CN103085186B - A kind of inner liner manufacturing technology for 50 specification passenger vehicle tyres - Google Patents
A kind of inner liner manufacturing technology for 50 specification passenger vehicle tyres Download PDFInfo
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- CN103085186B CN103085186B CN201210595006.9A CN201210595006A CN103085186B CN 103085186 B CN103085186 B CN 103085186B CN 201210595006 A CN201210595006 A CN 201210595006A CN 103085186 B CN103085186 B CN 103085186B
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Abstract
The invention provides a kind of manufacture method of tyre airtight layer, the first step, diene elastomer is dropped in meshing mixer, mix under the first predetermined condition; Second step, drops into carbon black, modified calcium carbonate and other auxiliary agents in meshing mixer, processes, draw off sizing material to twin-screw extrusion tablet press under the second predetermined condition, forms the first rubber master batch after cooling; 3rd step, by the first rubber master batch in meshing mixer, processes, obtains the second rubber master batch under the 3rd predetermined condition; 4th step, joins in banbury by the second rubber master batch, promoter, sulphur and zinc oxide, processes, draw off sizing material under the 4th predetermined condition, and bottom sheet is cooled to the making that room temperature completes tread rubber.This inner liner is used for the manufacture of 50 specification passenger vehicle tyres.
Description
Technical field
The present invention relates to 50 specification passenger vehicle tyres, relate to a kind of manufacture method for 50 specification passenger vehicle tyre inner liners more specifically, especially a kind of manufacture method with the tyre airtight layer of high-air-tightness about being made up of inorganic filler calcium carbonate.
Background technology
Along with the development of auto industry, passenger car more and more becomes the vehicles indispensable in people's lives.Tire is the very important parts of of vehicle safety travel, its severity of consequence of the accident caused due to the reason of tire is self-evident, the quality of passenger vehicle tyre is directly connected to the life security of the driving safety of vehicle and driver, passenger, and tire pressure is the life of tire, so keep tire pressure to be very important in standard-required.
Modern passenger cars tire technology develops into tubeless tyre; and the inner liner that tubeless tyre is actually by having low-permeable forms; this inner liner is positioned at the inner side of tire; can keep the blowing pressure prevent gas leakage make tire flat fall; some important areas of inside tires can be protected as carcass and belt etc.; prevent oxygen and water from entering inner to they erosions, thus ensure the durability of tire.At present, the inner liner by being made up of halogenated butyl rubber and other elastomer compositions achieves this protection of tire inner surface.
Therefore, improve the air-tightness of inner liner material further, the long-time stability keeping tire pressure are problems that researcher studies.
Summary of the invention
The present invention aims to provide a kind of manufacture method for 50 specification passenger vehicle tyre inner liners, can be produced the inner liner material with high-air-tightness by the method, to produce low cost, high-quality tire product, meets the demand of various production occasion.
For reaching this purpose, the present invention adds half reinforcing filler in elastomer---calcium carbonate, and this calcium carbonate is modified calcium carbonate, and it consists of a part and is made up of aliphatic acid, coupling agent and crosslinking agent etc.; Another part take calcium carbonate as carrier, by toughening modifying dilution agent, thus makes the elastomer that the coated one deck of high-activity inorganic filling surface is thin, is easier to and the coupling of rubber macromolecule and grafting.Modified calcium carbonate, compared with ordinary calcium carbonate, can improve product ageing-resistant performance, reduces compression permanent deformation, improves dynamically flexibility, and its good processability, nonhygroscopic simultaneously.
The present invention adopts modified calcium carbonate material to join in inner liner sizing material, thus reaches in raising that inner liner is bubble-tight reduces costs simultaneously.
The invention provides a kind of manufacture method of tire tread inner liner: it is characterized in that
The first step, drops into diene elastomer in meshing mixer, mixes under the first predetermined condition;
Second step, drops into carbon black, modified calcium carbonate and other auxiliary agents in meshing mixer, processes, draw off sizing material to twin-screw extrusion tablet press under the second predetermined condition, forms the first rubber master batch after cooling;
3rd step, by the first rubber master batch in meshing mixer, processes, obtains the second rubber master batch under the 3rd predetermined condition;
4th step, joins in meshing mixer by the second rubber master batch, promoter, sulphur and zinc oxide, processes, draw off sizing material under the 4th predetermined condition, and bottom sheet is cooled to the making that room temperature completes tread rubber.
Wherein, it is 45rpm that described first predetermined condition comprises rotor speed of banbury mixer, and ram piston pressure is 6bar, and cooling water of banbury mixer temperature is 30-40 DEG C.
Wherein, described second predetermined condition comprises banbury internal sizes temperature when reaching 120 DEG C, carries bolt and rotor speed is dropped to 30rpm and injects environment protection oil TDAE simultaneously, the maximum temperature of pressure bolt to 145-165 DEG C.
Wherein, it is 20rpm that described 3rd predetermined condition comprises banbury rotating speed, and ram piston pressure is 5bar, and cooling water of banbury mixer temperature is 30-40 DEG C.
Wherein, described 4th predetermined condition comprises dropping into after banbury presses bolt 50 seconds, carries bolt and presses bolt to refine 40 seconds again, and the maximum temperature that sizing material temperature reaches 100-110 DEG C draws off.
Wherein, diene elastomer is selected from polybutadiene rubber, natural rubber, breast poly-SBR rubber, butadiene copolymer or these elastomeric mixtures.
Wherein, described calcium carbonate is modified calcium carbonate, and its part is made up of aliphatic acid, coupling agent and crosslinking agent etc.; Another part take calcium carbonate as carrier, by toughening modifying dilution agent, thus makes the elastomer that the coated one deck of high-activity inorganic filling surface is thin, is easier to and the coupling of rubber macromolecule and grafting.
Wherein, this modified calcium carbonate consumption is 45phr.
A kind of tyre airtight layer, it adopts method recited above to make.
Detailed description of the invention
For the ease of understanding the present invention, below embodiments of the invention being described, it will be appreciated by those skilled in the art that following explanation is just for the ease of making an explanation to invention, and not as the concrete restriction to its scope.
The present invention, by adding half reinforced filling of large deal, under inner liner resists and deflects prerequisite that performance and the performance such as aging remain unchanged substantially, effectively improves the air-tightness of inner liner sizing material, and reduces tire cost simultaneously.
In order to improve the air-tightness of tubeless liner, the invention discloses a kind of rubber composition for meridian car tire inner liner, described rubber composition can be used for 50 specification passenger vehicle tyres.
For a rubber composition for meridian car tire inner liner, it is characterized in that its composition is composed of the following components:
Wherein, described halogenated butyl rubber is brombutyl;
Described plasticizer is that one or more in following material mix: aromatic naphtha, environment-friendly aromatic oil TDAE, RAE, MES, naphthenic oil, paraffin oil, vegetable oil, C5 resin, C9 resin, tackifying resin;
Described activator is: stearic acid;
Described promoter is that one or more in following material mix: thiuram, thiazole, sulfenamide, guanidine, thiocarbamide, aldehyde amine and aldehyde ammonia, dithiocar-bamate or xanthic acid;
Described vulcanizing agent is that one or more in following material mix: sulphur, insoluble sulfur;
A kind of preferred inner liner, as the preferred embodiments of the present invention, wherein the composition of rubber composition comprises:
That above raw materials is known to the skilled person and can to buy in market, the SMR20 that the STR20 that can produce for Thailand as natural rubber or Malaysia produce, the brombutyl used in tire can select the BIIR2222 of Exxon Mobil rubber company BIIR2030 or German Lanxess Corporation, the optional Hei Mao company of carbon black N660 or Cabot Co., Ltd's product, modified calcium carbonate is the product of Qingdao Meng Li rubber filling company, and name of product is radial-ply tyre proprietary material.
Carry out the manufacture of inner liner sizing material by described inner liner formula above, concrete production process is as follows:
Adopt GK580E meshing mixer, rotor speed of banbury mixer is initially set 45rpm, and ram piston pressure setting 6bar, cooling water of banbury mixer temperature is 30-40 DEG C.
Charging sequence is adopt the natural gum after plasticating and brombutyl to drop into banbury pressure bolt 45 seconds, and sizing material is fully mixed;
Carry bolt and drop into carbon black, modified calcium carbonate, C5 resin, stearic acid, pressure bolt refines 40 seconds, bolt is pressed after proposing bolt cleaning, when banbury internal sizes temperature reaches 120 DEG C, carry bolt rotor speed is dropped to 30rpm and injects environment protection oil TDAE simultaneously, the maximum temperature of pressure bolt to 145-165 DEG C draws off sizing material to twin-screw extrusion tablet press; Rubber master batch is made stand-by after cooling.
Rubber master batch is added ZZ2 string shaft type banbury GK255, banbury rotating speed is 20rpm, and ram piston pressure is 5bar, and cooling water of banbury mixer temperature is 30-40 DEG C.
Charging sequence is, rubber master batch and altax and sulphur drop into banbury pressure bolt 50 seconds together with zinc oxide, carry bolt and press bolt to refine 40 seconds again, and the maximum temperature that sizing material temperature reaches 100-110 DEG C draws off sizing material.
Turn refining cooling sizing material, and bottom sheet is cooled to the making that room temperature completes inner liner sizing material.
Comparison example and effect analysis, adopt the inner liner sizing material (hereinafter referred to as C-2) of above-mentioned formula at one group, compared with the formula (hereinafter referred to as C-3) not using the formula (hereinafter referred to as C-1) of calcium carbonate sizing material and use part ordinary calcium carbonate sizing material.Wherein the ratio of each scheme only calcium carbonate and TDAE consumption is different, and other component is constant.
| Composition No | C-1 | C-2 | C-3 |
| Natural rubber | 15 | 15 | 15 |
| Brombutyl | 85 | 85 | 85 |
| Carbon black N660 | 60 | 60 | 60 |
| Ordinary calcium carbonate | 45 | ||
| Modified calcium carbonate | 45 | ||
| TDAE | 5 | 9 | 9 |
| C5 resin | 2 | 2 | 2 |
| Stearic acid | 1 | 1 | 1 |
| Sulphur | 1 | 1 | 1 |
| ZnO | 1 | 1 | 1 |
| Altax | 1 | 1 | 1 |
| Mooney viscosity | 50 | 52 | 62 |
| Elongation at break % | 462 | 465 | 425 |
| Air-tightness | 100 | 130 | 120 |
| Flexural property | 100 | 99 | 90 |
| High speed performance | 100 | 100 | 100 |
| Endurance quality | 100 | 100 | 100 |
Above-mentioned Mooney viscosity, elongation at break, air-tightness and flexural property test sample is inner liner sizing material.As can be seen from the above table, when not adding calcium carbonate, air-tightness is 100, when adding the calcium carbonate of 45 parts, air-tightness is 120, when adding the modified calcium carbonate of 45 parts, air-tightness is 130, and as can be seen here, modified calcium carbonate contributes to the air-tightness improving inner liner.
The tire 205/55R16 91V using this inner liner containing modified calcium carbonate to make carries out the performance test of tire indoor security, and it is 2h10min that high-speed test (HST) adds up running time, and speed during off-test is 300km/h, and tire does not damage; It is 112h37min that long duration test adds up running time, and tire is not bad.
The tire 205/55R16 91V using the inner liner containing ordinary calcium carbonate to make carries out the performance test of tire indoor security, and it is 2h5min that high-speed test (HST) adds up running time, and speed during off-test is 300km/h, and tire does not damage; It is 112h30min that long duration test adds up running time, and tire is not bad.
Present invention optimizes the formula of inner liner sizing material, subduing the air-tightness improving about 30% under the substantially constant prerequisite of the performance such as aging, suitably reducing the cost of sizing material simultaneously.In order to improve the dispersion of half supporting material in sizing material, optimize the calendering process of sizing material.
I method of testing
The method of testing of I-1 Mooney viscosity and elongation at break
Test according to the requirement in GB GB/T 1232.1-2000 and GB/T 528-2009 respectively.
I-2 air tightness testing method
According to GB GB/T 1038-2000, pressure differential method is adopted to measure thin slice gas permeation amount and gas transmission coefficient.To be arranged on the sulfuration sheet of disk form on device and seal with vacuum grease.Low-pressure chamber and hyperbaric chamber separate by sulfuration sheet, and hyperbaric chamber is filled with about 10
5the test gas of Pa, low-pressure chamber gas is known.With vavuum pump, low pressure room air is extracted into close to null value after sample sealing.Measure the pressure increment Δ p in low-pressure chamber with manometer, can determine that test gas take time as the gas flow of function through sulfuration sheet to low-pressure chamber by hyperbaric chamber, but the starting stage of gas permeation speed time to time change should be got rid of.Gas permeation amount and gas transmission coefficient can by instrument with computer calculate by established procedure after output to floppy disk or be printed on record value, also can calculate by measured value.100 as the control value of air-tightness, and represent that air-tightness improve higher than 100, i.e. gas permeation amount or gas transmission coefficient diminish.
I-3 flexural property
The method of testing of flexural property, with reference to GB/T 13934-2006 moral ink West Asia type, is made by standard and is subdued print, checks breach length, width and be full of cracks quantity, then judge grade after when subduing 14.4 ten thousand times.100 as the control value of flexural property, represents that anti-flexural property declines lower than 100.
I-4 high speed performance method of testing
High speed performance test is according to GB GB/T 7034-1998, is arranged on by tire on the standard rim of load GB/T2987, and fills with the air pressure specified in GB, tyre and rim assembly is at least deposited 3h at the temperature of 38 ± 3 DEG C.During Tire testing, making pneumatic tire under the given load applied and the blowing pressure, rotary drum rotates, progressively improves speed, often walking the medium velocity maintenance specific time until to fixing speed with under the stipulated time, nondestructive tire is bad by being defined in.
I-5 endurance performance testing method
Endurance quality herein refers to low-atmosphere in tyre endurance quality, and according to the regulation in U.S. FMVSS139, by tire at given temperature and speed, rate of load condensate continues to increase, and after pneumatic tire runs preset time, checks without visual defects.
Certainly should recognize, although the description before having been carried out by example of the present invention, to the present invention make by those skilled in the art apparent like this and other improvement and changing should think and fall into as in broad range of the present invention in this paper.Therefore, although the present invention have references to and has preferred embodiment been described, its meaning is not that the equipment of tool novelty is restricted therefrom, on the contrary, it is intended to comprise various improvement within the broad range meeting above-mentioned open part, claim and equivalent modifications.
Claims (6)
1. a manufacture method for tyre airtight layer, is characterized in that:
The first step, drops into diene elastomer in meshing mixer, mixes under the first predetermined condition;
Second step, drops into carbon black, modified calcium carbonate and other auxiliary agents in meshing mixer, processes, draw off sizing material to twin-screw extrusion tablet press under the second predetermined condition, forms the first rubber master batch after cooling;
3rd step, puts in meshing mixer by the first rubber master batch, processes, obtain the second rubber master batch under the 3rd predetermined condition;
4th step, joins in banbury by the second rubber master batch, promoter, sulphur and zinc oxide, processes, draw off sizing material under the 4th predetermined condition, and bottom sheet is cooled to the making that room temperature completes inner liner;
It is 45rpm that described first predetermined condition comprises rotor speed of banbury mixer, and ram piston pressure is 6bar, and cooling water of banbury mixer temperature is 30-40 DEG C;
Described second predetermined condition comprises banbury internal sizes temperature when reaching 120 DEG C, carries bolt and rotor speed is dropped to 30rpm and injects environment protection oil TDAE simultaneously, the maximum temperature of pressure bolt to 145-165 DEG C;
It is 20rpm that described 3rd predetermined condition comprises banbury rotating speed, and ram piston pressure is 5bar, and cooling water of banbury mixer temperature is 30-40 DEG C;
Described 4th predetermined condition comprises dropping into after banbury presses bolt 50 seconds, carries bolt and presses bolt to refine 40 seconds again, and the maximum temperature that sizing material temperature reaches 100-110 DEG C draws off.
2. manufacture method as claimed in claim 1, is characterized in that: diene elastomer is selected from polybutadiene rubber, natural rubber, breast poly-SBR rubber, butadiene copolymer or these elastomeric mixtures.
3. manufacture method as claimed in claim 1, is characterized in that: described calcium carbonate is modified calcium carbonate, and its part is made up of aliphatic acid, coupling agent and crosslinking agent etc.; Another part take calcium carbonate as carrier, by toughening modifying dilution agent, thus makes the elastomer that the coated one deck of high-activity inorganic filling surface is thin, is easier to and the coupling of rubber macromolecule and grafting.
4. manufacture method according to claim 3, is characterized in that: this modified calcium carbonate consumption is 40phr.
5. a tyre airtight layer, it adopts as the right method according to any one of 1-4 of will going is made.
6. 50 specification passenger vehicle tyres, it comprises tyre airtight layer as claimed in claim 5.
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| CN201210595006.9A CN103085186B (en) | 2012-12-31 | 2012-12-31 | A kind of inner liner manufacturing technology for 50 specification passenger vehicle tyres |
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| CN103085186B true CN103085186B (en) | 2015-10-14 |
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| CN105037799A (en) * | 2015-09-15 | 2015-11-11 | 山东丰源轮胎制造股份有限公司 | Gas blocking agent and preparing method and application thereof |
| CN105254965A (en) * | 2015-10-16 | 2016-01-20 | 赛轮金宇集团股份有限公司 | Inner liner compound with air permeation resistance and low cost and for pneumatic tire |
| CN107674259A (en) * | 2017-11-02 | 2018-02-09 | 裴寿益 | A kind of tyre airtight layer halogenated rubber and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102199314A (en) * | 2011-03-16 | 2011-09-28 | 杭州中策橡胶有限公司 | Tire apex composition for improving bond system and its preparation method and application |
| CN102604167A (en) * | 2012-01-19 | 2012-07-25 | 金洁 | Preparation method of vulcanized rubber |
| CN102604170A (en) * | 2012-03-07 | 2012-07-25 | 安徽大瑞橡胶有限公司 | Tyre crown rubber material and mixing method thereof |
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| US20030125474A1 (en) * | 2001-06-27 | 2003-07-03 | Fumito Yatsuyanagi | Rubber composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102199314A (en) * | 2011-03-16 | 2011-09-28 | 杭州中策橡胶有限公司 | Tire apex composition for improving bond system and its preparation method and application |
| CN102604167A (en) * | 2012-01-19 | 2012-07-25 | 金洁 | Preparation method of vulcanized rubber |
| CN102604170A (en) * | 2012-03-07 | 2012-07-25 | 安徽大瑞橡胶有限公司 | Tyre crown rubber material and mixing method thereof |
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