CN109504313A - A kind of flame-proof armored rope core conveyer belt core rubber and preparation method thereof - Google Patents
A kind of flame-proof armored rope core conveyer belt core rubber and preparation method thereof Download PDFInfo
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- CN109504313A CN109504313A CN201811289004.0A CN201811289004A CN109504313A CN 109504313 A CN109504313 A CN 109504313A CN 201811289004 A CN201811289004 A CN 201811289004A CN 109504313 A CN109504313 A CN 109504313A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J111/00—Adhesives based on homopolymers or copolymers of chloroprene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a kind of flame-proof armored rope core conveyer belt core rubbers and preparation method thereof, the core rubber is composed of the following raw materials in parts by weight: being composed of the following raw materials in parts by weight: 80 ~ 100 parts of neoprene, 30 ~ 40 parts of organic silicon rubber, poly- fluorosilicone -8 ~ 10 parts of polyvinyl fluoride block copolymer, 6 ~ 10 parts of Polyborosiloxane, 10-20 parts of fire retardant, 25 ~ 35 parts of reinforcing agent coumarone resin, 25 ~ 35 parts of filler modified kaolin, 3 ~ 5 parts of sulphur, 0.5 ~ 2.5 part of accelerant CZ, 15 ~ 25 parts of chlorinated paraffin, 1 ~ 4 part of antioxidant NBC, 5 ~ 15 parts and silane coupling agent 1-3 parts of epobond epoxyn.Invention significantly improves the flame retardant properties of steel cable core conveying belt, extend service life.
Description
Technical field
The present invention relates to steel cable core conveying belt field, more particularly, to a kind of flame-proof armored rope core conveyer belt core rubber and its
Preparation method.
Background technique
Steel cable core conveying belt is made of coating, wire rope skeleton layer, core rubber layer.Conveyer belt be with longitudinal fixed spacing,
The high-performance galvanized steel wire rope of isostension arrangement is framework material, up and down and the overcoating different performance in both sides, different-thickness core rubber,
Rubber cover is formed, is vulcanized.Wirerope play the role of it is load bearing, rubber play protection wirerope.Rubber
Bonding with wirerope is the key that conveyer belt production.Core rubber and wirerope directly permeate bonding, can prevent wirerope corrosion, core
The performance of glue largely determines the service life of steel cable core conveying belt.
Currently, steel cable core conveying belt is in mine, underground and other be not suitable for undertaking in manually-operated adverse circumstances
The transport task of the overwhelming majority, these environment more harsh requirement is proposed to the fire resistance of material, but with transmission
Band works long hours, frictional heat generation and environment heating, bring fire hidden danger be it is unavoidable, this is just to conveyer belt
Flame retardant property is made a further demand, and needing to improve it, anti-dynamic fatigue is poor between core rubber and wirerope in use,
Reduction easy to aging.As the extension core rubber and wirerope of time of delivery answer fatigue aging that adhesive strength is caused to decline, with temperature
Raising, the rubber cover of conveyer belt and the adhesive strength of wirerope decline to a great extent problem while, to its flame retardant property make into
The improvement of one step.
Summary of the invention
In view of this, in view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of flame-proof armored rope core conveyer belts
Core rubber, improves the flame retardant property of conveyer belt, while having achieved the effect that extend steel cable core conveying belt service life.
In order to achieve the above objectives, the invention adopts the following technical scheme:
A kind of flame-proof armored rope core conveyer belt core rubber, is composed of the following raw materials in parts by weight: 80~100 parts of neoprene,
30~40 parts of organic silicon rubber, poly- fluorosilicone -8~10 parts of polyvinyl fluoride block copolymer, 6~10 parts of Polyborosiloxane, resistance
Agent 10-20 parts of combustion, 25~35 parts of filler modified kaolin, 3~5 parts of sulphur, promotees by 25~35 parts of reinforcing agent coumarone resin
Into agent CZ0.5~2.5 part, 15~25 parts of chlorinated paraffin, 1~4 part of antioxidant NBC, 5~15 parts of epobond epoxyn and silicon
1-3 parts of alkane coupling agent.
As a preferred solution of the present invention, the fire retardant is ultrafine aluminium hydroxide-magnesium hydroxide equimolar amounts mixing.
As a preferred solution of the present invention, the modified kaolin is kaolin mullite after 1500 DEG C of high-temperature process
Change gained;High-temperature process is phasic course, specific as follows:
Al2Si2O5(OH)4 550-770℃Al2O3.2SiO2+2H2O
(kaolinite) (metakaolinite)
2(Al2O3.2SiO2)925℃2Al2O3.3SiO2+SiO2
(metakaolinite) (aluminium silicon bores spar) (amorphous)
3(Al2O3.2SiO2)1400℃3Al2O3.2SiO2+SiO2
(like mullite) (mullite) (cristobalite)
The preparation process of the Polyborosiloxane is as follows: weighing 100 parts by weight ethyoxyl silicone oil, is added in flask, is added
The boric acid of 25-70 parts by weight stops stirring after stirring to boric acid dissolution at 60 DEG C -80 DEG C, is warming up to 120-140 DEG C, steams
Ethyl alcohol both obtained for heat preservation 2-4 hours.
As a preferred solution of the present invention, poly- fluorosilicone-polyvinyl fluoride block copolymer synthesis, including walk as follows
It is rapid:
1) synthesis of poly- fluorosilicone: the air in three-necked flask being replaced with nitrogen and is discharged, is added the 1 of 80.0g, and 3,
5- tri- (trifluoro propyl methyl) cyclotrisiloxane, 2mL trifluoromethane sulfonic acid, 10mL deionized water, warming while stirring to 60 DEG C,
Hexamethyl cyclotetrasiloxane is at the uniform velocity added dropwise, adjusts pH=8.5 after reacting 2h, accesses distilling apparatus and is warming up to 80 DEG C;It will after 6h
It distills obtained intermediate product and pours into -70 DEG C of storage over night in cold hydrazine rapidly;Intermediate product in cold hydrazine was poured into burning in second day
Bottle in, side be added dropwise volume ratio 1: 3 hexamethyl cyclotetrasiloxane and isopropanol butyl ether mixed liquor, side temperature programming to 40 DEG C,
While micro stannous chloride is added, up to poly- fluorosilicone after reaction 6h;
2) preparation of polyvinyl fluoride: vinyl fluoride and a certain amount of polyvinyl alcohol are fitted into 250mL three-necked flask, addition is gone
1h is vibrated after ionized water to uniform;It is put into the water bath of 65 DEG C of preparatory constant temperature later, K is added dropwise2S2O8Solution, rate of addition
0.2mL/min, until reaction terminates;Products therefrom is first washed with dilute sulfuric acid, then is washed with propylene glycol, it is molten that thickener adjusting is added
Liquid system viscosity is to get the polyvinyl fluoride solution needed for this experiment;
3) poly- fluorosilicone-polyvinyl fluoride block copolymer preparation: with syringe pump respectively by poly- fluorosilicone and trifluoro
Change in boron injection flask, a small amount of n-hexane is added, vacuum distillation removes the lesser poly- fluorosilicone of molal weight at 30 DEG C;Together
When propylene oxide ether and polyvinyl fluoride is added, be brought rapidly up to 120 DEG C, utilize liquid nitrogen quenching reaction after reacting 8h, solution is existed
It precipitates, filter in 0 DEG C of ether, end-capping reagent-hydroxy silicon oil is added and terminates polymerization reaction, with ether, deionized water washing impurity-removing,
It is dried in vacuo after isolating organic phase up to poly- fluorosilicone-polyvinyl fluoride block copolymer.
The preparation method of flame-proof armored rope core conveyer belt core rubber, includes the following steps:
(1) by the neoprene of above-mentioned parts by weight, organic silicon rubber, poly- fluorosilicone-polyvinyl fluoride block copolymer gathers
It plasticates in silicon boroxane investment open mill, the sizing material plasticated is spare;
(2) sizing material plasticated is put into mixer, sequentially adds the modified kaolinite of reinforcing agent coumarone resin, filler
Soil, fire retardant, chlorinated paraffin, antioxidant NBC, epobond epoxyn and silane coupling agent, sulphur and accelerant CZ stirring are equal
Rubber compound is obtained after even;
(3) sizing material being kneaded is squeezed out into the film of respective thickness by open mill to get fire-retardant combustion Steel cord is arrived
Conveyer belt core rubber.
The utility model has the advantages that
1. the present invention has good physical mechanical property, oil resistant is heat-resisting, resistance to combustion, resistance to day based on neoprene
Light, resistance to ozone, acid and alkali-resistance, chemical-resistant reagent have certain flame retardant property, but cold-resistant and storage property is poor, and silicon rubber is
Using silicon-oxygen key as the organosilicon polymer of main chain, there are the performances such as good high-low temperature resistant, insulation, physiology inert, with neoprene
The rubber effect of complementing one another adds poly- fluorosilicone-polyvinyl fluoride block copolymer, poly- fluorosilicone-polyvinyl fluoride block
Copolymer is by organic rubber termination process, this is because having enough " boron-fluorine electron bridge " and another " boron-fluorine electricity at this time
The big electronics cloud bridge of sub- bridge " formation " fluoro- boron-boron-fluorine " forms " boron-fluorine electronics cloud network " in turn, efficiently solves
The inhibition that vinyl fluoride moves on strand, increase vinyl fluoride and fluorosilicone reacts insertion point, crosslink density
It then increases to stable afterwards to a certain degree.The elasticity of block copolymer is splendid, and cushion performance is excellent, it may have thermal insulation outstanding
Energy.Polyborosiloxane is introduced, the cage structure of carbon decaborane can greatly improve the thermal stability of organosilicon and neoprene,
Enhance steel cable core conveying belt anti-dynamic fatigue between core rubber and wirerope in use, solves the raising because of temperature
Caused by conveyer belt rubber cover and wirerope adhesive strength decline the problem of.
2. the active group that chemical reaction is easy to happen in rubber material and its process include α hydrogen atom,
COOH ,-OH and-CN, wait the performance and used life for directly affecting core rubber, in order to improve the performance of core rubber, extend and use the longevity
Life, the present invention add epobond epoxyn, vulcanizing agent, vulcanization accelerator, anti-aging agent in rubber material, prepared in core rubber
Promote reaction in journey, and forms chemical bond at interface to improve chemical bond power between adhesive interface.The core rubber pole made
Property is stronger, and the Chemical bond energy of formation is higher, non-aging reduction.Ultrafine aluminium hydroxide is added in ingredient and magnesium hydroxide is made
For fire retardant, the flame retardant property of core rubber can be improved, ultrafine aluminium hydroxide large specific surface area does not generate toxic and harmful gas, and
Magnesium hydroxide synergistic effect, also has reinforcement and filling effect while playing flame retardant effect.
Specific embodiment
Embodiment 1
A kind of flame-proof armored rope core conveyer belt core rubber, is composed of the following raw materials in parts by weight: 80 parts of neoprene, organosilicon
30 parts of rubber, poly- fluorosilicone -8 parts of polyvinyl fluoride block copolymer, 6 parts of Polyborosiloxane, 10 parts of fire retardant, reinforcing agent Gu Ma
25 parts of grand resin, 25 parts of filler modified kaolin, 3 parts of sulphur, 0.5 part of accelerant CZ, 15 parts of chlorinated paraffin, antioxidant NBC
1 part, 5 parts and 1 part of silane coupling agent of epobond epoxyn.
The preparation process of the Polyborosiloxane is as follows: weighing 100 parts by weight ethyoxyl silicone oil, is added in flask, is added
The boric acid of 25 parts by weight stops stirring after stirring to boric acid dissolution at 60 DEG C, is warming up to 120 DEG C, steams ethyl alcohol, and heat preservation 2 is small
When both.
The synthesis of poly- fluorosilicone-polyvinyl fluoride block copolymer, includes the following steps:
1) synthesis of poly- fluorosilicone: the air in three-necked flask being replaced with nitrogen and is discharged, is added the 1 of 80.0g, and 3,
5- tri- (trifluoro propyl methyl) cyclotrisiloxane, 2mL trifluoromethane sulfonic acid, 10mL deionized water, warming while stirring to 60 DEG C,
Hexamethyl cyclotetrasiloxane is at the uniform velocity added dropwise, adjusts pH=8.5 after reacting 2h, accesses distilling apparatus and is warming up to 80 DEG C;It will after 6h
It distills obtained intermediate product and pours into -70 DEG C of storage over night in cold hydrazine rapidly;Intermediate product in cold hydrazine was poured into burning in second day
Bottle in, side be added dropwise volume ratio 1: 3 hexamethyl cyclotetrasiloxane and isopropanol butyl ether mixed liquor, side temperature programming to 40 DEG C,
While micro stannous chloride is added, up to poly- fluorosilicone after reaction 6h;
2) preparation of polyvinyl fluoride: vinyl fluoride and a certain amount of polyvinyl alcohol are fitted into 250mL three-necked flask, addition is gone
1h is vibrated after ionized water to uniform;It is put into the water bath of 65 DEG C of preparatory constant temperature later, K is added dropwise2S2O8Solution, rate of addition
0.2mL/min, until reaction terminates;Products therefrom is first washed with dilute sulfuric acid, then is washed with propylene glycol, it is molten that thickener adjusting is added
Liquid system viscosity is to get the polyvinyl fluoride solution needed for this experiment;
3) poly- fluorosilicone-polyvinyl fluoride block copolymer preparation: with syringe pump respectively by poly- fluorosilicone and trifluoro
Change in boron injection flask, a small amount of n-hexane is added, vacuum distillation removes the lesser poly- fluorosilicone of molal weight at 30 DEG C;Together
When propylene oxide ether and polyvinyl fluoride is added, be brought rapidly up to 120 DEG C, utilize liquid nitrogen quenching reaction after reacting 8h, solution is existed
It precipitates, filter in 0 DEG C of ether, end-capping reagent-hydroxy silicon oil is added and terminates polymerization reaction, with ether, deionized water washing impurity-removing,
It is dried in vacuo after isolating organic phase up to poly- fluorosilicone-polyvinyl fluoride block copolymer.
The preparation method of flame-proof armored rope core conveyer belt core rubber, includes the following steps:
(1) by the neoprene of above-mentioned parts by weight, organic silicon rubber, poly- fluorosilicone-polyvinyl fluoride block copolymer gathers
It plasticates in silicon boroxane investment open mill, the sizing material plasticated is spare;
(2) sizing material plasticated is put into mixer, sequentially adds the modified kaolinite of reinforcing agent coumarone resin, filler
Soil, fire retardant, chlorinated paraffin, antioxidant NBC, epobond epoxyn and silane coupling agent, sulphur and accelerant CZ stirring are equal
Rubber compound is obtained after even;
(3) sizing material being kneaded is squeezed out into the film of respective thickness by open mill to get fire-retardant combustion Steel cord is arrived
Conveyer belt core rubber.
Embodiment 2
A kind of flame-proof armored rope core conveyer belt core rubber, is composed of the following raw materials in parts by weight: 100 parts of neoprene, organic
40 parts of silicon rubber, poly- fluorosilicone -10 parts of polyvinyl fluoride block copolymer, 10 parts of Polyborosiloxane, 20 parts of fire retardant, reinforcement
35 parts of agent coumarone resin, 35 parts of filler modified kaolin, 5 parts of sulphur, 2.5 parts of accelerant CZ, 25 parts of chlorinated paraffin, prevent
4 parts of old agent NBC, 15 parts and 3 parts of silane coupling agent of epobond epoxyn.
Embodiment is shown in the preparation process of the Polyborosiloxane, the synthesis of poly- fluorosilicone-polyvinyl fluoride block copolymer
1。
The preparation method of flame-proof armored rope core conveyer belt core rubber is shown in embodiment 1.
Embodiment 3
A kind of flame-proof armored rope core conveyer belt core rubber, is composed of the following raw materials in parts by weight: 90 parts of neoprene, organosilicon
35 parts of rubber, poly- fluorosilicone -9 parts of polyvinyl fluoride block copolymer, 8 parts of Polyborosiloxane, 15 parts of fire retardant, reinforcing agent Gu Ma
30 parts of grand resin, 30 parts of filler modified kaolin, 4 parts of sulphur, 1.5 parts of accelerant CZ, 20 parts of chlorinated paraffin, antioxidant NBC
2.5 parts, 10 parts and 2 parts of silane coupling agent of epobond epoxyn.
Embodiment is shown in the preparation process of the Polyborosiloxane, the synthesis of poly- fluorosilicone-polyvinyl fluoride block copolymer
1。
The preparation method of flame-proof armored rope core conveyer belt core rubber is shown in embodiment 1.
Comparative example 1
Comparative example 1 is substantially the same manner as Example 3, the difference is that, by the neoprene of the parts by weight such as Polyborosiloxane use
Rubber substitution.
Comparative example 2
Comparative example 2 is substantially the same manner as Example 3, the difference is that, fire retardant is substituted with ultrafine aluminium hydroxide.
Performance test
The physical mechanical property test method of conveyer belt core rubber is tested the mechanical property of composite material by ASTMD412 standard
Energy.Stretching experiment uses 4.00mm wide cut-off knife dumbbell plate, tensile speed 500mm/min without exception, and test temperature is 25 DEG C.
Wirerope used in wirerope extraction and tired extraction performance is ST1600.Other performance tests have come according to ASTM standard
At.
Table 1: comparative example of the present invention, the performance of embodiment compare
Compare the stretching it can be seen that embodiment 1-3 conveyer belt core rubber by the performance of Examples 1 to 3 and comparative example 1,2
Intensity is big, but hardness is high, this can guarantee core rubber good processing performance during cold moudling;And the steel wire of conveyer belt core rubber
Tired extraction force of restricting increases, this illustrates that the bonding of core rubber and wirerope of the invention is improved;100% stress at definite elongation exists
6.7Mpa or more, for 300% stress at definite elongation in 14.9Mpa or more, wirerope fatigue extracts 24000 or more number, horizontal firing out
Rate is greater than 30.15, and thermal weight loss central temperature is higher than 387 DEG C.Illustrate that core rubber rubber compound has good processability in the present invention
Energy, the tired extraction performance of conveyer belt core rubber are excellent, while flame retardant property is good.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, this field is common
Other modifications or equivalent replacement that technical staff makes technical solution of the present invention, without departing from technical solution of the present invention
Spirit and scope, be intended to be within the scope of the claims of the invention.
Claims (5)
1. a kind of flame-proof armored rope core conveyer belt core rubber, which is characterized in that be composed of the following raw materials in parts by weight: neoprene 80
~ 100 parts, 30 ~ 40 parts of organic silicon rubber, poly- fluorosilicone -8 ~ 10 parts of polyvinyl fluoride block copolymer, Polyborosiloxane 6 ~ 10
Part, 10-20 parts of fire retardant, 25 ~ 35 parts of reinforcing agent coumarone resin, 25 ~ 35 parts of filler modified kaolin, 3 ~ 5 parts of sulphur, promote
Into agent CZ0.5 ~ 2.5 part, 15 ~ 25 parts of chlorinated paraffin, 1 ~ 4 part of antioxidant NBC, 5 ~ 15 parts of epobond epoxyn and silane are even
Agent 1-3 parts of connection.
2. flame-proof armored rope core conveyer belt core rubber according to claim 1, which is characterized in that the fire retardant is ultra-fine hydrogen
Aluminium oxide, the mixing of magnesium hydroxide equimolar amounts.
3. flame-proof armored rope core conveyer belt core rubber according to claim 1, which is characterized in that the modified kaolin is height
Ridge soil is after 1500 DEG C of high-temperature process obtained by mullitization.
4. flame-proof armored rope core conveyer belt core rubber according to claim 1, which is characterized in that the poly- poly- fluorine second of fluorosilicone-
The synthesis of alkene block copolymer, includes the following steps:
1) synthesis of poly- fluorosilicone: the air in three-necked flask being replaced with nitrogen and is discharged, is added the 1 of 80.0g, and 3,5- tri-
(trifluoro propyl methyl) cyclotrisiloxane, 2mL trifluoromethane sulfonic acid, 10mL deionized water, warming while stirring is to 60 DEG C, at the uniform velocity
Hexamethyl cyclotetrasiloxane is added dropwise, adjusts pH=8.5 after reacting 2h, accesses distilling apparatus and is warming up to 80 DEG C;It will be distilled after 6h
To intermediate product pour into -70 DEG C of storage over night in cold hydrazine rapidly;Intermediate product in cold hydrazine was poured into flask in second day, side
The hexamethyl cyclotetrasiloxane of volume ratio 1: 3 and the mixed liquor of isopropanol butyl ether is added dropwise, to 40 DEG C, side is added micro- for side temperature programming
The stannous chloride of amount reacts after 6h up to poly- fluorosilicone;
2) preparation of polyvinyl fluoride: vinyl fluoride and a certain amount of polyvinyl alcohol are fitted into 250mL three-necked flask, and deionization is added
1h is vibrated after water to uniform;It is put into the water bath of 65 DEG C of preparatory constant temperature later, K is added dropwise2S2O8Solution, rate of addition 0.2mL/
Min, until reaction terminates;Products therefrom is first washed with dilute sulfuric acid, then is washed with propylene glycol, thickener is added and adjusts solution system
Viscosity is to get the polyvinyl fluoride solution needed for this experiment;
3) poly- fluorosilicone-polyvinyl fluoride block copolymer preparation: with syringe pump respectively by poly- fluorosilicone and boron trifluoride
It injects in flask, a small amount of n-hexane is added, vacuum distillation removes the lesser poly- fluorosilicone of molal weight at 30 DEG C;Add simultaneously
Enter propylene oxide ether and polyvinyl fluoride, be brought rapidly up to 120 DEG C, liquid nitrogen quenching reaction is utilized after reacting 8h, by solution at 0 DEG C
It precipitates, filter in ether, end-capping reagent-hydroxy silicon oil is added and terminates polymerization reaction, with ether, deionized water washing impurity-removing, separation
It is dried in vacuo after organic phase out up to poly- fluorosilicone-polyvinyl fluoride block copolymer.
5. a kind of preparation method of any one of -4 flame-proof armored rope core conveyer belt core rubbers according to claim 1, feature exist
In including the following steps:
(1) by the neoprene of above-mentioned parts by weight, organic silicon rubber, poly- fluorosilicone-polyvinyl fluoride block copolymer, poly- silicon boron
It plasticates in oxygen alkane investment open mill, the sizing material plasticated is spare;
(2) will the sizing material that plasticated put into mixer in, sequentially add reinforcing agent coumarone resin, filler modified kaolin,
Fire retardant, chlorinated paraffin, antioxidant NBC, epobond epoxyn and silane coupling agent, sulphur and accelerant CZ are after mixing evenly
Obtain rubber compound;
(3) sizing material being kneaded the film of respective thickness is squeezed out by open mill to convey to get to fire-retardant combustion Steel cord
Band core rubber.
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CN113956821A (en) * | 2021-11-11 | 2022-01-21 | 哥俩好新材料股份有限公司 | Flame-retardant conveyor belt repairing adhesive and preparation method and use method thereof |
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CN113956821B (en) * | 2021-11-11 | 2023-09-12 | 哥俩好新材料股份有限公司 | Flame-retardant conveyer belt repair adhesive and preparation method and use method thereof |
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