Background technology
(also claiming crossheading to carry) transported in the tunnel of stope under the coal mine, extensively adopts the mode of movement of rubber conveyer.Because fed distance bounces back gradually in the exploitation process, the conveying belt that is disposed needs repeatedly to cut out short and reconnect.Fabric core conveyor belt is easy to severing and very fast the connection most, thereby is widely used on the transfer roller of entry under the coal mine.
Before last century the seventies, it is coventional type canvas core conveyer belt that crossheading is carried used conveying belt.This kind conveying belt mechanical property is fine, and the stable life-span is long, but does not have flame retardant resistance.Production safety under the coal mine there is certain threat.Elastomeric material at that time and formula technique level can't be finished senior fire-retardantization to coventional type canvas core conveyer belt.Thus, after the last century the eighties, coventional type canvas core conveyer belt withdraws from the use market under the coal mine.The substitute is a kind of igelite that utilizes and stick with paste the fire-retardant integral weaving core conveyer belt of dipping, be called for short the PVC conveying belt, the nineties sticks the rubber mass rubber cover on the surface of PVC conveying belt later, is called for short the PVG conveying belt.Up at present, the unique selection that coal mine downhole crossheading is carried has only this PVC, PVG plastic core conveying belt.
Though PVC, PVG conveying belt have satisfied the requirement that coal mine downhole safety is produced aspect high flame retardant, made bigger sacrifice on mechanical property.Concrete defective is as follows:
1, because the softening temperature height of polyvinyl chloride, modulus is big, and made conveying belt hardness is bigger than normal, and in the time of below-10 ℃, the stiff groove forming character difference of belt body and be easy to fracture has a strong impact on normal use.
2, wearing no resistance of igelite only is equivalent to 1/5 of elastomeric material; When using elastomeric material to stick the surface, because two-phase modulus difference is excessive, the thickness of rubber rubber cover is confined in the 2mm, surpass this limit then rubber cover can in use come off.This defective has had a strong impact on the work-ing life of this kind conveying belt.
3, the belt carcass skeleton of this kind conveying belt is a kind of integral weaving structure.During braiding, the braiding path change of warp thread, the sinuousness difference is uneven in length, and stress-strain is not quite similar.This textural defect can cause the conveying belt operation stability poor, is easy to sideslip, and what influence was carried normally carries out.
4, the especially high-level belt body of this kind belt body can only carry out mechanical connection, and strength of joint only is equivalent to be easy to damage with strong by 40%, and maintenance is big.
In view of the above-mentioned defective of PVC, PVG conveying belt, from the nineties in last century, rubber industry is promptly listed the research and development of high flame retardant canvas laminated core conveyer belt within national 863 science and technology items in.
Summary of the invention
One of purpose of the present invention is to overcome the deficiencies in the prior art, a kind of original mechanical property of plain sail laminated core conveyer belt of both having inherited is provided, keeps the surface covering rubber of the fire retardant canvas laminated core conveyer belt of integral weaving core conveyer belt good flame-retardance energy again.
Another object of the present invention provides a kind of preparation method of above-mentioned surface covering rubber.
According to technical scheme provided by the invention, the surface covering rubber of described underground mine use fire retardant canvas laminated core conveyer belt comprises following component, component and proportioning are counted by weight: the paracril of acrylonitrile content in 50~100 parts, 1~5 part of sulphur, 1~4 part of anti-aging agent, 1~3 part of hard ester acid, 5~12 parts of petroleum line softeners or resol are tenderizer, and 4~12 parts meta-cresol urea formaldehyde is a dihydroxy-benzene donor between the tackifier, 20~60 parts of reinforcement carbon blacks, 10~50 parts of high abrasion carbon blacks, 0~20 part of white carbon black, 0~25 part of potter's clay, 50~120 parts of igelites are stuck with paste, 1~5 part of zinc oxide, 0~5 part of magnesium oxide, 15~60 parts of aluminium hydroxides, 0~50 part of No. 70 clorafin, 0~35 part of ammonium polyphosphate, 0~20 part of organic bromine flame retardant, 0~15 part of zinc borate, 0~20 part of antimonous oxide, 1~4 part of promotor, 2~8 parts meta-cresol urea formaldehyde are the formaldehyde donor of tackifier;
The each component that comprises following weight part during described igelite is stuck with paste: 100 parts of pvc resin paste grades, 5~50 parts of liquid acrylonitrile butadiene rubber, 10~100 parts of ester plasticizers, 10~100 parts of liquid chlorinated paraffin, 10~100 parts of epoxy chloroparaffins, 0~20 part of antimonous oxide, 0~10 part of lead sulfate tribasic, 0~10 part of hard acid ester salt, 3~10 parts of static inhibitor, 0~4 part of Sodium dodecylbenzene sulfonate, 0~10 part of glycerol, 0~3 part of trolamine.
Described anti-aging agent is anti-aging agent RD, antioxidant 4010NA or antioxidant BLE;
Described promotor is sulfenamide type accelerators CZ, NOBS, thiazole accelerator DM, thiuram type accelerator TMTD, DTDM;
Described petroleum line softener is that oil is coumarone, carbon 5 resins, carbon 9 resins, and resol is that tenderizer is octyl group phenolic aldehyde BN-1 or octyl group phenolic aldehyde BN-2;
Described meta-cresol urea formaldehyde is that tackifier are Resorcinol donor RF-90, adhesive A, adhesive RS and formaldehyde donor HMMM;
Described organic bromine flame retardant is tetrabromoethane, hexabromo cyclododecane, decabromodiphynly oxide and TBC;
Described ester plasticizer is DOP, DOA and DOS;
Described static inhibitor is static inhibitor SN or static inhibitor NP-6.
The surface covering rubber preparation method of above-mentioned underground mine use fire retardant canvas laminated core conveyer belt adopts following processing step: component and proportioning are counted by weight:
Make igelite and stick with paste operation: with the ester plasticizer of 10~100 weight parts, the liquid chlorinated paraffin of 10~100 weight parts, the epoxy chloroparaffin of 10~100 weight parts, the static inhibitor of 3~10 weight parts, the Sodium dodecylbenzene sulfonate of 0~4 weight part, the glycerol of 0~10 weight part, the trolamine of 0~3 weight part adds in the dissolution kettle, temperature is 30~60 ℃ in the maintenance dissolution kettle, stir, the liquid acrylonitrile butadiene rubber that in dissolution kettle, adds 5~50 weight parts again, stir, the antimonous oxide that then in dissolution kettle, adds 0~20 weight part, three salt formula lead sulfates of 0~10 weight part, the hard acid ester salt of 0~10 weight part also stirs, and adds the pvc resin paste grade of 100 weight parts in the last dissolution kettle and stirs;
The operation of plasticating: with the paracril of the middle acrylonitrile content of 50~100 weight parts, plasticate in mill, the roller temperature of control mill is 30~50 ℃;
Mixing operation: during mixer mixing, add the paracril of 50~100 weight parts of plasticating and the reinforcement carbon black of 20~60 weight parts earlier, the high abrasion carbon black of 10~50 weight parts, the white carbon black of 0~20 weight part, the potter's clay of 0~25 weight part was refined 1 minute; Add then prepared igelite stick with paste 50~120 weight parts, the sulphur of 1~5 weight part, the zinc oxide of 1~5 weight part, the magnesium oxide of 0~5 weight part, the anti-aging agent of 1~4 weight part, the hard ester acid of 1~3 weight part, the petroleum line softener of 5~12 weight parts or resol are tenderizer, the meta-cresol urea formaldehyde of 4~14 weight parts is tackifier, the aluminium hydroxide of 15~60 weight parts, No. 70 clorafins of 0~50 weight part, the ammonium polyphosphate of 0~35 weight part, the organic bromine flame retardant of 0~20 weight part, the zinc borate of 0~15 weight part, the antimonous oxide of 0~20 weight part, the refining time was controlled at 3~5 minutes, the machine temperature control is at 70~130 ℃, behind the Banbury mixer discharge, turn refining with mill again, add 1~4 part of promotor when turning refining; Last slice is also sent into the normal temperature pond and is carried out water-cooled, and the edge number after the water-cooled stacks in order to rolling out film and uses;
The heat refining operation: mill roller temperature is preheated to 40~60 ℃, and the mixed sheet that water-cooled is stacked is sent into mill and is carried out heat refining then, when sizing material is warming up to 40~60, gum stock is sent into to be preheated on 50~80 ℃ of three roller or the four-roll calender carry out slice;
Sheeting process: carry out on three rollers or four-roll calender, shield is spooled in order to the conveying belt moulding and is used on the calendering film liner well.
Rubber cover of the present invention is after using on the underground mine use fire retardant canvas laminated core conveyer belt, make the underground mine use fire retardant canvas laminated core conveyer belt both inherit the original mechanical property of canvas laminated core conveyer belt, had integral weaving core conveyer belt good flame retardancy again.And the preparation method of the fire-retardant rubber cover of underground mine use fire retardant canvas laminated core conveyer belt is simple, easy to operate.
Embodiment
The invention will be further described below in conjunction with specific embodiment.
Embodiment 1:
Surface covering rubber of a kind of underground mine use fire retardant canvas laminated core conveyer belt of the present invention and preparation method thereof adopts following processing step:
Get the raw material of the each component of following weight earlier: the pvc resin paste grade of 100kg as preparation igelite paste, the liquid acrylonitrile butadiene rubber of 5kg, the ester plasticizer DOP of 80kg, the liquid chlorinated paraffin of 10kg, the epoxy chloroparaffin of 40kg, the lead sulfate tribasic of 5kg, the static inhibitor SN of 5kg, the glycerol of 3kg.
The each component conduct of getting following weight again prepares the raw material of underground mine use fire retardant canvas laminated core conveyer belt rubber cover except that igelite is stuck with paste: the paracril of the middle acrylonitrile content of 100kg, the sulphur of 2kg, the zinc oxide of 5kg, the magnesium oxide of 5kg, the anti-aging agent RD of 1kg, the sulfenamide type accelerators CZ of 4kg, the hard ester acid of 1kg, the oil of 12kg is a coumarone, the Resorcinol donor RF-90 of 4kg, the reinforcement carbon black of 30kg, the high abrasion carbon black of 20kg, the white carbon black of 10kg, the aluminium hydroxide of 50kg, the ammonium polyphosphate of 15kg, the zinc borate of 15kg.
Make igelite and stick with paste operation: in the glycerol adding dissolution kettle with the static inhibitor SN of the epoxy chloroparaffin of the liquid chlorinated paraffin of ester plasticizer DOP, the 10kg of 80kg, 40kg, 5kg and 3kg, temperature is 30 ℃ in the maintenance dissolution kettle, stir, the liquid acrylonitrile butadiene rubber that in dissolution kettle, adds 5kg again, stir, the lead sulfate tribasic that then adds 5kg in dissolution kettle adds the pvc resin paste grade of 100kg in the last dissolution kettle and stirs;
The operation of plasticating: the 100kg paracril is plasticated in mill, and the roller temperature of control mill is 30~50 ℃;
Mixing operation: during mixer mixing, the white carbon black of 100kg paracril that adding is earlier plasticated and 30kg reinforcement carbon black, 20kg high abrasion carbon black, 10kg, the anti-aging agent RD of 1kg, the hard ester acid of 1kg, the oil of 12kg is a coumarone, refines 1 minute; Add the 100kg igelite paste that has prepared, the sulphur of 2kg then, the zinc oxide of 5kg, the magnesium oxide of 5kg, the Resorcinol donor RF-90 of 4kg, the aluminium hydroxide of 50kg, the ammonium polyphosphate of 15kg, the zinc borate of 15kg; The refining time was controlled at 3 minutes, and the machine temperature control, turns refining with mill behind the Banbury mixer discharge at 70 ℃ again, added the sulfenamide type accelerators CZ of 4kg when turning refining, and 4Kg formaldehyde is given and body HMMM; Last slice is also sent into the normal temperature pond and is carried out water-cooled; Edge number after the water-cooled stacks in order to rolling out film usefulness, and this is a mixed sheet;
Heat refining operation: mill roller temperature is preheated to 40 ℃, then mixed sheet is sent into mill and carried out heat refining, when sizing material is warming up to 40 ℃, gum stock is sent into to be preheated on 50 ℃ of three roller or the four-roll calender carry out slice;
Sheeting process: in the rubber cover film production that three rollers or the enterprising professional etiquette of four-roll calender are decided thickness, shield is spooled in order to the conveying belt moulding and is used on the good rubber cover film liner of calendering.
Embodiment 2:
Surface covering rubber of a kind of underground mine use fire retardant canvas laminated core conveyer belt of the present invention and preparation method thereof adopts following processing step:
Get the raw material of the each component of following weight earlier: the Sodium dodecylbenzene sulfonate of static inhibitor NP-6, the 2kg of the liquid chlorinated paraffin of ester plasticizer DOA, the 30kg of 50kg, the epoxy chloroparaffin of 40kg, 3kg, the glycerol of 3kg, the trolamine of 1Kg, the liquid acrylonitrile butadiene rubber of 10kg as preparation igelite paste, add in the dissolution kettle, temperature is 30 ℃ in the maintenance dissolution kettle, stirs; The antimonous oxide that in dissolution kettle, adds 8kg again, the hard acid ester salt of 3kg, the pvc resin paste grade of 100kg, stirring gets final product.
The each component conduct of getting following weight again prepares the raw material of underground mine use fire retardant canvas laminated core conveyer belt rubber cover except that igelite is stuck with paste: the paracril of the middle acrylonitrile content of 80kg, the reinforcement carbon black of 40kg, the high abrasion carbon black of 20kg, the antioxidant 4010NA of 1kg, 1Kg anti-aging agent RD, the hard ester acid of 2kg, carbon 5 resins of 12kg, 80 parts of igelites are stuck with paste 1.5kg sulphur, 3kg zinc oxide, 3kg magnesium oxide,, the aluminium hydroxide of 60kg, the ammonium polyphosphate of 15kg, 15Kg hexabromo cyclododecane, the 10Kg70 clorafin, the sulfenamide type accelerators CZ of 2kg, the thiazole accelerator DM of 1Kg.
Make igelite and stick with paste operation: with the Sodium dodecylbenzene sulfonate of static inhibitor NP-6, the 2kg of the epoxy chloroparaffin of the liquid chlorinated paraffin of ester plasticizer DOA, the 30kg of 50kg, 40kg, 3kg, the glycerol of 3kg, the trolamine of 1Kg, the liquid acrylonitrile butadiene rubber of 10kg, add in the dissolution kettle, temperature is 30 ℃ in the maintenance dissolution kettle, stirs; The antimonous oxide that in dissolution kettle, adds 8kg again, the hard acid ester salt of 3kg, the pvc resin paste grade of 100kg, stirring gets final product.
The operation of plasticating: the paracril of the middle acrylonitrile content of 80kg is plasticated in mill, and the roller temperature of control mill is 50 ℃;
Mixing operation: during mixer mixing, the high abrasion carbon black of the paracril of the middle acrylonitrile content of the 80kg that adding is earlier plasticated and the reinforcement carbon black of 40kg, 20kg, the antioxidant 4010NA of 1kg, 1Kg anti-aging agent RD, the hard ester acid of 2kg, carbon 5 resins of 12kg were refined 1 minute; And then add the aluminium hydroxide of 80 parts of igelite pastes, 1.5kg sulphur, 3kg zinc oxide, 3kg magnesium oxide, 60kg, the ammonium polyphosphate of 15kg, 15Kg hexabromo cyclododecane, 10Kg70 clorafin, the refining time was controlled at 3 minutes, the machine temperature control is at 70 ℃, behind the Banbury mixer discharge, turn refining with mill again, add the sulfenamide type accelerators CZ of 2kg when turning refining, the thiazole accelerator DM of 1Kg; Last slice is also sent into the normal temperature pond and is carried out water-cooled; Edge number after the water-cooled stacks in order to rolling out film usefulness, and this is a mixed sheet;
Heat refining operation: mill roller temperature is preheated to 40 ℃, then mixed sheet is sent into mill and carried out heat refining, when sizing material is warming up to 40 ℃, gum stock is sent into to be preheated on 50 ℃ of three roller or the four-roll calender carry out slice;
Calendering procedure: in the rubber cover film production that three rollers or the enterprising professional etiquette of four-roll calender are decided thickness, shield is spooled in order to the conveying belt moulding and is used on the good rubber cover film liner of calendering.
Embodiment 3:
Surface covering rubber of a kind of canvas laminated core conveyer belt of the present invention and preparation method thereof adopts following processing step:
Get the raw material of the each component of following weight earlier: the ester plasticizer DOS of 30kg as preparation igelite paste, the liquid chlorinated paraffin of 30kg, the epoxy chloroparaffin of 60kg, the static inhibitor SN of 5kg, the liquid acrylonitrile butadiene rubber of 5kg, the antimonous oxide of 10kg, the lead sulfate tribasic of 5kg, the hard acid ester salt of 5kg, the pvc resin paste grade of 100kg.
The each component conduct of getting following weight again prepares the raw material of the fire retardant canvas band core adhesive of canvas laminated core conveyer belt except that igelite is stuck with paste: the paracril of the middle acrylonitrile content of 80kg, the antioxidant BLE of 3kg, the hard ester acid of 2kg, the octyl group phenolic aldehyde BN-1 of 8kg, the reinforcement carbon black of 40kg, the high abrasion carbon black of 30kg, the potter's clay of 15kg, the igelite of 80kg is stuck with paste, the sulphur of 3kg, the zinc oxide of 3kg, the magnesium oxide of 3kg, the aluminium hydroxide of 40kg, No. 70 clorafins of 25kg, the ammonium polyphosphate of 15kg, the decabromodiphynly oxide of 10kg, the zinc borate of 8kg, the antimonous oxide of 10kg, the thiuram type accelerator TMTD of 3kg, 2Kg sulfenamide type accelerators CZ.
Make igelite and stick with paste operation: with the ester plasticizer DOS of 30kg, the liquid chlorinated paraffin of 30kg, the epoxy chloroparaffin of 60kg, the static inhibitor SN of 5kg, the liquid acrylonitrile butadiene rubber of 5kg adds in the dissolution kettle, temperature is 45 ℃ in the maintenance dissolution kettle, stir, in dissolution kettle, add the antimonous oxide of 10kg again, the lead sulfate tribasic of 5kg, the hard acid ester salt of 5kg also stirs, and adds the pvc resin paste grade of 100 weight parts in the last dissolution kettle and stir to get final product;
The operation of plasticating: the paracril of the middle acrylonitrile content of 80kg is plasticated in mill, and the roller temperature of control mill is 40 ℃;
Mixing operation: during mixer mixing, the reinforcement carbon black of the hard ester acid of the paracril of the middle acrylonitrile content of the 80kg that adding is earlier plasticated and the antioxidant BLE of 3kg, 2kg, octyl group phenolic aldehyde BN-1, the 40kg of 8kg, the high abrasion carbon black of 30kg, the potter's clay of 15kg were refined 1 minute; And then add the igelite paste of 80kg, the sulphur of 3kg, the zinc oxide of 3kg, the magnesium oxide of 3kg, the aluminium hydroxide of 40kg, No. 70 clorafins of 25kg, the ammonium polyphosphate of 15kg, the decabromodiphynly oxide of 10kg, the zinc borate of 8kg, the antimonous oxide of 10kg, the refining time was controlled at 3 minutes, the machine temperature control is at 70 ℃, behind the Banbury mixer discharge, turn refining with mill again, the thiuram type accelerator TMTD that adds 3kg when turning refining, 2Kg sulfenamide type accelerators CZ; Last slice is also sent into the normal temperature pond and is carried out water-cooled; Edge number after the water-cooled stacks in order to rolling out film usefulness, and this is a mixed sheet;
The heat refining operation: mill roller temperature is preheated to 50 ℃, and the mixed sheet that water-cooled is stacked is sent into mill and is carried out heat refining then, when sizing material is warming up to 50 ℃, the heat refining film is sent into to be preheated on 70 ℃ of three roller or the four-roll calender carry out slice;
Sheeting process: carry out on three rollers or four-roll calender, shield is spooled in order to the conveying belt moulding and is used on the calendering film liner well.
The equipment that relates among the preparation method of the fire retardant canvas band core adhesive of above-mentioned canvas laminated core conveyer belt is conventional production unit.