CN114103318A - Anti-adhesion conveying belt and preparation process thereof - Google Patents

Anti-adhesion conveying belt and preparation process thereof Download PDF

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Publication number
CN114103318A
CN114103318A CN202111483887.0A CN202111483887A CN114103318A CN 114103318 A CN114103318 A CN 114103318A CN 202111483887 A CN202111483887 A CN 202111483887A CN 114103318 A CN114103318 A CN 114103318A
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China
Prior art keywords
mixing
adhesion
conveying belt
steps
following
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CN202111483887.0A
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Chinese (zh)
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CN114103318B (en
Inventor
张建伍
安丰秀
朱元军
安丰春
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Qingdao Huiyang Mine Belt Co ltd
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Qingdao Huiyang Mine Belt Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/14—Layered products comprising a layer of natural or synthetic rubber comprising synthetic rubber copolymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D29/00—Producing belts or bands
    • B29D29/06—Conveyor belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B25/042—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/12—Layered products comprising a layer of natural or synthetic rubber comprising natural rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/16—Layered products comprising a layer of natural or synthetic rubber comprising polydienes homopolymers or poly-halodienes homopolymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/22—Layered products comprising a layer of synthetic resin characterised by the use of special additives using plasticisers
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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    • B32—LAYERED PRODUCTS
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    • B32B38/00—Ancillary operations in connection with laminating processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • 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
    • B65G15/34—Belts or like endless load-carriers made of rubber or plastics with reinforcing layers, e.g. of fabric
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L7/00—Compositions of natural rubber
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08L9/06—Copolymers with styrene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B2038/0052—Other operations not otherwise provided for
    • B32B2038/0076—Curing, vulcanising, cross-linking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/206—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
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    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/73—Hydrophobic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/746—Slipping, anti-blocking, low friction
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2433/00—Closed loop articles
    • B32B2433/02—Conveyor belts
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate

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  • Engineering & Computer Science (AREA)
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  • Wood Science & Technology (AREA)
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  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

The invention discloses an anti-adhesion conveying belt and a preparation process thereof. Comprises an upper covering glue, an upper adhesive tape, a belt core, a lower adhesive tape and a lower covering glue. 5-chloro-isophthalic acid modified chlorinated paraffin and superfine active argil are added into the rubberizing of the invention to ensure the bonding strength of the conveyer belt under repeated flexing during the use process. The cover rubber is added with oleamide and perfluoro copolymer to play roles of lubrication and adhesion prevention, and meanwhile, the micro-nano second-order composite surface structure formed by the anti-adhesion film is coated on the surface of the cover rubber by the anti-adhesion film with the micro-nano double-layer coarse structure on the surface, so that the form and stability of water drops on the surface of the micro-nano second-order composite surface structure are maintained. Can keep the original hydrophobic structure for a long time without being damaged, has better hydrophobic stability and good anti-adhesion effect, and is beneficial to industrial transportation and use.

Description

Anti-adhesion conveying belt and preparation process thereof
Technical Field
The invention relates to the technical field of conveying belts, in particular to an anti-adhesion conveying belt and a preparation process thereof.
Background
The material is carried can be with the cubic of different shapes and size, forms such as granule and powder transmit through the conveyer belt, the rubber conveyor who uses in outdoor operation, if meet moist or low temperature sleet weather, the material that the hydroscopicity is stronger wets easily, and wet material is very easy adhesion on the conveyer belt surface in the transportation, the serious wear belt body, shorten the life of conveyer belt, and follow the conveyer belt and get into the return section, cause the transportation line material to pile up, and the material adhesion has increased cylinder local diameter in other words, cause the conveyer belt off tracking on driving roller or afterbody cylinder, the material of adhesion makes the conveyer belt skid, reduce conveying efficiency, probably still can cause conveyer belt structural deformation and fracture scheduling problem. Once these problems occur, they are difficult to handle quickly on site, with a large loss to production. The material adhered to the surface of the conveyor belt cannot be cleaned in time by the cleaner, and is scattered around the conveyor, so that the field environment is seriously affected, the material is wasted, and the workload of cleaning the field environment is increased. If the sweeper is installed, the condition that the sweeper scraping plate scratches the belt body is easy to occur, and meanwhile, the service life of the sweeper is also shortened; if manual cleaning is arranged, the cost is higher, and flying materials can be harmful to human bodies. The adhered materials on the surface of the conveying belt not only reduce the conveying efficiency and reduce the electric energy consumption caused by the slippage of the conveying belt, but also have acid-base property or corrosiveness, so that the conveying belt can be corroded constantly, the service life of the conveying belt is shortened, the materials are adhered on the conveying belt to cause pollution, the scratching and even the breakage of the conveying belt are easy to happen, and the possibility of industrial accidents is also caused.
The anti-adhesion conveying belt is a conveying belt with a unique rubber anti-adhesion covering layer, so that the material adhesion in the use process in a low-temperature environment is greatly reduced, and troubles in the work operation are eliminated.
Disclosure of Invention
The invention aims to provide an anti-adhesion conveying belt and a preparation process thereof, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
a preparation process of an anti-adhesion conveying belt comprises the following steps: and heating and laminating the upper covering rubber, the upper adhesive, the nylon belt core, the lower adhesive and the lower covering rubber in sequence, wherein the laminating temperature is 170-190 ℃, vulcanizing the materials, and the vulcanizing temperature is 160-170 ℃, so as to obtain the anti-adhesion conveying belt.
Preferably, the preparation method of the upper adhesive tape and the lower adhesive tape comprises the following steps: mixing natural rubber and polyvinyl chloride resin together, mixing for 2-4 min, adding an anti-aging agent, a dispersing agent and a flame retardant, mixing for 2-4 min, adding superfine activated pottery clay, mixing for 6-8 min, adding a tackifier and a plasticizer, and mixing for 3-5 min at the temperature of 80-90 ℃; adding a vulcanizing agent, and mixing for 6-8 min; and (5) discharging, cooling and placing for 6-8 hours.
Preferably, the preparation method of the plasticizer comprises the following steps: the method comprises the following steps:
the method comprises the following steps: adding methanol and sodium hydrosulfide into a reactor, heating to 50-60 ℃, dropwise adding 5-chloro isophthalic acid, reacting for 10-12 h under the protection of nitrogen, vacuum drying, pouring ethanol, and vacuum drying to obtain 5-mercapto isophthalic acid;
step two: adding acetone and chlorinated paraffin into a reactor, stirring, adding 5-mercaptoisophthalic acid and potassium tert-butoxide, and reacting for 10-12 h at 60-80 ℃ under the protection of nitrogen; after the reaction is finished, extracting with ethanol, adjusting the pH value to 4 with hydrochloric acid, and drying in vacuum to obtain the plasticizer.
Preferably, the preparation method of the tackifier comprises the following steps: weighing tetramethylcyclotetrasiloxane and allyl glycidyl ether, introducing nitrogen into resorcinol for protection, and adding a catalyst; heating to 50-60 ℃ at the speed of 2 ℃/min and reacting for 2-3 h; heating to 80-100 ℃ at the speed of 2-5 ℃/min and reacting for 2-3 h; and distilling under reduced pressure to obtain the tackifier.
Preferably, the preparation method of the upper covering glue and the lower covering glue comprises the following steps:
the method comprises the following steps: firstly, mixing butadiene rubber and styrene butadiene rubber, plasticating for 1-3 min, and controlling the temperature at 30-50 ℃;
step two: uniformly mixing a fluorine-containing monomer, hydroxypropyl acrylate, methacrylic acid and an aliphatic isocyanate curing agent, premixing butyl acetate and xylene to form a mixed solvent, heating to 90-100 ℃, and carrying out heat preservation reaction for 3-4 hours to obtain the perfluorocopolymer.
Step three: adding the plasticated rubber into an internal mixer, sequentially adding zinc oxide, stearic acid, superfine activated clay, a perfluoro copolymer and a lubricant, and mixing for 5-7 min; cooling the mixed rubber to room temperature, adding N-cyclohexyl-2-benzothiazole sulfonamide, controlling the temperature to be 90-110 ℃, and mixing for 2-3 min; discharging, cooling and standing for 6-8 h; and vulcanizing for 20-30 min to obtain the upper covering glue and the lower covering glue.
Preferably, in step three, the lubricant is oleamide.
Preferably, the upper cover rubber and the lower cover rubber are wrapped with anti-adhesion films.
Preferably, the preparation method of the anti-adhesion film comprises the following steps: the method comprises the following steps:
the method comprises the following steps: adding micro-nano grade CaCO into ethanol3Heating and stirring the powder, adding an ethanol solution of trimethyl methoxysilane, filling nitrogen, heating and stirring, reacting for 2-3 h, taking out, performing suction filtration, and washing with ethanol; drying the washed filter cake for 2-3 h under the vacuum condition of 50-60 ℃, and crushing and grinding the obtained solid;
step two: mixing epoxy resin with ethanol and acetone solvent; adding polytetrafluoroethylene, mixing, adding modified micro-nano CaCO3Powder is evenly mixed; and coating the solution on the surfaces of the upper covering glue and the lower covering glue, and drying.
Compared with the prior art, the invention has the following beneficial effects:
(1) the plasticizer is chlorinated paraffin compounded by 5-chloro-isophthalic acid. Chlorinated paraffin is a chlorinated derivative of paraffin, and has the advantages of low volatility, flame retardancy, good electrical insulation, low price, and the like, but when the chlorinated paraffin is used alone as a plasticizer, the plasticizing effect is poor, and thus the application is limited. 5-chloro-isophthalic acid is compounded with chlorinated paraffin, so that the 5-chloro-isophthalic acid is low in price and good in compatibility with the chlorinated paraffin. The m-phthalic acid ester structure is introduced into the chlorinated paraffin, so that the plasticizing performance of the chlorinated paraffin can be optimized, and the plasticizer with good migration resistance and high plasticizing efficiency can be obtained. The tensile strength of the conveying belt is improved, and the plasticizing efficiency is improved.
(2) Adding superfine active pottery clay into the adhesive. The added superfine active pottery clay can play a role in bonding with resorcinol in the adhesive, so that the belt core and the adhesive tape are connected more tightly, the adhesive force between the adhesive layer and the cloth layer is enhanced, and the strength and the elongation of the conveyor belt can be enhanced to a certain extent.
(3) Oleic acid amide was used as a lubricant. The oleamide has good lubricating effect on the surface of the rubber, can reduce viscosity, is favorable for dispersion, can be quickly separated out on the surface when being added into covering rubber, forms an isolating film with lubricating property between a conveying belt and materials, and reduces surface friction. At the same time, the perfluorocopolymer is added. The oleic acid amide and the perfluorocopolymer are mixed to improve the anti-adhesion effect by interacting with the rubber.
(4) The upper covering glue and the lower covering glue are coated with the anti-adhesion film. The polytetrafluoroethylene serving as a high polymer material has a longer molecular chain segment and can block the permeation of water molecules; and the micro-nano second-order composite surface structure formed by the anti-adhesion film keeps the form and stability of water drops on the surface of the micro-nano second-order composite surface structure. This shows that the anti-adhesion film can maintain the original hydrophobic structure for a long time without being damaged, and has good hydrophobic stability and good anti-adhesion effect. The surface of the anti-adhesion membrane is of a micro-nano double-layer rough structure, and micro-nano particles are uniformly dispersed. The rough structure of the anti-adhesion film enables the contact area of the surface and air to be larger, when liquid contacts the surface of the anti-adhesion film, gas is arranged between the liquid and the surface for blocking, the contact angle of the liquid is increased, the anti-adhesion film has excellent characteristics of water resistance, fog resistance, snow resistance, pollution prevention, adhesion resistance, chemical corrosion resistance and the like, material adhesion can be effectively prevented, and the anti-adhesion film is beneficial to industrial use.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
Example 1
The method comprises the following steps: adding 100g of methanol and 10g of sodium hydrosulfide into a reactor, heating to 55 ℃, slowly dropwise adding 10ml of 5-chloro isophthalic acid, reacting for 11 hours under the protection of nitrogen, vacuum drying, pouring ethanol, and vacuum drying to obtain 5-mercapto isophthalic acid; adding 100ml of acetone and 10g of chlorinated paraffin into a reactor, stirring, adding 12g of 5-mercaptoisophthalic acid and 20g of potassium tert-butoxide, and reacting for 11 hours at 70 ℃ under the protection of nitrogen; after the reaction is finished, extracting with ethanol, adjusting the pH value to 4 with hydrochloric acid, and drying in vacuum to obtain the plasticizer.
Step two: weighing 60g of tetramethylcyclotetrasiloxane and 30g of allyl glycidyl ether, introducing 20g of resorcinol under the protection of nitrogen, and adding a catalyst; heating to 55 ℃ at the speed of 3 ℃/min and reacting for 2.5 h; heating to 90 ℃ at the speed of 3 ℃/min and reacting for 2.5 h; distilling under reduced pressure until no low-boiling-point substances are distilled out to obtain the tackifier.
Step three: mixing 50g of natural rubber and 40g of polyvinyl chloride resin together, mixing for 3min, adding 3g of an anti-aging agent, 3g of a dispersing agent and 4g of a flame retardant, mixing for 3min, adding 15g of superfine activated pottery clay, mixing for 7min, adding 10g of a tackifier and 10g of a plasticizer, and mixing for 4min at 85 ℃; adding 6g of vulcanizing agent, and mixing for 7 min; and (5) discharging, cooling and standing for 7h to obtain upper adhesive and lower adhesive.
Step four: firstly, mixing 50g of butadiene rubber and 70g of styrene butadiene rubber, plasticating for 1-3 min, and controlling the temperature at 40 ℃; uniformly mixing 10g of fluorine-containing monomer, 5g of hydroxypropyl acrylate, 7g of methacrylic acid and 8.2g of aliphatic isocyanate curing agent, premixing 15ml of butyl acetate and 15g of dimethylbenzene to form a mixed solvent, heating to 95 ℃, and carrying out heat preservation reaction for 3.5 hours to obtain a perfluoro copolymer; adding the plasticated rubber into an internal mixer, sequentially adding 7g of zinc oxide, 6g of stearic acid, 15g of superfine activated clay, 15g of amine oleate and 20g of perfluoro copolymer, and mixing for 6 min; cooling the mixed rubber to room temperature, adding 20g of N-cyclohexyl-2-benzothiazole sulfonamide, controlling the temperature to be 90-110 ℃, and mixing for 2.5 min; discharging, cooling and standing for 7 h; and vulcanizing for 25min to obtain the upper covering glue and the lower covering glue.
Step five: 30g of micro-nano CaCO is added into 100mL of ethanol3Heating and stirring the powder, adding 70ml of ethanol solution of trimethyl methoxysilane, charging nitrogen, heating and stirring, reacting for 2.5h, taking out, filtering, and washing with ethanol; drying the washed filter cake for 2.5h under the vacuum condition of 55 ℃, and crushing and grinding the obtained solid; 50g of epoxy resin and 10ml of ethanol,Mixing 10ml of acetone solvent; adding 30g of polytetrafluoroethylene, mixing uniformly, adding 15g of modified micro-nano CaCO3Powder is evenly mixed; and coating the solution on the surfaces of the upper covering glue and the lower covering glue, and drying. And heating and laminating the upper covering rubber, the upper adhesive, the belt core, the lower adhesive and the lower covering rubber in sequence, wherein the laminating temperature is 180 ℃, and vulcanizing is carried out at 165 ℃ to obtain the anti-adhesion conveying belt.
Example 2
The method comprises the following steps: adding 100g of methanol and 10g of sodium hydrosulfide into a reactor, heating to 50 ℃, slowly dropwise adding 10ml of 5-chloro isophthalic acid, reacting for 10 hours under the protection of nitrogen, vacuum drying, pouring ethanol, and vacuum drying to obtain 5-mercapto isophthalic acid; adding 100ml of acetone and 10g of chlorinated paraffin into a reactor, stirring, adding 12g of 5-mercaptoisophthalic acid and 20g of potassium tert-butoxide, and reacting for 10 hours at 60 ℃ under the protection of nitrogen; after the reaction is finished, extracting with ethanol, adjusting the pH value to 4 with hydrochloric acid, and drying in vacuum to obtain the plasticizer.
Step two: weighing 60g of tetramethylcyclotetrasiloxane and 30g of allyl glycidyl ether, introducing 20g of resorcinol under the protection of nitrogen, and adding a catalyst; heating to 50 ℃ at the speed of 2 ℃/min and reacting for 2 h; heating to 80 ℃ at the speed of 2 ℃/min and reacting for 2 h; distilling under reduced pressure until no low-boiling-point substances are distilled out to obtain the tackifier.
Step three: mixing 50g of natural rubber and 40g of polyvinyl chloride resin together, mixing for 3min, adding 3g of an anti-aging agent, 3g of a dispersing agent and 4g of a flame retardant, mixing for 2min, adding 15g of superfine activated pottery clay, mixing for 6min, adding 10g of a tackifier and 10g of a plasticizer, and mixing for 3min at the temperature of 80 ℃; adding 6g of vulcanizing agent, and mixing for 6 min; and (5) discharging, cooling and standing for 6h to obtain upper adhesive and lower adhesive.
Step four: firstly, 50g of butadiene rubber and 70g of styrene butadiene rubber are mixed and plasticated for 1min, and the temperature is controlled at 30 ℃; uniformly mixing 10g of fluorine-containing monomer, 5g of hydroxypropyl acrylate, 7g of methacrylic acid and 8.2g of aliphatic isocyanate curing agent, premixing 15ml of butyl acetate and 15g of dimethylbenzene to form a mixed solvent, heating to 90 ℃, and carrying out heat preservation reaction for 3 hours to obtain a perfluoro copolymer; adding the plasticated rubber into an internal mixer, sequentially adding 7g of zinc oxide, 6g of stearic acid, 15g of superfine activated clay, 15g of amine oleate and 20g of perfluoro copolymer, and mixing for 5 min; cooling the mixed rubber to room temperature, adding 20g of N-cyclohexyl-2-benzothiazole sulfonamide, controlling the temperature at 90 ℃, and mixing for 2 min; discharging, cooling and standing for 6 h; and vulcanizing for 20min to obtain an upper covering adhesive and a lower covering adhesive.
Step five: 30g of micro-nano CaCO is added into 100mL of ethanol3Heating and stirring the powder, adding 70ml of ethanol solution of trimethyl methoxysilane, charging nitrogen, heating and stirring, reacting for 2 hours, taking out, filtering, and washing with ethanol; drying the washed filter cake for 2h under the vacuum condition of 50 ℃, and crushing and grinding the obtained solid; mixing 50g of epoxy resin with 10ml of ethanol and 10ml of acetone solvent; adding 30g of polytetrafluoroethylene, mixing uniformly, adding 15g of modified micro-nano CaCO3Powder is evenly mixed; and coating the solution on the surfaces of the upper covering glue and the lower covering glue, and drying. And heating and laminating the upper covering rubber, the upper adhesive, the belt core, the lower adhesive and the lower covering rubber in sequence, wherein the laminating temperature is 170 ℃, vulcanizing the belt core, and the vulcanizing temperature is 160 ℃, so as to obtain the anti-adhesion conveying belt.
Example 3
The method comprises the following steps: adding 100g of methanol and 10g of sodium hydrosulfide into a reactor, heating to 60 ℃, slowly dropwise adding 10ml of 5-chloro isophthalic acid, reacting for 12 hours under the protection of nitrogen, vacuum drying, pouring ethanol, and vacuum drying to obtain 5-mercapto isophthalic acid; adding 100ml of acetone and 10g of chlorinated paraffin into a reactor, stirring, adding 12g of 5-mercaptoisophthalic acid and 20g of potassium tert-butoxide, and reacting for 12 hours at 80 ℃ under the protection of nitrogen; after the reaction is finished, extracting with ethanol, adjusting the pH value to 4 with hydrochloric acid, and drying in vacuum to obtain the plasticizer.
Step two: weighing 60g of tetramethylcyclotetrasiloxane and 30g of allyl glycidyl ether, introducing 20g of resorcinol under the protection of nitrogen, and adding a catalyst; heating to 60 ℃ at the speed of 4 ℃/min and reacting for 3 h; heating to 100 ℃ at the speed of 4 ℃/min and reacting for 3 hours; distilling under reduced pressure until no low-boiling-point substances are distilled out to obtain the tackifier.
Step three: mixing 50g of natural rubber and 40g of polyvinyl chloride resin together, mixing for 4min, adding 3g of an anti-aging agent, 3g of a dispersing agent and 4g of a flame retardant, mixing for 4min, adding 15g of superfine activated pottery clay, mixing for 8min, adding 10g of a tackifier and 10g of a plasticizer, and mixing for 5min at 90 ℃; adding 6g of vulcanizing agent, and mixing for 8 min; and (5) discharging, cooling and standing for 7h to obtain upper adhesive and lower adhesive.
Step four: firstly, 50g of butadiene rubber and 70g of styrene butadiene rubber are mixed and plasticated for 3min, and the temperature is controlled at 50 ℃; uniformly mixing 10g of fluorine-containing monomer, 5g of hydroxypropyl acrylate, 7g of methacrylic acid and 8.2g of aliphatic isocyanate curing agent, premixing 15ml of butyl acetate and 15g of dimethylbenzene to form a mixed solvent, heating to 100 ℃, and carrying out heat preservation reaction for 4 hours to obtain a perfluoro copolymer; adding the plasticated rubber into an internal mixer, sequentially adding 7g of zinc oxide, 6g of stearic acid, 15g of superfine activated clay, 15g of amine oleate and 20g of perfluoro copolymer, and mixing for 7 min; cooling the mixed rubber to room temperature, adding 20g of N-cyclohexyl-2-benzothiazole sulfonamide, controlling the temperature at 110 ℃, and mixing for 3 min; discharging, cooling and standing for 8 hours; and vulcanizing for 30min to obtain an upper covering adhesive and a lower covering adhesive.
Step five: 30g of micro-nano CaCO is added into 100mL of ethanol3Heating and stirring the powder, adding 70ml of ethanol solution of trimethyl methoxysilane, charging nitrogen, heating and stirring, reacting for 3 hours, taking out, filtering, and washing with ethanol; drying the washed filter cake for 3h under the vacuum condition of 60 ℃, and crushing and grinding the obtained solid; mixing 50g of epoxy resin with 10ml of ethanol and 10ml of acetone solvent; adding 30g of polytetrafluoroethylene, mixing uniformly, adding 15g of modified micro-nano CaCO3Powder is evenly mixed; and coating the solution on the surfaces of the upper covering glue and the lower covering glue, and drying. And heating and laminating the upper covering rubber, the upper adhesive, the belt core, the lower adhesive and the lower covering rubber in sequence, wherein the laminating temperature is 190 ℃, vulcanizing, and the vulcanizing temperature is 170 ℃, so as to obtain the anti-adhesion conveying belt.
Example 4: the procedure of example 1 was repeated except that the fine reactive clay was not added to the coating composition.
The method comprises the following steps: adding 100g of methanol and 10g of sodium hydrosulfide into a reactor, heating to 55 ℃, slowly dropwise adding 10ml of 5-chloro isophthalic acid, reacting for 11 hours under the protection of nitrogen, vacuum drying, pouring ethanol, and vacuum drying to obtain 5-mercapto isophthalic acid; adding 100ml of acetone and 10g of chlorinated paraffin into a reactor, stirring, adding 12g of 5-mercaptoisophthalic acid and 20g of potassium tert-butoxide, and reacting for 11 hours at 70 ℃ under the protection of nitrogen; after the reaction is finished, extracting with ethanol, adjusting the pH value to 4 with hydrochloric acid, and drying in vacuum to obtain the plasticizer.
Step two: weighing 60g of tetramethylcyclotetrasiloxane and 30g of allyl glycidyl ether, introducing 20g of resorcinol under the protection of nitrogen, and adding a catalyst; heating to 55 ℃ at the speed of 3 ℃/min and reacting for 2.5 h; heating to 90 ℃ at the speed of 3 ℃/min and reacting for 2.5 h; distilling under reduced pressure until no low-boiling-point substances are distilled out to obtain the tackifier.
Step three: mixing 50g of natural rubber and 40g of polyvinyl chloride resin together, mixing for 3min, adding 3g of an anti-aging agent, 3g of a dispersing agent and 4g of a flame retardant, mixing for 3min, adding 15g of superfine activated pottery clay, mixing for 7min, adding 10g of a tackifier and 10g of a plasticizer, and mixing for 4min at 85 ℃; adding 6g of vulcanizing agent, and mixing for 7 min; and (5) discharging, cooling and standing for 7h to obtain upper adhesive and lower adhesive.
Step four: firstly, mixing 50g of butadiene rubber and 70g of styrene butadiene rubber, plasticating for 1-3 min, and controlling the temperature at 40 ℃; uniformly mixing 10g of fluorine-containing monomer, 5g of hydroxypropyl acrylate, 7g of methacrylic acid and 8.2g of aliphatic isocyanate curing agent, premixing 15ml of butyl acetate and 15g of dimethylbenzene to form a mixed solvent, heating to 95 ℃, and carrying out heat preservation reaction for 3.5 hours to obtain a perfluoro copolymer; adding the plasticated rubber into an internal mixer, sequentially adding 7g of zinc oxide, 6g of stearic acid, 15g of superfine activated clay, 15g of amine oleate and 20g of perfluoro copolymer, and mixing for 6 min; cooling the mixed rubber to room temperature, adding 20g of N-cyclohexyl-2-benzothiazole sulfonamide, controlling the temperature to be 90-110 ℃, and mixing for 2.5 min; discharging, cooling and standing for 7 h; and vulcanizing for 25min to obtain the upper covering glue and the lower covering glue.
Step five: 30g of micro-nano CaCO is added into 100mL of ethanol3Heating and stirring the powder, adding 70ml of ethanol solution of trimethyl methoxysilane, charging nitrogen, heating and stirring, reacting for 2.5h, taking out, filtering, and washing with ethanol; will be washedDrying the filter cake for 2.5h under the vacuum condition of 55 ℃, and crushing and grinding the obtained solid; mixing 50g of epoxy resin with 10ml of ethanol and 10ml of acetone solvent; adding 30g of polytetrafluoroethylene, mixing uniformly, adding 15g of modified micro-nano CaCO3Powder is evenly mixed; and coating the solution on the surfaces of the upper covering glue and the lower covering glue, and drying. And heating and laminating the upper covering rubber, the upper adhesive, the belt core, the lower adhesive and the lower covering rubber in sequence, wherein the laminating temperature is 180 ℃, and vulcanizing is carried out at 165 ℃ to obtain the anti-adhesion conveying belt.
Example 5: the procedure of example 1 was repeated except that no oleamide was added.
The method comprises the following steps: adding 100g of methanol and 10g of sodium hydrosulfide into a reactor, heating to 55 ℃, slowly dropwise adding 10ml of 5-chloro isophthalic acid, reacting for 11 hours under the protection of nitrogen, vacuum drying, pouring ethanol, and vacuum drying to obtain 5-mercapto isophthalic acid; adding 100ml of acetone and 10g of chlorinated paraffin into a reactor, stirring, adding 12g of 5-mercaptoisophthalic acid and 20g of potassium tert-butoxide, and reacting for 11 hours at 70 ℃ under the protection of nitrogen; after the reaction is finished, extracting with ethanol, adjusting the pH value to 4 with hydrochloric acid, and drying in vacuum to obtain the plasticizer.
Step two: weighing 60g of tetramethylcyclotetrasiloxane and 30g of allyl glycidyl ether, introducing 20g of resorcinol under the protection of nitrogen, and adding a catalyst; heating to 55 ℃ at the speed of 3 ℃/min and reacting for 2.5 h; heating to 90 ℃ at the speed of 3 ℃/min and reacting for 2.5 h; distilling under reduced pressure until no low-boiling-point substances are distilled out to obtain the tackifier.
Step three: mixing 50g of natural rubber and 40g of polyvinyl chloride resin together, mixing for 3min, adding 3g of an anti-aging agent, 3g of a dispersing agent and 4g of a flame retardant, mixing for 3min, adding 15g of superfine activated pottery clay, mixing for 7min, adding 10g of a tackifier and 10g of a plasticizer, and mixing for 4min at 85 ℃; adding 6g of vulcanizing agent, and mixing for 7 min; and (5) discharging, cooling and standing for 7h to obtain upper adhesive and lower adhesive.
Step four: firstly, mixing 50g of butadiene rubber and 70g of styrene butadiene rubber, plasticating for 1-3 min, and controlling the temperature at 40 ℃; uniformly mixing 10g of fluorine-containing monomer, 5g of hydroxypropyl acrylate, 7g of methacrylic acid and 8.2g of aliphatic isocyanate curing agent, premixing 15ml of butyl acetate and 15g of dimethylbenzene to form a mixed solvent, heating to 95 ℃, and carrying out heat preservation reaction for 3.5 hours to obtain a perfluoro copolymer; adding the plasticated rubber into an internal mixer, sequentially adding 7g of zinc oxide, 6g of stearic acid, 15g of superfine activated clay and 20g of perfluoro copolymer, and mixing for 6 min; cooling the mixed rubber to room temperature, adding 20g of N-cyclohexyl-2-benzothiazole sulfonamide, controlling the temperature to be 90-110 ℃, and mixing for 2.5 min; discharging, cooling and standing for 7 h; and vulcanizing for 25min to obtain the upper covering glue and the lower covering glue.
Step five: 30g of micro-nano CaCO is added into 100mL of ethanol3Heating and stirring the powder, adding 70ml of ethanol solution of trimethyl methoxysilane, charging nitrogen, heating and stirring, reacting for 2.5h, taking out, filtering, and washing with ethanol; drying the washed filter cake for 2.5h under the vacuum condition of 55 ℃, and crushing and grinding the obtained solid; mixing 50g of epoxy resin with 10ml of ethanol and 10ml of acetone solvent; adding 30g of polytetrafluoroethylene, mixing uniformly, adding 15g of modified micro-nano CaCO3Powder is evenly mixed; and coating the solution on the surfaces of the upper covering glue and the lower covering glue, and drying. And heating and laminating the upper covering rubber, the upper adhesive, the belt core, the lower adhesive and the lower covering rubber in sequence, wherein the laminating temperature is 180 ℃, and vulcanizing is carried out at 165 ℃ to obtain the anti-adhesion conveying belt.
Example 6: the same procedure as in example 1 was repeated except that no perfluorocopolymer was added.
Example 7: the same procedure as in example 1 was repeated except that the anti-adhesion film was not coated with the upper and lower cover glues.
Experiment 1: the average value of the interlayer adhesive strength required according to GB/T7984-2001, general-purpose fabric core conveyor belt with rubber or plastic cover layer, is not less than 4.5N/mm. The anti-adhesion conveyer belts prepared in examples 1 to 4 were used to test the adhesion strength between the adhesive layers. The results obtained are as follows:
Figure BDA0003396658100000081
Figure BDA0003396658100000091
experiment 2: the contact angle formed by the surface of the anti-adhesion conveyor belt prepared in examples 1 to 7 and water drops is measured to determine whether the anti-adhesion conveyor belt has anti-adhesion property. The results obtained are as follows:
example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7
Contact angle 121.8° 121.8° 121.8° 120.3° 110.7° 112.7° 107.6°
And (4) conclusion: the contact angle between the surface and water is 10-90 degrees, the surface is hydrophilic, and the contact angle between the surface and water is 90-150 degrees, the surface is hydrophobic. The hydrophilicity is poor in anti-adhesion performance, and the hydrophobicity indicates that the conveying belt is not easy to stick materials. The addition of oleamide and perfluoro copolymer in examples 5 to 6 increases the contact angle between the surface and water, and has a certain effect on adhesion prevention. From the embodiment 7, the coating of the anti-adhesion film on the covering glue has the largest influence on the anti-adhesion performance of the conveyer belt, and the micro-nano second-order composite surface structure formed by the anti-adhesion film keeps the form and stability of water drops on the surface of the micro-nano second-order composite surface structure. Can keep the original hydrophobic structure for a long time without being damaged, and has better hydrophobic stability and good anti-adhesion effect. The rough structure of the anti-adhesion film enables the contact area of the surface and air to be larger, when liquid contacts the surface of the anti-adhesion film, gas is arranged between the liquid and the surface for blocking, the contact angle of the liquid is increased, the material adhesion can be effectively prevented, and the industrial transportation and use are facilitated.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A preparation process of an anti-adhesion conveying belt is characterized by comprising the following steps: the method comprises the following steps: and heating and laminating the upper covering rubber, the upper adhesive, the nylon belt core, the lower adhesive and the lower covering rubber in sequence, wherein the laminating temperature is 170-190 ℃, vulcanizing the materials, and the vulcanizing temperature is 160-170 ℃, so as to obtain the anti-adhesion conveying belt.
2. The process for preparing an anti-adhesion conveying belt according to claim 1, wherein: the preparation method of the upper adhesive tape and the lower adhesive tape comprises the following steps: mixing natural rubber and polyvinyl chloride resin together, mixing for 2-4 min, adding an anti-aging agent, a dispersing agent and a flame retardant, mixing for 2-4 min, adding superfine activated pottery clay, mixing for 6-8 min, adding a tackifier and a plasticizer, and mixing for 3-5 min at the temperature of 80-90 ℃; adding a vulcanizing agent, and mixing for 6-8 min; and (5) discharging, cooling and placing for 6-8 hours.
3. The process for preparing an anti-adhesion conveying belt according to claim 2, wherein: the preparation method of the plasticizer comprises the following steps: the method comprises the following steps:
the method comprises the following steps: adding methanol and sodium hydrosulfide, heating to 50-60 ℃, dropwise adding 5-chloro isophthalic acid, reacting for 10-12 h under the protection of nitrogen, vacuum drying, pouring ethanol, and vacuum drying to obtain 5-mercapto isophthalic acid;
step two: adding acetone and chlorinated paraffin, stirring, adding 5-mercaptoisophthalic acid and potassium tert-butoxide, and reacting for 10-12 h at 60-80 ℃ under the protection of nitrogen; after the reaction is finished, extracting with ethanol, adjusting the pH value to 4 with hydrochloric acid, and drying in vacuum to obtain the plasticizer.
4. The process for preparing an anti-adhesion conveying belt according to claim 2, wherein: the preparation method of the tackifier comprises the following steps: weighing tetramethylcyclotetrasiloxane and allyl glycidyl ether, introducing nitrogen into resorcinol for protection, and adding a catalyst; heating to 50-60 ℃ at the speed of 2 ℃/min and reacting for 2-3 h; heating to 80-100 ℃ at the speed of 2-5 ℃/min and reacting for 2-3 h; and distilling under reduced pressure to obtain the tackifier.
5. The process for preparing an anti-adhesion conveying belt according to claim 1, wherein: the preparation method of the upper covering glue and the lower covering glue comprises the following steps:
the method comprises the following steps: firstly, mixing butadiene rubber and styrene butadiene rubber, plasticating for 1-3 min, and controlling the temperature at 30-50 ℃;
step two: uniformly mixing a fluorine-containing monomer, hydroxypropyl acrylate, methacrylic acid and an aliphatic isocyanate curing agent, premixing butyl acetate and xylene to form a mixed solvent, heating to 90-100 ℃, and carrying out heat preservation reaction for 3-4 hours to obtain a perfluoro copolymer;
step three: adding the plasticated rubber into an internal mixer, sequentially adding zinc oxide, stearic acid, superfine activated clay, a perfluoro copolymer and a lubricant, and mixing for 5-7 min; cooling the mixed rubber to room temperature, adding N-cyclohexyl-2-benzothiazole sulfonamide, controlling the temperature to be 90-110 ℃, and mixing for 2-3 min; discharging, cooling and standing for 6-8 h; and vulcanizing for 20-30 min to obtain the upper covering glue and the lower covering glue.
6. The process for preparing an anti-adhesion conveying belt according to claim 5, wherein: in step three, the lubricant is oleamide.
7. The process for preparing an anti-adhesion conveying belt according to claim 5, wherein: the upper covering glue and the lower covering glue are wrapped with anti-adhesion films.
8. The process according to claim 7, wherein the step of preparing the anti-adhesion conveyor belt comprises the following steps: the preparation method of the anti-adhesion film comprises the following steps: the method comprises the following steps:
the method comprises the following steps: adding micro-nano grade CaCO into ethanol3Heating and stirring the powder, adding an ethanol solution of trimethyl methoxysilane, filling nitrogen, heating and stirring, reacting for 2-3 h, taking out, performing suction filtration, and washing with ethanol; drying the washed filter cake for 2-3 h under the vacuum condition of 50-60 ℃, and crushing and grinding the obtained solid;
step two: mixing epoxy resin emulsion, ethanol and acetone solvent to obtain a premixed solution; mixing polytetrafluoroethylene and premixed solution uniformly, adding modified micro-nano CaCO3Uniformly mixing the powder to obtain a composite solution; and (3) uniformly coating the composite solution on the surfaces of the upper covering glue and the lower covering glue, and drying.
9. The anti-adhesion conveying belt prepared according to the preparation process of the anti-adhesion conveying belt in any one of embodiments 1 to 8.
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