CN113306228B - Coatable rubber wrapping belt for bridge cable and preparation method thereof - Google Patents
Coatable rubber wrapping belt for bridge cable and preparation method thereof Download PDFInfo
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- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/39—Thiocarbamic acids; Derivatives thereof, e.g. dithiocarbamates
- C08K5/40—Thiurams, i.e. compounds containing groups
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Abstract
The invention discloses a coatable rubber wrapping belt for a bridge cable, which comprises an outer rubber layer, a reinforced fiber layer and an inner rubber layer; the outer rubber layer and/or the inner rubber layer comprise the following components in parts by weight: 70-90 parts of chloroprene rubber, 10-30 parts of chlorosulfonated polyethylene rubber, 0-0.5 part of carbon black, 0-5 parts of terpene resin, 3-6 parts of a peroxide vulcanization system and 1-4 parts of an accelerator. The chloroprene rubber can endow the product with better polarity, the adhesion of the finish is improved, and the chlorosulfonated polyethylene can endow the product with better weather resistance; peroxide curing systems can impart lower curing temperatures to the product; the carbon black can increase the weather resistance of the wrapping belt while reinforcing; the terpene resin can enhance the adhesive force between the winding belt and the reinforced fiber cloth and enhance the adhesive force between the winding belt and the winding wire of the main cable. The invention also discloses a preparation method of the coatable rubber wrapping belt for the bridge cable, which is simple in process and convenient for realizing industrialization.
Description
Technical Field
The invention relates to the technical field of materials for bridge cables, in particular to a coatable rubber wrapping belt for bridge cables and a preparation method thereof.
Background
The cable bridge is one of the most important structural forms of modern large-span bridges, and the cable bridge type is often selected for construction when the modern bridge encounters large-span obstacles such as canyons, rivers and the like. The cable bridge is a bridge which takes a cable rope or a chain rope bearing tension as a main bearing component and consists of the cable rope, a cable tower, an anchorage, a suspender, a bridge deck and the like. Among them, the cable is a main load-bearing member, which is generally made of steel materials such as steel wires, steel strands, and steel cables having high tensile strength. In order to protect the cable and prolong the service life of the cable, a rubber wrapping tape is generally wrapped on the cable. However, the conventional wrapping tape for a cable has the following disadvantages:
(1) The physical properties such as tensile strength, elongation at break and the like are poor;
(2) The weather resistance is insufficient, and the vulcanization effect is poor;
(3) The surface can not be coated, dust is easy to be adsorbed, and the surface can not be renovated.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the coatable rubber wrapping belt for the bridge cable, which has the advantages of good vulcanization effect, excellent weather resistance, high tensile strength, high elongation at break and capability of coating finish on the surface.
The invention also aims to provide a preparation method of the coatable rubber wrapping belt for the bridge cable, which has simple process and is convenient for realizing industrialization.
One of the purposes of the invention is realized by adopting the following technical scheme:
a coatable rubber wrapping belt for a bridge cable comprises an outer rubber layer, a reinforced fiber layer and an inner rubber layer which are sequentially compounded from top to bottom; the outer rubber layer and/or the inner rubber layer comprise the following components in parts by weight: 70-90 parts of chloroprene rubber, 10-30 parts of chlorosulfonated polyethylene rubber, 0-0.5 part of carbon black, 0-5 parts of terpene resin, 3-6 parts of a peroxide vulcanization system and 1-4 parts of an accelerator.
Further, the peroxide curing system is composed of 2-4 parts of magnesium oxide and 1-2 parts of 1, 1-bis (t-butylperoxy) -3, 5-trimethylcyclohexane.
Further, the accelerator consists of 1-2 parts of dipentamethylenethiuram tetrasulfide and 0.5-2 parts of ethylene thiourea.
Further, the outer rubber layer and/or the inner rubber layer comprise the following components in parts by weight: 70-90 parts of chloroprene rubber, 10-30 parts of chlorosulfonated polyethylene rubber, 0.1-0.5 part of carbon black, 0.1-5 parts of terpene resin, 3-6 parts of a peroxide vulcanization system and 1-4 parts of an accelerator.
Further, the outer rubber layer and/or the inner rubber layer further comprise the following components in parts by weight: 25-50 parts of barium sulfate, 5-10 parts of talcum powder, 10-40 parts of titanium dioxide, 2-10 parts of plasticizer, 1-4 parts of PEG, 0-1 part of antioxidant, 0-1 part of anti-aging agent, 0-1 part of ultraviolet absorbent and 1-3 parts of silane coupling agent.
Further, the outer rubber layer and the inner rubber layer are both prepared from the following components in parts by weight: 70-90 parts of chloroprene rubber, 10-30 parts of chlorosulfonated polyethylene rubber, 2-4 parts of magnesium oxide, 1-bis (tert-butylperoxy) -3, 5-trimethylcyclohexane, 1-2 parts of dipentaerythritol tetrasulfide, 0.5-2 parts of ethylene thiourea, 25-50 parts of barium sulfate, 5-10 parts of talcum powder, 10-40 parts of titanium dioxide, 0.1-0.5 part of carbon black, 2-10 parts of plasticizer, 1-4 parts of PEG 4000, 0.1-1 part of antioxidant, 0.1-1 part of anti-aging agent, 0.1-1 part of ultraviolet absorbent, 0.1-5 parts of terpene resin and 1-3 parts of silane coupling agent.
Furthermore, the reinforced fiber layer is a polyester fiber mesh fabric layer, an aramid fiber mesh fabric layer, a carbon fiber mesh fabric layer, a polyester fiber plain weave layer, an aramid fiber plain weave layer or a carbon fiber plain weave layer.
Further, a fluorocarbon resin surface layer is coated on the outer rubber layer.
The second purpose of the invention is realized by adopting the following technical scheme:
a preparation method of a coatable rubber wrapping belt for a bridge cable comprises the following steps:
an outer rubber layer preparation step: mixing the components of the outer layer rubber according to the formula amount to obtain an outer layer rubber compound;
preparing an inner rubber layer: mixing the components of the inner layer rubber according to the formula amount to obtain inner layer rubber compound;
a forming step: taking the reinforced fiber, and integrally forming the reinforced fiber, the outer layer mixed rubber and the inner layer mixed rubber through a 4-roll calendar to form a wrapping belt comprising an outer layer rubber layer, a reinforced fiber layer and an inner layer rubber layer.
And further comprising a pressure vulcanization step and a coating step, wherein after the wrapped belt is subjected to pressure vulcanization, fluorocarbon resin coating is performed on the outer rubber layer, the coating frequency is 2 times, and the total coating thickness is more than or equal to 60 mu m.
Compared with the prior art, the invention has the beneficial effects that:
(1) The coatable rubber wrapping belt for the bridge cable, provided by the invention, has the advantages that the outer rubber layer and/or the inner rubber layer are/is the chlorosulfonated polyethylene modified chloroprene rubber layer, the chloroprene rubber can endow a product with better polarity, the adhesion of a finish paint is improved, and the chlorosulfonated polyethylene can endow the product with better weather resistance. Meanwhile, the peroxide curing system can endow the product with lower curing temperature, and can realize curing within the range of 120-150 ℃; the carbon black is added to reinforce and increase the weather resistance of the wrapping belt; the terpene resin is added, so that the adhesion between the wrapping belt product and the reinforced fiber cloth is stronger, good adhesion can be formed between the wrapping belt and the main cable wrapping wires, and the product can play a better anti-corrosion role. In addition, the middle layer of the wrapping belt is a reinforced fiber layer, so that the whole product is well reinforced.
(2) The preparation method of the coatable rubber wrapping belt for the bridge cable, provided by the invention, has a simple process and is convenient for realizing industrialization.
Drawings
Figure 1 is a cross-sectional view of a wrapping tape provided in accordance with an embodiment of the present invention;
fig. 2 is a production flow chart of a wrapping tape according to an embodiment of the present invention.
In the figure: 1. an outer rubber layer; 2. a reinforcing fiber layer; 3. an inner rubber layer; 11. mixing rubber at the outer layer; 21. Reinforcing fiber cloth; 31. inner layer rubber compound; 4. and (5) winding a wrapping belt.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict. The raw materials, equipments and the like used in the following examples are commercially available unless otherwise specified.
As shown in figure 1, the coatable rubber wrapping belt 4 for the bridge cable comprises an outer rubber layer 1, a reinforced fiber layer 2 and an inner rubber layer 3 which are sequentially compounded from top to bottom; the outer rubber layer 1 and/or the inner rubber layer 3 comprise the following components in parts by weight: 70-90 parts of chloroprene rubber, 10-30 parts of chlorosulfonated polyethylene rubber, 0-0.5 part of carbon black, 0-5 parts of terpene resin, 3-6 parts of a peroxide vulcanization system and 1-4 parts of an accelerator. The chloroprene rubber can endow the product with better polarity, the adhesion of the finish is improved, and the chlorosulfonated polyethylene can endow the product with better weather resistance. Meanwhile, the peroxide curing system can endow the product with lower curing temperature, the curing effect is good, and the self-curing reaction can be continuously generated in the using process of the wrapping belt, so that the compressive strength is improved; the carbon black is added to reinforce and increase the weather resistance of the wrapping belt; the terpene resin is added, so that the adhesion between the wrapping belt product and the reinforced fiber cloth 21 is stronger, good adhesion can be formed between the wrapping belt and the main cable winding wires, and the product can play a better anti-corrosion role. In addition, the middle layer of the wrapping belt is a reinforced fiber layer 2, which has good reinforcing effect on the whole product.
As a preferred embodiment, the peroxide cure system is comprised of 2-4 parts magnesium oxide and 1-2 parts 1, 1-bis (t-butylperoxy) -3, 5-trimethylcyclohexane. The peroxide vulcanizing agent 1, 1-bis (tert-butylperoxy) -3, 5-trimethylcyclohexane endows the product with lower vulcanizing temperature, can realize vulcanization in the range of 120-150 ℃, and the surface of a wrapping belt after vulcanization can completely eliminate spiral lines, so that the surface of a main cable is smooth and has better flatness. In addition, the peroxide sulfide system can enable the wrapping belt to continuously generate self-sulfur reaction in the using process, so that the compression strength is improved.
As a preferred embodiment, the accelerator consists of 1-2 parts of dipentamethylenethiuram tetrasulfide DPTT and 0.5-2 parts of ethylene thiourea NA-22, the vulcanization efficiency of chlorosulfonated polyethylene can be improved by matching DPTT with magnesium oxide, and the vulcanization efficiency of chloroprene rubber can be improved by the synergistic action of NA-22 and a peroxide vulcanizing agent.
As a preferred embodiment, the outer rubber layer 1 and/or the inner rubber layer 3 comprise the following components in parts by weight: 70-90 parts of chloroprene rubber, 10-30 parts of chlorosulfonated polyethylene rubber, 0.1-0.5 part of carbon black, 0.1-5 parts of terpene resin, 3-6 parts of a peroxide vulcanization system and 1-4 parts of an accelerator.
As a preferred embodiment, the outer rubber layer 1 and/or the inner rubber layer 3 further comprises the following components in parts by weight: 25-50 parts of barium sulfate, 5-10 parts of talcum powder, 10-40 parts of titanium dioxide, 2-10 parts of plasticizer, 1-4 parts of PEG, 0-1 part of antioxidant, 0-1 part of anti-aging agent, 0-1 part of ultraviolet absorbent and 1-3 parts of silane coupling agent.
As a preferred embodiment, the outer rubber layer 1 and the inner rubber layer 3 are each prepared from the following components in parts by weight: 70-90 parts of chloroprene rubber, 10-30 parts of chlorosulfonated polyethylene rubber, 2-4 parts of magnesium oxide, 1-bis (tert-butylperoxy) -3, 5-trimethylcyclohexane, 1-2 parts of dipentaerythritol tetrasulfide, 0.5-2 parts of ethylene thiourea, 25-50 parts of barium sulfate, 5-10 parts of talcum powder, 10-40 parts of titanium dioxide, 0.1-0.5 part of carbon black, 2-10 parts of plasticizer, 1-4 parts of PEG 4000, 0.1-1 part of antioxidant, 0.1-1 part of anti-aging agent, 0.1-1 part of ultraviolet absorbent, 0.1-5 parts of terpene resin and 1-3 parts of silane coupling agent.
In a preferred embodiment, the reinforcing fiber layer 2 is a polyester fiber scrim layer, an aramid fiber scrim layer, a carbon fiber scrim layer, a polyester fiber scrim layer, an aramid fiber scrim layer, or a carbon fiber scrim layer. The reinforced fiber layer 2 is arranged in the middle of the wrapping belt, so that the whole product is reinforced, and the service life is prolonged.
In a preferred embodiment, the outer rubber layer 1 is coated with a fluorocarbon resin surface layer. The surface of the wrapping belt can be coated with finish paint, so that the problems that the existing wrapping belt is poor in coating property, dirt is easily adsorbed on the surface, the wrapping belt cannot be cleaned and refreshed and other stubborn diseases can be solved. And moreover, the weather resistance of the product can be further improved by coating the finish paint on the surface of the wrapping belt, and a user can carry out periodical scouring maintenance according to the aging condition of the finish paint.
As a preferred embodiment, the total thickness of the fluorocarbon resin surface layer is 60 μm or more, the fluorocarbon resin can be purchased on the market, and the fluorocarbon resin is preferably FEVE, including but not limited to Heiher Rainbow brand paint, zondon brand paint, acksonobel brand paint, and the like.
In a preferred embodiment, the total thickness of the wrapping tape is about 1.6mm, wherein the thickness of the inner rubber layer 3 is 0.6mm, the thickness of the reinforcing fiber layer 2 is 0.4mm, and the thickness of the outer rubber layer 1 is 0.6mm.
The coatable rubber wrapping belt for the bridge cable provided by the embodiment of the invention has the advantages of low vulcanization temperature, strong polarity, high surface energy and the like, and has great market potential.
As shown in fig. 2, a method for preparing a coatable rubber wrapping tape for a bridge cable comprises the following steps:
the preparation step of the outer rubber layer 1 comprises the following steps: mixing the components of the outer layer rubber according to the formula amount to obtain an outer layer rubber compound 11;
the preparation step of the inner rubber layer 3 is as follows: mixing the components of the inner layer rubber according to the formula amount to obtain inner layer rubber compound 31;
a molding step: the reinforcing fiber, the outer layer rubber compound 11 and the inner layer rubber compound 31 are integrally formed by a 4-roll calendar (as shown in fig. 2, the 4 rolls are roll a, roll B, roll C and roll D, respectively) to form a wrapping tape 4 including an outer layer rubber layer 1, a reinforcing fiber layer 2 and an inner layer rubber layer 3.
As shown in fig. 2, during the production of the wrapping tape, the outer layer rubber and the inner layer rubber are respectively made into mixed rubber according to corresponding formulations, the reinforced fiber cloth 21 is taken, and then the mixed rubber is once formed through a 4-roll calendar according to the process of fig. 2, so as to prefabricate the wrapping tape 4 with a specific thickness. At the moment, the preformed wrapping belt is a semi-finished product, is an unvulcanized rubber product, has certain viscosity at normal temperature, and needs to be rolled by using isolation paper for packaging. Compared with the conventional wrapping belt, the wrapping belt provided by the embodiment of the invention is packaged in a non-vulcanized state without being pre-vulcanized in a factory, and is vulcanized when in use, so that the production flow is simplified, and the production efficiency is improved.
In a preferred embodiment, the method further comprises a pressure vulcanization step and a coating step, wherein after the pressure vulcanization step is carried out on the wrapping belt, fluorocarbon resin coating is carried out on the outer rubber layer 1, the coating frequency is 2 times, and the total coating thickness is more than or equal to 60 mu m. After casting and forming, the vulcanization operation can be carried out in a factory, the vulcanized wrapping belt has good crosslinking degree and no stickiness on the surface, and the wrapping belt does not need to use isolation paper during packaging. The surface of the vulcanized wrapping tape can be coated, such as with fluorocarbon resin, and the fluorocarbon resin is preferably FEVE. Thereby solving the problems that the prior coating property is poor, the surface is easy to adsorb dust to cause dirt, and the cleaning and the renovation can not be carried out. And moreover, the weather resistance of the cable rubber belt can be further improved by coating finish paint on the surface of the wrapping belt, and periodic scouring maintenance can be carried out according to the aging condition of the finish paint.
Examples 1 to 4
A rubber wrapping belt capable of being coated for a bridge cable comprises an outer rubber layer 1, a reinforcing fiber layer 2 and an inner rubber layer 3 which are sequentially compounded from top to bottom, wherein fluorocarbon resin finish paint is sprayed on the surface of the outer rubber layer 1, the fluorocarbon resin is FEVE, and the coating thickness is 60 micrometers. The outer rubber layer 1 and the inner rubber layer 3 have the same formula and are prepared from chloroprene rubber, chlorosulfonated polyethylene rubber, magnesium oxide, 1-bis (tert-butylperoxy) -3, 5-trimethylcyclohexane, dipentaerythritol tetrasulfide, ethylene thiourea, barium sulfate, talcum powder, titanium dioxide, carbon black, a plasticizer, PEG 4000, an antioxidant, an anti-aging agent, an ultraviolet absorbent, terpene resin and a silane coupling agent, and the specific formula is shown in the following table 1. The fluorocarbon resin of example 1 was obtained from aksunobel company; the fluorocarbon resin of example 2 was purchased from haihong old brand company; the fluorocarbon resin of example 3 was purchased from aksunobel corporation; the fluorocarbon resin of example 4 was purchased from zolndon paint company.
Table 1 examples 1-4 formulation tables for outer rubber layer 1 and inner rubber layer 3
The coatable rubber wrapping tapes for bridge cables of examples 1-4 were prepared as follows:
preparing an outer rubber layer 1: mixing the components of the outer layer rubber according to the formula amount to obtain an outer layer rubber compound 11;
preparing an inner rubber layer 3: mixing the components of the inner rubber according to the formula amount to obtain inner rubber compound 31;
molding: taking the polyester fiber mesh cloth, integrally forming the polyester fiber mesh cloth, the outer layer rubber compound 11 and the inner layer rubber compound 31 through a 4-roll calender to form a semi-finished product of a wrapping belt, wherein the semi-finished product comprises an outer layer rubber layer 1 (the thickness is 0.6 mm), a reinforced fiber layer 2 (the thickness is 0.4 mm) and an inner layer rubber layer 3 (the thickness is 0.6 mm);
and (3) vulcanization coating: and (3) after the semi-finished product of the wrapping belt is subjected to pressure vulcanization, coating fluorocarbon resin on the surface of the outer rubber layer 1 for 2 times, wherein the total coating thickness is more than or equal to 60 mu m.
Comparative example 1
Comparative example l differs from example 3 in that: the sulfiding agent comprises only 4 parts of magnesium oxide and does not comprise 1, 1-bis (t-butylperoxy) -3, 5-trimethylcyclohexane.
Comparative example 2
Comparative example 2 differs from example 3 in that: the accelerator included only the ethylene thiourea NA-22 parts and not the dipentamethylenethiuram tetrasulfide DPTT.
Comparative example 3
Comparative example 3 differs from example 3 in that: the dosage of the chloroprene rubber is 100 parts, and the dosage of the chlorosulfonated polyethylene rubber is 8 parts.
Comparative example 4
Comparative example 4 differs from example 3 in that: the dosage of the chloroprene rubber is 60 parts, and the dosage of the chlorosulfonated polyethylene rubber is 40 parts.
Comparative example 5
Comparative example 5 differs from example 3 in that: the carbon black component was not included, and the remaining components and amounts were the same as in example 3.
Comparative example 6
Comparative example 6 differs from example 3 in that: the terpene resin component was not included, and the remaining components and amounts were the same as in example 3.
Effect testing
The vulcanization times for the outer layer rubbers of examples 1-4 and comparative examples 1-6 were recorded, with the time points recorded as 10% vulcanization (TC 10) and 90% vulcanization (TC 90). And testing the tensile strength and the elongation at break of the vulcanized wrapping belt according to the GB/T528-2009 determination of the tensile stress strain performance of vulcanized rubber or thermoplastic rubber. And testing the adhesive force of the fluorocarbon finish paint after the fluorocarbon finish paint is cured for 24 hours, wherein the testing method is based on a GB-T5210-2006 paint and varnish pull-off method adhesive force test.
TABLE 2 TABLE FOR PERFORMANCE TEST RESULTS OF EXAMPLES 1-4 AND COMPARATIVE EXAMPLES 1-7 WINDING TAPE
As can be seen from the record in Table 2, the performance of the outer rubber of examples 1-4 is better than that of the rubber of comparative examples 1-7, the outer layer and the inner layer of the wrapping tape of examples 1-7 are all chlorosulfonated polyethylene modified chloroprene rubber layers, the chloroprene rubber can endow the product with better polarity, the adhesion of the finish paint is improved, and the chlorosulfonated polyethylene can endow the product with better weather resistance. Meanwhile, a magnesium oxide and peroxide vulcanization system is adopted, a peroxide vulcanizing agent 1, 1-bis (tert-butylperoxy) -3, 5-trimethylcyclohexane vulcanizing agent endows the product with lower vulcanization temperature, the vulcanization effect is good, and the wrapping belt can continuously generate self-vulcanization reaction in the use process, so that the compression strength is improved; the carbon black can enhance the weather resistance of the wrapping tape while reinforcing the product; the terpene resin is added, so that the adhesive force between the wrapping belt product and the reinforced fiber cloth 21 is stronger, good adhesive force can be formed between the wrapping belt and the main cable wrapping wire, and the product can play a better anti-corrosion role.
The curing agent of comparative example 1 comprised only 4 parts of magnesium oxide and did not comprise 1, 1-bis (t-butylperoxy) -3, 5-trimethylcyclohexane, and the cure time was extended compared to the examples, demonstrating that the magnesium oxide, peroxide curing agent 1, 1-bis (t-butylperoxy) -3, 5-trimethylcyclohexane) of the examples of the invention was synergistically effective, enabling shorter cure times and superior performance of the article. Also, the change of the vulcanizing agent of comparative example 1 causes the tensile strength, elongation at break and adhesion of the product to be lowered compared to the examples.
The accelerator of comparative example 2 comprises only ethylenethiourea NA-22 and does not comprise dipentamethylenethiuram tetrasulfide DPTT, and the vulcanization time is prolonged as compared with that of the examples, in the formulation of the examples, DPTT is compounded with magnesium oxide to improve the vulcanization efficiency of chlorosulfonated polyethylene, and NA-22 synergistically acts with a peroxide vulcanizing agent to improve the vulcanization efficiency of chloroprene rubber. It can be seen that the two-component curative and two-component accelerator of the examples of the present invention act synergistically.
Comparative examples 3 and 4 are different from the examples in the amount of chloroprene rubber and chlorosulfonated polyethylene rubber. As can be seen from the test results, the adhesion of comparative examples 3 to 4 was greatly reduced, the vulcanization time was relatively prolonged, and the tensile strength and elongation at break were inferior to those of the examples. Therefore, the embodiment of the invention controls the proportion of the two main rubbers within a reasonable range, the chloroprene rubbers endow the products with better polarity, the adhesion force of the finish paint is improved, and the chlorosulfonated polyethylene endows the products with better weather resistance.
Comparative example 5 does not contain a carbon black component, comparative example 6 does not contain a terpene resin component, the test results of comparative examples 5 to 6 are inferior to those of examples, carbon black can perform a reinforcing function, and the terpene resin can improve the adhesive force and weather resistance of the product.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are intended to be covered by the claims.
Claims (7)
1. A bridge cable rope is with coating rubber twines and takes, characterized by that, including upper and lower sequentially compounded outer rubber layer, reinforced fiber layer and inner rubber layer; the outer rubber layer and/or the inner rubber layer comprise the following components in parts by weight: 70-90 parts of chloroprene rubber, 10-30 parts of chlorosulfonated polyethylene rubber, 0.1-0.5 part of carbon black, 0.1-5 parts of terpene resin, 3-6 parts of a peroxide vulcanization system and 1-4 parts of an accelerator; the peroxide vulcanization system consists of 2-4 parts of magnesium oxide and 1-2 parts of 1, 1-bis (tert-butylperoxy) -3, 5-trimethylcyclohexane; the accelerator consists of 1-2 parts of dipentamethylenethiuram tetrasulfide and 0.5-2 parts of ethylene thiourea.
2. The coatable rubber wrapping tape for bridge cables as claimed in claim 1, wherein the outer rubber layer and/or the inner rubber layer further comprises the following components in parts by weight: 25-50 parts of barium sulfate, 5-10 parts of talcum powder, 10-40 parts of titanium dioxide, 2-10 parts of plasticizer, 1-4 parts of PEG, 0-1 part of antioxidant, 0-1 part of anti-aging agent, 0-1 part of ultraviolet absorbent and 1-3 parts of silane coupling agent.
3. The coatable rubber wrapping tape for bridge cables as claimed in claim 1, wherein the outer rubber layer and the inner rubber layer are prepared from the following components in parts by weight: 70-90 parts of chloroprene rubber, 10-30 parts of chlorosulfonated polyethylene rubber, 2-4 parts of magnesium oxide, 1-bis (tert-butylperoxy) -3, 5-trimethylcyclohexane, 1-2 parts of dipentaerythritol tetrasulfide, 0.5-2 parts of ethylene thiourea, 25-50 parts of barium sulfate, 5-10 parts of talcum powder, 10-40 parts of titanium dioxide, 0.1-0.5 part of carbon black, 2-10 parts of plasticizer, 01-4 parts of PEG 400, 0.1-1 part of antioxidant, 0.1-1 part of anti-aging agent, 0.1-1 part of ultraviolet absorbent, 0.1-5 parts of terpene resin and 1-3 parts of silane coupling agent.
4. The coatable rubber-wrapped and taped cable for bridge cable according to claim 1, wherein the reinforcing fiber layer is a polyester fiber scrim layer, an aramid fiber scrim layer, a carbon fiber scrim layer, a polyester fiber scrim layer, an aramid fiber scrim layer, or a carbon fiber scrim layer.
5. The coatable rubber wrapping tape for bridge cables of claim 1 wherein the outer rubber layer is coated with a fluorocarbon resin finish.
6. A method of preparing a coatable rubber wrapping tape for a bridge cable as claimed in any one of claims 1 to 4 comprising the steps of:
preparing an outer rubber layer: mixing the components of the outer layer rubber according to the formula amount to obtain outer layer rubber compound;
preparing an inner rubber layer: mixing the components of the inner layer rubber according to the formula amount to obtain inner layer rubber compound;
a forming step: taking the reinforced fiber, and integrally forming the reinforced fiber, the outer layer mixed rubber and the inner layer mixed rubber through a 4-roll calendar to form a wrapping belt comprising an outer layer rubber layer, a reinforced fiber layer and an inner layer rubber layer.
7. The method for preparing the coatable rubber wrapping belt for the bridge cable according to claim 6, further comprising a pressure vulcanization step and a coating step, wherein after the pressure vulcanization step is carried out on the wrapping belt, fluorocarbon resin coating is carried out on the outer rubber layer, the coating frequency is 2 times, and the total coating thickness is more than or equal to 60 μm.
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| CN117626802B (en) * | 2023-10-30 | 2024-08-16 | 中交公路长大桥建设国家工程研究中心有限公司 | Expansion type bridge cable fireproof wrapping belt and manufacturing and installing methods |
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| CN104877244A (en) * | 2015-06-10 | 2015-09-02 | 深圳市佳宝金有限公司 | Compound rubber protective belt for bridge, preparation method and application thereof |
| CN108102173A (en) * | 2017-12-26 | 2018-06-01 | 太仓冠联高分子材料有限公司 | A kind of rubber tube of automobile fuel oil outer layer glue |
| CN110126367A (en) * | 2019-04-24 | 2019-08-16 | 镇江蓝舶科技股份有限公司 | A kind of be wrapped band and its manufacture and winding construction method containing flexible fluorocarbon material |
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| WO2013040666A1 (en) * | 2011-09-23 | 2013-03-28 | Planideia Confecção De Vestuário De Proteção Ltda. - Epp | Radiopaque carbon-carbon linked elastomeric materials, preparation method and uses of same |
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Patent Citations (3)
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|---|---|---|---|---|
| CN104877244A (en) * | 2015-06-10 | 2015-09-02 | 深圳市佳宝金有限公司 | Compound rubber protective belt for bridge, preparation method and application thereof |
| CN108102173A (en) * | 2017-12-26 | 2018-06-01 | 太仓冠联高分子材料有限公司 | A kind of rubber tube of automobile fuel oil outer layer glue |
| CN110126367A (en) * | 2019-04-24 | 2019-08-16 | 镇江蓝舶科技股份有限公司 | A kind of be wrapped band and its manufacture and winding construction method containing flexible fluorocarbon material |
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Effective date of registration: 20230714 Address after: 511442 Room 101, No. 4, 1st lane, xiner street, Zhizhuang south, Nancun Town, Panyu District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Kaibo Bridge Engineering Co.,Ltd. Patentee after: Guangzhou Cable New Material Technology Co.,Ltd. Address before: 239, area B, 2nd floor, No.3, Shengtang Industrial Zone, Cencun, Tianhe District, Guangzhou, Guangdong 510630 (office only) Patentee before: Guangzhou Cable New Material Technology Co.,Ltd. |