CN104312018A - Cover compound for heat-resistant conveyor belt - Google Patents
Cover compound for heat-resistant conveyor belt Download PDFInfo
- Publication number
- CN104312018A CN104312018A CN201410635132.1A CN201410635132A CN104312018A CN 104312018 A CN104312018 A CN 104312018A CN 201410635132 A CN201410635132 A CN 201410635132A CN 104312018 A CN104312018 A CN 104312018A
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- Prior art keywords
- conveyor belt
- heat resistance
- heat
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- mass fraction
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Belt Conveyors (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a cover compound for a heat-resistant conveyor belt. The cover compound mainly comprises the components of ethylene-propylene methylene copolymer, low-Mooney EPDM, high-abrasion-resistant carbon black, zinc methacrylate, white carbon black, paraffin wax, an adhesion promoter, resorcinol, an anti-aging agent and the like. The heat-resistant conveyor belt can be endowed with better material performance: the hardness (Shore A type) is 55-65 degrees, the tensile strength is greater than 15 MPa, elongation at rupture is 450-600 percent and bonding strength is greater than 2.1 N/mm between the cover compound and a skeleton layer at 175 DEG C; compared with a conventional formula, the cover compound has the advantages that the performance and the heat resistance are greatly improved, and stable process performance is achieved, so that the requirements of the T4 type heat-resistant conveyor belt can be better met.
Description
Technical field
The present invention relates to conveying belt technical field, particularly relate to a kind of heat resistance conveyor belt rubber cover.
Background technology
Heat resistance conveyor belt is covered with high temperature resistant or heat resistant rubber up and down by multilayer rubber cotton duck (polyester-mixed cotton cloth) or polyester canvas, is bonded together through high temperature vulcanized, is applicable to conveying less than 175 DEG C hot cokes, cement, slag and hot-cast part etc.Specifically,
1, the same duck conveyor belt of specification.
2, product performs HG2297-92 standard.
3, heat resistance conveyor belt can be divided into four kinds of models:
I type: resistance toly can be not more than 100 DEG C of test temperatures, the highest operating temperature in short-term 150 DEG C, code name T1.
II type: resistance toly can be not more than 125 DEG C of test temperatures, the highest operating temperature in short-term 170 DEG C, code name T2.
III type: resistance toly can be not more than 150 DEG C of test temperatures, the highest operating temperature in short-term 200 DEG C, code name T3.
IV type: resistance toly can be not more than 175 DEG C of test temperatures, the highest operating temperature in short-term 250 DEG C, code name T4.
The rubber cover of T4 type heat resistance conveyor belt works in hot environment, and operating ambient temperature is usually at about 175 DEG C, and also will have good physicals in such circumstances, bond strength is greater than 2.1N/mm.These require to be traditional is at present that main heat resistance conveyor belt is all unappeasable with NR, SBR, and they are under the environment of high temperature 175 DEG C, and performance declines rapidly, surface hardening, and elasticity is deteriorated, and the life-span is generally only 1 month; The resistance toheat of ethylene-propylene rubber(EPR) is very good, it is the desirable elastomer material of heat resistance conveyor belt, but not containing polar group in ethylene-propylene rubber(EPR) molecular chain, make its autohension and mutual viscosity poor, therefore, its bond properties becomes the limiting factor of heat resistance conveyor belt, and namely the bond properties of ethylene-propylene rubber(EPR) still awaits further raising, and this has become in conveying belt industry the technical problem being badly in need of solving.
Summary of the invention
The object of the invention is the technological deficiency for existing in prior art, and provide that a kind of thermotolerance and binding property are better, the heat resistance conveyor belt rubber cover of longer service life, it can be applied to the materials such as transporting hot coke, cement, slag and hot-cast part.
The technical scheme adopted for realizing object of the present invention is: a kind of heat resistance conveyor belt rubber cover, is characterized in that, component and mass fraction as follows:
Wherein, the mass fraction sum of described ethylene propylene rubber and described low Mooney terpolymer EP rubber is 100 parts.
Proportioning principle of the present invention is:
(1) major ingredient ethylene propylene rubber of the present invention, its molecular structure is completely saturated, thermotolerance is better, but the manufacturability of ethylene propylene rubber is poorer than the manufacturability of terpolymer EP rubber in mixing process, so select the terpolymer EP rubber of ethylene propylene rubber and low Mooney and use, namely based on ethylene propylene rubber, be auxiliary with the terpolymer EP rubber of low Mooney, not only ensure good thermotolerance but also have good process industrial art performance;
(2) because ethylene-propylene rubber(EPR) is the reinforcing rubber of non-self, need to add suitable strengthening agent in therefore in heat resistance conveyor belt rubber cover.The strengthening agent that the present invention adds in component is preferably high wear-resistant carbon black, and high wear-resistant carbon black has the advantages that particle diameter is little, structure is high, can bring good tensile strength and wear resistance;
(3) due to the autohension of ethylene-propylene rubber(EPR) itself and mutual viscosity poor, adhesionpromoter AIR-1 is with the addition of in the present invention, its effect is: 1. in the downwind scheme operation of calendering process, increases its banding characteristics on a mill until, is conducive to the production operation in each operation of downwind scheme; 2. produce in calender line at conveying belt, the banding characteristics of sizing material can be increased, shorten soak time, be conducive to work in-process sizing material rolling out film on rolling press or mill; 3., in conveying belt forming technique, the assembly between work in-process film and rubber cord is increased; 4. increase bond strength in various degree.
(4) for ensureing excellent resistance to elevated temperatures, adopt peroxide vulcanizing system in the present invention, generate-C-C-key in its sulfidation, carbon-carbon bond bond energy is high, and heat, chemical stability are high.There is excellent thermal oxidation resistance performance, without reversion phenomenon.The compression set of cross-linked rubber is good.In conjunction with environmental protection in the present invention, select dual-tert-butyl dicumyl peroxide, it can not produce peculiar smell in sulfidation;
(5) adding due to zinc methacrylate, it can be used as the linking agent of peroxide cure rubber on the one hand, improves cross-linking efficiency, increases cross-linking density, improve physicals and the heat aging property of rubber; On the other hand, zinc methacrylate and silica-hexa-resorcinol binding system use, can play synergy, thus improve the bond strength of heat resistance conveyor belt covering glue layer and skeleton or cloth interlayer.
Compared with prior art, the invention has the beneficial effects as follows:
(1) thermotolerance of heat resistance conveyor belt covering glue layer and bond properties significantly improve, and substantially prolongs the work-ing life of heat resistance conveyor belt, can better meet the high temperature resistant requirement of T4 type heat resistance conveyor belt;
(2) heat resistance conveyor belt provided by the invention, good material property can be obtained: hardness (Shore A type) is 60 ± 5 degree, tensile strength is greater than 15MPa, tensile yield is between 450 ~ 600%, the bond strength of each interlayer is greater than 2.1N/mm at 175 DEG C, it compares the performance of conventional formulation and thermotolerance improves greatly, and processing performance is stablized, thus the requirement of T4 type heat resistance conveyor belt can better be met.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment 1:
A kind of heat resistance conveyor belt rubber cover, component and mass fraction as follows:
The sizing material that the component provided according to embodiment 1 and mass fraction obtain is applied, through measuring:
Bond strength at 175 DEG C: 2.7N/mm;
Under 175 DEG C × 96h, aging rear properties is as follows:
Embodiment 2:
A kind of heat resistance conveyor belt rubber cover, component and mass fraction as follows:
The sizing material that the component provided according to embodiment 2 and mass fraction obtain is applied, through measuring:
Bond strength at 175 DEG C: 3.1N/mm;
Under 175 DEG C × 96h, aging rear properties is as follows:
Embodiment 3:
A kind of heat resistance conveyor belt rubber cover, component and mass fraction as follows:
The sizing material that the component provided according to embodiment 3 and mass fraction obtain is applied, through measuring:
Bond strength at 175 DEG C: 3.0N/mm
Under 175 DEG C × 96h, aging rear properties is as follows:
Embodiment 4:
A kind of heat resistance conveyor belt rubber cover, component and mass fraction as follows:
The sizing material that the component provided according to embodiment 4 and mass fraction obtain is applied, through measuring:
Bond strength at 175 DEG C: 2.8N/mm
Under 175 DEG C × 96h, aging rear properties is as follows:
Embodiment 5:
A kind of heat resistance conveyor belt rubber cover, component and mass fraction as follows:
The sizing material that the component provided according to embodiment 5 and mass fraction obtain is applied, through measuring:
Bond strength at 175 DEG C: 3.3N/mm
Under 175 DEG C × 96h, aging rear properties is as follows:
It should be noted that, in embodiment 1-5, use the commercially available information of component as follows:
According to bond strength, the aging rear properties of embodiment 1-5, be all better than national technical standard.
Relevant national technical standard is as follows:
Bond strength technological standard >=2.1N/mm at 175 DEG C
Under 175 DEG C × 96h, aging rear properties technological standard is as follows:
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a heat resistance conveyor belt rubber cover, is characterized in that, component and mass fraction as follows:
Wherein, the mass fraction sum of described ethylene propylene rubber and described low Mooney terpolymer EP rubber is 100 parts.
2. a kind of heat resistance conveyor belt rubber cover according to claim 1, it is characterized in that component and mass fraction as follows:
3. a kind of heat resistance conveyor belt rubber cover according to claim 1, it is characterized in that component and mass fraction as follows:
4. a kind of heat resistance conveyor belt rubber cover according to claim 1, it is characterized in that component and mass fraction as follows:
5. a kind of heat resistance conveyor belt rubber cover according to claim 1, it is characterized in that component and mass fraction as follows:
6. a kind of heat resistance conveyor belt rubber cover according to claim 1, it is characterized in that component and mass fraction as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410635132.1A CN104312018B (en) | 2014-11-12 | 2014-11-12 | A kind of heat resistance conveyor belt rubber cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410635132.1A CN104312018B (en) | 2014-11-12 | 2014-11-12 | A kind of heat resistance conveyor belt rubber cover |
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| Publication Number | Publication Date |
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| CN104312018A true CN104312018A (en) | 2015-01-28 |
| CN104312018B CN104312018B (en) | 2016-07-06 |
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| CN201410635132.1A Active CN104312018B (en) | 2014-11-12 | 2014-11-12 | A kind of heat resistance conveyor belt rubber cover |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105037983A (en) * | 2015-08-24 | 2015-11-11 | 天津中和胶业股份有限公司 | Chlorinated butyl rubber heat-resistant conveyer belt cover rubber |
| CN105111593A (en) * | 2015-08-21 | 2015-12-02 | 芜湖华烨工业用布有限公司 | Novel heat-resisting conveyor belt covering rubber |
| WO2018130189A1 (en) | 2017-01-13 | 2018-07-19 | 杭州星庐科技有限公司 | Rubber composite, processing, conveyor belt applying composite, and manufacturing method |
| CN115246968A (en) * | 2022-07-15 | 2022-10-28 | 浙江双箭橡胶股份有限公司 | High-temperature-resistant wear-resistant covering rubber for conveyor belt and preparation method thereof |
| US11634566B2 (en) | 2017-01-13 | 2023-04-25 | Hangzhou Xinglu Technologies Co., Ltd. | Rubber composition, processing method thereof, and rubber product using the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101250305A (en) * | 2008-04-07 | 2008-08-27 | 北京化工大学 | High heat-resistant rubber composite material for conveyor belt covering |
| CN103044786A (en) * | 2012-12-29 | 2013-04-17 | 山东美晨科技股份有限公司 | Ethylene propylene rubber with high temperature resistance and low compression deformation |
-
2014
- 2014-11-12 CN CN201410635132.1A patent/CN104312018B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101250305A (en) * | 2008-04-07 | 2008-08-27 | 北京化工大学 | High heat-resistant rubber composite material for conveyor belt covering |
| CN103044786A (en) * | 2012-12-29 | 2013-04-17 | 山东美晨科技股份有限公司 | Ethylene propylene rubber with high temperature resistance and low compression deformation |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105111593A (en) * | 2015-08-21 | 2015-12-02 | 芜湖华烨工业用布有限公司 | Novel heat-resisting conveyor belt covering rubber |
| CN105037983A (en) * | 2015-08-24 | 2015-11-11 | 天津中和胶业股份有限公司 | Chlorinated butyl rubber heat-resistant conveyer belt cover rubber |
| WO2018130189A1 (en) | 2017-01-13 | 2018-07-19 | 杭州星庐科技有限公司 | Rubber composite, processing, conveyor belt applying composite, and manufacturing method |
| US11634566B2 (en) | 2017-01-13 | 2023-04-25 | Hangzhou Xinglu Technologies Co., Ltd. | Rubber composition, processing method thereof, and rubber product using the same |
| CN115246968A (en) * | 2022-07-15 | 2022-10-28 | 浙江双箭橡胶股份有限公司 | High-temperature-resistant wear-resistant covering rubber for conveyor belt and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN104312018B (en) | 2016-07-06 |
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Address after: 300000, 81, Tianjin, Wuqing, Beijing and Tianjin Science and Technology Valley and Park Road Patentee after: TIANJIN ZHONGHE RUBBER INDUSTRY CO., LTD. Address before: 300000, 81, Tianjin, Wuqing, Beijing and Tianjin Science and Technology Valley and Park Road Patentee before: Tianjin Xinzhonghe Rubber Industry Co., Ltd. |
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