CN217204906U - Polyurea coating inhaul cable with middle bonding layer - Google Patents
Polyurea coating inhaul cable with middle bonding layer Download PDFInfo
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- CN217204906U CN217204906U CN202220899606.3U CN202220899606U CN217204906U CN 217204906 U CN217204906 U CN 217204906U CN 202220899606 U CN202220899606 U CN 202220899606U CN 217204906 U CN217204906 U CN 217204906U
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- polyurea coating
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- cable
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- 229920002396 Polyurea Polymers 0.000 title claims abstract description 104
- 239000011248 coating agent Substances 0.000 title claims abstract description 97
- 238000000576 coating method Methods 0.000 title claims abstract description 97
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 40
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 40
- 239000000843 powder Substances 0.000 claims description 31
- 239000000853 adhesive Substances 0.000 claims description 12
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 53
- 238000012360 testing method Methods 0.000 description 22
- 239000002245 particle Substances 0.000 description 9
- 239000002131 composite material Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 5
- 238000005507 spraying Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 238000010147 laser engraving Methods 0.000 description 1
- 238000010329 laser etching Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009757 thermoplastic moulding Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Ropes Or Cables (AREA)
Abstract
The utility model relates to a polyurea coating cable with middle tie coat, including the cable body, the supporting ground tackle of cable body and parcel at the cable body or/and the supporting ground tackle surface's of cable body polyurea coating, the cable body is outmost to be the HDPE sheath, be provided with middle tie coat between HDPE sheath surface or/and the supporting ground tackle surface of cable body and the polyurea coating. The utility model discloses a tie coat in the middle of polyurea coating and the cable body or the supporting ground tackle of cable body have the one deck, and this middle tie coat can produce stronger adhesion with the cable body or the supporting anchor of cable body, also has stronger adhesion with the polyurea coating. The main function of the middle bonding layer is to bond the cable body or the anchor structure matched with the cable body and the polyurea coating into a whole, so that the polyurea coating and the anchor matched with the cable body or the cable body can not be separated in the process of disc collection, transportation or construction, and the condition that the polyurea coating is folded, cracked or shed can not occur.
Description
Technical Field
The utility model relates to a prestressing force cable, in particular to polyurea coating cable with middle tie coat.
Background
The polyurea coating has excellent physical and chemical properties such as abrasion resistance, impact resistance, scratch resistance, water resistance, corrosion resistance and the like, and is widely applied to the fields of automobiles, buildings and the like. With the continuous development of polyurea coating technology, the polyurea coating is applied to prestressed inhaul cables in recent years, and can play a good protection role on the inhaul cables. However, in the current polyurea coating inhaul cable market, the polyurea coating has low bonding performance with the cable body, almost no bonding force exists, the polyurea coating only plays a role in wrapping and protecting the HDPE sheath of the cable body, and the polyurea coating does not really form a bonding whole with the cable body. The polyurea coating which is not really bonded with the cable body into a whole is easy to have the phenomena of coating surface folding, coating cracking, coating falling off and the like in the processes of cable body coiling, transportation, construction and the like, and loses the effect of protecting the cable body. The polyurea coating has small bonding force with the HDPE sheath of the cable body, and the reason for almost no bonding force is mainly the following points: 1. the surface tension of the HDPE sheath of the cable body is small, and the wetting capacity is poor; 2. the cable HDPE sheath has high polar molecules, high crystallinity and weak interface; 3. the rigid polyurea coating easy to spray has high curing speed and poor wetting property, and the adhesive force with metal, plastic, glass, leather, wood, concrete and the like is generally lower. Therefore, the structure of the inhaul cable needs to be improved to solve the problem of adhesion between the cable body and the polyurea coating.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: the polyurea coating inhaul cable with the intermediate bonding layer is provided, the intermediate bonding layer is arranged on the surface of an HDPE sheath of a cable body or/and between the surface of an anchorage device matched with the cable body and a polyurea coating, the bonding force of the cable body and the polyurea coating is effectively improved, and a series of problems caused by small bonding force of the polyurea coating and the HDPE sheath of the cable body are solved.
The technical scheme for solving the technical problems is as follows: the polyurea coating inhaul cable with the intermediate bonding layer comprises a cable body, a cable body matched anchorage device and a polyurea coating wrapped on the surface of the cable body or/and the cable body matched anchorage device, wherein the outermost layer of the cable body is an HDPE sheath, and the intermediate bonding layer is arranged between the surface of the HDPE sheath or/and the cable body matched anchorage device and the polyurea coating.
Furthermore, fine holes are etched on the surface of the HDPE jacket or/and the surface of the anchor matched with the cable body, the innermost layer of the polyurea coating is embedded into the fine holes, and the part of the polyurea coating embedded into the fine holes and the fine holes form an intermediate bonding layer together.
The aperture of the fine holes is 0.01mm-0.1 mm.
Furthermore, the surface of the HDPE jacket is embedded with fine powder in an extruding mode, the innermost layer of the polyurea coating is wrapped with the fine powder, and the part, wrapped with the fine powder, of the polyurea coating and the fine powder form an intermediate bonding layer together.
The fine powder has a size of 30-200 microns.
Further, the intermediate bonding layer is an adhesive chemical bonding layer.
The thickness of the chemical bonding layer of the adhesive is 0.1mm-0.2 mm.
The utility model discloses with polyurea coating cable on the present market the biggest difference be: an intermediate bonding layer is arranged between the polyurea coating and the cable body or the anchor matched with the cable body, and the intermediate bonding layer can generate stronger bonding force with the cable body or the anchor matched with the cable body and also has stronger bonding force with the polyurea coating. The main function of the middle bonding layer is to bond the cable body or the anchor structure matched with the cable body and the polyurea coating into a whole, so that the polyurea coating and the anchor matched with the cable body or the cable body can not be separated in the process of disc collection, transportation or construction, and the condition that the polyurea coating is folded, cracked or shed can not occur.
The technical features of a polyurea coating inhaul cable with an intermediate bonding layer according to the present invention will be further described with reference to the accompanying drawings and examples.
Drawings
FIG. 1: the utility model relates to a polyurea coating cable structure sketch map with middle tie coat.
FIG. 2: the utility model discloses embodiment 1 a polyurea coating cable structure sketch map with middle tie coat.
FIG. 3: the embodiment 2 of the utility model provides a polyurea coating cable structure sketch map with middle tie coat.
FIG. 4: the utility model discloses embodiment 3 a polyurea coating cable structure sketch map with middle tie coat.
FIG. 5: the utility model discloses state diagram when carrying out adhesion test.
Detailed Description
The utility model discloses a polyurea coating cable with middle tie coat, including the cable body, the supporting ground tackle of cable body and parcel at the supporting ground tackle surface of cable body or/and cable body polyurea coating 3, the cable body is outmost to be HDPE sheath 2, be provided with middle tie coat 1 (as shown in figure 1) between the supporting ground tackle surface of HDPE sheath surface or/and cable body and the polyurea coating.
The intermediate bonding layer has two main types, the first type is a physical bonding layer, and the second type is a composite adhesive layer. The bonding principle of the physical bonding layer is that the microscopic hole layer or the macroscopic particle layer is utilized to play a role in wrapping or inlaying the polyurea coating sprayed on the microscopic hole layer or the macroscopic particle layer, so that the bonding force is strong, and the bonding force can generally reach 30 to 70 percent of the strength of the matrix. Physical bond layers can be subdivided into microscopic fine pore bond layers and macroscopic embedded grain bond layers.
Example 1: a polyurea coating inhaul cable with an intermediate bonding layer comprises a cable body, an anchorage device matched with the cable body and a polyurea coating 3 wrapped on the surface of the cable body or/and the anchorage device matched with the cable body, wherein the outermost layer of the cable body is an HDPE sheath 1, the surface of the HDPE sheath or/and the surface of the anchorage device matched with the cable body is provided with the intermediate bonding layer 2 between the polyurea coating, namely, fine holes 4 are etched on the surface of the HDPE sheath or/and the surface of the anchorage device matched with the cable body, the innermost layer of the polyurea coating is embedded into the fine holes, and the part of the polyurea coating embedded into the fine holes and the fine holes form the intermediate bonding layer (as shown in figure 2).
In this embodiment, the pore diameter of the fine pores is 0.01mm to 0.1 mm. As a variation, the pore diameter of the fine pores can be adjusted according to actual conditions.
This example is a microscopic bond coat of a physical bond coat: the microcosmic bonding layer is formed by etching microcosmic fine holes on a cable body HDPE sheath or a cable body matched anchorage device by using a chemical corrosion method, a laser engraving method or a corona method, and the microcosmic fine holes enable non-bonded polyurea coating molecules with certain fluidity to enter the microcosmic holes and be embedded in the microcosmic holes through the vibration and electrostatic action when the polyurea coating is sprayed on the microcosmic fine holes. After the polyurea coating is hardened, polyurea molecules embedded in the holes cannot be easily drawn out because of being wrapped by the holes, so that the purpose of bonding is achieved.
Example 2: the utility model provides a polyurea coating cable with middle tie coat, includes the supporting ground tackle of the cable body, cable body and wraps up polyurea coating 3 in the cable body outside, the outmost HDPE sheath 1 that is of cable body, be provided with middle tie coat 2 between HDPE sheath surface and the polyurea coating, promptly HDPE sheath surface extrusion inlays and has fine and close powder, polyurea coating inlayer parcel fine and close powder 5, and the part of polyurea coating parcel fine and close powder constitutes middle tie coat jointly with fine and close powder.
In this example, the fine powder has a size of 30 to 200 microns. As an alternative, the size of the fine powder may be adjusted to the actual situation.
This example is a macroscopic bonding layer of a physical bonding layer: the macroscopic bonding layer is formed by pressing and embedding fine powder which can be metal powder, stone powder, HDPE powder and the like on the surface of the cable body when the HDPE sheath of the cable body is not hardened during the manufacturing of the cable body. The macroscopic powder particles are generally between tens of microns and hundreds of microns, half volume of the particles is embedded in the HDPE sheath, the other half of the particles is exposed outside, when the polyurea coating is sprayed on the exposed particles, the particles exposed outside the HDPE sheath are wrapped and buried by the polyurea coating, and after the polyurea coating is hardened, the particles play a role in connecting the HDPE sheath and the polyurea coating, so that the polyurea coating and the HDPE sheath are connected into a whole by the particles to play a bonding role.
Example 3: the polyurea coating inhaul cable with the intermediate bonding layer comprises a cable body, a cable body matched anchorage device and a polyurea coating 3 wrapping the surface of the cable body or/and the cable body matched anchorage device, wherein the outmost layer of the cable body is an HDPE sheath 1, the intermediate bonding layer 2 is arranged between the surface of the HDPE sheath or/and the cable body matched anchorage device and the polyurea coating, and the intermediate bonding layer is an adhesive chemical bonding layer 6. The adhesive chemical bonding layer is a chemical adhesive bonding layer which can be bonded with an anchorage device matched with an HDPE sheath or a cable body and can be bonded with polyurea coating. The bonding layer is a composite bonding layer, and besides the elastic all-purpose adhesive which has bonding force with the cable body, the anchor matched with the cable body and the polyurea coating, the bonding layer is also mixed with HDPE powder which is antioxidant, waterproof and can increase the strength of the bonding layer, so that the strength of the bonding layer is higher and the elasticity is better. Alternatively, the HDPE powder may be replaced by other plastic powder or stone powder, metal powder, etc.
In this embodiment, the thickness of the chemical bonding layer of the adhesive is 0.1mm to 0.2 mm. As a variation, the thickness of the adhesive chemical bonding layer may be adjusted to the actual situation.
Test method and procedure for adhesion test of intermediate adhesive layer.
Preparation of test tools and materials:
The test block 1 is not provided with an intermediate bonding layer, and the polyurea coating with the thickness of 2mm is directly sprayed on the surface with the length of 120mm and the width of 20mm of one surface to prepare the polyurea coating test block 1.
The test block 2 is processed by methods of laser etching, chemical reagent corrosion, corona treatment and the like, wherein the surface with the length of 120mm and the width of 20mm is processed, so that fine holes are formed on the surface, and the depth of the processed surface is less than or equal to 0.1 mm. And spraying polyurea coating with the thickness of 2mm on the treated surface to prepare a polyurea coating test block 2.
The test block 3 is prepared by heating a surface of 120mm long and 20mm wide by a baking lamp or hot air, ironing and the like until the surface is melted, uniformly spraying stone powder, iron powder, HDPE powder or their mixed powder on the melted surface, wherein the powder size is 30-200 microns, pressing the surface by a mold until the surface is cooled, and then spraying polyurea coating with the thickness of 2mm on the surface embedded with the powder to prepare the polyurea coating test block 3.
The test block 4 is evenly coated with a composite adhesive which is prepared by mixing elastic all-purpose glue which can be bonded with HDPE and polyurea and HDPE powder on the surface with the length of 120mm and the width of 20mm, and the thickness of the composite adhesive is less than or equal to 0.2 mm. And after the composite glue is solidified and hardened, spraying polyurea coating with the thickness of 2mm on the surface of the composite glue to prepare a polyurea coating test block 4.
One vice, one clamp block P2, one tension meter P3, one connecting rope and one scraping blade are prepared.
And (5) testing.
Clamping the test block 1 by a vice, completely exposing the surface sprayed with the polyurea coating, stripping the polyurea from one end of the test block by a doctor blade, wherein the length of the polyurea coating is about 50mm, clamping the stripped polyurea coating by a clamping block, connecting the clamping block with a tensiometer through a rope, pulling the tensiometer until the polyurea is completely stripped from the test block, and recording the peak value of the tensile force of the tensiometer at the moment as F1= 5.2N; repeating the steps, continuously carrying out the peeling test on the test block 2.3.4, and respectively recording the tension peak values as follows: f2= 75.4N; f3= 56.1N; f4= 61.6N;
3. analysis of test results
By analyzing the data of F1, F2, F3, F4, it was concluded that: the test block with the intermediate bonding layer has the bonding force of the polyurea coating which is more than 10 times that of the test block without the intermediate bonding layer.
The utility model discloses an advantage and characteristics: the bonding force between the cable body or the cable body matched anchorage device and the polyurea coating is increased, so that the cable body or the cable body matched anchorage device and the polyurea coating are bonded into a whole, the integral strength of the polyurea coating is improved, and the phenomena of failure such as cracking, wrinkling and falling are not easy to occur.
Claims (7)
1. The polyurea coating inhaul cable with the intermediate bonding layer comprises a cable body, a cable body matched anchorage device and a polyurea coating wrapped on the surface of the cable body or/and the cable body matched anchorage device, wherein the outermost layer of the cable body is an HDPE sheath, and the polyurea coating is characterized in that: and an intermediate bonding layer is arranged between the surface of the HDPE jacket or/and the surface of the anchor matched with the cable body and the polyurea coating.
2. The polyurea-coated pull cable having an intermediate bonding layer according to claim 1, wherein: fine holes are etched on the surface of the HDPE jacket or/and the surface of the anchor matched with the cable body, the innermost layer of the polyurea coating is embedded into the fine holes, and the part of the polyurea coating embedded into the fine holes and the fine holes form an intermediate bonding layer together.
3. The polyurea-coated pull cable having an intermediate bonding layer according to claim 2, wherein: the aperture of the fine holes is 0.01mm-0.1 mm.
4. The polyurea-coated pull cable having an intermediate bonding layer according to claim 1, wherein: the HDPE jacket surface is extruded and inlaid with fine powder, the polyurea coating innermost layer wraps the fine powder, and the part of the polyurea coating wrapping the fine powder and the fine powder form an intermediate bonding layer together.
5. The polyurea-coated pull cord with an intermediate bonding layer of claim 4, wherein: the fine powder has a size of 30-200 microns.
6. The polyurea-coated pull cable having an intermediate bonding layer according to claim 1, wherein: the intermediate bonding layer is an adhesive chemical bonding layer.
7. The polyurea-coated pull cable having an intermediate bonding layer according to claim 6, wherein: the thickness of the chemical bonding layer of the adhesive is 0.1mm-0.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220899606.3U CN217204906U (en) | 2022-04-18 | 2022-04-18 | Polyurea coating inhaul cable with middle bonding layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220899606.3U CN217204906U (en) | 2022-04-18 | 2022-04-18 | Polyurea coating inhaul cable with middle bonding layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217204906U true CN217204906U (en) | 2022-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220899606.3U Active CN217204906U (en) | 2022-04-18 | 2022-04-18 | Polyurea coating inhaul cable with middle bonding layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217204906U (en) |
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2022
- 2022-04-18 CN CN202220899606.3U patent/CN217204906U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A polyurea coating cable with an intermediate bonding layer Granted publication date: 20220816 Pledgee: China Everbright Bank Co.,Ltd. Liuzhou Branch Pledgor: LIUZHOU GUIQIAO CABLE Co.,Ltd. Registration number: Y2024450000027 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |