A kind of unitary-core flame-resistant conveying belt and production method thereof with cambic horizon
Technical field
The present invention relates to a kind of colliery fire retarding conveying band, relate in particular to a kind of fabric unitary-core flame-resistant conveying belt and production method thereof.
Background technology
Unitary-core flame-resistant conveying belt is the main tool of transportation coal under the present coal mine, stipulate according to MT914-2008 " colliery fabric unitary-core flame-resistant conveying belt ", unitary-core flame-resistant conveying belt divides two types: a kind of is the plastics unitary-core flame-resistant conveying belts, be called for short the PVC type, it is to soak the plasticizing rear surface by the fabric whole belt core to apply one deck Vinyl chloride resin again and form, its advantage is that technology is simple, cost is low, production efficiency is high, flame retardance is good, shortcoming be easily skid, groove forming character is poor, carry that the inclination angle is little, conveying efficiency is low; Another kind is the rubber face unitary-core flame-resistant conveying belt, be called for short the PVG type, it is to soak the plasticizing rear surface by the fabric whole belt core to cover one deck flame retardant rubber again and form, its advantage is good springiness, easily grooving, carry that the inclination angle is big, conveying efficiency is high, and shortcoming is that the bond properties of rubber and belt carcass is poor, easily delamination, foaming, service life are lacked.In addition, the cover thickness of unitary-core flame-resistant conveying belt is thinner in the prior art, general PVG type rubber cover 1.5mm, and PVC rubber cover 1mm, in case overplate grinds off, belt carcass has just lost value of service, causes the waste of the resource and the energy.
Summary of the invention
In order to overcome the deficiency of existing PVC, PVG unitary-core flame-resistant conveying belt, the invention provides a kind of unitary-core flame-resistant conveying belt with cambic horizon, it has not only satisfied the requirement of MT914-2008 " colliery fabric unitary-core flame-resistant conveying belt " fully, and improved the bond strength of rubber face unitary-core flame-resistant conveying belt significantly, improve the thickness of rubber cover simultaneously, thereby prolong the service life of load-transfer device.
The present invention solves the problems of the technologies described above the technical scheme of being taked to be:
A kind of unitary-core flame-resistant conveying belt with cambic horizon is provided, comprises framework material, overplate, it is characterized in that between framework material, overplate, cambic horizon being set; Described framework material is to soak closely knit integral body after the plasticizing by the fabric whole belt core, and cambic horizon is fire-retardant thermoplastic elastomer, and overplate is the polysulphide rubbers combination material of flame-retardant and anti-static.
In order to obtain the unitary-core flame-resistant conveying belt of above-mentioned band cambic horizon, the present invention has adopted following production method:
At first, the fabric whole belt core soaked to mould plastify into closely knit integral body, obtain framework material;
Secondly, framework material is pasted together by two extruders and cambic horizon under 170-180 ℃ hot state;
Once more, cambic horizon after the stickup and framework material stick on overplate on the surface of cambic horizon by two extruders under 160-170 ℃ hot state again.
Described thermoplastic elastomer is a kind of blend that comprises powdery government rubber and polyvinylchloride; The blend prescription is by weight: powdery government rubber 40-60 part, polyvinylchloride 40-60 part, flame-retardant plasticizer 10-15 part, fire retardant 50-100 part, carbon black 10-20 part, 5 parts in zinc oxide, 1 part of stearic acid, sulphur 1-1.5 part, accelerator 1-2 part, 1 part of stabilizer, aging inhibitor 1-2 part; Preparing process is: at first polyvinylchloride and flame-retardant plasticizer, fire retardant, carbon black, stearic acid, stabilizer are carried out heat in the high speed kneader and mix preplasticizing, after being cooled to normal temperature, add powdery government rubber, sulphur, zinc oxide, accelerator again and in the low speed kneader, carry out cold mixing, make the powdery blend; Blend is through the double screw extrusion machine mixing granulator, and then is bonded together by two extruders dynamic vulcanization and framework material; Described thermoplastic elastic body thickness is the 0.5-3 millimeter.
Described thermoplastic elastomer also can be a kind of powdery government rubber and poly blend of comprising; The blend prescription is by weight: powdery government rubber 40-60 part, polyethylene 40-60 part, flame-retardant plasticizer 10-15 part, fire retardant 60-120 part, carbon black 10-20 part, 5 parts in zinc oxide, 1 part of stearic acid, sulphur 1-1.5 part, accelerator 1-2 part, 1 part of stabilizer, aging inhibitor 1-2 part; Preparing process is: at first polyethylene and flame-retardant plasticizer, fire retardant, carbon black, stearic acid, stabilizer are carried out heat in the high speed kneader and mix preplasticizing, after being cooled to normal temperature, add powdery government rubber, sulphur, zinc oxide, accelerator again and in the low speed kneader, carry out cold mixing, make the powdery blend; Blend is through the double screw extrusion machine mixing granulator, and then is bonded together by two extruders dynamic vulcanization and framework material, and described thermoplastic elastic body thickness is the 0.5-3 millimeter.
Described thermoplastic elastomer can also be a kind of powdery government rubber and polyacrylic blend of comprising; The blend prescription is by weight: powdery government rubber 40-60 part, polypropylene 40-60 part, 5 parts of polypropylene maleic anhydride graft reactants (PP-g-MA), flame-retardant plasticizer 15-20 part, fire retardant 60-120 part, carbon black 8-15 part, aging inhibitor 1-2 part, phenol resin 3-5 part, stannous chloride 0.4-0.6 part; Preparing process is: at first polypropylene and maleic anhydride graft reactant (PP-g-MA), flame-retardant plasticizer, fire retardant, carbon black, aging inhibitor, phenol resin, stannous chloride are carried out heat in the high speed kneader and mix preplasticizing, after being cooled to normal temperature, add the powdery government rubber again and in the low speed kneader, carry out cold mixing, make the powdery blend; Blend is through the double screw extrusion machine mixing granulator, and then is bonded together by two extruders dynamic vulcanization and framework material; Described thermoplastic elastic body thickness is the 0.5-3 millimeter.
Described polysulphide rubbers combination material is a kind of blend that comprises powdery government rubber and chlorinated polyethylene rubber; The blend prescription is by weight: powdery government rubber 40-60 part, chlorinated polyethylene rubber 40-60 part, 1 part of stearic acid, 5 parts in zinc oxide, conductive black 10-15 part, flame-retardant plasticizer 10-15 part, fire retardant 50-100 part, aging inhibitor 1-2 part, accelerator 1.5-3 part, sulphur 1.5-2.5 part; Preparing process is: at first powdery chlorinated polyethylene rubber and flame-retardant plasticizer, fire retardant, carbon black, stearic acid, stabilizer are carried out heat in the high speed kneader and mix preplasticizing, after being cooled to normal temperature, add powdery government rubber, sulphur, zinc oxide, accelerator again and in the low speed kneader, carry out cold mixing, make the powdery blend; Blend is through the double screw extrusion machine mixing granulator, and then is bonded together by two extruders dynamic vulcanization and cambic horizon; Described polysulphide rubbers combination material thickness is the 0.5-3 millimeter.
Described polysulphide rubbers combination material also can be a kind of blend that comprises powdery government rubber and the poly-second rubber of chlorosulfonation, and the blend prescription is by weight: powdery government rubber 40-60 part, chlorosulfonated polyethylene rubber 40-60 part, 1 part of stearic acid, zinc oxide 3-5 part, magnesium oxide 3-5 part, lead-oxide 3-5 part, conductive black 10-15 part, flame-retardant plasticizer 10-15 part, fire retardant 50-100 part, aging inhibitor 1-2 part, accelerator 1.5-3 part, sulphur 1.5-2.5 part; Preparing process is: at first with powdery chlorosulfonated polyethylene rubber and flame-retardant plasticizer, fire retardant, carbon black, stearic acid, stabilizer, stearic acid etc. carry out heat and mix preplasticizing in the high speed kneader, after being cooled to normal temperature, add powdery government rubber, sulphur, zinc oxide, accelerator etc. again and in the low speed kneader, carry out cold mixing, make the powdery blend).Blend is through the double screw extrusion machine mixing granulator, and then is bonded together by two extruders dynamic vulcanization and cambic horizon; Described polysulphide rubbers combination material thickness is the 0.5-3 millimeter.
Described polysulphide rubbers combination material also can be a kind of blend that comprises powdery government rubber and polyurethane termoplastic elastomer, the blend prescription is by weight: powdery government rubber 40-60 part, polyurethane termoplastic elastomer 40-60 part, 1 part of stearic acid, zinc oxide 2-4 part, conductive black 10-15 part, flame-retardant plasticizer 10-15 part, fire retardant 70-130 part, aging inhibitor 1-2 part, accelerator 1.5-3 part, sulphur 1.5-2.5 part; Preparing process is: at first make blend by above-mentioned prescription in banburying, blend is through the double screw extrusion machine mixing granulator, and then is bonded together by two extruders dynamic vulcanization and cambic horizon; Described polysulphide rubbers combination material thickness is the 0.5-3 millimeter.
Described flame-retardant plasticizer can be selected a kind of or combination in chlorinated paraffin, triaryl phosphate (TCP), three (β-chloroethyl) phosphate (TCEP), three (2,3-two chloropropyls) phosphate (TDCPP), the cresyl diphenyl phosphoester (CDP); Fire retardant can be selected a kind of or combination in active aluminium hydroxide, magnesium hydroxide, Firebrake ZB, red phosphorus, antimony oxide, APP, MCA, the decabromodiphenyl oxide; Aging inhibitor can be selected N-phenyl-αNai An (antioxidant A), N-phenyl-β naphthylamines (antioxidant D), 2,2,4-trimethyl-1,2-dihyaroquinoline polymer (resin-like) (anti-aging agent RD), 2,2 '-thiobis (4-methyl-6-tert butyl phenol) (a kind of or combination among antioxidant 2246-S), the N-isopropyl-N '-diphenyl-para-phenylene diamine (antioxidant 4010NA); Accelerator can be selected a kind of or combination in 2-benzothiazolyl mercaptan (captax), dibenzothiazyl disulfide (altax), N cyclohexyl 2 benzothiazole sulfenamide (accelerant CZ), tetramethylthiuram disulfide (TM monex TD), the cadmium diethyl dithiocarbamate (accelerant C ED).
The present invention compared with prior art, the beneficial effect that has is:
Between whole belt core and overplate, increased the cambic horizon of thermoplastic elastomer, and thermoplastic elastomer and rubber and plastics all have very high bond strength, make overplate can be bonded together more firmly, thereby solved delamination, the bubble problem of rubber face of the prior art effectively by cambic horizon and whole belt core; Simultaneously, because overplate and cambic horizon have formed whole rubber cover, its thickness reaches as high as 6mm, is 4 times of prior art, thereby has prolonged the service life of inhibiting tape; In addition, owing to used thermoplastic elastomer, can take extruder for shaping and dynamic vulcanization technology, from and the purpose that can reach energy savings and enhance productivity.
Description of drawings
Accompanying drawing is the cross-sectional structure scheme drawing of product of the present invention.
Among the figure, 1-framework material, 2-cambic horizon, 3-overplate.
The specific embodiment
The understanding of the present invention will be helped by following embodiment, but content of the present invention can not be limited.Can combination in any between described thermoplastic elastomer and the described polysulphide rubbers combination material, be not subjected to the restriction of embodiment.
Embodiment 1
As shown in drawings, the unitary-core flame-resistant conveying belt of band cambic horizon of the present invention comprises framework material 1, cambic horizon 2, overplate 3.Framework material 1 is the closely knit integral body of fabric whole belt core after soaking plasticizing, and whole belt core is by cotton and syntheticfibres (terylene, nylon) Split Down zygonema respectively, is woven into fabric integral structure more than three layers or three layers with parallel then; Cambic horizon 2 is fire-retardant thermoplastic elastomers; Overplate 3 is polysulphide rubbers combination material of flame-retardant and anti-static.
Production technology is: at first the fabric whole belt core is soaked to mould and plastify into closely knit integral body, obtain framework material 1; , framework material is pasted together itself and cambic horizon by two extruders under 170-180 ℃ hot state; Once more, cambic horizon after the stickup and framework material stick on overplate on the surface of cambic horizon by two extruders under 160-170 ℃ hot state again.
Described thermoplastic elastomer is a kind of powdery government rubber and poly blend of comprising; The blend prescription is by weight: 50 parts of powdery government rubbers, 50 parts of polyethylenes, TCP12 part, 50 parts of Firebrake ZBs, 30 parts of APP, 10 parts in red phosphorus, 10 parts of carbon blacks, 5 parts in zinc oxide, 1 part of stearic acid, 1 part in sulphur, 1 part of altax, TM monex TD0.5 part, 1 part of barium zinc stabilizer, 1.5 parts of anti-aging agent RDs.Preparing process is: at first polyethylene and flame-retardant plasticizer, fire retardant, carbon black, stearic acid, stabilizer are carried out heat in the high speed kneader and mix preplasticizing, after being cooled to normal temperature, add powdery government rubber, sulphur, zinc oxide, accelerator again and in the low speed kneader, carry out cold mixing, make the powdery blend; Blend is through the double screw extrusion machine mixing granulator, and then is bonded together 1.5 millimeters of described thermoplastic elastic body thicknesses by two extruders dynamic vulcanization and framework material 1.
Described polysulphide rubbers combination material is a kind of blend that comprises powdery government rubber and chlorinated polyethylene rubber; The blend prescription is by weight: 50 parts of powdery government rubbers, 50 parts of chlorinated polyethylene rubbers, 1 part of stearic acid, 5 parts in zinc oxide, 12 parts of conductive blacks, flame-retardant plasticizer TCEP12 part, 30 parts of active aluminium hydroxides, 10 parts of antimony oxides, 15 parts of MCAs, 30 parts of Firebrake ZBs, 1 part of anti-aging agent RD, antioxidant 2246-S0.5 part, 1 part of accelerant CZ, accelerant C ED1 part, 1.5 parts in sulphur.Preparing process is: at first with powdery chlorinated polyethylene rubber and flame-retardant plasticizer, fire retardant, carbon black, stearic acid, stabilizer, stearic acid etc. carry out heat and mix preplasticizing in the high speed kneader, after being cooled to normal temperature, add powdery government rubber, sulphur, zinc oxide, accelerator etc. again and in the low speed kneader, carry out cold mixing, making the powdery blend) blend is through the double screw extrusion machine mixing granulator, and then be bonded together 1.5 millimeters of described polysulphide rubbers combination material thickness by two extruders dynamic vulcanization and thermoplastic elastomer.
Described overplate and cambic horizon form the rubber cover of shelling not open, and thickness is 3 millimeters.
Embodiment 2
Product structure and production technology are with embodiment 1.
Described thermoplastic elastomer is a kind of powdery government rubber and polyacrylic blend of comprising, the blend prescription is by weight: 50 parts of powdery government rubbers, 50 parts of polypropylene, 5 parts of polypropylene maleic anhydride graft reactants (PP-g-MA), TDCPP15 part, 40 parts in fire retardant reactive hydrogen magnesium oxide, 30 parts of APP, 10 parts in red phosphorus, 12 parts of carbon blacks, 1 part of antioxidant A, 1 part of antioxidant D, 4 parts of phenol resins, 0.5 part of stannous chloride.Preparing process is: at first with the polypropylene polypropylene, in the high speed kneader, carry out heat with maleic anhydride graft reactant (PP-g-MA), flame-retardant plasticizer, fire retardant, carbon black, aging inhibitor, phenol resin, stannous chloride etc. and mix preplasticizing, after being cooled to normal temperature, add the powdery government rubber again and in the low speed kneader, carry out cold mixing, making the powdery blend) blend is through the double screw extrusion machine mixing granulator, and then be bonded together 2 millimeters of thickness by two extruders dynamic vulcanization and the whole belt core that soaks after the plasticizing.
Described polysulphide rubbers combination material is a kind of blend that comprises powdery government rubber and the poly-second rubber of chlorosulfonation, the blend prescription is by weight: 50 parts of powdery government rubbers, 50 parts of chlorosulfonated polyethylene rubbers, 1 part of stearic acid, 4 parts in zinc oxide, 4 parts in magnesium oxide, 4 parts of lead-oxides, 12 parts of conductive blacks, 8 parts of chlorinated paraffins, TCP7 part, 50 parts of Firebrake ZBs, 10 parts of antimony oxides, 10 parts in red phosphorus, 10 parts of MCAs, antioxidant 4010 Na1 part, 0.5 part of captax, 1 part of altax, 2.2 parts in sulphur.Preparing process is: at first with powdery chlorosulfonated polyethylene rubber and flame-retardant plasticizer, fire retardant, carbon black, stearic acid, stabilizer, stearic acid etc. carry out heat and mix preplasticizing in the high speed kneader, after being cooled to normal temperature, add powdery government rubber, sulphur, zinc oxide, accelerator etc. again and in the low speed kneader, carry out cold mixing, make the powdery blend).Blend is through the double screw extrusion machine mixing granulator, and then is bonded together 2 millimeters of thickness by two extruders dynamic vulcanization and thermoplastic elastomer.
Described overplate and cambic horizon form the rubber cover of shelling not open, and thickness is 4 millimeters.
Embodiment 3
Product structure and production technology are with embodiment 1.
Described thermoplastic elastomer is a kind of blend that comprises powdery government rubber and polyvinylchloride, and the blend prescription is by weight: 45 parts of powdery government rubbers, 55 parts of polyvinylchlorides, 5 parts of chlorinated paraffins, 10 parts of CDP, 10 parts of antimony oxides, 10 parts in red phosphorus, 20 parts of Firebrake ZBs, 10 parts of decabromodiphenyl oxides, 15 parts of carbon blacks, 5 parts in zinc oxide, 1 part of stearic acid, 1 part in sulphur, 1 part of accelerant CZ, 0.5 part of TMTD, 1 part of lead sulfate tribasic, 1 part of dibasic lead phosphite, 1.5 parts of anti-aging agent RDs.Preparing process is: at first with polyvinylchloride and flame-retardant plasticizer, fire retardant, carbon black, stearic acid, stabilizer, stearic acid etc. carry out heat and mix preplasticizing in the high speed kneader, after being cooled to normal temperature, add powdery government rubber, sulphur, zinc oxide, accelerator etc. again and in the low speed kneader, carry out cold mixing, make the powdery blend); Blend is through the double screw extrusion machine mixing granulator, and then is bonded together 2.5 millimeters of thickness by two extruders dynamic vulcanization and the whole belt core that soaks after the plasticizing.
Polysulphide rubbers combination material of the present invention is a kind of blend that comprises powdery government rubber and polyurethane termoplastic elastomer, and the blend prescription is by weight: 50 parts of powdery government rubbers, 50 parts of polyurethane termoplastic elastomers, 1 part of stearic acid, 2 parts in zinc oxide, 10 parts of conductive blacks, TDCPP15 part, 12 parts of antimony oxides, 30 parts of APP, 20 parts in aluminium hydroxide, 10 parts of MCAs, 1 part of antioxidant 4010 Na, 1 part of captax, 1.5 parts of DM, 2 parts in sulphur.Preparing process is: at first make blend by above-mentioned prescription in banburying, blend is through the double screw extrusion machine mixing granulator, and then is bonded together 2.5 millimeters of thickness by two extruders dynamic vulcanization and thermoplastic elastomer.
Described overplate and cambic horizon form the rubber cover of shelling not open, and thickness is 5 millimeters.
4, embodiment testing result
According to the product that the foregoing description obtains, testing result is as follows:
Illustrate: described rubber cover is the integral body that is formed by overplate and cambic horizon, and overplate and cambic horizon are shelled not opened.By above-mentioned testing result as can be known: the product that obtains of the present invention has more performance.