CN1944023A - Irradiation crosslink pretreating method for radial tire structure material - Google Patents
Irradiation crosslink pretreating method for radial tire structure material Download PDFInfo
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- CN1944023A CN1944023A CN 200610140583 CN200610140583A CN1944023A CN 1944023 A CN1944023 A CN 1944023A CN 200610140583 CN200610140583 CN 200610140583 CN 200610140583 A CN200610140583 A CN 200610140583A CN 1944023 A CN1944023 A CN 1944023A
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Abstract
The irradiation cross-linking pre-treatment method for structure material of radial tire features that the structure material belt of 0.5-2.5 mm thickness for tire foundation, crown belt, etc is made to pass through the scanning window of electron accelerator at the speed of 1-40 m/min for being irradiated with electron beam of 1-100 mA to result in absorption dosage of 20-60 kgy. The said irradiation cross-linking pre-treatment method can raise the tensile strength, stability, ageing resistance, etc of the material, and may be also used for treating other material of radial tire.
Description
Technical field
The present invention relates to the radiation application technical field, be specifically related to the cross-linking radiation preprocess method of a kind of radial-ply tyre tire construction material (comprising carcass, band, belt, inner liner etc.).
Background technology
At present in the domestic tire manufacture craft, after rubber master batch forms bands such as carcass, band, belt, inner liner through heat refining, compressing tablet, promptly enter heat cure, moulding process, make the radial-ply tyre tire by certain technological requirement by wearing layer, band, belt, carcass, inner liner etc.Along with society and expanding economy, the demand of tire increases day by day, and the raw material-natural rubber resource of making tire is limited, cost also rises steadily, and how to reduce the raw material use amount, improves the tire yield rate, reduces production costs and energy resource consumption is the problem that presses for solution.
External in the manufacture craft process of tire, introduced radiation processing technology, but its irradiance method, technical process and technic index do not have can be for reference technical data.
Summary of the invention
The objective of the invention is to, provide the cross-linking radiation preprocess method of a kind of radial-ply tyre tire construction material (comprising bands such as carcass, band, belt, inner liner), this method can effectively improve tire intensity, performance such as anti-aging, reduce the consumption of natural rubber in the band, improve elastomeric ratio, reduce production costs.
The objective of the invention is to be achieved through the following technical solutions:
A kind of cross-linking radiation preprocess method of radial-ply tyre tire construction material is characterized in that:
1. said tire construction material is the band of carcass or band or belt or inner liner, and the thickness of band is the 0.5-2.5 millimeter,
2. said band under the scanning window of electron accelerator by carrying out irradiation, the transfer rate of band be 1-40 rice/minute,
3. the line of electron accelerator is the 1-100 milliampere, and the absorbed dose of radiation of band is the 20-60 kilogray.
The band of the said carcass of the present invention or band or belt or inner liner comprises that by carrying out irradiation the one or both sides to band carry out irradiation under the scanning window of electron accelerator.
The present invention carries out on said band two sides to carcass or band or belt or inner liner irradiation and can adopt two electron accelerators that are separately positioned on the band two sides to carry out irradiation.
The present invention carries out on said band two sides to carcass or band or belt or inner liner after irradiation also can adopt an electron accelerator that the one side of band is carried out irradiation, and the another side to band carries out irradiation again.
The tire composition material, comprise bands such as carcass, band, belt, inner liner, after the cross-linking radiation preliminary treatment, improve its tensile strength, under the prerequisite that guarantees product performance index, can reduce thickness, reduce the consumption of natural rubber in the band, improve elastomeric ratio, reach the purpose that saves material, and the main performance index of finished product remains unchanged still or increases; And through the tire composition material behind the irradiation, in the production technology afterwards, the heat cure processing time shortens, and when reducing production costs, has reduced energy resource consumption.Irradiance method of the present invention can significantly improve the stability of tire composition material, improves tire intensity, performance such as anti-aging; It is fast that method of the present invention also has presulfurization speed, can accurately control the advantage of state of cure (vulcanization), and wherein, accurately controlling state of cure (vulcanization) is that other vulcanization process such as heat cure are not accomplished.
The specific embodiment
Below in conjunction with specific embodiment the present invention is described in further detail.
The said radial-ply tyre tire of the present invention composition material is the band of carcass or band or belt or inner liner, and the thickness of band is the 0.5-2.5 millimeter; Band under the scanning window of electron accelerator by carrying out irradiation, the transfer rate of band be 1-40 rice/minute; Electron accelerator can adopt low-energy electronic accelerator, both can satisfy the irradiation technique requirement, and help security protection again, the line of accelerator can be chosen as the 1-100 milliampere, the absorbed dose of radiation of band is controlled to be the 20-60 kilogray, can realize the pretreated purpose of cross-linking radiation.
Method of the present invention is to carcass or bands such as band or belt or inner liner after the process calendering, carrying out the irradiation presulfurization before heat cure, moulding earlier handles, with the band of carcass or band or belt or inner liner under the scanning window of electron accelerator by carrying out irradiation, when absorbed dose of radiation is the 20-60 kilogray, can obviously improve every main performance index of carcass or band or belt or inner liner, particularly improve its tensile strength; During irradiation, 20,25,30,35,40,45,50,55,60 kilograys all are the absorbed dose of radiation embodiment that can select; Absorbed dose of radiation during irradiation can be measured according to prior art, for example adopts known CTA film dosimeter to carry out actual measurement, the exposure time the when time that reaches 20～60 kilograys is decided to be technological operation.The beam energy of electron accelerator can be chosen as 0.5-1MeV (million electro-volt) during irradiation, beam intensity can be chosen as 1-100mA (milliampere), wherein, 1,3,7,10,20,30,40,50,60,70,80,90,100mA is the line embodiment that can select; The electron beam scanning width is a 1.6-1.8 rice, and this width is greater than by the width of bands such as irradiation carcass.By the thickness of bands such as irradiation carcass, the requirement that width depends on tyre production technology, for example the thickness of band can be 0.5-2.5 millimeter (this thickness can guarantee the main performance index behind the band radiation vulcanization), wherein, 0.5,0.8,1.0,1.5,1.8,2.0,2.2,2.5 millimeter all be the thickness of strip that can select for use, strip width is not greater than the width of electron beam scanning; During irradiation the transfer rate of band can be chosen as 1-40 rice/minute, wherein, 1,3,5,7,10,20,30,40 meter/minute all is the transfer rate that can select.
Below be specific embodiments of the invention:
When the kind of band and thickness not simultaneously, can adjust beam energy by prior art, to obtain irradiation effect preferably.For the band of certain thickness (or certain mass thickness), transfer rate faster, bigger absorbed dose of radiation should be selected bigger electron accelerator line; Slower transfer rate, less absorbed dose of radiation can be selected less electron accelerator line.Obviously, select suitable transfer rate, less absorbed dose of radiation, less electron accelerator line,, help reducing energy consumption, reduce production costs ensureing under the prerequisite that production is carried out smoothly.
Embodiment 1
1. the thickness of carcass or band or belt or inner liner band is 0.8 millimeter,
2. band under the scanning window of electron accelerator by the time speed be 5 meters/minute,
3. the line of electron accelerator is 10 milliamperes, and the absorbed dose of radiation of band is 25 kilograys.
Embodiment 2
1. the thickness of carcass or band or belt or inner liner band is 0.8 millimeter,
2. band under the scanning window of electron accelerator by the time speed be 15 meters/minute,
3. the line of electron accelerator is 30 milliamperes, and the absorbed dose of radiation of band is 25 kilograys.
Embodiment 3
1. the thickness of carcass or band or belt or inner liner band is 1.0 millimeters,
2. band under the scanning window of electron accelerator by the time speed be 30 meters/minute,
3. the line of electron accelerator is 90 milliamperes, and the absorbed dose of radiation of band is 35 kilograys.
Embodiment 4
1. the thickness of carcass or band or belt or inner liner band is 1.0 millimeters,
2. band under the scanning window of electron accelerator by the time speed be 40 meters/minute,
3. the line of electron accelerator is 100 milliamperes, and the absorbed dose of radiation of band is 30 kilograys.
Embodiment 5
1. the thickness of carcass or band or belt or inner liner band is 2.0 millimeters,
2. band under the scanning window of electron accelerator by the time speed be 20 meters/minute,
3. the line of electron accelerator is 60 milliamperes, and the absorbed dose of radiation of band is 35 kilograys.
Embodiment 6
1. the thickness of carcass or band or belt or inner liner band is 2.0 millimeters,
2. band under the scanning window of electron accelerator by the time speed be 10 meters/minute,
3. the line of electron accelerator is 50 milliamperes, and the absorbed dose of radiation of band is 60 kilograys.
Radiation vulanization is different with the temperature of conventional sulfuration, and radiation vulanization occurs in normal temperature, and conventional sulfuration occurs in high temperature.For the crystallization natural rubber, its form depends on temperature.Natural rubber exists crystal region and unformed area at normal temperatures, and crosslinking with radiation occurs in unformed area, that is to say, its C-C cross-bond concentrates on unformed area.When high temperature, natural rubber is in unformed state fully, therefore therefore crosslinked strong random being distributed in the whole rubber use that method of the present invention is crosslinked under 20-30 degree centigrade normal temperature only to need 3 seconds, and need 10 minutes at least at 150 degrees centigrade or the crosslinked of higher temperature.
By the hot strength of bands such as the carcass of the inventive method irradiation, the inner liner about 10-25% of raising of irradiation more not, tack is relatively good, and curingprocess rate is vulcanized the after-drawing performance and obviously improved than very fast.Irradiance method of the present invention can significantly improve green strength and stable fabric cord, all-steel cord or pure rubber assembly.And method of the present invention to have presulfurization speed fast, can accurately control the advantage of state of cure (vulcanization), particularly accurately controlling state of cure (vulcanization) is that other vulcanization process are not accomplished.
Green strength behind the method irradiation of the present invention increases and increases along with absorbed dose of radiation, cord in the carcass is subjected to displacement in moulding and sulfidation with the situation of naked wire and also therefore significantly reduces, improved the yield rate of tire, recovery rate also increases and increases along with absorbed dose of radiation simultaneously, be that the rubber dimensional stability increases, make the raw material consumption reduce by the method that reduces carcass thickness again, thickness can reduce 10-25% than original thickness, not only effectively reduce production cost, and because the weight saving of tire, elasticity increases, the automobile ride comfort can be saved fuel oil when travelling.
Method of the present invention can also be used for the presulfurization of other composition material of radial-ply tyre tire, as wearing layer, sidewall etc.
Claims (4)
1. the cross-linking radiation preprocess method of a radial-ply tyre tire construction material is characterized in that:
1. said tire construction material is the band of carcass or band or belt or inner liner, and the thickness of band is the 0.5-2.5 millimeter,
2. said band under the scanning window of electron accelerator by carrying out irradiation, the transfer rate of band be 1-40 rice/minute,
3. the line of electron accelerator is the 1-100 milliampere, and the absorbed dose of radiation of band is the 20-60 kilogray.
2. the cross-linking radiation preprocess method of radial-ply tyre tire construction material as claimed in claim 1 is characterized in that the band of said carcass or band or belt or inner liner comprises that by carrying out irradiation the one or both sides to band carry out irradiation under the scanning window of electron accelerator.
3. the cross-linking radiation preprocess method of radial-ply tyre tire construction material as claimed in claim 2 is characterized in that it is to adopt two electron accelerators that are separately positioned on the band two sides to carry out irradiation that irradiation is carried out on said band two sides to carcass or band or belt or inner liner.
4, the cross-linking radiation preprocess method of radial-ply tyre tire construction material as claimed in claim 2, it is characterized in that it is that the another side to band carries out irradiation again after adopting an electron accelerator that the one side of band is carried out irradiation that irradiation is carried out on said band two sides to carcass or band or belt or inner liner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101405833A CN100503193C (en) | 2006-10-18 | 2006-10-18 | Irradiation crosslink pretreating method for radial tire structure material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101405833A CN100503193C (en) | 2006-10-18 | 2006-10-18 | Irradiation crosslink pretreating method for radial tire structure material |
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| Publication Number | Publication Date |
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| CN1944023A true CN1944023A (en) | 2007-04-11 |
| CN100503193C CN100503193C (en) | 2009-06-24 |
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| CNB2006101405833A Expired - Fee Related CN100503193C (en) | 2006-10-18 | 2006-10-18 | Irradiation crosslink pretreating method for radial tire structure material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092111A (en) * | 2009-12-09 | 2011-06-15 | 软控股份有限公司 | Tire rubber sheet electron radiation crosslinking pretreatment device and method |
| CN102092113A (en) * | 2009-12-09 | 2011-06-15 | 软控股份有限公司 | Device and method for acquiring electron irradiation images |
| CN101613493B (en) * | 2009-07-31 | 2011-07-20 | 北京市射线应用研究中心 | Meridian tyre belted layer component and preparation technology thereof |
| CN102673055A (en) * | 2012-04-27 | 2012-09-19 | 北京市射线应用研究中心 | Thinned lining airtight layer component for radial tire |
| CN114813474A (en) * | 2022-04-06 | 2022-07-29 | 中策橡胶集团股份有限公司 | Method and equipment for pre-crosslinking of electron irradiation carcass cord fabric based on Mooney viscosity test |
-
2006
- 2006-10-18 CN CNB2006101405833A patent/CN100503193C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613493B (en) * | 2009-07-31 | 2011-07-20 | 北京市射线应用研究中心 | Meridian tyre belted layer component and preparation technology thereof |
| CN102092111A (en) * | 2009-12-09 | 2011-06-15 | 软控股份有限公司 | Tire rubber sheet electron radiation crosslinking pretreatment device and method |
| CN102092113A (en) * | 2009-12-09 | 2011-06-15 | 软控股份有限公司 | Device and method for acquiring electron irradiation images |
| CN102092111B (en) * | 2009-12-09 | 2013-06-05 | 软控股份有限公司 | Tire rubber sheet electron radiation crosslinking pretreatment device and method |
| CN102092113B (en) * | 2009-12-09 | 2013-11-20 | 软控股份有限公司 | Device and method for acquiring electron irradiation images |
| CN102673055A (en) * | 2012-04-27 | 2012-09-19 | 北京市射线应用研究中心 | Thinned lining airtight layer component for radial tire |
| CN114813474A (en) * | 2022-04-06 | 2022-07-29 | 中策橡胶集团股份有限公司 | Method and equipment for pre-crosslinking of electron irradiation carcass cord fabric based on Mooney viscosity test |
| CN114813474B (en) * | 2022-04-06 | 2023-08-08 | 中策橡胶集团股份有限公司 | Method and equipment for pre-crosslinking of electron irradiation carcass cord fabric based on Mooney viscosity test |
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| Publication number | Publication date |
|---|---|
| CN100503193C (en) | 2009-06-24 |
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Owner name: BEIJING SANQIANG HELI RADIATION ENGINEERING TECHNO Free format text: FORMER OWNER: WANG CHUANZHEN Effective date: 20140116 |
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Free format text: CORRECT: ADDRESS; FROM: 100037 HAIDIAN, BEIJING TO: 100048 HAIDIAN, BEIJING |
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Effective date of registration: 20140116 Address after: 100048, Beijing, Haidian District, West Third Ring Road, No. 105, building B-609 Patentee after: BEIJING SANQIANG HELI RADIATION ENGINEERING TECHNOLOGY CO., LTD. Address before: 100037, room 609, building B, building 105, West Third Ring Road, Haidian District, Beijing Patentee before: Wang Chuanzhen |
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Granted publication date: 20090624 Termination date: 20171018 |