH-570: 15 parts of silver powder: 15 parts of graphene: 5 parts of rose essential oil: 5 parts of the raw materials.

The electromagnetic shielding composite coating can replace heavy metal wires or conductive fibers in the prior art, and the electromagnetic shielding cloth made of the electromagnetic shielding composite coating has the advantages of environmental protection, no toxicity, light weight, good electromagnetic shielding effect and the like.

As shown in fig. 1, the present invention further provides a breathable electromagnetic shielding and thermal insulating cloth, which comprises: the electromagnetic shielding composite coating comprises a base cloth layer 1, an elastic breathable layer 2, a heat insulation layer 3, an electromagnetic shielding composite coating 4 and a waterproof wear-resistant layer 5.

Wherein, the electromagnetic shielding composite coating 4 is formed by coating and curing the electromagnetic shielding composite coating as described above. According to the design, the electromagnetic shielding composite coating is added into the breathable electromagnetic shielding heat insulation cloth, so that heavy metal wires or conductive fibers are not required to be added, and the breathable electromagnetic shielding heat insulation cloth has the advantages of environmental friendliness, no toxicity, light weight, good heat insulation performance, good electromagnetic shielding effect, good softness and breathability and the like.

Further, the base fabric layer 1 is made of pure cotton. The elastic breathable layer 2 is woven by knitted fabric. The heat insulation layer 3 is made of polyester taffeta silver-coated cloth. The waterproof wear-resistant layer 5 is formed by compounding and laminating 70% by mass of polyester fibers and 25% by mass of flame-retardant vinylon.

In addition, the elastic breathable layer 2, the heat insulation layer 3, the electromagnetic shielding composite coating 4 and the waterproof wear-resistant layer 5 are respectively provided with a plurality of pore channels communicated with the outside. Therefore, the air permeability of the electromagnetic shielding heat insulation cloth is increased. In one embodiment, the pore size of the plurality of channels is 250-500 μm. The inner walls of the plurality of pore channels are coated with nano antibacterial coatings. The holes of the layers can be respectively and independently arranged and are communicated with the outside; alternatively, the layers may be perforated sequentially by holes communicating with the outside, and this embodiment is a preferred embodiment because of the ease of the manufacturing process.

The breathable electromagnetic shielding heat insulation cloth is prepared by the following preparation process:

s1, respectively preparing a base cloth layer, an elastic breathable layer, a heat insulation layer, an electromagnetic shielding composite coating and a waterproof wear-resistant layer;

s2, sequentially bonding the base cloth layer, the elastic breathable layer, the heat insulation layer, the electromagnetic shielding composite coating and the waterproof wear-resistant layer, and then carrying out hot press molding;

s3, making holes communicated with the outside on the elastic breathable layer, the heat insulation layer, the electromagnetic shielding composite coating and the waterproof wear-resistant layer.

The following will illustrate the technical solutions of the air-permeable electromagnetic shielding and thermal insulating fabric and the preparation process thereof according to several specific embodiments.

Example 1

A kind of ventilative electromagnetic shielding heat insulation cloth, it includes the base cloth layer 1; the base cloth layer 1 is provided with an elastic breathable layer 2; a heat insulation layer 3 is arranged above the elastic breathable layer 2; an electromagnetic shielding composite coating 4 is coated on the heat insulation layer 3; the electromagnetic shielding composite coating 4 is provided with a waterproof wear-resistant layer 5. A plurality of small pipelines 6 communicated with the outside are reserved in the elastic breathable layer 2, the heat insulation layer 3, the electromagnetic shielding composite coating 4 and the waterproof wear-resistant layer 5.

The aperture of the fine pipeline 6 in each layer is 400 um; the inner wall of the fine pipeline 6 is coated with a nano antibacterial coating; the coating in the electromagnetic shielding composite coating 4 comprises the following components in parts by weight: 100 parts of environment-friendly epoxy resin, 10 parts of barium sulfate, 50 parts of deionized water, 30 parts of iron oxide red, 15 parts of silane coupling agent KH-57015 parts, 15 parts of silver powder, 5 parts of graphene and 5 parts of rose essential oil.

The heat insulation layer 3 is made of polyester taffeta silver-coated cloth; the waterproof wear-resistant layer 5 is prepared by compounding 70 mass percent of polyester fiber and 25 mass percent of flame-proof vinylon; the base cloth layer 1 is made of pure cotton; the elastic breathable layer 2 is woven from a knitted fabric.

The preparation process of the breathable electromagnetic shielding heat insulation cloth comprises the following steps:

s1: respectively preparing a base cloth layer 1, an elastic breathable layer 2, a heat insulation layer 3, an electromagnetic shielding composite coating 4 and a waterproof wear-resistant layer 5;

s2: bonding the base cloth layer 1, the elastic breathable layer 2, the heat insulation layer 3, the electromagnetic shielding composite coating 4 and the waterproof wear-resistant layer 5 from bottom to top by using an environment-friendly adhesive, and then sending the obtained product into a hot press for hot press molding;

s3: and (3) punching a fine pipeline 6 in the elastic breathable layer 2, the heat insulation layer 3, the electromagnetic shielding composite coating 4 and the waterproof wear-resistant layer 5 by using a needle.

Example 2

A kind of ventilative electromagnetic shielding heat insulation cloth, it includes the base cloth layer 1; the base cloth layer 1 is provided with an elastic breathable layer 2; a heat insulation layer 3 is arranged above the elastic breathable layer 2; an electromagnetic shielding composite coating 4 is coated on the heat insulation layer 3; the electromagnetic shielding composite coating 4 is provided with a waterproof wear-resistant layer 5. A plurality of small pipelines 6 communicated with the outside are reserved in the elastic breathable layer 2, the heat insulation layer 3, the electromagnetic shielding composite coating 4 and the waterproof wear-resistant layer 5.

The aperture of the fine pipeline 6 in each layer is 250 um; the inner wall of the fine pipeline 6 is coated with a nano antibacterial coating; the coating in the electromagnetic shielding composite coating 4 comprises the following components in parts by weight: 100 parts of environment-friendly epoxy resin, 10 parts of barium sulfate, 50 parts of deionized water, 30 parts of iron oxide red, 15 parts of silane coupling agent KH-57015 parts, 15 parts of silver powder, 5 parts of graphene and 5 parts of rose essential oil.

The heat insulation layer 3 is made of polyester taffeta silver-coated cloth; the waterproof wear-resistant layer 5 is prepared by compounding 70 mass percent of polyester fiber and 25 mass percent of flame-proof vinylon; the base cloth layer 1 is made of pure cotton; the elastic breathable layer 2 is woven from a knitted fabric.

The preparation process of the breathable electromagnetic shielding heat insulation cloth comprises the following steps:

s1: respectively preparing a base cloth layer 1, an elastic breathable layer 2, a heat insulation layer 3, an electromagnetic shielding composite coating 4 and a waterproof wear-resistant layer 5;

s2: bonding the base cloth layer 1, the elastic breathable layer 2, the heat insulation layer 3, the electromagnetic shielding composite coating 4 and the waterproof wear-resistant layer 5 from bottom to top by using an environment-friendly adhesive, and then sending the obtained product into a hot press for hot press molding;

s3: and (3) punching a fine pipeline 6 in the elastic breathable layer 2, the heat insulation layer 3, the electromagnetic shielding composite coating 4 and the waterproof wear-resistant layer 5 by using a needle.

Example 3

A kind of ventilative electromagnetic shielding heat insulation cloth, it includes the base cloth layer 1; the base cloth layer 1 is provided with an elastic breathable layer 2; a heat insulation layer 3 is arranged above the elastic breathable layer 2; an electromagnetic shielding composite coating 4 is coated on the heat insulation layer 3; the electromagnetic shielding composite coating 4 is provided with a waterproof wear-resistant layer 5. A plurality of small pipelines 6 communicated with the outside are reserved in the elastic breathable layer 2, the heat insulation layer 3, the electromagnetic shielding composite coating 4 and the waterproof wear-resistant layer 5.

The aperture of the fine pipeline 6 in each layer is 500 um; the inner wall of the fine pipeline 6 is coated with a nano antibacterial coating; the coating in the electromagnetic shielding composite coating 4 comprises the following components in parts by weight: 100 parts of environment-friendly epoxy resin, 10 parts of barium sulfate, 50 parts of deionized water, 30 parts of iron oxide red, 15 parts of silane coupling agent KH-57015 parts, 15 parts of silver powder, 5 parts of graphene and 5 parts of rose essential oil.

The heat insulation layer 3 is made of polyester taffeta silver-coated cloth; the waterproof wear-resistant layer 5 is prepared by compounding 70 mass percent of polyester fiber and 25 mass percent of flame-proof vinylon; the base cloth layer 1 is made of pure cotton; the elastic breathable layer 2 is woven from a knitted fabric.

The preparation process of the breathable electromagnetic shielding heat insulation cloth comprises the following steps:

s1: respectively preparing a base cloth layer 1, an elastic breathable layer 2, a heat insulation layer 3, an electromagnetic shielding composite coating 4 and a waterproof wear-resistant layer 5;

s2: bonding the base cloth layer 1, the elastic breathable layer 2, the heat insulation layer 3, the electromagnetic shielding composite coating 4 and the waterproof wear-resistant layer 5 from bottom to top by using an environment-friendly adhesive, and then sending the obtained product into a hot press for hot press molding;

s3: and (3) punching a fine pipeline 6 in the elastic breathable layer 2, the heat insulation layer 3, the electromagnetic shielding composite coating 4 and the waterproof wear-resistant layer 5 by using a needle.

The following tests were conducted on the performance of the air-permeable electromagnetic shielding and heat insulating cloth of examples 1 to 3 in terms of electromagnetic shielding and heat insulation and fire prevention. The test results were as follows:

the performance tests in terms of electromagnetic shielding and heat insulation and fire prevention were performed on the breathable electromagnetic shielding and heat insulation cloth prepared in examples 1 to 3.

Electromagnetic shielding performance test results of the test in a frequency range of 10MHz to 40GHz according to SJ20524-1995 show that the electromagnetic shielding performance is 85-90 dB.

The fire-proof and heat-insulating property test is carried out according to the national standard GB5455-85, and the damage length, the afterflame time and the flame retardant time of the flame-retardant fabric are measured for the product. The test results were as follows: the damaged length of the flame-retardant fabric is less than or equal to 100 mm; the burning time is less than or equal to 5 s; the smoldering time is less than or equal to 15 s.

Therefore, the breathable electromagnetic shielding heat insulation cloth has good electromagnetic shielding effect and good fireproof performance.

In conclusion, the breathable electromagnetic shielding heat insulation cloth disclosed by the invention is of a multilayer composite structure, and has the advantages of simple and convenient preparation process and low cost. Meanwhile, the electromagnetic shielding composite coating is added into the breathable electromagnetic shielding heat insulation cloth, so that heavy metal wires or conductive fibers are not needed, and the breathable electromagnetic shielding heat insulation cloth has the advantages of environmental protection, no toxicity, light weight, good heat insulation performance, good electromagnetic shielding effect, good softness and breathability and the like.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.