CN109734975A - A kind of flame-retardant high-strength conveyer belt and its preparation process - Google Patents
A kind of flame-retardant high-strength conveyer belt and its preparation process Download PDFInfo
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Abstract
The invention discloses a kind of flame-retardant high-strength conveyer belt and its preparation processes.Flame-retardant high-strength conveyer belt includes rubber cover, bonding intermediate rubber and framework material, and rubber cover includes upper rubber cover and lower rubber cover, and framework material is wirerope or flame retardant polyester fabric；Preparation method are as follows: S1, rubber cover preparation: (1) tentatively plasticate；(2) mixing granulation；S2, bonding intermediate rubber preparation: it I, tentatively plasticates；II, it is stirred；III, grinding, deaeration；S3, the impregnation of aggregate materials, plasticizing；S4, rubber cover squeeze out fitting.Flame-retardant high-strength conveyer belt of the invention has flame retardant property good, safe and environment-friendly, and the advantage that mechanical strength is high；In addition, preparation method of the invention has the advantages that simple process, production cost are low and work efficiency is high.
Description
Technical field
The present invention relates to conveyer belt technical fields, more specifically, it relates to a kind of flame-retardant high-strength conveyer belt and its system
Standby technique.
Background technique
Rubber conveyer belt is a kind of traditional rubber products, widely used.It is mainly used for the transmitting and conveying of all kinds of materials, such as
The conveying of the underground materials of mining industry and the handling on ground, the handling of wharf materials, the excretion of industrial and mining enterprises' clinker.Early in 50 years
In generation, just China just introduced the conveyer belt technology based on natural (NR) robber materials from the former Soviet Union.Later, with section, China
The progress of technology and modernization construction iterative method, rubber conveyer belt technical research and product development have great variety, phase
After there is many new materials and new technology, such as neoprene (CR) fire retarding conveying band, high temperature resistant EP rubbers conveyer belt are new
Product.
In the prior art, application No. is disclose one kind in the Chinese invention patent application file of CN201610566159.9
Abrasion resistant fire blocking conveyer belt, feed components form as follows according to parts by weight: 22-25 parts of ethylene propylene diene rubber, neoprene 15-18
Part, 10-15 parts of nitrile rubber, 8-12 parts of haloflex, 4-6 parts of carbon black, 7-10 parts of sulphur, 3-5 parts of phosphonium flame retardant, two sulphur
Change 0.6-0.8 parts of Dibenzo thiazole, 1.2-1.5 parts of compound stabilizer, N- isopropyl-N ' -0.8-1 parts of diphenyl-para-phenylene diamine, prevent
Old agent 2-3 parts, 0.5-0.7 parts of dispersing agent, 6-9 parts of adhesive, 2-4 parts of plasticizer, 6-8 parts of asbestos fibre, phthalic acid two
8-10 parts of monooctyl ester, 16-18 parts of reinforced filling, 3-5 parts of sulphonyl amine promoter, 0.5-0.8 parts of stearic acid.
This abrasion resistant fire blocking conveyer belt wear-resisting property in the prior art can increase significantly, but because adding more chlorine
Buna and ethylene propylene diene rubber, when conveyer belt burning, smoke amount is big, and contains a large amount of toxic and harmful gas and corrosivity
Flue gas.First is that interfering going on smoothly for disaster relief work, secondary disaster is caused to lives and properties, second is that corrosion equipment and instrument, three
It is to cause environmental pollution.
In the prior art, application No. is disclose a kind of environment-friendly type in 201010241627.8 Chinese invention patent file
Steel wire rope, including in conjunction with wirerope fire-retardant rubber cover and fire-retardant core rubber.
Though existing this environment-friendly type steel wire rope solves the fire-retardant conveying of existing Steel cord
A large amount of toxic and harmful gas and smog can be led to the problem of when band burning, but because in conveyer belt reinforcement ingredient it is few so that conveyer belt
Toughness and intensity it is poor, higher mechanical property cannot be reached while meeting flame retardant property.
Summary of the invention
In view of the deficienciess of the prior art, the first purpose of this invention is to provide a kind of flame-retardant high-strength conveying
Band, it is good, safe and environment-friendly with flame retardant property, and the advantage that mechanical strength is high.
Second object of the present invention is to provide a kind of preparation process of flame-retardant high-strength conveyer belt, with technique letter
Singly, the advantages of production cost is low and work efficiency is high.
To realize above-mentioned first purpose, the present invention provides the following technical scheme that a kind of flame-retardant high-strength conveyer belt, packet
Include rubber cover, bonding intermediate rubber and framework material, rubber cover includes upper rubber cover and lower rubber cover, framework material be wirerope or
Flame retardant polyester fabric；
The rubber cover comprises the following components in parts by weight: 80-100 parts of base rubbers, 30-40 parts of composite flame-retardant agents, 20-50 parts
Reinforcing agent, 10-20 part metal oxide, 1-5 parts of stearic acid, 5-10 parts of anti-aging agents, 1-5 parts of sulphur, 20-40 parts of carbon blacks, 1-5 parts
Vulcanization accelerator, 6-12 part paraffin, 5-10 parts of haloflexes；
The composite flame-retardant agent comprises the following components in parts by weight: 2-4 parts of zinc borates, 1-5 parts of calcium stearates, 1-5 parts of aluminum sulfate,
Sodium hydroxide solution, the 1-3 parts of red phosphorus that 5-15 parts of mass fractions are 8-10%, 5-10 parts of distilled water, 1-3 parts of polyvinylpyrrolidines
Ketone, 5-10 part ammonium polyphosphate, 5-10 parts of Tripolycyanamide hydrobromides, 1-5 part 2,3- dimethyl -2,3- hexichol butyl alkane, 1-3 parts
Antimony oxide；
The reinforcing agent comprises the following components in parts by weight: 5-10 parts of glass fibres, 1-10 parts of high-performance Fanglun l414 fibers,
10-15 parts of Kevlar fabrics, 5-10 parts of nano modification silica, 1-5 parts of porous polymer beads, 20-30 parts of asphalt mixtures modified by epoxy resin
Rouge, 5-10 part zinc stearate.
By using above-mentioned technical proposal, due to by reasonably using base rubber, composite flame-retardant agent and reinforcing agent etc.
Raw material, can have preferable mechanical property while guaranteeing conveyer belt with excellent fire-retardancy, and carbon black is filled out as reinforcement
Material, can increase the intensity of conveyer belt, and wherein the zinc borate in composite flame-retardant agent can improve base rubber flame retardant property
Improving it reduces the generation of smog at charcoal simultaneously, and content fire retardant is less in composite flame-retardant agent, is conducive to fire-retardant in guarantee
Property while, guarantee the environmental-protecting performance when mechanical property and burning of conveyer belt, by add reinforcing agent, can be improved conveyer belt
Intensity, toughness and impact strength.
High-performance Fanglun l414 tensile strength is than 5-6 times of steel fibre eminence, and glass transition temperature is high, and thermal stability is good, and soft
Soft no brittleness, shock resistance is good, and self-extinguishment is good, and limit oxygen index is high, and has good anti-solvent and corrosion resistance；Kevlar
Fiber has permanent heatproof combustion resistance, and limit oxygen index is greater than 28, has high-intensitive, high abrasion and high tear, meets fire
No molten drop generates, and does not generate toxic gas, and when burning the zone face of conveyer belt, band is thick to be increased, and enhances leakproofness, makes conveyor belt surface
It is not damaged；Nano modification silica can increase substantially the mechanical property of conveyer belt, and reach enhancing and fire-retardant dual
Effect, porous polymer bead intensity is high, and hardness is big, can be improved the intensity and mechanical property of conveyer belt.
Further, the bonding intermediate rubber comprises the following components in parts by weight: 80-100 parts of base rubbers, 70-90 parts
PVC paste resin, 30-40 part composite flame-retardant agent, 20-50 portions of reinforcing agents, 20-40 parts of carbon blacks, 5-10 parts of anti-aging agents, 1-5 parts
Sulphur, 1-5 part vulcanization accelerator, 5-10 parts of RE, 1-5 parts of adhesive RA, 1-5 parts of adhesive cobalt boracylates.
By using above-mentioned technical proposal, due to using adhesive RE, it is resorcinol acetaldehyde condensation polymer, belongs to a first
The methylene receptor of white binding system is used cooperatively with adhesive RA, generates conglutination reaction, keeps framework material and bonding intermediate
Glue bond is close, to improve the intensity of conveyer belt；Cobalt boracylate has heat-resisting, moisture-proof, anti-aging and adhesive effect, it can
Bonding intermediate rubber and framework material is promoted to bond.
Further, the composite flame-retardant agent is prepared by following methods:
(1) Tripolycyanamide hydrobromide and ammonium polyphosphate are put into blender and are stirred evenly, then 2,3- are added into blender
Dimethyl -2,3- hexichol butyl alkane and antimony oxide are dried in a vacuum drying oven after mixing, grind into powder；
(2) aluminum sulfate is dissolved in water, red phosphorus is added in aluminum sulfate solution, carry out ball milling, being ground to red phosphorus diameter is 5-
10 μm, sodium hydroxide solution is added into red phosphorus, adjusting pH value is 5-6, and polyvinylpyrrolidone is added, protects at 75-85 DEG C
It is 1-2 hours warm, it is filtered, washed, dries；
(3) step (1) and step (2) gains are uniformly mixed with zinc borate, calcium stearate, carry out extruding pelletization.
By using above-mentioned technical proposal, Tripolycyanamide hydrobromide, ammonium polyphosphate and 2,3- dimethyl -2,3- bis- are used
Benzene butyl alkane mixes, and the phosphorus, nitrogen and bromine in three kinds of raw materials cooperate, and reinforces the flame retardant property of fire retardant, and three oxidations two
Antimony can form protective film in conveyor belt surface in burning and completely cut off air, reduce ignition temperature by the internal endothermic reaction, and
Antimony oxide vaporizes under high temperature, can oxygen concentration in diluent air, to play fire retardation, antimony oxide and phosphorus nitrogen bromine
After fire retardant mixing, the carbonaceous that fire retardant can be made to be formed in burning is covered on conveyor belt surface, separates oxygen, prevents conveying
Band oxygenolysis, inhibits the burning of conveyer belt.
Aluminum sulfate solution and polyvinylpyrrolidone ultrasonic disperse, polyvinylpyrrolidone and aluminum sulfate solution generate hydrogen-oxygen
Change aluminium, aluminium hydroxide can be coated on the surface of ultra-fine red phosphorus powder, and aluminium hydroxide partial size is small, large specific surface area, it is easy water suction,
Red phosphorus releases phosphorus pentoxide when burning, and consumes a large amount of oxygen, plays fire retardation, while then heat quilt that red phosphorus is released
Aluminium hydroxide absorbs, so that aluminium hydroxide be promoted to carry out dehydration, dehydration generates aqueous vapor and aluminium oxide, and aqueous vapor can be into
One step is diluted the oxygen in air, and aluminium oxide at high temperature stablize by property, can play barrier flame to conveyer belt
The effect of inside sprawling；Zinc borate and aluminium hydroxide cooperate, and in burning, zinc borate discharges aqueous vapor dilution oxygen, can
The temperature of conveyer belt is reduced, and the protective layer for the antioxygen infiltration that boron oxide and aluminium oxide can be powerful as one, improves conveying
The flame retardant property of band.
Further, the reinforcing agent is prepared by following methods: epoxy resin being put into reaction kettle, is heated to
150-180 DEG C, zinc stearate is added while stirring, until completely dissolved, glass fibre, high-performance aramid fiber are added into reaction kettle
1414 fibers and Kafra fiber are added nano modification silica and porous polymer bead, stir evenly after mixing evenly
After be put into extruder, squeeze out, be granulated.
It is epoxy melting at lotion after epoxy resin is heated by using above-mentioned technical proposal, zinc stearate is molten
Solution adds fibrous raw material in epoxy resin latex, and zinc stearate can reduce fiber flocculation, make as dispersing agent for fibre
Fiber reach in epoxy resin latex good dispersion effect again by nano modification silica and porous polymer bead with
Fiber mixing, makes nano silica and porous polymer bead be adhered to the surface of fiber, thus the intensity of reinforcing fiber, into
And enhance the intensity of conveyer belt.
Further, the modified manometer silicon dioxide partial size is 10-40nm.
By using above-mentioned technical proposal, partial size is that the modified manometer silicon dioxide of 10-40nm can be in rubber matrix
It is uniformly dispersed.
Further, described matrix rubber comprises the following components in parts by weight component: 40-50 parts of butadiene-styrene rubber, 20-25 parts it is natural
Rubber, 20-25 part butadiene rubber.
By using above-mentioned technical proposal, use butadiene-styrene rubber, natural rubber and butadiene rubber three as conveyer belt
Matrix is able to ascend wear-resisting, the heat-resisting and ageing-resistant performance of conveyer belt, and improves the flexibility and intensity of rubber conveyer belt, changes
The processing performance of kind conveyer belt, and can reduce cost, and be halogen-free in three kinds of rubber matrixs, it improves when conveyer belt burns
Environmental-protecting performance.
Further, the metal oxide is nano zine oxide, nano magnesia, nano oxygen cadmium or nano calcium oxide
One or more of mixture, particle size range 10-100nm.
By using above-mentioned technical proposal, these nano materials can not only improve the flame retardant property of conveyer belt, moreover it is possible to solve
Certainly carbon black leads to the problem of Mars in combustion, glows, is unable to self-extinguishment, and nanoparticle is added in rubber matrix, energy
Enough enhance the mechanical property of conveyer belt.
Further, the vulcanization accelerator is the 2-mercaptobenzothiazole and curing tetramethyl that mass ratio is 1:1-1.5
Base thiuram.
By using above-mentioned technical proposal, tetramethylthiuram disulfide can be improved the ageing-resistant performance of conveyer belt and resistance to
Hot property, and be used in combination with 2-mercaptobenzothiazole, there is vulcanization facilitation to rubber matrix, shorten vulcanization time, improve work
Make efficiency.
Further, the anti-aging agent is mixed by the antioxidant 4010NA and anti-aging agent RD that mass ratio is 2:3-4.
By using above-mentioned technical proposal, anti-aging agent RD is splendid to aging protection effect caused by heat and oxygen, with anti-aging agent
4010NA is used cooperatively, and can be improved the protection to aging is deflected.
To realize above-mentioned second purpose, the present invention provides the following technical scheme that a kind of flame-retardant high-strength conveyer belt
Preparation process, comprising the following steps:
The preparation of S1, rubber cover:
(1) it tentatively plasticates: by base rubber in the 2-4min that plasticates in open mill, obtaining colloid；
(2) stearic acid, anti-aging agent, composite flame-retardant agent, metal oxidation mixing granulation: are sequentially added in the colloid obtained by step (1)
Object, reinforcing agent, vulcanization accelerator, sulphur, carbon black, paraffin and haloflex are squeezed by double screw extruder after mixing
Out, it is granulated, screw speed 500-600r/min, extrusion temperature is 170-180 DEG C；
S2, the preparation for bonding intermediate rubber:
I, it tentatively plasticates: base rubber is obtained into colloid in the 2-4min that plasticates in open mill；
II, it is stirred: sequentially adding PVC paste resin, composite flame-retardant agent, reinforcing agent, sulphur into colloid obtained by step I
Sulphur, vulcanization accelerator, anti-aging agent, adhesive RE, adhesive RA and cobalt boracylate, at 130-140 DEG C, 2500-2600r/min
Stir 10-20min, paste viscosity 4000-5000Pa.s；
III, grinding, deaeration: thickener obtained by step II is put into grinder, and being ground to thickener partial size is 0.1-0.15mm, and
Thickener is put into deaeration machine, the deaeration 20-30min under -0.05 to -0.085MPa vacuum degree, it is intermediate that taking-up is put into bonding
In glue stain pond；
S3, the impregnation of aggregate materials, plasticizing:, will by framework material with the speed of 1-2m/min by bonding intermediate rubber impregnating bath
The framework material of impregnation, which enters in plasticizing box, to be plasticized, plasticization temperature be 190-210 DEG C, speed of the framework material in plasticizing box with
Impregnation speed is identical；
S4, rubber cover squeeze out fitting: the rubber cover particle prepared in step S1 is passed through into extruder and mold dynamic vulcanization,
Bonding intermediate rubber and framework material after plasticizing in step S3 carry out heating fitting, and mold temperature is 180-190 DEG C, fitting
Temperature is 160-180 DEG C.
By using above-mentioned technical proposal, rubber cover is prepared by pre- plastics and granulation first, then framework material is impregnated
Intermediate rubber is bonded, finally rubber cover is squeezed out and carries out assembly with the framework material for having impregnated bonding intermediate rubber, simple process,
High production efficiency, and low energy consumption.
In conclusion the invention has the following advantages:
The first, preferably using high-performance Fanglun l414, Kevlar fabric as reinforcing agent in the present invention, because of high-performance aramid fiber
1414 fibers have good tensile strength and thermal stability, and pliability and shock resistance are good, and limit oxygen index is high, has
Good flame retardant property and mechanical property, Kevlar fabric have high-intensitive, high abrasion and high tear energy, meet fire without molten drop
It generates, and does not generate toxic gas, while nano modification silica can increase substantially the mechanical property of conveyer belt, and reach
To enhancing and fire-retardant double effects, porous polymer bead intensity is high, and hardness is big, can be improved the intensity and mechanics of conveyer belt
Performance.
The second, use nano zine oxide, nano magnesia, nano oxygen cadmium or nano calcium oxide as metal in the present invention
Oxide is filled in conveyer belt, nano zine oxide large specific surface area, and activity is stronger, can be improved the bright and clean of rubber conveyer belt
Property, wearability and mechanical strength and anti-aging property, and these nano materials can not only improve the flame retardant property of conveyer belt, also
It can solve carbon black to lead to the problem of Mars in combustion, glow, be unable to self-extinguishment, and nanoparticle be added in rubber matrix
Son can enhance the mechanical property of conveyer belt.
Third, the present invention use Tripolycyanamide hydrobromide, ammonium polyphosphate and 2, and 3- dimethyl -2,3- hexichol butyl alkane is mixed
It closes, forms phosphorus nitrogen bromine flame retardant, reinforce the flame retardant property of fire retardant, and antimony oxide can be in conveyer belt table in burning
Face forms protective film and completely cuts off air, reduces ignition temperature by the internal endothermic reaction, and antimony oxide vaporizes under high temperature, can
Oxygen concentration in diluent air after antimony oxide is mixed with phosphorus nitrogen bromine flame retardant, can make fire retardant to play fire retardation
The carbonaceous formed in burning is covered on conveyor belt surface, separates oxygen, prevents conveyer belt oxygenolysis, inhibits the combustion of conveyer belt
It burns.
4th, composite flame-retardant agent uses aluminum sulfate solution and polyvinylpyrrolidone, polyvinylpyrrolidone in the present invention
Aluminium hydroxide is generated with aluminum sulfate solution, aluminium hydroxide can be coated on the surface of ultra-fine red phosphorus powder, and aluminium hydroxide partial size is small,
Large specific surface area, is easy water suction, and red phosphorus releases phosphorus pentoxide when burning, consumes a large amount of oxygen, play fire retardation, simultaneously
Then heat that red phosphorus is released is absorbed by aluminium hydroxide, so that aluminium hydroxide be promoted to carry out dehydration, dehydration generates water
Gas and aluminium oxide, aqueous vapor can further be diluted the oxygen in air, and aluminium oxide at high temperature stablize by property, can be with
Play the role of obstructing flame to spreading inside conveyer belt.
5th, it is cooperated in composite flame-retardant agent by using zinc borate and aluminium hydroxide in the present invention, in burning,
Zinc borate discharges aqueous vapor dilution oxygen, can reduce the temperature of conveyer belt, and boron oxide and aluminium oxide can be powerful as one
Antioxygen infiltration protective layer, improve the flame retardant property of conveyer belt.
6th, method of the invention prepares rubber cover by pre- plastics and granulation first, then by framework material dip bonding
Rubber cover is finally squeezed out and carries out assembly, simple process, production with the framework material for having impregnated bonding intermediate rubber by intermediate rubber
It is high-efficient, and low energy consumption.
Detailed description of the invention
Fig. 1 is the schematic cross-section of flame-retardant high-strength conveyer belt in the embodiment of the present invention 1；
Fig. 2 is the schematic cross-section of flame-retardant high-strength conveyer belt in the embodiment of the present invention 2.
In figure: 1, rubber cover；11, upper rubber cover；12, lower rubber cover；2, intermediate rubber is bonded；3, framework material.
Specific embodiment
Invention is further described in detail with reference to embodiments.
The preparation example 1-3 of composite flame-retardant agent
In preparation example 1-3 Tripolycyanamide hydrobromide by Wuhan Xing Zhongcheng Science and Technology Ltd. sell, polyvinylpyrrolidone by
Hundred Shun Biotechnology Co., Ltd of Shanghai sells.
Preparation example 1:(1) according to the proportion in table 1,5kg Tripolycyanamide hydrobromide and 5kg ammonium polyphosphate are put into stirring
It is stirred evenly in device, then 1kg2 is added into blender, 3- dimethyl -2,3- hexichol butyl alkane and 1kg antimony oxide, mixing
It after uniformly, dries in a vacuum drying oven, grind into powder, drying temperature is 60 DEG C；
(2) 1kg aluminum sulfate is dissolved in 5kg water, 1kg polyvinylpyrrolidone is added in aluminum sulfate solution, carry out ball milling,
Being ground to red phosphorus diameter is 5 μm, and the sodium hydroxide solution that 5kg mass fraction is 8% is added into red phosphorus, and adjusting pH value is 5, is added
Enter 1kg polyvinylpyrrolidone, keeps the temperature 1 hour at 75 DEG C, be filtered, washed, dry；
(3) step (1) and step (2) gains are uniformly mixed with 2kg zinc borate, 1kg calcium stearate, carry out extruding pelletization.
The raw material proportioning of composite flame-retardant agent in 1 preparation example 1-3 of table
Preparation example 2:(1) according to the proportion in table 1,8kg Tripolycyanamide hydrobromide and 8kg ammonium polyphosphate are put into blender
It stirs evenly, then 3kg2 is added into blender, 3- dimethyl -2,3- hexichol butyl alkane and 2kg antimony oxide are uniformly mixed
Afterwards, it dries in a vacuum drying oven, grind into powder, drying temperature is 70 DEG C；
(2) 3kg aluminum sulfate is dissolved in 8kg water, 2kg red phosphorus is added in aluminum sulfate solution, carried out ball milling, be ground to red phosphorus
Diameter is 8 μm, and the sodium hydroxide solution that 10kg mass fraction is 8% is added into red phosphorus, and adjusting pH value is 5.5, and it is poly- that 2kg is added
Vinylpyrrolidone keeps the temperature 1.5 hours at 80 DEG C, is filtered, washed, dries；
(3) step (1) and step (2) gains are uniformly mixed with 3kg zinc borate, 3kg calcium stearate, carry out extruding pelletization.
Preparation example 3:(1) according to the proportion in table 1,10kg Tripolycyanamide hydrobromide and 10kg ammonium polyphosphate are put into and are stirred
It mixes in device and stirs evenly, then 5kg2 is added into blender, 3- dimethyl -2,3- hexichol butyl alkane and 3kg antimony oxide mix
It after closing uniformly, dries in a vacuum drying oven, grind into powder, drying temperature is 80 DEG C；
(2) 5kg aluminum sulfate is dissolved in 10kg water, 3kg red phosphorus is added in aluminum sulfate solution, carried out ball milling, be ground to red
Phosphorus diameter is 10 μm, and the sodium hydroxide solution that 15kg mass fraction is 10% is added into red phosphorus, and adjusting pH value is 6, and 3kg is added
Polyvinylpyrrolidone keeps the temperature 2 hours at 85 DEG C, is filtered, washed, dries；
(3) step (1) and step (2) gains are uniformly mixed with 4kg zinc borate, 5kg calcium stearate, carry out extruding pelletization.
The preparation example 4-6 of reinforcing agent
Epoxy resin is sold by Xin Minjiacheng Science and Technology Ltd., Wuhan City in preparation example 4-6, glass fibre is by Hubei Yong Kuo section
Skill Co., Ltd sells, Kafra fiber is by Shanghai Rui Yan Trade Co., Ltd., and porous polymer bead is by this letter biology of Shanghai
Science and Technology Ltd. sells.
Preparation example 4: according to the proportion in table 2,20kg epoxy resin being put into reaction kettle, is heated to 150 DEG C, side stirring
5kg zinc stearate is added in side, until completely dissolved, it is fine that 5kg glass fibre, 1kg high-performance Fanglun l414 is added into reaction kettle
5kg nano modification silica and 1kg porous polymer bead, stirring is added after mixing evenly in peacekeeping 10kg Kafra fiber
It is put into extruder, squeezes out after uniformly, be granulated, the partial size of nano modification silica is 10mm.
The raw material proportioning of reinforcing agent in 2 preparation example 4-6 of table
Preparation example 5: according to the proportion in table 2,25kg epoxy resin being put into reaction kettle, is heated to 160 DEG C, while stirring plus
Enter 8kg zinc stearate, until completely dissolved, into reaction kettle be added 8kg glass fibre, 5kg high-performance Fanglun l414 fiber and
13kg Kafra fiber is added 8kg nano modification silica and 3kg porous polymer bead, stirs evenly after mixing evenly
After be put into extruder, squeeze out, be granulated nano modification silica partial size be 25mm.
Preparation example 6: according to the proportion in table 2,30kg epoxy resin being put into reaction kettle, is heated to 180 DEG C, side stirring
10kg zinc stearate is added in side, until completely dissolved, 10kg glass fibre, 10kg high-performance Fanglun l414 is added into reaction kettle
10kg nano modification silica and 5kg porous polymer bead is added after mixing evenly in fiber and 15kg Kafra fiber,
It is put into extruder, squeezes out after mixing evenly, the partial size for being granulated nano modification silica is 40mm.
Embodiment
Adhesive RE is selected from Changzhou Shuguang Chemical Factory, and 2-mercaptobenzothiazole is selected from the river Qingdao Sheng Daxin Trade Co., Ltd.
The 81315-2 type 2-mercaptobenzothiazole of sale, tetramethylthiuram disulfide think the limited public affairs of U.S. spring biotechnology by Shenzhen
Department sells.
Embodiment 1: a kind of flame-retardant high-strength conveyer belt referring to Fig. 1, including rubber cover 1, bonding intermediate rubber 2 and is located at viscous
The framework material 3 in intermediate rubber 2 is closed, rubber cover 11 includes positioned at the upper rubber cover 11 bonded on the upside of intermediate rubber and being located in bonding
Between the downside of glue 2 lower rubber cover 12, framework material 3 is wirerope；
The preparation process of above-mentioned flame-retardant high-strength conveyer belt, comprising the following steps:
The preparation of S1, rubber cover 1:
(1) it tentatively plasticates: obtaining glue by 80kg base rubber in the 2min that plasticates in open mill according to the raw material proportioning in table 3
Body；
(2) 1kg stearic acid, 5kg anti-aging agent, 30kg composite flame-proof mixing granulation: are sequentially added in the colloid obtained by step (1)
Agent, 10kg metal oxide, 20kg reinforcing agent, 1kg vulcanization accelerator, 1kg sulphur, 20kg carbon black, 6kg paraffin and 5kg chlorination
Polyethylene is squeezed out by double screw extruder after mixing, is granulated, screw speed 500r/min, extrusion temperature 170
℃；
S2, the preparation for bonding intermediate rubber 2:
I, it tentatively plasticates: according to the raw material proportioning in table 4,80kg base rubber being obtained into glue in the 2min that plasticates in open mill
Body；II, be stirred: 70kg PVC paste resin is sequentially added into colloid obtained by step I, multiple 30kg closes fire retardant,
20kg reinforcing agent, 1kg sulphur, 1kg vulcanization accelerator, 5kg anti-aging agent, 1kg adhesive RE, 1kg adhesive RA and 1kg boron are acylated
Cobalt stirs 10min, paste viscosity 4000Pa.s at 130 DEG C, 2500r/min；
III, grinding, deaeration: thickener obtained by step II is put into grinder, and being ground to thickener partial size is 0.1mm, and by thickener
It is put into deaeration machine, the deaeration 20min under the vacuum degree of -0.05MPa, taking-up is put into bonding 2 stain pond of intermediate rubber；
S3, the impregnation of aggregate materials 3, plasticizing:, will by framework material 3 with the speed of 1m/min by bonding 2 impregnating bath of intermediate rubber
The framework material 3 of impregnation, which enters in plasticizing box, to be plasticized, and plasticization temperature is 190 DEG C, speed and leaching of the framework material 3 in plasticizing box
Glue speed is identical；
S4, rubber cover 1 squeeze out fitting: 1 particle of rubber cover prepared in step S1 is passed through into extruder and mold dynamic vulcanization,
Bonding intermediate rubber 2 and framework material 3 after being the plasticizing in step S3 carry out heating fitting, and mold temperature is 180 DEG C, fitting
Temperature is 160 DEG C；
Base rubber includes 40kg, 20kg natural rubber and 20kg butadiene rubber in step S1 and step S2, and anti-aging agent is by quality
Than for 2:3 antioxidant 4010NA and anti-aging agent RD mix, composite flame-retardant agent is prepared by preparation example 1, metal oxidation
Object is nano zine oxide, partial size 10nm, and reinforcing agent is prepared by preparation example 4, and vulcanization accelerator is the 2- that mass ratio is 1:1
Benzothiazolyl mercaptan and tetramethylthiuram disulfide.
The raw material proportioning of rubber cover 1 in 3 embodiment 1-3 of table
The raw material proportioning of intermediate rubber 2 is bonded in 4 embodiment 1-3 of table
Embodiment 2: a kind of flame-retardant high-strength conveyer belt, referring to fig. 2, the difference from embodiment 1 is that, the raw material of rubber cover 1 is matched
Than as shown in table 3, the raw material proportioning for bonding intermediate rubber 2 is as shown in table 4, wherein rubber cover 1 and composite flame-proof in bonding intermediate rubber 2
Agent is prepared by preparation example 2, and reinforcing agent is prepared by preparation example 5, and aggregate materials are flame retardant polyester fabric, step S1 and step
Base rubber includes 45kg, 23kg natural rubber and 22kg butadiene rubber in rapid S2.
Embodiment 3: a kind of flame-retardant high-strength conveyer belt, the difference from embodiment 1 is that, the raw material proportioning of rubber cover 1 is such as
Shown in table 3, bond intermediate rubber 2 raw material proportioning it is as shown in table 4, wherein rubber cover 1 and bonding intermediate rubber 2 in composite flame-retardant agent by
Preparation example 3 is prepared, and reinforcing agent is prepared by preparation example 6, and base rubber includes 50kg, 25kg in step S1 and step S2
Natural rubber and 25kg butadiene rubber.
Embodiment 4: a kind of flame-retardant high-strength conveyer belt, the difference from embodiment 1 is that, prevent always in step S1 and step S2
Agent is mixed by the antioxidant 4010NA that mass ratio is 2:3.5 and anti-aging agent RD, and metal oxide is nano magnesia, partial size
For 50nm, vulcanization accelerator is the 2- benzothiazolyl mercaptan and tetramethylthiuram disulfide that mass ratio is 1:1.3.
Embodiment 5: a kind of flame-retardant high-strength conveyer belt, the difference from embodiment 1 is that, prevent always in step S1 and step S2
Agent is mixed by the antioxidant 4010NA that mass ratio is 2:4 and anti-aging agent RD, and metal oxide is nano calcium oxide, and partial size is
100nm, vulcanization accelerator are the 2- benzothiazolyl mercaptan and tetramethylthiuram disulfide that mass ratio is 1:1.5.
Embodiment 6: a kind of flame-retardant high-strength conveyer belt, the difference from embodiment 1 is that, plastic cement in (1) of step S1
3min, screw speed is 550r/min in step (2), and extrusion temperature is 175 DEG C；Time of plasticating in the I step of step S2 is
Raw material whipping temp is 135 DEG C, stirring rate 2550r/min, mixing time 15min in 3min, II step, paste viscosity
For 4500Pa.s；It is 0.13mm that thickener partial size is ground in III step, and deaeration vacuum degree is -0.06MPa, and inclined heated plate is
25min；3 speed of service of step S3 middle skeleton material is 1.5m/min, and plasticization temperature is 200 DEG C, and step S4 rubber cover 1 squeezes out patch
Mold temperature is 185 DEG C in conjunction, and binding temperature is 170 DEG C.
Embodiment 6: a kind of flame-retardant high-strength conveyer belt, the difference from embodiment 1 is that, plastic cement in (1) of step S1
4min, screw speed is 600r/min in step (2), and extrusion temperature is 180 DEG C；Time of plasticating in the I step of step S2 is
Raw material whipping temp is 140 DEG C, stirring rate 2600r/min, mixing time 20min in 4min, II step, paste viscosity
For 0500Pa.s；It is 0.15mm that thickener partial size is ground in III step, and deaeration vacuum degree is -0.085MPa, and inclined heated plate is
30min；3 speed of service of step S3 middle skeleton material is 2m/min, and plasticization temperature is 210 DEG C, and step S4 rubber cover 1 squeezes out fitting
Middle mold temperature is 190 DEG C, and binding temperature is 180 DEG C.
Comparative example
Comparative example 1: a kind of flame-retardant high-strength conveyer belt, the difference from embodiment 1 is that, in rubber cover 1 and bonding intermediate rubber 2 not
Add reinforcing agent.
Comparative example 2: a kind of flame-retardant high-strength conveyer belt, the difference from embodiment 1 is that, high-performance is not added in reinforcing agent
Fanglun l414 fiber and Kevlar fabric.
Comparative example 3: a kind of flame-retardant high-strength conveyer belt, the difference from embodiment 1 is that, it is not added with modification in reinforcing agent and receives
Rice silica.
Comparative example 4: a kind of flame-retardant high-strength conveyer belt, the difference from embodiment 1 is that, macromolecule is not added in reinforcing agent
Porous microsphere.
Comparative example 5: a kind of flame-retardant high-strength conveyer belt, the difference from embodiment 1 is that, rubber cover 1 and bonding intermediate rubber 2
In be not added with composite flame-retardant agent.
Comparative example 6: a kind of flame-retardant high-strength conveyer belt, the difference from embodiment 1 is that, it is not added in composite flame-retardant agent poly-
Ammonium phosphate, Tripolycyanamide hydrobromide and 2,3- dimethyl -2,3- hexichol butyl alkane.
Comparative example 7: a kind of flame-retardant high-strength conveyer belt, the difference from embodiment 1 is that, three are not added in composite flame-retardant agent
Aoxidize two antimony.
Comparative example 8: a kind of flame-retardant high-strength conveyer belt, the difference from embodiment 1 is that, boron is not added in composite flame-retardant agent
Sour zinc.
Comparative example 9: a kind of flame-retardant high-strength conveyer belt, the difference from embodiment 1 is that, sulphur is not added in composite flame-retardant agent
Sour aluminium and polyvinylpyrrolidone.
Performance detection test
One, the test of mechanical property: flame-retardant high-strength conveyer belt is prepared according to the method in embodiment 1-7 and comparative example 1-9, is pressed
According to the properties of following standard detection flame-retardant high-strength conveyer belt, and with MT668-2008, " colliery wire wire rope core is fire-retardant defeated
Send band " in standard requirements value be examination criteria value, test result is as shown in table 5:
1, tensile property: being tested according to GB/T528-2009 " measurement of vulcanized rubber and thermoplastic elastomer tensile property ",
Rate of extension is 5mm/min, and the shape of sample is dumb-bell shape；
2, it bending strength: is tested according to GB/T1696-2001 " measurement of vulcanie bending strength ", specimen size is
100nm × 7mm × 4mm, bending rate are 5mm/min；
3, it impact strength: is tested according to HG/T3845-2008 " measurement of vulcanie impact strength "；
4, thermal aging property: according to GB/T3512-2001 " vulcanized rubber or the accelerated ageing of thermoplastic elastomer hot-air and resistance to
Heat test " it is tested, experimental condition is 100 DEG C × 168h；
5, according to GB/T531.1-2008, " vulcanized rubber or thermoplastic elastomer penetration hardness test method first part: shore is hard
Degree meter method (Shao Er hardness) " it is measured.
The Mechanics Performance Testing of flame-retardant high-strength conveyer belt made from table 5 embodiment 1-7 and comparative example 1-9
According to flame-retardant high-strength conveyer belt made from method in embodiment 1-7 with good it can be seen from the data in table 5
Mechanical property, tensile strength is high, and elongation rate of tensile failure is big, and ageing-resistant performance is good.
Because being not added with reinforcing agent in comparative example 1, tensile strength, bending strength, the impact strength of conveyer belt are small, and break and stretch
Long rate is small, and ageing-resistant performance differs larger compared with Example 1, illustrates that reinforcing agent can be improved the intensity and toughness of conveyer belt,
Improve the mechanical property of conveyer belt；Comparative example 2 because being not added with high-performance Fanglun l414 fiber and Kevlar fabric in reinforcing agent,
Compared with Example 1, performance is poor for the performances such as elongation rate of tensile failure, tensile strength and the impact strength of conveyer belt, illustrates high-performance
Fanglun l414 fiber and Kevlar fabric can be improved the mechanical property of conveyer belt；Comparative example 3 changes because being not added in reinforcing agent
Property nano silica, compared with Example 1, performance is poor for the performances such as tensile strength of conveyer belt, but bending strength and implement
Example 1 is compared, no large change, illustrates that modified manometer silicon dioxide can be improved the intensity of conveyer belt；Because of reinforcing agent in comparative example 4
In be not added with porous polymer bead, the intensity and impact strength of conveyer belt differ larger compared with Example 1, but bending strength
Compared with Example 1, it is not much different, illustrates that porous polymer bead can be improved the intensity of conveyer belt.
Comparative example 5 is because being not added with composite flame-retardant agent, the performances such as tensile strength, the bending strength of conveyer belt in conveying carrying raw material
Although meeting the standard requirements value in MT668-2008 " steel wire rope ", with phase in embodiment 1
Than performance is poor, illustrates that composite flame-retardant agent can be improved the intensity of conveyer belt；Comparative example 6 is poly- because being not added in composite flame-retardant agent
Ammonium phosphate, Tripolycyanamide hydrobromide and 2,3- dimethyl -2,3- hexichol butyl alkane, the properties of conveyer belt are although compound
Standard requirements value in MT668-2008 " steel wire rope ", but compared with Example 1, properties
It is poor, illustrate to add ammonium polyphosphate, Tripolycyanamide hydrobromide and 2,3- dimethyl -2,3- hexichol butyl in composite flame-retardant agent
Alkane can be improved the intensity of conveyer belt；For comparative example 7 because being not added with antimony oxide in composite flame-retardant agent, the stretching of conveyer belt is strong
Degree, elongation rate of tensile failure and bending strength are not much different compared with Example 1, and impact strength difference is larger, illustrate antimony oxide
It can be improved the intensity of conveyer belt；Comparative example 8 is broken because being not added with zinc borate, the tensile strength of conveyer belt in composite flame-retardant agent
Elongation and bending strength are not much different compared with Example 1, and impact strength difference is larger, illustrate that zinc borate can be improved conveying
The intensity of band；Comparative example 9 does not coat hydrogen to red phosphorus surface because being not added with aluminum sulfate and polyvinylpyrrolidone in composite flame-retardant agent
Aluminium oxide, the performances such as tensile strength, the impact strength of conveyer belt differ larger compared with Example 1, illustrate aluminum sulfate and poly- second
Alkene pyrrolidone can be improved the intensity and toughness of conveyer belt.
Two, flame-retardant high-strength conveyer belt is prepared according to the method in embodiment 1-7 and comparative example 1-9, according to following standard
The flame retardant property of flame-retardant high-strength conveyer belt is detected, testing result is as shown in table 6:
1, it limit oxygen index: is tested according to GB/T10707-2008 " the measurement oxygen index method of rubber combustion performance "；
2, smoke density is produced: according to ASTMD-2843 " standard test method of the density of Plastics Combustion or the flue gas of decomposition generation "
It is tested, and to be marked specified in GB/T20286-2006 " the fire-retardant product in public place and component combustibility requires and mark "
Quasi- value is testing standard value；
3, hydrogen halide content；It is tested according to the method in EN5067-2-1；
4, it halogen total amount: is tested according to the method in PREN14582-2002；
5, it smoke amount: is tested according to NBS smoke test method；
6, it roll friction: is tested according to GB/T7986-1997 " roller of conveyer belt friction test method ", and with MT668-
Standard requirements value in 2008 " steel wire ropes " is examination criteria value.
The flame retardant property of flame-retardant high-strength conveyer belt made from table 6 embodiment 1-7 and comparative example 1-9 is tested
According to flame-retardant high-strength conveyer belt limit oxygen made from method in embodiment 1-7 it can be seen from the data in table 5
Index is high, and smoke density is small after burning, meet GB/T20286-2006 " the fire-retardant product in public place and component combustibility require and
Mark " specified in standard value, and hydrogen halide content and total halogen content are 0, are halogen-free, smoke amount is few, and roller
Friction temperature meets the standard requirements value in MT668-2008 " steel wire rope ", illustrates according to embodiment
Flame-retardant high-strength conveyer belt made from method has good flame retardant property in 1-7, and smoke amount is few when burning, and nothing has poison gas
Body, more environmental protection, safety.
Because being not added with reinforcing agent in comparative example 1, the limit oxygen index of conveyer belt is less than embodiment 1, and wherein content gas is total
Although amount test number meets the standard value in EN5067-2-1, although halogen total amount meets the standard in PREN14582-2002
Value, but hydrogen halide content and halogen total amount are all larger than the numerical value in embodiment 1, illustrate that reinforcing agent can be improved conveyer belt
Oxygen index (OI), and reduce the content of toxic gas when conveyer belt burns；Comparative example 2 is because being not added with high-performance Fanglun l414 in reinforcing agent
The limit oxygen index of fiber and Kevlar fabric, conveyer belt is lower compared with embodiment, and halogen amount increases, and illustrates high-performance
Fanglun l414 fiber and Kevlar fabric can be improved the flame retardant property of conveyer belt, and make conveyer belt when burning without toxic gas
It releases；Comparative example 3 is because being not added with modified manometer silicon dioxide in reinforcing agent, though conveyer belt limit oxygen index is met the requirements of the standard,
But compared with Example 1, limit oxygen index is declined, and content gas increases when burning, illustrates modified nano-silica
Silicon can be improved the flame retardant property of conveyer belt, and release conveyer belt when burning without pernicious gas；Because in reinforcing agent in comparative example 4
It is not added with porous polymer bead, conveyer belt properties compared with Example 1, are not much different, and illustrate porous polymer bead
It can be improved conveyer belt flame retardant property.
Comparative example 5 is because being not added with composite flame-retardant agent in conveying carrying raw material, and conveyer belt limit oxygen index is only 30.3%, with reality
It is larger compared to difference to apply example 1, and halogen total amount and hydrogen halide content are more, illustrate that composite flame-retardant agent can be improved conveyer belt
Flame retardant property, and make conveyer belt when burning without toxic gas release；Comparative example 6 is because being not added with polyphosphoric acid in composite flame-retardant agent
Ammonium, Tripolycyanamide hydrobromide and 2,3- dimethyl -2,3- hexichol butyl alkane, the properties of conveyer belt are poor, and limit oxygen refers to
Number is smaller, and halogen amount is larger, illustrates to add ammonium polyphosphate, Tripolycyanamide hydrobromide and 2,3- diformazan in composite flame-retardant agent
Base -2,3- hexichol butyl alkane, can be improved the flame retardant property of conveyer belt, and without toxic gas when conveyer belt burns, more environmental protection,
Safety；For comparative example 7 because being not added with antimony oxide in composite flame-retardant agent, the limit oxygen index of conveyer belt is small, and halogen total amount is big, and
By a large amount of white cigarettes when burning, illustrate that antimony oxide can be improved the flame retardant property of conveyer belt, when conveyer belt being made to burn, smoke density
It is small, and smoke amount is few；Comparative example 8 because being not added with zinc borate in composite flame-retardant agent, the limit oxygen index of conveyer belt, halogen total amount and
Hydrogen halide is halogen to differ larger compared with Example 1, illustrates that zinc borate can be improved the flame retardant property of conveyer belt, and convey
When band burning, more environmental protection and safety；Comparative example 9 is because being not added with aluminum sulfate and polyvinylpyrrolidone in composite flame-retardant agent, not
To red phosphorus surface cladded aluminium hydroxide, the performances such as limit oxygen index, smoke density and the smoke amount of conveyer belt are compared with Example 1
It differs larger, illustrates that aluminum sulfate and polyvinylpyrrolidone can be improved the flame retardant property of conveyer belt, and when conveyer belt burning, nothing
Toxic gas is released, more Environmental Safety.
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 flame-retardant high-strength conveyer belt, which is characterized in that including rubber cover (1), bonding intermediate rubber (2) and framework material
(3), rubber cover (1) includes upper rubber cover (11) and lower rubber cover (12), and framework material (3) is that wirerope or flame-resistant terylene are knitted
Object；
The rubber cover (1) comprises the following components in parts by weight: 80-100 parts of base rubbers, 30-40 parts of composite flame-retardant agents, 20-
50 portions of reinforcing agents, 10-20 parts of metal oxides, 1-5 parts of stearic acid, 5-10 parts of anti-aging agents, 1-5 parts of sulphur, 20-40 parts of carbon blacks,
1-5 parts of vulcanization accelerators, 6-12 parts of paraffin, 5-10 parts of haloflexes；
The composite flame-retardant agent comprises the following components in parts by weight: 2-4 parts of zinc borates, 1-5 parts of calcium stearates, 1-5 parts of sulfuric acid
Aluminium, 5-15 part mass fraction are sodium hydroxide solution, the 1-3 parts of red phosphorus of 8-10%, 5-10 parts of distilled water, 1-3 parts of polyvinyl pyrroles
Alkanone, 5-10 part ammonium polyphosphate, 5-10 parts of Tripolycyanamide hydrobromides, 1-5 part 2,3- dimethyl -2,3- hexichol butyl alkane, 1-3
Part antimony oxide；
The reinforcing agent comprises the following components in parts by weight: 5-10 parts of glass fibres, 1-10 parts of high-performance Fanglun l414 fibers,
10-15 parts of Kevlar fabrics, 5-10 parts of nano modification silica, 1-5 parts of porous polymer beads, 20-30 parts of asphalt mixtures modified by epoxy resin
Rouge, 5-10 part zinc stearate.
2. flame-retardant high-strength conveyer belt according to claim 1, which is characterized in that the bonding intermediate rubber (2) include with
The component of lower parts by weight: 80-100 parts of base rubbers, 70-90 parts of PVC paste resins, 30-40 parts of composite flame-retardant agents, 20-50
Part reinforcing agent, 20-40 parts of carbon blacks, 5-10 parts of anti-aging agents, 1-5 parts of sulphur, 1-5 parts of vulcanization accelerators, 5-10 parts of adhesives RE, 1-
RA, 1-5 parts of cobalt boracylates of 5 parts of adhesives.
3. flame-retardant high-strength conveyer belt according to claim 1, which is characterized in that the composite flame-retardant agent is by following methods
It is prepared:
(1) Tripolycyanamide hydrobromide and ammonium polyphosphate are put into blender and are stirred evenly, then 2,3- are added into blender
Dimethyl -2,3- hexichol butyl alkane and antimony oxide are dried in a vacuum drying oven after mixing, grind into powder；
(2) aluminum sulfate is dissolved in water, red phosphorus is added in aluminum sulfate solution, carry out ball milling, being ground to red phosphorus diameter is 5-
10 μm, sodium hydroxide solution is added into red phosphorus, adjusting pH value is 5-6, and polyvinylpyrrolidone is added, protects at 75-85 DEG C
It is 1-2 hours warm, it is filtered, washed, dries；
(3) step (1) and step (2) gains are uniformly mixed with zinc borate, calcium stearate, carry out extruding pelletization.
4. flame-retardant high-strength conveyer belt according to claim 1, which is characterized in that the reinforcing agent is prepared by following methods
It forms: epoxy resin is put into reaction kettle, be heated to 150-180 DEG C, zinc stearate is added while stirring, wait be completely dissolved
Afterwards, glass fibre, high-performance Fanglun l414 fiber and Kafra fiber are added into reaction kettle, after mixing evenly, nanometer is added
Improved silica and porous polymer bead, are put into extruder after mixing evenly, squeeze out, and are granulated.
5. flame-retardant high-strength conveyer belt according to claim 4, which is characterized in that the modified manometer silicon dioxide partial size
For 10-40nm.
6. flame-retardant high-strength conveyer belt according to claim 2, which is characterized in that described matrix rubber includes following weight
The component of part: 40-50 parts of butadiene-styrene rubber, 20-25 parts of natural rubbers, 20-25 parts of butadiene rubbers.
7. flame-retardant high-strength conveyer belt according to claim 2, which is characterized in that the metal oxide is nano oxidized
The mixture of one or more of zinc, nano magnesia, nano oxygen cadmium or nano calcium oxide, particle size range 10-
100nm。
8. flame-retardant high-strength conveyer belt according to claim 2, which is characterized in that the vulcanization accelerator is that mass ratio is
The 2-mercaptobenzothiazole and tetramethylthiuram disulfide of 1:1-1.5.
9. flame-retardant high-strength conveyer belt according to claim 2, which is characterized in that the anti-aging agent is 2:3- by mass ratio
4 antioxidant 4010NA and anti-aging agent RD mixes.
10. a kind of preparation process of -9 any flame-retardant high-strength conveyer belts according to claim 1, which is characterized in that packet
Include following steps:
The preparation of S1, rubber cover (1):
(1) it tentatively plasticates: by base rubber in the 2-4min that plasticates in open mill, obtaining colloid；
(2) stearic acid, anti-aging agent, composite flame-retardant agent, metal oxidation mixing granulation: are sequentially added in the colloid obtained by step (1)
Object, reinforcing agent, vulcanization accelerator, sulphur, carbon black, paraffin and haloflex are squeezed by double screw extruder after mixing
Out, it is granulated, screw speed 500-600r/min, extrusion temperature is 170-180 DEG C；
S2, the preparation for bonding intermediate rubber (2):
I, it tentatively plasticates: base rubber is obtained into colloid in the 2-4min that plasticates in open mill；
II, it is stirred: sequentially adding PVC paste resin, composite flame-retardant agent, reinforcing agent, sulphur into colloid obtained by step I
Sulphur, vulcanization accelerator, anti-aging agent, adhesive RE, adhesive RA and cobalt boracylate, at 130-140 DEG C, 2500-2600r/min
Stir 10-20min, paste viscosity 4000-5000Pa.s；
III, grinding, deaeration: thickener obtained by step II is put into grinder, and being ground to thickener partial size is 0.1-0.15mm, and
Thickener is put into deaeration machine, the deaeration 20-30min under -0.05 to -0.085MPa vacuum degree, it is intermediate that taking-up is put into bonding
In glue (2) stain pond；
S3, the impregnation of aggregate materials (3), plasticizing: framework material (3) is passed through into bonding intermediate rubber (2) with the speed of 1-2m/min
The framework material (3) of impregnation is entered in plasticizing box and is plasticized by impregnating bath, and plasticization temperature is 190-210 DEG C, and framework material (3) exists
Speed in plasticizing box is identical as impregnation speed；
S4, rubber cover (1) squeeze out fitting: rubber cover (1) particle prepared in step S1 is passed through extruder and mold dynamic
Vulcanization, bonding intermediate rubber (2) and framework material (3) after being the plasticizing in step S3 carry out heating fitting, and mold temperature is
180-190 DEG C, binding temperature is 160-180 DEG C.
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Application publication date: 20190510 |