CN210736639U

CN210736639U - Multi-layer co-extrusion type anti-corrosion adhesive tape

Info

Publication number: CN210736639U
Application number: CN201921826064.1U
Authority: CN
Inventors: 齐登武; 吴卫均
Original assignee: Shenzhen Nikto Tape New Material Co ltd
Current assignee: Shenzhen Nikto Tape New Material Co ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-06-12
Anticipated expiration: 2029-10-28

Abstract

The multilayer co-extrusion type anti-corrosion adhesive tape comprises an anti-aging layer, an anticorrosive layer, a first heat insulation layer, a composite barrier layer, a second heat insulation layer, a first high-viscosity silica gel layer and a release layer which are sequentially stacked from top to bottom, wherein the anticorrosive layer is made of black HDPE (high-density polyethylene), the first heat insulation layer is made of glass fiber cloth, the second heat insulation layer is made of porous foaming material, the composite barrier layer is a multilayer co-extrusion film, the upper surface of the anti-aging layer can be further provided with a second high-viscosity silica gel layer, the first high-viscosity silica gel layer is tightly attached to the surface of a pipeline, the first heat insulation layer and the second heat insulation layer respectively prevent heat inside and outside the pipeline from diffusing, the anticorrosive layer blocks moisture, corrosive gas and light in the external environment from permeating, the anti-aging layer can prolong the service life of the anticorrosive layer, the composite barrier layer plays a role in blocking moisture and heat, Adhesion and protection properties.

Description

Multi-layer co-extrusion type anti-corrosion adhesive tape

Technical Field

The utility model relates to an it glues sticky tape technical field, especially relates to a multilayer coextrusion type anticorrosion sticky tape.

Background

An important process in the construction process of pipelines, equipment and the like is to perform anticorrosion treatment on the pipelines and equipment, such as pipelines or equipment arranged in chemical plants, sewage plants or the open air, and some heat-transfer pipelines or equipment also need to perform heat preservation or heat insulation treatment, such as pipelines for heating pipelines, pipelines for conveying cooling liquid or heat-transfer media and the like. The existing anticorrosion method is generally to spray a layer of anticorrosion paint, but the anticorrosion paint is generally only a thin layer, is easy to crack due to aging, expansion with heat and contraction with cold, and the like, and cannot play an effective anticorrosion role in some places, and the anticorrosion paint is difficult to play a role in heat insulation at the same time, and the internal and external temperature difference of a pipeline or equipment aggravates the chapping degree of the anticorrosion paint. In addition, the anti-corrosion coating cannot increase the pressure resistance of the pipeline and cannot play a role in protecting the pipeline from external force compression.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the shortcoming of above-mentioned prior art, providing one kind can carry out the cladding to equipment surfaces such as pipelines, realizes anticorrosive, thermal-insulated heat preservation, the anticorrosion sticky tape of functions such as external force protection.

The utility model discloses a realize through following technical scheme:

the utility model provides a multilayer coextrusion type anticorrosion sticky tape, from last to including the anti-aging layer, anticorrosive coating, first insulating layer, composite barrier layer, second insulating layer, first high glutinous silica gel layer and the release layer that stack gradually down, the anticorrosive coating is black HDPE material, first insulating layer is glass fiber cloth, the second insulating layer is porous expanded material, composite barrier layer is multilayer coextrusion membrane. When with sticky tape cladding pipeline, pipeline surface is hugged closely on first high glutinous silica gel layer, the inside heat of second insulating layer separation pipeline is not the outdiffusion, heat in the external environment of first insulating layer separation, moisture in the external environment of anticorrosive coating separation, corrosive gas, the infiltration of light, avoid with pipeline surface contact and corrode the pipeline, the ageing resistance layer sets up in the outside of anticorrosive coating, can improve the life of anticorrosive coating, composite barrier layer plays the second and says separation moisture, thermal effect.

The technical scheme of further improvement is that a second high-viscosity silica gel layer is further arranged on the upper surface of the anti-aging layer, and the second high-viscosity silica gel layer is in contact with the release layer when the adhesive tape is wound into a roll. Tearing from the type layer, can be with the sticky tape cladding on the pipeline, and the part that exposes outside still is the gluing component, has the stickness, can further adhesion insulation material, anticorrosive material or ornamental material etc. on it, like outdoor heating pipeline, can continue to twine the heat preservation cotton, the further cladding of pipeline in chemical industry workshop prevents static, anticorrosive material etc..

The further preferable technical scheme is that the anti-aging layer is made of SBS, SEBS, EVA, ethylene propylene rubber or styrene butadiene rubber. Materials having saturated bonds in the molecular chain are preferable, and weather resistance, heat resistance, and aging resistance can be improved.

The anti-aging layer is an anti-aging fiber woven layer or a fiber woven layer impregnated with an anti-aging stabilizer. The aging resistant fiber can be high molecular weight polyethylene fiber, polyamide fiber or glass fiber. Natural animal and plant fibers such as cotton and hemp and synthetic fibers such as viscose and acetate fibers with good absorptivity can also have good aging resistance after being impregnated with the anti-aging agent.

The further preferable technical scheme is that the anti-aging stabilizer is one of N, N '-diphenyl-p-phenylenediamine and 2, 2' -diaminodiphenyl sulfide.

The composite barrier layer is a three-layer co-extruded film with a structure of PE/PET/PE or a three-layer co-extruded film with a structure of PE/EVOH/PE, and the co-extruded film has excellent isolation performance. Other five-layer and seven-layer co-extruded films with barrier property can also be used.

Further preferably, the porous foaming material is a soft EVA, PU or EPE foaming material. The foaming material can also play a role in shock absorption and protection while insulating heat.

According to a further preferable technical scheme, the thickness of the first high-viscosity silica gel layer or/and the second high-viscosity silica gel layer is 30-100 μm. The high-viscosity silica gel layer is used as a bonding layer which is in direct contact with pipelines, equipment and the like, and has better bonding strength and heat resistance.

According to a further preferable technical scheme, the thickness of the second heat insulation layer is 50-300 mu m.

According to a further preferable technical scheme, the thickness of the first heat insulation layer is 50-300 mu m.

The anti-corrosion layer and the composite barrier layer in the utility model play a role of isolating external moisture, corrosive gas and liquid in a double way, thereby improving the anti-corrosion performance of the adhesive tape; the first heat insulation layer and the second heat insulation layer play double heat insulation roles, so that the adhesive tape has excellent heat insulation performance while being antiseptic, the first heat insulation layer is made of glass fiber materials, the strength is high, the heat insulation performance is good, the tensile strength of the adhesive tape is improved, the second heat insulation layer plays a good heat insulation role, and the second heat insulation layer has a certain buffering role while playing a good heat insulation role, so that mechanical damage caused by external force extrusion can be resisted; the anti-aging layer integrally prolongs the service life of the adhesive tape; the double-sided adhesive tape can be designed into a double-sided adhesive tape form, so that materials can be further adhered according to needs after coating to meet the use requirements.

Drawings

Fig. 1 is a schematic view of a layered structure according to embodiment 1 of the present invention.

Fig. 2 is a schematic view of a layered structure according to embodiment 2 of the present invention.

Fig. 3 is a schematic usage diagram of embodiment 2 of the present invention.

Reference numerals: 1-an anti-aging layer; 2-an anticorrosive layer; 3-a first insulating layer; 4-a composite barrier layer; 5-a second insulating layer; 6-a first high-viscosity silica gel layer; 7-a release layer; 8-a second highly viscous silica gel layer; 9-a pipeline; 10-adhesive tape.

Detailed Description

Example 1

The utility model provides a multilayer coextrusion type anticorrosion sticky tape, as shown in figure 1, from last to including layer 1, anticorrosive coating 2, first insulating layer 3, composite barrier layer 4, second insulating layer 5, first high glutinous silica gel layer 6 and from type layer 7 of stack gradually down, anticorrosive coating 2 is black HDPE material, first insulating layer 3 is glass fiber cloth, second insulating layer 5 is porous expanded material, composite barrier layer 4 is the multilayer membrane of coextruding. When with sticky tape cladding pipeline, pipeline surface is hugged closely on first high glutinous silica gel layer 6, the inside heat of 5 separation pipelines of second insulating layer is not the outdiffusion, the heat in the 3 separation external environment of first insulating layer, moisture in the 2 separation external environment of anticorrosive coating, corrosive gas, the infiltration of light, avoid with pipeline surface contact and the pipeline that corrodes, anti-aging layer 1 sets up the outside at anticorrosive coating 2, can improve anticorrosive coating 2's life, composite barrier layer 4 plays the second and says separation moisture, thermal effect.

The anti-aging layer 1 can be made of SBS, SEBS, EVA, ethylene propylene rubber or styrene butadiene rubber. Materials with saturated bonds on the molecular chain, such as SEBS, ethylene propylene rubber or styrene butadiene rubber, are preferred, so that weather resistance, heat resistance and ageing resistance can be improved.

Or, the anti-aging layer 1 is an anti-aging fiber braided layer, and the anti-aging fiber can be high molecular weight polyethylene fiber, polyamide fiber or glass fiber.

Alternatively, the anti-aging layer 1 is formed by impregnating a woven fiber layer with an anti-aging stabilizer, wherein the woven fiber layer is a woven or knitted fabric of natural animal and plant fibers such as cotton and hemp and synthetic fibers such as viscose and acetate fibers, which have good absorptivity, and has good anti-aging performance after being impregnated with the anti-aging agent. The anti-aging stabilizer is one of N, N '-diphenyl-p-phenylenediamine and 2, 2' -diaminodiphenyl sulfide.

The composite barrier layer 4 is a three-layer co-extrusion film with a structure of PE/EVOH/PE. Or the composite barrier layer 4 is a three-layer co-extrusion film with PE/PET/PE as a structure. Of course, other five-layer and seven-layer co-extruded films with barrier properties are also possible.

The porous foaming material is soft EVA, PU or EPE foaming material. The foaming material can also play a role in shock absorption and protection while insulating heat.

The thickness of the first high-viscosity silica gel layer is 30-100 μm. The thickness of the adhesive layer can be determined according to the specific application and environment, and if the thickness of the thermal insulation layer is increased to achieve excellent thermal insulation performance, the thickness of the high-viscosity silica gel layer should be increased correspondingly to increase cohesiveness. The high-viscosity silica gel layer has excellent adhesion performance and temperature resistance, and can not fall off when a heat medium is conveyed in pipelines and equipment, so that the adhesive tape can be firmly coated on the outer layer.

The thickness of the second heat insulation layer 5 is 50-300 mu m. The thickness of the first heat-insulating layer 3 is 50-300 mu m.

The utility model discloses a cladding on surfaces such as pipeline, equipment, it should be under construction according to actual service environment consequently, can carry out individual layer winding cladding in the pipeline outside, perhaps for further improving anticorrosive thermal-insulated effect, also can be in the outer multilayer winding parcel of pipeline.

Example 2

In order to further expand the utility model discloses the usage of sticky tape, on embodiment 1's basis, still be provided with the high glutinous silica gel layer of second 8 on anti-aging layer 1's the upper surface, when sticky tape winding lapping the high glutinous silica gel layer of second 8 with from type layer 7 contact.

When the pipeline winding machine is used, as shown in fig. 3, the release layer 7 is torn, the adhesive tape 10 can be coated on the pipeline 9, the exposed part is still an adhesive component and has viscosity, a heat-insulating material, an anticorrosive material or a decorative material and the like can be further adhered to the adhesive component, for example, an outdoor heating pipeline can be continuously wound with heat-insulating cotton, and a conveying pipeline of a chemical workshop is further coated with an antistatic and anticorrosive material and the like.

The above detailed description is specific to possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides a multilayer coextrusion type anticorrosion sticky tape, its characterized in that includes from last to down in proper order range upon range of anti-aging layer, anticorrosive coating, first insulating layer, composite barrier layer, second insulating layer, first high glutinous silica gel layer and release layer, the anticorrosive coating is black HDPE material, first insulating layer is glass fiber cloth, the second insulating layer is porous expanded material, composite barrier layer is multilayer coextrusion membrane.

2. The multi-layer co-extrusion anti-corrosion adhesive tape according to claim 1, wherein a second high-viscosity silica gel layer is further disposed on the upper surface of the anti-aging layer, and the second high-viscosity silica gel layer contacts with the release layer when the adhesive tape is wound into a roll.

3. The multi-layer co-extruded anticorrosion adhesive tape according to claim 1 or 2, wherein the anti-aging layer is SBS, SEBS, EVA, ethylene propylene rubber or styrene butadiene rubber material.

4. The multi-layer co-extruded anti-corrosion adhesive tape according to claim 1 or 2, wherein the anti-aging layer is an anti-aging fiber woven layer or a fiber woven layer impregnated with an anti-aging stabilizer.

5. The multi-layer co-extruded anticorrosion adhesive tape according to claim 4, wherein the anti-aging stabilizer is one of N, N '-diphenyl-p-phenylenediamine and 2, 2' -diaminodiphenyl sulfide.

6. The multi-layer co-extruded anticorrosion adhesive tape according to claim 1 or 2, wherein the composite barrier layer is a three-layer co-extruded film with a structure of PE/PET/PE or a three-layer co-extruded film with a structure of PE/EVOH/PE.

7. The multi-layer co-extruded anticorrosion adhesive tape according to claim 1 or 2, wherein the porous foaming material is a soft EVA, PU or EPE foaming material.

8. The multi-layer co-extrusion anti-corrosion adhesive tape according to claim 1 or 2, wherein the thickness of the first high-viscosity silica gel layer or/and the second high-viscosity silica gel layer is 30 to 100 μm.

9. The multi-layer co-extrusion anticorrosion adhesive tape according to claim 1 or 2, wherein the thickness of the second heat-insulating layer is 50-300 μm.

10. The multi-layer co-extrusion anticorrosion adhesive tape according to claim 1 or 2, wherein the thickness of the first heat-insulating layer is 50-300 μm.