CN113234263A - Fiber-containing primer of cloth-covered triangular belt and preparation process thereof - Google Patents
Fiber-containing primer of cloth-covered triangular belt and preparation process thereof Download PDFInfo
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- CN113234263A CN113234263A CN202110637619.3A CN202110637619A CN113234263A CN 113234263 A CN113234263 A CN 113234263A CN 202110637619 A CN202110637619 A CN 202110637619A CN 113234263 A CN113234263 A CN 113234263A
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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
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to the field of material improvement of cloth covered triangular belts, and particularly relates to a fiber-containing primer of a cloth covered triangular belt and a preparation process thereof, wherein the fiber-containing primer comprises the following components in parts by weight: 10-30 parts of natural rubber, 70-90 parts of butadiene styrene rubber, 1-3 parts of accelerator, 1-3.5 parts of vulcanizing agent, 1.0-3 parts of stearic acid, 4-8 parts of zinc oxide, 20-70 parts of carbon black, 0-20 parts of calcium carbonate/silicon aluminum carbon black, 2-4 parts of anti-aging agent, 1-8 parts of softener, 1-5 parts of phenolic resin/petroleum resin and 0-20 parts of short fiber. The invention is doped with short fibers such as aramid fiber or polyester and the like in a certain proportion to improve the rigidity and elasticity of the primer, so that both the thermal aging and the dynamic heat generation of the primer can be improved, the fatigue life of the V-belt using the primer is long, and the dynamic performance is greatly improved.
Description
Technical Field
The invention belongs to the field of material improvement of cloth covered triangular belts, and particularly relates to a fiber-containing primer of a cloth covered triangular belt and a preparation process thereof.
Background
The conventional common wrapping cloth V-belt has poor transverse rigidity and elasticity of the base rubber, is easy to generate heat aging cracking in a high-speed winding state, reduces the heat aging effect of the rubber if the elasticity of the rubber is improved by enhancing the crosslinking density, and improves the rigidity and the elasticity of the base rubber by doping a certain proportion of short fibers into the base rubber in order to reduce the contradiction between the elasticity and the heat aging of the rubber.
Disclosure of Invention
In order to solve the defects and shortcomings in the prior art, the invention provides the fiber-containing primer for the cloth-covered triangular belt and the preparation process thereof, wherein the fiber-containing primer is doped with aramid fiber or polyester and other short fibers in a certain proportion and is used for improving the rigidity and elasticity of the primer and improving the thermal aging and dynamic heat generation of the primer, so that the triangular belt using the primer has long fatigue life and greatly improved dynamic performance.
The technical scheme of the invention is as follows: the fiber-containing primer of the cloth-wrapping V-belt comprises the following components in parts by weight: 10-30 parts of natural rubber, 70-90 parts of butadiene styrene rubber, 1-3 parts of accelerator, 1-3.5 parts of vulcanizing agent, 1.0-3 parts of stearic acid, 4-8 parts of zinc oxide, 20-70 parts of carbon black, 0-20 parts of calcium carbonate/silicon aluminum carbon black, 2-4 parts of anti-aging agent, 1-8 parts of softener, 1-5 parts of phenolic resin/petroleum resin and 0-20 parts of short fiber.
The invention is doped with short fibers such as aramid fiber or polyester and the like in a certain proportion to improve the rigidity and elasticity of the primer, so that both the thermal aging and the dynamic heat generation of the primer can be improved, the fatigue life of the V-belt using the primer is long, and the dynamic performance is greatly improved.
Preferably, the fiber-containing primer of the cloth-covered V-belt consists of the following components in parts by weight: 30 parts of natural rubber NR, 150270 parts of styrene-butadiene rubber SBR, N32625 parts of carbon black, N55035 parts of carbon black, 10 parts of silicon-aluminum carbon black, 10 parts of short fibers, 5 parts of zinc oxide ZnO, 1.3 parts of stearic acid SA, 1.2 parts of accelerator CBS, 0.5 part of vulcanizing agent DM, 2.0 parts of vulcanizing agent S, 0.5 part of vulcanizing agent TMTD, 1.5 parts of anti-aging agent RD, 1.5 parts of anti-aging agent 4010NA, 4 parts of petroleum resin and 1.5 parts of softener aromatic oil. The technological parameters for obtaining the base glue by the formula are as follows: hardness 78 degrees, tensile strength 10.5MPA, elongation at break 215 percent, permanent deformation 10 percent and compression temperature rise of 55 ℃ 35.5 ℃.
Preferably, the fiber-containing primer of the cloth-covered V-belt consists of the following components in parts by weight: 30 parts of natural rubber NR, 150270 parts of styrene-butadiene rubber SBR, N32625 parts of carbon black, N55035 parts of carbon black, 10 parts of silicon-aluminum carbon black, 15 parts of short fibers, 5 parts of zinc oxide ZnO, 1.3 parts of stearic acid SA, 1.2 parts of accelerator CBS, 0.5 part of vulcanizing agent DM, 2.0 parts of vulcanizing agent S, 0.5 part of vulcanizing agent TMTD, 1.5 parts of anti-aging agent RD, 1.5 parts of anti-aging agent 4010NA, 4 parts of petroleum resin and 1.5 parts of softener aromatic oil. The technological parameters for obtaining the base glue by the formula are as follows: hardness of 81 degrees, tensile strength of 10.6MPA, elongation at break of 185 percent, permanent deformation of 8 percent and compression temperature rise of 28.9 ℃ at 55 ℃.
Preferably, the fiber-containing primer of the cloth-covered V-belt consists of the following components in parts by weight: 30 parts of natural rubber NR, 150270 parts of styrene-butadiene rubber SBR, N32625 parts of carbon black, N55035 parts of carbon black, 10 parts of silicon-aluminum carbon black, 20 parts of short fibers, 5 parts of zinc oxide ZnO, 1.3 parts of stearic acid SA, 1.2 parts of accelerator CBS, 0.5 part of vulcanizing agent DM, 2.0 parts of vulcanizing agent S, 0.5 part of vulcanizing agent TMTD, 1.5 parts of anti-aging agent RD, 1.5 parts of anti-aging agent 4010NA, 4 parts of petroleum resin and 1.5 parts of softener aromatic oil. The technological parameters for obtaining the base glue by the formula are as follows: hardness is 83 degrees, tensile strength is 9.8MPA, elongation at break is 156 percent, permanent deformation is 8 percent, and compression temperature rise at 55 ℃ is 29.5 ℃.
A preparation process of fiber-containing primer of a cloth-covered V-belt comprises the following steps:
1) the design of the main rubber material has low glass transition temperature of natural rubber, small hysteresis loss, low dynamic heat generation and good heat resistance of styrene butadiene rubber, and 10-30 parts of natural rubber is used for reducing dynamic temperature rise within a certain range of permanent deformation;
2) the vulcanization system is designed, the crosslinking density is properly increased, the dynamic modulus and the static modulus are increased, the hysteresis loss and the heat generation are reduced, but the ageing resistance is deteriorated when the crosslinking density is too high; the N-cyclohexyl-2-benzothiazole sulfonamide (CBS) and the 2, 2' -Dithiodibenzothiazyl (DM) are in different proportions, the sulfur dosage is reduced, and a part of a given vulcanizing agent is used, so that the thermal aging of the primer can be improved;
3) the reinforcing filling system is designed by adding proper fillers for reducing the cost, but the increase of the fillers can also lead to the increase of the temperature of the internal friction of the macromolecular chain, proper short fibers are used for replacing the fillers to improve the rigidity of the primer and reduce the dynamic temperature rise, and the reinforcing agent is selected from furnace black with low heat generation and is used together, so that the reinforcing effect can be achieved, and the dynamic compression heat generation can be reduced.
Preferably, the preparation process of the fiber-containing primer of the cloth-covered V-belt comprises the following specific preparation steps: firstly, putting natural rubber, butadiene styrene rubber and half of carbon black into an internal mixer for mixing for 50 seconds; secondly, adding the rest carbon black, the filler and the short fiber, and mixing for 40 seconds; thirdly, adding an activating agent, a promoter, an anti-aging agent and a plasticizer, mixing until the temperature reaches 130 ℃, discharging rubber, and sending the rubber to a first open mill; fourthly, when the glue temperature is reduced to 110 ℃, adding a vulcanizing agent on the first open mill, turning the glue, and discharging the glue to the second open mill for 55 seconds; and fifthly, mixing for 50 seconds on the second open mill and discharging to a third open mill for sheet discharging.
Detailed Description
The present invention is further illustrated in detail by the following examples, which are not intended to limit the scope of the invention.
The fiber-containing primer of the cloth-wrapping V-belt comprises the following components in parts by weight: 10-30 parts of natural rubber, 70-90 parts of butadiene styrene rubber, 1-3 parts of accelerator, 1-3.5 parts of vulcanizing agent, 1.0-3 parts of stearic acid, 4-8 parts of zinc oxide, 20-70 parts of carbon black, 0-20 parts of calcium carbonate/silicon aluminum carbon black, 2-4 parts of anti-aging agent, 1-8 parts of softener, 1-5 parts of phenolic resin/petroleum resin and 0-20 parts of short fiber.
The preparation process of the fiber-containing primer of the cloth-covered V-belt comprises the following steps:
1. design of main rubber material. The natural rubber has low glass transition temperature, small hysteresis loss, low dynamic heat generation and good heat resistance of the butadiene styrene rubber, and 10-30 parts of natural rubber is used for reducing dynamic temperature rise within a certain range of permanent deformation.
2. And (4) designing a vulcanization system. The crosslinking density is properly increased, the dynamic modulus and the static modulus are increased, the hysteresis loss and the heat generation are reduced, but the ageing resistance is deteriorated when the crosslinking density is too high; the different proportions of the N-cyclohexyl-2-benzothiazole sulfonamide (CBS) and the 2, 2' -Dithiodibenzothiazyl (DM) reduce the sulfur dosage and use part of the given vulcanizing agent, thus improving the thermal aging of the primer.
3. And (4) designing a reinforcing filling system. In the actual production, proper filler is added for reducing the cost, but the increase of the filler can also cause the increase of the internal friction temperature rise of a macromolecular chain, a proper amount of short fiber is used for replacing the filler to improve the rigidity of the primer and reduce the dynamic temperature rise, and the reinforcing agent is selected from furnace black with low heat generation to be used simultaneously, so that the effects of reinforcing and reducing the dynamic compression heat generation can be achieved.
The preparation process of the invention is mainly innovated in the batching process, so the batching process is mainly described.
The following examples were obtained by different formulations according to the preparation method described above.
Example 1
The fiber-containing primer of the cloth-wrapping V-belt comprises the following components in parts by weight: 30 parts of NR, 150270 parts of SBR, 32625 parts of N55035 parts of silicon-aluminum carbon black, 10 parts of short fibers, 5 parts of ZnO, 1.3 parts of SA, 1.2 parts of CBS, 0.5 part of DM, 2.0 parts of S, 0.5 part of TMTD, 1.5 parts of antioxidant RD, 1.5 parts of antioxidant 4010NA, 4 parts of petroleum resin and 1.5 parts of aromatic oil. The tested example 1 performance was as follows:
example 2
The fiber-containing primer of the cloth-wrapping V-belt comprises the following components in parts by weight: 30 parts of NR, 150270 parts of SBR, 32625 parts of N55035 parts of silicon-aluminum carbon black, 10 parts of short fiber, 5 parts of ZnO, 1.3 parts of SA, 1.2 parts of CBS, 0.5 part of DM, 2.0 parts of S, 0.5 part of TMTD, 1.5 parts of antioxidant RD, 1.5 parts of antioxidant 4010NA, 4 parts of petroleum resin and 1.5 parts of aromatic oil.
The tested example 2 performance was as follows:
example 3
The fiber-containing primer of the cloth-wrapping V-belt comprises the following components in parts by weight: 30 parts of NR, 150270 parts of SBR, 32625 parts of N55035 parts of silicon-aluminum carbon black, 10 parts of short fiber, 5 parts of ZnO, 1.3 parts of SA, 1.2 parts of CBS, 0.5 part of DM, 2.0 parts of S, 0.5 part of TMTD, 1.5 parts of antioxidant RD, 1.5 parts of antioxidant 4010NA, 4 parts of petroleum resin and 1.5 parts of aromatic oil. The tested example 3 properties were as follows:
the best performance of the formulation of example 2 was found by comparison, with examples 1 and 3 being different in the amount of short fibers.
The specific preparation method of the invention comprises the steps of firstly putting the natural rubber, the butadiene styrene rubber and half of the carbon black into an internal mixer for mixing for 50 seconds; secondly, adding the rest carbon black, the filler and the short fiber, and mixing for 40 seconds; thirdly, adding an activating agent, an accelerating agent, an anti-aging agent and a plasticizer, mixing until the temperature reaches 130 ℃, and discharging rubber to a first open mill; fourthly, when the glue temperature is reduced to 110 ℃, adding a vulcanizing agent on the first open mill, turning the glue, and discharging the glue to the second open mill for 55 seconds; and fifthly, mixing for 50 seconds on the second open mill and discharging to a third open mill for sheet discharging.
The dynamic temperature rise of the primer prepared by the method is less than 30 ℃ under the condition of 55 ℃, the fatigue life of the V-belt is not less than 400h according to GB/T15328 'common V-belt fatigue test method no-torque method', and the dynamic performance is greatly improved.
Claims (9)
1. The utility model provides a infusorial fibre primer that contains of infusorial cloth V belt which characterized in that: the composition comprises the following components in parts by weight: 10-30 parts of natural rubber, 70-90 parts of butadiene styrene rubber, 1-3 parts of accelerator, 1-3.5 parts of vulcanizing agent, 1.0-3 parts of stearic acid, 4-8 parts of zinc oxide, 20-70 parts of carbon black, 0-20 parts of calcium carbonate/silicon aluminum carbon black, 2-4 parts of anti-aging agent, 1-8 parts of softener, 1-5 parts of phenolic resin/petroleum resin and 0-20 parts of short fiber.
2. The fiber-containing primer for a cloth-covered V-belt according to claim 1, wherein: the composition comprises the following components in parts by weight: 30 parts of natural rubber NR, 150270 parts of styrene-butadiene rubber SBR, N32625 parts of carbon black, N55035 parts of carbon black, 10 parts of silicon-aluminum carbon black, 10 parts of short fibers, 5 parts of zinc oxide ZnO, 1.3 parts of stearic acid SA, 1.2 parts of accelerator CBS, 0.5 part of vulcanizing agent DM, 2.0 parts of vulcanizing agent S, 0.5 part of vulcanizing agent TMTD, 1.5 parts of anti-aging agent RD, 1.5 parts of anti-aging agent 4010NA, 4 parts of petroleum resin and 1.5 parts of softener aromatic oil.
3. The fiber-containing primer for a cloth-covered V-belt according to claim 2, wherein: the technological parameters for obtaining the base glue by the formula are as follows: hardness 78 degrees, tensile strength 10.5MPA, elongation at break 215 percent, permanent deformation 10 percent and compression temperature rise of 55 ℃ 35.5 ℃.
4. The fiber-containing primer for a cloth-covered V-belt according to claim 1, wherein: the composition comprises the following components in parts by weight: 30 parts of natural rubber NR, 150270 parts of styrene-butadiene rubber SBR, N32625 parts of carbon black, N55035 parts of carbon black, 10 parts of silicon-aluminum carbon black, 15 parts of short fibers, 5 parts of zinc oxide ZnO, 1.3 parts of stearic acid SA, 1.2 parts of accelerator CBS, 0.5 part of vulcanizing agent DM, 2.0 parts of vulcanizing agent S, 0.5 part of vulcanizing agent TMTD, 1.5 parts of anti-aging agent RD, 1.5 parts of anti-aging agent 4010NA, 4 parts of petroleum resin and 1.5 parts of softener aromatic oil.
5. The fiber-containing primer for a cloth-covered V-belt according to claim 4, wherein: the technological parameters for obtaining the base glue by the formula are as follows: hardness of 81 degrees, tensile strength of 10.6MPA, elongation at break of 185 percent, permanent deformation of 8 percent and compression temperature rise of 28.9 ℃ at 55 ℃.
6. The fiber-containing primer for a cloth-covered V-belt according to claim 1, wherein: the composition comprises the following components in parts by weight: 30 parts of natural rubber NR, 150270 parts of styrene-butadiene rubber SBR, N32625 parts of carbon black, N55035 parts of carbon black, 10 parts of silicon-aluminum carbon black, 20 parts of short fibers, 5 parts of zinc oxide ZnO, 1.3 parts of stearic acid SA, 1.2 parts of accelerator CBS, 0.5 part of vulcanizing agent DM, 2.0 parts of vulcanizing agent S, 0.5 part of vulcanizing agent TMTD, 1.5 parts of anti-aging agent RD, 1.5 parts of anti-aging agent 4010NA, 4 parts of petroleum resin and 1.5 parts of softener aromatic oil.
7. The fiber-containing primer for a cloth-covered V-belt according to claim 4, wherein: the technological parameters for obtaining the base glue by the formula are as follows: hardness is 83 degrees, tensile strength is 9.8MPA, elongation at break is 156 percent, permanent deformation is 8 percent, and compression temperature rise at 55 ℃ is 29.5 ℃.
8. A process for preparing a fiber-containing primer for a cloth-covered V-belt as defined in claim 1, wherein: the method comprises the following steps:
1) the design of the main rubber material has low glass transition temperature of natural rubber, small hysteresis loss, low dynamic heat generation and good heat resistance of styrene butadiene rubber, and 10-30 parts of natural rubber is used for reducing dynamic temperature rise within a certain range of permanent deformation;
2) the vulcanization system is designed, the crosslinking density is properly increased, the dynamic modulus and the static modulus are increased, the hysteresis loss and the heat generation are reduced, but the ageing resistance is deteriorated when the crosslinking density is too high; the N-cyclohexyl-2-benzothiazole sulfonamide (CBS) and the 2, 2' -Dithiodibenzothiazyl (DM) are in different proportions, the sulfur dosage is reduced, and a part of a given vulcanizing agent is used, so that the thermal aging of the primer can be improved;
3) the reinforcing filling system is designed by adding proper fillers for reducing the cost, but the increase of the fillers can also lead to the increase of the temperature of the internal friction of the macromolecular chain, proper short fibers are used for replacing the fillers to improve the rigidity of the primer and reduce the dynamic temperature rise, and the reinforcing agent is selected from furnace black with low heat generation and is used together, so that the reinforcing effect can be achieved, and the dynamic compression heat generation can be reduced.
9. The process for preparing the fiber-containing primer for the cloth-covered V-belt according to claim 8, wherein the step of preparing the fiber-containing primer comprises the following steps: the preparation method comprises the following specific steps: firstly, putting natural rubber, butadiene styrene rubber and half of carbon black into an internal mixer for mixing for 50 seconds; secondly, adding the rest carbon black, the filler and the short fiber, and mixing for 40 seconds; thirdly, adding an activating agent, a promoter, an anti-aging agent and a plasticizer, mixing until the temperature reaches 130 ℃, discharging rubber, and sending the rubber to a first open mill; fourthly, when the glue temperature is reduced to 110 ℃, adding a vulcanizing agent on the first open mill, turning the glue, and discharging the glue to the second open mill for 55 seconds; and fifthly, mixing for 50 seconds on the second open mill and discharging to a third open mill for sheet discharging.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110637619.3A CN113234263A (en) | 2021-06-08 | 2021-06-08 | Fiber-containing primer of cloth-covered triangular belt and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110637619.3A CN113234263A (en) | 2021-06-08 | 2021-06-08 | Fiber-containing primer of cloth-covered triangular belt and preparation process thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104194079A (en) * | 2014-09-25 | 2014-12-10 | 马鞍山宏力橡胶制品有限公司 | Composite seal ring and manufacturing process thereof |
| CN107266751A (en) * | 2017-07-14 | 2017-10-20 | 浙江保尔力胶带有限公司 | The production technology of oblique tooth-shaped edge-cut V-belt |
| CN109723758A (en) * | 2019-01-16 | 2019-05-07 | 江西省科学院应用化学研究所 | A kind of high-performance V-belt and preparation method thereof |
| CN111732762A (en) * | 2020-05-29 | 2020-10-02 | 浙江保尔力胶带有限公司 | Formula capable of reducing dynamic heat generation of triangular belt primer |
| CN213108505U (en) * | 2020-07-20 | 2021-05-04 | 浙江保尔力橡塑股份有限公司 | Production equipment capable of reducing dynamic heat generation triangular belt base glue |
-
2021
- 2021-06-08 CN CN202110637619.3A patent/CN113234263A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104194079A (en) * | 2014-09-25 | 2014-12-10 | 马鞍山宏力橡胶制品有限公司 | Composite seal ring and manufacturing process thereof |
| CN107266751A (en) * | 2017-07-14 | 2017-10-20 | 浙江保尔力胶带有限公司 | The production technology of oblique tooth-shaped edge-cut V-belt |
| CN109723758A (en) * | 2019-01-16 | 2019-05-07 | 江西省科学院应用化学研究所 | A kind of high-performance V-belt and preparation method thereof |
| CN111732762A (en) * | 2020-05-29 | 2020-10-02 | 浙江保尔力胶带有限公司 | Formula capable of reducing dynamic heat generation of triangular belt primer |
| CN213108505U (en) * | 2020-07-20 | 2021-05-04 | 浙江保尔力橡塑股份有限公司 | Production equipment capable of reducing dynamic heat generation triangular belt base glue |
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Application publication date: 20210810 |