CN113667152A

CN113667152A - Method for producing radial tire

Info

Publication number: CN113667152A
Application number: CN202110979724.5A
Authority: CN
Inventors: 司倩倩; 陆梦琳; 陆晶
Original assignee: Cgn Dasheng Electron Accelerator Technology Co ltd
Current assignee: Cgn Dasheng Electron Accelerator Technology Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2021-11-19

Abstract

The invention discloses a preparation method of a radial tire, which comprises the following steps: feeding the base glue into a radiation chamber of an electron radiation device, wherein an electron accelerator in the electron radiation device can emit electron beams into the radiation chamber; controlling the electron accelerator to emit primary electron beam current to the base glue, wherein the energy of the electron beam current is 0.5MeV, the beam current intensity is 0-100mA, the passing speed is 0.5-10m/min, and the radiation dose is 0-40 kGy; the pressure in the radiation chamber is one atmosphere, the temperature is 0-100 ℃, and the radiation atmosphere is air atmosphere or inert gas atmosphere; producing a radial tire comprising the base rubber. In conclusion, the radial tire prepared by the method has the advantage of high durability.

Description

Method for producing radial tire

Technical Field

The invention relates to the technical field of tires, in particular to a preparation method of a radial tire.

Background

A radial tire is a common tire, and has the following advantages over other tires: (1) the ground contact area is large, the adhesion performance is good, the tread slippage is small, and the unit pressure to the ground is small, so the rolling resistance is small, and the service life is long; (2) the crown is thick and has a hard belted layer, so that the tyre is not easy to puncture; the deformation is small when the automobile runs, and the oil consumption can be reduced by 3% -8%; (3) because the number of layers of the cord fabric is small and the side wall is thin, the radial elasticity is large, the buffering performance is good, and the load capacity is large; (4) the heat dissipation performance is good, and the automobile can adapt to high-temperature and high-speed running. And thus are finding increasingly wider application.

Between the tread and the belt of a radial tire there is provided a base rubber which is able to perform the function of transition and adhesion. The amount of white carbon black in the base rubber is large, so that the rubber material is difficult to process; therefore, in the processing process, the manufacturing process is easy to be unstable, the physical index of the rubber material is further uneven, and the material is greatly changed in the extrusion and calendering processes; therefore, in the vulcanization process of the radial tire, the base rubber penetrates into the tread rubber due to the melting of the rubber compound and the pressure of the vulcanization bladder, so that the material distribution is not uniform, and the durability of the radial tire is affected.

Therefore, how to improve the durability of the radial tire becomes a problem to be solved.

Disclosure of Invention

In view of the above, the main objective of the present invention is to provide a method for manufacturing radial ply tires.

In order to achieve the purpose, the technical scheme of the invention is realized as follows: a method of manufacturing a radial tire, comprising the steps of: feeding the base glue into a radiation chamber of an electron radiation device, wherein an electron accelerator in the electron radiation device can emit electron beams into the radiation chamber; controlling the electron accelerator to emit primary electron beam current to the base glue, wherein the energy of the electron beam current is 0.5MeV, the beam current intensity is 0-100mA, the passing speed is 0.5-10m/min, and the radiation dose is 0-40 kGy; the pressure in the radiation chamber is one atmosphere, the temperature is 0-100 ℃, and the radiation atmosphere is air atmosphere or inert gas atmosphere; producing a radial tire comprising the base rubber.

As an improvement of the embodiment of the invention, the beam intensity of the electron beam is 0mA, the passing speed is 5m/min, and the radiation dose is 0 kGy.

As an improvement of the embodiment of the invention, the beam intensity of the electron beam is 8mA, the passing speed is 5m/min, and the radiation dose is 20 kGy.

As an improvement of the embodiment of the invention, the beam intensity of the electron beam is 16mA, the passing speed is 5m/min, and the radiation dose is 40 kGy.

As an improvement of the embodiment of the present invention, the electron radiation device further includes: a transfer device capable of transferring base glue into the irradiation chamber; the step of feeding the base glue into the radiation chamber of the electronic radiation device specifically comprises the following steps: placing the base glue on a conveyor, and controlling the conveyor to convey the base glue into an irradiation chamber of an electronic irradiation device.

As an improvement of the embodiment of the present invention, the conveying device is a conveyor belt.

The drug library provided by the embodiment of the invention has the following advantages: the embodiment of the invention discloses a preparation method of a radial tire, which comprises the following steps: feeding the base glue into a radiation chamber of an electron radiation device, wherein an electron accelerator in the electron radiation device can emit electron beams into the radiation chamber; controlling the electron accelerator to emit primary electron beam current to the base glue, wherein the energy of the electron beam current is 0.5MeV, the beam current intensity is 0-100mA, the passing speed is 0.5-10m/min, and the radiation dose is 0-40 kGy; the pressure in the radiation chamber is one atmosphere, the temperature is 0-100 ℃, and the radiation atmosphere is air atmosphere or inert gas atmosphere; producing a radial tire comprising the base rubber. In conclusion, the radial tire prepared by the method has the advantage of high durability.

Drawings

FIG. 1 is a schematic flow chart of a method for producing a radial tire according to an embodiment of the present invention;

fig. 2, 3 and 4 depict schematic diagrams of the effect of the preparation method.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. The present invention is not limited to the embodiment, and structural, methodological, or functional changes made by one of ordinary skill in the art according to the embodiment are included in the scope of the present invention.

The following description and the drawings sufficiently illustrate specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the embodiments herein includes the full ambit of the claims, as well as all available equivalents of the claims. The terms "first," "second," and the like, herein are used solely to distinguish one element from another without requiring or implying any actual such relationship or order between such elements. In practice, a first element can also be referred to as a second element, and vice versa. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a structure, apparatus, or device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such structure, apparatus, or device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a structure, device or apparatus that comprises the element. The embodiments 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 terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like herein, as used herein, are defined as orientations or positional relationships based on the orientation or positional relationship shown in the drawings, and are used for convenience in describing and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. In the description herein, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, and indirect connections via intermediary media, where the specific meaning of the terms is understood by those skilled in the art as appropriate.

Example 1

The embodiment of the invention provides a preparation method of a radial tire, which comprises the following steps as shown in figure 1:

step 101: feeding the base glue into a radiation chamber of an electron radiation device, wherein an electron accelerator in the electron radiation device can emit electron beams into the radiation chamber;

step 102: controlling the electron accelerator to emit primary electron beam current to the base glue, wherein the energy of the electron beam current is 0.5MeV, the beam current intensity is 0-100mA, the passing speed is 0.5-10m/min, and the radiation dose is 0-40 kGy; the pressure in the radiation chamber is one atmosphere, the temperature is 0-100 ℃, and the radiation atmosphere is air atmosphere or inert gas atmosphere; here, after the treatment of this step, a modified base gum is obtained. Here, MeV is mega electron volts, which is equal to the energy an electron gains when accelerated at a voltage of one mega volt; mA is milliampere; kGy means that 1kg of irradiated material absorbs 1000 joules of energy.

Step 103: producing a radial tire comprising the base rubber. Here, the modified base rubber has been produced, and thereafter, may be assembled with other materials and then subjected to bulk vulcanization to obtain a radial tire.

The principle of the preparation method in the embodiment of the invention is as follows: the electron beam generated by the electron accelerator bombards the base rubber, so that under the action of the electron beam, the linear polymer material in the base rubber can generate a three-dimensional reticular cross-linked polymer, the Mooney viscosity of the polymer is enhanced, the permeation and movement of rubber materials in the subsequent calendering process can be avoided, the accurate size of the radial tire can be greatly maintained, the material distribution is uniform and reasonable, and the durability of the radial tire is improved. After long-term practice of the inventors, it was found that the durability of the radial tire obtained by the preparation method was improved by at least 25% relative to the non-irradiated radial tire.

The electron accelerator can generate high-energy electron beams, the accelerated electron beams generated by the accelerator can form electron beams with a certain width under the action of a magnetic field, and finally the electron beams are led out from the scanning window and enter the radiation chamber to finish the irradiation of products. The electron beam generated by the electron accelerator is stable, the intensity is high, the bunching performance is good, the energy utilization rate is high, the irradiation dose can be quantitatively adjusted according to the requirement, and the dose can be adjusted only by adjusting the speed of the under-beam transmission device under the condition of not changing the parameters of the accelerator. Under the condition of not changing the existing process conditions, online embedding or offline irradiation can be adopted, the treatment capacity is large, and radiation hazard is not generated under the specified environment.

Here, in practice, a conveying device (e.g., a conveyor belt or the like) may be provided in the production plant, and the conveying device is capable of placing the radial tire only on the conveying device

In this embodiment, the electron radiation device further includes: a transfer device capable of transferring base glue into the irradiation chamber; the step of feeding the base glue into the radiation chamber of the electronic radiation device specifically comprises the following steps: placing the base glue on a conveyor, and controlling the conveyor to convey the base glue into an irradiation chamber of an electronic irradiation device.

In this embodiment, the conveying device is a conveyor belt.

Here, under the same conditions, the penetration depth of the electron beam can be controlled by adjusting the energy of the electron beam of the electron accelerator, and the penetration depth of the electron beam increases as the energy increases.

Here, as shown in fig. 2, the absorbed dose can be controlled by adjusting the beam current intensity and the transport speed of the device under the beam. As shown in fig. 3 and 4, the base rubber is modified to a different extent by different amounts of the absorbent, and as the amount of the absorbent increases, the mooney viscosity of the base rubber increases and the sulfur change time decreases.

Example 2, which is based on example 1, differs from example 1 in that: the beam intensity of the electron beam is 0mA, the passing speed is 5m/min, and the radiation dose is 0 kGy.

Example 3, which is based on example 1, differs from example 1 in that: the beam intensity of the electron beam is 8mA, the passing speed is 5m/min, and the radiation dose is 20 kGy.

Example 4, which is based on example 1, differs from example 1 in that: the beam intensity of the electron beam is 16mA, the passing speed is 5m/min, and the radiation dose is 40 kGy.

The following table describes the comparison of the experimental results of examples 2, 3 and 4

Examples	Radiation dose/kGy	Mooney viscosity	Durability
				Example 2	0	35.3	75H
Example 3	20	48.8	84H
				Example 4	40	65.4	94H

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. A method for manufacturing a radial tire, comprising the steps of:

feeding the base glue into a radiation chamber of an electron radiation device, wherein an electron accelerator in the electron radiation device can emit electron beams into the radiation chamber;

controlling the electron accelerator to emit primary electron beam current to the base glue, wherein the energy of the electron beam current is 0.5MeV, the beam current intensity is 0-100mA, the passing speed is 0.5-10m/min, and the radiation dose is 0-40 kGy; the pressure in the radiation chamber is one atmosphere, the temperature is 0-100 ℃, and the radiation atmosphere is air atmosphere or inert gas atmosphere;

producing a radial tire comprising the base rubber.

2. The method of claim 1, wherein:

the beam intensity of the electron beam is 0mA, the passing speed is 5m/min, and the radiation dose is 0 kGy.

3. The method of claim 1, wherein:

the beam intensity of the electron beam is 8mA, the passing speed is 5m/min, and the radiation dose is 20 kGy.

4. The method of claim 1, wherein:

the beam intensity of the electron beam is 16mA, the passing speed is 5m/min, and the radiation dose is 40 kGy.

5. The production method according to claim 1,

the electron radiation device further includes: a transfer device capable of transferring base glue into the irradiation chamber;

the step of feeding the base glue into the radiation chamber of the electronic radiation device specifically comprises the following steps: placing the base glue on a conveyor, and controlling the conveyor to convey the base glue into an irradiation chamber of an electronic irradiation device.

6. The production method according to claim 5,

the conveying device is a conveying belt.