CN115011002A - Vulcanization process for large-size rubber track - Google Patents
Vulcanization process for large-size rubber track Download PDFInfo
- Publication number
- CN115011002A CN115011002A CN202210663981.2A CN202210663981A CN115011002A CN 115011002 A CN115011002 A CN 115011002A CN 202210663981 A CN202210663981 A CN 202210663981A CN 115011002 A CN115011002 A CN 115011002A
- Authority
- CN
- China
- Prior art keywords
- rubber
- vulcanization
- parts
- core rod
- metal core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 175
- 239000005060 rubber Substances 0.000 title claims abstract description 175
- 238000004073 vulcanization Methods 0.000 title claims abstract description 121
- 229910052751 metal Inorganic materials 0.000 claims abstract description 44
- 239000002184 metal Substances 0.000 claims abstract description 43
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 239000000853 adhesive Substances 0.000 claims abstract description 17
- 230000001070 adhesive effect Effects 0.000 claims abstract description 17
- 238000000465 moulding Methods 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 238000004381 surface treatment Methods 0.000 claims abstract 2
- 150000001875 compounds Chemical class 0.000 claims description 27
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 26
- 244000025254 Cannabis sativa Species 0.000 claims description 20
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims description 20
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims description 20
- 235000009120 camo Nutrition 0.000 claims description 20
- 235000005607 chanvre indien Nutrition 0.000 claims description 20
- 239000000835 fiber Substances 0.000 claims description 20
- 239000011487 hemp Substances 0.000 claims description 20
- 239000011347 resin Substances 0.000 claims description 17
- 229920005989 resin Polymers 0.000 claims description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 239000002041 carbon nanotube Substances 0.000 claims description 16
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 16
- 239000011787 zinc oxide Substances 0.000 claims description 13
- 239000004927 clay Substances 0.000 claims description 12
- 239000004200 microcrystalline wax Substances 0.000 claims description 12
- 235000019808 microcrystalline wax Nutrition 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- 238000005422 blasting Methods 0.000 claims description 10
- 238000003618 dip coating Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 238000005488 sandblasting Methods 0.000 claims description 10
- 244000043261 Hevea brasiliensis Species 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000007822 coupling agent Substances 0.000 claims description 9
- 238000010894 electron beam technology Methods 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 9
- 229920003052 natural elastomer Polymers 0.000 claims description 9
- 229920001194 natural rubber Polymers 0.000 claims description 9
- 239000003208 petroleum Substances 0.000 claims description 9
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 8
- 230000003712 anti-aging effect Effects 0.000 claims description 8
- 239000005062 Polybutadiene Substances 0.000 claims description 7
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 7
- 229920002857 polybutadiene Polymers 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 5
- 229910052593 corundum Inorganic materials 0.000 claims description 5
- 239000010431 corundum Substances 0.000 claims description 5
- 230000001678 irradiating effect Effects 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 2
- UIPKUCOYESFEMJ-UHFFFAOYSA-N [Zn].[La] Chemical group [Zn].[La] UIPKUCOYESFEMJ-UHFFFAOYSA-N 0.000 claims 1
- 229940116901 diethyldithiocarbamate Drugs 0.000 claims 1
- LMBWSYZSUOEYSN-UHFFFAOYSA-N diethyldithiocarbamic acid Chemical compound CCN(CC)C(S)=S LMBWSYZSUOEYSN-UHFFFAOYSA-N 0.000 claims 1
- 238000005520 cutting process Methods 0.000 abstract description 11
- 230000032683 aging Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 24
- 238000012360 testing method Methods 0.000 description 15
- 238000012545 processing Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 3
- 238000000691 measurement method Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 101000668416 Homo sapiens Regulator of chromosome condensation Proteins 0.000 description 1
- 102100039977 Regulator of chromosome condensation Human genes 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- -1 zinc lanthanum diethyldithiocarbamate Chemical group 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/12—Dielectric heating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
- C08J3/246—Intercrosslinking of at least two polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/28—Treatment by wave energy or particle radiation
-
- 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
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Toxicology (AREA)
- Physics & Mathematics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
The invention belongs to the technical field of rubber track production, and discloses a vulcanization process for a large-size rubber track. The vulcanization process comprises the steps of raw material preparation and treatment, metal core rod surface treatment and adhesive coating, prevulcanization, molding, electromagnetic heating vulcanization and the like. The large-size rubber track finished product prepared by the process flow has excellent wear resistance and cutting resistance, and has remarkable mechanical property while having aging resistance.
Description
Technical Field
The invention relates to the technical field of rubber track production, in particular to a vulcanization process for a large-size rubber track.
Background
The rubber crawler belt is a rubber product compounded by rubber and metal or fiber materials, mainly comprises four parts of a core metal, a strong layer, a buffer layer and a rubber elastic body, and is used for transmitting driving force for crawler-type traveling machinery under the combined action of the core metal, the strong layer, the buffer layer and the rubber elastic body. The traditional rubber track can be divided into two categories, namely a cored gold rubber track and a coreless gold rubber track according to different internal structures, the damage of the rubber track to fields and highways is much smaller than that of a steel track, the adaptability to wet fields is better than that of the steel track and a rubber tire, and the rubber track also has the characteristics of energy conservation, environmental protection and the like.
The vulcanization molding of the rubber track is the last process for obtaining a final product in the manufacturing process of the rubber track, and when the rubber track is molded, a layer of adhesive is generally coated on the surface of the metal core rod, so that the adhesive and a rubber material are crosslinked to generate a three-dimensional network structure through the vulcanization process, and finally the metal core rod and the rubber material are tightly bonded, so that the vulcanization process determines the service life of the rubber track.
The existing rubber track vulcanization process mostly adopts a flat vulcanizing machine to carry out vulcanization twice or more, when heat generated by a heating element is longitudinally conducted to a vulcanization mold through a hot plate, the whole vulcanization mold cannot be synchronously heated, and particularly for large-size rubber tracks required by large-size machinery, the vulcanization temperatures of different parts of a finished product prepared in the vulcanization mode are obviously different, so that the service life and the performance of the large-size rubber track product are seriously influenced.
Disclosure of Invention
In view of the above, the invention provides a vulcanization process for a large-size rubber track, which aims to solve the technical problems that the conventional common heating vulcanization process (a flat vulcanizing machine) is not uniform in heat conduction when vulcanizing the large-size rubber track, so that the vulcanization is not thorough due to different vulcanization temperatures of different parts of the large-size rubber track, the performance of the large-size rubber track is weakened and unstable, and the service life of the large-size rubber track is shortened.
In order to achieve the purpose, the invention adopts the following technical scheme:
a vulcanization process of a large-size rubber track specifically comprises the following steps:
(1) preparing and treating raw materials:
a: taking raw rubber, clay, carbon nano tubes, a silane coupling agent, hemp fibers, an anti-aging agent, nano zinc oxide, tear-resistant resin, microcrystalline wax, a vulcanization accelerator and shale ash for later use;
b: adding raw rubber, hemp fiber, a silane coupling agent, nano zinc oxide and clay into an open mill for plastication for 120s, and controlling the temperature at 155-160 ℃ to obtain rubber compound b;
c: placing the rubber compound b into an internal mixer, adding an anti-aging agent, tear-resistant resin, a carbon nano tube, shale ash, microcrystalline wax and a vulcanization accelerator, controlling the temperature at 110-;
(2) treating the surface of the metal core rod and coating an adhesive;
d: mechanically blasting sand on the metal core rod by using No. 30 brown corundum, wherein the sand blasting time is 15-30min, and blasting the surface of the metal core rod clean after the sand blasting is finished;
e: d, ultrasonically cleaning the metal core rod treated in the step d for 10-15 min;
f: sequentially dipping the cleaned metal core rod with primer and surface glue for later use;
(3) pre-vulcanizing: irradiating the rubber track rubber compound by using an electron beam, wherein the irradiation dose is 100-150 kGy;
(4) molding: placing the irradiated rubber track rubber compound in a track forming machine with a metal core rod for forming;
(5) electromagnetic heating and vulcanizing: placing the rubber track molded in the step (4) in an electromagnetic heating vulcanization mold for vulcanization; the vulcanization temperature is controlled at 145-150 ℃, the vulcanization time is 15-17min, and the vulcanization pressure is 10-15 Mpa.
(6) And (5) taking out a finished product after vulcanization.
Preferably, by mass, 100-200 parts of crude rubber, 15-20 parts of clay, 5-7 parts of carbon nano tube, 1-2 parts of silane coupling agent, 4-5 parts of hemp fiber, 2-5 parts of anti-aging agent, 1-3 parts of nano zinc oxide, 6-11 parts of tear-resistant resin, 4-8 parts of microcrystalline wax, 2-4 parts of vulcanization accelerator and 3-6 parts of shale ash.
Preferably, the raw rubber is formed by mixing natural rubber, chloroprene rubber and butadiene rubber according to the weight ratio of 2-4: 1.5-2: 1-2.
Preferably, the anti-aging agent is LIG-FLEX 601-75.
Preferably, the vulcanization accelerator is zinc lanthanum diethyldithiocarbamate complex (znlacc).
Preferably, the tear resistant resin is a petroleum resin.
Preferably, the primer dip-coated in the step f is a PLT815 adhesive; the surface glue is 821 LF.
Preferably, the specific operation of step f is: dip-coating primer PLT815 on the cleaned metal core rod, completely drying at 70-80 ℃, dip-coating surface glue 821LF, and completely drying at 70-80 ℃.
Preferably, the silane coupling agent is the coupling agent Si 69.
According to the technical scheme, compared with the prior art, the invention discloses a vulcanization process of a large-size rubber track.
1. In the technical scheme of the invention, the large-size rubber crawler belt is prepared by taking natural rubber, chloroprene rubber and butadiene rubber as the basis and various auxiliary agents through a vulcanization process. The vulcanization process flow is as follows: preparing and processing raw materials → processing the surface of the metal core rod and coating adhesive → prevulcanization → molding → electromagnetic heating vulcanization → taking out the finished product. The large-size rubber track finished product prepared by the process flow has excellent wear resistance and cutting resistance, and has remarkable mechanical property while having aging resistance.
2. The invention carries out the step of 'pre-vulcanization' before carrying out rubber track vulcanization; namely, firstly, the rubber track rubber compound is irradiated by high-energy electron beams with the irradiation dose of 100-150 kGy. The test and measurement data show that the performance of the large-size rubber track prepared by the step of pre-vulcanizing is superior to that of the large-size rubber track prepared without the step of pre-vulcanizing. The high-energy electron beam has higher energy and higher penetrability than ultraviolet irradiation, a large number of C-C bonds are arranged in natural rubber, butadiene rubber and chloroprene rubber, after the irradiation of the high-energy electron beam, the C-C bonds in various rubbers are firstly crosslinked, and then carbon nano tubes are added in rubber track rubber compound, and the carbon nano tubes can be combined with the rubber on the surface to form C-C bond crosslinking, so that a net structure which is firm and stable inside and outside is formed, the stability of the rubber track rubber compound is improved, the vulcanization time is shortened for the electromagnetic heating vulcanization step after molding, the vulcanization efficiency is improved, the foundation that a large-size rubber track after vulcanization has wear resistance, cutting resistance and other mechanical properties is laid, and the service life of the rubber track is prolonged.
3. Compared with the common heating vulcanization (plate press vulcanization), the electromagnetic heating vulcanization process adopted by the invention is a heating mode in which the electromagnetic coil is wound on the outer wall of the vulcanization mold or embedded in the inner wall of the vulcanization mold, on one hand, the heating mode enables the heat conduction in the vulcanization mold to be more uniform, and particularly, the temperature difference of each part of a large-size rubber track product is small during vulcanization, so that the wear resistance, cutting resistance and other mechanical properties of the large-size rubber track product are improved, the performance of the rubber track is more stable, the service life is prolonged, the use range of the rubber track is widened, and the economic use benefit is improved; on the other hand, the heating mode is three-dimensional full-range heating, so that the vulcanizing mold can reach the vulcanizing temperature in a short time, the vulcanizing time is effectively shortened, and the vulcanizing efficiency is improved.
4. According to the invention, petroleum resin is added into the blending rubber to play a role in softening and diluting, the elongation at break of the large-size rubber track is improved, meanwhile, the hardness of the blending rubber is increased due to the added carbon nano tube, and the carbon nano tube and the blending rubber are matched with each other, so that the tear resistance of the large-size rubber track is improved, the tensile strength and the elongation at break of the rubber track are also improved, and the service life of the rubber track is prolonged.
5. The hemp fiber is added into the blended rubber system prepared by the invention, because the hemp fiber is polar, the natural rubber in the blended rubber contains a large amount of polar groups, and simultaneously, after the coupling agent Si69 is added, the hemp fiber has a lubricating effect in the rubber matrix, so that a uniform interface phase is formed between the hemp fiber and the rubber matrix, the hemp fiber and the natural rubber are more tightly connected by hydrogen bonds, the hemp fiber is better dispersed in the blended rubber, and in addition, the hemp fiber also has a spatial structure inside, so that the hemp fiber and a rubber molecular chain can be mutually entangled and the bonding is more tight; and the prepared large-size rubber track has improved tear strength, tensile strength and other physical properties. In the vulcanization process, the nano zinc oxide plays a role in promoting crosslinking, so that the defects in a crosslinking network between the adhesive and the rubber track rubber compound are reduced, the vulcanization is more thorough, and the vulcanization efficiency is higher.
6. Shale ash is added into the prepared blending rubber system, the shale ash has a long-chain structure and has the characteristics of hydrophilicity and lipophobicity, and when the shale ash is used as a rubber filler, the shale ash and a rubber material are combined more tightly, so that the physical and mechanical properties of the rubber track prepared by the invention are improved; furthermore, the rock ash contains a plurality of metal oxides which are used as excellent light shielding agents, so that the aging reaction of the prepared rubber crawler belt is weakened, and the rubber crawler belt shows better aging resistance.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
The embodiment 1 of the invention discloses a vulcanization process of a large-size rubber track, which specifically comprises the following steps:
(1) preparing and treating raw materials:
a: taking 100 parts of raw rubber, 15 parts of clay, 5 parts of carbon nano tubes, 691 parts of coupling agent Si, 4 parts of hemp fiber, 601-752 parts of LIG-FLEX, 1 part of nano zinc oxide, 6 parts of petroleum resin, 4 parts of microcrystalline wax, 2 parts of ZnLaDC and 3 parts of shale ash for later use; the raw rubber is formed by mixing natural rubber, chloroprene rubber and butadiene rubber according to the weight ratio of 2: 1.5: 1;
b: adding raw rubber, hemp fiber, a coupling agent Si69, nano zinc oxide and clay into an open mill for plastication for 100s, and controlling the temperature at 155 ℃ to obtain a rubber compound b;
c: putting the rubber compound b into an internal mixer, adding LIG-FLEX601-75, petroleum resin, carbon nano tubes, shale ash, microcrystalline wax and ZnLaDC, controlling the temperature at 100 ℃ for 110s, and obtaining the rubber track rubber compound;
(2) treating the surface of the metal core rod and coating an adhesive;
d: mechanically blasting sand on the metal core rod by using No. 30 brown corundum, wherein the sand blasting time is 15min, and blasting the surface of the metal core rod clean after the sand blasting is finished;
e: d, ultrasonically cleaning the metal core rod treated in the step d for 10 min;
f: dip-coating the cleaned metal core rod with primer PLT815, completely drying at 70 ℃, dip-coating surface glue 821LF, and completely drying at 70 ℃ for later use;
(3) pre-vulcanizing: irradiating the rubber track rubber compound by using an electron beam, wherein the irradiation dose is 100 kGy;
(4) molding: placing the irradiated rubber track rubber compound in a track forming machine with a metal core rod for forming;
(5) electromagnetic heating and vulcanizing: placing the rubber track formed in the step (4) in an electromagnetic heating vulcanization mould for vulcanization; controlling the vulcanization temperature at 145 ℃, the vulcanization time at 15min and the vulcanization pressure at 10 Mpa;
(6) and (5) taking out a finished product after vulcanization.
The embodiment 2 of the invention discloses a vulcanization process of a large-size rubber track, which specifically comprises the following steps:
(1) preparing and treating raw materials:
a: according to the mass parts, 200 parts of raw rubber, 20 parts of clay, 7 parts of carbon nano tubes, 692 parts of coupling agent Si, 5 parts of hemp fiber, 601-755 parts of LIG-FLEX, 3 parts of nano zinc oxide, 11 parts of petroleum resin, 8 parts of microcrystalline wax, 4 parts of ZnLaDC and 6 parts of shale ash are taken for standby; the raw rubber is formed by mixing natural rubber, chloroprene rubber and butadiene rubber according to the weight ratio of 4: 2;
b: adding raw rubber, hemp fiber, a coupling agent Si69, nano zinc oxide and clay into an open mill for plastication for 120s, and controlling the temperature at 160 ℃ to obtain a rubber compound b;
c: putting the rubber compound b into an internal mixer, adding LIG-FLEX601-75, petroleum resin, carbon nano tubes, shale ash, microcrystalline wax and ZnLaDC, controlling the temperature at 110 ℃ for 130s, and obtaining the rubber track rubber compound;
(2) treating the surface of the metal core rod and coating an adhesive;
d: mechanically blasting sand on the metal core rod by using No. 30 brown corundum, wherein the sand blasting time is 30min, and after the sand blasting is finished, blasting the surface of the metal core rod;
e: d, ultrasonically cleaning the metal core rod treated in the step d for 15 min;
f: dip-coating primer PLT815 on the cleaned metal core rod, completely drying at 80 ℃, dip-coating surface glue 821LF, and completely drying at 80 ℃ for later use;
(3) pre-vulcanizing: irradiating the rubber track rubber compound by using an electron beam, wherein the irradiation dose is 150 kGy;
(4) molding: placing the rubber track rubber compound after irradiation in a track forming machine with a metal core rod for forming;
(5) electromagnetic heating and vulcanizing: placing the rubber track formed in the step (4) in an electromagnetic heating vulcanization mould for vulcanization; controlling the vulcanization temperature at 150 ℃, the vulcanization time at 17min and the vulcanization pressure at 15 Mpa;
(6) and (5) taking out a finished product after vulcanization.
The embodiment 3 of the invention discloses a vulcanization process of a large-size rubber track, which specifically comprises the following steps:
(1) preparing and treating raw materials:
a: according to the mass parts, 150 parts of raw rubber, 18 parts of clay, 6 parts of carbon nano tubes, 6 parts of coupling agent Si691.5 parts of hemp fiber, 4.5 parts of LIG-FLEX 601-753.5 parts, 2 parts of nano zinc oxide, 10 parts of petroleum resin, 6 parts of microcrystalline wax, 3 parts of ZnLaDC and 4.5 parts of shale ash are taken for standby; the raw rubber is formed by mixing natural rubber, chloroprene rubber and butadiene rubber according to the weight ratio of 3: 1.8: 1.5;
b: adding raw rubber, hemp fiber, a coupling agent Si69, nano zinc oxide and clay into an open mill for plastication for 110s, and controlling the temperature at 158 ℃ to obtain a rubber compound b;
c: putting the rubber compound b into an internal mixer, adding LIG-FLEX601-75, petroleum resin, carbon nano tubes, shale ash, microcrystalline wax and ZnLaDC, controlling the temperature at 105 ℃ for 120s, and obtaining the rubber track rubber compound;
(2) treating the surface of the metal core rod and coating an adhesive;
d: mechanically blasting sand on the metal core rod by using No. 30 brown corundum, wherein the sand blasting time is 20min, and after the sand blasting is finished, blasting the surface of the metal core rod;
e: d, ultrasonically cleaning the metal core rod treated in the step d for 12 min;
f: dip-coating primer PLT815 on the cleaned metal core rod, completely drying at 75 ℃, dip-coating surface glue 821LF, and completely drying at 75 ℃ for later use;
(3) pre-vulcanizing: irradiating the rubber track rubber compound by using electron beams, wherein the irradiation dose is 120 kGy;
(4) molding: placing the irradiated rubber track rubber compound in a track forming machine with a metal core rod for forming;
(5) electromagnetic heating and vulcanizing: placing the rubber track molded in the step (4) in an electromagnetic heating vulcanization mold for vulcanization; controlling the vulcanization temperature at 148 ℃, the vulcanization time at 16min and the vulcanization pressure at 12 Mpa;
(6) and (5) taking out a finished product after vulcanization.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Test example 1
Performance measurement of large-size rubber track finished product prepared by vulcanization process
The large-size rubber track finished products prepared in the examples 1, 2 and 3 are subjected to measurement of other mechanical properties such as cut resistance and the like, and the measurement method is as follows:
cutting resistance: the tire rotation number is 720rad/min, the striking frequency is 120 times/min, the overall dimension of a cutter is 6.3 multiplied by 22.0mm, the angle of a cutter point is 60 degrees, the sharpness of the cutter point is 0.015-0.020mm, and the cutting loss after 20min is recorded by using a rubber dynamic cut-resistant testing machine (RCC1, Tech & ltSUB & gt, Wanhui & ltSUB & gt, China).
And testing other performances of the finished rubber track according to corresponding national standards.
TABLE 1 Performance test results of finished large-sized rubber tracks prepared in various examples
As can be seen from Table 1, the large-sized rubber track prepared by the vulcanization process of the present invention has excellent wear resistance, cutting resistance, flexing resistance and mechanical properties.
Test example 2
Aging resistance of large-size rubber track finished product prepared by vulcanization process of the invention
The finished large-size rubber crawler belts prepared in the examples 1, 2 and 3 are exposed for 1500h by using an ultraviolet lamp with the power of 40Wx4, and the test temperature is kept at 50 ℃ and the central wavelength of the spectrum of the ultraviolet lamp is 340 nm. The other mechanical properties such as the cut resistance and the like are measured, and the measuring method is the same as that of the test example 1. The test results are shown in Table 2.
TABLE 2 Performance test results of the finished large-sized rubber track prepared in each example after UV aging
As can be seen from Table 2, after aging for 1500h by ultraviolet, the large-size rubber track prepared by the vulcanization process of the invention still has good abrasion resistance, cutting resistance, flexing resistance and mechanical properties, and the rebound resilience can also reach 50%, which indicates that the ultraviolet aging resistance is good.
Test example 3
Effect of different vulcanization processes on the Properties of Large-size rubber track finished products
The large-size rubber crawler prepared by the vulcanization processes of the embodiment 3 and the comparative example 1 is measured for other mechanical properties such as cutting resistance and the like, and the measurement method is the same as that of the test example 1. The test results are shown in Table 3.
The large-size rubber track vulcanization process in the embodiment 3 of the invention comprises the following steps: preparing and processing raw materials → processing the surface of the metal core rod and coating adhesive → prevulcanization → molding → electromagnetic heating vulcanization → taking out the finished product.
The vulcanization process of the large-size rubber crawler of comparative example 1 was: preparing and processing raw materials → processing the surface of the metal core rod and coating adhesive → prevulcanization → molding → ordinary heating vulcanization → taking out the finished product. The common heating sulfurization is as follows: the hot plate of the flat vulcanizing machine → the upper and lower die plates of the die → the middle die plate of the die → the upper and lower surfaces of the rubber material → the side surface of the rubber material, thereby realizing the overall heating of the rubber material.
The other operating steps of comparative example 1 and example 3 described above are completely identical.
TABLE 3 test results of different vulcanization processes on the performance of large-sized rubber track finished products
As is apparent from Table 3, in the case that the comparative example 1 and the example 3 have the same operation procedures, the rubber crawler tracks prepared by the electromagnetic heating vulcanization method of the invention have better cutting resistance, wear resistance and other mechanical properties than the large-size rubber crawler tracks prepared by the ordinary heating vulcanization method. The common heating vulcanization adopts a flat vulcanizing machine to carry out vulcanization on a large-size rubber track product, and when heat generated by a heating element of a vulcanization mold is longitudinally conducted to the vulcanization mold through a hot plate, the whole vulcanization mold cannot be synchronously heated, so that the vulcanization temperatures of different parts of the large-size rubber track product are remarkably different, the vulcanization is uneven, the performance is unstable and poor, and the service life is shorter.
Test example 4
Effect of the Pre-vulcanization step on the Properties of Large-sized rubber crawler products
The large-size rubber crawler prepared by the vulcanization processes of the embodiment 3 and the comparative example 2 is measured for other mechanical properties such as cutting resistance and the like, and the measurement method is the same as that of the test example 1. The test results are shown in Table 4.
The large-size rubber track vulcanization process in the embodiment 3 of the invention comprises the following steps: preparing and processing raw materials → processing the surface of the metal core rod and coating adhesive → prevulcanization → molding → electromagnetic heating vulcanization → finishing vulcanization and taking out the finished product.
The vulcanization process of the large-sized rubber crawler of comparative example 2 is that the raw material is prepared and processed → the surface of the metal core rod is processed and the adhesive is coated → the molding → the electromagnetic heating vulcanization → the vulcanization is finished, and the finished product is taken out.
The other operating steps of comparative example 2 and example 3 described above are completely identical.
TABLE 4 measurement results of Properties of large-sized rubber crawler product in the prevulcanization step
As is apparent from Table 4, the performance of the large-sized rubber crawler prepared after the pre-vulcanization step was superior to that of the large-sized rubber crawler prepared without the pre-vulcanization step.
Claims (8)
1. The vulcanization process of the large-size rubber track is characterized by comprising the following steps:
(1) preparing and treating raw materials:
a: taking raw rubber, clay, carbon nano tubes, a silane coupling agent, hemp fibers, an anti-aging agent, nano zinc oxide, tear-resistant resin, microcrystalline wax, a vulcanization accelerator and shale ash for later use;
b: adding raw rubber, hemp fibers, a silane coupling agent, nano zinc oxide and clay into an open mill for plastication to obtain a mixed rubber b;
c: putting the rubber compound b into an internal mixer, adding an anti-aging agent, tear-resistant resin, a carbon nano tube, shale ash, microcrystalline wax and a vulcanization accelerator, and mixing to obtain rubber track rubber compound;
(2) treating the surface of the metal core rod and coating an adhesive;
(3) pre-vulcanizing: irradiating the rubber track rubber compound by using electron beams;
(4) molding: placing the irradiated rubber track rubber compound in a track forming machine with a metal core rod for forming;
(5) electromagnetic heating and vulcanizing: placing the rubber track molded in the step (4) in an electromagnetic heating vulcanization mold for vulcanization;
(6) and (5) taking out a finished product after vulcanization.
2. The vulcanization process of a large-size rubber crawler according to claim 1, wherein; in the step a, by mass, 100-200 parts of crude rubber, 15-20 parts of clay, 5-7 parts of carbon nano tubes, 1-2 parts of silane coupling agent, 4-5 parts of hemp fiber, 2-5 parts of anti-aging agent, 1-3 parts of nano zinc oxide, 6-11 parts of tear-resistant resin, 4-8 parts of microcrystalline wax, 2-4 parts of vulcanization accelerator and 3-6 parts of shale ash.
3. The vulcanization process of a large-size rubber crawler according to claim 1, wherein: the raw rubber is formed by mixing natural rubber, chloroprene rubber and butadiene rubber according to the weight ratio of 2-4: 1.5-2: 1-2; the anti-aging agent is LIG-FLEX 601-75; the vulcanization accelerator is a zinc lanthanum diethyl dithiocarbamate complex; the tear-resistant resin is petroleum resin; the silane coupling agent is a coupling agent Si 69.
4. The vulcanization process of a large-size rubber crawler according to claim 1, wherein: plastication time of the step b is 100-120 seconds, and temperature is controlled to be 155-160 ℃; the mixing temperature in the step c is controlled to be 110 ℃ for 110 and 130 seconds.
5. The vulcanization process of a large-size rubber track according to claim 1, characterized by the specific operation steps of surface treatment of the metal core rod and application of an adhesive;
d: mechanically blasting sand on the metal core rod by using No. 30 brown corundum, wherein the sand blasting time is 15-30min, and blasting the surface of the metal core rod clean after the sand blasting is finished;
e: d, ultrasonically cleaning the metal core rod treated in the step d for 10-15 min;
f: and sequentially dipping the cleaned metal core rod with primer and surface glue for later use.
6. The vulcanization process of one of the large-size rubber tracks in claim 5, wherein the primer dip-coated in step f is a PLT815 adhesive; the surface glue is 821 LF; the specific operation of the step f is as follows: dip-coating the cleaned metal core rod with primer PLT815, completely drying at 70-80 deg.C, dip-coating surface glue 821LF, and completely drying at 70-80 deg.C.
7. The vulcanization process of a large-size rubber crawler according to claim 1, wherein: the irradiation dose of the electron beam in the pre-vulcanization step is 100-150 kGy.
8. The vulcanization process of a large-size rubber crawler according to claim 1, wherein: when the electromagnetic heating vulcanization is carried out, the vulcanization temperature is controlled at 145-150 ℃, the vulcanization time is 15-17min, and the vulcanization pressure is 10-15 Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210663981.2A CN115011002B (en) | 2022-06-13 | 2022-06-13 | Vulcanization process for large-size rubber crawler belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210663981.2A CN115011002B (en) | 2022-06-13 | 2022-06-13 | Vulcanization process for large-size rubber crawler belt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115011002A true CN115011002A (en) | 2022-09-06 |
| CN115011002B CN115011002B (en) | 2024-03-08 |
Family
ID=83074706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210663981.2A Active CN115011002B (en) | 2022-06-13 | 2022-06-13 | Vulcanization process for large-size rubber crawler belt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115011002B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115678135A (en) * | 2023-01-04 | 2023-02-03 | 中国万宝工程有限公司 | Rubber composition with vulcanization promoting effect |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11158298A (en) * | 1997-11-26 | 1999-06-15 | Bridgestone Corp | Vulcanizing adhesion of rubber to metal and production of rubber crawler |
| CN101081901A (en) * | 2007-06-03 | 2007-12-05 | 青岛科技大学 | Radiation sulfidization processing method for rubber |
| US20150203668A1 (en) * | 2012-08-31 | 2015-07-23 | Soucy Techno Inc. | Rubber compositions and uses thereof |
| CN109233028A (en) * | 2018-08-24 | 2019-01-18 | 浙江久运汽车零部件有限公司 | A kind of ageing-resistant rubber belt track of high bond strength and preparation method thereof |
| CN113512237A (en) * | 2021-06-04 | 2021-10-19 | 徐工集团工程机械股份有限公司 | High-strength tear-resistant rubber track |
-
2022
- 2022-06-13 CN CN202210663981.2A patent/CN115011002B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11158298A (en) * | 1997-11-26 | 1999-06-15 | Bridgestone Corp | Vulcanizing adhesion of rubber to metal and production of rubber crawler |
| CN101081901A (en) * | 2007-06-03 | 2007-12-05 | 青岛科技大学 | Radiation sulfidization processing method for rubber |
| US20150203668A1 (en) * | 2012-08-31 | 2015-07-23 | Soucy Techno Inc. | Rubber compositions and uses thereof |
| CN109233028A (en) * | 2018-08-24 | 2019-01-18 | 浙江久运汽车零部件有限公司 | A kind of ageing-resistant rubber belt track of high bond strength and preparation method thereof |
| CN113512237A (en) * | 2021-06-04 | 2021-10-19 | 徐工集团工程机械股份有限公司 | High-strength tear-resistant rubber track |
Non-Patent Citations (3)
| Title |
|---|
| 焦高健;贾润礼;: "植物纤维填充橡胶复合材料的研究进展", 中国胶粘剂, no. 04, 30 April 2017 (2017-04-30), pages 55 - 59 * |
| 焦高健;贾润礼;: "植物纤维填充橡胶复合材料的研究进展", 中国胶粘剂, no. 04, pages 55 - 59 * |
| 赖兰喜;: "新型橡塑填充剂"油页岩灰"的应用", 无机盐工业, no. 02, pages 43 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115678135A (en) * | 2023-01-04 | 2023-02-03 | 中国万宝工程有限公司 | Rubber composition with vulcanization promoting effect |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115011002B (en) | 2024-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107540884B (en) | Method for bonding rubber and metal framework | |
| CN115011002A (en) | Vulcanization process for large-size rubber track | |
| CN101333306B (en) | Rubbering formula for aviation bead wire | |
| CN101200625A (en) | Formula of adhesive agent for aircraft tire renewing | |
| CN102167213A (en) | High-temperature-resistant conveyor belt | |
| CN105924869A (en) | Low-noise distribution box shell for electric power and preparing method of low-noise distribution box shell | |
| CN103806551B (en) | There is high-tensile exterior wall rock cotton board and moulding process thereof | |
| CN106594173A (en) | Cloth-wrapped transmission belt and preparation method thereof | |
| CN102766295A (en) | Clean air tube and preparation method thereof | |
| CN106928506A (en) | A kind of manufacture method of friction plate tree lace and friction plate | |
| CN111572116A (en) | High-resistance nano-coating V belt and preparation method thereof | |
| CN110734610A (en) | Micro-foaming glass wool groove sizing material and preparation method thereof, and vehicle sealing strip and preparation method thereof | |
| CN105542387B (en) | A kind of biological fiber enhancing friction material and preparation method thereof | |
| CN109354728A (en) | A kind of damping material and preparation method thereof | |
| CN101402273A (en) | Manufacturing method of carpet noise insulation pad composite-layer backing material for cars | |
| CN105605132B (en) | Automobile brake sheet | |
| CN113150403B (en) | Magnetorheological rubber composition and preparation method thereof | |
| CN108164949A (en) | A kind of fiberglass radome section bar of inorganic nano material modified toughening and preparation method thereof | |
| CN114657764A (en) | Aramid fiber treatment method | |
| CN107325414A (en) | High-performance high ferro EMUs rubber outer hood | |
| KR100313316B1 (en) | Surface treatment method of bladder which is used in vulcanizing process of tire | |
| CN116655988B (en) | Surface treatment method of vulcanized rubber, application of surface treatment method, rubber-polyurethane composite tire and preparation method of rubber-polyurethane composite tire | |
| CN115612191B (en) | High-temperature-resistant aging-resistant flame-retardant rubber material, rubberizing, high-temperature-resistant high-adhesion-resistant flame-retardant rubber conveyer belt and preparation method thereof | |
| CN107603088B (en) | A kind of preparation method of synchronous belt molding sulfuration capsule | |
| CN107177054A (en) | A kind of wear-resistant tyre new material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |