CN103468172B - High-temperature-resistance adhesive layer rubber material for polyester canvas conveying belt and preparation method of high-temperature-resistance adhesive layer rubber material - Google Patents
High-temperature-resistance adhesive layer rubber material for polyester canvas conveying belt and preparation method of high-temperature-resistance adhesive layer rubber material Download PDFInfo
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Abstract
The invention relates to a high-temperature-resistance adhesive layer rubber material for a polyester canvas conveying belt and a preparation method of the high-temperature-resistance adhesive layer rubber material. According to the preparation method, ethylene-propylene-diene monomer rubber and natural rubber are adopted as matrixes, and the natural rubber and the ethylene-propylene-diene monomer rubber of the adhesive layer rubber are in different phase structure under a microscopic scope by controlling the viscosity ratio of two rubbers and adding proper auxiliaries, so that the adhesive performance of the rubbers and a canvas layer can be improved, the thermal ageing resistance of the adhesive layer rubber can be improved, and the service life of a heat-resistance conveying belt can be further prolonged.
Description
Technical field:
The present invention relates to a kind of polyester canvas apron high temperature resistant bonding coat elastomeric material and preparation method thereof.
Background technology:
High temperature resistance polyester canvas apron is bonded together after high temperature vulcanized by adhesive rubber and the heat-resisting rubber cover of upper and lower surface by multi-layered polyester canvas, be widely used in the industry of iron and steel, cement and coke high-temperature operation, require heat resistance conveyor belt to have high temperature resistant, resistance toly to burn, the characteristic such as long lifetime.In order to promote performance and the work-ing life of heat resistance conveyor belt, conveying belt industry is generally heat resistance conveyor belt rubber cover material of main part with terpolymer EP rubber, bonding coat rubber adopt 2-3 kind in natural rubber, styrene-butadiene rubber(SBR) and cis-1,4-polybutadiene rubber and system.But terpolymer EP rubber self-adhesion and mutual viscosity are all very poor, cannot directly and bonding coat rubber fit.
For this problem, in current heat resistance conveyor belt product, the measure improving the performance between tectum and bonding coat has two kinds: one to be between adhesive glue and rubber cover, use transition layer rubberizing; Two is modified EPT rubber, promotes its bond properties.Gao Xiuling describes terpolymer EP rubber and natural rubber paralled system as transition layer rubber in [Chinese rubber, 2009,6(25): 35-37], can extend conveying belt work-ing life.Adopt dichloro carbyne and terpolymer EP rubber double bond to react during Wang De aims at [world rubber industry, 2001,28(2)] and obtained the terpolymer EP rubber of modification, its bond properties and being all significantly increased with the covulcanization performance of high unsaturated rubber.
Above measure can improve the bonding coat rubber performance of high temperature-resistance conveyor belt, but the cost of modified EPT rubber is higher; And the main body of heat resistance conveyor belt adhesive glue is natural rubber, run under being in hot environment for a long time, the natural rubber in adhesive glue is aging gradually, bond properties reduce, cause heat resistance conveyor belt in use with the delamination of polyester canvas, impact use.
Summary of the invention:
The present invention relates to a kind of high temperature resistance polyester canvas apron bonding coat elastomeric material and preparation method thereof, adopt terpolymer EP rubber, natural rubber as matrix, by controlling the viscosity ratio of two kinds of rubber, add suitable adjuvants, bonding coat rubber natural gum and terpolymer EP rubber under microcosmic is made to be different Phase stracture, improve the bond properties of rubber and canvas layer, improve the heat aging property of bonding coat rubber simultaneously, improve the work-ing life of heat resistance conveyor belt further.
The high temperature resistant bonding coat elastomeric material of a kind of polyester canvas apron of the present invention, the mass fraction of its essentially consist and each component is:
Component A 20 ~ 90 parts;
B component 10 ~ 80 parts;
Metal oxide 10 ~ 30 parts;
Stearic acid 1 ~ 5 part;
Zinc methacrylate 2 ~ 8 parts;
1 ~ 10 part, anti-aging agent;
Strengthening agent 10 ~ 80 parts;
2 ~ 10 parts, tackiness agent;
Promotor 1 ~ 5 part.
Component A is add the terpolymer EP rubber rubber master batch of monomerics and peroxide cross-linking agent, and wherein, terpolymer EP rubber, monomerics and dicumyl peroxide (DCP) mass ratio are 100:(5 ~ 60): (4 ~ 6).
B component is add the natural rubber rubber master batch of sulfur cross-linking agent, and natural rubber and sulphur mass ratio are 100:(1 ~ 4).
The present invention adopts terpolymer EP rubber, natural rubber be used as the base rubber of bonding coat elastomeric material, and use low-molecular-weight softening agent to reduce the mooney viscosity of terpolymer EP rubber, mooney viscosity can be made to be down to 14 ~ 42(ML1+4100 DEG C), be conducive to the dispersion of terpolymer EP rubber in binding system.Relative to traditional natural rubber and styrene-butadiene rubber(SBR) and bonding coat rubbery system, in the binding system that terpolymer EP rubber, natural rubber, monomerics are blended, before two kinds of blend rubbers, prepare two kinds of rubber master batch of different viscosity, the difference of viscosity can control the Phase stracture after two kinds of blend rubbers.Natural rubber in binding system can ensure the bond properties of bonding coat rubber and polyester canvas, solve the problem of terpolymer EP rubber autohension and mutual viscosity difference, and the terpolymer EP rubber of low mooney viscosity easily forms continuous Phase stracture in system, the ageing-resistant performance of bonding coat elastomeric material can be significantly improved.
The preferred mooney viscosity of terpolymer EP rubber in described bonding coat rubber is at 20 ~ 100(ML1+4100 DEG C) between ENB type terpolymer EP rubber, Third monomer ethylidene norbornene (ENB) mass content is 6% ~ 10%, there is comparatively faster vulcanization rate, can better and natural rubber covulcanization.
Described softening agent belongs to rubber monomerics, the polyisobutene of preferred number average molecular weight 500 ~ 10000, polyhutadiene or dimethyl allene glycol ester (EGDMA).Terpolymer EP rubber and natural rubber blended before, first blended with terpolymer EP rubber, reduce the viscosity of terpolymer EP rubber, not only can improve the processing characteristics of terpolymer EP rubber, improve the autohension of terpolymer EP rubber, and be conducive to terpolymer EP rubber and natural rubber blended time dispersion.
Described anti-aging agent is mass ratio 1:(1.5 ~ 3.5) 2-mercaptobenzimidazole (MB) and 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer (RD), or the preferred N-4(aniiinophenyl of reactive antioxidant) maleimide (MC) or N-4(aniiinophenyl) Methacrylamide (NAPM), in sulfidation, anti-aging agent can react and grafting with rubber macromolecule under the effect of peroxide vulcanizing agent, not easily move during applied at elevated temperature, play better protective effect, so improve adhesive rubber aging after performance.
The metal oxide that the present invention adopts is the mixture of any one in following material or any two kinds: nano zine oxide, nano magnesia, nano oxidized every or nano calcium oxide, its particle size range is 10 ~ 100nm.Be preferably the mixture of nano zine oxide, nano magnesia or nano zine oxide and nano magnesia, the add-on of nano-metal-oxide is preferably 5 ~ 20 mass parts.Add metal oxide and not only play activation, and wherein nano zine oxide and nano magnesia in material of the present invention with other component compatibilities, play resistant to elevated temperatures effect, and nano-scale oxide specific surface area is large, activity is larger, be conducive to absorbing the acidic substance of releasing in ageing of rubber process, there is obvious protective effect.
The mixture that the present invention's strengthening agent used is carbon black and white carbon black; The mass ratio of carbon black and white carbon black is preferably (1 ~ 8): 1; Carbon black preferably from fine particle carbon black N550, N330, N220 or N115, has good reinforced effects, ensures that bonding coat rubber has excellent mechanical property.White carbon black is preferably thermal silica, not only gives rubber excellent mechanical property, and can significantly improve the bond properties of rubber and filamentary material.
The present invention's tackiness agent used is mass ratio is 1:(0.5 ~ 2.5) methylene radical give the mixture of build tackiness agent and methylene receptor type tackiness agent.One in methylene radical donor preferred adhesive A, RA, H30, the one in methylene receptor preferred adhesive RS, RE, RK.
Promotor is 2-thiol benzothiazole (M), 2-diphenyl disulfide also azoles (DM) or iso-cyanuric acid triallyl ester (TAIC).Preferred mass is than the 2-thiol benzothiazole (M) and the 2-diphenyl disulfide also azoles (DM) that are 1:1.Promotor both significantly can improve cross-linking properties as auxiliary vulcanizing agent, can also be used as scorch retarder and tackifier, extended time of scorch, improved complete processing, improved the bond properties of rubber and filamentary material.
The polyester canvas apron provided by the invention preparation method of high temperature resistant bonding coat elastomeric material:
(1) preparation of component A terpolymer EP rubber rubber master batch: by terpolymer EP rubber, carry out blended in proportion with monomerics, add dicumyl peroxide again, terpolymer EP rubber rubber master batch is obtained after mixing, melting temperature 30 ~ 50 DEG C is controlled, mixing time 15 ~ 20min in mixing process; After mixing, the mooney viscosity of rubber master batch is 14 ~ 42.
(2) preparation of B component natural rubber rubber master batch: by natural rubber thin-pass on a mill until; Carry out blended in proportion with sulphur afterwards, obtain natural rubber rubber master batch, the temperature 30 ~ 50 DEG C of roller when controlling blended, blended time 5 ~ 15min; The mooney viscosity of blended rear rubber master batch is 25 ~ 60.
(3) component A step (1) and (2) obtained and B component are carried out blended in proportion, add anti-aging agent, strengthening agent, metal oxide, stearic acid, zinc methacrylate, tackiness agent and promotor in proportion again, mixing in mill or Banbury mixer, obtain the high temperature resistant bonding coat rubber unvulcanizate of polyester canvas apron, control melting temperature 45 ~ 70 DEG C, mixing time 20 ~ 30min.
Adhesive coating rubber material for high temperature resistant canvas conveyer of the present invention in use, bonding coat rubber unvulcanizate and polyester canvas are completed at normal temperatures the laminating of bonding coat glue and canvas layer through two roller or four-roll calender, through shaping calendering, on vulcanizing press, 150 DEG C ~ 180 DEG C sulfurations obtain high temperature resistance polyester canvas apron with rubber cover (being preferably Ethylene Propylene Terpolymer base rubber) again.
Effect of the present invention: high temperature resistance polyester of the present invention bonding coat elastomeric material used for conveyer belt, adopt low viscosity terpolymer EP rubber rubber master batch and natural rubber rubber master batch blended.Compared with traditional bonding coat method for preparing rubber, the present invention is before two kinds of blend rubbers, first carry out the regulation and control of mooney viscosity, carry out the blended of rubber more afterwards and use, the Phase stracture of two kinds of rubber in blend compounds can be controlled, because in a two-phase system, the component of low mooney viscosity easily forms external phase, the component of high Mooney viscosity easily forms disperse phase, and the performance of external phase to paralled system plays an important role, macroscopically maintain the performance of external phase component, disperse phase then can improve the performance of co-mixing system and promote.The terpolymer EP rubber rubber master batch of low mooney viscosity in the present invention, external phase structure is formed in paralled system, utilize the heat-resisting ageing-resisting performance of terpolymer EP rubber excellence, effectively can promote the ageing-resistant performance of bonding coat rubber, and as the natural rubber components of disperse phase, then can improve the bond properties of bonding coat rubber, make up the problem of the poor adhesion of terpolymer EP rubber, and preventing aging system, the synergy of tackifying system, bonding coat elastomeric material is made to have better heat aging property and bond properties, thus improve the ageing-resistant performance that conveying belt bonding coat rubber uses in high temperature environments.And the simple blend method of traditional two kinds of rubber, be directly by the natural rubber of plasticating and terpolymer EP rubber blended, the dispersed texture of uncontrollable two kinds of rubber, combined effect is not obvious.
The present invention adopts GB6759-86 to measure conveying belt adhesive glue and layer of cloth bond strength.Tension testing machine causes by " one deck method " (A method) with certain speed the stripping of certain length between sample bonding coat, utilizes self registering peel force curve to calculate bond strength.Elevated temperature tension test machine records with above-mentioned A method the bond strength under high temperature.Bonding coat rubber prepared by the present invention, bond strength is above standard GBT20021-2005_9: the bond strength of cloth and cloth under normal temperature: longitudinal test piece mean value >=4.5N/mm; The bond strength of (150 DEG C) cloth and cloth under high temperature: longitudinal test piece mean value >=2.1N/mm.
The aging bond properties of the present invention, according to the test of rubber cover hot oxygen air aging performance, adopts standard GB3512-83 to perform, aging temperature 150 DEG C, digestion time 48 hours.
Below in conjunction with embodiment, the present invention will be further described:
Embodiment:
Described in following examples and comparative example, starting material are commercial, and raw material dosage is by mass parts.
Embodiment 1:
In two rod mill, (mass parts is referred to by 70 parts, lower with) add linking agent dicumyl peroxide (DCP) 4 parts after terpolymer EP rubber (commercially available EPDM4045) is mixing with 30 parts of polyisobutene (number-average molecular weight 1300), control melting temperature 40 DEG C, mixing time 15min, mooney viscosity is 14, obtains terpolymer EP rubber rubber master batch;
First plasticated by 100 parts of natural rubbers, controlling mill roller temperature is 40 DEG C, adds linking agent: 2.5 parts, sulphur after plasticating, and controls mixing time 6min, makes its mooney viscosity 60, obtain natural rubber rubber master batch;
Get terpolymer EP rubber rubber master batch 80 parts respectively, natural gum rubber master batch 20 parts, two kinds of rubber master batch are carried out mixing after, add activator respectively: nano zine oxide (10 ~ 100nm) 8 parts, stearic acid 1 part, zinc methacrylate 3 parts; Anti-aging agent: 2-mercaptobenzimidazole (MB) 2 parts, 2,2,4-trimethylammonium-1,2-dihyaroquinoline (RD) 2 parts; Carbon black N33030 part, white carbon black (A-400) 10 parts, adhesive RS 2 parts, resin B N-12 part; Finally add tackiness agent RA3 part, captax 1 part, altax 1 part, control mill roller temperature at 50 DEG C, mix on a mill until, then regulate mill roll spacing to 1mm, roller temperature 50 DEG C, thin-pass plays triangle bag more than 10 times, and last slice obtains rubber unvulcanizate.
Rubber unvulcanizate and polyester canvas layer complete the laminating of adhesive glue and layer of cloth at normal temperatures through four-roll calender, then with Ethylene Propylene Terpolymer rubber cover after shaping calendering on vulcanizing press 152 DEG C of sulfurations obtain conveying belt, its aging front and back bond strength is in table 1.
Embodiment 2:
In two rod mill, linking agent dicumyl peroxide (DCP) 4 parts is added after mixing to 70 parts of terpolymer EP rubbers (commercially available EPDM4045) and 30 parts of dimethyl allene glycol esters (EGDMA), control melting temperature 40 DEG C, mixing time 15min, control mooney viscosity 14, obtain terpolymer EP rubber rubber master batch;
First plasticated by 100 parts of natural rubbers, controlling mill roller temperature is 40 DEG C, adds linking agent: 2.5 parts, sulphur after plasticating, and controls mixing time 6min, makes its mooney viscosity 60, obtain natural rubber rubber master batch;
Get terpolymer EP rubber rubber master batch 80 parts respectively, natural gum rubber master batch 20 parts, two kinds of rubber master batch are carried out mixing after, add activator respectively: nano zine oxide (10 ~ 100nm) 8 parts, stearic acid 1 part, zinc methacrylate 3 parts; Anti-aging agent: 2-mercaptobenzimidazole (MB) 2 parts, 2,2,4-trimethylammonium-1,2-dihyaroquinoline (RD) 2 parts; Carbon black N33030 part, white carbon black (A-400) 10 parts, adhesive RS 2 parts, resin B N-12 part; Finally add tackiness agent RA3 part, captax 1 part, altax 1 part, control mill roller temperature at 50 DEG C, mix on a mill until, then regulate mill roll spacing to 1mm, roller temperature 50 DEG C, thin-pass plays triangle bag more than 10 times, and last slice obtains rubber unvulcanizate.
Rubber unvulcanizate and polyester canvas layer complete the laminating of adhesive glue and layer of cloth at normal temperatures through four-roll calender, then with Ethylene Propylene Terpolymer rubber cover after shaping calendering on vulcanizing press 152 DEG C of sulfurations obtain conveying belt, its aging front and back bond strength is in table 1.
Embodiment 3:
In two rod mill, linking agent dicumyl peroxide (DCP) 4 parts is added after mixing to 70 parts of terpolymer EP rubbers (commercially available EPDM4045) and 30 parts of polyisobutene (number-average molecular weight 1300), control melting temperature 40 DEG C, mixing time 15min, control mooney viscosity 14, obtain terpolymer EP rubber rubber master batch;
First plasticated by 100 parts of natural rubbers, controlling mill roller temperature is 40 DEG C, adds linking agent: 2.5 parts, sulphur after plasticating, and controls mixing time 6min, makes its mooney viscosity 60, obtain natural rubber rubber master batch;
Get terpolymer EP rubber rubber master batch 20 parts respectively, natural gum rubber master batch 80 parts, two kinds of rubber master batch are carried out mixing after, add activator respectively: nano zine oxide (10 ~ 100nm) 8 parts, stearic acid 1 part, zinc methacrylate 3 parts; Anti-aging agent: 2-mercaptobenzimidazole (MB) 2 parts, 2,2,4-trimethylammonium-1,2-dihyaroquinoline (RD) 2 parts; Carbon black N33030 part, white carbon black (A-400) 10 parts, adhesive RS 2 parts, resin B N-12 part; Finally add tackiness agent RA3 part, captax 1 part, altax 1 part, control mill roller temperature at 50 DEG C, mix on a mill until, then regulate mill roll spacing to 1mm, roller temperature 50 DEG C, thin-pass plays triangle bag more than 10 times, and last slice obtains rubber unvulcanizate.
Rubber unvulcanizate and polyester canvas layer complete the laminating of adhesive glue and layer of cloth at normal temperatures through four-roll calender, then with Ethylene Propylene Terpolymer rubber cover after shaping calendering on vulcanizing press 152 DEG C of sulfurations obtain conveying belt, its aging front and back bond strength is in table 1.
Comparative example 1:
In two rod mill, carry out mixing after being plasticated by 20 parts of natural rubbers together with 80 parts of terpolymer EP rubbers, controlling mill roller temperature is 40 DEG C, adds activator respectively: nano zine oxide (10 ~ 100nm) 8 parts, stearic acid 1 part, zinc methacrylate 3 parts; Anti-aging agent: 2-mercaptobenzimidazole (MB) 2 parts, 2,2,4-trimethylammonium-1,2-dihyaroquinoline (RD) 2 parts; Carbon black N33030 part, white carbon black (A-400) 10 parts, adhesive RS 2 parts, resin B N-12 part; Finally add 0.5 part, sulphur, dicumyl peroxide (DCP) 3.2 parts, tackiness agent RA3 part, captax 1 part, altax 1 part, control mill roller temperature at 50 DEG C, mix on a mill until, then regulate mill roll spacing to 1mm, roller temperature 50 DEG C, thin-pass plays triangle bag more than 10 times, and last slice obtains rubber unvulcanizate.
Rubber unvulcanizate and polyester canvas layer complete the laminating of adhesive glue and layer of cloth at normal temperatures through four-roll calender, then with Ethylene Propylene Terpolymer rubber cover after shaping calendering on vulcanizing press 152 DEG C of sulfurations obtain conveying belt, its aging front and back bond strength is in table 1.
Comparative example 2:
In two rod mill, carry out mixing after being plasticated by 80 parts of natural rubbers together with 20 parts of terpolymer EP rubbers, controlling mill roller temperature is 40 DEG C, adds activator respectively: nano zine oxide (10 ~ 100nm) 8 parts, stearic acid 1 part, zinc methacrylate 3 parts; Anti-aging agent: 2-mercaptobenzimidazole (MB) 2 parts, 2,2,4-trimethylammonium-1,2-dihyaroquinoline (RD) 2 parts; Carbon black N33030 part, white carbon black (A-400) 10 parts, adhesive RS 2 parts, resin B N-12 part; Finally add 2 parts, sulphur, dicumyl peroxide (DCP) 0.8 part, tackiness agent RA3 part, captax 1 part, altax 1 part, control mill roller temperature between 50 DEG C, mix on a mill until, then regulate mill roll spacing to 1mm, roller temperature 50 DEG C, thin-pass plays triangle bag more than 10 times, and last slice obtains rubber unvulcanizate.
Rubber unvulcanizate and polyester canvas layer complete the laminating of adhesive glue and layer of cloth at normal temperatures through four-roll calender, then with Ethylene Propylene Terpolymer rubber cover after shaping calendering on vulcanizing press 152 DEG C of sulfurations obtain conveying belt, its aging front and back bond strength is in table 1.
Table 1: the Performance comparision of the embodiment of the present invention and comparative example
In the bond strength surveyed in upper table, layer of cloth is polyester canvas, rubber cover thickness G reatT.GreaT.GT2mm.Canvas core heat resistance conveyor belt standard GBT20021-2005_9: the bond strength of cloth and cloth under normal temperature: longitudinal test piece mean value >=4.5N/mm; The bond strength of cloth and cloth under high temperature: longitudinal test piece mean value >=2.1N/mm.
Table 1 data presentation: embodiment 1 is with comparative example 1, the ratio of terpolymer EP rubber and natural rubber is 80/20, in embodiment 1, after the terpolymer EP rubber interpolation softening agent polyisobutene of component A, viscosity is very low, and the viscosity of B component is higher, the viscosity ratio of B component and component A is 4.3, when bonding with mylar, system has better mobility, improve the perviousness between bonding coat rubber and mylar, improve bonding coat rubber bond strength at normal temperatures, simultaneously, low viscosity terpolymer EP rubber rubber master batch is continuous phase in system, bond strength after binding system is aging also obviously promotes, 5.3N/mm is increased to by 3.5N/mm, performance boost 51%, property retention rate after aging is improved (60%).In embodiment 2, after the softening agent of terpolymer EP rubber changes dimethyl allene glycol ester into by polyisobutene, the bond properties before aging than the height of embodiment 1, but aging after bond properties decrease, the property retention rate after aging reduces (46%).In embodiment 3 with comparative example 2, the ratio of terpolymer EP rubber and natural rubber is 20/80, because the bond properties between natural rubber and mylar is excellent, bond properties is at normal temperatures all higher, but in embodiment 2, because the viscosity of terpolymer EP rubber is low, even if a small amount of terpolymer EP rubber also can be continuous phase in binding system, can significantly promote aging after bond properties, bond strength after aging is increased to 6.6N/mm by 3.7N/mm, performance boost 78%, bond strength conservation rate after aging is increased to 53% by 34%, performance boost is obvious.In above three embodiments, low viscous terpolymer EP rubber not only makes bonding coat rubber have the perviousness that better flows, with the bond properties of mylar under lifting normal temperature, simultaneously, low viscous terpolymer EP rubber component, has obvious lifting in the structure of external phase to aging rear bond properties in binding system.
Claims (9)
1. the high temperature resistant bonding coat elastomeric material of polyester canvas apron, the mass fraction of its essentially consist and each component is:
Component A 20 ~ 90 parts;
B component 10 ~ 80 parts;
Metal oxide 10 ~ 30 parts;
Stearic acid 1 ~ 5 part;
Zinc methacrylate 2 ~ 8 parts;
1 ~ 10 part, anti-aging agent;
Strengthening agent 10 ~ 80 parts;
2 ~ 10 parts, tackiness agent;
Promotor 1 ~ 5 part;
Component A is add the terpolymer EP rubber rubber master batch of monomerics and peroxide cross-linking agent, and wherein, terpolymer EP rubber, monomerics and dicumyl peroxide mass ratio are 100:(5 ~ 60): (4 ~ 6);
B component is add the natural rubber rubber master batch of sulfur cross-linking agent, and natural rubber and sulphur mass ratio are 100:(1 ~ 4);
It is characterized in that the high temperature resistant bonding coat elastomeric material of polyester canvas apron is adopted to prepare with the following method:
(1) preparation of component A terpolymer EP rubber rubber master batch: by terpolymer EP rubber, carry out blended in proportion with monomerics, add dicumyl peroxide again, terpolymer EP rubber rubber master batch is obtained after mixing, melting temperature 30 ~ 50 DEG C is controlled, mixing time 15 ~ 20min in mixing process;
(2) preparation of B component natural rubber rubber master batch: by natural rubber thin-pass on a mill until; Carry out blended in proportion with sulphur afterwards, obtain natural rubber rubber master batch, the temperature 30 ~ 50 DEG C of roller when controlling blended, blended time 5 ~ 15min;
(3) component A step (1) and (2) obtained and B component are carried out blended in proportion, add anti-aging agent, strengthening agent, metal oxide, stearic acid, zinc methacrylate, tackiness agent and promotor in proportion again, mixing in mill or Banbury mixer, obtain the high temperature resistant bonding coat rubber unvulcanizate of polyester canvas apron, control melting temperature 45 ~ 70 DEG C, mixing time 20 ~ 30min.
2. the high temperature resistant bonding coat elastomeric material of polyester canvas apron according to claim 1, is characterized in that: described monomerics is the polyisobutene of number-average molecular weight 500 ~ 10000, polyhutadiene or dimethyl allene glycol ester.
3. the high temperature resistant bonding coat elastomeric material of polyester canvas apron according to claim 1, it is characterized in that: described terpolymer EP rubber is the ENB type terpolymer EP rubber of mooney viscosity between 20 ~ 100, and Third monomer ethylidene norbornene mass content is 6% ~ 10%.
4. the high temperature resistant bonding coat elastomeric material of polyester canvas apron according to claim 1, it is characterized in that: described metal oxide is the mixture of any one in following material or two kinds: nano zine oxide, nano magnesia, nano oxidized every or nano calcium oxide, the particle size range of metal oxide is 10 ~ 100nm.
5. the high temperature resistant bonding coat elastomeric material of polyester canvas apron according to claim 1, it is characterized in that: anti-aging agent is mass ratio 1:(1.5 ~ 3.5) 2-mercaptobenzimidazole and 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer or N-4 (aniiinophenyl) maleimide or N-4 (aniiinophenyl) Methacrylamide.
6. the high temperature resistant bonding coat elastomeric material of polyester canvas apron according to claim 1, is characterized in that: tackiness agent is mass ratio is (1.5 ~ 2.5): the methylene radical of (2.5 ~ 3.8) gives the mixture of build tackiness agent and methylene receptor type tackiness agent.
7. the high temperature resistant bonding coat elastomeric material of the polyester canvas apron according to claim 1 or 4, is characterized in that: the mixture of the nano zine oxide of described metal oxide to be particle size range be 10 ~ 100nm, nano magnesia or nano zine oxide and nano magnesia.
8. the high temperature resistant bonding coat elastomeric material of polyester canvas apron according to claim 1, is characterized in that: the mixture that strengthening agent is carbon black and white carbon black.
9. the polyester canvas apron preparation method of high temperature resistant bonding coat elastomeric material described in a claim 1:
(1) preparation of component A terpolymer EP rubber rubber master batch: by terpolymer EP rubber, carry out blended in proportion with monomerics, add dicumyl peroxide again, terpolymer EP rubber rubber master batch is obtained after mixing, melting temperature 30 ~ 50 DEG C is controlled, mixing time 15 ~ 20min in mixing process;
(2) preparation of B component natural rubber rubber master batch: by natural rubber thin-pass on a mill until; Carry out blended in proportion with sulphur afterwards, obtain natural rubber rubber master batch, the temperature 30 ~ 50 DEG C of roller when controlling blended, blended time 5 ~ 15min;
(3) component A step (1) and (2) obtained and B component are carried out blended in proportion, add anti-aging agent, strengthening agent, metal oxide, stearic acid, zinc methacrylate, tackiness agent and promotor in proportion again, mixing in mill or Banbury mixer, obtain the high temperature resistant bonding coat rubber unvulcanizate of polyester canvas apron, control melting temperature 45 ~ 70 DEG C, mixing time 20 ~ 30min.
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| CN106032408B (en) * | 2015-03-17 | 2018-08-17 | 中国石油化工股份有限公司 | Antioxidant composition and EP rubbers and preparation method thereof |
| CN106010370A (en) * | 2016-07-06 | 2016-10-12 | 无锡宝通科技股份有限公司 | Canvas core thermal insulation conveying belt adhesive layer rubber material and preparation method thereof |
| CN106084499A (en) * | 2016-07-25 | 2016-11-09 | 崔贵民 | The endless belt rubberizing of thermal resistance and acid-alkali resistance paper tube, preparation method and paper tube endless belt |
| CN108659744B (en) * | 2018-06-04 | 2021-02-02 | 南京利德东方橡塑科技有限公司 | Environment-friendly EPDM adhesive for improving adhesion between ethylene propylene diene monomer and cord thread |
| CN110878161B (en) * | 2018-09-06 | 2022-08-12 | 中国石油化工股份有限公司 | High-temperature-resistant energy-saving adhesive layer rubber for conveyer belt |
| CN112080077A (en) * | 2020-07-09 | 2020-12-15 | 马洪亮 | High-strength heat-resistant conveying belt and preparation process thereof |
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