CN110643081A - Wear-resistant flame-retardant conveyor belt natural rubber material and preparation method thereof - Google Patents
Wear-resistant flame-retardant conveyor belt natural rubber material and preparation method thereof Download PDFInfo
- Publication number
- CN110643081A CN110643081A CN201910930593.4A CN201910930593A CN110643081A CN 110643081 A CN110643081 A CN 110643081A CN 201910930593 A CN201910930593 A CN 201910930593A CN 110643081 A CN110643081 A CN 110643081A
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- Prior art keywords
- wear
- mixing
- natural rubber
- resistant
- conveyor belt
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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
- C08L7/00—Compositions of natural rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
- B65G15/32—Belts or like endless load-carriers made of rubber or plastics
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
Abstract
The invention discloses a natural rubber material for a wear-resistant flame-retardant conveyor belt, which comprises the following components in percentage by weight: 27.56-35.43% of natural rubber, 3.86-12.05% of butadiene rubber, 17.73-21.52% of medium super wear-resistant carbon black, 13.78-17.72% of environment-friendly flame retardant, 14.96-18.9% of common flame retardant, 2.95-3.74% of anti-aging agent, 1.18-3.94% of active agent, 0.47-1.01% of vulcanizing agent, 0.39-0.87% of accelerator and 0.39-1.97% of processing aid. The invention has the characteristics of high wear resistance, good flame retardant property, high tensile strength, flex fatigue resistance, proper elongation and good processability, is suitable for an extrusion molding processing technology, and has long service life of vulcanized products.
Description
Technical Field
The invention relates to rubber, in particular to a natural rubber sizing material for a wear-resistant flame-retardant conveying belt and a preparation method thereof.
Background
The rubber conveyer belt is a rubber product widely used in mines and docks, and has great market demand. With the continuous promotion of industrial automation and the annual rise of labor cost, the quality requirement of people on the rubber conveying belt is higher and higher. However, when the existing rubber material formula meets the performance requirements of the conveying belt, the physical and mechanical properties, particularly tensile strength and flame retardant properties of the rubber material formula cannot be well matched with the environmental protection requirements at the same time.
Disclosure of Invention
The invention aims to solve the problems and provides a natural rubber material for a wear-resistant flame-retardant conveyor belt and a method for preparing the natural rubber material.
In order to achieve the purpose, the invention provides the following technical scheme: the natural rubber material for the wear-resistant flame-retardant conveyor belt comprises the following components in percentage by weight:
the wear-resistant flame-retardant conveyor belt natural rubber material comprises the following components in percentage by weight:
the wear-resistant flame-retardant conveyor belt natural rubber material comprises the following components in percentage by weight:
wherein the environment-friendly flame retardant is decabromodiphenylethane.
Wherein the butadiene rubber is BR 9000.
Wherein the medium and super wear-resistant carbon black is N234.
Wherein the anti-aging agent is prepared by compounding a heat-resistant anti-aging agent, an ozone-resistant anti-aging agent and a flex crack-resistant anti-aging agent according to the optimal protection effect.
The invention also provides a preparation method of the natural rubber compound for the wear-resistant flame-retardant conveyor belt, which comprises the following steps:
(1) preparing materials: the formulation of claim 1, wherein the natural rubber and the butadiene rubber are separately weighted, and the medium and super wear-resistant carbon black and the processing aid are automatically weighted by an auxiliary machine on a rubber mixing system and are injected during mixing; the anti-aging agent and the activator are mixed together to form a mixture A; the environment-friendly flame retardant and the common flame retardant are mixed together to form a mixture B; compounding a vulcanizing agent and an accelerator together to form a compound C;
(2) first mixing: adding natural rubber, butadiene rubber, a material A and medium-super wear-resistant carbon black into an internal mixer, mixing for 70-110 seconds, then lifting a hammer for cleaning, adding a material B into the internal mixer, mixing for 40-80 seconds, then lifting the hammer for cleaning again, automatically injecting a processing aid for mixing for 30-70 seconds, mixing for 20-40 seconds again, discharging to a lower auxiliary machine for discharging, and preparing a mixed rubber A;
(3) and (3) second mixing: and (3) putting the rubber compound A and the ingredient C prepared by the first mixing into an internal mixer for mixing for 20-40 seconds, then continuously mixing for 20-40 seconds after cleaning, then discharging to a cutting machine for discharging, and thus completing the preparation.
In the step (3), the rubber compound A and the ingredient C are put into an internal mixer for mixing.
According to the invention, natural rubber is selected as a main material of the formula of the rubber material and is combined with the butadiene rubber, so that the vulcanized rubber material product has high tensile strength and wear resistance, and the material cost is relatively low; the super wear-resistant carbon black in the formula is beneficial to improving the physical and mechanical properties, particularly the wear resistance, of the rubber material, and simultaneously can keep the better processing property of the rubber material; and the reasonable combination of the environment-friendly flame retardant and other common flame retardants enables the oxygen index of the rubber material to reach more than 30, and meets the environment-friendly requirement of no harm to human bodies.
Compared with the prior art, the invention has the characteristics of high tensile strength, high flame retardance, ozone aging resistance, flex fatigue resistance and good processability, and is suitable for an extrusion molding processing technology.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples 1 to 6
The natural rubber material of the wear-resistant flame-retardant conveyor belt is prepared according to the following steps:
(1) preparing materials: the formulation of claim 1, wherein the natural rubber and the butadiene rubber are separately weighted, and the medium and super wear-resistant carbon black and the processing aid are automatically weighted by an auxiliary machine on a rubber mixing system and are injected during mixing; the anti-aging agent and the activator are mixed together to form a mixture A; the environment-friendly flame retardant and the common flame retardant are mixed together to form a mixture B; compounding a vulcanizing agent and an accelerator together to form a compound C;
(2) first mixing: adding natural rubber, butadiene rubber, a material A and medium-super wear-resistant carbon black into an internal mixer, mixing for 70-110 seconds, then lifting a hammer for cleaning, adding a material B into the internal mixer, mixing for 40-80 seconds, then lifting the hammer for cleaning again, automatically injecting a processing aid for mixing for 30-70 seconds, mixing for 20-40 seconds again, discharging to a lower auxiliary machine for discharging, and preparing a mixed rubber A;
(3) and (3) second mixing: and (3) putting the rubber compound A and the ingredient C prepared by the first mixing into an internal mixer for mixing for 20-40 seconds, then continuously mixing for 20-40 seconds after cleaning, then discharging to a cutting machine for discharging, and thus completing the preparation.
In the step (3), the rubber compound A and the ingredient C are put into an internal mixer for mixing.
The components and contents of examples 1 to 6 are shown in Table 1.
TABLE 1 weight percents of examples 1-6
Table 2 shows the performance parameters of the products obtained in examples 1 to 6.
TABLE 2 Performance parameters of the products obtained in examples 1 to 6
As can be seen from Table 2, the natural rubber compound for the conveyor belt obtained by the technical scheme of the invention has good tensile strength and excellent flame retardant property. Particularly, the comprehensive physical and mechanical properties, flame retardant property and processing property of the material are the best in the embodiment 2, the tensile strength reaches 18.6MPa, and the DIN abrasion is only 76mm3The oxygen index reaches 33.7, and the extrusion fluidity of the rubber material is better suitable for the extrusion molding processing technology.
The invention has the characteristics of high wear resistance, good flame retardant property, high tensile strength, flex fatigue resistance, proper elongation and good processability, is suitable for an extrusion molding processing technology, and has long service life of vulcanized products.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (7)
1. The wear-resistant flame-retardant conveyor belt natural rubber material is characterized by comprising the following components in percentage by weight:
2. the wear-resistant flame-retardant conveyor belt natural rubber compound as claimed in claim 1, which is composed of the following components in percentage by weight:
3. the wear-resistant flame-retardant conveyor belt natural rubber compound according to claim 1 or 2, wherein the environment-friendly flame retardant is decabromodiphenylethane.
4. The wear-resistant flame-retardant conveyor belt natural rubber compound of claim 1 or 2, wherein the butadiene rubber is BR 9000.
5. The wear-resistant flame-retardant conveyor belt natural rubber compound according to claim 1 or 2, characterized in that: the medium super wear-resistant carbon black is N234.
6. The natural rubber compound for a wear-resistant flame-retardant conveyor belt according to claim 5, wherein: the anti-aging agent is prepared by compounding a heat-resistant anti-aging agent, an ozone-resistant anti-aging agent and a flex crack-resistant anti-aging agent according to the optimal protection effect.
7. The preparation method of the natural rubber compound for the wear-resistant flame-retardant conveyor belt according to any one of claims 1 to 6, characterized by comprising the following steps:
(1) preparing materials: the formulation of claim 1, wherein the natural rubber and the butadiene rubber are separately weighted, and the medium and super wear-resistant carbon black and the processing aid are automatically weighted by an auxiliary machine on a rubber mixing system and are injected during mixing; the anti-aging agent and the activator are mixed together to form a mixture A; the environment-friendly flame retardant and the common flame retardant are mixed together to form a mixture B; compounding a vulcanizing agent and an accelerator together to form a compound C;
(2) first mixing: adding natural rubber, butadiene rubber, a material A and medium-super wear-resistant carbon black into an internal mixer, mixing for 70-110 seconds, then lifting a hammer for cleaning, adding a material B into the internal mixer, mixing for 40-80 seconds, then lifting the hammer for cleaning again, automatically injecting a processing aid for mixing for 30-70 seconds, mixing for 20-40 seconds again, discharging to a lower auxiliary machine for discharging, and preparing a mixed rubber A;
(3) and (3) second mixing: and (3) putting the rubber compound A and the ingredient C prepared by the first mixing into an internal mixer for mixing for 20-40 seconds, then continuously mixing for 20-40 seconds after cleaning, then discharging to a cutting machine for discharging, and thus completing the preparation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910930593.4A CN110643081A (en) | 2019-09-27 | 2019-09-27 | Wear-resistant flame-retardant conveyor belt natural rubber material and preparation method thereof |
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| CN201910930593.4A CN110643081A (en) | 2019-09-27 | 2019-09-27 | Wear-resistant flame-retardant conveyor belt natural rubber material and preparation method thereof |
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| CN110643081A true CN110643081A (en) | 2020-01-03 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724321A (en) * | 2005-06-24 | 2006-01-25 | 阳江市北山胶化有限公司 | Impact resistance high wearing-proof conveyer belt |
| US8007917B2 (en) * | 2007-04-25 | 2011-08-30 | Veyance Technologies, Inc. | Non-halogenated rubber compounds for use in conveyor belts |
| CN102516617A (en) * | 2011-12-08 | 2012-06-27 | 无锡宝通带业股份有限公司 | High-strength laminated fire-retarding conveyer belt coating rubber, and preparation method thereof |
| CN102643459A (en) * | 2012-05-08 | 2012-08-22 | 无锡宝通带业股份有限公司 | Super-wear-resistant covering rubber for conveying belt and preparation method thereof |
| CN104017257A (en) * | 2014-06-05 | 2014-09-03 | 张家港市华申工业橡塑制品有限公司 | Composition for flame-retardant conveying belt and flame-retardant conveying belt |
| ES2527898A1 (en) * | 2013-07-30 | 2015-01-30 | Kauman, S.A.U. | Fire-retardant rubber compositions (Machine-translation by Google Translate, not legally binding) |
-
2019
- 2019-09-27 CN CN201910930593.4A patent/CN110643081A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724321A (en) * | 2005-06-24 | 2006-01-25 | 阳江市北山胶化有限公司 | Impact resistance high wearing-proof conveyer belt |
| US8007917B2 (en) * | 2007-04-25 | 2011-08-30 | Veyance Technologies, Inc. | Non-halogenated rubber compounds for use in conveyor belts |
| CN102516617A (en) * | 2011-12-08 | 2012-06-27 | 无锡宝通带业股份有限公司 | High-strength laminated fire-retarding conveyer belt coating rubber, and preparation method thereof |
| CN102643459A (en) * | 2012-05-08 | 2012-08-22 | 无锡宝通带业股份有限公司 | Super-wear-resistant covering rubber for conveying belt and preparation method thereof |
| ES2527898A1 (en) * | 2013-07-30 | 2015-01-30 | Kauman, S.A.U. | Fire-retardant rubber compositions (Machine-translation by Google Translate, not legally binding) |
| CN104017257A (en) * | 2014-06-05 | 2014-09-03 | 张家港市华申工业橡塑制品有限公司 | Composition for flame-retardant conveying belt and flame-retardant conveying belt |
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