CN114772162A - Oil-resistant light conveying belt and preparation method of oil-resistant layer - Google Patents
Oil-resistant light conveying belt and preparation method of oil-resistant layer Download PDFInfo
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- CN114772162A CN114772162A CN202210448129.3A CN202210448129A CN114772162A CN 114772162 A CN114772162 A CN 114772162A CN 202210448129 A CN202210448129 A CN 202210448129A CN 114772162 A CN114772162 A CN 114772162A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
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- 238000002156 mixing Methods 0.000 claims abstract description 33
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- 239000004014 plasticizer Substances 0.000 claims abstract description 18
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 17
- 229920002857 polybutadiene Polymers 0.000 claims abstract description 17
- 229920001084 poly(chloroprene) Polymers 0.000 claims abstract description 16
- 239000006229 carbon black Substances 0.000 claims abstract description 15
- 229920000728 polyester Polymers 0.000 claims abstract description 13
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 7
- 239000004760 aramid Substances 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 72
- 239000003921 oil Substances 0.000 claims description 56
- 239000003795 chemical substances by application Substances 0.000 claims description 46
- 229920001971 elastomer Polymers 0.000 claims description 25
- 239000005060 rubber Substances 0.000 claims description 25
- 230000003712 anti-aging effect Effects 0.000 claims description 23
- 238000013016 damping Methods 0.000 claims description 15
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- 239000011247 coating layer Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 7
- OUBMGJOQLXMSNT-UHFFFAOYSA-N N-isopropyl-N'-phenyl-p-phenylenediamine Chemical compound C1=CC(NC(C)C)=CC=C1NC1=CC=CC=C1 OUBMGJOQLXMSNT-UHFFFAOYSA-N 0.000 claims description 6
- 239000004952 Polyamide Substances 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 230000032683 aging Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 229920002647 polyamide Polymers 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 3
- UTGQNNCQYDRXCH-UHFFFAOYSA-N N,N'-diphenyl-1,4-phenylenediamine Chemical compound C=1C=C(NC=2C=CC=CC=2)C=CC=1NC1=CC=CC=C1 UTGQNNCQYDRXCH-UHFFFAOYSA-N 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000000499 gel Substances 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 229920000058 polyacrylate Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 150000003505 terpenes Chemical class 0.000 claims description 3
- 235000007586 terpenes Nutrition 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 4
- 238000009941 weaving Methods 0.000 abstract description 3
- 235000019198 oils Nutrition 0.000 description 42
- 239000000463 material Substances 0.000 description 5
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- 238000010521 absorption reaction Methods 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 150000001408 amides Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 235000015895 biscuits Nutrition 0.000 description 1
- 235000012970 cakes Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000007766 curtain coating Methods 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
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- 239000004744 fabric Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000001301 oxygen Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
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- 238000007761 roller coating Methods 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- B65G15/38—Belts or like endless load-carriers made of rubber or plastics with flame-resistant layers, e.g. of asbestos, glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L15/00—Compositions of rubber derivatives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
Abstract
The invention relates to the technical field of conveying belts, and discloses an oil-resistant light conveying belt and a preparation method of an oil-resistant layer. According to the invention, the nitrile rubber is modified by polar groups and is matched with chloroprene rubber, butadiene rubber, carbon black, a macromolecular plasticizer and the like for use, so that the oil resistance, the wear resistance, the flame retardance, the low-temperature resistance, the wet skid resistance and the fatigue resistance are enhanced, and the mechanical properties of the conveying belt, such as thermal stability, chemical stability, wear resistance and the like, are enhanced by blending and weaving polyester fibers and aramid fibers into the framework layer in a staggered manner, so that the oil resistance of the whole light conveying belt is improved, and the wear resistance is also improved.
Description
Technical Field
The invention relates to the technical field of conveying belts, in particular to an oil-resistant light conveying belt and a preparation method of an oil-resistant layer.
Background
The light conveyer belt is used for conveying various articles, is a fine product in the conveyer belt, generally takes fabrics of cotton, polyamide, polyester fiber and the like as framework materials, takes rubber or plastic as a covering layer, has smooth surface and various patterns, and has the characteristics of light and thin belt body, good dimensional stability, high precision, bright color, high tension, safety, no toxicity and the like.
However, the tolerance of the common light conveyor belt to various oils and organic solvents is poor, and when transporting materials containing oils, such as biscuits, candies, cakes and the like, the oils have swelling property and corrosiveness to the surface adhesive of the conveyor belt body, so that the volume of the surface adhesive is increased, the structure is loose, the physical and mechanical properties are reduced, and finally the service life of the product is shortened.
Disclosure of Invention
In order to improve the oil resistance of the surface of the light conveyor belt, the technical scheme of the invention provides an oil-resistant light conveyor belt and a preparation method of an oil-resistant layer. The technical scheme is as follows:
the invention provides an oil-resistant light conveying belt which sequentially comprises an oil-resistant layer, a damping layer, an upper coating layer, an upper supporting layer, a framework layer, a lower supporting layer and a lower coating layer from top to bottom; the oil-resistant layer comprises, by weight, 70-80 parts of modified nitrile rubber, 5-10 parts of chloroprene rubber, 10-20 parts of butadiene rubber, 2-5 parts of carbon black, 5-10 parts of a plasticizer, 8-15 parts of a vulcanizing agent and 1-5 parts of an anti-aging agent.
Preferably, the modified nitrile rubber is one of cyano-modified nitrile rubber, ester-modified nitrile rubber and amide-modified nitrile rubber.
Preferably, the framework layer is formed by blending and interweaving polyester fibers and aramid fibers.
Preferably, the shock absorption layer adopts one of non-woven fabrics, silica gel and PU gel, and a plurality of shock absorption balls are arranged inside the shock absorption layer.
Preferably, the surface of going up supporting layer and lower supporting layer comprises nonrust steel sheet, goes up the inside even bracing piece that is fixed with of supporting layer and lower supporting layer, is the V font between the bracing piece and connects, and it has the carbon fiber to fill around the bracing piece.
Preferably, the plasticizer is one or more of polyacrylate, dioctyl phthalate and terpene resin.
Preferably, the vulcanizing agent comprises magnesium oxide, zinc oxide, vulcanizing agent HTDM or vulcanizing agent PDM or vulcanizing agent DCP.
Preferably, the anti-aging agent is one of an anti-aging agent RD, an anti-aging agent DD, an anti-aging agent DPPD and an anti-aging agent 4010 NA/IPPD.
Preferably, the upper coating layer and the lower coating layer are woven by blending polyamide fibers and polyester fibers.
The invention also provides a preparation method of the oil-resistant layer, which is applied to the oil-resistant light conveyor belt and comprises the following steps:
s1: feeding the modified nitrile rubber, the butadiene rubber, the chloroprene rubber, the anti-aging agent and the plasticizer into a mixing roll, plastifying at 30-40 ℃, uniformly mixing to obtain plastified rubber, and waiting for 3-6 hours for later use;
s2: adding carbon black into the plasticated rubber, and banburying for 15-25 min at the temperature of 110-120 ℃;
s3: discharging rubber into an open mill after banburying, wherein the rubber discharging temperature is set to be 110-140 ℃;
s4: adding a vulcanizing agent, and continuously mixing to obtain master batch, wherein the mixing temperature is set to be 45-65 ℃;
s5: coating the master batch on a damping layer, drying, vulcanizing and cooling to obtain an oil-resistant layer, wherein the vulcanizing temperature is set to be 160-180 ℃, the vulcanizing time is set to be 15-25 min, and the vulcanizing pressure is set to be 15-25 Mpa.
Compared with the prior art, the invention has the advantages that:
1) the polar group is used for modifying the nitrile rubber, so that the oil resistance of the nitrile rubber to nonpolar oils is improved, and meanwhile, the nitrile rubber is matched with chloroprene rubber, butadiene rubber, carbon black, a macromolecular plasticizer and the like for use, so that the oil resistance, the flame retardance, the wear resistance, the low-temperature resistance, the wet skid resistance and the fatigue resistance are enhanced, and the service life of the light conveying belt is prolonged.
2) The framework layer formed by blending and interweaving the polyester fibers and the aramid fibers can enhance the mechanical properties of the light conveying belt, such as thermal stability, chemical stability, wear resistance, flame retardance and the like.
3) Through the design of shock attenuation ball in the buffer layer, can evenly undertake the material and give the pressure of light conveyer belt, improve the shock attenuation performance of conveyer belt.
4) Through the design of bracing piece in last supporting layer and the lower supporting layer, can strengthen the bearing capacity and the stability of light conveyer belt.
Detailed Description
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
According to one embodiment of the invention, the oil-resistant layer comprises an oil-resistant layer, a damping layer, an upper coating layer, an upper support layer, a framework layer, a lower support layer and a lower coating layer from top to bottom in sequence.
In the embodiment, the oil-resistant layer comprises, by weight, 70-80 parts of modified nitrile rubber, 5-10 parts of chloroprene rubber, 10-20 parts of butadiene rubber, 2-5 parts of carbon black, 5-10 parts of a plasticizer, 8-15 parts of a vulcanizing agent and 1-5 parts of an anti-aging agent; the preparation method comprises the following steps:
s1: feeding the modified nitrile rubber, the butadiene rubber, the chloroprene rubber, the anti-aging agent and the plasticizer into a mixing roll, plastifying at 30-40 ℃, uniformly mixing to obtain plastified rubber, and waiting for 3-6 hours for later use;
s2: adding carbon black into the rubber compound, and banburying for 15-25 min at the temperature of 110-120 ℃;
s3: discharging rubber into an open mill after banburying, wherein the rubber discharging temperature is set to be 110-140 ℃;
s4: adding a vulcanizing agent, and continuously mixing to obtain master batch, wherein the mixing temperature is set to be 45-65 ℃;
s5: coating the master batch on a damping layer, drying, vulcanizing and cooling to obtain an oil-resistant layer, wherein the vulcanizing temperature is set to be 160-180 ℃, the vulcanizing time is set to be 15-25 min, and the vulcanizing pressure is set to be 15-25 Mpa.
In this embodiment, the modified nitrile rubber is one of cyano-modified nitrile rubber, ester-modified nitrile rubber, and amide-modified nitrile rubber, where the nitrile rubber has a relatively good oil resistance, and the oil resistance of the nitrile rubber to nonpolar oil can be further improved by modifying polar groups such as cyano, ester, and amide. The nitrile rubber has weak elasticity and poor low-temperature resistance, and is easy to age under the action of ultraviolet rays or ozone, the chloroprene rubber has good physical and mechanical properties, is resistant to oil, heat, flame, sunlight and ozone, and the butadiene rubber has high elasticity, wear, cold, flexibility and the like, so that the defects of the nitrile rubber are overcome by adding the chloroprene rubber and the butadiene rubber, the oil resistance of the light conveying belt can be improved, the cold, heat and aging resistance can be enhanced, and the service life of the light conveying belt is prolonged.
In the embodiment, the plasticizer is one or more of polyacrylate, dioctyl phthalate and terpene resin, and the macromolecular plasticizer, carbon black and the like are added to perform synergistic action with butadiene rubber and modified nitrile rubber so that the oil resistance and the wear resistance of the conveyer belt are enhanced; the vulcanizing agent comprises magnesium oxide, zinc oxide, vulcanizing agent HTDM or vulcanizing agent PDM or vulcanizing agent DCP; the anti-aging agent is one of an anti-aging agent RD, an anti-aging agent DD, an anti-aging agent DPPD and an anti-aging agent 4010 NA/IPPD.
In the embodiment, the damping layer is made of one of non-woven fabrics, silica gel and PU gel, and a plurality of damping balls are uniformly arranged in the damping layer, so that the pressure applied to the light conveying belt by materials can be uniformly borne, and the conveyed materials cannot be kept stable to cause collision damage; the master batch is coated on the shock-absorbing layer by roller coating, spraying, curtain coating or dip coating, and then is transferred into a blast oven for high-temperature vulcanization by heating in a drying tunnel, and the oil-resistant layer can be obtained.
In the embodiment, the upper coating layer and the lower coating layer are both formed by blending and weaving polyamide fibers and polyester fibers, the polyamide fibers are high in strength and good in wear resistance and chemical stability, the polyester fibers have good air permeability and ultraviolet resistance, and the light conveying belt is formed by blending and weaving the polyamide fibers and the polyester fibers, so that the light conveying belt is wear-resistant, chemical-resistant and anti-aging and air-permeable.
In the embodiment, the surfaces of the upper supporting layer and the lower supporting layer are made of stainless steel sheets, supporting rods are uniformly fixed inside the upper supporting layer and the lower supporting layer, the supporting rods are connected in a V shape, and carbon fibers are filled around the supporting rods; mutual fixed connection between the bracing piece presents the triangle between the inside of upper supporting layer and lower supporting layer and nonrust steel sheet and fixes, and is more firm, can strengthen the bearing capacity and the stability of light conveyer belt.
In the embodiment, the framework layer is formed by blending and interweaving the polyester fiber and the aramid fiber, the aramid fiber is high in strength, high-temperature resistant, good in fireproof and flame retardant properties, the polyester fiber is good in oil resistance, high in strength, good in heat resistance and heat insulation, and the polyester fiber and the aramid fiber are blended and interweaved to enhance the mechanical properties of the light conveying belt, such as heat stability, flame retardance, wear resistance and the like.
Example 1
The oil-resistant layer comprises, by weight, 70 parts of modified nitrile rubber, 5 parts of chloroprene rubber, 10 parts of butadiene rubber, 2 parts of carbon black, 5 parts of a plasticizer, 8 parts of a vulcanizing agent and 1 part of an anti-aging agent.
The preparation method of the oil-resistant layer comprises the following steps:
s1: feeding the modified nitrile rubber, butadiene rubber, chloroprene rubber, an anti-aging agent and a plasticizer into a mixing roll for plastication at 30 ℃, uniformly mixing to obtain plasticated rubber, and waiting for 3 hours for later use;
s2: adding carbon black into the plasticated rubber, and banburying for 15min at the temperature of 110 ℃;
s3: discharging rubber into an open mill after banburying, wherein the rubber discharging temperature is set to be 110 ℃;
s4: adding a vulcanizing agent, and continuously mixing to obtain master batch, wherein the mixing temperature is set to 45 ℃;
s5: coating the master batch on a damping layer, drying, vulcanizing and cooling to obtain an oil-resistant layer, wherein the vulcanizing temperature is set to 160 ℃, the vulcanizing time is set to 15min, and the vulcanizing pressure is set to 15 Mpa.
Example 2
The oil-resistant layer comprises 80 parts by weight of modified nitrile rubber, 10 parts by weight of chloroprene rubber, 20 parts by weight of butadiene rubber, 5 parts by weight of carbon black, 10 parts by weight of plasticizer, 15 parts by weight of vulcanizing agent and 5 parts by weight of anti-aging agent.
The preparation method of the oil-resistant layer comprises the following steps:
s1: feeding the modified nitrile rubber, butadiene rubber, chloroprene rubber, an anti-aging agent and a plasticizer into a mixing roll for plastication at 40 ℃, uniformly mixing to obtain plasticated rubber, and waiting for 6 hours for later use;
s2: adding carbon black into the plasticated rubber, and banburying for 25min at the temperature of 120 ℃;
s3: discharging rubber into an open mill after banburying, wherein the rubber discharging temperature is set to be 140 ℃;
s4: adding a vulcanizing agent, and continuously mixing to obtain master batch, wherein the mixing temperature is set to 65 ℃;
s5: coating the master batch on a damping layer, drying, vulcanizing and cooling to obtain an oil-resistant layer, wherein the vulcanizing temperature is set to 180 ℃, the vulcanizing time is set to 25min, and the vulcanizing pressure is set to 25 Mpa.
Example 3
The oil-resistant layer comprises 75 parts by weight of modified nitrile rubber, 7 parts by weight of chloroprene rubber, 15 parts by weight of butadiene rubber, 4 parts by weight of carbon black, 8 parts by weight of plasticizer, 12 parts by weight of vulcanizing agent and 3 parts by weight of anti-aging agent.
The preparation method of the oil-resistant layer comprises the following steps:
s1: feeding the modified nitrile rubber, the butadiene rubber, the chloroprene rubber, the anti-aging agent and the plasticizer into a mixing roll for plastication at 35 ℃, uniformly mixing to obtain plasticated rubber, and waiting for 5 hours for later use;
s2: adding carbon black into the plasticated rubber, and banburying for 20min at the temperature of 115 ℃;
s3: discharging rubber into an open mill after banburying, wherein the rubber discharging temperature is set to 130 ℃;
s4: adding a vulcanizing agent, and continuously mixing to obtain master batch, wherein the mixing temperature is set to 55 ℃;
s5: coating the master batch on a damping layer, drying, vulcanizing and cooling to obtain an oil-resistant layer, wherein the vulcanizing temperature is set to be 170 ℃, the vulcanizing time is set to be 20min, and the vulcanizing pressure is set to be 20 Mpa.
TABLE 1 Performance test
As can be seen from the data in table 1, compared with the existing product, the volume change rate of the embodiment of the present invention after being soaked in 100 ℃ soybean oil for 100 hours is only about 3%, which is much less than 10%, and the embodiment of the present invention has good oil resistance; the oxygen index of the embodiment is also higher, and the flame retardant property is better; meanwhile, the tensile strength and the elongation at break of the embodiment are high, and the abrasion is low, so that the oil-resistant light conveying belt has excellent mechanical properties such as abrasion resistance.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (10)
1. An oil-resistant light-weight conveying belt is characterized by sequentially comprising an oil-resistant layer, a damping layer, an upper coating layer, an upper supporting layer, a framework layer, a lower supporting layer and a lower coating layer from top to bottom;
the oil-resistant layer comprises, by weight, 70-80 parts of modified nitrile rubber, 5-10 parts of chloroprene rubber, 10-20 parts of butadiene rubber, 2-5 parts of carbon black, 5-10 parts of a plasticizer, 8-15 parts of a vulcanizing agent and 1-5 parts of an anti-aging agent.
2. The oil-resistant lightweight conveyor belt according to claim 1, wherein the modified nitrile rubber is one of cyano-modified nitrile rubber, ester-modified nitrile rubber and amide-modified nitrile rubber.
3. The oil-resistant lightweight conveyor belt according to claim 1, wherein the framework layer is woven by blending and interlacing polyester fibers and aramid fibers.
4. The oil-resistant lightweight conveyor belt according to claim 1, wherein the damping layer is made of one of non-woven fabric, silica gel and PU gel, and a plurality of damping balls are arranged inside the damping layer.
5. The oil-resistant light conveying belt according to claim 1, wherein the surfaces of the upper supporting layer and the lower supporting layer are made of stainless steel sheets, supporting rods are uniformly fixed inside the upper supporting layer and the lower supporting layer, the supporting rods are connected in a V shape, and carbon fibers are filled around the supporting rods.
6. The oil-resistant light-weight conveying belt according to claim 1, wherein the plasticizer is one or more of polyacrylate, dioctyl phthalate and terpene resin.
7. The oil resistant lightweight conveyor belt of claim 1 wherein said vulcanizing agent comprises magnesium oxide, zinc oxide, vulcanizing agent HTDM or vulcanizing agent PDM or vulcanizing agent DCP.
8. The oil-resistant light-weight conveying belt according to claim 1, characterized in that the aging resistor is one of an aging resistor RD, an aging resistor DD, an aging resistor DPPD and an aging resistor 4010 NA/IPPD.
9. The oil-resistant light-weight conveying belt according to claim 1, characterized in that the upper coating layer and the lower coating layer are woven by blending polyamide fibers and polyester fibers.
10. The preparation method of the oil-resistant layer is applied to the oil-resistant light conveyor belt in claim 1, and is characterized by comprising the following steps of:
s1: feeding the modified nitrile rubber, the butadiene rubber, the chloroprene rubber, the anti-aging agent and the plasticizer into a mixing roll for plastication at 30-40 ℃, uniformly mixing to obtain plasticated rubber, and waiting for 3-6 hours for later use;
s2: adding the carbon black into the plasticated rubber, and banburying for 15-25 min, wherein the banburying temperature is set to be 110-120 ℃;
s3: discharging rubber into an open mill after banburying, wherein the rubber discharging temperature is set to be 110-140 ℃;
s4: adding a vulcanizing agent, and continuously mixing to obtain master batch, wherein the mixing temperature is set to be 45-65 ℃;
s5: and coating the master batch on the damping layer, drying, vulcanizing and cooling to obtain the oil-resistant layer, wherein the vulcanizing temperature is set to 160-180 ℃, the vulcanizing time is set to 15-25 min, and the vulcanizing pressure is set to 15-25 Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN102424237A (en) * | 2011-08-19 | 2012-04-25 | 安徽天地人科技集团输送带有限公司 | Flameretardant conveyor belt for aramid fiber core |
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