CN111410005A - Oil-resistant and acid-alkali-resistant rubber conveyer belt and preparation process thereof - Google Patents
Oil-resistant and acid-alkali-resistant rubber conveyer belt and preparation process thereof Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
- B65G15/32—Belts or like endless load-carriers made of rubber or plastics
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- C08L7/00—Compositions of natural rubber
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J107/00—Adhesives based on natural rubber
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- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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- C09J11/04—Non-macromolecular additives inorganic
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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Abstract
The invention discloses an oil-resistant, acid-resistant and alkali-resistant rubber conveyer belt and a preparation process thereof, and relates to the technical field of rubber conveyer belts. The invention enhances the oil resistance and the dust resistance of the conveyer belt by adding the oil stain resistant reinforcing agent and the acid and alkali resistant agent into the raw materials of the covering layer and the adhesive layer, further enhances the acid and alkali resistance of the conveyer belt by the acid and alkali resistant agent formed by combining alumina and silica, simultaneously enhances the wear resistance and the mechanical property of the conveyer belt, and adds the nano additive, so that the surface smoothness and the strength of the conveyer belt are further enhanced, the conveyer belt has the capability of eliminating static electricity, the application range and the use quality of the conveyer belt are further enhanced, and the conveyer belt has the advantages of high oil resistance, good wear resistance, strong acid and alkali resistance and long service life.
Description
Technical Field
The invention relates to the technical field of rubber conveying belts, in particular to an oil-resistant acid-alkali-resistant rubber conveying belt and a preparation process thereof.
Background
The conveyer belt, also called conveyer belt, is a composite product of rubber, fiber and metal, or a composite product of plastic and fabric, which is used in the conveyer belt to carry and convey materials. The conveying belt is widely applied to occasions with short conveying distance and small conveying amount in the industries of cement, coking, metallurgy, chemical industry, steel and the like, and the rubber conveying belt is designed.
The rubber conveyer belt also comprises common conveyer belts, heat-resistant conveyer belts, cold-resistant conveyer belts, acid and alkali resistant conveyer belts, oil resistant conveyer belts, food conveyer belts and other types.
The chinese patent discloses a rubber conveyer belt (No. CN104592599A), the conveyer belt heat conductivity of this patent technology production is good, and the conveyer belt is after ageing, the strength change rate and the elongation at break change rate of this conveyer belt are better, but this conveyer belt combines the current rubber conveyer belt of market to carry out the analysis and comparison, its resistant greasy dirt performance is perfect inadequately, long-time use, the resistant greasy dirt performance of this conveyer belt can descend, and its acid and alkali resistance is good inadequately, time has been of a specified duration, the transmission belt can be corroded by acid and alkali, and then reduce its life, the self-cleaning performance in rubber conveyer belt surface on the market at present simultaneously is poor, the smooth finish on its surface is not enough, not only wash inconveniently, and influence the sanitary quality of product easily. Therefore, the oil-resistant and acid-alkali-resistant rubber conveyor belt is provided by the technical personnel in the field to solve the problems in the background technology.
Disclosure of Invention
The invention aims to provide an oil-resistant and acid-alkali-resistant rubber conveying belt to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the oil-resistant and acid-alkali-resistant rubber conveying belt comprises an upper covering rubber layer, a lower covering rubber layer, a bonding rubber layer and a framework layer, wherein the upper covering rubber layer and the lower covering rubber layer are prepared from the following raw materials in parts by weight: 100-200 parts of natural rubber, 10-15 parts of an oil stain resistant reinforcing agent, 5-10 parts of an acid and alkali resistant agent, 1-5 parts of an adhesive, 7-15 parts of a tackifier, 2-5 parts of an anti-aging agent, 1-3 parts of an accelerator, 0.5-2 parts of a vulcanizing agent and 2-8 parts of a high-efficiency nano additive;
the framework layer is polyester canvas or aramid canvas which is subjected to dip dyeing treatment by using a nano additive;
the adhesive layer comprises the following components in parts by weight: 100-200 parts of natural rubber, 10-15 parts of an oil stain resistant reinforcing agent, 5-10 parts of an acid and alkali resistant agent, 1-5 parts of an adhesive, 7-15 parts of a rubber modifier, 2-5 parts of an anti-aging agent, 1-3 parts of an accelerator, 0.5-2 parts of a vulcanizing agent and 2-8 parts of a high-efficiency nano additive.
As a further scheme of the invention: the tackifier is a condensation product of unsaturated alkylphenol and formaldehyde, the accelerator is a DM accelerator, and the vulcanizing agent is a vulcanizing agent TMCH.
As a still further scheme of the invention: the efficient nano additive is FMR242 efficient nano additive, and the rubber modifier is SPE-100 rubber modifier.
As a still further scheme of the invention: the oil stain resistant reinforcing agent comprises the following components in parts by weight: 20-30 parts of water-based fluorocarbon emulsion, 15-25 parts of water-based acrylic resin emulsion, 12-20 parts of fluorosilicone rubber emulsion and 10-15 parts of polystyrene microspheres.
As a still further scheme of the invention: the preparation method of the oil stain resistant reinforcing agent comprises the following steps:
s1, sequentially putting the water-based fluorocarbon emulsion and the water-based acrylic resin emulsion into a mixing tank for uniform mixing for 15min, wherein the rotating speed is 2000-3000 r/min;
and S2, adding the fluorosilicone rubber emulsion and the polystyrene microspheres into the mixing tank, continuously mixing and stirring for 30min, keeping the temperature constant at 40-60 ℃ during the mixing, and mixing uniformly to obtain the oil stain resistant reinforcing agent.
As a still further scheme of the invention: the acid and alkali resistant agent is a mixture formed by combining alumina and silicon dioxide.
As a still further scheme of the invention: the preparation process of the conveyer belt comprises the following steps:
step one), preparing an upper covering glue layer and a lower covering glue layer:
a1, decocting a certain amount of natural rubber into a liquid shape, pouring the liquid shape into a stirring tank, simultaneously sequentially adding a certain amount of oil stain resistant reinforcing agent, adhesive and anti-aging agent into the stirring tank, and then uniformly stirring for 30min, wherein the temperature is controlled to be 50-70 ℃;
a2, adding a certain amount of acid and alkali resistant agent, tackifier and high-efficiency nano additive after stirring uniformly, stirring for 30min again, and obtaining mixed glue after mixing uniformly;
a3, adding an accelerant and a vulcanizing agent after the above steps are finished, continuously mixing, cooling to room temperature after uniform mixing, and preparing the prepared rubber material into flaky covering rubber;
step two), preparing an adhesive layer:
b1, decocting a certain amount of natural rubber into a liquid shape, pouring the liquid shape into a stirring tank, simultaneously sequentially adding a certain amount of oil stain resistant reinforcing agent, adhesive and anti-aging agent into the stirring tank, and uniformly stirring for 30min, wherein the temperature is controlled to be 40-60 ℃;
b2, adding a certain amount of acid and alkali resistant agent, rubber modifier and high-efficiency nano additive after uniformly stirring, stirring for 30min again, and uniformly mixing to obtain mixed rubber;
b3, adding an accelerant and a vulcanizing agent after the above steps are finished, continuously mixing, cooling to room temperature after uniform mixing, and preparing the prepared rubber material into a flaky adhesive layer;
step three), preparation of the conveying belt:
c1, respectively stacking the covering glue prepared in the first step and the adhesive glue prepared in the second step with the framework layers to form a conveying belt blank;
and C2, vulcanizing the conveyer belt blank at the temperature of 70-140 ℃, under the pressure of 10-25 MPa for 30-90 min, and cooling and shaping to obtain the oil-resistant and acid-alkali-resistant rubber conveyer belt.
Compared with the prior art, the invention has the beneficial effects that: the oil-resistant, acid-base-resistant rubber conveyer belt designed by the invention is practically operated, the oil-resistant reinforcing agent and the acid-base-resistant agent are added into the raw materials of the covering layer and the adhesive layer, on one hand, the oil-resistant and dust-resistant performance of the conveyer belt is enhanced, the cleaning is convenient, on the other hand, the acid-base-resistant performance of the conveyer belt is further improved through the acid-base-resistant agent formed by combining alumina and silica, because the alumina in the acid-base-resistant agent has good hardness and wear resistance, and the silica has good mechanical property, the wear resistance and mechanical property of the conveyer belt can be effectively improved, the conveyer belt has good use value and application prospect, and the nano additive and the skeleton layer subjected to dip dyeing treatment by the nano additive are added into the raw materials of the covering layer and the adhesive layer, so that the surface finish degree and strength of the conveyer belt are further enhanced, the conveying belt designed by the invention has high oil resistance, good wear resistance, strong acid and alkali resistance and long service life, and simultaneously has self-cleaning performance and static electricity eliminating capability.
Drawings
FIG. 1 is a schematic structural diagram of an oil-resistant, acid-and alkali-resistant rubber conveyer belt;
FIG. 2 is a schematic diagram showing the components of upper and lower rubber layers of an oil-resistant, acid-and alkali-resistant rubber conveyer belt;
FIG. 3 is a schematic diagram of the components of an adhesive layer in an oil-resistant, acid-and alkali-resistant rubber conveyer belt;
fig. 4 is a schematic diagram of experimental comparison results in an oil-resistant, acid-and alkali-resistant rubber conveyor belt.
In the figure: 1. a rubber transmission belt body; 2. covering a glue layer; 3. bonding the adhesive layer; 4. a framework layer; 5. and covering a glue layer.
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.
Referring to fig. 1-4, in the embodiment of the present invention,
example 1
The oil-resistant and acid-alkali-resistant rubber conveying belt comprises an upper covering rubber layer, a lower covering rubber layer, a bonding rubber layer and a framework layer, wherein the upper and lower covering rubber layers are composed of the following raw materials in parts by weight: 100 parts of natural rubber, 10 parts of oil stain resistant reinforcing agent, 5 parts of acid and alkali resistant agent, 1 part of adhesive, 7 parts of tackifier, 2 parts of anti-aging agent, 1 part of accelerator, 0.5 part of vulcanizing agent and 2 parts of high-efficiency nano additive;
the framework layer is polyester canvas or aramid canvas which is subjected to dip dyeing treatment by using a nano additive;
the adhesive layer comprises the following components in parts by weight: 100 parts of natural rubber, 10 parts of oil stain resistant reinforcing agent, 5 parts of acid and alkali resistant agent, 1 part of adhesive, 7 parts of rubber modifier, 2 parts of anti-aging agent, 1 part of accelerator, 0.5 part of vulcanizing agent and 2 parts of high-efficiency nano additive.
Wherein the tackifier is a condensation product of unsaturated alkylphenol and formaldehyde, the accelerator is DM accelerator, and the vulcanizing agent is TMCH.
Wherein the high-efficiency nano additive is FMR242 high-efficiency nano additive, and the rubber modifier is SPE-100 rubber modifier.
Further, the oil stain resistant reinforcing agent comprises the following components in parts by weight: 20 parts of water-based fluorocarbon emulsion, 15 parts of water-based acrylic resin emulsion, 12 parts of fluorosilicone rubber emulsion and 10 parts of polystyrene microspheres.
The preparation method of the oil stain resistant reinforcing agent comprises the following steps:
s1, sequentially putting the water-based fluorocarbon emulsion and the water-based acrylic resin emulsion into a mixing tank for uniform mixing for 15min, wherein the rotating speed is 2000-3000 r/min;
and S2, adding the fluorosilicone rubber emulsion and the polystyrene microspheres into the mixing tank, continuously mixing and stirring for 30min, keeping the temperature constant at 40-60 ℃ during the mixing, and mixing uniformly to obtain the oil stain resistant reinforcing agent.
Still further, the acid and alkali resistant agent is a mixture of alumina and silica.
Further, the preparation process of the oil-resistant and acid-alkali-resistant rubber conveyer belt comprises the following steps:
step one), preparing an upper covering glue layer and a lower covering glue layer:
a1, decocting a certain amount of natural rubber into a liquid shape, pouring the liquid shape into a stirring tank, simultaneously sequentially adding a certain amount of oil stain resistant reinforcing agent, adhesive and anti-aging agent into the stirring tank, and then uniformly stirring for 30min, wherein the temperature is controlled to be 50-70 ℃;
a2, adding a certain amount of acid and alkali resistant agent, tackifier and high-efficiency nano additive after stirring uniformly, stirring for 30min again, and obtaining mixed glue after mixing uniformly;
a3, adding an accelerant and a vulcanizing agent after the above steps are finished, continuously mixing, cooling to room temperature after uniform mixing, and preparing the prepared rubber material into flaky covering rubber;
step two), preparing an adhesive layer:
b1, decocting a certain amount of natural rubber into a liquid shape, pouring the liquid shape into a stirring tank, simultaneously sequentially adding a certain amount of oil stain resistant reinforcing agent, adhesive and anti-aging agent into the stirring tank, and uniformly stirring for 30min, wherein the temperature is controlled to be 40-60 ℃;
b2, adding a certain amount of acid and alkali resistant agent, rubber modifier and high-efficiency nano additive after uniformly stirring, stirring for 30min again, and uniformly mixing to obtain mixed rubber;
b3, adding an accelerant and a vulcanizing agent after the above steps are finished, continuously mixing, cooling to room temperature after uniform mixing, and preparing the prepared rubber material into a flaky adhesive layer;
step three), preparation of the conveying belt:
c1, respectively stacking the covering glue prepared in the first step and the adhesive glue prepared in the second step with the framework layers to form a conveying belt blank;
and C2, vulcanizing the conveyer belt blank at the temperature of 70-140 ℃, under the pressure of 10-25 MPa for 30-90 min, and cooling and shaping to obtain the oil-resistant and acid-alkali-resistant rubber conveyer belt.
Example 2
The oil-resistant and acid-alkali-resistant rubber conveying belt comprises an upper covering rubber layer, a lower covering rubber layer, a bonding rubber layer and a framework layer, wherein the upper and lower covering rubber layers are composed of the following raw materials in parts by weight: 200 parts of natural rubber, 15 parts of oil stain resistant reinforcing agent, 10 parts of acid and alkali resistant agent, 5 parts of adhesive, 15 parts of tackifier, 5 parts of anti-aging agent, 3 parts of accelerator, 2 parts of vulcanizing agent and 8 parts of high-efficiency nano additive;
the framework layer is polyester canvas or aramid canvas which is subjected to dip dyeing treatment by using a nano additive;
the adhesive layer comprises the following components in parts by weight: 200 parts of natural rubber, 15 parts of oil stain resistant reinforcing agent, 10 parts of acid and alkali resistant agent, 5 parts of adhesive, 15 parts of rubber modifier, 5 parts of anti-aging agent, 3 parts of accelerator, 2 parts of vulcanizing agent and 8 parts of high-efficiency nano additive.
Wherein the tackifier is a condensation product of unsaturated alkylphenol and formaldehyde, the accelerator is DM accelerator, and the vulcanizing agent is TMCH.
Wherein the high-efficiency nano additive is FMR242 high-efficiency nano additive, and the rubber modifier is SPE-100 rubber modifier.
Further, the oil stain resistant reinforcing agent comprises the following components in parts by weight: 30 parts of water-based fluorocarbon emulsion, 25 parts of water-based acrylic resin emulsion, 20 parts of fluorosilicone rubber emulsion and 15 parts of polystyrene microspheres.
The preparation method of the oil stain resistant reinforcing agent comprises the following steps:
s1, sequentially putting the water-based fluorocarbon emulsion and the water-based acrylic resin emulsion into a mixing tank for uniform mixing for 15min, wherein the rotating speed is 2000-3000 r/min;
and S2, adding the fluorosilicone rubber emulsion and the polystyrene microspheres into the mixing tank, continuously mixing and stirring for 30min, keeping the temperature constant at 40-60 ℃ during the mixing, and mixing uniformly to obtain the oil stain resistant reinforcing agent.
Still further, the acid and alkali resistant agent is a mixture of alumina and silica.
Further, the preparation process of the oil-resistant and acid-alkali-resistant rubber conveyer belt comprises the following steps:
step one), preparing an upper covering glue layer and a lower covering glue layer:
a1, decocting a certain amount of natural rubber into a liquid shape, pouring the liquid shape into a stirring tank, simultaneously sequentially adding a certain amount of oil stain resistant reinforcing agent, adhesive and anti-aging agent into the stirring tank, and then uniformly stirring for 30min, wherein the temperature is controlled to be 50-70 ℃;
a2, adding a certain amount of acid and alkali resistant agent, tackifier and high-efficiency nano additive after stirring uniformly, stirring for 30min again, and obtaining mixed glue after mixing uniformly;
a3, adding an accelerant and a vulcanizing agent after the above steps are finished, continuously mixing, cooling to room temperature after uniform mixing, and preparing the prepared rubber material into flaky covering rubber;
step two), preparing an adhesive layer:
b1, decocting a certain amount of natural rubber into a liquid shape, pouring the liquid shape into a stirring tank, simultaneously sequentially adding a certain amount of oil stain resistant reinforcing agent, adhesive and anti-aging agent into the stirring tank, and uniformly stirring for 30min, wherein the temperature is controlled to be 40-60 ℃;
b2, adding a certain amount of acid and alkali resistant agent, rubber modifier and high-efficiency nano additive after uniformly stirring, stirring for 30min again, and uniformly mixing to obtain mixed rubber;
b3, adding an accelerant and a vulcanizing agent after the above steps are finished, continuously mixing, cooling to room temperature after uniform mixing, and preparing the prepared rubber material into a flaky adhesive layer;
step three), preparation of the conveying belt:
c1, respectively stacking the covering glue prepared in the first step and the adhesive glue prepared in the second step with the framework layers to form a conveying belt blank;
and C2, vulcanizing the conveyer belt blank at the temperature of 70-140 ℃, under the pressure of 10-25 MPa for 30-90 min, and cooling and shaping to obtain the oil-resistant and acid-alkali-resistant rubber conveyer belt.
Example 3
The oil-resistant and acid-alkali-resistant rubber conveying belt comprises an upper covering rubber layer, a lower covering rubber layer, a bonding rubber layer and a framework layer, wherein the upper and lower covering rubber layers are composed of the following raw materials in parts by weight: 150 parts of natural rubber, 12 parts of oil stain resistant reinforcing agent, 8 parts of acid and alkali resistant agent, 4 parts of adhesive, 10 parts of tackifier, 3 parts of anti-aging agent, 2 parts of accelerator, 1 part of vulcanizing agent and 5 parts of high-efficiency nano additive;
the framework layer is polyester canvas or aramid canvas which is subjected to dip dyeing treatment by using a nano additive;
the adhesive layer comprises the following components in parts by weight: 150 parts of natural rubber, 12 parts of oil stain resistant reinforcing agent, 8 parts of acid and alkali resistant agent, 4 parts of adhesive, 12 parts of rubber modifier, 3 parts of anti-aging agent, 2 parts of accelerator, 1 part of vulcanizing agent and 5 parts of high-efficiency nano additive.
Wherein the tackifier is a condensation product of unsaturated alkylphenol and formaldehyde, the accelerator is DM accelerator, and the vulcanizing agent is TMCH.
Wherein the high-efficiency nano additive is FMR242 high-efficiency nano additive, and the rubber modifier is SPE-100 rubber modifier.
Further, the oil stain resistant reinforcing agent comprises the following components in parts by weight: 25 parts of water-based fluorocarbon emulsion, 20 parts of water-based acrylic resin emulsion, 17 parts of fluorosilicone rubber emulsion and 13 parts of polystyrene microspheres.
The preparation method of the oil stain resistant reinforcing agent comprises the following steps:
s1, sequentially putting the water-based fluorocarbon emulsion and the water-based acrylic resin emulsion into a mixing tank for uniform mixing for 15min, wherein the rotating speed is 2000-3000 r/min;
and S2, adding the fluorosilicone rubber emulsion and the polystyrene microspheres into the mixing tank, continuously mixing and stirring for 30min, keeping the temperature constant at 40-60 ℃ during the mixing, and mixing uniformly to obtain the oil stain resistant reinforcing agent.
Still further, the acid and alkali resistant agent is a mixture of alumina and silica.
Further, the preparation process of the oil-resistant and acid-alkali-resistant rubber conveyer belt comprises the following steps:
step one), preparing an upper covering glue layer and a lower covering glue layer:
a1, decocting a certain amount of natural rubber into a liquid shape, pouring the liquid shape into a stirring tank, simultaneously sequentially adding a certain amount of oil stain resistant reinforcing agent, adhesive and anti-aging agent into the stirring tank, and then uniformly stirring for 30min, wherein the temperature is controlled to be 50-70 ℃;
a2, adding a certain amount of acid and alkali resistant agent, tackifier and high-efficiency nano additive after stirring uniformly, stirring for 30min again, and obtaining mixed glue after mixing uniformly;
a3, adding an accelerant and a vulcanizing agent after the above steps are finished, continuously mixing, cooling to room temperature after uniform mixing, and preparing the prepared rubber material into flaky covering rubber;
step two), preparing an adhesive layer:
b1, decocting a certain amount of natural rubber into a liquid shape, pouring the liquid shape into a stirring tank, simultaneously sequentially adding a certain amount of oil stain resistant reinforcing agent, adhesive and anti-aging agent into the stirring tank, and uniformly stirring for 30min, wherein the temperature is controlled to be 40-60 ℃;
b2, adding a certain amount of acid and alkali resistant agent, rubber modifier and high-efficiency nano additive after uniformly stirring, stirring for 30min again, and uniformly mixing to obtain mixed rubber;
b3, adding an accelerant and a vulcanizing agent after the above steps are finished, continuously mixing, cooling to room temperature after uniform mixing, and preparing the prepared rubber material into a flaky adhesive layer;
step three), preparation of the conveying belt:
c1, respectively stacking the covering glue prepared in the first step and the adhesive glue prepared in the second step with the framework layers to form a conveying belt blank;
and C2, vulcanizing the conveyer belt blank at the temperature of 70-140 ℃, under the pressure of 10-25 MPa for 30-90 min, and cooling and shaping to obtain the oil-resistant and acid-alkali-resistant rubber conveyer belt.
Comparative example 1
The rubber conveyer belt produced by the common process on the market is selected.
The experimental conditions are as follows:
the first condition is as follows: selecting a rubber conveying belt with a qualified finished product from each of examples 1-3 and comparative example 1;
and a second condition: respectively carrying out measurement experiments on the surfaces of the four selected rubber conveying belts, and observing the experimental conditions of the rubber conveying belts after half a month and one month;
and (3) carrying out a third condition: the oil stain resistance, acid and alkali resistance and the surface self-cleaning performance of the four rubber conveyer belts are respectively measured after the four rubber conveyer belts are tested for half a month and one month.
The results of the above experiment are shown in FIG. 4.
In conclusion, the oil-resistant, acid-base-resistant rubber conveyer belt designed by the invention has the advantages that the oil-resistant, dirt-resistant and acid-base-resistant reinforcing agents and the acid-base-resistant agents are added into the raw materials of the covering layer and the adhesive glue layer, so that on one hand, the oil resistance and dust resistance of the surface of the conveyer belt are enhanced, the cleaning is convenient, on the other hand, the acid-base-resistant performance of the conveyer belt is further improved through the acid-base-resistant agents formed by combining the aluminum oxide and the silicon dioxide, the abrasion resistance and the mechanical performance of the conveyer belt can be effectively improved due to the fact that the aluminum oxide in the acid-base-resistant agents has good hardness and abrasion resistance, and the silicon dioxide has good mechanical performance, so that the abrasion resistance and the mechanical performance of the conveyer belt can be effectively improved, the use value and the application prospect are good, and the nano, the conveying belt designed by the invention has the advantages of high oil resistance, good wear resistance, strong acid and alkali resistance, long service life, and high surface finish and static elimination capability.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The oil-resistant and acid-alkali-resistant rubber conveying belt comprises an upper covering rubber layer, a lower covering rubber layer, a bonding rubber layer and a framework layer, and is characterized in that the upper and lower covering rubber layers are composed of the following raw materials in parts by weight: 100-200 parts of natural rubber, 10-15 parts of an oil stain resistant reinforcing agent, 5-10 parts of an acid and alkali resistant agent, 1-5 parts of an adhesive, 7-15 parts of a tackifier, 2-5 parts of an anti-aging agent, 1-3 parts of an accelerator, 0.5-2 parts of a vulcanizing agent and 2-8 parts of a high-efficiency nano additive;
the framework layer is polyester canvas or aramid canvas which is subjected to dip dyeing treatment by using a nano additive;
the adhesive layer comprises the following components in parts by weight: 100-200 parts of natural rubber, 10-15 parts of an oil stain resistant reinforcing agent, 5-10 parts of an acid and alkali resistant agent, 1-5 parts of an adhesive, 7-15 parts of a rubber modifier, 2-5 parts of an anti-aging agent, 1-3 parts of an accelerator, 0.5-2 parts of a vulcanizing agent and 2-8 parts of a high-efficiency nano additive.
2. The oil-resistant, acid-resistant, and alkali-resistant rubber conveyor belt according to claim 1, wherein the tackifier is a condensate of unsaturated alkylphenol and formaldehyde, the accelerator is DM accelerator, and the vulcanizing agent is TMCH.
3. The oil-resistant, acid-resistant, and alkali-resistant rubber conveyor belt of claim 1, wherein the high efficiency nano additive is an FMR242 high efficiency nano additive, and the rubber modifier is an SPE-100 rubber modifier.
4. The oil-resistant acid-and-alkali-resistant rubber conveying belt according to claim 1, wherein the oil-resistant reinforcing agent comprises the following components in parts by weight: 20-30 parts of water-based fluorocarbon emulsion, 15-25 parts of water-based acrylic resin emulsion, 12-20 parts of fluorosilicone rubber emulsion and 10-15 parts of polystyrene microspheres.
5. The oil-resistant acid-and-alkali-resistant rubber conveying belt according to claim 4, wherein the preparation method of the oil-resistant reinforcing agent comprises the following steps:
s1, sequentially putting the water-based fluorocarbon emulsion and the water-based acrylic resin emulsion into a mixing tank for uniform mixing for 15min, wherein the rotating speed is 2000-3000 r/min;
and S2, adding the fluorosilicone rubber emulsion and the polystyrene microspheres into the mixing tank, continuously mixing and stirring for 30min, keeping the temperature constant at 40-60 ℃ during the mixing, and mixing uniformly to obtain the oil stain resistant reinforcing agent.
6. The oil and acid and alkali resistant rubber conveyor belt according to claim 1, wherein the acid and alkali resistant agent is a mixture of alumina and silica.
7. The oil-resistant, acid-and alkali-resistant rubber conveyor belt according to any one of claims 1 to 6, characterized in that the preparation process of the conveyor belt comprises the following steps:
step one), preparing an upper covering glue layer and a lower covering glue layer:
a1, decocting a certain amount of natural rubber into a liquid shape, pouring the liquid shape into a stirring tank, simultaneously sequentially adding a certain amount of oil stain resistant reinforcing agent, adhesive and anti-aging agent into the stirring tank, and then uniformly stirring for 30min, wherein the temperature is controlled to be 50-70 ℃;
a2, adding a certain amount of acid and alkali resistant agent, tackifier and high-efficiency nano additive after stirring uniformly, stirring for 30min again, and obtaining mixed glue after mixing uniformly;
a3, adding an accelerant and a vulcanizing agent after the above steps are finished, continuously mixing, cooling to room temperature after uniform mixing, and preparing the prepared rubber material into flaky covering rubber;
step two), preparing an adhesive layer:
b1, decocting a certain amount of natural rubber into a liquid shape, pouring the liquid shape into a stirring tank, simultaneously sequentially adding a certain amount of oil stain resistant reinforcing agent, adhesive and anti-aging agent into the stirring tank, and uniformly stirring for 30min, wherein the temperature is controlled to be 40-60 ℃;
b2, adding a certain amount of acid and alkali resistant agent, rubber modifier and high-efficiency nano additive after uniformly stirring, stirring for 30min again, and uniformly mixing to obtain mixed rubber;
b3, adding an accelerant and a vulcanizing agent after the above steps are finished, continuously mixing, cooling to room temperature after uniform mixing, and preparing the prepared rubber material into a flaky adhesive layer;
step three), preparation of the conveying belt:
c1, respectively stacking the covering glue prepared in the first step and the adhesive glue prepared in the second step with the framework layers to form a conveying belt blank;
and C2, vulcanizing the conveyer belt blank at the temperature of 70-140 ℃, under the pressure of 10-25 MPa for 30-90 min, and cooling and shaping to obtain the oil-resistant and acid-alkali-resistant rubber conveyer belt.
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