CN101580681B - Surface covering rubber of flame-retardant canvas laminated core conveying belt and preparation method thereof - Google Patents
Surface covering rubber of flame-retardant canvas laminated core conveying belt and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a surface covering rubber of a flame retardant canvas laminated core conveyer belt and a preparation method thereof, wherein polyvinyl chloride plastic paste is firstly prepared, and nitrile rubber is plasticated on an open mill and enters a mixing procedure: sequentially adding nitrile rubber and reinforcing carbon black, high wear-resistant carbon black, white carbon black and pottery clay for refining; then adding polyvinyl chloride plastic paste, sulfur, zinc oxide, magnesium oxide, an anti-aging agent, stearic acid, a petroleum softener, a metacresol resin tackifier, aluminum hydroxide, chlorinated paraffin, ammonium polyphosphate, an organic bromine flame retardant, zinc borate and antimony trioxide for refining, after discharging by an internal mixer, turning by an open mill, and adding an accelerator during turning; finally, discharging the slices and conveying the slices into a water tank for water cooling, hot refining and tabletting: and (4) rolling the lining cloth of the rolled rubber sheet for forming the conveying belt. The invention not only inherits the original mechanical property of the canvas laminated core conveyer belt, but also keeps the good flame retardant property of the whole woven core conveyer belt.
Description
Technical field
The present invention relates to surface covering rubber of a kind of underground mine use fire retardant canvas laminated core conveyer belt and preparation method thereof.Being used to make the underground mine use fire retarding conveying band that meets the MT830-1999 standard produces.
Background technology
(also claiming the crossheading conveying) 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 connects again.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 accomplished 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 vita 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, on mechanical property, made bigger sacrifice.Concrete defective is following:
1, because the softening temperature of SE is high, and modulus is big, and made conveying belt hardness is bigger than normal, 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 vita only is equivalent to 1/5 of elastomeric material; When using elastomeric material to stick the surface, because two phase modulus differences are 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, sinuousness is different, 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 the object of the invention is to overcome the deficiency that exists in the prior art; A kind of plain sail laminated core conveyer belt original mechanical performance 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 ability 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 said underground mine use fire retardant canvas laminated core conveyer belt comprises following component, and 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, 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 vitas are stuck with paste 1～5 part of zinc oxide; 0～5 part of Natural manganese dioxide, 15～60 parts of white lakes, 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 Antimony Trioxide: 99.5Min, 1～4 part of promotor, 2～8 parts meta-cresol urea formaldehyde is the formaldehyde donor of tackifier;
The each component that comprises following weight part during said vita is stuck with paste: 100 parts of pvc resin paste grades, 5～50 parts of LNBRs, 10～100 parts of ester plasticizers; 10～100 parts of liquid chlorinated paraffin, 10～100 parts of epoxy chloroparaffins, 0～20 part of Antimony Trioxide: 99.5Min; 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 X 2073,0～10 part of USP Kosher, 0～3 part of trolamine.
Said anti-aging agent is anti-aging agent RD, antioxidant 4010NA or antioxidant BLE;
Said promotor is sulfenamide type accelerators CZ, NOBS, thiazole accelerator DM, thiuram type accelerator TMTD, DTDM;
Said 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;
Said meta-cresol urea formaldehyde is that tackifier are Resorcinol donor RF-90, adhesive A, adhesive RS and formaldehyde donor HMMM;
Said organic bromine flame retardant is tetrabromoethane, hexabromo cyclododecane, decabromodiphynly oxide and TBC;
Said ester plasticizer is DOP, DOA and DOS;
Said 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 process step: component and proportioning are counted by weight:
Make vita and stick with paste operation: 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 X 2073 of 0～4 weight part, the USP Kosher of 0～10 weight part, the trolamine of 0～3 weight part are added in the dissolution kettle; Temperature is 30～60 ℃ in the maintenance dissolution kettle; Stir; The LNBR that in dissolution kettle, adds 5～50 weight parts again; Stir, then in dissolution kettle, add the Antimony Trioxide: 99.5Min of 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, in mill, plasticate, 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 vita stick with paste the sulphur of 50～120 weight parts, 1～5 weight part, the zinc oxide of 1～5 weight part, the Natural manganese dioxide 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 white lake 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 Antimony Trioxide: 99.5Min of 0～20 weight part, the refining time was controlled at 3～5 minutes, and 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 then water-cooled is stacked is sent into mill and is carried out heat refining, 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: on three rollers or four-roll calender, carry out, 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 canvas laminated core conveyer belt original mechanical performance, 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
Below in conjunction with specific embodiment the present invention is described further.
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 process step:
Get the raw material of the each component of following weight earlier: the pvc resin paste grade of 100kg as preparation vita paste; The LNBR 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 USP Kosher 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 vita is stuck with paste: the paracril of the middle acrylonitrile content of 100kg, the sulphur of 2kg, the zinc oxide of 5kg; The Natural manganese dioxide 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 white lake of 50kg, the ammonium polyphosphate of 15kg, the zinc borate of 15kg.
Make vita and stick with paste operation: the ester plasticizer DOP of 80kg, the liquid chlorinated paraffin of 10kg, the epoxy chloroparaffin of 40kg, the static inhibitor SN of 5kg and the USP Kosher of 3kg are added in the dissolution kettle; Temperature is 30 ℃ in the maintenance dissolution kettle; Stir, in dissolution kettle, add the LNBR of 5kg again, stir; The lead sulfate tribasic that then in dissolution kettle, adds 5kg 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 vita paste that has prepared, the sulphur of 2kg then, the zinc oxide of 5kg, the Natural manganese dioxide of 5kg, the Resorcinol donor RF-90 of 4kg, the white lake 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 carry 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 process step:
Get the raw material of the each component of following weight earlier: the X 2073 of the epoxy chloroparaffin of the ester plasticizer DOA of 50kg, the liquid chlorinated paraffin of 30kg, 40kg, the static inhibitor NP-6 of 3kg, 2kg, the USP Kosher of 3kg, the trolamine of 1Kg, the LNBR of 10kg as preparation vita paste; Add in the dissolution kettle; Temperature is 30 ℃ in the maintenance dissolution kettle, stirs; The Antimony Trioxide: 99.5Min 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 vita 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; The 1Kg anti-aging agent RD, the hard ester acid of 2kg, carbon 5 resins of 12kg, 80 parts of vitas are stuck with paste; 1.5kg sulphur, 3kg zinc oxide, 3kg Natural manganese dioxide; The white lake 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 vita and stick with paste operation: with the ester plasticizer DOA of 50kg, the liquid chlorinated paraffin of 30kg, the epoxy chloroparaffin of 40kg, the static inhibitor NP-6 of 3kg, the X 2073 of 2kg, the USP Kosher of 3kg, the trolamine of 1Kg, the LNBR of 10kg; Add in the dissolution kettle; Temperature is 30 ℃ in the maintenance dissolution kettle, stirs; The Antimony Trioxide: 99.5Min 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 hard ester acid of 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, 2kg, carbon 5 resins of 12kg were refined 1 minute; And then add the white lake of 80 parts of vita pastes, 1.5kg sulphur, 3kg zinc oxide, 3kg Natural manganese dioxide, 60kg; The ammonium polyphosphate of 15kg, 15Kg hexabromo cyclododecane, 10Kg70 clorafin, the refining time was controlled at 3 minutes, and 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 carry 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 process step:
Get the raw material of the each component of following weight earlier: the ester plasticizer DOS of 30kg, the liquid chlorinated paraffin of 30kg, the epoxy chloroparaffin of 60kg as preparation vita paste; The static inhibitor SN of 5kg; The LNBR of 5kg, the Antimony Trioxide: 99.5Min 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 vita 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 vita of 80kg is stuck with paste, the sulphur of 3kg, the zinc oxide of 3kg; The Natural manganese dioxide of 3kg, the white lake of 40kg, No. 70 clorafins of 25kg; The ammonium polyphosphate of 15kg, the decabromodiphynly oxide of 10kg, the zinc borate of 8kg; The Antimony Trioxide: 99.5Min of 10kg, the thiuram type accelerator TMTD of 3kg, 2Kg sulfenamide type accelerators CZ.
Make vita 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 LNBR of 5kg add in the dissolution kettle, and temperature is 45 ℃ in the maintenance dissolution kettle; Stir, in dissolution kettle, add the Antimony Trioxide: 99.5Min 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 paracril of the middle acrylonitrile content of the 80kg that adding is earlier plasticated and 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 were refined 1 minute; And then add the vita paste of 80kg, the sulphur of 3kg, the zinc oxide of 3kg, the Natural manganese dioxide of 3kg, the white lake of 40kg, No. 70 clorafins of 25kg, the ammonium polyphosphate of 15kg, the decabromodiphynly oxide of 10kg, the zinc borate of 8kg, the Antimony Trioxide: 99.5Min of 10kg; The refining time was controlled at 3 minutes; The machine temperature control, turns refining with mill behind the Banbury mixer discharge at 70 ℃ 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 then water-cooled is stacked is sent into mill and is carried out heat refining, 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: on three rollers or four-roll calender, carry out, 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.
Claims (7)
1. the surface covering rubber of a canvas laminated core conveyer belt, it is characterized in that: it comprises following component: the paracril of acrylonitrile content in 50～100 parts, 50～120 parts of vitas are stuck with paste 1～5 part of sulphur; 1～5 part of zinc oxide, 1～5 part of Natural manganese dioxide, 1～4 part of anti-aging agent, 1～4 part of promotor; 1～3 part of Triple Pressed Stearic Acid, 5～12 parts of petroleum line softeners, 4～14 parts of meta-cresol urea formaldehydes are 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; 15～60 parts of white lakes, 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 Antimony Trioxide: 99.5Min;
Said vita is stuck with paste and is comprised following component: 100 parts of pvc resin paste grades, 5～50 parts of LNBRs, 10～100 parts of ester plasticizers; 10～100 parts of liquid chlorinated paraffin, 10～100 parts of epoxy chloroparaffins, 0～20 part of Antimony Trioxide: 99.5Min; 0～10 part of lead sulfate tribasic, 0～10 part of stearate, 3～10 parts of static inhibitor; 0～4 part of X 2073,0～10 part of USP Kosher and 0～3 part of trolamine.
2. the surface covering rubber of a kind of canvas laminated core conveyer belt as claimed in claim 1, it is characterized in that: said anti-aging agent is anti-aging agent RD, antioxidant 4010NA or antioxidant BLE.
3. the surface covering rubber of a kind of canvas laminated core conveyer belt as claimed in claim 1, it is characterized in that: said promotor is sulfenamide type accelerators CZ, sulfenamide type accelerators NOBS, thiazole accelerator DM, thiuram type accelerator TMTD or thiuram type accelerator PMTM.
4. the surface covering rubber of a kind of canvas laminated core conveyer belt as claimed in claim 1, it is characterized in that: said organic bromine flame retardant is tetrabromoethane, hexabromo cyclododecane, decabromodiphynly oxide or TBC.
5. the surface covering rubber of a kind of canvas laminated core conveyer belt as claimed in claim 1, it is characterized in that: said ester plasticizer is DOP, DOA or DOS.
6. the surface covering rubber of a kind of canvas laminated core conveyer belt as claimed in claim 1, it is characterized in that: said static inhibitor is static inhibitor SN or static inhibitor NP-6.
7. the preparation method of the surface covering rubber of the described a kind of canvas laminated core conveyer belt of claim 1 comprises following process step:
Make vita and stick with paste operation: 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 X 2073 of 0～4 weight part, the USP Kosher of 0～10 weight part, the trolamine of 0～3 weight part are added in the dissolution kettle; Temperature is 30～60 ℃ in the maintenance dissolution kettle; Stir; The LNBR that in dissolution kettle, adds 5～50 weight parts again; Stir, then in dissolution kettle, add the Antimony Trioxide: 99.5Min of 0～20 weight part, three salt formula lead sulfates of 0～10 weight part; The stearate 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: the paracril of the middle acrylonitrile content of 50～100 weight parts is plasticated in mill, and the roller temperature of control mill is 30～50 ℃;
Mixing operation: during mixer mixing; The paracril of the middle acrylonitrile content of 50～100 weight parts that adding is earlier plasticated and the reinforcement carbon black of 20～60 weight parts, 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 vita stick with paste the sulphur of 50～120 weight parts, 1～5 weight part, the zinc oxide of 1～5 weight part, the Natural manganese dioxide of 1～5 weight part; The anti-aging agent of 1～4 weight part, the Triple Pressed Stearic Acid of 1～3 weight part, the petroleum line softener of 5～12 weight parts; The meta-cresol urea formaldehyde of 4～14 weight parts is tackifier, the white lake 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 Antimony Trioxide: 99.5Min of 0～20 weight part, the refining time was controlled at 3～5 minutes, and 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 then water-cooled is stacked is sent into mill and is carried out heat refining, when sizing material is warming up to 40～60 ℃, the heat refining film is sent into to be preheated on 50～80 ℃ of three roller or the four-roll calender carry out slice;
Sheeting process: on three rollers or four-roll calender, carry out, shield is spooled in order to the conveying belt moulding and is used on the calendering film liner well.
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| CN2009100302689A CN101580681B (en) | 2009-03-24 | 2009-03-24 | Surface covering rubber of flame-retardant canvas laminated core conveying belt and preparation method thereof |
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| CN2009100302689A CN101580681B (en) | 2009-03-24 | 2009-03-24 | Surface covering rubber of flame-retardant canvas laminated core conveying belt and preparation method thereof |
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| CN101580681B true CN101580681B (en) | 2012-07-04 |
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