CN109705412A - A kind of oil resistant conveyer and its preparation process - Google Patents
A kind of oil resistant conveyer and its preparation process Download PDFInfo
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- CN109705412A CN109705412A CN201811564033.3A CN201811564033A CN109705412A CN 109705412 A CN109705412 A CN 109705412A CN 201811564033 A CN201811564033 A CN 201811564033A CN 109705412 A CN109705412 A CN 109705412A
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Abstract
The invention discloses a kind of oil resistant conveyer and its preparation processes, its key points of the technical solution are that a kind of oil resistant conveyer, including belt carcass, band core rubber and rubber cover, rubber cover includes upper rubber cover and lower rubber cover, and the rubber cover comprising following polymerizable raw material by forming: nitrile rubber, neoprene, chlorosulfonated polyethylene rubber, carbon black, composite flame-retardant agent, vulcanizing agent, promotor, activator, plasticizer, anti-aging agent and silane coupling agent；The composite flame-retardant agent includes that zinc borate, pentaerythritol phosphate, brominated epoxy resin and the white fused alumina micro mist that weight ratio is 1:2:2:1 mix；The silane coupling agent is vinyltriethoxysilane.Conveyer belt of the invention has excellent oil resistivity and anti-flammability, is used in combination by composite flame-retardant agent, silane coupling agent, dispersion degree of the composite flame-retardant agent in rubber can be improved, improves oil resistance, flame retardant property and the adhesive strength of rubber cover.
Description
Technical field
The present invention relates to conveyer belt technical fields, more specifically, it is related to a kind of oil resistant conveyer and its preparation process.
Background technique
Conveyer belt is also known as conveyer belt, is the composite article for carrying and transporting material, is widely used in cement, coke
Conveying distance is shorter in the industries such as change, metallurgy, chemical industry, steel, the lesser occasion of conveying capacity；The composition of conveyer belt generally comprises band
Core, band core rubber and rubber cover；Belt carcass is the skeleton of conveyer belt, for bearing whole loads when work, generally uses steel wire
Rope or fabric；Band core rubber is between belt carcass and rubber cover, for improving the adhesion strength between belt carcass and rubber cover；
Rubber cover is the protective layer of conveyer belt, is directly contacted with the cargo of transport, and higher intensity, wearability and resistance to old are needed
Change performance.
According to the usage of conveyer belt, oil resistant conveyer, heat resistance conveyor belt, cold-resistant conveyer belt, resistance to can be classified as
Low temperature conveyer belt, high temperature-resistance conveyor belt, acid and alkali-resistance conveyer belt, oil resistant conveyer, fire retarding conveying band and wear-resistant conveyor belt etc.；By
When common rubber conveyer belt and mineral oil contact, it may occur that the phenomenon that swelling, reduce the service life of conveyer belt, therefore work as
When transporting some materials containing mineral oil, need using the oil resistant conveyer that can resist mineral oil corrosion.
In general purpose rubber, oil resistance most preferably nitrile rubber, therefore traditional oil resistant conveyer is with butyronitrile rubber
Based on glue；But since mineral oil belongs to inflammable substance, and the oxygen index (OI) of nitrile rubber is only 19-22, belongs to combustible material,
When transporting mineral oil, if fire occurs, the intensity of a fire is difficult to control；Oil resistance is inferior to nitrile rubber in general purpose rubber
Neoprene, and the oxygen index (OI) of neoprene is 38-41, belongs to high nonflammable material, therefore in the environment for transporting mineral oil,
Neoprene with flame retardant property more meets the requirement of safety in production；But since the oil resistance of neoprene is lower than butyronitrile
Rubber still restricts its use in oil resistant conveyer, therefore how to mention while improving the oil resistance of conveyer belt
Its high flame retardant property, is a problem to be solved.
Summary of the invention
One of the objects of the present invention is to provide a kind of oil resistant conveyers, pass through nitrile rubber, neoprene and chlorine
Sulfonated polyethylene rubber blending makes conveyer belt obtained have good oil resistivity and flame retardant property；By composite flame-retardant agent,
Silane coupling agent is used in combination with substrate rubber, and dispersion of the composite flame-retardant agent in rubber can be improved, improve the anti-flammability of rubber cover
Energy and adhesive strength.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of oil resistant conveyer, including belt carcass, band core rubber and rubber cover, rubber cover include upper rubber cover and lower rubber cover, institute
It states rubber cover to be formed by the polymerizable raw material comprising following parts by weight: 50-60 parts of nitrile rubber, 20-25 parts of neoprene, chlorosulfonation
10-20 parts of polyethylene rubber, 40-50 parts of carbon black, 6-10 parts of composite flame-retardant agent, 2-4 parts of vulcanizing agent, 1-2 parts of promotor, activator
6-8 parts, 6-10 parts of plasticizer, 2-3 parts of anti-aging agent and 1-2 parts of silane coupling agent；The composite flame-retardant agent is comprising weight ratio
Zinc borate, pentaerythritol phosphate, brominated epoxy resin and the white fused alumina micro mist of 1:3:3:1 mixes；The silane is even
Connection agent is vinyltriethoxysilane.
By using above-mentioned technical proposal, nitrile rubber has excellent oil resistance, and neoprene has preferable resistance to
Oiliness energy and excellent flame retardant property, chlorosulfonated polyethylene rubber have excellent weatherability and chemical corrosion resistance
Can, also there is preferable lower temperature resistance, heat resistance, oil resistivity and flame resistance, pass through nitrile rubber, neoprene and chlorine sulphur
Change polyethylene rubber to be used in combination, makes conveyer belt obtained that there is good oil resistivity and flame retardant property；Pass through composite flame-retardant agent, silicon
Alkane coupling agent is used in combination with substrate rubber, and dispersion of the composite flame-retardant agent in rubber can be improved, improve the flame retardant property of rubber cover
And adhesive strength.
Further, the carbon black includes the high abrasion furnace black and semi-reinforcing furnace black that weight ratio is 1:3.
By using above-mentioned technical proposal, high wear-resistant carbon black belongs to hard (carbon) black, and the tensile strength of rubber can be improved, tear
Resistance to spalling and wear-resisting property；Semi-reinforcing hydrocarbon black is the principal item of soft carbon, and elasticity, the resistance to ag(e)ing of rubber can be improved
Energy and cold resistance；By the compounding of high wear-resistant carbon black and semi-reinforcing hydrocarbon black, tensile strength, the tearing of conveyer belt can be improved
Intensity, wear-resisting property, ageing-resistant performance and cold tolerance make up the defect that nitrile rubber intensity is low, cold resistance is poor.
Further, the vulcanizing agent includes the sulphur and magnesia that weight ratio is 3:1.
By using above-mentioned technical proposal, sulphur is good with the bond properties of sizing material as common vulcanizer,
Curingprocess rate is fast, and curing efficiency is high；The curingprocess rate of magnesia is slow, and the anti-scorch performance of sizing material can be improved, and can be absorbed
The hydrogen chloride gas and chlorine discharged in sulfidation improves production environment；It is used in combination, can be improved by sulphur and magnesia
Processing performance improves the utilization rate of sulphur, improves the degree of cross linking of rubber.
Further, the plasticizer includes the phosphate plasticizer and the plasticizer of class containing chlorine that weight ratio is 3:1.
By using above-mentioned technical proposal, phosphate plasticizer and the plasticizer of class containing chlorine are synthesis plasticizer, mainly
For the oil resistivity and flame retardant property of product to can be improved in the stronger nitrile rubber of polarity and neoprene.
Further, the phosphate plasticizer is tricresyl phosphate；The plasticizer of class containing chlorine is chlorinated paraffin.
By using above-mentioned technical proposal, product is can be improved in plasticizer of the tricresyl phosphate (TCP) as rubber
Flame retardant property, heat resistance, oil resistivity and point insulating performance；Chlorinated paraffin have low volatility, fire-retardant, electrical insulating property is good
The advantages of, with tricresyl phosphate and used time, there is synergistic effect, the oil resistance and anti-flammability of conveyer belt can be improved
Energy.
Further, the promotor includes the sulfenamide and Thiourea accelerator that weight ratio is 3:1.
By using above-mentioned technical proposal, sulfenamide belong to acid, alkali self and with type, with late effect property；Vulcanization is bent
Line is flat, vulcanizate good combination property, preferably cooperates with furnace black；Thiourea accelerator is suitable for neoprene, passes through secondary sulphur
Amides are used in combination with Thiourea accelerator, have synergistic effect, nitrile rubber, neoprene and the poly- second of chlorosulfonation can be improved
The curingprocess rate of alkene rubber.
Further, the sulfenamide is N- cyclohexyl -2-[4-morpholinodithio sulfenamide；The Thiourea accelerator
For ethylene thiourea.
By using above-mentioned technical proposal, rubber is can be improved in N- cyclohexyl -2-[4-morpholinodithio sulfenamide (accelerant CZ)
The hardness of glue product, ethylene thiourea (NA-22) are used as the dedicated promotor of neoprene；When N- cyclohexyl -2-[4-morpholinodithio
Sulfenamide and ethylene thiourea and used time, the sulphur of nitrile rubber, neoprene and chlorosulfonated polyethylene rubber can be improved
Change speed.
Further, the anti-aging agent is one of N- isopropyl-N '-diphenyl-para-phenylene diamine, 2-mercaptobenzimidazole
Or theirs is compound.
By using above-mentioned technical proposal, N- isopropyl-N '-diphenyl-para-phenylene diamine (antioxidant 4010NA) and 2- sulfydryl benzene
Parallel imidazoles (antioxidant MB) can for using nitrile rubber, neoprene and chlorosulfonated polyethylene rubber as in the product of substrate
To reduce destruction of the photooxidation to Mechanical Properties of Products, extend the storage and service life of product.
Further, described to be formed with core rubber by the polymerizable raw material comprising following parts by weight: 40-50 parts of butadiene rubber, fourth
30-40 parts of benzene rubber, 10-15 parts of coumarone indene resin, 3-5 parts of brominated epoxy resin, 2-4 parts of phenolic resin, resorcinol 2-4
Part, 15-20 parts of white carbon black, 0.5-1 parts of 2-mercaptobenzothiazole, N- isopropyl-N ' -1-2 parts of diphenyl-para-phenylene diamine, chlorinated paraffin
2-4 parts and 1-1.5 parts of sulphur.
It by using above-mentioned technical proposal, is used in combination by butadiene rubber and butadiene-styrene rubber, the band core rubber of preparation can have
There are good elasticity and adhesive force；Pass through coumarone indene resin, brominated epoxy resin and the phenolic resin in raw material, Ke Yiti
The bond strength of high rubber cover and belt carcass, and can also have certain flame retardant effect.
The second object of the present invention is to provide a kind of preparation process of oil resistant conveyer.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of preparation process of oil resistant conveyer, includes the following steps:
(1) preparation of rubber cover:
S1: modeling is practiced: taking 10-20 parts of 50-60 parts of nitrile rubber, 20-25 parts of neoprene, chlorosulfonated polyethylene rubber investment mills
In machine, moulding white silk temperature is 45-55 DEG C, and moulding the white silk time is 20-25min, obtains moulding experienced glue；
S2: one section mixing: by mould practice glue investment mixer in, 110-120 DEG C at a temperature of, mixing 1-2min；Then it puts into
40-50 parts of carbon black, 6-10 parts of plasticizer, 6-8 parts of activator, 2-3 parts of anti-aging agent, 6-10 parts of composite flame-retardant agent and silane coupled
1-2 parts of agent, smelting temperature is 135-145 DEG C, and after the 3-5min that turns refining, slice obtains one section of rubber compound；
S3: two-stage mixing: 2-4 parts of one section of rubber compound, 1-2 parts of promotor and vulcanizing agent are put into mixer again, mixing
Temperature is 120-130 DEG C, and turn refining 3-5min, roll spacing is adjusted to 6-10mm, slice obtains two-stage mixing glue；
S4: it slice: after two-stage mixing glue room temperature is parked 6-8h, places it in and squeezes out slice on extruder, extrusion pressure is
0.6-0.8MPa, extrusion temperature are 90-100 DEG C, obtain rubber cover；
(2) with the preparation of core rubber:
S1: modeling is practiced: take 40-50 part of nitrile rubber, in 30-40 part investment open mills of butadiene rubber, modeling white silk temperature is 45-55 DEG C,
It moulds and practices the time for 20-25min, obtain moulding experienced glue；
S2: one section mixing: by mould practice glue investment mixer in, 110-120 DEG C at a temperature of, mixing 1-2min；Then it puts into
10-15 parts of coumarone indene resin, 3-5 parts of brominated epoxy resin, 2-4 parts of phenolic resin, 2-4 parts of resorcinol, white carbon black 15-20
Part, N- isopropyl-N ' -1-2 parts of diphenyl-para-phenylene diamine and 2-4 parts of chlorinated paraffin, smelting temperature are 130-140 DEG C, and turn refining 3-
After 5min, slice obtains one section of rubber compound；
S3: one section of rubber compound, 0.5-1 parts of 2-mercaptobenzothiazole and 1-1.5 parts of sulphur two-stage mixing: are put into mixing again
In machine, smelting temperature is 130-140 DEG C, and turn refining 3-5min, roll spacing is adjusted to 3-5mm, slice obtains two-stage mixing glue；
S4: it slice: after two-stage mixing glue room temperature is parked 6-8h, places it in and squeezes out slice on extruder, extrusion pressure is
0.6-0.8MPa, extrusion temperature are 85-95 DEG C, obtain band core rubber；
(3) by upper rubber cover with core rubber, lower rubber cover with core rubber on workbench assembly, then by upper rubber cover with
Band core rubber, belt carcass, lower rubber cover obtain made-up belt with core rubber three's cold moudling；Then made-up belt is placed on vulcanizing press
Vulcanization, curing temperature are 140-150 DEG C, sulfide stress 10-15MPa, obtain oil resistant conveyer after cooling.
By using above-mentioned technical proposal, by with excellent oil resistivity and anti-flammability rubber cover with have it is good
Elasticity and adhesive strength band core rubber it is compound and then with belt carcass cold moudling, conveyer belt obtained, interfacial bonding strength
Height is not easy to be layered, and has good oil resistivity and flame retardant property, uses suitable for the environment for transporting mineral oil.
In conclusion the present invention has the advantages that compared with the prior art
1. being used in combination by nitrile rubber, neoprene and chlorosulfonated polyethylene rubber, there is conveyer belt obtained good
Oil resistivity and flame retardant property；It is used in combination by composite flame-retardant agent, silane coupling agent and substrate rubber, composite flame-retardant agent can be improved
Dispersion in rubber improves the flame retardant property and adhesive strength of rubber cover；
2. plasticizer of the tricresyl phosphate (TCP) as rubber, can be improved the flame retardant property, heat resistance, oil resistant of product
Property and point insulating performance；Chlorinated paraffin has the advantages that low volatility, fire-retardant, electrical insulating property is good, with phosphate trimethylbenzene
Ester and used time have synergistic effect, the oil resistance and flame retardant property of conveyer belt can be improved；
3. being used in combination by butadiene rubber and butadiene-styrene rubber, the band core rubber of preparation can have good elasticity and adhesive force；
By coumarone indene resin, brominated epoxy resin and the phenolic resin in raw material, the combination that rubber cover and belt carcass can be improved is strong
Degree, and can also have certain flame retardant effect.
Detailed description of the invention
Fig. 1 is the layer structural profile illustration of oil resistant conveyer in the embodiment of the present invention 1.
In figure, 1, belt carcass；2, band core rubber；3, rubber cover；31, upper rubber cover；32, lower rubber cover.
Specific embodiment
Invention is further described in detail below.
One, the nitrile rubber in embodiment following embodiment is selected from the card orchid sodium 3345F of the bright Sheng of Germany, and acrylonitrile content is
33%, Mooney viscosity is 100 DEG C of (45 ± 5) ML (1+4), density 0.98g/cm3；Neoprene, which is selected from mountain, which receives synthetic rubber, has
The SN32 of responsible company's production is limited, Mooney viscosity is 100 DEG C of (37-39) ML (1+4)；Chlorosulfonated polyethylene rubber is selected from Chinese stone
The CSM3304 of oily natural gas limited liability company production.
Embodiment 1: conveyer belt include belt carcass 1, band core rubber 2 and rubber cover 3, rubber cover 3 include upper rubber cover 31 and
Lower rubber cover 32；The layer structure of conveyer belt be successively from the bottom to top lower rubber cover 32, band core rubber 2, belt carcass 1, band core rubber 2 and on
Rubber cover 32.
Embodiment 2: a kind of oil resistant conveyer is prepared using following technique:
(1) preparation of rubber cover:
S1: modeling is practiced: taking nitrile rubber 50kg, neoprene 20kg, chlorosulfonated polyethylene rubber 10kg to put into open mill, modeling is practiced
Temperature is 45 DEG C, moulds and practices the time for 20min, obtains moulding experienced glue；
S2: one section mixing: by mould practice glue investment mixer in, 110 DEG C at a temperature of, mixing 1min；Then high abrasion is put into
Carbon black 10kg, semi-reinforcing hydrocarbon black 30kg, tricresyl phosphate 4.5kg, chlorinated paraffin 1.5kg, zinc oxide 3.6kg, stearic acid
2.4kg, N- isopropyl-N '-diphenyl-para-phenylene diamine 2kg, composite flame-retardant agent 6kg and vinyltriethoxysilane 1kg, mixing
Temperature is 135 DEG C, and after the 3min that turns refining, slice obtains one section of rubber compound；Wherein composite flame-retardant agent include 0.75kg zinc borate,
2.25kg pentaerythritol phosphate, 2.25kg brominated epoxy resin and 0.75kg white fused alumina micro mist mix；
S3: two-stage mixing: by one section of rubber compound, N- cyclohexyl -2-[4-morpholinodithio sulfenamide 0.75kg, ethylene thiourea
0.25kg, sulphur 1.5kg and magnesia 0.5kg are put into mixer again, and smelting temperature is 120 DEG C, and turn refining 3min, will
Roll spacing is adjusted to 6mm, and slice obtains two-stage mixing glue；
S4: it slice: after two-stage mixing glue room temperature is parked 6h, places it in and squeezes out slice on extruder, extrusion pressure is
0.6MPa, extrusion temperature are 90 DEG C, obtain rubber cover；
(2) with the preparation of core rubber:
S1: modeling practice: take butadiene rubber 40kg, butadiene-styrene rubber 30kg investment open mill in, mould practice temperature be 45 DEG C, mould practice the time be
20min obtains moulding experienced glue；
S2: one section mixing: by mould practice glue investment mixer in, 110 DEG C at a temperature of, mixing 1min；Then coumarone is put into
Resin 10kg, brominated epoxy resin 3kg, phenolic resin 2kg, resorcinol 2kg, white carbon black 15kg, N- isopropyl-N '-phenyl
P-phenylenediamine 1kg and chlorinated paraffin 2kg, smelting temperature are 130 DEG C, and after the 3min that turns refining, slice obtains one section of rubber compound；
S3: two-stage mixing: one section of rubber compound, 2-mercaptobenzothiazole 0.5kg and sulphur 1kg are put into mixer again,
Smelting temperature is 130 DEG C, and turn refining 3min, roll spacing is adjusted to 3mm, slice obtains two-stage mixing glue；
S4: it slice: after two-stage mixing glue room temperature is parked 6h, places it in and squeezes out slice on extruder, extrusion pressure is
0.6MPa, extrusion temperature are 85 DEG C, obtain band core rubber；
(3) by upper rubber cover with core rubber, lower rubber cover with core rubber on workbench assembly, then by upper rubber cover with
Band core rubber, nylon canvas belt carcass, lower rubber cover obtain made-up belt with core rubber three's cold moudling；Then made-up belt is placed in plate
Vulcanize on vulcanizer, curing temperature is 140 DEG C, sulfide stress 10MPa, obtains oil resistant conveyer after cooling.
Embodiment 3: a kind of oil resistant conveyer is prepared using following technique:
(1) preparation of rubber cover:
S1: modeling is practiced: taking nitrile rubber 55kg, neoprene 22.5kg, chlorosulfonated polyethylene rubber 15kg to put into open mill, modeling
Practicing temperature is 50 DEG C, moulds and practices the time for 22.5min, obtains moulding experienced glue；
S2: one section mixing: by mould practice glue investment mixer in, 115 DEG C at a temperature of, mixing 1.5min；Then investment is high resistance to
Grind carbon black 11.25kg, semi-reinforcing hydrocarbon black 33.75kg, tricresyl phosphate 6kg, chlorinated paraffin 2kg, zinc oxide 4.2kg, tristearin
Sour 2.8kg, 2-mercaptobenzimidazole 2.5kg, composite flame-retardant agent 8kg and vinyltriethoxysilane 1.5kg, smelting temperature
It is 140 DEG C, after the 4min that turns refining, slice obtains one section of rubber compound；Wherein composite flame-retardant agent includes 1kg zinc borate, 3kg Ji Wusi
Alcohol phosphate, 3kg brominated epoxy resin and 1kg white fused alumina micro mist mix；
S3: two-stage mixing: by one section of rubber compound, N- cyclohexyl -2-[4-morpholinodithio sulfenamide 1.125kg, ethylene thiourea
0.375kg, sulphur 2.25kg and magnesia 0.75kg are put into mixer again, and smelting temperature is 125 DEG C, and turn refining 4min,
Roll spacing is adjusted to 8mm, slice obtains two-stage mixing glue；
S4: it slice: after two-stage mixing glue room temperature is parked 7h, places it in and squeezes out slice on extruder, extrusion pressure is
0.7MPa, extrusion temperature are 95 DEG C, obtain rubber cover；
(2) with the preparation of core rubber:
S1: modeling practice: take butadiene rubber 45kg, butadiene-styrene rubber 35kg investment open mill in, mould practice temperature be 50 DEG C, mould practice the time be
22.5min obtains moulding experienced glue；
S2: one section mixing: by mould practice glue investment mixer in, 115 DEG C at a temperature of, mixing 1.5min；Then ancient horse is put into
Grand resin 12.5kg, brominated epoxy resin 4kg, phenolic resin 3kg, resorcinol 3kg, white carbon black 17.5kg N- isopropyl-
N '-diphenyl-para-phenylene diamine 1.5kg and chlorinated paraffin 3kg, smelting temperature are 135 DEG C, and after the 4min that turns refining, slice obtains one section
Rubber compound；
S3: one section of rubber compound, 2-mercaptobenzothiazole 0.75kg and sulphur 1.25kg two-stage mixing: are put into mixer again
In, smelting temperature is 135 DEG C, and turn refining 4min, roll spacing is adjusted to 4mm, slice obtains two-stage mixing glue；
S4: slice: after two-stage mixing glue room temperature is parked 7h, placing it in and squeeze out slice on extruder, extrusion pressure 0.6-
0.8MPa, extrusion temperature are 90 DEG C, obtain band core rubber；
(3) by upper rubber cover with core rubber, lower rubber cover with core rubber on workbench assembly, then by upper rubber cover with
Band core rubber, nylon canvas belt carcass, lower rubber cover obtain made-up belt with core rubber three's cold moudling；Then made-up belt is placed in plate
Vulcanize on vulcanizer, curing temperature is 145 DEG C, sulfide stress 12.5MPa, obtains oil resistant conveyer after cooling.
Embodiment 4: a kind of oil resistant conveyer is prepared using following technique:
(1) preparation of rubber cover:
S1: modeling is practiced: taking nitrile rubber 60kg, neoprene 25kg, chlorosulfonated polyethylene rubber 20kg to put into open mill, modeling is practiced
Temperature is 55 DEG C, moulds and practices the time for 25min, obtains moulding experienced glue；
S2: one section mixing: by mould practice glue investment mixer in, 120 DEG C at a temperature of, mixing 2min；Then high abrasion is put into
Carbon black 12.5kg, semi-reinforcing hydrocarbon black 37.5kg, tricresyl phosphate 7.5kg, chlorinated paraffin 2.5kg, zinc oxide 4.8kg, tristearin
Sour 3.2kg, N- isopropyl-N '-diphenyl-para-phenylene diamine 1.5kg, 2-mercaptobenzimidazole 1.5kg, composite flame-retardant agent 10kg and
Vinyltriethoxysilane 2kg, smelting temperature are 145 DEG C, and after the 5min that turns refining, slice obtains one section of rubber compound；It is wherein compound
Fire retardant includes 1.25kg zinc borate, 3.75kg pentaerythritol phosphate, 3.75kg brominated epoxy resin and 1.25kg white just
Beautiful micro mist mixes；
S3: two-stage mixing: by one section of rubber compound, N- cyclohexyl -2-[4-morpholinodithio sulfenamide 1.5kg, ethylene thiourea
0.5kg, sulphur 3kg and magnesia 1kg are put into mixer again, and smelting temperature is 130 DEG C, and turn refining 5min, by roll spacing tune
Whole is 10mm, and slice obtains two-stage mixing glue；
S4: it slice: after two-stage mixing glue room temperature is parked 8h, places it in and squeezes out slice on extruder, extrusion pressure is
0.8MPa, extrusion temperature are 100 DEG C, obtain rubber cover；
(2) with the preparation of core rubber:
S1: modeling practice: take butadiene rubber 50kg, butadiene-styrene rubber 40kg investment open mill in, mould practice temperature be 55 DEG C, mould practice the time be
25min obtains moulding experienced glue；
S2: one section mixing: by mould practice glue investment mixer in, 120 DEG C at a temperature of, mixing 2min；Then coumarone is put into
Resin 15kg, brominated epoxy resin 5kg, phenolic resin 4kg, resorcinol 4kg, white carbon black 20kg, N- isopropyl-N '-phenyl
P-phenylenediamine 2kg and chlorinated paraffin 4kg, smelting temperature are 140 DEG C, and after the 5min that turns refining, slice obtains one section of rubber compound；
S3: two-stage mixing: one section of rubber compound, 2-mercaptobenzothiazole 1kg and sulphur 1.5kg are put into mixer again,
Smelting temperature is 140 DEG C, and turn refining 5min, roll spacing is adjusted to 5mm, slice obtains two-stage mixing glue；
S4: it slice: after two-stage mixing glue room temperature is parked 8h, places it in and squeezes out slice on extruder, extrusion pressure is
0.8MPa, extrusion temperature are 95 DEG C, obtain band core rubber；
(3) by upper rubber cover with core rubber, lower rubber cover with core rubber on workbench assembly, then by upper rubber cover with
Band core rubber, nylon canvas belt carcass, lower rubber cover obtain made-up belt with core rubber three's cold moudling；Then made-up belt is placed in plate
Vulcanize on vulcanizer, curing temperature is 150 DEG C, sulfide stress 15MPa, obtains oil resistant conveyer after cooling.
The raw material dosage table of rubber cover in 1 embodiment 2-4 of table
Raw material dosage table with core rubber in 2 embodiment 2-4 of table
Two, comparative example
Comparative example 1: this comparative example and embodiment 2 the difference is that, be not added in the raw material of rubber cover composite flame-retardant agent with
And silane coupling agent.
Comparative example 2: this comparative example and embodiment 2 the difference is that, it is poly- that chlorosulfonation is not added in the raw material of rubber cover
Ethylene rubber.
Comparative example 3: this comparative example and embodiment 2 the difference is that, coumarone tree is not added in the raw material with core rubber
Rouge, brominated epoxy resin and phenolic resin.
Three, the conveyer belt that performance test prepares embodiment 2-4 and comparative example 1-3 as follows, to its performance
It is tested, test result is shown in table 3.
Tensile strength: according to the GB/T 528-2009 " survey of vulcanized rubber or thermoplastic elastomer tensile stress-strain performance
It is fixed ", the tensile strength of rubber cover is tested.
Elongation at break: according to the GB/T 528-2009 " survey of vulcanized rubber or thermoplastic elastomer tensile stress-strain performance
It is fixed ", the elongation at break of rubber cover is tested.
Adhesive strength: according to GB/T 6759-2013 " the plunger bond strength measuring method of conveyer belt ", to coating with
Adhesive strength with sandwich layer is tested.
Oil resistance: according to GB/T1690-2010 " vulcanized rubber or thermoplastic elastomer seakeeping test method ", to conveying
The oil resistance of band is tested；Experimental condition are as follows: immerse rubber cover in IRM903 test oil, the temperature in (70 ± 2) DEG C
Under, 72h is impregnated, its volume change is measured.
Flame retardant property: according to GB/T3685-2017 " the combustion characteristic research method of conveyer belt laboratory scale ", with conveying
The flame retardant property of band is tested.
Roll friction: according to GB/T7986-2013 " roller of conveyer belt friction test ", to the roll friction performance of conveyer belt
It is tested.
Oxygen index (OI): according to GB/T10707-2008 " test of rubber combustion performance ", the oxygen index (OI) of conveyer belt is surveyed
Examination.
Table 3
As can be seen from the above data, the volume change of conveyer belt of the invention in test oil is smaller, illustrate it with good
Good oil resistance；The evaluation flaming combustion time with coating is less than in the alcohol blast burner test of conveyer belt of the invention
1.3s illustrates that rubber cover has excellent flame retardant property；The average flaming combustion time for peelling off coating is less than 6s, illustrates this hair
Bright belt carcass glue-line also has certain flame retardant property；The oxygen index (OI) of conveyer belt is 41, belongs to high Fire retardant grade, illustrates the present invention
Conveyer belt have excellent flame retardant property；Furthermore conveyer belt of the invention also has preferable adhesive strength, illustrates the present invention
Conveyer belt the cohesive force with core rubber it is big, make between rubber cover and belt carcass have good adhesion strength.
It is addition composite flame-retardant agent in rubber cover in comparative example 1, compared to embodiment 2, adhesive strength is substantially reduced,
Illustrate that composite flame-retardant agent helps to improve the adhesion strength of rubber cover and belt carcass；The average burning time of rubber cover in comparative example 1
Greater than the average burning time of the rubber cover in embodiment 1, the oxygen index (OI) in comparative example 1 is less than the oxygen index (OI) in embodiment 1, says
Bright composite flame-retardant agent helps to improve the flame retardant property of rubber cover.
It is not added with chlorosulfonated polyethylene in rubber cover in comparative example 2, compared to embodiment 2, tensile strength and disconnected
It splits elongation to be declined, illustrates that the mechanical strength of rubber cover can be improved in chlorosulfonated polyethylene；The body of rubber cover in comparative example 2
Product change rate is greater than the volume change in embodiment 2, illustrates that chlorosulfonated polyethylene can improve the oil resistance of conveyer belt；It is right
The evaluation average burning time of coating is greater than the average burning time of coating in comparative example 2 in ratio 2, illustrates that chlorosulfonation is poly-
The flame retardant property of rubber cover can be improved in ethylene.
It is not added with coumarone indene resin, brominated epoxy resin and phenolic resin in band core rubber in comparative example 3, compared to reality
Example 2 is applied, the adhesive strength reduction of rubber cover and belt carcass illustrates with coumarone indene resin, brominated epoxy resin and the phenol in core rubber
Urea formaldehyde helps to improve the plunger bond strength of conveyer belt；The average burning time of belt carcass glue-line is elongated, illustrates in band core rubber
Coumarone indene resin, brominated epoxy resin and phenolic resin help to improve the flame retardant property of conveyer belt.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (10)
1. a kind of oil resistant conveyer, including belt carcass, band core rubber and rubber cover, rubber cover include upper rubber cover and lower rubber cover,
It is characterized by: the rubber cover is formed by the polymerizable raw material comprising following parts by weight:
It is 50-60 parts of nitrile rubber, 20-25 parts of neoprene, 10-20 parts of chlorosulfonated polyethylene rubber, 40-50 parts of carbon black, compound
6-10 parts of fire retardant, 2-4 parts of vulcanizing agent, 1-2 parts of promotor, 6-8 parts of activator, 6-10 parts of plasticizer, 2-3 parts of anti-aging agent and
1-2 parts of silane coupling agent；
The composite flame-retardant agent include weight ratio be the zinc borate of 1:3:3:1, pentaerythritol phosphate, brominated epoxy resin and
White fused alumina micro mist mixes；
The silane coupling agent is vinyltriethoxysilane.
2. a kind of oil resistant conveyer according to claim 1, it is characterised in that: the carbon black includes that weight ratio is 1:3's
High abrasion furnace black and semi-reinforcing furnace black.
3. a kind of oil resistant conveyer according to claim 1, it is characterised in that: the vulcanizing agent includes that weight ratio is 3:1
Sulphur and magnesia.
4. a kind of oil resistant conveyer according to claim 1, it is characterised in that: the plasticizer includes that weight ratio is 3:1
Phosphate plasticizer and the plasticizer of class containing chlorine.
5. a kind of oil resistant conveyer according to claim 4, it is characterised in that: the phosphate plasticizer is tricresyl phosphate
Toluene ester；The plasticizer of class containing chlorine is chlorinated paraffin.
6. a kind of oil resistant conveyer according to claim 1, it is characterised in that: the promotor includes that weight ratio is 3:1
Sulfenamide and Thiourea accelerator.
7. a kind of oil resistant conveyer according to claim 6, it is characterised in that: the sulfenamide is N- cyclohexyl-
2-[4-morpholinodithio sulfenamide；The Thiourea accelerator is ethylene thiourea.
8. a kind of oil resistant conveyer according to claim 1, it is characterised in that: the anti-aging agent is N- isopropyl-N '-benzene
One of base p-phenylenediamine, 2-mercaptobenzimidazole or theirs is compound.
9. a kind of oil resistant conveyer according to claim 1, it is characterised in that: the band core rubber is by including following parts by weight
Polymerizable raw material form: 40-50 parts of butadiene rubber, 30-40 parts of butadiene-styrene rubber, 10-15 parts of coumarone indene resin, brominated epoxy resin
3-5 parts, 2-4 parts of phenolic resin, 2-4 parts of resorcinol, 15-20 parts of white carbon black, 0.5-1 parts of 2-mercaptobenzothiazole, N- isopropyl
Base-N ' -1-2 parts of diphenyl-para-phenylene diamine, 2-4 parts of chlorinated paraffin and 1-1.5 parts of sulphur.
10. a kind of preparation process of oil resistant conveyer as described in any one of claims 1-9, it is characterised in that: including such as
Lower step:
(1) preparation of rubber cover:
S1: modeling is practiced: taking 10-20 parts of 50-60 parts of nitrile rubber, 20-25 parts of neoprene, chlorosulfonated polyethylene rubber investment mills
In machine, moulding white silk temperature is 45-55 DEG C, and moulding the white silk time is 20-25min, obtains moulding experienced glue；
S2: one section mixing: by mould practice glue investment mixer in, 110-120 DEG C at a temperature of, mixing 1-2min；Then it puts into
40-50 parts of carbon black, 6-10 parts of plasticizer, 6-8 parts of activator, 2-3 parts of anti-aging agent, 6-10 parts of composite flame-retardant agent and silane coupled
1-2 parts of agent, smelting temperature is 135-145 DEG C, and after the 3-5min that turns refining, slice obtains one section of rubber compound；
S3: two-stage mixing: 2-4 parts of one section of rubber compound, 1-2 parts of promotor and vulcanizing agent are put into mixer again, mixing
Temperature is 120-130 DEG C, and turn refining 3-5min, roll spacing is adjusted to 6-10mm, slice obtains two-stage mixing glue；
S4: it slice: after two-stage mixing glue room temperature is parked 6-8h, places it in and squeezes out slice on extruder, extrusion pressure is
0.6-0.8MPa, extrusion temperature are 90-100 DEG C, obtain rubber cover；
(2) with the preparation of core rubber:
S1: modeling is practiced: take 40-50 part of butadiene rubber, in 30-40 part investment open mills of butadiene-styrene rubber, modeling white silk temperature is 45-55 DEG C,
It moulds and practices the time for 20-25min, obtain moulding experienced glue；
S2: one section mixing: by mould practice glue investment mixer in, 110-120 DEG C at a temperature of, mixing 1-2min；Then it puts into
10-15 parts of coumarone indene resin, 3-5 parts of brominated epoxy resin, 2-4 parts of phenolic resin, 2-4 parts of resorcinol, white carbon black 15-20
Part, N- isopropyl-N ' -1-2 parts of diphenyl-para-phenylene diamine and 2-4 parts of chlorinated paraffin, smelting temperature are 130-140 DEG C, and turn refining 3-
After 5min, slice obtains one section of rubber compound；
S3: one section of rubber compound, 0.5-1 parts of 2-mercaptobenzothiazole and 1-1.5 parts of sulphur two-stage mixing: are put into mixing again
In machine, smelting temperature is 130-140 DEG C, and turn refining 3-5min, roll spacing is adjusted to 3-5mm, slice obtains two-stage mixing glue；
S4: it slice: after two-stage mixing glue room temperature is parked 6-8h, places it in and squeezes out slice on extruder, extrusion pressure is
0.6-0.8MPa, extrusion temperature are 85-95 DEG C, obtain band core rubber；
(3) by upper rubber cover with core rubber, lower rubber cover with core rubber on workbench assembly, then by upper rubber cover with
Band core rubber, belt carcass, lower rubber cover obtain made-up belt with core rubber three's cold moudling；Then made-up belt is placed on vulcanizing press
Vulcanization, curing temperature are 140-150 DEG C, sulfide stress 10-15MPa, obtain oil resistant conveyer after cooling.
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| CN110982137A (en) * | 2019-12-05 | 2020-04-10 | 江门市江海区新雄利塑料科技有限公司 | Rubber composition and preparation method of rubber material |
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| CN114772162A (en) * | 2022-04-27 | 2022-07-22 | 江苏奥斯达带业有限公司 | Oil-resistant light conveying belt and preparation method of oil-resistant layer |
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| CN114772162A (en) * | 2022-04-27 | 2022-07-22 | 江苏奥斯达带业有限公司 | Oil-resistant light conveying belt and preparation method of oil-resistant layer |
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