阅读说明：本技术 一种小面积平面搭接用高耐候性的哑黑遮光导电布胶带 (Small-area plane lapping is with mute black shading electrically conductive cloth sticky tape of high weatherability ) 是由 张全玲 李桂玲 于 2021-08-12 设计创作，主要内容包括：本发明公开了一种小面积平面搭接用高耐候性的哑黑遮光导电布胶带,属于EMI电磁屏蔽技术领域和导电布应用领域,本装置在使用过程中,光线透过导电纤维布照射进储料袋内时,氯化银粉末与光线产生光解反应变成黑色,对光线进行遮挡,同时氯化银粉末光解生成氯气和银,将其受光线直射地方的热量分散将温度降低,且因储料袋内产生的热量造成球囊受热膨胀,多个磁铁块相互排斥,在储料袋进行左右摇摆晃动,将处于底部的氯化银粉末通过晃动产生移动能够与光线接触的更加充分,提高对光线的遮光效率,同时膨胀囊体受热向下膨胀,对粘结剂进行挤压,通过压强的作用下使粘结剂流向粘合面,使得导电纤维布在长时间使用下不易翘边。(The invention discloses a high-weather-resistance matte black shading conductive cloth adhesive tape for small-area plane lapping, which belongs to the technical field of EMI electromagnetic shielding and the application field of conductive cloth, in the using process of the device, when light irradiates into a storage bag through conductive fiber cloth, silver chloride powder and the light generate photolysis reaction to become black to shade the light, meanwhile, the silver chloride powder photolysis generates chlorine and silver, the temperature is reduced by dispersing heat at the direct irradiation position of the light, and the balloon is heated to expand due to the heat generated in the storage bag, a plurality of magnet blocks are mutually exclusive, the storage bag is swung left and right, silver chloride powder at the bottom is moved by the swinging to be more fully contacted with the light, the shading efficiency of the light is improved, meanwhile, an expansion capsule body is heated to expand downwards to extrude the adhesive, the adhesive flows to an adhesive surface under the action of pressure, the conductive fiber cloth is not easy to warp edge after long-time use.)

1. The utility model provides a little area plane overlap joint is with mute black shading electrically conductive cloth sticky tape of high weatherability, includes conductive fiber cloth (1), its characterized in that: the conductive fiber cloth comprises a conductive fiber cloth (1), wherein the upper end and the lower end of the conductive fiber cloth (1) are respectively coated with a special treatment layer (2), the lower end of the special treatment layer (2) is coated with an adhesive layer (3), the lower end of the adhesive layer (3) is coated with a release layer (4), the outer end of the conductive fiber cloth (1) is coated with two symmetrical ink layers (5), a storage bag (6) is embedded in the conductive fiber cloth (1), silver chloride powder (7) is filled in the storage bag (6), a plurality of uniformly distributed diversion ropes (8) are fixedly connected between the inner walls of the storage bag (6), the outer end of each diversion rope (8) is fixedly connected with a plurality of uniformly distributed balloons (9), the inner cavity of each balloon (9) is filled with a plurality of mutually abutted absolute magnetic powder (10), a magnet block (12) is arranged in each balloon (9), and two symmetrical fixing ropes (11) are fixedly connected between the block (12) and the inner wall of each balloon (9), the bottom end in conductive fiber cloth (1) is equipped with anti-limit device that sticks up.

2. The high weather-resistant matte black shading conductive cloth adhesive tape for small-area plane lapping according to claim 1, which is characterized in that: the anti-limit device that sticks up includes a plurality of evenly distributed's of electrically conductive fiber cloth (1) inner bottom fixed connection squeeze box (14), top fixedly connected with inflation utricule (15) in squeeze box (14), fixedly connected with heat conduction fiber (19) between inflation utricule (15) and storage bag (6), heat conduction fiber (19) run through squeeze box (14), punch through-hole (16) have been dug to squeeze box (14) lower extreme, fixedly connected with valve (17) between through-hole (16) inner wall, squeeze box (14) intussuseption is filled with binder (18), binder (18) are located inflation utricule (15) downside, electrically conductive fiber cloth (1) lower extreme is dug has a plurality of evenly distributed's flow through-hole (13), flow through-hole (13) are corresponding with through-hole (16).

3. The high weather-resistant matte black shading conductive cloth adhesive tape for small-area plane lapping according to claim 1, which is characterized in that: the outer end of the special treatment layer (2) is embedded with a plurality of flame retardant particles (20) which are uniformly distributed, and the flame retardant grade of the flame retardant particles (20) reaches UL-94V 0.

4. The high weather-resistant matte black shading conductive cloth adhesive tape for small-area plane lapping according to claim 1, which is characterized in that: starch water glass (21) is sprayed between the conductive fiber cloth (1) and the special treatment layer (2).

5. The high weather-resistant matte black shading conductive cloth adhesive tape for small-area plane lapping according to claim 1, which is characterized in that: the ink layer (5) comprises 300 parts of ink, 35-60 parts of curing agent and 200 parts of ethyl acetate.

6. The high weather-resistant matte black shading conductive cloth adhesive tape for small-area plane lapping according to claim 1, which is characterized in that: the conductive fiber cloth comprises conductive fiber cloth (1) and is characterized in that the upper end of the conductive fiber cloth (1) is coated with black conductive adhesive, and the black conductive adhesive comprises 150 parts of acrylic acid adhesive, 1.0-1.8 parts of curing agent, 40-60 parts of printing ink, 25-35 parts of conductive particles and 40 parts of ethyl acetate.

7. The high weather-resistant matte black shading conductive cloth adhesive tape for small-area plane lapping according to claim 1, which is characterized in that: the special treatment layer (2) is formed by uniformly mixing the following components in parts by weight: 150 portions of ink, 40 to 50 portions of toluene, 5 to 8 portions of mixed type polyisocyanate curing agent and 9 to 16 portions of organosilicon polymerization leveling agent.

8. The high weather-resistant matte black shading conductive cloth adhesive tape for small-area plane lapping according to claim 2, which is characterized in that: the lower end of the expansion capsule body (15) is fixedly connected with a plurality of uniformly distributed spheres, the spheres are members made of rod-like waxy crystals, and the contact angle between the spheres and the binder (18) is 180 degrees.

9. The high weather-resistant matte black shading conductive cloth adhesive tape for small-area plane lapping according to claim 1, which is characterized in that: the magnetism-insulating powder (10) is made of Fe-Ni alloy materials, and the Ni content of the Fe-Ni alloy is 80%.

Technical Field

The invention relates to the technical field of EMI electromagnetic shielding and the application field of conductive cloth, in particular to a high-weather-resistance matte black shading conductive cloth adhesive tape for small-area plane lapping.

Background

The sun-shading cloth is also called as shading cloth, is used for shading sunlight and sunshine in short, is a functional auxiliary fabric, is usually used together with other fabrics for covering articles to prevent the articles from contacting with strong light, and has the effect of blocking the strong light and ultraviolet rays.

The general matte black conductive cloth material in the market at present can not completely shield light, and can be used in a small-area plane lap joint, particularly, after certain environment measurement conditions, the edge warping phenomenon is easy to occur, so that a high-weather-resistance matte black shielding conductive cloth adhesive tape for small-area plane lap joint is urgently needed to overcome the defects.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a matte black shading conductive cloth adhesive tape with small area and high weather resistance for plane lapping, which can realize that when light irradiates into a storage bag through conductive fiber cloth in the using process of the device, silver chloride powder and the light generate photolysis reaction, gradually change purple into black, shield the light, simultaneously the silver chloride powder photolysis generates chlorine and silver, the heat generated by irradiating on the surface of the conductive fiber cloth is uniformly dispersed, the heat of the direct light receiving part is reduced, and the saccule is heated and expanded due to the heat generated in the storage bag, so that the originally mutually abutted absolute magnetic powder is gradually separated, a plurality of magnet blocks are mutually exclusive, the storage bag swings left and right, the silver chloride powder at the bottom can be more fully contacted with the light by the movement generated by the swinging, the shading efficiency of light is improved, and heat conduction fiber is with heat transfer to inflation utricule surface simultaneously for the inflation utricule is heated and is expanded downwards, extrudees the binder, makes the binder see through valve flow direction flow through hole and the further bonding of adhesive surface under the effect through pressure, makes the difficult production of conductive fiber cloth stick up the limit under long-time the use.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A high-weather-resistance matte black shading conductive cloth adhesive tape for small-area plane lapping comprises conductive fiber cloth, wherein special treatment layers are respectively coated on the upper end and the lower end of the conductive fiber cloth, an adhesive layer is coated on the lower end of the special treatment layer, a release layer is coated on the lower end of the adhesive layer, two symmetrical ink layers are coated on the outer end of the conductive fiber cloth, a storage bag is embedded in the conductive fiber cloth, silver chloride powder is filled in the storage bag, a plurality of uniformly distributed flow guide ropes are fixedly connected between the inner walls of the storage bag, a plurality of uniformly distributed balloons are fixedly connected to the outer ends of the flow guide ropes, a plurality of mutually abutted magnetism-insulating powder is filled in an inner cavity of each balloon, magnet blocks are arranged in the balloons, two symmetrical fixed ropes are fixedly connected between the magnet blocks and the inner walls of the balloons, and an anti-edge-warping device is arranged at the end of the conductive fiber cloth, when the device is used, when light irradiates on the surface of the conductive fiber cloth, the special treatment layer and the ink layer perform primary shading and light absorption, so that the light is not easy to penetrate through the conductive fiber cloth, when the light irradiates into the storage bag through the conductive fiber cloth, the silver chloride powder and the light generate photolysis reaction, the light is gradually changed into purple and then changed into black, the light is further shielded, so that the light is not easy to penetrate through the conductive fiber cloth, meanwhile, the silver chloride powder photolysis generates chlorine and silver, the heat generated by irradiating on the surface of the conductive fiber cloth is uniformly dispersed, the heat of the direct light irradiation place is reduced, the spontaneous combustion phenomenon or the scalding of workers due to overhigh temperature is not easily caused, and the saccule is heated and expanded due to the heat generated in the storage bag, so that the originally mutually abutted magnet insulating powder is gradually separated, the magnet blocks emit magnetism to the outside, and a plurality of magnet blocks are mutually exclusive, rocking left and right rocking is carried out at the storage bag, and the silver chloride powder end that will be in the bottom produces through rocking and removes can with the more abundant of light contact, improves the shading efficiency to light.

Further, the anti-edge-warping device comprises a plurality of uniformly-distributed extrusion boxes fixedly connected with the inner bottom ends of the conductive fiber cloth, an expansion capsule is fixedly connected with the inner top ends of the extrusion boxes, heat-conducting fibers are fixedly connected between the expansion capsule and the storage bag and penetrate through the extrusion boxes, through holes are formed in the lower ends of the extrusion boxes, valves are fixedly connected between the inner walls of the through holes, binders are filled in the extrusion boxes, the binders are located on the lower sides of the expansion capsule, a plurality of uniformly-distributed flow through holes are formed in the lower ends of the conductive fiber cloth and correspond to the through holes, when heat is generated on the surface of the storage bag due to light irradiation, the heat is transmitted to the surface of the expansion capsule by the heat-conducting fibers, so that the expansion capsule is heated and expands downwards, the binders are extruded, and the binders are further bonded with the bonding surfaces through the flow through holes by the valves under the action of pressure, so that the conductive fiber cloth is not easy to generate edge warping when being used for a long time.

Furthermore, a plurality of flame retardant particles which are uniformly distributed are embedded at the outer end of the special treatment layer, the flame retardant grade of the flame retardant particles reaches UL-94V0, and the flame retardant particles are arranged, so that the special treatment layer can be prevented from spontaneous combustion caused by overhigh surface temperature of the special treatment layer in high-temperature weather for a long time, and the risk is reduced.

Furthermore, starch water glass is sprayed between the conductive fiber cloth and the special treatment layer, and the stiffness of the conductive fiber cloth and the special treatment layer can be improved by spraying the starch water glass, and meanwhile, the bonding strength between the layers is increased.

Further, the ink layer comprises 300 parts of ink, 35-60 parts of curing agent and 200 parts of ethyl acetate.

Furthermore, the upper end of the conductive fiber cloth is coated with black conductive adhesive, and the black conductive adhesive comprises 150 parts of acrylic acid adhesive, 1.0-1.8 parts of curing agent, 40-60 parts of printing ink, 25-35 parts of conductive particles and 40 parts of ethyl acetate.

Further, the special treatment layer is formed by uniformly mixing the following components in parts by weight: 150 portions of ink, 40 to 50 portions of toluene, 5 to 8 portions of mixed type polyisocyanate curing agent and 9 to 16 portions of organosilicon polymerization leveling agent.

Further, a plurality of evenly distributed balls are fixedly connected to the lower end of the expansion capsule body, the balls are members made of rod-like waxy crystals, contact angles of the balls and the binder are 180 degrees, the balls with the contact angles of 180 degrees are arranged, super-hydrophobic phenomena can be formed on the surface of the expansion capsule body, and the binder is not easily adhered to the surface of the expansion capsule body in contact with the expansion capsule body and can be fully utilized.

Furthermore, the magnetic insulation powder is made of Fe-Ni alloy materials, the Ni content of the Fe-Ni alloy is 80%, and the magnetic insulation powder has high magnetic conductivity, excellent saturation performance and low flexibility by arranging the Fe-Ni alloy materials, is easier to manufacture than silicon steel and enhances the magnetic insulation effect on the magnet block.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) when the device is used, when light irradiates into the storage bag through the conductive fiber cloth, the silver chloride powder and the light generate photolysis reaction, the light is gradually changed into purple and then changed into black, the light is shielded, meanwhile, the silver chloride powder is photolyzed to generate chlorine and silver, the heat generated by irradiating on the surface of the conductive fiber cloth is uniformly dispersed, the heat of the direct irradiating place of the conductive fiber cloth is reduced, the saccule is heated and expanded due to the heat generated in the storage bag, the originally mutually abutted magnetic insulation powder is gradually separated, a plurality of magnet blocks are mutually exclusive, the storage bag is shaken in a left-right swinging manner, the silver chloride powder at the bottom is moved by shaking to be in contact with the light more fully, the light shading efficiency of the light is improved, meanwhile, the heat is transferred to the surface of the expansion capsule body by the heat conducting fiber, so that the expansion capsule body is heated and expands downwards, the adhesive is extruded, flows to the flow through hole through the valve and is further bonded with the bonding surface under the action of pressure, so that the conductive fiber cloth is not easy to generate edge warping after being used for a long time.

(2) The anti-edge warping device comprises a plurality of evenly distributed extrusion boxes fixedly connected with the inner bottom end of conductive fiber cloth, the inner top end of each extrusion box is fixedly connected with an expansion capsule body, heat-conducting fibers are fixedly connected between the expansion capsule body and a storage bag and penetrate through the extrusion boxes, the lower ends of the extrusion boxes are chiseled with through holes, valves are fixedly connected between the inner walls of the through holes, binders are filled in the extrusion boxes and are positioned on the lower sides of the expansion capsule bodies, a plurality of evenly distributed flow through holes are chiseled at the lower ends of the conductive fiber cloth and correspond to the through holes, when the surface of the storage bag generates heat due to light irradiation, the heat conducting fibers transfer the heat to the surface of the expansion bag body, so that the expansion bag body is heated to expand downwards, the adhesive is extruded, flows to the flow through hole through the valve and is further bonded with the bonding surface under the action of pressure, so that the conductive fiber cloth is not easy to generate edge warping after being used for a long time.

(3) The outer end of the special treatment layer is embedded with a plurality of flame retardant particles which are uniformly distributed, the flame retardant grade of the flame retardant particles reaches UL-94V0, and the flame retardant particles are arranged, so that the special treatment layer can be prevented from spontaneous combustion caused by overhigh surface temperature of the special treatment layer in high-temperature weather for a long time, and the risk is reduced.

(4) Starch water glass is sprayed between the conductive fiber cloth and the special treatment layer, and the stiffness of the conductive fiber cloth and the special treatment layer can be improved by spraying the starch water glass, and meanwhile, the bonding strength between the layers is increased.

(5) The ink layer comprises 300 parts of ink, 35-60 parts of curing agent and 200 parts of ethyl acetate.

(6) The upper end of the conductive fiber cloth is coated with black conductive adhesive, and the black conductive adhesive comprises 150 parts of acrylic acid adhesive, 1.0-1.8 parts of curing agent, 40-60 parts of printing ink, 25-35 parts of conductive particles and 40 parts of ethyl acetate.

(7) The special treatment layer is formed by uniformly mixing the following components in parts by weight: 150 portions of ink, 40 to 50 portions of toluene, 5 to 8 portions of mixed type polyisocyanate curing agent and 9 to 16 portions of organosilicon polymerization leveling agent.

(8) Inflation utricule lower extreme fixedly connected with a plurality of evenly distributed's ball, the ball adopts the component that rod-like wax crystal made, and the ball is 180 with the contact angle of binder, is 180 contact angles' ball through setting up and binder angle, can be so that inflation utricule surface forms super hydrophobic phenomenon, and the binder is at the contact inflation utricule, and difficult adhesion is on inflation utricule surface, can make full use of binder.

(9) The magnetic insulation powder is made of Fe-Ni alloy materials, the Ni content of the Fe-Ni alloy is 80%, and the magnetic insulation powder has high magnetic conductivity, excellent saturation performance and low flexibility by arranging the Fe-Ni alloy materials, is easier to manufacture than silicon steel and enhances the magnetic insulation effect on the magnet block.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a schematic structural diagram of a special treatment layer according to the present invention;

FIG. 3 is a schematic cross-sectional view of the conductive fiber cloth according to the present invention;

FIG. 4 is a schematic view of a balloon according to the present invention;

FIG. 5 is a schematic view of the construction of the crush box of the present invention;

fig. 6 is a schematic structural diagram of the starch water glass of the invention.

The reference numbers in the figures illustrate:

the material comprises 1 conductive fiber cloth, 2 special treatment layers, 3 adhesive layers, 4 release layers, 5 ink layers, 6 storage bags, 7 silver chloride powder, 8 diversion ropes, 9 saccules, 10 magnetic isolation powder, 11 fixing ropes, 12 magnet blocks, 13 flowing through holes, 14 extrusion boxes, 15 expansion capsule bodies, 16 through holes, 17 valves, 18 binders, 19 heat conduction fibers, 20 flame-retardant particles and 21 starch water glass.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-4, a high weather-resistant matte black shading conductive cloth adhesive tape for small-area plane lapping comprises a conductive fiber cloth 1, wherein the upper end and the lower end of the conductive fiber cloth 1 are respectively coated with a special treatment layer 2, the lower end of the special treatment layer 2 is coated with an adhesive layer 3, the lower end of the adhesive layer 3 is coated with a release layer 4, the outer end of the conductive fiber cloth 1 is coated with two symmetrical ink layers 5, a storage bag 6 is embedded in the conductive fiber cloth 1, silver chloride powder 7 is filled in the storage bag 6, a plurality of uniformly distributed diversion ropes 8 are fixedly connected between the inner walls of the storage bag 6, the outer end of each diversion rope 8 is fixedly connected with a plurality of uniformly distributed balloons 9, the inner cavity of each balloon 9 is filled with a plurality of mutually abutted absolute magnetic powder 10, a magnet block 12 is arranged in each balloon 9, and two symmetrical fixing ropes 11 are fixedly connected between the magnet block 12 and the inner wall of each balloon 9, the bottom end in the conductive fiber cloth 1 is provided with the anti-edge warping device, in the use process of the device, when light irradiates on the surface of the conductive fiber cloth 1, the special processing layer 2 and the ink layer 5 perform preliminary shading and light absorption, so that the light is not easy to penetrate through the conductive fiber cloth 1, when the light irradiates into the storage bag 6 through the conductive fiber cloth 1, the silver chloride powder 7 and the light generate photolysis reaction, gradually change purple to black, further shield the light, so that the light is not easy to penetrate through the conductive fiber cloth 1, meanwhile, the silver chloride powder 7 photolysis generates chlorine and silver, the heat generated on the surface of the conductive fiber cloth 1 is uniformly dispersed, the heat of the direct-irradiation place of the light is reduced, spontaneous combustion phenomenon or scalding workers is not easy to generate due to overhigh temperature, and the balloon 9 is heated to expand due to the heat generated in the storage bag 6, so that the originally mutually abutted magnetic insulation powder 10 is gradually separated, magnetism is gived off to the external world to magnet piece 12, and a plurality of magnet pieces 12 mutual repulsion that make carry out the left and right rocking at storage bag 6 and rock, and the silver chloride powder 7 that will be in the bottom produces through rocking and removes can with the more abundant of light contact, improves the shading efficiency to light.

Referring to fig. 3-5, the edge-curling device includes a plurality of evenly-distributed extrusion boxes 14 fixedly connected to the inner bottom end of the conductive fiber cloth 1, an expansion bladder 15 fixedly connected to the inner top end of the extrusion boxes 14, a heat-conducting fiber 19 fixedly connected between the expansion bladder 15 and the material storage bag 6, the heat-conducting fiber 19 penetrating through the extrusion boxes 14, through holes 16 drilled at the lower ends of the extrusion boxes 14, valves 17 fixedly connected between the inner walls of the through holes 16, adhesives 18 filled in the extrusion boxes 14, the adhesives 18 located at the lower side of the expansion bladder 15, a plurality of evenly-distributed flow through holes 13 drilled at the lower end of the conductive fiber cloth 1, the flow through holes 13 corresponding to the through holes 16, when the surface of the material storage bag 6 generates heat due to light irradiation, the heat-conducting fiber 19 transfers the heat to the surface of the expansion bladder 15, so that the expansion bladder 15 is heated and expands downward, the adhesives 18 are extruded, the adhesives 18 flow through the valves 17 under the action of pressure to the flow through holes 13 to further bond with the adhesive surface, so that the conductive fiber cloth 1 is not easy to generate edge warping after being used for a long time.

Referring to fig. 2, a plurality of flame retardant particles 20 are uniformly distributed and embedded at the outer end of the special treatment layer 2, the flame retardant grade of the flame retardant particles 20 reaches UL-94V0, and by arranging the flame retardant particles 20, the special treatment layer 2 can prevent spontaneous combustion caused by overhigh surface temperature of the special treatment layer 2 in high-temperature weather for a long time, and the risk is reduced.

Referring to fig. 6, starch water glass 21 is sprayed between the conductive fiber cloth 1 and the special treatment layer 2, and by spraying the starch water glass 21, the stiffness of the conductive fiber cloth 1 and the special treatment layer 2 can be increased, and the interlayer bonding strength can be increased.

Referring to fig. 3, the ink layer 5 comprises 300 parts of ink, 35-60 parts of curing agent and 200 parts of ethyl acetate.

Referring to fig. 3, the upper end of the conductive fiber cloth 1 is coated with black conductive adhesive, and the black conductive adhesive comprises 150 parts of acrylic adhesive, 1.0-1.8 parts of curing agent, 40-60 parts of ink, 25-35 parts of conductive particles, and 40 parts of ethyl acetate.

Referring to fig. 2, the special treatment layer 2 is formed by uniformly mixing the following components in parts by weight: 150 portions of ink, 40 to 50 portions of toluene, 5 to 8 portions of mixed type polyisocyanate curing agent and 9 to 16 portions of organosilicon polymerization leveling agent.

Referring to fig. 5, the lower end of the expansion capsule 15 is fixedly connected with a plurality of uniformly distributed spheres, the spheres are members made of rod-like wax crystals, a contact angle between the spheres and the adhesive 18 is 180 degrees, and the spheres having a contact angle of 180 degrees with the adhesive 18 are arranged, so that a super-hydrophobic phenomenon is formed on the surface of the expansion capsule 15, and the adhesive 18 is in contact with the expansion capsule 15, is not easily adhered to the surface of the expansion capsule 15, and can fully utilize the adhesive 18.

Referring to fig. 4, the magnetic isolation powder 10 is made of Fe-Ni alloy material, the Ni content of Fe-Ni alloy is 80%, and by providing the Fe-Ni alloy material, the magnetic isolation powder 10 has higher magnetic permeability and excellent saturation performance, has smaller flexibility, is easier to manufacture than silicon steel, and enhances the magnetic isolation effect on the magnet block 12.

The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.