CN109775243B - Cold-resistant flame-retardant covering rubber, cold-resistant flame-retardant intermediate rubber, cold-resistant flame-retardant core rubber and cold-resistant flame-retardant steel wire rope core conveying belt - Google Patents
Cold-resistant flame-retardant covering rubber, cold-resistant flame-retardant intermediate rubber, cold-resistant flame-retardant core rubber and cold-resistant flame-retardant steel wire rope core conveying belt Download PDFInfo
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Abstract
The invention provides a cold-resistant flame-retardant covering adhesive, which comprises: 0-20 parts of natural rubber; 60-80 parts of styrene butadiene rubber; 20-30 parts of butadiene rubber; 3-6 parts of zinc oxide; 0-2 parts of stearic acid; 1-2 parts of an accelerator; 2-4 parts of an anti-aging agent; 1-2 parts of paraffin; 1.5-3 parts of sulfur; 3-8 parts of antimony trioxide; 5-12 parts of chlorinated paraffin; 50-90 parts of a solid flame retardant; 10-15 parts of a flame-retardant lubricant; 35-45 parts of carbon black. The cold-resistant flame-retardant covering rubber provided by the invention has good cold-resistant flame-retardant property under the comprehensive action of specific components and component contents, can ensure the flame-retardant property of rubber materials, can ensure that the rubber materials do not become hard and brittle at the low temperature of-60 ℃, is crack-resistant, and can prolong the service life of a conveying belt. The invention also provides a cold-resistant flame-retardant intermediate adhesive, a cold-resistant flame-retardant core adhesive and a cold-resistant flame-retardant steel wire rope core conveying belt.
Description
Technical Field
The invention relates to the technical field of conveying belts, in particular to a cold-resistant flame-retardant covering rubber, a cold-resistant flame-retardant intermediate rubber, a cold-resistant flame-retardant core rubber and a cold-resistant flame-retardant rope core conveying belt.
Background
The steel wire rope core flame-retardant conveying belt is a main conveying tool in a coal mine, executes the standard of MT668-2008 'steel wire rope core flame-retardant conveying belt for the coal mine', has flame retardance and antistatic performance, and is not cold-resistant. At present, large and super-huge mines, modern mine ports, open-pit coal mines and iron ore transportation systems are built in China, and high-strength steel wire rope core conveying belts are almost adopted as conveying modes of solid materials. The allowable environment temperature range of the steel wire rope core conveying belt in the prior art is-10-40 ℃, when the temperature is lower than-10 ℃, the covering glue can be hardened and slipped, the elasticity and the grooving performance of the conveying belt are reduced, and the conveying effect and the service life are influenced. When the environmental temperature is lower than minus 30 ℃, the covering rubber becomes brittle and cracked rapidly, the adhesive force between the steel wire rope and the rubber is greatly reduced, and the conveying effect and the service life are seriously influenced. However, in the northeast and northwest regions of our country, and even in the cold russian region, temperatures are often below-40 ℃ or even below-60 ℃ from one winter to the next. Therefore, the conveying belt which has high strength, is suitable for long distance, large transportation volume and is cold-resistant is urgently needed in some mine projects in northeast regions of China and Russia and other regions. Therefore, the development of a cold-resistant flame-retardant steel wire rope core conveying belt for solving the problem of material conveying difficulty in winter in northeast, northwest, Russia and other areas of China is a hot point developed by technical personnel in the field.
Disclosure of Invention
In view of the above, the invention aims to provide a cold-resistant flame-retardant steel wire rope core conveyor belt which has good cold resistance.
The invention provides a cold-resistant flame-retardant covering adhesive which comprises the following components in parts by weight:
a is more than or equal to 0 and less than or equal to 20;
60-80 parts of styrene butadiene rubber;
20-30 parts of butadiene rubber;
3-6 parts of zinc oxide;
b is stearic acid, wherein B is more than 0 and less than or equal to 2;
1-2 parts of an accelerator;
2-4 parts of an anti-aging agent;
1-2 parts of paraffin;
1.5-3 parts of sulfur;
3-8 parts of antimony trioxide;
5-12 parts of chlorinated paraffin;
50-90 parts of a solid flame retardant;
10-15 parts of a flame-retardant lubricant;
35-45 parts of carbon black.
In the invention, the weight part of the natural rubber is preferably 1 to 15 parts, more preferably 5 to 10 parts, and most preferably 7 to 8 parts. The invention has no special limitation on the type and source of the natural rubber, and the natural rubber well known to those skilled in the art can be adopted and can be purchased in the market.
In the invention, the weight portion of the styrene-butadiene rubber is preferably 65-75 parts, more preferably 68-72 parts, and most preferably 70 parts. The invention has no special limitation on the type and source of the styrene-butadiene rubber, and the styrene-butadiene rubber which is well known to a person skilled in the art can be adopted and can be purchased from the market.
In the invention, the weight part of the butadiene rubber is preferably 22-28 parts, and more preferably 24-26 parts. The invention has no special limitation on the type and source of the butadiene rubber, and the butadiene rubber well known to those skilled in the art can be adopted and can be purchased from the market.
In the invention, the weight part of the zinc oxide is preferably 4-5 parts.
In the present invention, the weight part of stearic acid is preferably 0.1 to 1.5 parts, more preferably 0.5 to 1.2 parts, and most preferably 0.8 to 1 part.
In the invention, the weight part of the accelerator is preferably 1.2-1.8 parts, and more preferably 1.4-1.6 parts. In the present invention, the accelerator is preferably two or more selected from the group consisting of 2-mercaptobenzothiazole, dibenzothiazyl disulfide, N-cycloethyl-2-benzothiazylsulfenamide, N-oxydiethylene-2-benzothiazylsulfenamide and tetramethylthiuram disulfide. The source of the promoter is not particularly limited in the present invention and may be commercially available, for example, the promoter CZ, the promoter DM or the promoter NOBS may be used.
In the present invention, the antioxidant is preferably 2.5 to 3.5 parts by weight, and more preferably 3 parts by weight. In the present invention, the antioxidant is preferably two or more selected from the group consisting of 2,2, 4-trimethyl-1, 2-dihydroquinoline, N-isopropyl-N' -phenyl-p-phenylenediamine and 9, 9-dimethylacridine. The source of the anti-aging agent is not particularly limited, and the anti-aging agent can be obtained from the market, such as the anti-aging agent 4010NA or the anti-aging agent RD.
In the present invention, the weight part of the paraffin wax is preferably 1.2 to 1.8 parts, and more preferably 1.4 to 1.8 parts.
In the invention, the weight part of the sulfur is preferably 2-2.5 parts, and more preferably 2.2-2.3 parts.
In the invention, the antimony trioxide is preferably 4-7 parts by weight, and more preferably 5-6 parts by weight.
In the invention, the weight part of the chlorinated paraffin is preferably 6-10 parts, and more preferably 7-8 parts. The invention has no special limitation on the type and source of the chlorinated paraffin, and the chlorinated paraffin known to those skilled in the art can be adopted and can be purchased from the market.
In the present invention, the solid flame retardant is preferably 60 to 80 parts by weight, more preferably 65 to 75 parts by weight, and most preferably 70 parts by weight. In the present invention, the solid flame retardant is preferably selected from two or more of ultrafine aluminum silicate, a silicon-based flame retardant, ammonium polyphosphate, ultrafine aluminum hydroxide, an intumescent flame retardant, and zinc borate. In the present invention, the silicon-based flame retardant is well known to those skilled in the art, and the silicone polymer is used more, and is a transparent and viscous polysiloxane polymer, and can be incorporated into the base material polymer structure by a mechanism similar to the interpenetrating polymer network partial crosslinking mechanism, so that the fluidity of the silicon additive can be greatly limited, the silicon additive can not migrate to the surface of the polymer to be flame-retarded, and the silicon-based flame retardant is compatible with high polymers such as polyolefin. In the invention, the intumescent flame retardant is an intumescent flame retardant well known by the technical personnel in the field, is an environment-friendly green flame retardant, does not contain halogen, does not adopt antimony oxide as a synergist, has a synergistic effect in the system, and foams and expands when being heated. The solid flame retardant is not particularly limited in its source, and may be commercially available, for example, as the composite flame retardant DIN-K or the silicon-based flame retardant SFR.
In the invention, the weight part of the flame-retardant lubricant is preferably 11-14 parts, and more preferably 12-13 parts. In the present invention, the flame-retardant lubricant is preferably selected from the solid flame-retardant lubricants MB-202. The source of the flame-retardant lubricant is not particularly limited in the present invention and is commercially available.
In the present invention, the carbon black is preferably 38 to 42 parts by weight, and more preferably 40 parts by weight. The carbon black of the present invention is not particularly limited in kind and source, and carbon black well known to those skilled in the art may be used and commercially available.
The cold-resistant flame-retardant covering rubber provided by the invention adopts specific components, particularly uses butadiene rubber, and uses natural rubber and styrene butadiene rubber in a matching way, because the natural rubber and the styrene butadiene rubber have poor flame-retardant effect, the natural rubber and the styrene butadiene rubber are rarely used in flame-retardant rubber materials, and if the natural rubber and the styrene butadiene rubber are used as main components to ensure the flame retardance of the rubber materials, a large amount of flame retardant is required to be added, but the excessive use amount of the flame retardant can cause other performances of the rubber, such as mechanical properties, to be low; according to the invention, natural rubber, butadiene styrene rubber and butadiene rubber are used in a matching manner, the addition of butadiene rubber improves the cold resistance of the rubber material, and the proper flame retardants are selected for mutual cooperation, so that a better flame retardant effect is realized under the condition of using less flame retardants. The rubber material has good cold-resistant and flame-retardant properties under the comprehensive action of specific components and component contents, can ensure the flame retardant property of the rubber material, does not become hard and brittle at the low temperature of-60 ℃, is crack-resistant, and can prolong the service life of the conveyer belt.
The invention provides a cold-resistant flame-retardant intermediate adhesive which comprises the following components in parts by weight:
c is natural rubber, and C is more than 0 and less than or equal to 30;
70-100 parts of butadiene rubber;
5-8 parts of zinc oxide;
d part of stearic acid, wherein D is more than 0 and less than or equal to 2;
1-2 parts of an accelerator;
2-4 parts of an anti-aging agent;
1.5-3 parts of sulfur;
1-3 parts of antimony trioxide;
3-6 parts of chlorinated paraffin;
50-90 parts of a solid flame retardant;
35-45 parts of carbon black.
In the invention, the weight part of the natural rubber is preferably 1 to 25 parts, more preferably 5 to 20 parts, and most preferably 10 to 15 parts.
In the invention, the weight part of the butadiene rubber is preferably 75-95 parts, more preferably 80-90 parts, and most preferably 85 parts.
In the invention, the weight part of the zinc oxide is preferably 6-7 parts.
In the present invention, the weight part of the stearic acid is preferably 0.1 to 1.5 parts, more preferably 0.5 to 1 part, and most preferably 0.7 to 0.8 part.
In the invention, the weight part of the accelerator is preferably 1.2-1.8 parts, and more preferably 1.4-1.6 parts. In the present invention, the kind and source of the accelerator are the same as those of the accelerator described in the above technical solution, and are not described herein again.
In the present invention, the antioxidant is preferably 2.5 to 3.5 parts by weight, and more preferably 3 parts by weight. In the present invention, the kind and source of the antioxidant are the same as those of the antioxidant in the above technical scheme, and are not described herein again.
In the invention, the weight part of the sulfur is preferably 2-2.5 parts, and more preferably 2.2-2.3 parts.
In the invention, the weight part of the antimony trioxide is preferably 1.5-2.5 parts, and more preferably 2 parts.
In the invention, the weight part of the chlorinated paraffin is preferably 4-5 parts.
In the present invention, the solid flame retardant is preferably 60 to 80 parts by weight, more preferably 65 to 75 parts by weight, and most preferably 70 parts by weight. In the present invention, the kind and source of the solid flame retardant are the same as those of the solid flame retardant described in the above technical solution, and are not described herein again.
In the present invention, the carbon black is preferably 38 to 42 parts by weight, and more preferably 40 parts by weight.
The cold-resistant flame-retardant intermediate rubber provided by the invention adopts specific components, particularly uses the butadiene rubber, and uses the butadiene rubber and the natural rubber in a matching way, so that the rubber material has good cold resistance and good flame-retardant property, and uses less flame retardant.
The invention provides a cold-resistant flame-retardant core adhesive which comprises the following components in parts by weight:
20-30 parts of natural rubber;
35-55 parts of styrene butadiene rubber;
25-35 parts of butadiene rubber;
5-8 parts of zinc oxide;
1-3 parts of magnesium oxide;
e part of stearic acid, wherein E is more than 0 and less than or equal to 2;
1-2 parts of an accelerator;
2-4 parts of an anti-aging agent;
1.5-3 parts of sulfur;
2-3 parts of cobalt salt;
3-6 parts of an adhesive;
7-12 parts of white carbon black;
1-3 parts of antimony trioxide;
3-6 parts of chlorinated paraffin;
50-90 parts of a solid flame retardant;
35-45 parts of carbon black.
In the invention, the weight part of the natural rubber is preferably 22 to 28 parts, and more preferably 24 to 26 parts.
In the invention, the weight part of the styrene-butadiene rubber is preferably 40-50 parts, and more preferably 45 parts.
In the invention, the weight part of the butadiene rubber is preferably 28-32 parts, and more preferably 30 parts.
In the invention, the weight part of the zinc oxide is preferably 6-7 parts.
In the invention, the weight part of the magnesium oxide is preferably 1.5-2.5 parts, and more preferably 2 parts. In the present invention, the magnesium oxide is preferably light magnesium oxide.
In the present invention, the weight part of stearic acid is preferably 0.1 to 1.5 parts, more preferably 0.5 to 1.2 parts, and most preferably 0.8 to 1 part.
In the invention, the weight part of the accelerator is preferably 1.2-1.8 parts, and more preferably 1.4-1.6 parts. In the present invention, the kind and source of the promoter are the same as those of the promoter described in the above technical solution, and are not described herein again.
In the present invention, the antioxidant is preferably 2.5 to 3.5 parts by weight, and more preferably 3 parts by weight. In the present invention, the kind and source of the antioxidant are the same as those of the antioxidant in the above technical scheme, and are not described herein again.
In the invention, the weight part of the sulfur is preferably 2-2.5 parts, and more preferably 2.2-2.3 parts.
In the invention, the weight part of the cobalt salt is preferably 2.2-2.8 parts, and more preferably 2.4-2.6 parts. In the present invention, the cobalt salt is preferably selected from cobalt boroacylate. The source of the cobalt salt is not particularly limited in the present invention and can be commercially available.
In the invention, the weight part of the adhesive is preferably 4-5 parts. In the present invention, the binder is preferably two or more selected from hexamethoxymethylmelamine, a precondensate of resorcinol and formaldehyde, maleic anhydride-complexed butadiene, and a modified melamine compound. In the present invention, the precondensate of resorcinol and formaldehyde is commercially available, and for example, an RF-90 adhesive; the maleic anhydride complex butadiene is commercially available; the modified melamine compound is commercially available. The present invention is not particularly limited in kind and source of the adhesive, and may be commercially available, for example, RF-90 adhesive or HMMM adhesive may be used.
In the invention, the white carbon black is preferably 8-11 parts by weight, and more preferably 9-10 parts by weight.
In the invention, the weight part of the antimony trioxide is preferably 1.5-2.5 parts, and more preferably 2 parts.
In the invention, the weight part of the chlorinated paraffin is preferably 4-5 parts.
In the present invention, the solid flame retardant is preferably 60 to 80 parts by weight, more preferably 65 to 75 parts by weight, and even more preferably 70 parts by weight. In the present invention, the kind and source of the solid flame retardant are the same as those of the solid flame retardant in the above technical solution, and are not described herein again.
In the present invention, the carbon black is preferably 38 to 42 parts by weight, and more preferably 40 parts by weight.
The core rubber provided by the invention is prepared by adding butadiene rubber into natural rubber and styrene butadiene rubber, so that the rubber material has good cold resistance, and the rubber material has good flame retardance under the condition of using less flame retardant.
The invention provides a cold-resistant flame-retardant steel wire rope core conveying belt, which comprises:
a wire rope;
the core rubber layer is coated outside the steel wire rope;
the first middle glue layer is arranged on the upper surface of the core glue layer;
the second middle glue layer is arranged on the lower surface of the core glue layer;
the upper covering glue layer is arranged on the upper surface of the first intermediate glue layer;
the lower covering glue layer is arranged on the lower surface of the second middle glue layer.
According to the invention, the cold-resistant intermediate adhesive layer is arranged between the covering adhesive layer and the core adhesive layer, and the core adhesive layer adopts specific components and component dosage, so that the cold-resistant performance is good, the low-temperature air can be effectively prevented from being transferred to the bonding core adhesive layer and the steel wire rope, and the service life of the conveying belt is further prolonged.
The invention has no special limitation on the type and source of the steel wire rope, and the steel wire rope well known to the technical personnel in the field can be adopted and can be purchased from the market. In the present invention, the diameter and the pitch of the wire ropes are preferably implemented in accordance with the MT668-2008 flame-retardant conveyor belt for a wire rope core for coal mine.
In the invention, the core rubber layer is coated outside the steel wire rope, and the steel wire rope is arranged inside the core rubber layer and coated by the core rubber layer. In the invention, the core adhesive layer is formed by the cold-resistant flame-retardant core adhesive in the technical scheme, and the components of the core adhesive layer are consistent with those of the cold-resistant flame-retardant core adhesive in the technical scheme, so that the details are not repeated. In the invention, the thickness of the core glue layer is preferably 6-13 mm, more preferably 8-10 mm, and most preferably 9-9.5 mm.
In the invention, the upper surface and the lower surface of the core glue layer are respectively provided with an intermediate glue layer, the intermediate glue layer arranged on the upper surface of the core glue layer is marked as a first intermediate glue layer, and the intermediate glue layer arranged on the lower surface of the core glue layer is marked as a second intermediate glue layer. In the invention, the first intermediate adhesive layer and the second intermediate adhesive layer are both formed by the cold-resistant flame-retardant intermediate adhesive in the technical scheme, and the components of the first intermediate adhesive layer and the second intermediate adhesive layer are consistent with those of the cold-resistant flame-retardant intermediate adhesive in the technical scheme, and are not described herein again. In the present invention, the components and the contents of the components of the first intermediate adhesive layer may be the same as or different from those of the second intermediate adhesive layer. In the invention, the thicknesses of the first intermediate glue layer and the second intermediate glue layer are independent and preferably 1.5-2.5 mm, more preferably 1.8-2.2 mm, and most preferably 2 mm.
In the invention, the upper surface of the first intermediate glue layer is provided with an upper covering glue layer, and the lower surface of the second intermediate glue layer is provided with a lower covering glue layer. In the invention, the upper covering rubber layer and the lower covering rubber layer are both formed by the cold-resistant flame-retardant covering rubber in the technical scheme, and the components of the upper covering rubber layer and the lower covering rubber layer are consistent with those of the cold-resistant flame-retardant covering rubber in the technical scheme, so that the details are not repeated. In the present invention, the content of the components and the components of the upper cover lay adhesive layer may be the same as or different from the content of the components and the components of the lower cover lay adhesive layer. In the invention, the independent thicknesses of the upper covering glue layer and the lower covering glue layer are preferably 3.5-7.3 mm, more preferably 4-7 mm, and most preferably 5-6 mm.
In the present invention, the structure of the cold-resistant flame-retardant steel wire rope core conveyor belt is preferably as shown in fig. 1, and comprises:
a lower covering glue layer 4;
the second middle layer 6 is arranged on the surface of the lower covering glue layer;
the core glue layer 5 is arranged on the surface of the second intermediate layer;
the steel wire rope 3 is filled in the core rubber layer;
the first intermediate layer 2 is arranged on the surface of the core glue layer;
and the upper covering glue layer 1 is arranged on the surface of the first intermediate layer.
In the invention, the preparation method of the cold-resistant flame-retardant steel wire rope core conveying belt comprises the following steps:
and (3) carrying out cold pressing and vulcanizing on the composite rubber sheets of the covering rubber sheets, the middle rubber sheets and the core rubber sheets and the steel wire rope to obtain the cold-resistant flame-retardant steel wire rope core conveying belt.
In the invention, the preparation method of the composite film of the covering film, the middle film and the core film comprises the following steps:
respectively mixing the cold-resistant flame-retardant covering rubber, the cold-resistant flame-retardant intermediate rubber and the cold-resistant flame-retardant core rubber, and rolling into sheets to respectively obtain a covering rubber sheet, an intermediate rubber sheet and a core rubber sheet;
the structure of the cold-resistant flame-retardant steel wire rope core conveying belt is compounded with the covering film, the middle film and the core film, namely the first middle film and the second middle film are respectively arranged on the upper surface and the lower surface of the core film, the covering film is arranged on the upper surface of the first middle film, and the lower surface of the second middle film is provided with the lower covering film.
In the present invention, the kneading is preferably carried out by plastication and blending, and a two-stage kneading method is used. In the invention, the temperature of the cold-resistant flame-retardant covering rubber and the cold-resistant flame-retardant intermediate rubber during the first-stage mixing is preferably less than or equal to 140 ℃, and the temperature of the cold-resistant flame-retardant core rubber during the first-stage mixing is preferably less than or equal to 135 ℃. In the invention, the accelerant and the adhesive are added during the two-stage mixing of the cold-resistant flame-retardant covering rubber, the cold-resistant flame-retardant intermediate rubber and the cold-resistant flame-retardant core rubber, and the two-stage mixing temperature is preferably less than or equal to 100 ℃.
In the invention, the first-stage mixing is preferably coarse mixing, and the temperature of a roller before an open mill is preferably 40-50 ℃, more preferably 42-48 ℃, more preferably 44-46 ℃ and most preferably 45 ℃; the temperature of the rear roller is preferably 45-55 ℃, more preferably 48-52 ℃ and most preferably 50 ℃; the thickness of the film is preferably less than or equal to 4mm, the passing times are preferably more than or equal to 6 times, the standing time is preferably less than or equal to 30min, and the film-removing temperature is preferably 40-60 ℃, more preferably 45-55 ℃, and most preferably 50 ℃.
In the invention, the two-stage mixing is preferably fine mixing, the temperature of a front roller of an open mill is preferably 60-70 ℃, more preferably 62-68 ℃, more preferably 64-66 ℃, most preferably 65 ℃, and the temperature of a rear roller is preferably 65-75 ℃, more preferably 68-72 ℃, and most preferably 70 ℃; the thickness of the film is preferably less than or equal to 6mm, the passing times are preferably more than or equal to 5 times, the standing time is preferably less than or equal to 4min, and the film-removing temperature is preferably 60-80 ℃, more preferably 65-75 ℃ and most preferably 70 ℃.
In the invention, the feeding sequence in the mixing process is preferably raw rubber, medium and small materials, carbon black, a flame retardant and a vulcanizing agent; the raw rubber is preferably natural rubber, styrene butadiene rubber and butadiene rubber; the medium and small materials are preferably zinc oxide, stearic acid, an accelerator, an anti-aging agent, paraffin, magnesium oxide (light magnesium oxide), an adhesive, cobalt salt and white carbon black; the flame retardant is preferably a solid flame retardant, a flame-retardant lubricant, chlorinated paraffin and antimony trioxide; the vulcanizing agent is preferably sulfur.
In the present invention, the method of calendering into sheets is preferably entering a calender to calender into films of desired thickness and width. In the invention, the upper roll temperature in the calendering and sheeting process of the cold-resistant flame-retardant covering rubber is preferably 75-85 ℃, more preferably 78-82 ℃ and most preferably 80 ℃; the middle roll temperature is preferably 65-75 ℃, more preferably 68-72 ℃ and most preferably 70 ℃; the lower roll temperature is preferably 40-50 ℃, more preferably 42-48 ℃, more preferably 44-46 ℃ and most preferably 45 ℃.
In the invention, the upper roll temperature in the calendering and sheeting process of the cold-resistant flame-retardant intermediate adhesive is preferably 75-85 ℃, more preferably 78-82 ℃ and most preferably 80 ℃; the middle roll temperature is preferably 65-75 ℃, more preferably 68-72 ℃ and most preferably 70 ℃; the lower roll temperature is preferably 40-50 ℃, more preferably 42-48 ℃, more preferably 44-46 ℃ and most preferably 45 ℃.
In the invention, the upper roll temperature in the calendering and sheeting process of the cold-resistant flame-retardant core rubber is preferably 75-85 ℃, more preferably 78-82 ℃ and most preferably 80 ℃; the middle roll temperature is preferably 80-90 ℃, more preferably 82-88 ℃, and most preferably 85 ℃; the lower roll temperature is preferably 50-60 ℃, more preferably 52-58 ℃, more preferably 54-56 ℃ and most preferably 55 ℃.
In the invention, before cold pressing, steel wire rope spindles are preferably hung according to the specified type, diameter and number of the steel wire ropes, the spindles are hung in the middle and the front as much as possible, and then extend to the two sides and the rear; spindle hanging and leading out a steel wire rope, wherein left and right twisting spindles are arranged alternately, the steel wire rope is led out from the upper part of the spindle and is led to a carding device through a guide groove rod and a pore plate; introducing steel wire ropes into a tension station carding device one by one from the middle part of the carding, arranging the steel wire ropes left and right alternately, and arranging the steel wire ropes sequentially towards the two sides of the carding; each steel wire rope penetrates into a corresponding tension pulley groove and is led out of the tension station forwards; starting a spindle torque motor, reversely rewinding the steel wire rope by the spindle, adjusting the torque motor to ensure that the steel wire rope on the spindle frame has certain initial tension, lifting a tension station platform to ensure that all the steel wire ropes are in a horizontal state, and applying fixed tension.
In the invention, in the process of cold pressing, the steel wire rope is placed inside the core rubber sheets, for example, the steel wire rope can be placed between two core rubber sheets for cold pressing, and the thickness of the two core rubber sheets is half of that of the whole core rubber sheet respectively, so that the steel wire rope is arranged inside the core rubber sheets.
In the invention, the unit pressure of the cold pressing is preferably 1.0-2.0 MPa, more preferably 1.2-1.8 MPa, and most preferably 1.4-1.6 MPa; the cold pressing time is preferably 25-35 s, more preferably 28-32 s, and most preferably 30 s. The invention preferably inspects the obtained cold-pressed belt blank section by section, repairs in time, removes air bubbles, pastes a repair film with the same purpose and proper thickness to the belt blank with thinner or defective local thickness, and fills and cuts the belt blank.
In the invention, the vulcanizing method is preferably to heat and press the belt blank on a vulcanizing machine at certain temperature, pressure and time to vulcanize the belt blank into a finished conveyor belt product with the performance of the elastomer. In the invention, in order to improve the vulcanization efficiency and the vulcanization quality of the conveyer belt, the vulcanization temperature is preferably 145-150 ℃, more preferably 146-149 ℃, and most preferably 147-148 ℃. In the invention, the vulcanization pressure is preferably 2.8-3.2 MPa, more preferably 2.9-3.1 MPa, and most preferably 3 MPa; the vulcanizing time is preferably 30-49 min, more preferably 35-45 min, and most preferably 40 min.
The cold-resistant flame-retardant steel wire rope core conveyer belt provided by the invention meets the standard requirements of MT668-2008 'flame-retardant steel wire rope core for coal mine', and can be used for a long time in an environment of 60 ℃ below zero.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural view of a cold-resistant flame-retardant steel wire rope core conveyor belt provided by an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The raw materials used in the following examples of the present invention are all commercially available products.
Example 1
The cold-resistant flame-retardant cover rubber comprises the following components:
the cold-resistant flame-retardant intermediate adhesive comprises the following components:
adding natural rubber, butadiene styrene rubber and butadiene rubber according to the components of the cold-resistant flame-retardant covering rubber, then adding zinc oxide, stearic acid, antioxidant 4010NA, antioxidant RD, No. 58 paraffin, accelerator CZ and accelerator DM, and then adding nano aluminum silicate F100 and Sb2O370# chlorinated paraffin, ammonium polyphosphate (APP), a flame-retardant lubricant (MB-202, provided by Dazhongxian county star light fine chemical industry Co., Ltd.), a composite flame retardant (DIN-K, provided by Shenhua rubber and plastic additive Co., Ltd.), a silicon-based flame retardant (SFR, provided by Shanghai Bingkuo rubber industry Co., Ltd.) and carbon black (N220), and finally adding S (sulfur) for crude refining: the temperature of a front roller of the open mill is 45 ℃, the temperature of a rear roller is 50 ℃, the thickness of a rubber sheet is less than or equal to 4mm, the passing times are more than or equal to 6 times, the standing time is less than or equal to 30min, and the temperature of the next sheet is 50 ℃ for coarse milling; refining after coarse refining: the temperature of a front roller of the open mill is 65 ℃, the temperature of a rear roller is 70 ℃, the thickness of a rubber sheet is less than or equal to 6mm, the passing times are more than or equal to 5 times, the standing time is less than or equal to 4min, the temperature of a lower sheet is 70 ℃, and then the rubber sheet enters a calender for calendering: the upper roll temperature is 80 ℃, the middle roll temperature is 70 ℃, and the lower roll temperature is 45 ℃ to obtain the covering rubber sheet.
Adding natural rubber and butadiene rubber BR9000, adding zinc oxide, stearic acid, antiager 4010NA, antiager RD, promoter CZ and promoter DM, and adding nanometer aluminum silicate F100 and Sb2O370# chlorinated paraffin, 40Kg of composite flame retardant (DIN-K provided by Shenhua rubber and plastic additive Co., Ltd.) and 45Kg of carbon black (N220), and finally adding S (sulfur) for coarse refining: the temperature of a front roller of the open mill is 45 ℃, the temperature of a rear roller is 50 ℃, the thickness of a rubber sheet is less than or equal to 4mm, the passing times are more than or equal to 6 times, the standing time is less than or equal to 30min,roughly smelting at the lower sheet temperature of 50 ℃; refining after coarse refining: the temperature of a front roller of the open mill is 65 ℃, the temperature of a rear roller is 70 ℃, the thickness of a rubber sheet is less than or equal to 6mm, the passing times are more than or equal to 5 times, the standing time is less than or equal to 4min, the temperature of a lower sheet is 70 ℃, and then the rubber sheet enters a calender for calendering: the upper roll temperature is 80 ℃, the middle roll temperature is 70 ℃, and the lower roll temperature is 45 ℃ to obtain an intermediate rubber sheet.
Adding natural rubber (No. 1 standard rubber), styrene butadiene rubber (SBR-1502) and butadiene rubber BR9000 according to the components of the cold-resistant flame-retardant core rubber, then adding zinc oxide, stearic acid, light magnesium oxide, an anti-aging agent 4010NA, an anti-aging agent BLE, an accelerant NOBS, an adhesive (RF-90 provided by Huaqi chemical Limited company), an adhesive (HMMM provided by Huaqi chemical Limited company), cobalt boracylate and white carbon black, then adding nano aluminum silicate F100, zinc borate and Sb2O370# chlorinated paraffin, a composite flame retardant (DIN-K, provided by Shenhua rubber and plastic additive Co., Ltd.) and carbon black (N220), and finally adding S (sulfur) for coarse refining: the temperature of a front roller of the open mill is 45 ℃, the temperature of a rear roller is 50 ℃, the thickness of a rubber sheet is less than or equal to 4mm, the passing times are more than or equal to 6 times, the standing time is less than or equal to 30min, and the temperature of the next sheet is 50 ℃ for coarse milling; refining after coarse refining: the temperature of a front roller of the open mill is 65 ℃, the temperature of a rear roller is 70 ℃, the thickness of a rubber sheet is less than or equal to 6mm, the passing times are more than or equal to 5 times, the standing time is less than or equal to 4min, the temperature of a lower sheet is 70 ℃, and then the rubber sheet enters a calender for calendering: the upper roll temperature is 80 ℃, the middle roll temperature is 85 ℃, and the lower roll temperature is 55 ℃ to obtain the core rubber sheet.
And hanging steel wire rope spindles according to the specified types, diameters and numbers of the steel wire ropes, wherein the spindles are hung in the middle and the front as much as possible and then extend to the two sides and the rear. The spindle is hung with material and led out a steel wire rope, the left and right twisting spindles are arranged alternately, the steel wire rope is led out from the upper part of the spindle and is led to the coarse carding device through a guide groove stick and a pore plate. The steel wire ropes are led into a tension station carding device one by one from the middle part of the carding, are arranged in a left-right twisting and alternate mode, and are sequentially arranged towards the two sides of the carding. Each wire rope penetrates into a corresponding tension pulley groove and is led out of the tension station forwards. Starting a spindle torque motor, reversely rewinding the steel wire rope by the spindle, adjusting the torque motor to ensure that the steel wire rope on the spindle frame has certain initial tension, lifting a tension station platform to ensure that all the steel wire ropes are in a horizontal state, and applying fixed tension.
Compounding the covering film, the middle film and the core film: the upper surface and the lower surface of the core film are respectively provided with a first middle film and a second middle film, the upper surface of the first middle film is provided with an upper covering film, and the lower surface of the second middle film is provided with a lower covering film.
Arranging the steel wire rope in the core rubber sheets (the steel wire rope can be placed between the two core rubber sheets), and then carrying out cold pressing, wherein the unit pressure of the cold pressing is 1.5MPa, and the time of the cold pressing is 30 s; vulcanizing the cold-pressed belt blank on a vulcanizing machine, wherein the vulcanizing temperature is 147 ℃, the vulcanizing pressure is 3MPa, and the vulcanizing time is 35min, so that the cold-resistant flame-retardant steel wire rope core conveying belt is obtained, and comprises the following steps: the lower covering glue layer is 5.5 mm; the second middle layer is arranged on the surface of the lower covering glue layer by 2 mm; the core glue layer is arranged on the surface of the second intermediate layer and is 10 mm; the steel wire rope is filled in the core rubber layer; the first middle layer is arranged on the surface of the core glue layer and is 2 mm; and the upper covering glue layer is arranged on the surface of the first intermediate layer by 5.5 mm.
Example 2
The cold-resistant flame-retardant cover rubber comprises the following components:
the cold-resistant flame-retardant intermediate adhesive comprises the following components:
the cold-resistant flame-retardant core rubber comprises the following components:
adding styrene butadiene rubber and butadiene rubber according to the components of the cold-resistant flame-retardant covering rubber, then adding zinc oxide, stearic acid, antioxidant 4010NA, antioxidant RD, No. 58 paraffin, accelerator CZ and accelerator DM, and then adding nano aluminum silicate F100 and Sb2O370# chlorinated paraffin, ammonium polyphosphate (APP), a flame-retardant lubricant (MB-202, provided by Dazhongxian county star light fine chemical industry Co., Ltd.), a composite flame retardant (DIN-K, provided by Shenhua rubber and plastic additive Co., Ltd.), a silicon-based flame retardant (SFR, provided by Shanghai Bingkuo rubber industry Co., Ltd.) and carbon black (N220), and finally adding S (sulfur) for crude refining: the temperature of a front roller of the open mill is 40 ℃, the temperature of a rear roller is 45 ℃, the thickness of a rubber sheet is less than or equal to 4mm, the passing times are more than or equal to 6 times, the standing time is less than or equal to 30min, and the temperature of the lower sheet is 40 ℃ for coarse milling; refining after coarse refining: the temperature of a front roller of the open mill is 60 ℃, the temperature of a rear roller is 65 ℃, the thickness of a film is less than or equal to 6mm, the passing times are more than or equal to 5 times, the standing time is less than or equal to 4min, the temperature of a lower sheet is 60 ℃, and then the sheet enters a calender for calendering: the upper roll temperature is 75 ℃, the middle roll temperature is 65 ℃, and the lower roll temperature is 40 ℃ to obtain the covering rubber sheet.
Adding natural rubber and butadiene rubber BR9000, adding zinc oxide, stearic acid, antiager 4010NA, antiager RD, promoter CZ and promoter DM, and adding nanometer aluminum silicate F100 and Sb2O370# chlorinated paraffin, 40Kg of composite flame retardant (DIN-K provided by Shenhua rubber and plastic additive Co., Ltd.) and 45Kg of carbon black (N220), and finally adding S (sulfur) for coarse refining: the temperature of a front roller of the open mill is 40 ℃, the temperature of a rear roller is 45 ℃, the thickness of a rubber sheet is less than or equal to 4mm, the passing times are more than or equal to 6 times, the standing time is less than or equal to 30min, and the temperature of the lower sheet is 40 ℃ for coarse milling; refining after coarse refining: the temperature of a front roller of the open mill is 60 ℃, the temperature of a rear roller is 65 ℃, the thickness of a film is less than or equal to 6mm, the passing times are more than or equal to 5 times, the standing time is less than or equal to 4min, the temperature of a lower sheet is 60 ℃, and then the sheet enters a calender for calendering: the upper roll temperature is 75 ℃, the middle roll temperature is 65 ℃, and the lower roll temperature is 40 ℃ to obtain an intermediate rubber sheet.
According to the components of the cold-resistant flame-retardant core rubber, natural rubber (No. 1 standard rubber), styrene butadiene rubber (SBR-1502) and butadiene rubber are added firstlyBR9000, zinc oxide, stearic acid, light magnesium oxide, antiager 4010NA, antiager BLE, promoter NOBS, adhesive (RF-90, provided by Huaqi chemical Co., Ltd.), adhesive (HMMM, provided by Huaqi chemical Co., Ltd.), cobalt boroacylate and white carbon black, and nanometer aluminum silicate F100, zinc borate, Sb2O370# chlorinated paraffin, a composite flame retardant (DIN-K, provided by Shenhua rubber and plastic additive Co., Ltd.) and carbon black (N220), and finally adding S (sulfur) for coarse refining: the temperature of a front roller of the open mill is 40 ℃, the temperature of a rear roller is 45 ℃, the thickness of a rubber sheet is less than or equal to 4mm, the passing times are more than or equal to 6 times, the standing time is less than or equal to 30min, and the temperature of the lower sheet is 40 ℃ for coarse milling; refining after coarse refining: the temperature of a front roller of the open mill is 60 ℃, the temperature of a rear roller is 65 ℃, the thickness of a film is less than or equal to 6mm, the passing times are more than or equal to 5 times, the standing time is less than or equal to 4min, the temperature of a lower sheet is 60 ℃, and then the sheet enters a calender for calendering: the upper roll temperature is 75 ℃, the middle roll temperature is 80 ℃, and the lower roll temperature is 50 ℃ to obtain the core rubber sheet.
And hanging steel wire rope spindles according to the specified types, diameters and numbers of the steel wire ropes, wherein the spindles are hung in the middle and the front as much as possible and then extend to the two sides and the rear. The spindle is hung with material and led out a steel wire rope, the left and right twisting spindles are arranged alternately, the steel wire rope is led out from the upper part of the spindle and is led to the coarse carding device through a guide groove stick and a pore plate. The steel wire ropes are led into a tension station carding device one by one from the middle part of the carding, are arranged in a left-right twisting and alternate mode, and are sequentially arranged towards the two sides of the carding. Each wire rope penetrates into a corresponding tension pulley groove and is led out of the tension station forwards. Starting a spindle torque motor, reversely rewinding the steel wire rope by the spindle, adjusting the torque motor to ensure that the steel wire rope on the spindle frame has certain initial tension, lifting a tension station platform to ensure that all the steel wire ropes are in a horizontal state, and applying fixed tension.
Compounding the covering film, the middle film and the core film: the upper surface and the lower surface of the core film are respectively provided with a first middle film and a second middle film, the upper surface of the first middle film is provided with an upper covering film, and the lower surface of the second middle film is provided with a lower covering film.
Arranging the steel wire rope in the core rubber sheets and then carrying out cold pressing (the steel wire rope can be placed between the two core rubber sheets), wherein the unit pressure of the cold pressing is 1.0MPa, and the time of the cold pressing is 25 s; vulcanizing the cold-pressed belt blank on a vulcanizing machine, wherein the vulcanizing temperature is 145 ℃, the vulcanizing pressure is 2.8MPa, and the vulcanizing time is 30min, so that the cold-resistant flame-retardant steel wire rope core conveying belt is obtained, and comprises the following steps: the lower covering glue layer is 3.5 mm; the second middle layer is arranged on the surface of the lower covering glue layer and is 1.5 mm; the core glue layer is arranged on the surface of the second intermediate layer and is 6 mm; the steel wire rope is filled in the core rubber layer; the first middle layer is arranged on the surface of the core glue layer and is 1.5 mm; the upper covering glue layer is arranged on the surface of the first middle layer and is 3.5 mm.
Example 3
The cold-resistant flame-retardant cover rubber comprises the following components:
the cold-resistant flame-retardant intermediate adhesive comprises the following components:
the cold-resistant flame-retardant core rubber comprises the following components:
adding natural rubber, butadiene styrene rubber and butadiene rubber according to the components of the cold-resistant flame-retardant covering rubber, then adding zinc oxide, stearic acid, antioxidant 4010NA, antioxidant RD, No. 58 paraffin, accelerator CZ and accelerator DM, and then adding nano aluminum silicate F100 and Sb2O370# chlorinated paraffin and polyphosphoric acidAmine (APP), flame-retardant lubricant (MB-202, provided by Namewa rubber and plastic auxiliary agent Co., Ltd.), composite flame retardant (DIN-K, provided by Shenhua rubber and plastic auxiliary agent Co., Ltd.), silicon flame retardant (SFR, provided by Shanghai ancient oak industry Co., Ltd.), and carbon black (N220), and finally adding S (sulfur) for coarse refining: the temperature of a front roller of the open mill is 50 ℃, the temperature of a rear roller is 55 ℃, the thickness of a film is less than or equal to 4mm, the passing times are more than or equal to 6 times, the standing time is less than or equal to 30min, and the film discharging temperature is 60 ℃ for coarse milling; refining after coarse refining: the temperature of a front roller of an open mill is 70 ℃, the temperature of a rear roller is 75 ℃, the thickness of a rubber sheet is less than or equal to 6mm, the passing times are more than or equal to 5 times, the standing time is less than or equal to 4min, the temperature of a lower sheet is 80 ℃, and then the rubber sheet enters a calender for calendering: the upper roll temperature is 85 ℃, the middle roll temperature is 75 ℃, and the lower roll temperature is 50 ℃ to obtain the covering rubber sheet.
Adding natural rubber and butadiene rubber BR9000, adding zinc oxide, stearic acid, antiager 4010NA, antiager RD, promoter CZ and promoter DM, and adding nanometer aluminum silicate F100 and Sb2O370# chlorinated paraffin, 40Kg of composite flame retardant (DIN-K provided by Shenhua rubber and plastic additive Co., Ltd.) and 45Kg of carbon black (N220), and finally adding S (sulfur) for coarse refining: the temperature of a front roller of the open mill is 50 ℃, the temperature of a rear roller is 55 ℃, the thickness of a film is less than or equal to 4mm, the passing times are more than or equal to 6 times, the standing time is less than or equal to 30min, and the film discharging temperature is 60 ℃ for coarse milling; refining after coarse refining: the temperature of a front roller of an open mill is 70 ℃, the temperature of a rear roller is 75 ℃, the thickness of a rubber sheet is less than or equal to 6mm, the passing times are more than or equal to 5 times, the standing time is less than or equal to 4min, the temperature of a lower sheet is 80 ℃, and then the rubber sheet enters a calender for calendering: the upper roll temperature is 85 ℃, the middle roll temperature is 75 ℃, and the lower roll temperature is 50 ℃ to obtain an intermediate rubber sheet.
Adding natural rubber (No. 1 standard rubber), styrene butadiene rubber (SBR-1502) and butadiene rubber BR9000 according to the components of the cold-resistant flame-retardant core rubber, then adding zinc oxide, stearic acid, light magnesium oxide, an anti-aging agent 4010NA, an anti-aging agent BLE, an accelerant NOBS, an adhesive (RF-90 provided by Huaqi chemical Limited company), an adhesive (HMMM provided by Huaqi chemical Limited company), cobalt boracylate and white carbon black, then adding nano aluminum silicate F100, zinc borate and Sb2O370# chlorinated paraffin and composite flame retardant (DIN-K, provided by Shenhua rubber and plastic auxiliary agent Co., Ltd.)) And carbon black (N220), and finally, S (sulfur) is added for primary refining: the temperature of a front roller of the open mill is 50 ℃, the temperature of a rear roller is 55 ℃, the thickness of a film is less than or equal to 4mm, the passing times are more than or equal to 6 times, the standing time is less than or equal to 30min, and the film discharging temperature is 60 ℃ for coarse milling; refining after coarse refining: the temperature of a front roller of an open mill is 70 ℃, the temperature of a rear roller is 75 ℃, the thickness of a rubber sheet is less than or equal to 6mm, the passing times are more than or equal to 5 times, the standing time is less than or equal to 4min, the temperature of a lower sheet is 80 ℃, and then the rubber sheet enters a calender for calendering: the upper roll temperature is 85 ℃, the middle roll temperature is 90 ℃ and the lower roll temperature is 60 ℃ to obtain the core rubber sheet.
And hanging steel wire rope spindles according to the specified types, diameters and numbers of the steel wire ropes, wherein the spindles are hung in the middle and the front as much as possible and then extend to the two sides and the rear. The spindle is hung with material and led out a steel wire rope, the left and right twisting spindles are arranged alternately, the steel wire rope is led out from the upper part of the spindle and is led to the coarse carding device through a guide groove stick and a pore plate. The steel wire ropes are led into a tension station carding device one by one from the middle part of the carding, are arranged in a left-right twisting and alternate mode, and are sequentially arranged towards the two sides of the carding. Each wire rope penetrates into a corresponding tension pulley groove and is led out of the tension station forwards. Starting a spindle torque motor, reversely rewinding the steel wire rope by the spindle, adjusting the torque motor to ensure that the steel wire rope on the spindle frame has certain initial tension, lifting a tension station platform to ensure that all the steel wire ropes are in a horizontal state, and applying fixed tension.
Compounding the covering film, the middle film and the core film: the upper surface and the lower surface of the core film are respectively provided with a first middle film and a second middle film, the upper surface of the first middle film is provided with an upper covering film, and the lower surface of the second middle film is provided with a lower covering film.
Arranging the steel wire rope in the core rubber sheets (the steel wire rope can be placed between the two core rubber sheets), and then carrying out cold pressing, wherein the unit pressure of the cold pressing is 2MPa, and the time of the cold pressing is 35 s; vulcanizing the cold-pressed belt blank on a vulcanizing machine, wherein the vulcanizing temperature is 150 ℃, the vulcanizing pressure is 3.2MPa, and the vulcanizing time is 49min, so that the cold-resistant flame-retardant steel wire rope core conveying belt is obtained, and comprises the following steps: the lower covering glue layer is 7.3 mm; the second middle layer is arranged on the surface of the lower covering glue layer by 2.5 mm; the core glue layer is arranged on the surface of the second intermediate layer and is 13 mm; the steel wire rope is filled in the core rubber layer; the first middle layer is arranged on the surface of the core glue layer and is 2.5 mm; and 7.3mm of an upper covering glue layer arranged on the surface of the first intermediate layer.
Example 4
The performances of the covering layer, the intermediate layer and the core adhesive layer in the cold-resistant flame-retardant steel wire rope core conveyor belt prepared in the embodiments 1 to 3 of the present invention were measured according to the MT668-2008 standard "steel wire rope core flame-retardant conveyor belt for coal mine", and the measurement results are shown in tables 1 to 3.
TABLE 1 Properties of coverlay adhesives prepared in accordance with the examples of the invention
Table 2 properties of intermediate bondlines prepared according to examples of the invention
TABLE 3 Properties of the core rubber layer prepared by the inventive example
The cold-resistant flame-retardant steel wire rope core conveyer belt provided by the invention meets the standard requirements of MT668-2008 'flame-retardant steel wire rope core for coal mine', and can be used for a long time in an environment of 60 ℃ below zero.
From the above embodiments, the present invention provides a cold-resistant flame-retardant covering adhesive, comprising: 0-20 parts of natural rubber; 60-80 parts of styrene butadiene rubber; 20-30 parts of butadiene rubber; 3-6 parts of zinc oxide; 0-2 parts of stearic acid; 1-2 parts of an accelerator; 2-4 parts of an anti-aging agent; 1-2 parts of paraffin; 1.5-3 parts of sulfur; 3-8 parts of antimony trioxide; 5-12 parts of chlorinated paraffin; 50-90 parts of a solid flame retardant; 10-15 minutes of flame-retardant lubricant; 35-45 parts of carbon black. The cold-resistant flame-retardant covering rubber provided by the invention has good cold-resistant flame-retardant property under the comprehensive action of specific components and component contents, can ensure the flame-retardant property of rubber materials, can ensure that the rubber materials do not become hard and brittle at the low temperature of-60 ℃, is crack-resistant, and can prolong the service life of a conveying belt.
Claims (9)
1. The cold-resistant flame-retardant intermediate adhesive comprises the following components in parts by weight:
5-20 parts of natural rubber;
70-100 parts of butadiene rubber;
6-7 parts of zinc oxide;
0.7-0.8 parts of stearic acid;
1.2-1.8 parts of an accelerator;
2-4 parts of an anti-aging agent;
1.5-3 parts of sulfur;
1-3 parts of antimony trioxide;
3-6 parts of chlorinated paraffin;
50-90 parts of a solid flame retardant;
35-45 parts of carbon black.
2. The cold-resistant flame-retardant intermediate gum as claimed in claim 1, wherein the accelerator is selected from two or more of 2-mercaptobenzothiazole, dibenzothiazyl disulfide, N-cycloethyl-2-benzothiazylsulfenamide, diethylene-2-benzothiazylsulfenamide N-oxide and tetramethylthiuram disulfide;
the anti-aging agent is selected from two or more of 2,2, 4-trimethyl-1, 2-dihydroquinoline, N-isopropyl-N' -phenyl p-phenylenediamine and 9, 9-dimethylacridine;
the solid flame retardant is selected from two or more than two of superfine aluminum silicate, silicon flame retardant, ammonium polyphosphate, superfine aluminum hydroxide, intumescent flame retardant and zinc borate.
3. The cold-resistant flame-retardant core adhesive comprises the following components in parts by weight:
24-26 parts of natural rubber;
35-55 parts of styrene butadiene rubber;
25-35 parts of butadiene rubber;
5-8 parts of zinc oxide;
1-3 parts of magnesium oxide;
0.1-1.5 parts of stearic acid;
1-2 parts of an accelerator;
2-4 parts of an anti-aging agent;
1.5-3 parts of sulfur;
2-3 parts of cobalt salt;
3-6 parts of an adhesive;
7-12 parts of white carbon black;
1-3 parts of antimony trioxide;
3-6 parts of chlorinated paraffin;
50-90 parts of a solid flame retardant;
35-45 parts of carbon black.
4. The cold-resistant flame-retardant core gum according to claim 3, wherein the accelerator is selected from two or more of 2-mercaptobenzothiazole, dibenzothiazyl disulfide, N-cycloethyl-2-benzothiazylsulfenamide, diethylene-2-benzothiazylsulfenamide N-oxide and tetramethylthiuram disulfide;
the anti-aging agent is selected from two or more of 2,2, 4-trimethyl-1, 2-dihydroquinoline, N-isopropyl-N' -phenyl p-phenylenediamine and 9, 9-dimethylacridine;
the cobalt salt is selected from cobalt boroacylate;
the adhesive is selected from two or more of hexamethoxymethylmelamine, a precondensate of resorcinol and formaldehyde, maleic anhydride complex butadiene and modified melamine compound;
the solid flame retardant is selected from two or more than two of superfine aluminum silicate, silicon flame retardant, ammonium polyphosphate, superfine aluminum hydroxide, intumescent flame retardant and zinc borate.
5. A cold-resistant flame-retardant steel wire rope core conveyor belt comprises:
a wire rope;
a core rubber layer coated outside the steel wire rope, wherein the core rubber layer is formed by the cold-resistant flame-retardant core rubber of claim 3;
a first intermediate adhesive layer disposed on an upper surface of the core adhesive layer, the first intermediate adhesive layer being formed of the cold-resistant flame-retardant intermediate adhesive of claim 1;
a second intermediate adhesive layer disposed on the lower surface of the core adhesive layer, the second intermediate adhesive layer being formed of the cold-resistant flame-retardant intermediate adhesive of claim 1;
the upper covering glue layer is arranged on the upper surface of the first middle glue layer and is formed by cold-resistant flame-retardant covering glue;
the lower covering glue layer is arranged on the lower surface of the second middle glue layer and is formed by cold-resistant flame-retardant covering glue;
the cold-resistant flame-retardant covering adhesive comprises the following components in parts by weight:
a is more than or equal to 0 and less than or equal to 20;
60-80 parts of styrene butadiene rubber;
20-30 parts of butadiene rubber;
3-6 parts of zinc oxide;
b is stearic acid, wherein B is more than 0 and less than or equal to 2;
1-2 parts of an accelerator;
2-4 parts of an anti-aging agent;
1-2 parts of paraffin;
1.5-3 parts of sulfur;
3-8 parts of antimony trioxide;
5-12 parts of chlorinated paraffin;
50-90 parts of a solid flame retardant;
10-15 minutes of flame-retardant lubricant;
35-45 parts of carbon black.
6. The cold-resistant flame-retardant steel wire rope core conveying belt according to claim 5, wherein the thickness of the core rubber layer is 6-13 mm.
7. The cold-resistant flame-retardant steel wire rope core conveyor belt according to claim 5, wherein the thicknesses of the first intermediate glue layer and the second intermediate glue layer are independently selected from 1.5-2.5 mm.
8. The cold-resistant flame-retardant steel wire rope core conveying belt according to claim 5, characterized in that the thicknesses of the upper covering glue layer and the lower covering glue layer are independently selected from 3.5-7.3 mm.
9. The cold resistant flame retardant steel cord conveyor belt of claim 5 wherein said accelerator is selected from two or more of 2-mercaptobenzothiazole, dibenzothiazyl disulfide, N-cycloethyl-2-benzothiazylsulfonamide, N-oxydiethylene-2-benzothiazylsulfonamide, and tetramethylthiuram disulfide;
the anti-aging agent is selected from two or more of 2,2, 4-trimethyl-1, 2-dihydroquinoline, N-isopropyl-N' -phenyl p-phenylenediamine and 9, 9-dimethylacridine;
the solid flame retardant is selected from two or more than two of superfine aluminum silicate, silicon flame retardant, ammonium polyphosphate, superfine aluminum hydroxide, intumescent flame retardant and zinc borate;
the flame retardant lubricant is selected from the solid flame retardant lubricant MB-202.
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| CN114644796B (en) * | 2022-05-06 | 2023-10-20 | 中国化工集团曙光橡胶工业研究设计院有限公司 | Ablation-resistant rubber for aviation and preparation method and application thereof |
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| JP5446418B2 (en) * | 2009-04-20 | 2014-03-19 | 株式会社ブリヂストン | Rubber composition for conveyor belt and conveyor belt |
| KR100997025B1 (en) * | 2010-06-24 | 2010-11-25 | 주식회사 쌍 곰 | Cold-resistant two-component tile adhesive with strong points of light weight aggregate blended |
| CN102516617A (en) * | 2011-12-08 | 2012-06-27 | 无锡宝通带业股份有限公司 | High-strength laminated fire-retarding conveyer belt coating rubber, and preparation method thereof |
| CN102718017B (en) * | 2012-07-13 | 2014-12-03 | 安徽中意胶带有限责任公司 | Cold-resistant flame-retardant steel wire rope core conveyer belt |
| CN103113641B (en) * | 2013-02-04 | 2014-12-31 | 无锡宝通带业股份有限公司 | Low-hardness high-fatigue-drawing-resistance flame-retardant steel wire rope core conveyer belt core rubber and preparation method thereof |
| CN103086117B (en) * | 2013-02-05 | 2015-03-11 | 兖矿集团有限公司 | Oil-resistant and cold-resistant steel wire rope core conveyer belt |
| CN107602946A (en) * | 2017-08-14 | 2018-01-19 | 安徽欧耐橡塑工业有限公司 | Low-smoke non-halogen flame-retardant steel cable core conveying belt coating elastomer and preparation method thereof |
| CN108841057A (en) * | 2018-05-21 | 2018-11-20 | 兖矿集团唐村实业有限公司 | Steel core conveyor belt and preparation method thereof |
| CN108948445A (en) * | 2018-08-03 | 2018-12-07 | 兖矿集团唐村实业有限公司 | A kind of energy-saving steel wire rope core conveyer belt and energy-saving steel wire rope core conveyer belt processing method |
| CN109054123A (en) * | 2018-09-26 | 2018-12-21 | 兖矿集团唐村实业有限公司 | Fire retarding conveying band and preparation method thereof |
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2019
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