CN110845810A - High-temperature corrosion-resistant conveying belt and preparation method thereof - Google Patents
High-temperature corrosion-resistant conveying belt and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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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
- B65G15/34—Belts or like endless load-carriers made of rubber or plastics with reinforcing layers, e.g. of fabric
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a high-temperature corrosion-resistant conveying belt and a preparation method thereof, relates to the technical field of conveying belts, and solves the problem that cracks are easily generated on the surface of the conveying belt under the action of a large force due to poor corrosion resistance of the conveying belt at high temperature. A high-temperature corrosion-resistant conveying belt comprises the following components in parts by weight: 30-50 parts of polyvinyl chloride; 20-40 parts of nitrile rubber; 10-18 parts of a thermoplastic polyurethane elastomer; 6-8 parts of PU glue; 40-50 parts of skeleton fabric; 8-16 parts of dioctyl phthalate; 4-8 parts of zinc borate; 2-3 parts of paraffin oil; 1-1.5 parts of sulfur; 0.5-0.7 part of sodium dithiocarbamate; 3-5 parts of aluminum silicate; 7-13 parts of blast furnace slag micro powder; 12-16 parts of reinforcing filler; 4-6 parts of a stabilizer. The high-temperature corrosion-resistant conveying belt has good corrosion resistance at high temperature, is not easy to generate cracks under the action of large force, and has good stability as a whole.
Description
Technical Field
The invention relates to the technical field of conveying belts, in particular to a high-temperature corrosion-resistant conveying belt and a preparation method 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. Meanwhile, the conveying belt is widely applied to occasions with short conveying distance and small conveying amount in the industries of cement, coking, metallurgy, chemical engineering, steel and the like.
The invention discloses a covering rubber for an impact-resistant tear-resistant steel wire rope core conveying belt in a Chinese patent with the publication number of CN105330906A, which comprises the following components in parts by weight: 45-60 parts of smoked sheet rubber, 20-30 parts of butadiene rubber, 15-20 parts of high impact polystyrene, 1.5-3 parts of sulfur, 15-20 parts of an active agent, 3.5-5 parts of an accelerator, 10-15 parts of amorphous silicon dioxide, 5-8 parts of polyurethane resin, 45-60 parts of medium super wear-resistant carbon black N22045, 2.5-3 parts of an anti-aging agent, 3-4 parts of microcrystalline wax, 2-5 parts of carbon five petroleum resin and 10-15 parts of a rubber anti-tearing agent.
In the patent, high-resistance polystyrene is adopted, and compounding agents such as amorphous silicon dioxide are used in combination, so that the impact resistance and tear resistance of the covering adhesive are improved; in addition, by studying the influence of the mixing initial temperature, the rubber discharge temperature and the rotor speed of the internal mixer on the dispersibility of the filler in the covering rubber, the comprehensive mechanical properties of the covering rubber, such as tensile strength, stress at definite elongation, tear strength, impact strength and the like, are further improved, but the covering rubber has poor corrosion resistance at high temperature, so that when a conveying belt is subjected to a large force, cracks are easily generated on the surface, and the whole application effect is poor, therefore, a new scheme needs to be provided to solve the problems.
Disclosure of Invention
In view of the problems in the prior art, an object of the present invention is to provide a high-temperature corrosion-resistant conveyor belt, which has good corrosion resistance at high temperature, is not easy to crack when subjected to a large force, and has good stability as a whole, so as to solve the above technical problems.
In order to achieve the first purpose, the invention provides the following technical scheme:
a high-temperature corrosion-resistant conveying belt comprises the following components in parts by weight:
30-50 parts of polyvinyl chloride;
20-40 parts of nitrile rubber;
10-18 parts of a thermoplastic polyurethane elastomer;
6-8 parts of PU glue;
40-50 parts of skeleton fabric;
8-16 parts of dioctyl phthalate;
4-8 parts of zinc borate;
2-3 parts of paraffin oil;
1-1.5 parts of sulfur;
0.5-0.7 part of sodium dithiocarbamate;
3-5 parts of aluminum silicate;
7-13 parts of blast furnace slag micro powder;
12-16 parts of reinforcing filler;
4-6 parts of a stabilizer.
By adopting the technical scheme, the nitrile rubber has the advantages of excellent oil resistance, higher wear resistance, better heat resistance and strong bonding force; the thermoplastic polyurethane elastomer has the advantages of high hardness, good strength, high elasticity, high wear resistance, tear resistance, aging resistance, ozone resistance, radiation resistance, good conductivity and the like; the nitrile rubber, the thermoplastic polyurethane elastomer and the polyvinyl chloride are mixed to form a stable mixed base material with good compatibility. Dioctyl phthalate is a good plasticizer, zinc borate and paraffin oil can respectively play a good flame retardant role and an anti-aging role, the stability of the overall quality of the high-temperature corrosion-resistant conveyer belt can be guaranteed, and sodium dithiocarbamate is a vulcanization accelerator and can act together with sulfur, so that the high-temperature corrosion-resistant conveyer belt has high quality.
The aluminum silicate has good thermal stability, chemical stability and fireproof performance, is a good filling agent, has good compatibility with other component raw materials, and has a superfine grid structure, so that the conveying belt can keep good structural stability under a high-temperature condition, and cracks are not easy to generate when a large external force is applied. The blast furnace slag micro powder has good high temperature resistance and corrosion resistance, can improve the overall structural strength of the conveying belt, can improve the binding force among raw materials of each component of the conveying belt, can effectively utilize industrial waste resources, and is beneficial to realizing green environmental protection. Meanwhile, the blast furnace slag micro powder and the aluminum silicate can play a good role in compounding and synergism, so that the corrosion resistance of the high-temperature corrosion-resistant conveyer belt at high temperature can be greatly improved, cracks are not easy to generate under the action of a large force, and the whole conveyer belt has good stability.
More preferably, 4-9 parts by weight of functional additives are added into the components of the high-temperature corrosion-resistant conveying belt, and the functional additives are spun-silk powder and Fe3A mixture of Al intermetallic compounds, and sericite powder and Fe3The weight part ratio of the Al intermetallic compound is (3-5) to 1.
By adopting the technical scheme, the spun silk powder has good acid-base resistance and oil resistance, the tearing strength of the high-temperature corrosion-resistant conveying belt can be improved, and Fe3The Al intermetallic compound can form a layer of compact aluminum oxide protective film on the surface of the high-temperature corrosion-resistant conveyer belt at high temperature, and can form a mutually-penetrated multistage reinforcing network on the surface and inside of the high-temperature corrosion-resistant conveyer belt under the synergistic action of the sericin powder, so that the corrosion resistance of the high-temperature corrosion-resistant conveyer belt at high temperature is greatly improved, cracks are not easily generated under the action of larger force, and the whole high-temperature corrosion-resistant conveyer belt has good stability.
More preferably, 6-14 parts by weight of mineral wool fiber is also added into the components of the high-temperature corrosion-resistant conveying belt.
Through adopting above-mentioned technical scheme, the mineral wool fibre has good thermal stability, and acid and alkali corrosion resistance is good, and when it received high temperature influence, its surface can form the high silicon layer that has adsorption efficiency, can firmly adsorb each component raw materials, and then makes high temperature corrosion resistant type conveyer belt when receiving great external force, and its surface also is difficult for producing the crack, and overall stability improves greatly.
Further preferably, the framework fabric is any one of polyester fabric, polyester-cotton fabric, aramid fabric and acrylic fabric.
By adopting the technical scheme, the polyester fabric has good storage property and corrosion resistance, and is solid and durable; the polyester-cotton fabric is woven by polyester staple fiber and cotton fiber blended yarns, and has good wear resistance; the aramid fiber fabric has excellent flame retardant property and good overall thermal stability; the acrylic fabric has good heat resistance and good dimensional stability. Therefore, any one of polyester fabric, polyester-cotton fabric, aramid fabric and acrylic fabric is selected as the framework fabric, and the high-temperature corrosion-resistant conveying belt with good and stable quality can be obtained.
More preferably, the reinforcing filler is selected from one or more of boron nitride, corundum powder, expanded perlite and silicon dioxide.
By adopting the technical scheme, the boron nitride, the corundum powder, the expanded perlite and the silicon dioxide are all good wear-resistant fillers, and the components and the raw materials have good dispersibility and filling property, so that the high-temperature corrosion-resistant conveying belt can keep good structural stability, can exert stable high-temperature corrosion resistance in the using process, and is not easy to generate cracks.
More preferably, the stabilizer is any one of magnesium stearate, alkyl vinyl ester, phenyl ortho-hydroxybenzoate and polyethylene wax.
By adopting the technical scheme, the stabilizer has good associativity with the raw materials of the components, can slow down reaction, keep chemical balance, reduce surface tension, prevent light, thermal decomposition or oxidative decomposition, and further enable the high-temperature corrosion-resistant conveyor belt to integrally keep higher quality.
The second purpose of the invention is to provide a preparation method of the high-temperature corrosion-resistant conveyer belt, the high-temperature corrosion-resistant conveyer belt prepared by the method has good corrosion resistance at high temperature, is not easy to generate cracks under the action of large force, and has good stability as a whole.
In order to achieve the second purpose, the invention provides the following technical scheme, which comprises the following steps:
step one, drying the fabric: drying the skeleton fabric in corresponding parts by weight, and placing for later use;
step two, brushing glue and curing: then uniformly blade-coating PU glue in corresponding weight parts on the front and back surfaces of the framework fabric to form an adhesive layer;
step three, melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, aluminum silicate, blast furnace slag micro powder, a reinforcing filler and a stabilizer in corresponding parts by weight, and then melting and extruding to obtain a rubber layer;
step four, laminating and hot pressing: and (3) attaching the rubber layer to one side of the adhesive layer, which is far away from the framework fabric, performing hot-pressing attachment, and cooling to obtain the high-temperature corrosion-resistant conveying belt.
By adopting the technical scheme, the preparation method is simple to operate, high in production efficiency, free of great pollution to the environment and good in applicability in the actual use process.
Further preferably, the preparation method of the high-temperature corrosion-resistant conveying belt specifically comprises the following steps:
step one, drying the fabric: drying the skeleton fabric in the corresponding weight part at the drying temperature of 150 ℃ and 170 ℃ for 5-10min, and standing for later use;
step two, brushing glue and curing: then uniformly blade-coating PU glue in corresponding weight parts on the front side and the back side of the framework fabric, and brushing at the temperature of 150 ℃ and 170 ℃ to form an adhesive layer;
step three, melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, aluminum silicate, blast furnace slag micro powder, a reinforcing filler and a stabilizer in corresponding parts by weight, wherein the stirring speed is 1500-2500rpm, the stirring time is 10-20min, the melt extrusion is carried out, the melt extrusion temperature is 165-175 ℃, and the screw extrusion rotation speed is 25-35rpm, so as to obtain a rubber layer;
step four, laminating and hot pressing: and (3) attaching the rubber layer to one side of the adhesive layer, which is far away from the framework fabric, performing hot-pressing attachment, wherein the hot-pressing temperature is 80-90 ℃, the hot-pressing time is 3-5min, and the pressure is 20-30MPa, and cooling to obtain the high-temperature corrosion-resistant conveying belt.
By adopting the technical scheme, the temperature-resistant variable conveyer belt with good quality can be prepared by selecting the parameter control in each operation process.
In summary, compared with the prior art, the invention has the following beneficial effects:
(1) the aluminum silicate and the blast furnace slag micro powder have good high temperature resistance and corrosion resistance, have good compatibility with other raw materials, can play a good role in compounding and synergism, can greatly improve the corrosion resistance of the high-temperature corrosion-resistant conveyer belt at high temperature, and are not easy to crack when being subjected to a large force, so that the whole body has good stability;
(2) adding the mixture of the sericite powder and the Fe3The functional assistant consisting of the Al intermetallic compound can form a multi-stage reinforcing network which is mutually penetrated on the surface and the inside of the high-temperature corrosion-resistant conveyer belt, so that the corrosion resistance of the high-temperature corrosion-resistant conveyer belt at high temperature is greatly improved, cracks are not easy to generate under the action of a large force, and the whole body has good stability;
(3) mineral wool fibers are added, when the mineral wool fibers are influenced by high temperature, a high silicon layer with adsorption capacity can be formed on the surface of the mineral wool fibers, raw materials of all components can be firmly adsorbed, and further, when the high-temperature corrosion-resistant conveying belt is subjected to large external force, cracks are not easily generated on the surface of the high-temperature corrosion-resistant conveying belt, and the overall stability is greatly improved.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
Example 1: the high-temperature corrosion-resistant conveying belt comprises the following components in parts by weight as shown in Table 1 and is prepared by the following steps:
step one, drying the fabric: drying the polyester fabric in corresponding parts by weight at 160 ℃ for 7.5min, and standing for later use;
step two, brushing glue and curing: then uniformly blade-coating PU glue in corresponding parts by weight on the front side and the back side of the polyester fabric, wherein the brush coating temperature is 160 ℃, and forming an adhesive layer;
step three, melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, aluminum silicate, blast furnace slag micro powder, boron nitride and magnesium stearate in corresponding parts by weight, wherein the stirring speed is 2000rpm, the stirring time is 15min, the melt extrusion is carried out, the melt extrusion temperature is 170 ℃, and the screw extrusion rotation speed is 30rpm, so as to obtain a rubber layer;
step four, laminating and hot pressing: and (3) attaching the rubber layer to one side of the adhesive layer, which is far away from the polyester fabric, performing hot-pressing attachment, wherein the hot-pressing temperature is 85 ℃, the hot-pressing time is 4min, and the pressure is 25MPa, and cooling to obtain the high-temperature corrosion-resistant conveying belt.
Note: the polyvinyl chloride obtained in the above step is purchased from Guanrun plastic raw material Jing Ming Dynasty in Shenzhen City, and the trade mark is PVC 25P; the nitrile rubber is purchased from Jingjiang, Congtao New Material science and technology Limited and has the model of P8300; the thermoplastic polyurethane elastomer is purchased from Yixinyuan plastics chemical engineering Limited company in Shenzhen, and has the brand number of E664D; the PU adhesive is purchased from Hui Rui adhesive industry Co., Ltd, Dongguan city, and has the mark of HR-708; the polyester fabric was a polyester glass cloth available from engineering materials, inc.
Example 2: the high-temperature corrosion-resistant conveying belt is different from the conveying belt in embodiment 1 in that the conveying belt specifically comprises the following steps:
step one, drying the fabric: drying the polyester fabric in parts by weight at 150 ℃ for 0min, and standing for later use;
step two, brushing glue and curing: then uniformly blade-coating PU glue in corresponding parts by weight on the front side and the back side of the polyester fabric, wherein the brush coating temperature is 150 ℃, and forming an adhesive layer;
step three, melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, aluminum silicate, blast furnace slag micro powder, boron nitride and magnesium stearate in corresponding parts by weight, wherein the stirring speed is 1500rpm, the stirring time is 20min, the melt extrusion is carried out, the melt extrusion temperature is 165 ℃, and the screw extrusion rotation speed is 35rpm, so as to obtain a rubber layer;
step four, laminating and hot pressing: and (3) attaching the rubber layer to one side of the adhesive layer, which is far away from the polyester fabric, performing hot-pressing attachment, wherein the hot-pressing temperature is 80 ℃, the hot-pressing time is 5min, and the pressure is 20MPa, and cooling to obtain the high-temperature corrosion-resistant conveying belt.
Example 3: the high-temperature corrosion-resistant conveying belt is different from the conveying belt in embodiment 1 in that the conveying belt specifically comprises the following steps:
step one, drying the fabric: drying the polyester fabric in parts by weight at 170 ℃ for 5min, and standing for later use;
step two, brushing glue and curing: then uniformly blade-coating PU glue in corresponding parts by weight on the front side and the back side of the polyester fabric, wherein the brush coating temperature is 170 ℃, and forming an adhesive layer;
step three, melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, aluminum silicate, blast furnace slag micro powder, boron nitride and magnesium stearate in corresponding parts by weight, wherein the stirring speed is 2500rpm, the stirring time is 10min, the melt extrusion is carried out, the melt extrusion temperature is 175 ℃, and the screw extrusion rotation speed is 25rpm, so as to obtain a rubber layer;
step four, laminating and hot pressing: and (3) attaching the rubber layer to one side of the adhesive layer, which is far away from the polyester fabric, performing hot-pressing attachment, wherein the hot-pressing temperature is 90 ℃, the hot-pressing time is 3min, and the pressure is 30MPa, and cooling to obtain the high-temperature corrosion-resistant conveying belt.
Examples 4 to 5: a high-temperature corrosion-resistant conveyor belt, which is different from example 1 in that each component and the corresponding parts by weight thereof are shown in table 1.
TABLE 1 Components and parts by weight of examples 1-5
Example 6: a high-temperature corrosion-resistant conveying belt is different from the conveying belt in the embodiment 1 in that the polyester fabric in the step one is replaced by polyester-cotton fabric with equal mass, and the polyester-cotton fabric is purchased from Wuxi Dayuan Special fabrics Co.
Example 7: the high-temperature corrosion-resistant conveying belt is different from the conveying belt in the embodiment 1 in that the polyester fabric in the step one is replaced by acrylic fabric with equal mass, and the acrylic fabric is purchased from Wuxi Dayuan Special fabrics Co.
Example 8: the high-temperature corrosion-resistant conveying belt is different from the conveying belt in the embodiment 1 in that the polyester fabric in the step one is replaced by aramid fabric with equal mass, and the aramid fabric is purchased from Wuxi Dayuan Special fabrics Co.
Example 9: a high-temperature corrosion-resistant conveyor belt, which is different from the conveyor belt in the embodiment 1 in that boron nitride in the third step is replaced by equal-mass corundum powder.
Example 10: the high-temperature corrosion-resistant conveying belt is different from the conveying belt in the embodiment 1 in that boron nitride in the step three is replaced by a mixture of equal-mass corundum powder and expanded perlite, and the mass ratio of the corundum powder to the expanded perlite is 1: 3.
Example 11: the high-temperature corrosion-resistant conveying belt is different from the conveying belt in the embodiment 1 in that boron nitride in the step three is replaced by a mixture of equal-mass corundum powder, expanded perlite and silicon dioxide, and the mass ratio of the corundum powder to the graphite powder to the silicon dioxide is 3: 2: 3.
example 12: a high-temperature corrosion-resistant conveyor belt, which is different from example 1 in that magnesium stearate in step three is replaced by alkyl vinyl ester of equal mass.
Example 13: a high-temperature corrosion-resistant conveying belt is different from the conveying belt in example 1 in that magnesium stearate in the step III is replaced by phenyl o-hydroxybenzoate with equal mass.
Example 14: a high-temperature corrosion-resistant conveying belt is different from that in the embodiment 1 in that magnesium stearate in the step three is replaced by polyethylene wax with equal mass.
Example 15: the high-temperature corrosion-resistant conveying belt is different from the conveying belt in the embodiment 1 in that the third specific step is melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, aluminum silicate, blast furnace slag micro powder, boron nitride, magnesium stearate and 6.5 parts of functional additives in parts by weight, wherein the functional additives comprise sericite powder and Fe in a weight ratio of 4:13And mixing Al intermetallic compounds, wherein the stirring speed is 2000rpm, the stirring time is 15min, and performing melt extrusion, wherein the melt extrusion temperature is 170 ℃, and the screw extrusion rotating speed is 30rpm to obtain the rubber layer.
Example 16: a high-temperature corrosion-resistant conveyor belt, which differs from example 15 in that the third specific arrangement is melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, aluminum silicate, blast furnace slag micro powder, boron nitride, magnesium stearate and 9 parts of functional additives in parts by weight, wherein the functional additives comprise spun silk powder and Fe in a weight ratio of 4:13And mixing Al intermetallic compounds, wherein the stirring speed is 2000rpm, the stirring time is 15min, and performing melt extrusion, wherein the melt extrusion temperature is 170 ℃, and the screw extrusion rotating speed is 30rpm to obtain the rubber layer.
Example 17: heightThe temperature corrosion-resistant conveyor belt is different from the conveyor belt in example 15 in that the third specific step is melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, aluminum silicate, blast furnace slag micro powder, boron nitride, magnesium stearate and 4 parts of functional additives in parts by weight, wherein the functional additives comprise spun silk powder and Fe in a weight ratio of 4:13And mixing Al intermetallic compounds, wherein the stirring speed is 2000rpm, the stirring time is 15min, and performing melt extrusion, wherein the melt extrusion temperature is 170 ℃, and the screw extrusion rotating speed is 30rpm to obtain the rubber layer.
Example 18: a high-temperature corrosion-resistant conveyor belt, which differs from example 15 in that the third specific arrangement is melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, aluminum silicate, blast furnace slag micro powder, boron nitride, magnesium stearate and 6.5 parts of functional additives in parts by weight, wherein the functional additives comprise sericite powder and Fe in a weight ratio of 3:13And mixing Al intermetallic compounds, wherein the stirring speed is 2000rpm, the stirring time is 15min, and performing melt extrusion, wherein the melt extrusion temperature is 170 ℃, and the screw extrusion rotating speed is 30rpm to obtain the rubber layer.
Example 19: a high-temperature corrosion-resistant conveyor belt, which differs from example 15 in that the third specific arrangement is melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, aluminum silicate, blast furnace slag micro powder, boron nitride, magnesium stearate and 6.5 parts of functional additives in parts by weight, wherein the functional additives comprise sericite powder and Fe in a weight ratio of 5:13And mixing Al intermetallic compounds, wherein the stirring speed is 2000rpm, the stirring time is 15min, and performing melt extrusion, wherein the melt extrusion temperature is 170 ℃, and the screw extrusion rotating speed is 30rpm to obtain the rubber layer.
Example 20: the high-temperature corrosion-resistant conveying belt is different from the conveying belt in the embodiment 1 in that the third specific step is melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, aluminum silicate, blast furnace slag micro powder, boron nitride, magnesium stearate and 10 parts of mineral wool fibers in parts by weight, wherein the stirring speed is 2000rpm, the stirring time is 15min, the melt extrusion is carried out, the melt extrusion temperature is 170 ℃, and the screw extrusion rotation speed is 30rpm, so as to obtain the rubber layer.
Example 21: the high-temperature corrosion-resistant conveying belt is different from the conveying belt in the embodiment 1 in that the third specific step is melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, aluminum silicate, blast furnace slag micro powder, boron nitride, magnesium stearate and 6 parts of mineral wool fibers in corresponding parts by weight, wherein the stirring speed is 2000rpm, the stirring time is 15min, the melt extrusion is carried out, the melt extrusion temperature is 170 ℃, and the screw extrusion rotation speed is 30rpm, so as to obtain the rubber layer.
Example 22: the high-temperature corrosion-resistant conveying belt is different from the conveying belt in the embodiment 1 in that the third specific step is melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, aluminum silicate, blast furnace slag micro powder, boron nitride, magnesium stearate and 14 parts of mineral wool fibers in parts by weight, wherein the stirring speed is 2000rpm, the stirring time is 15min, the melt extrusion is carried out, the melt extrusion temperature is 170 ℃, and the screw extrusion rotation speed is 30rpm, so as to obtain the rubber layer.
Comparative example 1: the high-temperature corrosion-resistant conveying belt is different from the conveying belt in the embodiment 1 in that the third specific step is melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, aluminum silicate, boron nitride and magnesium stearate in corresponding parts by weight, wherein the stirring speed is 2000rpm, the stirring time is 15min, and performing melt extrusion at the temperature of 170 ℃ and the screw extrusion rotation speed of 30rpm to obtain the rubber layer.
Comparative example 2: the high-temperature corrosion-resistant conveying belt is different from the conveying belt in the embodiment 1 in that the third specific step is melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, blast furnace slag micro powder, boron nitride and magnesium stearate in corresponding parts by weight, stirring at 2000rpm for 15min, and performing melt extrusion at 170 ℃ at a screw extrusion rotation speed of 30rpm to obtain the rubber layer.
Comparative example 3: the high-temperature corrosion-resistant conveying belt is different from the conveying belt in the embodiment 1 in that the third specific step is melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, boron nitride and magnesium stearate in corresponding parts by weight, stirring at 2000rpm for 15min, and performing melt extrusion at 170 ℃ at a screw extrusion rotation speed of 30rpm to obtain the rubber layer.
Comparative example 4: a high-temperature corrosion-resistant conveyor belt, which differs from example 15 in that the third specific arrangement is melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, aluminum silicate, blast furnace slag micro powder, boron nitride, magnesium stearate and 6.5 parts of functional additives in parts by weight, wherein the functional additives are spun silk powder, the stirring speed is 2000rpm, the stirring time is 15min, and the rubber layer is obtained by melt extrusion, the melt extrusion temperature is 170 ℃, and the screw extrusion rotation speed is 30 rpm.
Comparative example 5: a high-temperature corrosion-resistant conveyor belt, which differs from example 15 in that the third specific arrangement is melt extrusion: polyvinyl chloride and nitrile rubber in corresponding parts by weightGlue, thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, aluminum silicate, blast furnace slag micro powder, boron nitride, magnesium stearate and 6.5 parts of functional additive are fully stirred and mixed, and the functional additive is Fe3And (3) stirring the Al intermetallic compound at 2000rpm for 15min, and performing melt extrusion at 170 ℃ at a screw extrusion rotation speed of 30rpm to obtain the rubber layer.
Performance testing
Test samples: the high-temperature corrosion-resistant conveyor belts obtained in examples 1 to 22 were used as test samples 1 to 22, and the high-temperature corrosion-resistant conveyor belts obtained in comparative examples 1 to 5 were used as control samples 1 to 5.
The test method comprises the following steps: taking the test samples 1-22 and the control samples 1-5 with the same size, placing the test samples and the control samples in the same closed environment, setting the environment temperature to be 80 ℃, controlling the environment pH value to be 5.5, taking out after lasting for 5 hours, transferring the test samples and the control samples to another closed environment, setting the environment temperature to be 80 ℃, controlling the environment pH value to be 7.5, and taking out after lasting for 5 hours. The tear strengths of test samples 1-22 and control samples 1-5 were then measured according to ISO Standard 505-1999 determination of tear Strength of conveyor Fabric conveyor belts and recorded.
And (3) test results: the test results of the test samples 1 to 22 and the control samples 1 to 5 are shown in Table 2. As can be seen from Table 2, the comparison of the test results of the test samples 1 to 5 and the comparison samples 1 to 3 shows that the corrosion resistance of the high-temperature corrosion-resistant conveyor belt at high temperature can be improved when the aluminum silicate and the blast furnace slag micro powder are used alone, cracks are not easily generated in the use process, and the aluminum silicate and the blast furnace slag micro powder have high tear strength. The comparison of the test results of the sample samples 6-14 and the test sample 1 shows that the framework fabric, the reinforcing filler and the stabilizer disclosed by the invention are all suitable for preparing the high-temperature corrosion-resistant conveyer belt, and the obtained high-temperature corrosion-resistant conveyer belt has good and stable tear strength. The test results of sample 15-19 and test sample 1 were compared, and the test results were obtained by adding sericite powder and Fe3The functional assistant composed of Al intermetallic compound greatly improves the corrosion resistance and tear strength of the high-temperature corrosion-resistant conveyer belt at high temperature. The test results of the sample samples 20-22 and the test sample 1 are compared, and the corrosion resistance of the high-temperature corrosion-resistant conveyer belt at high temperature can be greatly improved by adding the mineral wool fibers, so that the integral tear resistance is improved. From the comparison of the test results of the test sample 15 and the control samples 4 to 5, sericite powder and Fe3The Al intermetallic compounds can play a good role in compounding and synergism, and when the Al intermetallic compounds are mixed as functional additives, the Al-.
TABLE 2 test results of test samples 1-22 and control samples 1-5
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (8)
1. The high-temperature corrosion-resistant conveying belt is characterized by comprising the following components in parts by weight:
30-50 parts of polyvinyl chloride;
20-40 parts of nitrile rubber;
10-18 parts of a thermoplastic polyurethane elastomer;
6-8 parts of PU glue;
40-50 parts of skeleton fabric;
8-16 parts of dioctyl phthalate;
4-8 parts of zinc borate;
2-3 parts of paraffin oil;
1-1.5 parts of sulfur;
0.5-0.7 part of sodium dithiocarbamate;
3-5 parts of aluminum silicate;
7-13 parts of blast furnace slag micro powder;
12-16 parts of reinforcing filler;
4-6 parts of a stabilizer.
2. The high-temperature corrosion-resistant conveying belt according to claim 1, wherein 4-9 parts by weight of functional additives are further added into the components of the high-temperature corrosion-resistant conveying belt, and the functional additives are spun silk powder and Fe3A mixture of Al intermetallic compounds, and sericite powder and Fe3The weight part ratio of the Al intermetallic compound is (3-5) to 1.
3. The high-temperature corrosion-resistant conveying belt according to claim 1, wherein 6-14 parts by weight of mineral wool fibers are further added to the components of the high-temperature corrosion-resistant conveying belt.
4. The high-temperature corrosion-resistant conveying belt according to claim 1, wherein the framework fabric is any one of polyester fabric, polyester-cotton fabric, aramid fabric and acrylic fabric.
5. The high-temperature corrosion-resistant conveying belt according to claim 1, wherein the reinforcing filler is selected from any one or more of boron nitride, corundum powder, expanded perlite and silicon dioxide.
6. The high-temperature corrosion-resistant conveying belt according to claim 1, wherein the stabilizer is any one of magnesium stearate, alkyl vinyl ester, phenyl ortho-hydroxybenzoate and polyethylene wax.
7. A method of manufacturing a high-temperature corrosion-resistant conveyor belt according to claim 1, comprising the steps of:
step one, drying the fabric: drying the skeleton fabric in corresponding parts by weight, and placing for later use;
step two, brushing glue and curing: then uniformly blade-coating PU glue in corresponding weight parts on the front and back surfaces of the framework fabric to form an adhesive layer;
step three, melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, aluminum silicate, blast furnace slag micro powder, a reinforcing filler and a stabilizer in corresponding parts by weight, and then melting and extruding to obtain a rubber layer;
step four, laminating and hot pressing: and (3) attaching the rubber layer to one side of the adhesive layer, which is far away from the framework fabric, performing hot-pressing attachment, and cooling to obtain the high-temperature corrosion-resistant conveying belt.
8. The method for preparing a high-temperature corrosion-resistant conveying belt according to claim 7, which comprises the following steps:
step one, drying the fabric: drying the skeleton fabric in the corresponding weight part at the drying temperature of 150 ℃ and 170 ℃ for 5-10min, and standing for later use;
step two, brushing glue and curing: then uniformly blade-coating PU glue in corresponding weight parts on the front side and the back side of the framework fabric, and brushing at the temperature of 150 ℃ and 170 ℃ to form an adhesive layer;
step three, melt extrusion: fully stirring and mixing polyvinyl chloride, nitrile rubber, a thermoplastic polyurethane elastomer, dioctyl phthalate, zinc borate, paraffin oil, sulfur, sodium dithiocarbamate, aluminum silicate, blast furnace slag micro powder, a reinforcing filler and a stabilizer in corresponding parts by weight, wherein the stirring speed is 1500-2500rpm, the stirring time is 10-20min, the melt extrusion is carried out, the melt extrusion temperature is 165-175 ℃, and the screw extrusion rotation speed is 25-35rpm, so as to obtain a rubber layer;
step four, laminating and hot pressing: and (3) attaching the rubber layer to one side of the adhesive layer, which is far away from the framework fabric, performing hot-pressing attachment, wherein the hot-pressing temperature is 80-90 ℃, the hot-pressing time is 3-5min, and the pressure is 20-30MPa, and cooling to obtain the high-temperature corrosion-resistant conveying belt.
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